Fabricated steel tube structure frame capable of being connected at any angle

Abstract

The utility model discloses an assembly type steel pipe structure frame capable of being connected at any angle, and belongs to the technical field of non-welding convenient assembly of steel structures and multi-specification pipes. The utility model relates to a square-tube-type scaffold which comprises a first square tube, a second square tube and third square tubes, the first square tube and the second square tube are supporting tubes, one or more third square tubes are connected to the top of the first square tube and the top of the second square tube, a fourth square tube is transversely connected between the first square tube and the second square tube, and the first square tube, the second square tube, the third square tubes and the fourth square tube form a first structural frame; the third square tube is connected with the first square tube through a first angle-adjustable connecting structure, and the third square tube is connected with the second square tube through a first angle-adjustable connecting structure. According to the utility model, the angle of the bottom support frame of the cover plate or the photovoltaic panel is adjustable, the noise is low, the environment is protected, and welding and punching are not needed.

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 particularly relates to an assembled steel pipe structure frame that can be connected at any angle. Background Art

[0002] Existing steel structures, such as prefabricated buildings, shelving, construction enclosures, sports facilities, and photovoltaic racks, are often connected using welding, whether temporary or permanent, for steel pipe structures. While welding offers many advantages, it also has disadvantages. In some environments, where open flames are strictly prohibited, welding cannot be performed on-site, requiring steel pipe structures to be fabricated off-site and then transferred to the site. Transfer and on-site assembly can also present construction difficulties. Even in some environments where open flames are permitted, fire management procedures and enhanced fire protection measures are required. The entire construction process, from welding to painting, is complex, noisy, polluting the environment, presenting potential fire risks, and requiring a long site occupation period. Furthermore, there are requirements for the personnel involved, as well as constraints imposed by power supply voltage, power conditions, and workspace. The implementation process is long and requires a high level of expertise. Due to rapid economic development, skilled welders are in short supply, resulting in inconsistent weld quality. On-site welding also presents high noise levels, environmental pollution, and potential fire risks. Alternatively, flange connections, which require off-site fabrication and on-site installation, require advanced planning, precise measurements, and detailed diagrams. These require high production standards, a long lead time, and limitations on flexible installation. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies in the above-mentioned background technology and to provide an assembled steel pipe structural frame that can be connected at any angle.

[0004] The technical solution adopted by the utility model is: an assembled steel pipe structural frame that can be connected at any angle, including a first square tube, a second square tube, and a third square tube, the first square tube and the second square tube being support tubes, one or more third square tubes being connected to the tops of the first square tube and the second square tube, a fourth square tube being horizontally connected between the first square tube and the second square tube, and the first square tube, the second square tube, the third tube and the fourth square tube forming a first structural frame; the third tube and the first square tube are connected by a first adjustable angle connection structure, and the third tube and the second square tube are connected by a first adjustable angle connection structure.

[0005] In a further preferred structure, one or more auxiliary supporting square tubes and / or oblique connecting square tubes are connected between the fourth square tube and the third square tube, and the first square tube, the second square tube, the third square tube, the fourth square tube, the auxiliary supporting square tube, and the connecting square tube constitute a second structural frame, and the auxiliary supporting square tube and the connecting square tube are connected to the fourth square tube and the third square tube via a first adjustable angle connecting structure, a second adjustable angle connecting structure, or a third adjustable angle connecting structure.

[0006] A further preferred structure is that one or more oblique reinforcing support square tubes are connected between the first square tube and the fourth square tube or between the second square tube and the fourth square tube; the first square tube, the second square tube, the third square tube, the fourth square tube and the reinforcing support square tube constitute a third structural frame; each end of the reinforcing support square tube is connected to the first square tube or the second square tube and the fourth square tube via a first adjustable angle connection structure.

[0007] A further preferred structure is that an oblique reinforcing support square tube is connected between the first square tube and the third party tube, the first square tube, the third party tube and the reinforcing support square tube constitute a fourth structural frame, and the end of the reinforcing support square tube is connected to the first square tube or the third party tube via a first adjustable angle connection structure.

[0008] In a further preferred structure, the fourth square tube is connected to the first square tube and the second square tube respectively through a palm structure, a tube clamp structure and a pin.

[0009] A further preferred structure is that the first adjustable angle connection structure includes a palm structure, a tube clamp structure and a first connecting piece, the tube clamp structure and the palm structure are connected by the first connecting piece, the tube clamp structure and the first connecting piece are fixed by screws or pins, the palm structure and the first connecting piece are connected by pins or plug screws, and the palm structure can rotate around the pins.

[0010] A further preferred structure is that the second adjustable angle connection structure includes a palm structure, a tube clamp structure and a second connecting piece, the tube clamp structure and the palm structure are connected by the second connecting piece, the tube clamp structure and the second connecting piece are fixed by screws or pins, the palm structure and the second connecting piece are connected by pins or plug screws, and the palm structure can rotate around the pins.

[0011] A further preferred structure is that the third adjustable angle connection structure includes a palm structure, a tube clamp structure and a third connecting piece, the tube clamp structure and the palm structure are connected by the third connecting piece, the tube clamp structure and the third connecting piece are fixed by screws or pins, the palm structure and the third connecting piece are connected by pins or plug screws, and the palm structure can rotate around the pins.

[0012] A further preferred structure is that the pipe clamp structure includes an "L"-shaped component, and two of the "L"-shaped components are buckled to form a square frame structure for clamping square tubes. The upper and lower end faces of the "L"-shaped component are respectively provided with connecting bosses, and a plurality of first screw holes are opened on the connecting bosses. The upper and lower ends of the connecting bosses are respectively connected with first docking flanges, and the first docking flanges are opened on the first docking flanges. The two "L"-shaped components are fitted together through the first docking flanges and fixedly connected by screws passing through the first screw holes and nuts to form a square frame structure. The two "L"-shaped components are buckled to form a square frame structure with a square hole in the center for clamping the square tube, and first weight-reducing holes are opened on the sides of the two "L"-shaped components.

[0013] A further preferred structure is that the palm structure includes a "U"-shaped component, and two of the "U"-shaped components are buckled to form a square frame structure for clamping square tubes. The "U"-shaped component includes a connecting support plate, and a connecting flange is provided on the connecting support plate near one of the side surfaces. A first pin shaft hole is provided on the connecting flange, and the other two symmetrical side surfaces of the connecting support plate are connected to a second docking flange. A plurality of hexagonal countersunk holes are provided on the second docking flange, and a second screw through hole is provided in the hexagonal countersunk hole along the plane direction of the connecting flange, and a second weight-reducing hole is provided on the side of the connecting support plate.

[0014] A further preferred structure is that the first connecting member includes a first connecting plate, two opposite side surfaces of the upper end of the first connecting plate are connected to a first rectangular flange, a second screw hole is provided on the first rectangular flange to cooperate with the first screw hole, and the other two opposite side surfaces of the lower end of the first connecting plate are connected to a triangular flange, a second pin hole is provided on the triangular flange to cooperate with the first pin hole.

[0015] A further preferred structure is that the second connecting member includes a second connecting plate, two opposite side surfaces of the upper end of the second connecting plate are connected to a second rectangular flange, a third screw hole is provided on the second rectangular flange and matches the first screw hole, and the other two opposite side surfaces of the lower end of the second connecting plate are connected to an arc-shaped flange, and third pin holes are provided at two corners of the arc-shaped flange and match the first pin holes, and an arc groove is provided between the two third pin holes.

[0016] A further preferred structure is that the third connecting member includes a third connecting plate, two opposite side surfaces of the upper end of the third connecting plate are connected to the third rectangular flange, and a fourth screw hole is provided on the third rectangular flange to cooperate with the first screw hole, and the other two opposite side surfaces of the lower end of the third connecting plate are connected to the quadrilateral flange, and four fourth pin holes are provided on the quadrilateral flange to cooperate with the first pin hole, and the four fourth pin holes are distributed at the two corners and the middle position of the top edge of the quadrilateral flange.

[0017] In a further preferred structure, the palm structure is provided with a hole, and the first square tube or the second square tube is provided with a hole at a corresponding position, and is connected to the first square tube or the second square tube through the hole in the palm structure, thereby enhancing the ability of the third square tube to be pulled outward.

[0018] A further preferred structure is that the purlin square tube is connected between two third-party tubes, and the two purlin square tubes are connected into a rectangular tube by a clamp. The purlin square tube is locked with the mounting plate by U-bolts and nuts, and the third-party tube is locked with the mounting plate by U-bolts and nuts to achieve a 90° overlap between the purlin square tube and the third-party tube.

[0019] In a further preferred structure, a cover plate or a photovoltaic panel is fixed above the third-party tube.

[0020] The utility model realizes the adjustable angle of the cover plate or photovoltaic panel bottom support frame / structural frame through multiple square tubes and multiple adjustable angle connection structures. It is flexible to install, low in noise, environmentally friendly, does not require welding, does not require drilling, has a short installation period, and can be installed anytime and anywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of Example 1 of the utility model;

[0022] Figure 2 This is a schematic diagram of the connection between the third square tube, the first square tube, and the second square tube in Example 1 of the present utility model;

[0023] Figure 3 This is a schematic diagram of the first adjustable angle connection structure of the utility model;

[0024] Figure 4 This is a structural diagram of Example 2 of the present utility model;

[0025] Figure 5 This is a schematic diagram of the connection between the auxiliary supporting square tube and the connecting square tube in Example 2 of the present utility model;

[0026] Figure 6 This is a schematic diagram of another structural connection of connecting square tubes in Example 2 of the present utility model;

[0027] Figure 7 This is a schematic diagram of another structural connection of the auxiliary supporting square tube and the connecting square tube in Example 2 of the utility model;

[0028] Figure 8 To strengthen the support of the square tube connection diagram;

[0029] Figure 9 Schematic diagram of another structural connection for strengthening the support of square tubes;

[0030] Figure 10 This is a schematic structural diagram of the second connecting member of the utility model;

[0031] Figure 11 This is a schematic structural diagram of the third connecting piece of the utility model;

[0032] Figure 12 This is a schematic diagram of the pipe clamp structure of the present utility model;

[0033] Figure 13 This is the front view of the palm structure of the present invention;

[0034] Figure 14 It is a side view of the palm structure of the present invention. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation to the present invention.

[0036] Example 1: Figure 1 As shown, the present invention provides an assembled steel pipe structural frame that can be connected at any angle. The frame includes a first square tube 1, a second square tube 2, and a third square tube 3. The first and second square tubes 1 and 2 serve as support tubes. One or more third square tubes 3 are connected to the tops of the first and second square tubes 1 and 2. A fourth square tube 18 is transversely connected between the first and second square tubes 1 and 2. The first, second, third and fourth square tubes 1 and 18 form a first structural frame 7. The third square tube 3 is connected to the first square tube 1 via a first adjustable angle connection structure, and the third square tube 3 is connected to the second square tube 2 via a first adjustable angle connection structure. The fourth square tube 18 is connected to the first and second square tubes 1 and 2, respectively, via a palm structure 9, a pipe clamp structure 10, and a pin. A cover plate or photovoltaic panel 5 is fixed above the third square tube 3.

[0037] like Figure 2 、 Figure 3 As shown, the first adjustable angle connection structure includes a palm structure 9, a tube clamp structure 10 and a first connecting member 11. The tube clamp structure 10 and the palm structure 9 are connected by the first connecting member 11. The tube clamp structure 10 and the first connecting member 11 are fixed by screws or pins. The palm structure 9 and the first connecting member 11 are connected by a pin 15 or a plug screw. The palm structure 9 can rotate around the pin 15.

[0038] The first connecting member 11 includes a first connecting plate 111, and two opposite side surfaces at the upper end of the first connecting plate 111 are connected to a first rectangular flange 112. A second screw hole 113 is provided on the first rectangular flange 112 to cooperate with the first screw hole 102. The other two opposite side surfaces at the lower end of the first connecting plate 111 are connected to a triangular flange 114. A second pin hole 115 is provided on the triangular flange 114 to cooperate with the first pin hole 93.

[0039] like Figure 12 As shown, the pipe clamp structure 10 includes an "L"-shaped component, and two "L"-shaped components are buckled to form a square frame structure for clamping square tubes. The upper and lower end faces of the "L"-shaped component are respectively provided with connecting bosses 101, and a plurality of first screw holes 102 are opened on the connecting boss 101. The upper and lower ends of the connecting boss 101 are respectively connected with first docking flanges 103, and the first docking flanges 103 are opened. The two "L"-shaped components are fitted together through the first docking flanges 103 and fixedly connected by screws passing through the first screw holes 104 and nuts to form a square frame structure. The two "L"-shaped components are buckled to form a square frame structure, and a square hole 105 for clamping the square tube is opened in the center, and first weight-reducing holes 106 are opened on the sides of the two "L"-shaped components.

[0040] like Figure 13 、 Figure 14 As shown, the palm structure 9 includes a "U"-shaped component, and two "U"-shaped components are buckled to form a square frame structure for clamping the square tube. The "U"-shaped component includes a connecting support plate 91, and a connecting flange 92 is provided on the connecting support plate 91 near one of the side surfaces. A first pin shaft hole 93 is provided on the connecting flange 92, and the other two symmetrical side surfaces of the connecting support plate 91 are connected to a second docking flange 94. A plurality of hexagonal countersunk holes 95 are provided on the second docking flange 94, and a second screw through hole 96 is provided in the hexagonal countersunk hole 95 along the plane direction of the connecting flange 92. A second weight-reducing hole 97 is provided on the side of the connecting support plate 91.

[0041] During installation, first secure the first and second square tubes 1 and 2, then adjust the angle θ between the first and third square tubes 1 and 3. Next, align the adjusted third square tube 3 with the secured second square tube 2. At this point, the third square tube 3 is secured relative to the first and second square tubes 1 and 2. The photovoltaic panel 5 is then secured above the third square tube 3 to provide support.

[0042] Example 2: Figure 4 、 Figure 5 As shown, one or more auxiliary supporting square tubes 19 and / or oblique connecting square tubes 20 are connected between the fourth square tube 18 and the third party tube 3. The first square tube 1, the second square tube 2, the third party tube 3, the fourth square tube 18, the auxiliary supporting square tube 19, and the connecting square tube 20 constitute a second structural frame 8. The auxiliary supporting square tube 19 and the connecting square tube 20 are connected to the fourth square tube 18 and the third party tube 3 via a first adjustable angle connecting structure, a second adjustable angle connecting structure, or a third adjustable angle connecting structure.

[0043] like Figure 5As shown, in some optional embodiments, the end of an auxiliary supporting square tube 19 is connected to the ends of two third-party tubes 3 respectively through a first adjustable angle connection structure, the end of an auxiliary supporting square tube 19, the end of a connecting square tube 20 and the third-party tube 3 or the fourth square tube 18 are connected through a second adjustable angle connection structure, and the ends of the two connecting square tubes 20, the end of an auxiliary supporting square tube 19 and the fourth square tube 18 are connected through a third adjustable angle connection structure.

[0044] like Figure 6 As shown, in some optional embodiments, the ends of the two third-party tubes 3 are connected to each other through a fixing plate 21; the connecting square tube 20 is connected to the third-party tube 3 or the fourth square tube 18 through a first adjustable angle connection structure.

[0045] like Figure 7 As shown, in some optional embodiments, the end of a third-party tube 3 is connected to the end of an auxiliary supporting square tube 19 and the end of a connecting square tube 20 via a second adjustable angle connection structure, the end of a connecting square tube 20 is connected to the third-party tube 3 via a first adjustable angle connection structure, and the ends of the two connecting square tubes 20 are connected to the fourth square tube 18 via a second adjustable angle connection structure.

[0046] like Figure 8 As shown, one or more oblique reinforcing support square tubes 22 are connected between the first square tube 1 and the fourth square tube 18 or between the second square tube 2 and the fourth square tube 18; the first square tube 1, the second square tube 2, the third square tube 3, the fourth square tube 18 and the reinforcing support square tube 22 constitute a third structural frame 23; and the end of each reinforcing support square tube 22 is connected to the first square tube 1 or the second square tube 2 and the fourth square tube 18 via a first adjustable angle connection structure.

[0047] like Figure 9 As shown, an oblique reinforcing support square tube 22 is connected between the first square tube 1 and the third party tube 3. The first square tube 1, the third party tube 3 and the reinforcing support square tube 22 constitute a fourth structural frame 24. The end of the reinforcing support square tube 22 is connected to the first square tube 1 or the third party tube 3 through a first adjustable angle connection structure.

[0048] like Figure 5 、 Figure 10 As shown, the second adjustable angle connection structure includes a palm structure 9, a tube clamp structure 10 and a second connection member 16. The tube clamp structure 10 and the palm structure 9 are connected by the second connection member 16. The tube clamp structure 10 and the second connection member 16 are fixed by screws or pins. The palm structure 9 and the second connection member 16 are connected by a pin 15 or a plug screw. The palm structure 9 can rotate around the pin 15.

[0049] The second connecting member 16 includes a second connecting plate 161, two opposite side surfaces of the upper end of the second connecting plate 161 are connected to a second rectangular flange 162, a third screw hole 163 is provided on the second rectangular flange 162 and cooperates with the first screw hole 102, and the other two opposite side surfaces of the lower end of the second connecting plate 161 are connected to an arc-shaped flange 164, and two corners of the arc-shaped flange 164 are provided with third pin holes 165 that cooperate with the first pin holes 93, and an arc groove 166 is provided between the two third pin holes 165.

[0050] like Figure 5 、 Figure 11 As shown, the third adjustable angle connection structure includes a palm structure 9, a tube clamp structure 10 and a third connecting member 17. The tube clamp structure 10 and the palm structure 9 are connected by the third connecting member 17. The tube clamp structure 10 and the third connecting member 17 are fixed by screws or pins. The palm structure 9 and the third connecting member 17 are connected by a pin 15 or a plug screw. The palm structure 9 can rotate around the pin 15.

[0051] The third connecting member 17 includes a third connecting plate 171, and two opposite side surfaces at the upper end of the third connecting plate 171 are connected to the third rectangular flange 172. The third rectangular flange 172 is provided with a fourth screw hole 173 that cooperates with the first screw hole 102. The other two opposite side surfaces at the lower end of the third connecting plate 171 are connected to the quadrilateral flange 174. The quadrilateral flange 174 is provided with four fourth pin holes 175 that cooperate with the first pin holes 93. The four fourth pin holes 175 are distributed at the two corners and the middle position of the top edge of the quadrilateral flange 174.

[0052] like Figure 12 As shown, the pipe clamp structure 10 includes an "L"-shaped component, and two "L"-shaped components are buckled to form a square frame structure for clamping square tubes. The upper and lower end faces of the "L"-shaped component are respectively provided with connecting bosses 101, and a plurality of first screw holes 102 are opened on the connecting boss 101. The upper and lower ends of the connecting boss 101 are respectively connected with first docking flanges 103, and the first docking flanges 103 are opened. The two "L"-shaped components are fitted together through the first docking flanges 103 and fixedly connected by screws passing through the first screw holes 104 and nuts to form a square frame structure. The two "L"-shaped components are buckled to form a square frame structure, and a square hole 105 for clamping the square tube is opened in the center, and first weight-reducing holes 106 are opened on the sides of the two "L"-shaped components.

[0053] like Figure 13 、 Figure 14As shown, the palm structure 9 includes a "U"-shaped component, and two "U"-shaped components are buckled to form a square frame structure for clamping the square tube. The "U"-shaped component includes a connecting support plate 91, and a connecting flange 92 is provided on the connecting support plate 91 near one of the side surfaces. A first pin shaft hole 93 is provided on the connecting flange 92, and the other two symmetrical side surfaces of the connecting support plate 91 are connected to a second docking flange 94. A plurality of hexagonal countersunk holes 95 are provided on the second docking flange 94, and a second screw through hole 96 is provided in the hexagonal countersunk hole 95 along the plane direction of the connecting flange 92. A second weight-reducing hole 97 is provided on the side of the connecting support plate 91.

[0054] In some optional embodiments, such as Figure 1 As shown, a hole 14 is provided on the palm structure 9, and a hole is provided on the corresponding position of the first square tube 1 or the second square tube 2, and the palm structure 9 is connected to the first square tube 1 or the second square tube 2 through the hole 14 on the palm structure 9. Figure 2 As shown, the purlin square tube 4 is connected between the two third-party tubes 3. The two purlin square tubes 4 are connected into a rectangular tube by a clamp. The purlin square tube 4 is locked with the mounting plate 6 by U-bolts 12 and nuts 13. The third-party tube 3 is locked with the mounting plate 6 by U-bolts 12 and nuts 13 to achieve a 90° overlap between the purlin square tube 4 and the third-party tube 3.

[0055] The utility model connects multiple square tubes through the first adjustable angle connection structure, the second adjustable angle connection structure and the third adjustable angle connection structure, namely the first connection member 11, the second connection member 16 and the third connection member 17 with the palm structure 9 and the tube clamp structure 10, not only forming Figure 1 、 Figure 4 The first structural frame 7 and the second structural frame 8, Figure 8 、 Figure 9 The third structural frame 23 and the fourth structural frame 24 can also be arbitrarily combined to form a variety of triangular or quadrilateral truss structures.

[0056] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An assembled steel pipe structural frame that can be connected at any angle, comprising a first square tube (1), a second square tube (2), and a third square tube (3), wherein the first square tube (1) and the second square tube (2) are support tubes, one or more third square tubes (3) are connected to the top of the first square tube (1) and the second square tube (2), a fourth square tube (18) is transversely connected between the first square tube (1) and the second square tube (2), and the first square tube (1), the second square tube (2), the third square tube (3) and the fourth square tube (18) constitute a first structural frame (7); characterized in that: The third-party tube (3) is connected to the first square tube (1) via a first angle-adjustable connection structure, and the third-party tube (3) is connected to the second square tube (2) via a first angle-adjustable connection structure.

2. The assembled steel pipe structure frame capable of being connected at any angle according to claim 1, characterized in that: One or more auxiliary supporting square tubes (19) and / or oblique connecting square tubes (20) are connected between the fourth square tube (18) and the third square tube (3); the first square tube (1), the second square tube (2), the third square tube (3), the fourth square tube (18), the auxiliary supporting square tube (19), and the connecting square tube (20) constitute a second structural frame (8); the auxiliary supporting square tube (19) and the connecting square tube (20) are connected to the fourth square tube (18) and the third square tube (3) via a first adjustable angle connecting structure, a second adjustable angle connecting structure, or a third adjustable angle connecting structure.

3. The assembled steel pipe structural frame capable of being connected at any angle according to claim 1, characterized in that: One or more oblique reinforcing support square tubes (22) are connected between the first square tube (1) and the fourth square tube (18) or between the second square tube (2) and the fourth square tube (18); the first square tube (1), the second square tube (2), the third square tube (3), the fourth square tube (18) and the reinforcing support square tube (22) form a third structural frame (23); and the end of each reinforcing support square tube (22) is connected to the first square tube (1) or the second square tube (2) and the fourth square tube (18) via a first angle-adjustable connecting structure.

4. The assembled steel pipe structural frame capable of being connected at any angle according to claim 1, characterized in that: An oblique reinforcing support square tube (22) is connected between the first square tube (1) and the third party tube (3); the first square tube (1), the third party tube (3) and the reinforcing support square tube (22) form a fourth structural frame (24); and the end of the reinforcing support square tube (22) is connected to the first square tube (1) or the third party tube (3) via a first adjustable angle connection structure.

5. The assembled steel pipe structure frame capable of being connected at any angle according to claim 1, characterized in that: The first adjustable angle connection structure comprises a palm structure (9), a tube clamp structure (10) and a first connection member (11); the tube clamp structure (10) and the palm structure (9) are connected via the first connection member (11); the tube clamp structure (10) and the first connection member (11) are fixed via screws or pins; the palm structure (9) and the first connection member (11) are connected via a pin (15) or a plug screw; and the palm structure (9) can rotate around the pin (15).

6. The assembled steel pipe structural frame capable of being connected at any angle according to claim 2, characterized in that: The second adjustable angle connection structure comprises a palm structure (9), a tube clamp structure (10) and a second connection member (16); the tube clamp structure (10) and the palm structure (9) are connected via the second connection member (16); the tube clamp structure (10) and the second connection member (16) are fixed via screws or pins; the palm structure (9) and the second connection member (16) are connected via a pin (15) or a plug screw; and the palm structure (9) can rotate around the pin (15).

7. The assembled steel pipe structural frame capable of being connected at any angle according to claim 2, characterized in that: The third adjustable angle connection structure comprises a palm structure (9), a tube clamp structure (10) and a third connection member (17); the tube clamp structure (10) and the palm structure (9) are connected via the third connection member (17); the tube clamp structure (10) and the third connection member (17) are fixed via screws or pins; the palm structure (9) and the third connection member (17) are connected via a pin (15) or a plug screw; and the palm structure (9) can rotate around the pin (15).

8. The assembled steel pipe structural frame capable of being connected at any angle according to claim 5, 6 or 7, characterized in that: The pipe clamp structure (10) comprises an "L"-shaped component, two of the "L"-shaped components are buckled together to form a square frame structure for clamping a square tube, the upper end face and the lower end face of the "L"-shaped component are respectively provided with a connecting boss (101), a plurality of first screw holes (102) are provided on the connecting boss (101), the upper and lower ends of the connecting boss (101) are respectively connected with a first docking flange (103), the first docking flange (103) is provided with a first screw through hole (104), the two "L"-shaped components are fitted together through the first docking flange (103) and are fixedly connected to form a square frame structure by screws passing through the first screw through holes (104) and nuts, the two "L"-shaped components are buckled together to form a square frame structure, a square hole (105) for clamping a square tube is provided in the center, and first weight-reducing holes (106) are provided on the sides of the two "L"-shaped components.

9. The assembled steel pipe structural frame capable of being connected at any angle according to claim 8, characterized in that: The palm structure (9) includes a "U"-shaped component, and two of the "U"-shaped components are buckled to form a square frame structure for clamping a square tube. The "U"-shaped component includes a connecting support plate (91), and a connecting flange (92) is provided on one side of the connecting support plate (91). A first pin shaft hole (93) is provided on the connecting flange (92). The other two symmetrical sides of the connecting support plate (91) are connected to a second docking flange (94). A plurality of hexagonal countersunk holes (95) are provided on the second docking flange (94). A second screw through hole (96) is provided in the hexagonal countersunk hole (95) along the plane direction of the connecting flange (92). A second weight-reducing hole (97) is provided on the side of the connecting support plate (91).

10. The assembled steel pipe structural frame capable of being connected at any angle according to claim 5, characterized in that: The first connecting member (11) includes a first connecting plate (111), two opposite side surfaces of the upper end of the first connecting plate (111) are connected to a first rectangular flange (112), a second screw hole (113) is provided on the first rectangular flange (112) and matches the first screw hole (102), and the other two opposite side surfaces of the lower end of the first connecting plate (111) are connected to a triangular flange (114), and a second pin hole (115) is provided on the triangular flange (114) and matches the first pin hole (93).

11. The assembled steel pipe structural frame capable of being connected at any angle according to claim 6, characterized in that: The second connecting member (16) includes a second connecting plate (161), two opposite side surfaces of the upper end of the second connecting plate (161) are connected to a second rectangular flange (162), a third screw hole (163) is provided on the second rectangular flange (162) and matches the first screw hole (102), and the other two opposite side surfaces of the lower end of the second connecting plate (161) are connected to an arc flange (164), two corners of the arc flange (164) are provided with a third pin hole (165) that matches the first pin hole (93), and a circular arc groove (166) is provided between the two third pin holes (165).

12. The assembled steel pipe structure frame capable of being connected at any angle according to claim 7, characterized in that: The third connecting member (17) includes a third connecting plate (171), two opposite side surfaces of the upper end of the third connecting plate (171) are connected to a third rectangular flange (172), a fourth screw hole (173) is provided on the third rectangular flange (172) and matches the first screw hole (102), and the other two opposite side surfaces of the lower end of the third connecting plate (171) are connected to a quadrilateral flange (174), four fourth pin holes (175) are provided on the quadrilateral flange (174) and match the first pin hole (93), and the four fourth pin holes (175) are distributed at two corners and a middle position of the top edge of the quadrilateral flange (174).

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