Square tube welding connecting piece

Abstract

The utility model relates to a square tube welding connecting piece which comprises a first square tube, a second square tube and a middle connecting assembly, and one end of the first square tube is fixedly connected with one end of the second square tube through the middle connecting assembly. The middle connecting assembly comprises a first connecting block, a second connecting block and a supporting block, the first connecting block is locked to the end of the first square pipe through a fastener, the second connecting block is locked to the end of the second square pipe through a fastener, the second connecting block and the first connecting block are locked through a fastener, the supporting block is connected with the first connecting block, and the supporting block is connected with the second connecting block through a fastener. The supporting block makes contact with the outer wall of the second square pipe and is used for bearing the pressure of the second square pipe. According to the square tube welding connecting piece, square tubes with different cross section sizes can be stably connected through switching of the middle connecting piece, and it is guaranteed that connection of the two square tubes with different cross section specifications has enough strength and stability.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, and in particular to a square tube welding connector. Background Technology

[0002] Photovoltaic power generation is an important component of renewable resource utilization. It mainly uses solar panels facing the sun to convert solar energy into electrical energy.

[0003] A photovoltaic power station consists of several photovoltaic power generation devices arranged in a row, and the photovoltaic power generation devices are supported by photovoltaic brackets, which are composed of multiple pipes.

[0004] In photovoltaic (PV) support systems, the stress characteristics of the same component, such as a purlin, vary at different longitudinal positions. Using components with the same cross-section throughout is uneconomical. Based on the structural stress characteristics, square tubes with different cross-sections can be used at different longitudinal positions, ensuring both structural rationality and economy. Furthermore, in some regions of my country, due to regional cultural requirements, there are additional requirements for the shape of PV array support systems, necessitating longer purlin overhangs. Therefore, larger cross-sections are needed to ensure safety. For the middle sections of the support system where the shape is not critical, smaller cross-section square tubes can be used. Sufficient connection strength must be ensured at the joints between different cross-sections of the same component. Therefore, connecting square tubes with different cross-sections presents a significant challenge. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the strength of the photovoltaic support structure with various cross-sectional dimensions cannot be guaranteed after connecting the tubes with different cross-sectional dimensions.

[0006] To solve the above-mentioned technical problems, this utility model provides a square tube welding connector, including: a first square tube, a second square tube, and an intermediate connecting assembly. One end of the first square tube and one end of the second square tube are fixedly connected by the intermediate connecting assembly. The intermediate connecting assembly includes a first connecting block, a second connecting block, and a support block. The first connecting block is locked to the end of the first square tube by fasteners, and the second connecting block is locked to the end of the second square tube by fasteners. The second connecting block and the first connecting block are locked together by fasteners. The support block is connected to the first connecting block and contacts the outer wall of the second square tube to support the pressure of the second square tube.

[0007] In one embodiment of the present invention, both the first square tube and the second square tube are hollow square tubes, and the cross-sectional area of ​​the first square tube is larger than that of the second square tube. The first connecting block is located inside the hollow part of the first square tube, and the second connecting block is located inside the hollow part of the second square tube.

[0008] In one embodiment of this utility model, the cross-sections of the first connecting block and the second connecting block are both U-shaped. The first connecting block has a first through hole on each of its two opposite sidewalls. The first square tube has a second through hole on its sidewall opposite to the sidewall of the first connecting block. The first connecting bolt is provided in the first through hole and the second through hole. The first connecting bolt is provided with a nut. The first connecting bolt locks the first square tube and the first connecting block together.

[0009] In one embodiment of the present invention, a third through hole is provided on two opposing inner walls of the second connecting block, and a fourth through hole is provided on the side wall of the second square tube opposite to the side wall of the second connecting block. A second connecting bolt is provided in the third and fourth through holes, and a nut is provided on the second connecting bolt. The second connecting bolt locks the second square tube and the second connecting block.

[0010] In one embodiment of the present invention, the end face of the first connecting block near the second square tube is in contact with the end face of the second connecting block. A first threaded hole is provided on the end face of the first connecting block and the second connecting block opposite to each other. A first screw is provided on the end face of the second connecting block opposite to the first connecting block. The stud of the first screw passes through the second connecting block and is locked in the first threaded hole.

[0011] In one embodiment of the present invention, the cross-sectional area of ​​the second connecting block is smaller than that of the first connecting block, and the support block contacts the end face of the first connecting block that extends out of the cross-section of the second connecting block.

[0012] In one embodiment of this utility model, the first connecting block is provided with a third connecting bolt, and the third connecting bolt is provided with a nut.

[0013] In one embodiment of this utility model, the end face of the support block opposite to the first connecting block is provided with a waist-shaped hole, the third connecting bolt passes through the waist-shaped hole, and the first connecting block and the support block are locked together by the third connecting bolt and nut.

[0014] In one embodiment of this utility model, the support block is a right-angled plate.

[0015] In one embodiment of the present invention, at least one reinforcing rib is provided inside the right-angled corner of the support block.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] The square tube welding connector described in this utility model can achieve a stable connection between square tubes with different cross-sectional sizes through the transition of the intermediate connector, ensuring that the connection between two square tubes with different cross-sectional specifications has sufficient strength and stability. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of the square tube welded connector in a preferred embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the square tube welded connector in a preferred embodiment of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of the first square tube and the intermediate connecting component in a preferred embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the second square tube and the intermediate connecting component in a preferred embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the intermediate connecting component in a preferred embodiment of the present invention. Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the structure of the intermediate connecting component in a preferred embodiment of the present invention. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the structure of the second connecting block and the supporting block in a preferred embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the first connecting block in a preferred embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the second connecting block in a preferred embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the support block in a preferred embodiment of the present invention.

[0029] Explanation of reference numerals in the accompanying drawings: First square tube 1, Second through hole 11, First connecting bolt 12, Second square tube 2, Fourth through hole 21, Second connecting bolt 22, Intermediate connecting assembly 3, First connecting block 31, First through hole 311, First threaded hole 312, Third connecting bolt 313, Second connecting block 32, Third through hole 321, First screw 322, Support block 33, Waist-shaped hole 331, Reinforcing rib plate 332. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0031] Reference Figure 1-4 As shown, the square tube welding connector of this utility model includes: a first square tube 1, a second square tube 2, and an intermediate connecting component 3. One end of the first square tube 1 and one end of the second square tube 2 are fixedly connected by the intermediate connecting component 3. The intermediate connecting component 3 enables a stable connection between the first square tube 1 and the second square tube 2, and the first square tube 1 and the second square tube 2 have a certain strength after being connected.

[0032] Reference Figure 5-7 As shown, the intermediate connecting component 3 includes a first connecting block 31, a second connecting block 32, and a support block 33. The first connecting block 31 is fastened to the end of the first square tube 1 by fasteners, and the second connecting block 32 is fastened to the end of the second square tube 2 by fasteners. The second connecting block 32 and the first connecting block 31 are also fastened together by fasteners. The support block 33 is connected to the first connecting block 31 and contacts the outer wall of the second square tube 2 to support the pressure of the second square tube 2. Both the first square tube 1 and the second square tube 2 are hollow square tubes, and the cross-sectional area of ​​the first square tube 1 is larger than that of the second square tube 2. The first connecting block 31 is located inside the hollow interior of the first square tube 1, and the second connecting block 32 is located inside the hollow interior of the second square tube 2.

[0033] Reference Figure 8 As shown, the cross-sections of the first connecting block 31 and the second connecting block 32 are both U-shaped. The two opposite sidewalls of the first connecting block 31 are provided with first through holes 311. The sidewall of the first square tube 1 opposite to the sidewall of the first connecting block 31 is provided with a second through hole 11. The first through hole 311 and the second through hole 11 are provided with first connecting bolts 12. The first connecting bolts 12 are provided with nuts. The first connecting bolts 12 lock the first square tube 1 and the first connecting block 31 together.

[0034] Reference Figure 9 As shown, the second connecting block 32 has a third through hole 321 on its two opposite inner walls, and the second square tube 2 has a fourth through hole 21 on its side wall opposite to the side wall of the second connecting block 32. The third through hole 321 and the fourth through hole 21 are provided with a second connecting bolt 22, and the second connecting bolt 22 is provided with a nut. The second connecting bolt 22 locks the second square tube 2 and the second connecting block 32.

[0035] In the above structure, the end face of the first connecting block 31 near the second square tube 2 is in contact with the end face of the second connecting block 32. The end faces of the first connecting block 31 and the second connecting block 32 opposite each other are provided with a first threaded hole 312. The end face of the second connecting block 32 opposite to the first connecting block 31 is provided with a first screw 322. The stud of the first screw 322 passes through the second connecting block 32 and is locked in the first threaded hole 312.

[0036] In the above structure, the cross-sectional area of ​​the second connecting block 32 is smaller than that of the first connecting block 31, and the support block 33 is in contact with the end face of the first connecting block 31 extending out of the cross-section of the second connecting block 32.

[0037] Reference Figure 10 As shown, the first connecting block 31 is provided with a third connecting bolt 313, and the third connecting bolt 313 is provided with a nut. The end face of the support block 33 opposite to the first connecting block 31 is provided with a slotted hole 331, through which the third connecting bolt 313 passes. The first connecting block 31 and the support block 33 are locked together by the third connecting bolt 313 and the nut. The slotted hole 331 allows adjustment of the position between the third connecting bolt 313 and the support block 33, thus adapting to second square tubes 2 with different cross-sections.

[0038] Furthermore, the support block 33 is a right-angled plate. At least one reinforcing rib 332 is provided inside the right-angled corner of the support block 33. Preferably, there are two reinforcing ribs 332, and the two reinforcing ribs 332 are arranged in parallel.

[0039] Installation process:

[0040] For square tubes of different heights and widths, the ends of the square tubes are provided with through holes. The center of the opening of the first connecting block 31 is aligned with that of the first square tube 1. A connecting bolt is used to connect and fix the square tubes. The upper part of the first connecting block 31 is provided with an internal threaded hole, and the lower part is provided with an external threaded rod of the third connecting bolt 313. During connection, firstly, the first connecting block 31 is placed into the first square tube 1 and fixed. Then, the threaded rod at the end of the second connecting block 32 is screwed into the internal threaded hole at the top of the first connecting block 31 and tightened in place, so that the second connecting block 32 remains vertical. The second square tube 2 is then fitted into the second connecting block 32 and aligned with the opening of the second square tube 2. A bolt is used to pass through the bolt holes of both and fix them on the other side, thus fixing the first square tube 1 and the second square tube 2. Align the waist-shaped hole 331 of the support block 33 with the protruding thread of the third connecting bolt 313 on the lower side of the first connecting block 31 and tighten it. Use a nut to fix the two together. After all the above components are connected, welds can be applied to the sides between the first square tube 1 and the second square tube 2, between the first square tube 1 and the support block 33, and between the second square tube 2 and the support block 33.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A square tube welded connector, characterized in that, include: The first square tube, the second square tube, and the intermediate connecting assembly are provided, with one end of the first square tube and one end of the second square tube being fixedly connected by the intermediate connecting assembly. The intermediate connecting component includes a first connecting block, a second connecting block, and a support block. The first connecting block is fastened to the end of the first square tube by fasteners, the second connecting block is fastened to the end of the second square tube by fasteners, and the second connecting block and the first connecting block are fastened together by fasteners. The support block is connected to the first connecting block and contacts the outer wall of the second square tube to support the pressure of the second square tube.

2. The square tube welded connector according to claim 1, characterized in that: Both the first square tube and the second square tube are hollow square tubes, and the cross-sectional area of ​​the first square tube is larger than that of the second square tube. The first connecting block is located inside the hollow part of the first square tube, and the second connecting block is located inside the hollow part of the second square tube.

3. The square tube welded connector according to claim 2, characterized in that: Both the first connecting block and the second connecting block have U-shaped cross sections. The first connecting block has a first through hole on each of its two opposite side walls. The first square tube has a second through hole on its side wall opposite to the side wall of the first connecting block. The first connecting bolt is installed in the first through hole and the second through hole. The first connecting bolt is equipped with a nut. The first connecting bolt locks the first square tube and the first connecting block together.

4. The square tube welded connector according to claim 3, characterized in that: The second connecting block has a third through hole on its two opposite inner walls, and the second square tube has a fourth through hole on its side wall opposite to the side wall of the second connecting block. The third and fourth through holes are provided with a second connecting bolt, and the second connecting bolt is provided with a nut. The second connecting bolt locks the second square tube and the second connecting block.

5. The square tube welded connector according to claim 3, characterized in that: The end face of the first connecting block near the second square tube is in contact with the end face of the second connecting block. The end faces of the first connecting block and the second connecting block opposite each other are provided with a first threaded hole. The end face of the second connecting block opposite to the first connecting block is provided with a first screw. The stud of the first screw passes through the second connecting block and is locked in the first threaded hole.

6. The square tube welded connector according to claim 3, characterized in that: The cross-sectional area of ​​the second connecting block is smaller than that of the first connecting block, and the support block is in contact with the end face of the first connecting block that extends out of the cross-section of the second connecting block.

7. The square tube welded connector according to claim 3, characterized in that: The first connecting block is provided with a third connecting bolt, and the third connecting bolt is provided with a nut.

8. The square tube welded connector according to claim 7, characterized in that: The support block and the first connecting block have a waist-shaped hole on their opposite end faces. The third connecting bolt passes through the waist-shaped hole, and the first connecting block and the support block are locked together by the third connecting bolt and nut.

9. The square tube welded connector according to claim 8, characterized in that: The support block is a right-angled plate.

10. The square tube welded connector according to claim 9, characterized in that: At least one reinforcing rib is provided inside the right-angle corner of the support block.

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