Structure for fixing fine-adjustable photovoltaic module support and installation method

Abstract

The invention relates to the technical field of photovoltaic module supports, in particular to a structure for fixing a fine-adjustable photovoltaic module support and an installation method, and the structure is characterized in that a sliding groove is formed in an installation seat; a hoop is arranged on the tubular pile foundation; the device has the beneficial effects that when the tubular pile is inclined and deviated due to uneven frost heaving of a prefabricated tubular pile foundation, the nuts on the front inclined strut connecting rod, the rear inclined strut connecting rod and the inclined beam supporting rod are respectively screwed to be loosened; the positions of the front inclined strut connecting rod fixedly connected to the front inclined strut main body and the rear inclined strut connecting rod fixedly connected to the rear inclined strut main body in the upper long round hole formed in the inclined beam supporting rod and the lower long round hole formed in the hoop can be adjusted; the position of the photovoltaic panel mounted on the mounting seat is changed, the influence caused by inclination and deviation of the tubular pile is eliminated, the error-tolerant rate of the device is improved, the mounting elevation deviation of the photovoltaic module can be maintained within a reasonable range through fine adjustment of the device, and the device is simple in structure and convenient to mount and dismount.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic component brackets, and in particular to a fixed and finely adjustable photovoltaic component bracket structure and an installation method. Background Art

[0002] Under the national strategic background of "carbon peak and carbon neutrality", the photovoltaic industry has made breakthrough progress by virtue of the advantages of policy environment, its own technical flexibility and wide application range. Among them, the centralized photovoltaic industry, as a leader, has the advantages of "large power generation, stable power generation, low operating cost, convenient centralized management, and can be connected to the public power grid after power generation to supply long-distance loads".

[0003] In the prior art, in the centralized photovoltaic industry, a large number of centralized photovoltaic fields need to be set up, and the photovoltaic support foundations in the fields are mostly prefabricated pipe pile foundations.

[0004] However, the two traditional bracket installation methods each have their own disadvantages: the traditional fixed bracket has high requirements on the construction accuracy of the bracket foundation and low fault tolerance, and the adjustability is poor after the foundation deviation; and photovoltaics are generally installed in open areas such as deserts and Gobi at high altitudes. The foundation of the photovoltaic bracket may experience uneven frost heave, causing the pipe piles to tilt and deviate, thereby affecting the installation of the photovoltaic module. For this reason, the present invention proposes a fixed and fine-tunable photovoltaic module bracket structure and installation method to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a fixed and fine-tunable photovoltaic component support structure and installation method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a fixed and finely adjustable photovoltaic module support structure, the fixed and finely adjustable photovoltaic module support structure comprising: a mounting seat, a slide groove is provided on the mounting seat, and an inclined beam support rod is provided on the side of the mounting seat;

[0007] Pipe pile foundation, a mounting ring is arranged on the pipe pile foundation, and a clamp is arranged on the pipe pile foundation.

[0008] Preferably, the slide groove is a "convex" groove structure, and a movable slider and a matching slider are provided in the slide groove. Both the movable slider and the matching slider can slide along the slide groove, and the hole opened on the matching slider is slidably connected to the limit rod, and the limit rod is rotatably connected to the mounting seat.

[0009] Preferably, the oblique beam support rod is fixedly connected to the mounting seat, and a plurality of upper oblong holes are formed on the oblique beam support rod.

[0010] Preferably, the mounting ring is fixedly connected to the pipe pile foundation, and the mounting ring is a circular columnar structure.

[0011] Preferably, the clamp is installed on a pipe pile foundation, a rubber pad is fixedly connected to the inner side of the clamp, a positioning plate is fixedly connected to the clamp, the front column and the rear column are threadedly connected to the clamp through bolts and nuts, a lower oblong hole is provided on the clamp, a front diagonal brace body and a rear diagonal brace body are installed on the clamp, rear diagonal brace connecting rods are fixedly connected to both ends of the rear diagonal brace body, the rear diagonal brace connecting rods pass through the upper oblong holes provided on the diagonal beam support rods and are threadedly connected to the nuts, thereby fixing the rear diagonal brace body on the diagonal beam support rods.

[0012] Preferably, the threaded hole on the movable slider is threadedly connected to the threaded rod, the movable slider is threadedly connected to the bolt on the mounting rod fixedly connected to the mounting block through a nut, and the mounting block is threadedly connected to the photovoltaic panel through the bolt.

[0013] Preferably, the front column can be inserted into the positioning groove opened on the support plate, the front column is threadedly connected to the support plate by bolts, the front column is threadedly connected to the nut by bolts passing through the upper oblong hole opened on the inclined beam support rod, and an inter-column diagonal support rod is arranged between the front column and the rear column, and the inter-column diagonal support rod is threadedly connected to the front column and the rear column by bolts and nuts.

[0014] Preferably, both ends of the front diagonal brace body are fixedly connected with front diagonal brace connecting rods, which pass through the upper oblong holes provided on the diagonal beam support rods and are threadedly connected with nuts to fix the front diagonal brace body on the diagonal beam support rods.

[0015] Preferably, the threaded rod is fixedly connected to the limiting rod, the threaded rod is rotatably connected to a hole opened on the side of the mounting seat, and a clamping block is fixedly connected to one end of the threaded rod, and the clamping block can be inserted into a slot opened on the detachable handle.

[0016] A method for installing a fixed and fine-tunable photovoltaic component support structure comprises the following steps:

[0017] S1: In the pre-assembly stage, the clamps, front columns, rear columns and support plates are installed on the pipe pile foundation;

[0018] S2: During the installation phase, the front column and the rear column are bolted together with the mounting base by bolts and nuts, and the front diagonal brace body and the rear diagonal brace body are respectively connected to the diagonal beam support rod and the clamp by bolts and nuts;

[0019] S3: During the calibration phase, the angle of the mounting seat is adjusted by adjusting the fixing points of the upper oblong holes on the front diagonal support body, the rear diagonal support body, the front column, the rear column and the diagonal beam support rod.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention proposes a fixed and fine-adjustable photovoltaic component support structure and installation method. When uneven frost heave occurs in the prefabricated pipe pile foundation, causing the pipe piles to tilt and deviate, the nuts on the front diagonal support connecting rod, the rear diagonal support connecting rod and the diagonal beam support rod are respectively twisted to loosen them. The front diagonal support connecting rod fixedly connected to the front diagonal support body and the rear diagonal support connecting rod fixedly connected to the rear diagonal support body can be adjusted on the upper oblong hole opened on the diagonal beam support rod and the lower oblong hole opened on the clamp, thereby changing the position of the photovoltaic panel installed on the mounting seat, eliminating the influence caused by the tilt and deviation of the pipe piles, improving the fault tolerance of the device, and maintaining the installation elevation deviation of the photovoltaic component within a reasonable range through self-fine adjustment. The device has a simple structure, is easy to install and disassemble, is convenient for on-site construction by staff, and improves the quality of engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 3 for Figure 1 The enlarged structural diagram at B in the middle;

[0025] Figure 4 for Figure 1 The enlarged structural diagram at C in the middle;

[0026] Figure 5 It is a schematic diagram of the local structure of the present invention;

[0027] Figure 6 for Figure 5 Enlarged structural diagram at point D in the middle.

[0028] In the figure: 1. Mounting seat; 2. Pipe pile foundation; 3. Slide groove; 4. Inclined beam support rod; 5. Moving slider; 6. Threaded rod; 7. Limit rod; 8. Block; 9. Mounting block; 10. Mounting rod; 11. Photovoltaic panel; 12. Mounting ring; 13. Clamp; 14. Rubber pad; 15. Positioning plate; 16. Lower oblong hole; 17. Front column; 18. Rear column; 19. Support plate; 20. Positioning groove; 21. Inclined brace rod between columns; 22. Removable handle; 23. Front oblique brace body; 24. Rear oblique brace body; 25. Upper oblong hole; 26. Rear oblique brace connecting rod; 27. Front oblique brace connecting rod; 28. Matching slider. DETAILED DESCRIPTION

[0029] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0033] Embodiment 1

[0034] See also Figures 1 to 6The present invention provides a technical solution: a fixed and finely adjustable photovoltaic component support structure, the fixed and finely adjustable photovoltaic component support structure comprises: a mounting seat 1, a slide groove 3 is provided on the mounting seat 1, and a diagonal beam support rod 4 is provided on the side of the mounting seat 1; a pipe pile foundation 2, a mounting ring 12 is provided on the pipe pile foundation 2, and a clamp 13 is provided on the pipe pile foundation 2, an installation method, including the fixed and finely adjustable photovoltaic component support structure;

[0035] During specific use, the clamp 13, the front column 17, the rear column 18 and the support plate 19 are installed on the pipe pile foundation 2, and then the diagonal brace rod 21 between the columns is threadedly connected to the front column 17 and the rear column 18 through bolts, and the threaded end of the rear diagonal brace connecting rod 26 fixedly connected to the rear diagonal brace main body 24 is passed through the upper oblong hole 25 opened on the oblique beam support rod 4 and is threadedly connected to the nut, and the rear diagonal brace main body 24 is fixed on the oblique beam support rod 4, and the threaded end of the rear diagonal brace connecting rod 26 fixedly connected to the rear diagonal brace main body 24 is passed through the lower oblong hole 16 opened on the clamp 13 and is threadedly connected to the nut to fix the front diagonal brace main body 23 on the clamp 13. The front diagonal brace main body 23 can be installed on the oblique beam support rod 4 and the clamp 13 through the same steps.

[0036] Embodiment 2

[0037] On the basis of the first embodiment, a clamp 13 is provided in order to fine-tune the device and improve the construction quality. The clamp 13 is installed on the pipe pile foundation 2, and a rubber pad 14 is fixedly connected to the inner side of the clamp 13. A positioning plate 15 is fixedly connected to the clamp 13. A front column 17 and a rear column 18 are threadedly connected to the clamp 13 through bolts and nuts. A lower oblong hole 16 is provided on the clamp 13, and a front diagonal brace body 23 and a rear diagonal brace body 24 are installed on the clamp 13. Rear diagonal brace connecting rods 26 are fixedly connected at both ends of the rear diagonal brace body 24. The rear diagonal brace connecting rod 26 passes through the upper oblong hole 25 provided on the diagonal beam support rod 4 and is threadedly connected with the nut to fix the rear diagonal brace body 24 on the diagonal beam support rod 4. The rubber pad 14 is provided on the inner side of the clamp 13 and connected to the pipe pile foundation 2. The surface of the pile foundation 2 is in contact, which improves the connection strength and anti-slip effect of the hoop 13 and the pipe pile foundation 2. The mounting ring 12 is fixedly connected to the pipe pile foundation 2. The mounting ring 12 is a circular columnar structure. The mounting ring 12 is arranged below the hoop 13, which can support the hoop 13 and also play a positioning role, so that the staff can install the hoop 13 on the pipe pile foundation 2. The front column 17 can be inserted into the positioning groove 20 provided on the support plate 19. The front column 17 is threadedly connected to the support plate 19 by bolts. The front column 17 is threadedly connected to the nut by bolts penetrating the upper oblong hole 25 provided on the inclined beam support rod 4. An inter-column diagonal brace 21 is arranged between the front column 17 and the rear column 18. The inter-column diagonal brace 21 is connected to the front column 17 by bolts and nuts. The support plate 19 is arranged above the pipe pile foundation 2 and contacts the upper surface of the pipe pile foundation 2. The support plate 19 is threadedly connected to the front column 17 and the rear column 18 by bolts to improve the stability of the device. The two ends of the front diagonal support body 23 are fixedly connected with the front diagonal support connecting rod 27. The front diagonal support connecting rod 27 passes through the upper oblong hole 25 provided on the diagonal beam support rod 4 and is threadedly connected with the nut to fix the front diagonal support body 23 on the diagonal beam support rod 4. The threaded end of the front diagonal support connecting rod 27 fixedly connected to the front diagonal support body 23 passes through the lower oblong hole 16 provided on the clamp 13 and is threadedly connected with the nut to fix the front diagonal support body 23 on the clamp 13. The threaded end of the front diagonal support connecting rod 27 fixedly connected to the front diagonal support body 23 passes through the oblique beam support rod 4 The upper oblong hole 25 opened on the front is threadedly connected with the nut to fix the front diagonal support body 23 on the diagonal beam support rod 4. The rear diagonal support body 24 can be installed on the diagonal beam support rod 4 and the clamp 13 through the same steps. The diagonal beam support rod 4 is fixedly connected to the mounting seat 1. A plurality of upper oblong holes 25 are opened on the diagonal beam support rod 4. The nuts on the front diagonal support body 23, the rear diagonal support body 24 and the diagonal beam support rod 4 are respectively screwed to loosen them, so that the front diagonal support connecting rod 27 fixedly connected to the front diagonal support body 23 and the rear diagonal support connecting rod 26 fixedly connected to the rear diagonal support body 24 can be slid to adjust their positions on the upper oblong hole 25 opened on the diagonal beam support rod 4 and the lower oblong hole 16 opened on the clamp 13, thereby changing the angle of the mounting seat 1.Eliminate the influence of pile tilt and deviation caused by uneven frost heave, make it easier for workers to adjust it, improve the reliability of the device, and facilitate the actual use of workers.

[0038] Embodiment 3

[0039] On the basis of the second embodiment, in order to facilitate the use of the staff, a slide groove 3 is provided, the slide groove 3 is a "convex" groove structure, a movable slider 5 and a matching slider 28 are provided in the slide groove 3, the movable slider 5 and the matching slider 28 can slide along the slide groove 3, the hole opened on the matching slider 28 is slidably connected with the limit rod 7, the limit rod 7 is rotatably connected with the mounting seat 1, a plurality of slide grooves 3 are opened on the mounting seat 1, the limit rod 7 is fixedly connected with the threaded rod 6, the limit rod 7 passes through the hole opened on the mounting seat 1 and is rotatably connected with the inner wall of another slide groove 3, and the movable slider The threaded hole opened on the mounting block 5 is threadedly connected with the threaded rod 6, the movable slider 5 is threadedly connected with the bolt on the mounting rod 10 fixedly connected to the mounting block 9 through a nut, and the mounting block 9 is threadedly connected with the photovoltaic panel 11 through a bolt. The staff threadedly connects the mounting block 9 with the threaded hole opened on the photovoltaic panel 11 through the bolt, slides the matching slider 28 along the limiting rod 7 to a suitable position, and then aligns the mounting rod 10 fixedly connected to the mounting block 9 with the circular hole opened on the movable slider 5 and inserts it into the movable slider 5, and then uses the nut to thread the mounting rod 10 and the threaded part to connect the photovoltaic panel 11. The panel 11 is fixed on the movable slider 5, so that the matching slider 28 slides downward along the slide groove 3, so that the mounting rod 10 fixedly connected on the mounting block 9 is inserted into the hole opened on the matching slider 28 and is threadedly connected with the thread on the mounting rod 10 using a nut, so that the photovoltaic panel 11 and the matching slider 28 are fixed together, the threaded rod 6 is fixedly connected to the limit rod 7, the threaded rod 6 is rotatably connected to the hole opened on the side of the mounting seat 1, and a clamping block 8 is fixedly connected to one end of the threaded rod 6, and the clamping block 8 can be inserted into the notch opened on the detachable handle 22, and the notch opened on the detachable handle 22 is aligned with the clamping block 8 for installation, and the detachable handle 22 is shaken to rotate the threaded rod 6, and the threaded rod 6 rotates along the threaded hole opened on the movable slider 5, so that the movable slider 5 slides along the slide groove 3, and the spacing between the two photovoltaic panels 11 installed on the mounting seat 1 can be changed. The staff can adjust the spacing between the two photovoltaic panels 11 according to the actual situation, which is convenient for the staff to actually use, and with all the above structures, photovoltaic panels 11 of different specifications can be installed on the mounting seat 1, which improves the applicability of the device and is convenient for the staff to actually use.

[0040] Working principle: In actual use, when uneven frost heave occurs in the prefabricated pipe pile foundation, causing the pipe pile to tilt or deviate, the nuts on the front diagonal brace connecting rod 27, the rear diagonal brace connecting rod 26 and the diagonal beam support rod 4 are respectively loosened, and the positions of the front diagonal brace connecting rod 27 fixedly connected to the front diagonal brace main body 23 and the rear diagonal brace connecting rod 26 fixedly connected to the rear diagonal brace main body 24 on the upper oblong hole 25 opened on the diagonal beam support rod 4 and the lower oblong hole 16 opened on the clamp 13 can be adjusted, thereby changing the position of the photovoltaic panel 11 installed on the mounting seat 1, eliminating the influence caused by the tilt and deviation of the pipe pile, and improving the fault tolerance of the device. The elevation deviation of the photovoltaic component installation can be maintained within a reasonable range through self-fine adjustment. The device has a simple structure, is easy to install and disassemble, and is convenient for on-site construction by staff, thereby improving the quality of engineering construction.

[0041] A method for installing a fixed and fine-tunable photovoltaic component support structure comprises the following steps:

[0042] S1: pre-assembly stage, the clamp 13, the front column 17, the rear column 18 and the support plate 19 are installed on the pipe pile foundation 2;

[0043] S2: During the installation phase, the front column 17 and the rear column 18 are bolted together with the mounting base 1 by bolts and nuts, and the front diagonal brace body 23 and the rear diagonal brace body 24 are respectively connected to the diagonal beam support rod 4 and the hoop 13 by bolts and nuts;

[0044] S3: During the calibration phase, the fixing points of the front diagonal support body 23 , the rear diagonal support body 24 , the front column 17 , the rear column 18 and the upper oblong hole 25 provided on the diagonal beam support rod 4 are adjusted to adjust the angle of the mounting seat 1 .

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed and fine-tunable photovoltaic module support structure, characterized in that: The fixed and finely adjustable photovoltaic assembly support structure comprises: a mounting seat (1), a slide groove (3) is provided on the mounting seat (1), and an inclined beam support rod (4) is provided on the side of the mounting seat (1); A pipe pile foundation (2), a mounting ring (12) is arranged on the pipe pile foundation (2), and a clamp (13) is arranged on the pipe pile foundation (2).

2. A fixed and fine-adjustable photovoltaic module support structure according to claim 1, characterized in that: The slide groove (3) is a convex groove structure. A movable slider (5) and a matching slider (28) are arranged in the slide groove (3). Both the movable slider (5) and the matching slider (28) can slide along the slide groove (3). A hole provided on the matching slider (28) is slidably connected to a limit rod (7), and the limit rod (7) is rotatably connected to the mounting seat (1).

3. The fixed and fine-adjustable photovoltaic module support structure according to claim 1, characterized in that: The inclined beam support rod (4) is fixedly connected to the mounting seat (1), and a plurality of upper oblong holes (25) are provided on the inclined beam support rod (4).

4. The fixed and fine-adjustable photovoltaic module support structure according to claim 1, characterized in that: The mounting ring (12) is fixedly connected to the pipe pile foundation (2), and the mounting ring (12) is in the form of a circular columnar structure.

5. The fixed and fine-adjustable photovoltaic module support structure according to claim 1, characterized in that: The clamp (13) is installed on the pipe pile foundation (2), a rubber pad (14) is fixedly connected to the inner side of the clamp (13), a positioning plate (15) is fixedly connected to the clamp (13), a front column (17) and a rear column (18) are threadedly connected to the clamp (13) through bolts and nuts, a lower oblong hole (16) is provided on the clamp (13), a front diagonal support body (23) and a rear diagonal support body (24) are installed on the clamp (13), and rear diagonal support connecting rods (26) are fixedly connected to the two ends of the rear diagonal support body (24), and the rear diagonal support connecting rods (26) penetrate the upper oblong holes (25) provided on the diagonal beam support rods (4) and are threadedly connected to the nuts, thereby fixing the rear diagonal support body (24) on the diagonal beam support rods (4).

6. The fixed and fine-adjustable photovoltaic module support structure according to claim 2, characterized in that: The threaded hole formed on the movable slider (5) is threadedly connected to the threaded rod (6); the movable slider (5) is threadedly connected to a bolt on a mounting rod (10) fixedly connected to a mounting block (9) via a nut; and the mounting block (9) is threadedly connected to a photovoltaic panel (11) via a bolt.

7. The fixed and fine-adjustable photovoltaic module support structure according to claim 5, characterized in that: The front column (17) can be inserted into a positioning groove (20) provided on the support plate (19); the front column (17) is threadedly connected to the support plate (19) through bolts; the front column (17) is threadedly connected to a nut through bolts passing through an upper oblong hole (25) provided on the oblique beam support rod (4); an inter-column oblique support rod (21) is provided between the front column (17) and the rear column (18); the inter-column oblique support rod (21) is threadedly connected to the front column (17) and the rear column (18) through bolts and nuts.

8. The fixed and fine-adjustable photovoltaic module support structure according to claim 5, characterized in that: The two ends of the front diagonal support body (23) are fixedly connected with front diagonal support connecting rods (27), and the front diagonal support connecting rods (27) penetrate the upper oblong holes (25) provided on the diagonal beam support rods (4) and are threadedly connected with nuts to fix the front diagonal support body (23) on the diagonal beam support rods (4).

9. The fixed and fine-adjustable photovoltaic module support structure according to claim 6, characterized in that: The threaded rod (6) is fixedly connected to the limiting rod (7), and the threaded rod (6) is rotatably connected to a hole opened on the side of the mounting seat (1). A clamping block (8) is fixedly connected to one end of the threaded rod (6), and the clamping block (8) can be clamped into a notch opened on the detachable handle (22).

10. A method for installing a fixed and fine-adjustable photovoltaic module support structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: pre-assembly stage, the clamp (13), the front column (17), the rear column (18) and the support plate (19) are installed on the pipe pile foundation (2); S2: Installation stage, the front column (17) and the rear column (18) are bolted together with the mounting base (1) by bolts and nuts, and the front diagonal support body (23) and the rear diagonal support body (24) are respectively connected to the diagonal beam support rod (4) and the hoop (13) by bolts and nuts; S3: During the calibration phase, the angle of the mounting base (1) is adjusted by adjusting the fixing points of the front diagonal support body (23), the rear diagonal support body (24), the front column (17), the rear column (18) and the upper oblong hole (25) provided on the diagonal beam support rod (4).

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