Square pipe inner supporting piece capable of preventing locking collapse

Abstract

The utility model provides a square tube internal support member for preventing locking collapse, and relates to the technical field of photovoltaic equipment, the support member is sleeved in a square tube and comprises a support main body and a plurality of support arms which are integrally formed, the front and rear end faces of the support main body respectively abut against the inner surfaces of the front and rear side walls of the square tube, and the middle part of the support main body is provided with an abdicating hole for a bolt to penetrate through and connect; the supporting arms obliquely extend along the periphery of the supporting body, and the ends of the supporting arms are provided with abutting parts abutting against the upper wall and the lower wall of the square pipe. The tail end of the abutting part is further bent to form a limiting part, and the limiting part is matched with a first blocking piece arranged on the inner side of the square pipe and a second blocking piece arranged on the outer side of the square pipe, so that the supporting piece is limited and fixed in the square pipe. Axial clamping force in the bolt locking process can be effectively counteracted, the wall body of the square tube is prevented from sinking, the connecting strength and the stability of the support are improved, and the anti-collapse reinforcing device is suitable for the anti-collapse reinforcing scene of an assembly structure under the lightweight design.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic equipment technology, and in particular to an internal support component for a square tube that prevents locking collapse. Background Technology

[0002] With the continuous development of new energy technologies, photovoltaic power generation, as a green and clean energy source, has gradually become one of the mainstream technologies in the new energy field. Photovoltaic systems come in various support structures, commonly including rooftop supports, ground supports, carport supports, agricultural photovoltaic supports, and BIPV (Bipolar Inverter Photovoltaic). Among these, square tubing is particularly widely used in various photovoltaic support systems due to its regular structure, uniform stress distribution, and convenient assembly. Common materials for square tubing include carbon steel, zinc-aluminum-magnesium alloy, and aluminum alloy.

[0003] In photovoltaic (PV) support design, to improve material utilization and economy while meeting overall mechanical performance requirements, designers typically optimize the lightweighting of various support components. However, after weight reduction, the wall thickness of the square tube is reduced, leading to a decrease in its load-bearing capacity. Especially when installing bolt pairs through through holes, the thinned tube wall is unable to resist the torque and axial clamping force generated during bolt tightening, easily causing problems such as localized indentation and wall deformation. This not only prevents the bolt pairs from achieving the required clamping force, affecting the stability of the structural connection, but may also lead to safety hazards such as slippage and loosening, significantly reducing the anti-loosening performance and long-term reliability of the connection. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the technical problem to be solved by this utility model is to propose an internal support component for a square tube that prevents locking collapse, and the following technical solution is adopted:

[0005] A square tube internal support for preventing locking collapse, wherein the square tube has through holes for bolts to pass through it, and the support is nested inside the square tube.

[0006] The aforementioned support includes a support body, the front and rear ends of which abut against the front and rear inner walls of the aforementioned square tube, respectively, and the support body is provided with clearance holes for bolts to pass through.

[0007] The aforementioned support body is provided with several support arms, and the abutting part of at least one support arm abuts against the upper inner wall of the square tube, and the abutting part of at least one support arm abuts against the lower inner wall of the square tube, so that the clearance hole and the through hole are aligned.

[0008] Further improvements include four of the aforementioned support arms, wherein two support arms symmetrically abut against the upper inner wall of the square tube, and two support arms symmetrically abut against the lower inner wall of the square tube.

[0009] As a further improvement, a limiting part is provided at the free end of the aforementioned abutment portion, and a first blocking member and a second blocking member are respectively provided on the left and right sides of the aforementioned support member on the aforementioned square tube. The first blocking member and the second blocking member cooperate with the corresponding limiting part to restrict the aforementioned clearance hole at the through hole.

[0010] As a further improvement, the aforementioned through hole can be a strip-shaped hole or a round hole.

[0011] As a further improvement, the first and second blocking members are formed by pressing the lower wall of the square tube inward.

[0012] As a further improvement, the tilt angle of the above-mentioned support arm relative to the horizontal plane is 30° to 60°.

[0013] As a further improvement, the longitudinal section of the aforementioned support body is elliptical, with the major axis of the ellipse set longitudinally.

[0014] As a further improvement, the front and rear ends of the aforementioned support arm abut against the front and rear inner walls of the aforementioned square tube, respectively.

[0015] As a further improvement, the aforementioned support body and support arm are integrally formed.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Firstly, this utility model integrates a support body with multiple support arms to form a stable support structure. After being installed inside a square tube, it simultaneously abuts against the front and rear side walls and the upper and lower walls of the tube. During bolt tightening, the support body bears the clamping force in the front-rear direction, preventing the side walls of the square tube from collapsing. The support arms and their abutting parts provide auxiliary support in the upper and lower directions, improving the overall assembly stability and effectively solving the problem of square tube collapse during bolt tightening. This enhances stability and is suitable for anti-collapse reinforcement of lightweight supports.

[0018] Secondly, in this utility model, the first blocking member can prevent the support member from being inserted too deeply, ensuring that the clearance hole is limited to the through hole, avoiding assembly deviation or the inability to insert bolts; the second blocking member restricts the outward movement or sliding of the support member, improving the stability and reliability of the support member, making the installation of the support member more convenient and the position more accurate, which is conducive to batch rapid assembly.

[0019] Thirdly, in this utility model, the support arm is arranged at an angle and forms a horizontal abutment at its end, and the cross-section of the support body is circular. The angle of the inclined support arm facilitates multi-point distributed support within the square tube cavity, improving the uniformity of stress on the inner wall of the square tube; the circular cross-section of the support body ensures stable stress during locking, effectively dispersing the force transmitted by the support arm and avoiding damage caused by local stress concentration. The overall structure is simple and possesses good compressive strength and installation adaptability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is an assembly diagram of an embodiment of the present invention;

[0023] Figure 3 This is an assembly diagram of another embodiment of the present invention;

[0024] Figure 4 This is a longitudinal sectional view of the assembly of this utility model.

[0025] Figure label:

[0026] 10 - Support body; 20 - Support arm;

[0027] 11-Leaving hole; 21-Abutting part; 22-Limiting part;

[0028] 300 - Square tube; 310 - Through hole; 320 - First blocking element; 330 - Second blocking element. Detailed Implementation

[0029] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0030] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. The terms "part," "side," "end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0031] This utility model proposes an internal support component for preventing locking collapse within a square tube. The support component is nested inside a square tube 300, and the front and rear side walls of the square tube 300 are respectively provided with through holes 310 for bolts to pass through. The aforementioned square tube 300 is typically a hollow structural profile commonly used in industrial assembly. Its cross-section is square, possessing good stress uniformity and structural stability, making it suitable for connecting and reinforcing load-bearing components. The square tube 300 is formed by four mutually perpendicular side walls, creating an internal cavity with a regular internal space, facilitating the insertion of structural components. Common materials include carbon steel, stainless steel, and aluminum alloy. In specific applications, the square tube 300 has through holes 310 at both ends for bolts to pass through, enabling the connection and fixation of the supporting components. However, during bolt tightening, the nut and bolt head apply axial torque and clamping force inward, which can easily cause localized inward concavity of the square tube 300, resulting in structural collapse or locking failure.

[0032] like Figures 1-3 As shown, the support includes a support body 10, whose front and rear ends abut against the front and rear inner walls of the square tube 300, respectively. The support body 10 also has clearance holes 11 corresponding to the positions of the through holes 310 for bolt insertion. During the locking process, the support body 10 provides internal counter-support force to counteract the wall indentation caused by torque and axial clamping force, thereby effectively preventing the sidewalls of the square tube 300 from collapsing and ensuring the reliability and service life of the structural connection.

[0033] Furthermore, such as Figure 1 As shown, the support body 10 is provided with a plurality of support arms 20, and the abutting part 21 of at least one support arm 20 abuts against the upper inner wall of the square tube 300, and the abutting part 21 of at least one support arm 20 abuts against the lower inner wall of the square tube 300, so that the clearance hole 11 is aligned with the through hole 310.

[0034] In one specific embodiment, four support arms 20 are provided around the periphery of the support body 10. Two support arms 20 are symmetrically abutted against the upper inner wall of the square tube 300, and two support arms 20 are symmetrically abutted against the lower inner wall of the square tube 300. They are arranged at intervals along the outer periphery of the support body 10 and are respectively located at the upper left, lower left, upper right and lower right positions of the support body 10. The support arms 20 extend in a divergent manner relative to the support body 10, and the inclination angle relative to the horizontal plane is 30° to 60°. The ends of the support arms 20 are bent to form horizontal abutment portions 21.

[0035] As a preferred option, such as Figure 1 As shown, taking the support arm 20 at the upper right position as an example, the support arm 20 has an inclination angle of 60° relative to the horizontal plane, extends upward and to the right, and its end is bent clockwise by 120° to form an abutment part 21. The abutment part 21 is parallel to the horizontal plane, as shown. Figure 3As shown, when the support member is installed inside the square tube 300, the abutment portion 21 abuts against the upper wall of the inner cavity of the square tube 300. In this embodiment, through the four support arms 20 and the abutment portion 21, the support member can effectively support the upper and lower walls in the inner cavity of the square tube 300, thereby achieving the positioning of the clearance hole 11 and the through hole 310 while enhancing the stability of the overall structure.

[0036] Furthermore, the support arm 20 not only abuts against the upper and lower walls of the square tube 300, but its front and rear faces also abut against the inner surfaces of the front and rear side walls of the square tube 300, respectively. Together with the support body 10, they form a larger support structure, jointly bearing the axial clamping force and deformation stress generated during the bolt tightening process. This effectively improves the structural strength and load-bearing capacity, preventing the front and rear walls of the square tube 300 from denting under high loads. Moreover, the support body 10 and the support arm 20 are integrally formed, eliminating the need for connecting or assembly structures, improving processing consistency and reliability, and further enhancing overall stability.

[0037] like Figures 1-3 As shown, the support body 10 is preferably a hollow column. Specifically, the longitudinal section of the support body 10 is elliptical, and the major axis of the ellipse is set longitudinally, which can improve the compressive strength and deformation resistance of the support body 10 under vertical pressure.

[0038] like Figures 1-3 As shown, the free end of the support arm 20 is provided with a limiting part 22, and the square tube 300 is provided with a first blocking part 320 and a second blocking part 330 on the left and right sides of the support member, respectively. The first blocking part 320 and the second blocking part 330 cooperate with the corresponding limiting part 22 to restrict the clearance hole 11 to the through hole 310 of the square tube 300.

[0039] Specifically, the end of the abutment portion 21 away from the support arm 20 bends into the inner cavity of the square tube 300 to form a limiting portion 22. The square tube 300 has a first blocking member 320 on the inner side of the support member. When the through hole 310 and the clearance hole 11 correspond to each other, the limiting portion 22 on the inner side abuts against the first blocking member 320. The purpose of setting the first blocking member 320 is, on the one hand, to achieve accurate alignment between the clearance hole 11 and the through hole 310, to avoid the support member from shifting during installation, thereby ensuring that the bolt can smoothly pass through the clearance hole 11 and the through hole 310; on the other hand, it can also effectively avoid the problem of "over-insertion" during the insertion of the support member, that is, the support member is pushed too deep and disengages from the through hole 310 area, causing problems such as inability to align and difficulty in retraction, affecting the continuity of the locking operation and installation efficiency, and helping to improve the consistency and reliability of on-site assembly.

[0040] like Figure 3 and Figure 4As shown, in one embodiment, the through hole 310 is a circular hole. This structure is suitable for fixed connection scenarios. The axial position of the circular hole is determined, and no adjustment is required during the installation process. Only precise alignment is required. For this purpose, a second blocking member 330 is provided on the outside of the support member in the inner cavity of the square tube 300. The second blocking member 330 abuts against the limiting part 22 on the outside of the support member. That is, the support member is limited between the first blocking member 320 and the second blocking member 330 to prevent the support member from shifting during the installation process and improve the stability of the assembly structure.

[0041] like Figure 2 and Figure 4 As shown, in another embodiment, the through hole 310 is a strip-shaped hole, suitable for applications requiring precise adjustment of the installation position. Similarly, the inner cavity of the square tube 300 is provided with a second blocking member 330 on the outside of the support member, and the support member slides between the first blocking member 320 and the second blocking member 330. In a specific arrangement of this embodiment, the distance between the first blocking member 320 and the second blocking member 330 is the sum of the width of the support member and the length of the strip-shaped hole. When the limiting part 22 on the outside of the support member abuts against the first blocking member 320, the clearance hole 11 corresponds to the outside of the strip-shaped hole; when the limiting part 22 on the inside of the support member abuts against the second blocking member 330, the clearance hole 11 corresponds to the inside of the strip-shaped hole.

[0042] Preferably, the first blocking member 320 and the second blocking member 330 are formed by pressing the lower wall of the square tube inward. The second blocking member 330 is formed by pressing the lower wall of the square tube 300 inward after the support member is inserted into the inner cavity of the square tube 300.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A square tube inner support for preventing locking collapse, wherein the square tube (300) is provided with through holes (310) for bolts to pass through, characterized in that, The support is nested inside the square tube (300); The support includes a support body (10), the front and rear ends of the support body (10) abut against the front and rear inner walls of the square tube (300) respectively, and the support body (10) is provided with clearance holes (11) for passing through bolts; The supporting body (10) is provided with a plurality of supporting arms (20), and the abutting part (21) of at least one supporting arm (20) abuts against the upper inner wall of the square tube (300), and the abutting part (21) of at least one supporting arm (20) abuts against the lower inner wall of the square tube (300), so that the clearance hole (11) is aligned with the through hole (310).

2. The square tube internal support member for preventing locking collapse as described in claim 1, characterized in that, It includes four support arms (20), wherein two support arms (20) symmetrically abut against the upper inner wall of the square tube (300) and two support arms (20) symmetrically abut against the lower inner wall of the square tube (300).

3. A square tube internal support member for preventing locking collapse as described in claim 1 or 2, characterized in that, The free end of the abutment part (21) is provided with a limiting part (22). The square tube (300) is provided with a first blocking member (320) and a second blocking member (330) on the left and right sides of the support member, respectively. The first blocking member (320) and the second blocking member (330) cooperate with the corresponding limiting part (22) to restrict the clearance hole (11) to the through hole (310).

4. The square tube internal support member for preventing locking collapse as described in claim 3, characterized in that, The through hole (310) is a strip hole or a round hole.

5. The square tube internal support member for preventing locking collapse as described in claim 3, characterized in that, The first blocking member (320) and the second blocking member (330) are formed by pressing the lower wall of the square tube (300) inward.

6. The square tube internal support member for preventing locking collapse as described in claim 2, characterized in that, The angle of inclination of the support arm (20) relative to the horizontal plane is 30° to 60°.

7. The square tube internal support member for preventing locking collapse as described in claim 2, characterized in that, The longitudinal section of the support body (10) is elliptical, and the major axis of the ellipse is set longitudinally.

8. The square tube internal support member for preventing locking collapse as described in claim 1, characterized in that, The front and rear ends of the support arm (20) abut against the front and rear inner walls of the square tube (300), respectively.

9. The square tube inner support member for preventing locking collapse as described in claim 1, characterized in that, The supporting body (10) and the supporting arm (20) are integrally formed.

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