Photovoltaic array cable restraint guard

Abstract

The application relates to a photovoltaic array cable restraint protection device which comprises an upper shell, a lower shell, a connecting structure and a limiting structure, the upper shell and the lower shell are combined to form a long rectangular cavity structure with both ends being open, the upper shell and the lower shell are detachably connected through the connecting structure, first limiting holes and second limiting holes are respectively arranged on the left and right side walls of the upper shell, the limiting structure penetrates through the first limiting holes and the second limiting holes at both ends and is combined with the upper shell to form a space for restraining the cable. The photovoltaic array cable to be laid is placed in the long rectangular cavity with both ends being open formed by the lower shell and the upper shell, the whole structure of the shell is used to form a wrapping type protection on the outer periphery of the cable, and the basic function of external isolation protection of the cable is realized.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, and in particular to a photovoltaic array cable restraint and protection device. Background Technology

[0002] With the rapid popularization of photovoltaic power generation technology, various centralized and distributed photovoltaic power stations are being built on a large scale. As the core unit of the photovoltaic power generation system, the photovoltaic array's cable system plays a crucial role in power transmission. The standardization, stability, and safety of cable laying directly determine the operational stability, power generation efficiency, and service life of the photovoltaic power station.

[0003] Currently, during the installation of photovoltaic array cables, the industry generally uses simple cable ties, ordinary clips, and binding ropes as conventional fixing structures to position and constrain the cables. Some power stations only provide simple wrapping protection for the cables, lacking dedicated and standardized cable constraint and protection structures. These traditional construction methods and protection structures have many inherent defects in practical applications and are difficult to adapt to the harsh operating conditions of photovoltaic arrays operating outdoors for extended periods.

[0004] First, traditional cable ties, binding ropes, and other restraint structures have poor stability and the fixing spacing is difficult to standardize. They are easily loosened, slipped, or broken due to long-term exposure to outdoor wind vibration, equipment operation vibration, and thermal expansion and contraction deformation of cables. This results in cables being suspended, drooping, or misaligned, causing messy cable laying and irregular layout. This not only affects the overall construction standardization and aesthetics of photovoltaic power stations, but also causes cables to be pulled, twisted, and deformed. Long-term repeated stress can easily cause the cable insulation layer to crack and the core to be damaged, accelerating cable aging and failure.

[0005] Furthermore, traditional constraint protection structures have poor versatility and low adaptability, making them unsuitable for photovoltaic cables of different diameters. They are also inconvenient to disassemble, install, and repair. When performing power plant maintenance and cable repair and replacement, it is necessary to cut the original cable ties and clips, resulting in high material consumption and low work efficiency. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects in the prior art and provide a photovoltaic array cable constraint and protection device that can solve the above-mentioned problems in the prior art.

[0007] A photovoltaic array cable constraint and protection device includes an upper shell, a lower shell, a connecting structure and a limiting structure, wherein the upper shell and the lower shell together form a cuboid cavity structure with open ends; The upper shell and the lower shell are detachably connected by a connecting structure. The left and right side walls of the upper shell are respectively provided with a first limiting hole and a second limiting hole. The two ends of the limiting structure pass through the first limiting hole and the second limiting hole respectively and together with the upper shell form a space to constrain the cable.

[0008] Furthermore, the limiting structure includes a limiting band, a limiting post, and a limiting block. One end of the limiting band is connected to the limiting post, and the other end of the limiting band passes through the first limiting hole and the second limiting hole in sequence and is located outside the upper housing. The limiting band is provided with a plurality of limiting slots. One end of the limiting block is installed on the upper housing and located above the second limiting hole. The locking head at the lower end of the limiting block is locked in the limiting slot.

[0009] Furthermore, the connection structure includes a first connection component and a second connection component. One side of the upper housing and the lower housing is connected by a plurality of first connection components, and the other side of the upper housing and the lower housing is connected by a plurality of second connection components.

[0010] Furthermore, the first connecting component includes a first locking head, which is installed on the outer side wall of the upper housing. A first locking groove adapted to the first locking head is provided on the inner wall of one side of the lower housing. The upper housing and the lower housing are connected by the first locking head and the first locking groove.

[0011] Furthermore, the second connecting assembly includes a second locking head, a connecting seat, a connecting shaft, a locking member, and a U-shaped plate. The second locking head is installed on the outer side wall of the other side of the upper housing. The connecting seat is installed on the lower housing. The connecting shaft passes through the top of the connecting seat. The two ends of the lower side of the locking member are rotatably connected to the connecting shaft. The two ends of the U-shaped plate are respectively connected to the lower end of the locking member. The top of the locking member is provided with a limiting protrusion. The locking member has a groove, and the second locking head can be locked into the groove.

[0012] Furthermore, the snap-fit ​​component has a cuboid frame structure.

[0013] Furthermore, the angle between the snap-fit ​​component and the U-shaped plate is 90-150°.

[0014] Furthermore, it also includes a fixing structure, wherein the fixing component includes an upper fixing seat, a lower fixing seat and a third connecting component, the lower fixing seat is installed on the top of the upper housing, and the upper fixing seat and the lower fixing seat are connected by the third connecting component.

[0015] Furthermore, the upper fixing seat is a cuboid frame structure with an open bottom, and the lower fixing seat matches the size of the open bottom of the upper fixing seat.

[0016] Furthermore, the upper fixed seat has installation openings on both the left and right sides. The third connecting component includes an L-shaped connector, a hinge shaft, a spring, and a fixing block. The two fixing blocks are symmetrically installed on both sides of the lower fixed seat. The fixing blocks have fixing grooves. The L-shaped connector is installed in the upper fixed seat through the hinge shaft. One end of the L-shaped connector passes through the installation opening and is connected to the top wall of the installation opening by a spring. The other end of the L-shaped connector is a hook-shaped body, and the hook-shaped body can be locked in the fixing groove.

[0017] The advantages and beneficial effects of this invention are as follows: (1) The present invention places the photovoltaic array cable to be deployed inside the open cuboid cavity formed by the lower shell and the upper shell, and uses the overall structure of the shell to form a wrap-around protection for the cable, thereby realizing the basic function of external isolation and protection of the cable.

[0018] (2) On one side of the device of the present invention, the first locking head of the first connecting component and the first locking groove engage with each other to achieve preliminary positioning and docking, ensuring that the upper and lower shells are accurately aligned and tightly fitted; on the other side, the second connecting component achieves locking and fixing, and the rotatable locking component and U-shaped plate cooperate with the second locking head to achieve locking and fixing. With the elastic support of the V-shaped elastic sheet, the locking and fixing state can be effectively maintained, preventing loosening under outdoor vibration conditions, and ensuring the integrity and stability of the connection between the upper and lower shells.

[0019] (3) This device uses a limit band in conjunction with multiple sets of limit slots and limit blocks for self-locking. It can flexibly adjust the tightness of photovoltaic cables of different diameters to meet the constraint and fixing requirements of cables of different specifications, greatly improving its versatility and adaptability. At the same time, the self-locking snap-fit ​​structure has strong stability and can effectively resist the effects of outdoor wind vibration, equipment operation vibration and cable thermal expansion and contraction. It eliminates the problems of easy loosening, slippage and breakage of traditional cable ties and buckles, ensures that the cable arrangement is neat and the constraint position is constant, avoids cable pulling and twisting deformation, and reduces cable damage and failure from the structure.

[0020] (4) This device is equipped with an independent self-locking fixing structure. It can quickly lock and fix the device by means of spring and L-shaped hook connector. It has high assembly stability and can fix the device as a whole at any installation point of the photovoltaic bracket, which is suitable for various photovoltaic array laying scenarios. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a photovoltaic array cable constraint and protection device provided by the present invention; Figure 2 for Figure 1 A magnified view of part A in the image; Figure 3 for Figure 1 A schematic diagram of the side structure; Figure 4 for Figure 3 A magnified view of part B in the image; Figure 5 for Figure 1 Another structural diagram from a different angle; Figure 6 for Figure 5 A schematic diagram of the disassembled structure; Figure 7 for Figure 6 Another structural diagram; Figure 8 This is a schematic diagram of the internal structure of a fixed structure; Figure 9 This is a cross-sectional structural diagram of a fixed structure. Figure 10 This is a schematic diagram of the implementation state structure of a photovoltaic array cable constraint protection device provided by the present invention; Explanation of reference numerals in the attached figures: Upper housing 1, lower housing 2, connecting structure 3, limiting structure 4, fixing structure 5, first limiting hole 11, second limiting hole 12, first locking head 31, first locking groove 32, second locking head 33, connecting seat 34, connecting shaft 35, locking piece 36, U-shaped plate 37, limiting protrusion 38, groove 39, V-shaped elastic sheet 40, limiting band 41, limiting post 42, limiting locking block 43, limiting locking groove 44, upper fixing seat 51, lower fixing seat 52, mounting port 53, L-shaped connector 54, hinge shaft 55, spring 56, fixing block 57, fixing groove 58. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-10As shown, a photovoltaic array cable restraint and protection device includes an upper shell 1, a lower shell 2, a connecting structure 3 and a limiting structure 4. The upper shell 1 and the lower shell 2 together form a cuboid cavity structure with open ends. The upper housing 1 and the lower housing 2 are detachably connected by a connecting structure 3. The left and right side walls of the upper housing 1 are respectively provided with a first limiting hole 11 and a second limiting hole 12. The two ends of the limiting structure 4 pass through the first limiting hole 11 and the second limiting hole 12 respectively and together with the upper housing 1 form a space for constraining the cable.

[0025] As a preferred embodiment of the above technical solution, the limiting structure 4 includes a limiting band 41, a limiting post 42, and a limiting block 43. One end of the limiting band 41 is connected to the limiting post 42, and the other end of the limiting band 41 passes through the first limiting hole 11 and the second limiting hole 12 in sequence and is located outside the upper housing 1. A plurality of limiting slots 44 are provided on the limiting band 41. One end of the limiting block 43 is installed on the upper housing 1 and located above the second limiting hole 12. The lower end of the limiting block 43 is engaged in the limiting slot 44.

[0026] As a preferred embodiment of the above technical solution, the connection structure 3 includes a first connection component and a second connection component. One side of the upper housing 1 and the lower housing 2 are connected by a plurality of first connection components, and the other side of the upper housing 1 and the lower housing 2 are connected by a plurality of second connection components.

[0027] As a preferred embodiment of the above technical solution, the first connecting component includes a first locking head 31, which is installed on the outer side wall of the upper housing 1. A first slot 32 adapted to the first locking head 31 is provided on the inner wall of one side of the lower housing 2. The upper housing 1 and the lower housing 2 are connected on one side through the first locking head 31 and the first slot 32.

[0028] As a preferred embodiment of the above technical solution, the second connecting assembly includes a second locking head 33, a connecting seat 34, a connecting shaft 35, a locking member 36, and a U-shaped plate 37. The second locking head 33 is installed on the outer side wall of the other side of the upper housing 1. The connecting seat 34 is installed on the lower housing 2. The connecting shaft 35 passes through the top of the connecting seat 34. The two ends of the lower side of the locking member 36 are rotatably connected to the connecting shaft 35. The two ends of the U-shaped plate 37 are respectively connected to the lower end of the locking member 36. The top of the locking member 36 is provided with a limiting protrusion 38. A groove 39 is opened on the locking member 36, and the second locking head 33 can be inserted into the groove 39.

[0029] Preferably, the second connecting assembly further includes a V-shaped elastic sheet 40, one end of which is connected to the lower housing 2, and the other end of which is connected to the U-shaped plate 37.

[0030] In the above technical solution, the operator can install the lower housing, and the second locking block head will press outward against the limiting protrusion of the locking component. The locking component will rotate around the connecting shaft relative to the connecting seat and compress the V-shaped elastic sheet, causing the limiting protrusion on the locking component to move above the second locking block head. At the same time, the second locking block head will engage with the groove of the locking component, and the V-shaped elastic sheet will return to its initial state, achieving reliable locking and fixing on the other side of the housing, completing the closed assembly of the entire housing. When unlocking and disassembly are required, the U-shaped plate can be pressed to achieve quick unlocking and disassembly, facilitating subsequent disassembly and maintenance. Combined with the elastic support of the V-shaped elastic sheet, the locking state can be effectively maintained, preventing loosening under outdoor vibration conditions and ensuring the integrity and stability of the connection between the upper and lower housings.

[0031] As a preferred embodiment of the above technical solution, the snap-fit ​​component 36 is a cuboid frame structure.

[0032] As a preferred embodiment of the above technical solution, the angle between the snap-fit ​​member 36 and the U-shaped plate 37 is 90-150°.

[0033] As a preferred embodiment of the above technical solution, it further includes a fixing structure 5. The fixing component 5 includes an upper fixing seat 51, a lower fixing seat 52 and a third connecting component. The lower fixing seat 52 is installed on the top of the upper housing 1, and the upper fixing seat 51 and the lower fixing seat 52 are connected by the third connecting component.

[0034] As a preferred embodiment of the above technical solution, the upper fixing seat 51 is a cuboid frame structure with an open bottom, and the lower fixing seat 52 is the same size as the open bottom of the upper fixing seat 51.

[0035] As a preferred embodiment of the above technical solution, the upper fixed base 51 has mounting openings 53 on both the left and right sides. The third connecting component includes an L-shaped connector 54, a hinge shaft 55, a spring 56, and a fixing block 57. The two fixing blocks 57 are symmetrically installed on both sides of the lower fixed base 52. The fixing block 57 has a fixing groove 58. The L-shaped connector 54 is installed in the upper fixed base 51 through the hinge shaft 55. One end of the L-shaped connector 54 passes through the mounting opening 53 and is connected to the top wall of the mounting opening 53 through the spring 56. The other end of the L-shaped connector 54 is a hook-shaped body, and the hook-shaped body can be locked in the fixing groove 58.

[0036] In the above technical solution, the fixed assembly with external mounting carriers such as photovoltaic brackets is achieved through the top fixing structure. Specifically, the top of the upper fixing seat can be fixedly assembled with external mounting carriers such as photovoltaic brackets using bolts, etc. During assembly, the lower fixing seat is fixed to the top of the upper shell, and the upper and lower fixing seats are aligned and fitted together. Self-locking is achieved through the third connecting component: press the L-shaped connector to make it rotate around the hinge axis and compress the spring. After the upper and lower fixing seats are fully fitted, release the L-shaped connector. The spring rebounds and drives the L-shaped connector to reset, so that the hook-shaped body at the end of the L-shaped connector is inserted into the fixing groove of the lower fixing seat, realizing the locking assembly of the upper and lower fixing seats. This stabilizes the entire device at the photovoltaic installation point, completing the overall installation and fixing of the device and the constraint and protection of cables.

[0037] The working principle of this invention is as follows: When this device is in operation, the photovoltaic array cables to be deployed are first placed inside the open-ended cuboid cavity formed by the lower and upper housings. The overall structure of the housing provides a wraparound protection for the cables, achieving the basic function of external isolation and protection. The upper and lower housings are detachably assembled and fixed via first and second connecting components on both sides, allowing for rapid closing and locking of the upper and lower housings, thus forming a stable protective enclosure.

[0038] During the assembly of the housing, one side achieves initial positioning and docking by engaging the first locking head and the first locking slot of the first connecting component, ensuring accurate alignment and tight fit of the upper and lower housings; the other side achieves locking and fixing by the second connecting component, which uses a rotatable locking component and a U-shaped plate in conjunction with the second locking head to achieve locking and fixing. With the elastic support of the V-shaped elastic sheet, the locking and fixing state can be effectively maintained, preventing loosening under outdoor vibration conditions and ensuring the integrity and stability of the connection between the upper and lower housings.

[0039] After the housing is assembled, the limiting structure on the upper housing is used to radially constrain and position the internal cables. One end of the limiting band is connected to the limiting post, and the other end passes through the first and second limiting holes of the upper housing and extends to the outside of the upper housing. By pulling the limiting band to adjust the tightening length, the limiting band and the upper housing cooperate to form a closed cable constraint space, which compresses and limits the photovoltaic cables inside the cavity. At the same time, the limiting block is engaged with the limiting slot at the corresponding position on the limiting band to achieve self-locking positioning of the limiting band, preventing the limiting band from shrinking and loosening due to vibration and thermal expansion and contraction, ensuring that the cable constraint position is constant and the arrangement is neat, and effectively preventing the cables from being suspended, sagging, or deviating.

[0040] The entire device can be fixedly assembled with external mounting carriers such as photovoltaic brackets through the top fixing structure. During assembly, the lower fixing seat is fixed to the top of the upper shell, and the upper and lower fixing seats are aligned and fitted together. Self-locking is achieved through the third connecting component: press the L-shaped connector to rotate it around the hinge axis and compress the spring. After the upper and lower fixing seats are fully fitted, release the L-shaped connector. The spring rebounds and drives the L-shaped connector to reset, so that the hook-shaped body at the end of the L-shaped connector engages in the fixing groove of the lower fixing seat, realizing the locking assembly of the upper and lower fixing seats. This stabilizes the entire device at the photovoltaic installation point, completing the overall installation and fixing of the device and the constraint and protection of cables.

[0041] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention includes, but is not limited to, the embodiments described in the specific implementation. Any other implementations derived by those skilled in the art based on the technical solutions of this invention are also within the scope of protection of this invention.

Claims

1. A photovoltaic array cable restraint and protection device, characterized in that: It includes an upper shell (1), a lower shell (2), a connecting structure (3) and a limiting structure (4). The upper shell (1) and the lower shell (2) together form a cuboid cavity structure with open ends. The upper housing (1) and the lower housing (2) are detachably connected by a connecting structure (3). The upper housing (1) has a first limiting hole (11) and a second limiting hole (12) on its left and right side walls respectively. The limiting structure (4) passes through the first limiting hole (11) and the second limiting hole (12) at both ends and together with the upper housing (1) to form a space for constraining the cable.

2. The photovoltaic array cable restraint and protection device according to claim 1, characterized in that: The limiting structure 4 includes a limiting band (41), a limiting post (42), and a limiting block (43). One end of the limiting band (41) is connected to the limiting post (42), and the other end of the limiting band (41) passes through the first limiting hole (11) and the second limiting hole (14) in sequence and is located outside the upper housing (1). A plurality of limiting slots (44) are arranged on the limiting band (41). One end of the limiting block (43) is installed on the upper housing (1) and located above the second limiting hole (12). The lower end of the limiting block (43) is engaged in the limiting slot (44).

3. The photovoltaic array cable restraint and protection device according to claim 2, characterized in that: The connection structure (3) includes a first connection component and a second connection component. One side of the upper shell (1) and the lower shell (2) are connected by a plurality of first connection components, and the other side of the upper shell (1) and the lower shell (2) are connected by a plurality of second connection components.

4. The photovoltaic array cable restraint and protection device according to claim 3, characterized in that: The first connecting component includes a first locking head (31), which is installed on the outer side wall of the upper housing (1). A first slot (32) adapted to the first locking head (31) is provided on the inner wall of one side of the lower housing (2). The upper housing (1) and the lower housing (2) are connected on one side through the first locking head (31) and the first slot (32).

5. A photovoltaic array cable restraint and protection device according to claim 4, characterized in that: The second connecting assembly includes a second locking head (33), a connecting seat (34), a connecting shaft (35), a locking member (36), a U-shaped plate (37), and a V-shaped elastic sheet (40). The second locking head (33) is installed on the outer side wall of the other side of the upper housing 1. The connecting seat (34) is installed on the lower housing (2). The connecting shaft (35) passes through the top of the connecting seat (34). The two ends of the lower side of the locking member (36) are rotatably connected to the connecting shaft (35). The two ends of the U-shaped plate (37) are respectively connected to the locking member (36). One end face of the V-shaped elastic sheet (40) is connected to the lower housing (2), and the other end face of the V-shaped elastic sheet (40) is connected to the U-shaped plate (37). The top of the locking member (36) is provided with a limiting protrusion (38). The locking member (36) is provided with a groove (39). The second locking head (33) can be inserted into the groove (39).

6. A photovoltaic array cable restraint and protection device according to claim 5, characterized in that: The snap-fit ​​component (36) has a cuboid frame structure.

7. A photovoltaic array cable constraint and protection device according to claim 6, characterized in that: The angle between the snap-fit ​​component (36) and the U-shaped plate (37) is 90-150°.

8. A photovoltaic array cable restraint and protection device according to claim 1, characterized in that: It also includes a fixing structure (5), the fixing component (5) includes an upper fixing seat (51), a lower fixing seat (52) and a third connecting component, the lower fixing seat (52) is installed on the top of the upper housing (1), and the upper fixing seat (51) and the lower fixing seat (52) are connected by the third connecting component.

9. A photovoltaic array cable restraint and protection device according to claim 8, characterized in that: The upper fixing seat (51) is a cuboid frame structure with an open bottom, and the lower fixing seat (52) is the same size as the open bottom of the upper fixing seat (51).

10. A photovoltaic array cable restraint and protection device according to claim 9, characterized in that: The upper fixed seat (51) has installation openings (53) on the left and right sides. The third connecting component includes an L-shaped connector (54), a hinge shaft (55), a spring (56), and a fixing block (57). The two fixing blocks (57) are symmetrically installed on both sides of the lower fixed seat (52). The fixing block (57) has a fixing groove (58). The L-shaped connector (54) is installed in the upper fixed seat (51) through the hinge shaft (55). One end of the L-shaped connector (54) passes through the installation opening (53) and is connected to the top wall of the installation opening (53) through the spring (56). The other end of the L-shaped connector (54) is a hook-shaped body, and the hook-shaped body can be locked in the fixing groove (58).

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