Wind-resistant solar photovoltaic module's mounting structure

文档序号:1965742 发布日期:2021-12-14 浏览:28次 中文

阅读说明:本技术 一种抗风型太阳能光伏组件的安装结构 (Wind-resistant solar photovoltaic module's mounting structure ) 是由 汪化锋 于 2021-07-08 设计创作,主要内容包括:本发明公开了一种抗风型太阳能光伏组件的安装结构,属于光伏组件技术领域,在承托板与支撑架之间增设U型承托架、进风囊以及导磁球,在正常情况下,配合支撑架,提高了光伏组件的承托效果,在大风、飓风来临时,利用一对进风囊对气流进行上下方向的分流引入,气胀磁推囊内导入气流后膨胀扩大,以触发对磁推限位构件的推动动作,磁推限位构件被推动后对光伏组件上的嵌设片进行挤压,利用风流提高光伏组件与安装框之间的衔接效果,与此同时,向下导出的气流对挤压锥体进行强力挤压,以免挤压锥体在大风、飓风作用下减弱与地面之间的连接效果,有效提高该安装结构的抗风性。(The invention discloses an installation structure of a wind-resistant solar photovoltaic module, belonging to the technical field of photovoltaic modules, a U-shaped bearing bracket, an air inlet bag and a magnetic guide ball are additionally arranged between the bearing plate and the support frame, and the bearing effect of the photovoltaic module is improved by matching with the support frame under normal conditions, when strong wind or hurricane comes, a pair of air inlet bags are used for shunting and introducing air flow in the up-down direction, the air flow is introduced into the air expansion magnetic pushing bag and then expanded, so as to trigger the pushing action of the magnetic pushing limiting component, the magnetic pushing limiting component extrudes the embedded sheet on the photovoltaic component after being pushed, the joining effect between the photovoltaic component and the mounting frame is improved by utilizing wind current, meanwhile, the airflow led out downwards strongly extrudes the extrusion cone, so as to prevent the extrusion cone from weakening the connection effect with the ground under the action of strong wind and hurricane, and effectively improve the wind resistance of the mounting structure.)

1. The utility model provides a wind-resistant type solar photovoltaic module's mounting structure, inlays including being used for photovoltaic module to establish installing frame (1) of installation, installing frame (1) bottom is equipped with the support frame that is connected with ground, its characterized in that: a supporting plate (2) for supporting the photovoltaic module is arranged on the bottom end face of the mounting frame (1), embedded pieces (13) are arranged on the upper end wall and the lower end wall of the photovoltaic module, and the upper end wall and the lower end wall of the supporting plate (2) are respectively abutted and connected with a pair of embedded pieces (13);

be connected with U type support bracket (4) on the support frame, U type support bracket (4) both ends upside all is connected with into air bag (5), and is a pair of all be equipped with on air bag (5) and lead magnetic ball (6), it is a pair of lead magnetic ball (6) to inlay to establish and connect in bearing board (2), air intake (501) have all been seted up to air bag (5) perisporium, it pushes away bag (7) with the physiosis magnetism that advances air bag (5) and be linked together to lead magnetic ball (6) inside being equipped with, it is a pair of all to have seted up movable chamber on the upper and lower end wall of bearing board (2) the activity intracavity is equipped with the magnetism that corresponds with a pair of physiosis magnetism and pushes away the spacing member that bag (7) position corresponds respectively, the bottom of U type support bracket (4) is equipped with a plurality of extrusion cones that insert ground.

2. The installation structure of a wind-resistant solar photovoltaic module according to claim 1, wherein: the utility model discloses a supporting plate, including installing frame (1), bottom end inner wall all seted up and be used for inlaying and establish piece (13) and inlay the chamber of establishing of inlaying of establishing the connection about installing frame (1), the bottom face of installing frame (1) inlays and establishes bottom plate (3) that are located supporting plate (2) lower extreme, set up on bottom plate (3) and be linked together air vent (301) that set up with the activity chamber.

3. The mounting structure of a wind-resistant solar photovoltaic module according to claim 2, wherein: the bearing plate (2) and the bottom plate (3) are both provided with a through cavity for embedding and installing the magnetic ball (6), and the bottom plate (3) is propped against the lower ends of the pair of embedding pieces (13).

4. The installation structure of a wind-resistant solar photovoltaic module according to claim 1, wherein: the pair of air inlet bags (5) are both of hollow spherical structures, and the upper end and the lower end of each air inlet bag (5) are respectively communicated with the magnetic conductive ball (6) and the U-shaped bearing bracket (4) through communicating pipes.

5. The installation structure of a wind-resistant solar photovoltaic module according to claim 1, wherein: the inflatable magnetic pushing bag (7) comprises an elastic magnetic isolation bag (701) and a magnetic ball (702), the magnetic ball (702) is installed inside the elastic magnetic isolation bag (701), and the elastic magnetic isolation bag (701) is connected with the inside of the air inlet bag (5) through an air pipe.

6. The mounting structure of a wind-resistant solar photovoltaic module according to claim 5, wherein: the elastic magnetic isolation capsule (701) is made of elastic materials, a layer of magnetic isolation particles are tightly wrapped on the outer end wall of the elastic magnetic isolation capsule (701), and a sealing gasket connected with an air pipe is arranged at a communicating pipe connected with the magnetic guiding ball (6).

7. The installation structure of a wind-resistant solar photovoltaic module according to claim 6, wherein: the magnetic pushing limiting component comprises a magnetic bar (8) which is movably embedded in the inner side of the bearing plate (2), the outer end of the magnetic bar (8) is fixedly connected with a limiting plate (9) which is movably connected in a cavity, and the two sides of the upper end of the limiting plate (9) are connected with the inner wall of the bearing plate (2) through extension springs (10).

8. The mounting structure of a wind-resistant solar photovoltaic module according to claim 7, wherein: the magnetic ball (702) and the magnetic bar (8) are arranged in a magnetic repulsion mode, and a guide cavity corresponding to the position of the magnetic bar (8) is formed in the bearing plate (2).

9. The mounting structure of a wind-resistant solar photovoltaic module according to claim 8, wherein: the end wall of the limiting plate (9) far away from the magnetic rod (8) is provided with a plurality of extrusion balls (901), and the side wall of the embedding sheet (13) is coated with an elastic capsule layer matched with the extrusion balls (901).

10. The installation structure of a wind-resistant solar photovoltaic module according to claim 1, wherein: the extrusion cone comprises a positioning column (11) connected to the bottom end of the U-shaped supporting bracket (4), a positioning cone (12) is arranged inside the positioning column (11), a limiting ring located above the positioning cone (12) is further arranged in the positioning column (11), and an overflow hole is formed in the side wall, located above the positioning cone (12), of the positioning column (11).

Technical Field

The invention relates to the technical field of photovoltaic modules, in particular to an installation structure of a wind-resistant solar photovoltaic module.

Background

With the development of solar energy application technology, photovoltaic power generation is more and more emphasized and widely applied by people, and at the present stage, a photovoltaic power generation assembly device is generally composed of a support and a photovoltaic assembly laid on the support.

In the prior art, most of the supports are not provided with the wind-resistant protection devices, so that when a strong wind or a hurricane comes, the supports and the photovoltaic modules on the supports are extremely easy to damage, the solar panels cannot be stably fixed on the supports, the solar panels are easy to fall off from the supports, and the mounting stability of the solar panels is still required to be improved.

Therefore, the mounting structure of the wind-resistant solar photovoltaic module is provided to effectively solve some problems in the prior art.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an installation structure of a wind-resistant solar photovoltaic module, when a strong wind or a hurricane comes, a pair of wind inlet bags are used for shunting and introducing air flow in the vertical direction, the air flow is introduced into an inflatable magnetic pushing bag and then expanded to trigger the pushing action of a magnetic pushing limiting component, the magnetic pushing limiting component is pushed to extrude an embedded piece on the photovoltaic module, and meanwhile, the air flow led out downwards strongly extrudes an extrusion cone so as to prevent the extrusion cone from weakening the connection effect with the ground under the action of the strong wind or the hurricane.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides an anti-wind type solar photovoltaic module's mounting structure, inlay the installing frame of establishing the installation including being used for photovoltaic module, the installing frame bottom is equipped with the support frame that is connected with ground, installing frame bottom face is equipped with bearing photovoltaic module's bearing board, it establishes the piece all to be equipped with on photovoltaic module's the last lower extreme wall to inlay, the end wall supports the linking mutually with a pair of piece of establishing of inlaying respectively about the bearing board, be connected with U type bearing bracket on the support frame, U type bearing bracket both ends upside all is connected with into the bellows, all be equipped with on a pair of inlet bellows and lead the magnetic ball, a pair of leading the magnetic ball inlays to establish and connects in the bearing board, the air intake has all been seted up to air inlet bag perisporium, lead the inside physiosis magnetism that is linked together with the inlet bellows of magnetic ball, movable chamber has all been seted up on the upper and lower extreme wall of bearing board, a pair of movable intracavity is equipped with the magnetism that a pair of physiosis magnetism pushes away the corresponding spacing component of bag position respectively, the bottom of U type bearing bracket is equipped with a plurality of inserting ground extrusion cones.

Further, the installation frame upper and lower extreme inner wall all seted up be used for inlaying establish the piece inlay establish the connection inlay establish the chamber, the bottom face of installation frame inlays to establish and installs the bottom plate that is located the bearing board lower extreme, sets up the air vent that is linked together the setting with the activity chamber on the bottom plate, under normal condition, the activity chamber is linked together through a plurality of air vents and external, does benefit to the ventilation, plays the radiating effect to photovoltaic module.

Furthermore, the bearing plate and the bottom plate are both provided with a through cavity for embedding and installing the magnetic ball, and the bottom plate is propped against the lower ends of the pair of embedding pieces.

Furthermore, the pair of air inlet bags are both of hollow spherical structures, the upper end and the lower end of each air inlet bag are respectively communicated with the magnetic guide ball and the U-shaped support bracket through communicating pipes, the arranged air inlets are used for temporarily introducing air flow in strong wind and hurricane, and the air flow is respectively introduced into the magnetic guide ball and the U-shaped support bracket through the communicating pipes.

Furthermore, the inflatable magnetic pushing capsule comprises an elastic magnetic isolation capsule and a magnetic ball, the magnetic ball is arranged inside the elastic magnetic isolation capsule, and the elastic magnetic isolation capsule is connected with the inside of the air inlet capsule through an air pipe.

Furthermore, the elastic magnetic isolation capsule is made of elastic materials, a layer of magnetic isolation particles are tightly wrapped on the outer end wall of the elastic magnetic isolation capsule, and a sealing gasket connected with the air pipe is arranged at a communicating pipe connected with the magnetic conduction ball.

Further, the magnetic pushing limiting component comprises a magnetic bar movably embedded in the inner side of the bearing plate, the outer end of the magnetic bar is fixedly connected with a limiting plate movably connected in a movable cavity, and two sides of the upper end of the limiting plate are connected with the inner wall of the bearing plate through extension springs.

Furthermore, the magnetic ball and the magnetic rod are arranged in a magnetic repulsion mode, and a guide cavity corresponding to the position of the magnetic rod is formed in the bearing plate.

Further, the limiting plate is equipped with a plurality of extrusion balls on keeping away from the end wall of bar magnet, inlays to establish on the piece lateral wall the cladding have with extrusion ball assorted elasticity cyst layer, when the limiting plate establishes the piece extrusion setting to the inlaying, the extrusion ball is crowded in the elasticity cyst layer, has further improved linking effect between them.

Furthermore, the extrusion cone comprises a positioning column connected to the bottom end of the U-shaped supporting bracket, a positioning cone is arranged inside the positioning column, a limiting ring located above the positioning cone is further arranged in the positioning column, and an overflow hole is formed in the side wall of the positioning column located above the positioning cone.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through add U type bearing bracket between bearing board and support frame, air inlet bag and lead the magnetic ball, under normal conditions, the cooperation support frame, photovoltaic module's bearing effect has been improved, in the strong wind, hurricane comes temporarily, utilize a pair of air inlet bag to carry out the reposition of redundant personnel introduction of direction from top to bottom to the air current, the inflation magnetic pushes away the expansion behind the leading-in air current in the bag and enlarges, in order to trigger the promotion action that pushes away stop member to the magnetism, the magnetism pushes away the piece of establishing of inlaying on the photovoltaic module after being promoted and extrudees, utilize the distinguished and admirable linking effect between improvement photovoltaic module and the installing frame, meanwhile, the air current of deriving downwards carries out powerful extrusion to the extrusion cone, in order to avoid the extrusion cone at the strong wind, the effect of hurricane weaken and the effect of being connected between the ground.

(2) This scheme lower extreme inner wall all offers to be used for inlaying on the installing frame and establishes the piece and inlay and establish inlaying of connection and establish the chamber, and the bottom face of installing frame inlays to establish and installs the bottom plate that is located the bearing board lower extreme, sets up the air vent that is linked together the setting with the activity chamber on the bottom plate, and under normal condition, the activity chamber is linked together through a plurality of air vents and external, does benefit to the ventilation, plays the radiating effect to photovoltaic module.

(3) The pair of air inlet bags are of hollow spherical structures, the upper end and the lower end of each air inlet bag are communicated with the magnetic guide ball and the U-shaped bearing bracket through communicating pipes respectively, the arranged air inlets are used for temporarily introducing air flow in strong wind and hurricane, the air flow is respectively introduced into the magnetic guide ball and the U-shaped bearing bracket through the communicating pipes, on one hand, the air flow is introduced to trigger extrusion action, and on the other hand, the air inlet bags play a role in shunting and reducing pressure.

(4) The scheme is that the inflatable magnetic pushing bag connected with the air inlet bag is arranged on the inner side of the bearing plate and comprises an elastic magnetic isolation bag and a magnetic ball, the magnetic ball is installed inside the elastic magnetic isolation bag, the elastic magnetic isolation bag is made of elastic materials, a layer of magnetic isolation particles are tightly wrapped on the outer end wall of the elastic magnetic isolation bag, a sealing gasket connected with an air pipe is arranged at the position of a communication pipe connected with the magnetic ball, the introduced air flow in the air inlet bag is introduced into the elastic magnetic isolation bag through the air pipe, gaps among the magnetic isolation particles are expanded and increased, and therefore the magnetic isolation effect on the magnetic ball is reduced, and at the moment, the magnetic ball plays a role in repelling magnetic pushing on the magnetic pushing limiting component.

(5) The magnetic push limiting component comprises a magnetic bar and a limiting plate, the two sides of the upper end of the limiting plate are connected with the inner wall of the bearing plate through extension springs, magnetic balls and the magnetic bar are arranged in a repellent mode, after the elastic magnetic isolation capsule is increased due to air flow, the magnetic balls play a magnetic push role on the magnetic bar, the limiting plate pushes one side of the embedded piece, on one hand, the limiting plate plays an extrusion role on the embedded piece, the positioning effect of the embedded piece is improved, on the other hand, the dust in the movable cavity is pushed out in the limiting plate moving process, and the dust cleaning effect is played.

(6) This scheme sets up a plurality of extrusion balls on the end wall that the bar magnet was kept away from to the limiting plate, inlays to establish on the piece lateral wall cladding have with extrusion ball assorted elasticity cyst bag layer, when the limiting plate establishes the piece extrusion setting to the inlaying, the extrusion ball is crowded to go into in the elasticity cyst bag layer, has further improved linking effect between them.

(7) According to the scheme, the plurality of extrusion cones are arranged at the bottom end of the U-shaped supporting bracket, when the supporting bracket is installed, the positioning column and the positioning cone are inserted into the ground, when strong wind and hurricane come temporarily, airflow is guided into the positioning column through the air inlet bag and the U-shaped supporting bracket, overflows through the overflow hole in the positioning column, and further extrudes the positioning cone in the guiding process, so that the supporting bracket is prevented from being in insecure contact with the ground under the action of the strong wind and the hurricane.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a second perspective view of the present invention;

FIG. 3 is a schematic view of the mounting frame of the present invention being disassembled from the photovoltaic module;

FIG. 4 is a bottom view of the joint of the mounting frame, the supporting plate and the air intake bag according to the present invention;

FIG. 5 is a side cross-sectional view of the present invention;

FIG. 6 is a partial cross-sectional view of the joint of the air inlet bag, the magnetic conductive ball and the magnetic push limiting member of the present invention;

FIG. 7 is a second partial sectional view of the joint of the air inlet bag, the magnetic conductive ball and the magnetic push limiting member of the present invention;

FIG. 8 is a schematic view of the present invention showing the structure of the magnetic push stopper;

FIG. 9 is a schematic structural view of the junction of the U-shaped support bracket, the air inlet bag and the extrusion cone of the present invention;

FIG. 10 is a cross-sectional view of the junction of the U-shaped support bracket, air inlet bladder and crush cone of the present invention.

The reference numbers in the figures illustrate:

the device comprises an installation frame 1, a bearing plate 2, a bottom plate 3, a 301 vent hole, a 4U-shaped bearing bracket, an air inlet bag 5, an air inlet 501, a magnetic guide ball 6, an air expansion magnetic push bag 7, an elastic magnetic isolation bag 701, a magnetic ball 702, a magnetic rod 8, a limiting plate 9, a 901 extrusion ball, a tension spring 10, a positioning column 11, a positioning cone 12 and an embedding piece 13.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, an installation structure of wind-resistant solar photovoltaic module comprises an installation frame 1 for embedding and installing the photovoltaic module, a support frame connected to the ground is disposed at the bottom end of the installation frame 1, the support frame is connected to the ground through a positioning pile commonly used in the prior art, a support plate 2 for supporting the photovoltaic module is disposed at the bottom end surface of the installation frame 1, embedding pieces 13 are disposed on the upper and lower end walls of the photovoltaic module, the upper and lower end walls of the support plate 2 are respectively abutted and connected with a pair of embedding pieces 13, embedding cavities for embedding and connecting the embedding pieces 13 are disposed on the inner walls of the upper and lower ends of the installation frame 1, a bottom plate 3 disposed at the lower end of the support plate 2 is embedded and installed at the bottom end surface of the installation frame 1, and air vents 301 communicated with the movable cavities are disposed on the bottom plate 3, under normal state, the movable cavity is communicated with the outside through a plurality of vent holes 301, is favorable for ventilation, and plays a role in heat dissipation for the photovoltaic assembly.

Referring to fig. 4-5, a U-shaped support bracket 4 is connected to the support frame, air inlet bags 5 are connected to the upper sides of both ends of the U-shaped support bracket 4, a pair of air inlet bags 5 are provided with magnetic guiding balls 6, a pair of magnetic guiding balls 6 are embedded and connected in the support plate 2, through cavities for embedding and installing the magnetic guiding balls 6 are provided on the support plate 2 and the bottom plate 3, the bottom plate 3 abuts against the lower ends of the pair of embedded pieces 13, air inlets 501 are provided on the peripheral walls of the air inlet bags 5, the pair of air inlet bags 5 are of a hollow spherical structure, the upper and lower ends of the air inlet bags 5 are respectively communicated with the magnetic guiding balls 6 and the U-shaped support bracket 4 through communicating pipes, the air inlets 501 are provided for temporarily introducing air currents in strong winds and hurricanes, and the air currents are respectively introduced into the magnetic guiding balls 6 and the U-shaped support bracket 4 through the communicating pipes.

Referring to fig. 5-7, the magnetic conductive ball 6 is internally provided with an inflatable magnetic pushing bag 7 communicated with the air inlet bag 5, the upper and lower end walls of the support plate 2 are both provided with movable cavities, a pair of movable cavities are respectively provided with a magnetic pushing limiting member corresponding to the pair of inflatable magnetic pushing bags 7, and the inflatable magnetic pushing bags 7 are expanded after air flow is introduced into the inflatable magnetic pushing bags 7 so as to trigger the pushing action of the magnetic pushing limiting members.

Specifically, the inflatable magnetic pushing bag 7 comprises an elastic magnetic isolating bag 701 and a magnetic ball 702, the magnetic ball 702 is installed inside the elastic magnetic isolating bag 701, the elastic magnetic isolating bag 701 is connected with the inside of the air inlet bag 5 through an air pipe, the elastic magnetic isolating bag 701 is made of elastic materials, a layer of magnetic isolating particles are tightly wrapped on the outer end wall of the elastic magnetic isolating bag 701, a sealing gasket connected with the air pipe is arranged at a communicating pipe connected with the magnetic conducting ball 6, air flow led in the air inlet bag 5 is led into the elastic magnetic isolating bag 701 through the air pipe to expand the elastic magnetic isolating bag to increase gaps among the magnetic isolating particles, so that the magnetic isolating effect on the magnetic ball 702 is reduced, the magnetic pushing limiting component comprises a magnetic rod 8 movably embedded inside the supporting plate 2, the outer end of the magnetic rod 8 is fixedly connected with a limiting plate 9 movably connected inside the movable cavity, both sides of the upper end of the limiting plate 9 are connected with the inner wall of the supporting plate 2 through a tension spring 10, magnetic ball 702 and 8 magnetism of bar magnet repel each other and set up, hold 2 inside direction chambeies of offering corresponding with 8 positions of bar magnet, after elasticity separates magnetism cyst bag 701 because of the leading-in atmospheric pressure increase of air current, magnetic ball 702 plays the magnetism that repels to bar magnet 8 and pushes away the effect, make limiting plate 9 to inlaying and establish 13 one sides of piece and promote, limiting plate 9 plays the extrusion to inlaying and establishing piece 13, improve the location effect to inlaying and establishing piece 13 under the realization increase condition of air current, in order to avoid inlaying and establish piece 13 and be connected insecure with installing frame 1.

Referring to fig. 5 and 7-8, a plurality of extrusion balls 901 are arranged on the end wall of the limiting plate 9 away from the magnetic rod 8, the side wall of the embedding sheet 13 is coated with an elastic capsule layer matched with the extrusion balls 901, when the limiting plate 9 extrudes the embedding sheet 13, the extrusion balls 901 are extruded into the elastic capsule layer, so that the connection effect of the extrusion balls 901 is further improved, and the extrusion balls 901 are made of D3o material so as to improve the contact buffering effect of the extrusion balls and the embedding sheet.

Referring to fig. 9-10, the bottom end of the U-shaped supporting bracket 4 is provided with a plurality of extrusion cones inserted into the ground, each extrusion cone comprises a positioning column 11 connected to the bottom end of the U-shaped supporting bracket 4, a positioning cone 12 is disposed inside the positioning column 11, a limiting ring disposed above the positioning cone 12 is further disposed inside the positioning column 11, an overflow hole is disposed on the side wall of the positioning column 11 above the positioning cone 12, the lower end of the positioning column 11 penetrates through the supporting frame and extends downward, when the positioning column 11 and the positioning cone 12 are installed, the positioning column is inserted into the ground, the overflow hole is exposed above the ground, after the strong wind and hurricane come temporarily, the air flow is guided into the positioning column 11 through the air inlet bag 5 and the U-shaped support bracket 4, the air flow overflows through the overflow hole on the positioning column 11, and further squeezing the positioning cone 12 during the guiding process to prevent the support frame from contacting the ground surface insecurely under the action of strong wind and hurricane.

The components used in the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

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