A rail-mounted, modular photovoltaic building integrated rooftop drainage assembly

Abstract

This invention discloses a guide rail-connected photovoltaic building integrated rooftop guide rail drainage component, which specifically includes photovoltaic modules installed on the building for power generation and several guide rail drainage channels. The guide rail drainage channels are connected to each other to form a drainage channel structure, thereby discharging water from the photovoltaic modules to form a complete rainwater channel. Poor drainage can easily lead to water accumulation in solar photovoltaic buildings, which not only affects the efficiency of photovoltaic construction but also causes water and air leaks. Therefore, this invention aims to design a guide rail-connected photovoltaic building integrated rooftop guide rail drainage component that facilitates the drainage of accumulated water and the cleaning and maintenance of photovoltaic buildings.

Description

Technical Field

[0001] This invention relates to the field of escalator protection technology, specifically to a guide rail drainage component for a photovoltaic building integrated roof using a guide rail splicing system. Background Technology

[0002] Solar photovoltaic (PV) buildings are a new concept in solar power generation, a perfect combination of solar photovoltaic systems and modern architecture. Photovoltaic modules are installed on the exterior surface of the building structure to provide electricity, integrating the solar power generation system with the roof, skylights, curtain walls, and other architectural elements to create green and environmentally friendly residences. The power generation process mainly involves direct sunlight irradiating polycrystalline silicon-coated panels to generate current, which is then stored for later use. However, in pursuit of comfort, houses are generally built near water sources and in locations with abundant rainfall. Therefore, poor drainage can easily lead to water accumulation in solar PV buildings, affecting both the efficiency of photovoltaic power generation and the lifespan of the photovoltaic materials. Furthermore, in densely populated areas, dust, leaves, and other debris can easily accumulate on the photovoltaic panels. Failure to clean these promptly can not only affect the efficiency of the PV system but also cause leaks and drafts.

[0003] Therefore, this example aims to design a rail-mounted integrated photovoltaic building roof rail drainage assembly that facilitates drainage of accumulated water and makes cleaning and maintenance of photovoltaic buildings easy. Summary of the Invention

[0004] To address the aforementioned issues, this example presents a guide rail drainage assembly for a building-integrated photovoltaic (BIPV) roof using a rail-mounted splicing system. The assembly comprises two or more integrated guide rail supports, which can be installed in pairs or individually in a series. The integrated guide rail supports are fixedly mounted on the roof of the building via telescopic support columns and an adjusting fixing plate. The telescopic support columns are arranged in a front-to-back array and fixedly connected to the lower end face of the integrated guide rail supports. The adjusting fixing plate is fixedly connected to the lower end face of the telescopic support columns. The installation angle of the integrated guide rail supports can be adjusted by changing the inclination of the lower end face of the adjusting fixing plate according to usage requirements.

[0005] Depending on the specific application, the adjustment and fixing plate can be fixedly installed on the roof using bolts or expansion screws;

[0006] The integrated guide rail support is uniformly and fixedly provided with nested plates. The nested plates are provided with nested slots with outward openings. A support plate is fixedly provided on the left end face of the paired integrated guide rail support. The support plate is provided with a sleeve that runs vertically through it. A buckle plate is provided on the upper side of the support plate and on the left side of the integrated guide rail support. A limiting plate is fixedly provided on one side of the buckle plate. A hole is provided through the limiting plate. The hole and the sleeve can slide and engage with each other. A metal support plate is clamped and supported between the pair of integrated guide rail supports. The left end of the metal support plate is engaged in the nested slot. The right end of the metal support plate is limited by the clamping of the support plate and the buckle plate.

[0007] The locking component can limit the relative position between the limiting plate and the telescopic support column, thereby locking the right end of the metal tray.

[0008] A drainage channel is provided within the integrated guide rail support. The drainage channels are interconnected, and a drainage pipe is located at one end of the integrated guide rail support. The drainage pipe is rotatably connected to the integrated guide rail support. This rotatable connection ensures that the drainage pipe remains perpendicular to the ground regardless of the installation angle of the integrated guide rail support, facilitating drainage. The drainage pipe can be fixed to the side of the building using a fixing device, thereby reducing the weight exerted on the integrated guide rail support by the drainage pipe. The drainage pipe contains a pipe with both ends open outwards and one end connected to the drainage channel within the integrated guide rail support. A traction component is provided within the pipe. The traction component includes a roller and bristles for cleaning the upper surface of the metal tray. The roller is fixedly mounted on the outer arc-shaped cylinder of the bristles. By tractioning the bristles to move and roll, the upper surface of the metal tray can be cleaned.

[0009] Preferably, a rubber pad is provided between the buckle plate and the support plate and the metal support plate, so as to reduce the pressure between the buckle plate and the support plate and the metal support plate.

[0010] Preferably, the right end of the nested bayonet is provided with a flared opening, which makes it easier to insert the left end of the metal tray into the nested bayonet. An insert sleeve is provided between the nested bayonet and the metal tray, which makes it easier to limit the position between the metal tray and the nested bayonet.

[0011] Preferably, the drainage channel is disposed within the integrated guide rail support, and the drainage channel is a drainage track with an opening to the right and upward disposed within the integrated guide rail support. The nested card plate is fixedly disposed within the drainage track and has a through hole within the drainage track. The upper end opening of the pipe is connected to the drainage track.

[0012] According to usage requirements, the lower inner wall of the drainage track is provided with an inclined surface, which is specifically higher on the right and lower on the left, and one end is higher and the other end is lower. The drainage pipe is connected to the lower side of the inclined surface of the drainage track. This inclined surface can facilitate the diversion of accumulated water into the drainage track when the tilt angle of the photovoltaic components installed on the two sets of integrated guide rail supports is small.

[0013] Preferably, the traction assembly includes a piston component that is slidably disposed within the pipe and can slide within the pipe. The piston component includes counterweights connected to each other and a piston body fixedly disposed outside the counterweights. The piston body can be supported by a plastic product. The piston body separates the upper and lower parts of the pipe and can slide within the pipe. A traction rope is fixedly connected to the upper end of the piston component.

[0014] A drain outlet communicating with the outside is provided on the inner wall of the pipe near the lower end;

[0015] A connecting beam is fixedly supported between two sets of integrated guide rail supports. A front and rear set of connecting beams are respectively provided between the two sets of integrated guide rail supports. Guide rail A and guide rail B are fixedly mounted on opposite end faces of the connecting beams, with guide rail A positioned above guide rail B. A support plate is positioned between the connecting beams, abutting against and slidably connected to guide rails A and B. The front and rear support plates are fixedly connected via the connecting beam. Brush bristles are rotatably connected between the support plates, and the shaft of the brush bristles extends to the other side of the support plate and is fixedly connected to a gear. The gear meshes with the lower inner wall of guide rail A. A return spring is fixedly connected between the right end face of the support plate and the left end face of the integrated guide rail support.

[0016] The other end of the traction rope is fixedly connected to the left end face of the pallet. When the water in the pipe exceeds a certain weight, the water and the weight of the piston itself pull the pallet to the left, and then the upper end face of the metal pallet can be cleaned by the roller and the brush.

[0017] The connecting beam has a latch on the end face near the metal support plate. The piston can only descend when the weight of the water in the pipe reaches a preset value.

[0018] Preferably, a photovoltaic panel module is fixedly mounted on the upper end face of the metal tray, and the upper end face of the photovoltaic panel module abuts against the roller. The upper end face of the photovoltaic panel module can be cleaned by the movement and rolling of the brush bristles and the roller.

[0019] Preferably, the bayonet includes a jump hole formed in the connecting beam body with its opening facing the metal support plate. A jump block is slidably disposed in the jump hole. A spring is fixedly disposed between the jump block and the inner wall of the jump hole. One end of the jump block extending out of the jump hole is spherical. When the weight of the water accumulated in the pipe exceeds the limiting force generated by the spring and the jump block, the support plate pushes the jump block into the jump hole and causes the support plate to slide to the left under the weight of the piston. After the piston descends below the drain outlet and the water in the pipe is discharged, the support plate returns to its initial state and moves to the right side of the jump block under the traction force of the return spring.

[0020] Preferably, a guide rail A is provided at the arc-shaped turnout position inside the pipe, and the guide rail A can adjust the traction direction of the traction rope.

[0021] Preferably, the locking assembly includes a bolt post and a threaded hole on the telescopic support post. The threaded hole can be threaded to the right end of the bolt post, and a locking plate is sleeved on the bolt post. By tightening the bolt post, the locking plate can press the opening against the telescopic support post. Depending on the usage, a hexagonal nut can be provided at the left end of the bolt post. By rotating the hexagonal nut, the bolt post and the telescopic support post can be locked together.

[0022] Preferably, the lower end of the tray abuts against the two side edges of the metal tray, and a pulley is provided in the lower end face of the tray, the lower end of the pulley abuts against the upper end face of the metal tray, and the pulley is used to reduce the friction between the bristles and the metal tray.

[0023] Beneficial effects: During use, the integrated guide rail supports at both ends support and drain the metal tray and the photovoltaic module, which reduces the requirements for the plane of the metal plate in traditional installation and reduces the overall weight of the metal tray and the integrated guide rail supports, thus reducing the weight pressure on the roof. The drainage through the drainage track can enhance the drainage effect, reduce water accumulation in the photovoltaic structure, and the accumulation of water can drive the tray to move and the rolling of the roller can clean the upper end face of the photovoltaic module. Attached Figure Description

[0024] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of a guide rail splicing photovoltaic building integrated roof guide rail drainage component according to the present invention;

[0026] Figure 2 This is a schematic diagram of the guide rail drainage assembly;

[0027] Figure 3 This is a side view of the guide rail drainage assembly.

[0028] Figure 4 This is a schematic diagram of the traction assembly.

[0029] Figure 5 This is a schematic diagram of the traction assembly.

[0030] Figure 6 This is a structural diagram of the buckle plate and the support plate. Detailed Implementation

[0031] The following is combined Figures 1 to 6 The present invention will be described in detail below. For ease of description, the directions referred to below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of the projection relationship are consistent in all directions: up, down, left, right, front, and back.

[0032] This invention relates to a guide rail drainage assembly for a rooftop photovoltaic building integrated system, which is connected by a guide rail. The invention will be further described below with reference to the accompanying drawings:

[0033] The present invention discloses a guide rail splicing type photovoltaic building integrated roof guide rail drainage component, as shown in the attached figure. Figure 1 -Appendix Figure 6 The guide rail drainage assembly shown includes two or more integrated guide rail supports 101 in pairs. The integrated guide rail supports 101 can be installed in pairs or in single arrays to cooperate with each other. The integrated guide rail supports 101 are fixedly installed on the roof of the building through telescopic support columns 116 and adjusting fixing plates 121. The telescopic support columns 116 are arranged in a front-to-back array and fixedly connected to the lower end face of the integrated guide rail supports 101. The adjusting fixing plate 121 is fixedly connected to the lower end face of the telescopic support columns 116. According to the usage requirements, the installation angle of the integrated guide rail supports 101 can be adjusted by adjusting the inclination of the lower end face of the adjusting fixing plate 121.

[0034] Depending on the specific application, the adjusting and fixing plate 121 can be fixedly installed on the roof using bolts or expansion screws;

[0035] The integrated guide rail support 101 is uniformly and fixedly provided with nested clamping plates 133. The nested clamping plates 133 are provided with nested slots 104 with outward openings. A support plate 108 is fixedly provided on the left end face of the paired integrated guide rail support 101. The support plate 108 is provided with a sleeve 113 that runs vertically through it. A buckle plate 105 is provided on the upper side of the support plate 108 and on the left side of the integrated guide rail support 101. A limiting plate 106 is fixedly provided on one side of the buckle plate 105. An opening 114 is provided through the limiting plate 106. The opening 114 and the sleeve 113 can slide and engage with each other. A metal support plate 123 is clamped and supported between the pair of integrated guide rail supports 101. The left end of the metal support plate 123 is engaged in the nested slot 104. The right end of the metal support plate 123 is limited by the clamping of the support plate 108 and the buckle plate 105.

[0036] The relative position between the limiting plate 106 and the telescopic support column 116 can be restricted by the locking component, thereby locking the right end of the metal tray 123;

[0037] A drainage channel is provided within the integrated guide rail support 101. These drainage channels are interconnected, and a drain pipe 131 is located at one end of the integrated guide rail support 101. The drain pipe 131 is rotatably connected to the integrated guide rail support 101. This rotatable connection ensures that the drain pipe 131 remains perpendicular to the ground regardless of the installation angle of the integrated guide rail support 101, facilitating drainage. The drain pipe 131 can be fixed to the side of the building using a fixing device, thereby reducing drainage pressure. The weight applied by the pipe 131 to the integrated guide rail support 101, the drain pipe 131 is provided with a pipe 132 with both ends open to the outside and one end open to the drain channel in the integrated guide rail support 101, the pipe 132 is provided with a traction component, the traction component includes a roller 156 and a brush 151 for cleaning the upper end face of the metal tray 123, the roller 156 is fixedly set on the outer arc-shaped cylinder of the brush 151, the upper end face of the metal tray 123 can be brushed and cleaned by the traction component pulling the brush 151 to move and roll.

[0038] Depending on the usage, a rubber pad is provided between the buckle plate 105 and the support plate 108 and the metal support plate 123. The rubber pad can reduce the pressure between the buckle plate 105 and the support plate 108 and the metal support plate 123.

[0039] The right end of the nesting slot 104 is provided with a flared opening, which makes it easier to insert the left end of the metal tray 123 into the nesting slot 104. An insert sleeve is provided between the nesting slot 104 and the metal tray 123, which makes it easier to limit the position between the metal tray 123 and the nesting slot 104.

[0040] Beneficial, according to the appendix Figure 1 Appendix Figure 2 and appendix Figure 4 As shown, the drainage channel is set inside the integrated guide rail support 101. The drainage channel is a drainage track 103 with an opening to the right and upward set inside the integrated guide rail support 101. The nested card plate 133 is fixedly set inside the drainage track 103 and has a through hole 102 inside the drainage track 103. The upper opening of the pipe 132 is connected to the drainage track 103.

[0041] According to usage requirements, the lower inner wall of the drainage track 103 is provided with an inclined surface, which is specifically higher on the right and lower on the left, and one end is higher and the other end is lower. The drainage pipe 131 is connected to the lower side of the inclined surface of the drainage track 103. This inclined surface can facilitate the diversion of accumulated water into the drainage track 103 when the tilt angle of the photovoltaic components installed on the two sets of integrated guide rail supports 101 is small.

[0042] Beneficial, according to the appendix Figure 1 To be continued Figure 5 The traction assembly shown includes a piston 142 slidably disposed within the pipe 132 and capable of sliding within the pipe 132. The piston 142 includes counterweights connected to each other and a piston body fixedly disposed outside the counterweights. The piston body can be supported by a plastic material. The piston body separates the upper and lower parts of the pipe 132 and can slide within the pipe 132. A traction rope 143 is fixedly connected to the upper end of the piston 142.

[0043] A drain outlet 141 communicating with the outside is provided on the inner wall of the pipe 132 near the lower end;

[0044] A connecting beam 122 is fixedly supported between two sets of integrated guide rail supports 101. A front and a rear set of connecting beams 122 are respectively provided between the two sets of integrated guide rail supports 101. Guide rails A144 and B146 are fixedly mounted on opposite end faces of the connecting beams 122, with guide rail A144 positioned above guide rail B146. A support plate 152 is provided between the connecting beams 122, and the support plate 152 is connected to the guide rail A144. 44 and the guide rail B146 are abutted and slidably connected to each other. The front and rear support plates 152 are fixedly connected by the connecting beam 148. The bristles 151 are rotatably connected between the support plates 152 and the shaft of the bristles 151 extends to the other side of the support plate 152 and is fixedly connected to the gear 159. The gear 159 is meshed with the lower inner wall of the guide rail A144. A return spring 147 is fixedly connected between the right end face of the support plate 152 and the left end face of the integrated guide rail support 101.

[0045] The other end of the traction rope 143 is fixedly connected to the left end face of the pallet 152. When the water in the pipe 132 exceeds a certain weight, the water and the weight of the piston 142 itself pull the pallet 152 to move to the left, and then the upper end face of the metal pallet 123 can be cleaned by the roller 156 and the brush 151.

[0046] The connecting beam 122 has a latch on the end face near the metal support plate 123. The piston 142 can only be lowered when the weight of water accumulated in the pipe 132 reaches a preset value.

[0047] Beneficial, as attached Figure 1 To be continued Figure 3 A photovoltaic power generation module 135 is fixedly installed on the upper end face of the metal tray 123. The upper end face of the photovoltaic power generation module 135 abuts against the roller 156. The upper end face of the photovoltaic power generation module 135 can be cleaned by the movement and rolling of the brush bristles 151 and the roller 156.

[0048] Beneficial, as attached Figure 4 and appendix Figure 5The bayonet shown includes a jump hole 157 opened within the connecting beam 122 and facing the metal support plate 123. A jump block 147 is slidably disposed within the jump hole 157. A spring 158 is fixedly disposed between the jump block 147 and the inner wall of the jump hole 157. One end of the jump block 147 extending out of the jump hole 157 is spherical. When the weight of the water accumulated in the pipe 132 exceeds the limiting force generated by the spring 158 and the jump block 147, the support plate 152 pushes the jump block 147 to slide into the jump hole 157, causing the support plate 152 to slide to the left under the weight of the piston 142. After the piston 142 descends below the drain outlet 141 and the water in the pipe 132 is discharged, the support plate 152 returns to its initial state and moves to the right side of the jump block 147 under the traction force of the return spring 147.

[0049] Advantageously, a guide rail A144 is provided at the arc-shaped turnout position inside the pipe 132, and the guide rail A144 can adjust the traction direction of the traction rope 143.

[0050] Beneficial, as attached Figure 1 To be continued Figure 3 The locking assembly shown includes a bolt post 111 and a threaded hole 115 on the telescopic support post 116. The threaded hole 115 can be threaded into the right end of the bolt post 111, and a locking plate 112 is sleeved on the bolt post 111. By tightening the bolt post 111, the locking plate 112 can press the opening 114 against the telescopic support post 116. Depending on the usage, a hexagonal nut can be provided at the left end of the bolt post 111. By rotating the hexagonal nut, the bolt post 111 and the telescopic support post 116 can be locked together.

[0051] Advantageously, the lower end of the tray 152 abuts against the two side edges of the metal tray 123, and a pulley 161 is provided in the lower end face of the tray 152. The lower end of the pulley 161 abuts against the upper end face of the metal tray 123. The pulley 161 is used to reduce the friction between the bristles 151 and the metal tray 123.

[0052] In the initial state, the tray 152 moves to the right to the maximum extent and the jumper block 147 blocks the tray 152, thereby limiting the position of the jumper block 147. The piston 142 moves upward to the maximum extent in the pipe 132. At this time, the drain outlet 141 is located on the lower side of the piston 142.

[0053] During installation, the adjusting and fixing plate 121 is fixedly installed on the roof. The length of the telescopic support column 116 and the tilt angle of the adjusting and fixing plate 121 are adjusted according to the specific roof conditions. The left end of the metal support plate 123 is inserted into the nesting slot 104 and fixed by nesting. The right end of the metal support plate 123 is placed on the support plate 108, and the right end of the metal support plate 123 is locked by moving the buckle plate 105.

[0054] When it rains, raindrops fall on the upper end face of the metal support plate 123. Due to the inclined surface of the metal support plate 123, rainwater flows into the drainage track 103. The water is then guided by the lower inner wall of the drainage track 103 and enters the pipe 132, where it accumulates. When the weight of the water in the pipe 132 reaches a certain level, the traction force of the traction rope 143 pulls the support plate 152 to overcome the limitation of the jumping block 147 and pulls the support plate 152 to the left. During the movement of the pallet 152 to the left, the meshing connection between the gear 159 and the guide rail A144 causes the gear 159 to rotate as the pallet 152 moves, which in turn causes the brush bristles 151 to rotate, thereby cleaning the upper end face of the metal pallet 123 and the photovoltaic power generation module 135. When the piston 142 descends below the drain outlet 141, the water accumulated on the upper side of the piston 142 is discharged through the drain outlet 141.

[0055] The beneficial effects of this invention are as follows: In use, the integrated guide rail supports 101 at both ends support and drain the metal tray 123 and the photovoltaic panel module 135, which reduces the requirements for the plane of the traditional metal plate installation and reduces the overall weight of the metal tray 123 and the integrated guide rail supports 101, thus reducing the weight pressure on the roof. The drainage through the drainage track 103 enhances the drainage effect, reduces water accumulation in the photovoltaic panel structure, and the accumulation of water can drive the tray 152 to move and the rolling of the roller 156 can clean the upper surface of the photovoltaic panel module 135. It should be noted that the water accumulation in the pipe 132 will increase and reach the trigger weight only on rainy days. Therefore, the upper surface of the photovoltaic panel module 135 can be cleaned by the sweeping of the roller 156 and the washing of dust by rain when the tray 152 moves.

[0056] Through the above methods, those skilled in the art can make various changes according to the working mode within the scope of this invention.

Claims

1. A rail drainage assembly for rail-mounted photovoltaic building integrated roof, the rail drainage assembly comprising two or more integrated rail supports, the integrated rail supports being fixedly installed on the roof of a building through telescopic support columns and adjusting fixing plates, the telescopic support columns being fixedly connected to the lower end surface of the integrated rail supports, the adjusting fixing plates being fixedly connected to the lower end surface of the telescopic support columns, the installation angle of the integrated rail supports being adjusted by adjusting the inclination of the lower end surface of the adjusting fixing plates according to the use requirements; each of the integrated rail supports is uniformly and fixedly provided with a nested clamping plate, the nested clamping plate is provided with a nested clamping hole opening outward, a supporting plate is fixedly provided on the left end surface of one of the integrated rail supports, the supporting plate is provided with a sleeve opening upward and downward, a clamping plate is provided on the upper side of the supporting plate and located on the left side of the integrated rail support, a limiting plate is fixedly provided on one side of the clamping plate, the limiting plate is provided with a hollow opening, the hollow opening and the sleeve opening can be slidably connected with each other, a metal supporting plate is clamped and supported between a pair of the integrated rail supports, the left end of the metal supporting plate is clamped in the nested clamping hole, and the right end of the metal supporting plate is limited by the clamping of the supporting plate and the clamping plate; the relative position between the limiting plate and the telescopic support column is limited by a locking assembly, and the right end of the metal supporting plate is locked; a drainage channel is provided in the integrated rail support, the drainage channels are connected with each other and provided with a drainage pipe at one end of the integrated rail support, the drainage pipe is rotatably connected with the integrated rail support, the drainage pipe is provided with a pipeline opening outward at both ends and connected with the drainage channel in the integrated rail support at one end, the pipeline is provided with a traction assembly, the traction assembly comprises a roller and bristles for cleaning the upper end surface of the metal supporting plate, and the roller is fixedly provided on the outer side of the arc-shaped cylinder of the bristles; the drainage channel is provided in the integrated rail support, the drainage channel is a drainage track opening rightward and upward in the integrated rail support, the nested clamping plate is fixedly provided in the drainage track and provided with a through hole in the drainage track, and the upper end opening of the pipeline is connected with the drainage track; the lower inner wall of the drainage track is provided with an inclined surface, the inclined surface is high on the right side and low on the left side and high at one end and low at the other end, and the drainage pipe is connected to the low side of the inclined surface of the drainage track; the traction assembly comprises a piston member slidably provided in the pipeline and slidable in the pipeline, the piston member comprises a counterweight and a piston body fixedly provided on the outer side of the counterweight, and the upper end of the piston member is fixedly connected with a traction rope; a drainage opening is provided on the inner wall of one side of the pipeline close to the lower end and connected with the outside. The fixed support between the two sets of integrated guide rail supports is provided with a connecting beam body, and a set of connecting beam bodies is arranged between the two sets of integrated guide rail supports. The connecting beam body is fixedly provided with guide rails A and guide rails B on the end face of the opposite side. A supporting plate is arranged between the connecting beam bodies. The supporting plate is in abutment with and slidably connected to the guide rails A and the guide rails B. The supporting plates on the front and rear sides are fixedly connected by connecting beams. The bristles are rotatably connected between the supporting plates, and the rotating shaft of the bristles extends to the other side of the supporting plate and is fixedly connected with a gear. The gear is in meshing connection with the inner wall of the lower side of the guide rail A. A return spring is fixedly connected between the right end face of the supporting plate and the left end face of the integrated guide rail support. The other end of the traction rope is fixedly connected to the left end face of the supporting plate. When the water in the pipeline exceeds a certain weight, the water and the weight of the piston itself will pull the supporting plate to the left, and then the drum and the bristles can clean the upper end face of the metal supporting plate. The end face of the connecting beam body near the side of the metal supporting plate is provided with a bayonet. The piston can only be lowered when the weight of the water in the pipeline reaches the preset value.

2. The rail drainage assembly for use in a rail-mounted photovoltaic building integrated roof according to claim 1, characterized in that: A photovoltaic panel module is fixedly arranged on the upper end face of the metal supporting plate. The upper end face of the photovoltaic panel module is in abutment with the drum. The movement and rolling of the bristles and the drum can clean the upper end face of the photovoltaic panel module.

3. The rail drainage assembly for use in a rail-mounted photovoltaic building integrated roof according to claim 1, characterized in that: The bayonet includes a jump hole opened in the connecting beam body and opening towards the side of the metal supporting plate. A jump block is slidably arranged in the jump hole. A spring is fixedly arranged between the jump block and the inner wall of the jump hole. One end of the jump block extending out of the jump hole is spherical.

4. The rail drainage assembly for use in a rail photovoltaic building integrated roof according to claim 3, characterized in that: A guide rail A is arranged at the arc-shaped rotating head position in the pipeline. The guide rail A can adjust the pulling direction of the traction rope.

5. The rail drainage assembly for use in a rail photovoltaic building integrated roof according to claim 4, characterized in that: The locking assembly includes a bolt column and a threaded hole opened on the telescopic support column. The threaded hole can be threadedly connected with the right end of the bolt column. A locking clamping plate is sleeved on the bolt column. The locking clamping plate can abut against the hollow opening and the telescopic support column by tightening the bolt column. According to the use condition, a hexagonal nut can be arranged on the left end of the bolt column.

6. A rail drainage assembly for use in a rail assembly for a building integrated photovoltaic roof according to claim 5, wherein: The lower end of the supporting plate abuts against the two side edges of the metal supporting plate. A pulley is arranged in the lower end face of the supporting plate. The lower end of the pulley abuts against the upper end face of the metal supporting plate. The pulley is used to reduce the friction between the bristles and the metal supporting plate.

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