Photovoltaic base and casting method for roof

Abstract

The present invention discloses a photovoltaic base and a casting method for use on a roof, wherein the photovoltaic base and the casting method include edge bases placed on both sides and an extension base located between the edge bases on both sides, wherein the number of the extension bases placed between the edge bases can be selected according to actual usage conditions, and the casting steps of the edge base and the extension base include: lofting, locating ribs, mold reinforcement, cushion layer placement, steel bar placement, wire pulling to adjust the flatness of the template, U-shaped part positioning, construction joint filling, foam glue application, and mold removal and transportation, wherein a three-way steel bar frame is placed in the extension base and the edge base to enhance the overall strength of the extension base and the edge base, and the three-way steel bar frame is bundled by a clamp. This example aims to design a photovoltaic base and a casting method for use on a roof that is easy to cast, dry and transport and can adjust the direct angle of the photovoltaic panel in real time following the rotation and revolution angles of the earth.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic bases, and in particular to a photovoltaic base applied to a roof and a casting method. Background Art

[0002] Solar energy is an inexhaustible green and environmentally friendly resource. The solar roof is the most important part of residential buildings that receives sunlight. In order to implement China's energy conservation and emission reduction goals promised to the world, strengthen policy support for the new energy economy strategy, and accelerate the application of solar photovoltaic technology in urban and rural construction, relevant state ministries and commissions have launched the Solar Roof Plan.

[0003] The solar roof project aims to break through and solve problems such as insufficient photovoltaic building integrated design capabilities, low integration of photovoltaic products and buildings, difficulty in photovoltaic grid connection, and low market awareness.

[0004] The solar roof plan comprehensively considers factors such as economy and social benefits. At this stage, it actively promotes the demonstration of integrated photovoltaic buildings such as solar roofs and photovoltaic curtain walls in large and medium-sized cities with developed economies and good industrial bases; actively supports the development of off-grid power generation in rural and remote areas, implements power supply to the countryside, and implements national people-friendly policies.

[0005] The solar roof plan mobilizes the enthusiasm of all sectors of society through demonstration projects and promotes the implementation of relevant national policies. It strengthens the publicity of demonstration projects, expands their influence, enhances market awareness, and forms a good social atmosphere for the development of solar photovoltaic products; promotes the implementation of policies such as grid-connected electricity prices, forms a policy synergy, and amplifies policy effects; and takes the application of photovoltaic buildings as an important part of building energy conservation, and actively promotes their use in new buildings, energy-saving renovation of existing buildings, and urban lighting.

[0006] The solar roof policy stipulates that demonstration projects must be greater than 50kW, which means that an installation area of ​​at least 400 square meters is required. It is difficult for general residential buildings to participate. Eligible owners will be concentrated in public and commercial buildings such as schools, hospitals and governments. After considering the subsidy from the Ministry of Finance, the cost per kilowatt-hour can be reduced to 0.58 yuan / kWh. It is still unclear whether the photovoltaic grid-connected electricity price can be given a premium on the thermal power grid-connected electricity price, but even if there is no premium, since the power generation cost is lower than the power grid sales price, owners still have the motivation to build photovoltaic projects to generate electricity for their own use instead of purchasing electricity from the grid. Moreover, it can be expected that local governments will provide additional subsidy policies, and the cost of power generation will be further reduced.

[0007] When installing solar photovoltaic panels, they need to be supported by installing a base. Currently, cement bases are mostly used. However, the cement bases generally used are large in size, and are not convenient for pouring, drying, and carrying. In addition, when in use, the angle of the photovoltaic panel is fixed. With the influence of the rotation and revolution of the earth, the direct angle between the photovoltaic panel and the sunlight is changing at any time, which also causes waste of power generation. Therefore, this example aims to design a photovoltaic base and casting method for use on the roof that is easy to pour, dry and carry, and can adjust the direct angle of the photovoltaic panel in real time according to the rotation and revolution angle of the earth. Summary of the invention

[0008] In order to solve the above problems, this example designs a photovoltaic base and a casting method for roofs, wherein the photovoltaic base and the casting method include edge bases placed on both sides and an extension base located between the edge bases on both sides, and the number of extension bases placed between the edge bases can be selected according to actual usage conditions, and the casting steps of the edge base and the extension base are: setting out, punching positioning ribs, installing molds for reinforcement, placing cushion layers, placing steel bars, pulling wires to adjust the flatness of the molds, positioning U-shaped parts, filling construction joints, applying foam glue, and removing molds for transportation;

[0009] Wherein, a three-way steel bar frame is placed in the expansion base and the edge base to enhance the overall strength of the expansion base and the edge base, and the three-way steel bar frame is bound by a clamp;

[0010] A substrate is provided in the end surface opposite to the edge base at both ends and both sides of the extension base, and a connecting block extending out of the edge base and the extension base is fixedly provided on the end surface of one side of the substrate, and an angle adjustment device is provided on the substrate between two groups of the edge bases, between the extension bases, or between the edge base and the extension base, and a photovoltaic substrate for photovoltaic power generation is installed on the angle adjustment device. The angle adjustment device adjusts the angle between the power generation part of the end surface of the photovoltaic substrate and the sunlight according to the angle of sunlight on that day to achieve the maximum power generation efficiency and automatic angle adjustment of the photovoltaic substrate angle, and the photovoltaic substrate is supported and adjusted by the front and rear rows of photovoltaic bases.

[0011] Preferably, the angle adjustment device comprises a connecting assembly, a swing rod is fixedly provided on the rear end surface of the connecting assembly, a swing push rod is rotatably provided at the rear end of the swing rod, a photovoltaic base block is fixedly provided on the lower end surface of the photovoltaic substrate, and the upper end of the swing push rod extends upward and is rotatably connected to the photovoltaic base block;

[0012] A through cavity is provided in the connecting component so as to pass through the left and right sides, an inner rotating block is rotatably provided in the through cavity, and bayonet sockets which can be engaged with the connecting block are respectively provided on the left and right sides of the inner rotating block and open outward, a notch which opens outward is provided in the inner rotating block, a motor base block is fixedly provided on the inner wall on the upper side of the notch, a motor which is electrically connected to the sensor on the photovoltaic substrate is fixedly provided in the motor base block, a rotating half gear is connected to the power output shaft at the left and right ends of the motor, a gear ring is fixedly provided on the inner wall on the front side of the through cavity, the gear ring and the rotating half gear are meshed and transmitted by a transmission gear, the transmission gear shaft is provided on the inner wall of the notch and the rotating half gear is a gear with missing teeth, and the motor drives the rotating half gear. The rotation of the rotating half gear drives the transmission gear to rotate, which can drive the tooth ring to rotate, and then drives the connecting component and the motor base block fixed on the connecting component to rotate, thereby pushing the photovoltaic substrate on one side to deflect, and the inclination angle of the photovoltaic substrate can be adjusted by pushing the motor base blocks on the front and rear sides. When the notch of the rotating half gear rotates to the transmission gear position, the transmission gear loses engagement with the rotating half gear. At this time, the connecting component loses power and rotates. The rotation of the connecting component is buffered by the rotation buffer component arranged on the peripheral side of the motor base block and the arc-shaped inner wall on the peripheral side of the through cavity, thereby reducing the damage of the rotation vibration to the photovoltaic substrate.

[0013] Preferably: the rotary buffer assembly comprises an annular fixed ring fixedly arranged on the arc-shaped inner wall of the through cavity, the inner rotating block and the motor base block are provided with a notch opening outward and allowing the fixed ring to cross, the fixed ring is provided with an annular groove opening toward one side of the motor, and an annular buffer ring is rotatably arranged in the annular groove;

[0014] A ratchet fixing block is fixedly arranged on the lower side and rear side surface of the motor base block, and the ratchet fixing block is connected to the buffer ring ratchet at one end far from the motor, that is, the kinetic energy consumed by the forward rotation of the buffer ring and the ratchet fixing block is less than the kinetic energy consumed by the reverse rotation of the buffer ring and the ratchet fixing block, and a rotating groove is arranged in a circular groove in communication with the arc-shaped inner wall on the circumference of the annular groove, and a heavy wheel meshing with the outer arc-shaped surface of the buffer ring is rotatably arranged in the rotating groove, and the heavy wheel is made of metal and is used to consume the momentum of the buffer ring during reversal, thereby reducing the flipping speed of the rocker arm, thereby increasing the reversal stability of the rocker arm and the connecting assembly.

[0015] Preferably, locking thread grooves are provided on the inner wall of the bayonet and the connecting block, and the inner rotating block and the connecting block are locked by screws and the locking thread grooves provided on the bayonet and the connecting block.

[0016] Preferably, the motor is electrically connected to the photovoltaic power generation assembly on the upper end surface of the photovoltaic substrate and provides power consumption for the motor by generating electricity.

[0017] Preferably: the three-way steel bar frame comprises a steel bar frame composed of steel bars in the transverse direction, the vertical direction and the longitudinal direction, and the junctions of the steel bars in the three directions are locked by the positioner to form an overall frame;

[0018] The positioning device includes a cubic positioning block, in which a steel bar groove which penetrates in three directions and opens outward is provided, and the steel bar can be clamped with the steel bar groove. A protrusion is fixedly provided on one side of the steel bar groove, and a tightening rope is fixedly provided on the other side of the steel bar groove. The steel bars clamped in the steel bar groove can be tied and fixed by the tightening rope and the protrusion. The overall strength of the expansion base and the edge base can be increased by the three-way steel bar frame, and the convenience and efficiency of bundling the steel bars can be accelerated by the positioning device.

[0019] Preferably, the blocking block is entirely made of high-strength polyester material.

[0020] Beneficial effects: This example splits the photovoltaic base into several pieces and combines them into photovoltaic bases of different specifications, thereby making the casting, drying and transportation of the photovoltaic base more convenient. At the same time, this example also points out a clamping device that is convenient for bundling steel bars to form a steel bar frame. Compared with the previous direct bundling with iron wire, the clamping device is more convenient for bundling, which greatly speeds up the forming efficiency and effect of the steel bar frame. Through the photovoltaic base in this example, the angle of the photovoltaic panel can be adjusted in real time according to the change in the direct angle of sunlight and the earth's surface caused by the revolution and rotation of the earth, so as to better cater to the direct exposure of the photovoltaic panel to light. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] For ease of explanation, the present invention is described in detail with reference to the following specific embodiments and accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic base applied to a roof according to the present invention;

[0023] Figure 2 is a structural schematic diagram of the photovoltaic base viewed from the left;

[0024] Figure 3 for Figure 1 A partial enlarged schematic diagram of the structure;

[0025] Figure 4 for Figure 3 Schematic diagram of the structure in the "AA" direction;

[0026] Figure 5 for Figure 3 Schematic diagram of the structure in the left direction of the structure;

[0027] Figure 6 for Figure 3 Schematic diagram of the structure in the left direction of the structure;

[0028] Figure 7 It is a structural schematic diagram of the positioning device;

[0029] Figure 8 is a structural schematic diagram of an edge base;

[0030] Fig. 9 This is a schematic diagram of the structure of the expansion base;

[0031] Fig.10 It is a schematic diagram of the structure of the rotating half gear. DETAILED DESCRIPTION

[0032] Combine the following Figures 1 to 10 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent.

[0033] The present invention relates to a photovoltaic base and a casting method for a roof, and the present invention will be further described below in conjunction with the accompanying drawings of the present invention:

[0034] The photovoltaic base and casting method for roof of the present invention are as follows: Figure 1 -Attached Fig.10 The photovoltaic base and casting method shown in the figure include edge bases 104 placed on both sides and expansion bases 108 located between the edge bases 104 on both sides. The number of expansion bases 108 placed between the edge bases 104 can be selected according to actual usage. The casting steps of the edge base 104 and the expansion base 108 are: lofting, locating ribs, mold reinforcement, cushion placement, steel bar placement, wire drawing to adjust the flatness of the template, U-shaped piece positioning, filling construction joints, foaming glue, and demolding and transportation;

[0035] A three-way steel frame is placed in the expansion base 108 and the edge base 104 to enhance the overall strength of the expansion base 108 and the edge base 104, and the three-way steel frame is bound by a positioner;

[0036] A substrate 106 is provided in the end surface opposite to the edge base 104 at both ends and both sides of the extended base 108, and a connecting block 107 extending out of the edge base 104 and the extended base 108 is fixedly provided on one end surface of the substrate 106, and an angle adjustment device is provided on the substrate 106 between two groups of the edge bases 104, between the extended bases 108, or between the edge base 104 and the extended base 108, and a photovoltaic substrate 101 for photovoltaic power generation is installed on the angle adjustment device. The angle adjustment device adjusts the angle between the power generation part of the upper end surface of the photovoltaic substrate 101 and the sunlight according to the angle of sunlight on that day to achieve the maximum power generation efficiency and automatically adjust the angle of the photovoltaic substrate 101, and the photovoltaic substrate 101 is supported and adjusted by the front and rear rows of photovoltaic bases.

[0037] See attached Figure 1 And attached Figure 7 As shown, the angle adjustment device in the embodiment of the invention includes a connecting component 109, a swing rod 136 is fixedly provided on the rear end surface of the connecting component 109, a swing push rod 103 is rotatably provided at the rear end of the swing rod 136, a photovoltaic base block 102 is fixedly provided on the lower end surface of the photovoltaic substrate 101, and the upper end of the swing push rod 103 extends upward and is rotatably connected to the photovoltaic base block 102;

[0038] A through cavity 114 is provided in the connecting component 109 so as to pass through the through cavity 114. An inner rotating block 121 is rotatably provided in the through cavity 114. The left and right sides of the inner rotating block 121 are respectively provided with bayonet holes 122 which are open outward and can be engaged with the connecting block 107. A notch 124 which is open outward is provided in the inner rotating block 121. A motor base block 126 is fixedly provided on the inner wall of the upper side of the notch 124. A motor 129 which is electrically connected to the sensor on the photovoltaic substrate 101 is fixedly provided in the motor base block 126. Rotating half gears 125 are connected to the power output shafts at the left and right ends of the motor 129. A gear ring 128 is fixedly provided on the inner wall of the front side of the through cavity 114. The gear ring 128 and the rotating half gear 125 are meshed and transmitted through a transmission gear 127. The rotating shaft of the transmission gear 127 is provided on the inner wall of the notch 124 and the rotating half gear 125 is a gear with missing teeth. The motor 129 drives the rotating half gear 125 to rotate, thereby driving the transmission gear 127 to rotate, which can drive the gear ring 128 to rotate, and then drives the connecting component 109 and the motor base block 126 fixedly arranged on the connecting component 109 to rotate, thereby pushing the photovoltaic substrate 101 on one side to deflect, and the tilt angle of the photovoltaic substrate 101 can be adjusted by pushing the motor base blocks 126 on the front and rear sides. When the notch of the rotating half gear 125 rotates to the position of the transmission gear 127, the transmission gear 127 loses engagement with the rotating half gear 125. At this time, the connecting component 109 loses power and rotates. The rotation of the connecting component 109 is buffered by the rotation buffer component arranged on the peripheral side of the motor base block 126 and the peripheral arc-shaped inner wall of the through cavity 114, thereby reducing the damage of the rotation vibration to the photovoltaic substrate 101.

[0039] See attached Figure 1 And attached Figure 6 As shown, the rotary buffer assembly in the embodiment of the invention comprises an annular fixed ring 118 fixedly arranged on the arc-shaped inner wall of the circumference of the through cavity 114, the inner rotating block 121 and the motor base block 126 are provided with a notch 131 opening outward and allowing the fixed ring 118 to cross, the fixed ring 118 is provided with an annular groove 132 opening toward the motor 129, and the annular buffer ring 117 is rotatably arranged in the annular groove 132;

[0040] A ratchet fixing block 119 is fixedly provided on the lower side and rear side of the motor base block 126, and the ratchet fixing block 119 is connected to the buffer ring 117 ratchet at one end far from the motor 129, that is, the kinetic energy consumed by the forward rotation of the buffer ring 117 and the ratchet fixing block 119 is less than the kinetic energy consumed by the reverse rotation of the buffer ring 117 and the ratchet fixing block 119, and a rotating groove 116 is provided in the inner arc-shaped inner wall of the annular groove 132, and a heavy wheel 115 meshing with the outer arc-shaped surface of the buffer ring 117 is rotatably provided in the rotating groove 116, and the heavy wheel 115 is made of metal and is used to consume the momentum of the buffer ring 117 when it is reversed, thereby reducing the flipping speed of the rocker arm 136, thereby increasing the reversal stability of the rocker arm 136 and the connecting component 109.

[0041] Advantageously, locking thread grooves 113 are provided on the inner wall of the bayonet 122 and the connecting block 107 , and the inner rotating block 121 and the connecting block 107 are locked by screws and the locking thread grooves 113 provided on the bayonet 122 and the connecting block 107 .

[0042] Advantageously, the motor 129 is electrically connected to the photovoltaic power generation assembly on the upper end surface of the photovoltaic substrate 101 and provides power consumption for the motor 129 by generating electricity.

[0043] See attached Figure 1 And attached Figure 8 , Attachment Fig. 9 As shown, the three-way steel bar frame in the embodiment of the invention includes a steel bar frame composed of steel bars 105 in the transverse direction, the vertical direction and the longitudinal direction, and the intersections of the steel bars in the three directions are locked by the positioning device to form an overall frame;

[0044] The positioning device includes a cube-shaped positioning block 142, and a steel bar groove 144 that penetrates three directions and opens outward is arranged in the positioning block 142. The steel bar 105 can be clamped with the steel bar groove 144. A protrusion 143 is fixedly arranged on one side of the steel bar groove 144, and a tightening rope 141 is fixedly arranged on the other side of the steel bar groove 144. The steel bars clamped into the steel bar groove 144 can be tied and fixed by the tightening rope 141 and the protrusion 143. The overall strength of the expansion base 108 and the edge base 104 can be increased by the three-way steel bar frame, and the convenience and efficiency of bundling the steel bars 105 can be accelerated by the positioning device.

[0045] Advantageously, the blocking block 142 is entirely made of high-strength polyester material.

[0046] During installation, the edge bases 104 and the steel bars 105 on both sides are moved, and the connection blocks 107 on both sides are inserted into the bayonet holes 122 at both ends. At this time, the locking thread grooves 113 provided on the inner rotating block 121 and the connection block 107 are locked and fixed by screws;

[0047] In the initial state, the photovoltaic substrate 101 is in a horizontal state. At this time, the swing rods 136 in the front and rear rows are in a state of maximum backward swing. At the same time, the rotating half gear 125 is meshed with the transmission gear 127, and the transmission gear 127 is in a meshing state with the gear ring 128.

[0048] At this time, when the light sensor detects light, the motor 129 in one side of the two rows of photovoltaic bases in the front-to-back direction is started, and then the gear ring 128 is driven to rotate through the transmission gear 127, and then the connecting assembly 109 is turned over, and then the swing rod 136 on the front side (or the rear side) is turned forward, and then the swing push rod 103 on one side is pushed up, and then one end of the photovoltaic substrate 101 is turned to cater to the sunlight. When the swing rod 136 rotates to the maximum angle and the transmission gear 127 rotates to the rotation half gear 12 5, the transmission gear 127 loses the meshing constraint and the connecting assembly 109 rotates in the opposite direction under the action of the gravity of the photovoltaic substrate 101 and the swing rod 136. At this time, the heavy wheel 115 and the buffer ring 117 and the ratchet connection between the buffer ring 117 and the ratchet fixing block 119 consume the turning kinetic energy of the connecting assembly 109 caused by the descent of one end of the photovoltaic substrate 101 and the turning of the swing rod 136, thereby reducing the reversal speed of the connecting assembly 109, thereby increasing the stability of the descent of one end of the photovoltaic substrate 101;

[0049] By adjusting the flip angle of the photovoltaic substrate 101 on the front and rear sides, it can adapt to and cater to the changes in light angles throughout the day, thereby achieving maximum photovoltaic power generation efficiency.

[0050] Beneficial effects of the present invention: This example splits the photovoltaic base into several pieces and combines them into photovoltaic bases of different specifications, thereby making the casting, drying and transportation of the photovoltaic base more convenient. At the same time, this example also points out a clamping device that is convenient for bundling steel bars to form a steel bar frame. Compared with the previous direct bundling with iron wire, the clamping device is more convenient for bundling, which greatly speeds up the forming efficiency and effect of the steel bar frame. Through the photovoltaic base in this example, the angle of the photovoltaic panel can be adjusted in real time according to the change in the direct angle between the sunlight and the earth's surface caused by the revolution and rotation of the earth, so as to better cater to the direct exposure of the photovoltaic panel to light.

[0051] Through the above methods, those skilled in the art can make various changes according to the working mode within the scope of the present invention.

Claims

1. A photovoltaic base and casting method applied to a roof, the photovoltaic base and casting method comprising edge bases placed on both sides and an extension base located between the edge bases on both sides, the number of extension bases placed between the edge bases can be selected according to actual usage, and the casting steps of the edge base and the extension base are: lofting, locating ribs, mold reinforcement, cushion placement, steel bar placement, wire drawing to adjust the flatness of the template, U-shaped piece positioning, filling construction joints, foam glue, and demolding and transportation; in, A three-way steel bar frame is placed in the expansion base and the edge base to enhance the overall strength of the expansion base and the edge base, and the three-way steel bar frame is bound by a clamp; A substrate is arranged in the end surface of one side opposite to the edge base at both ends and both sides of the expansion base, and a connection block extending out of the edge base and the expansion base is fixedly arranged on the end surface of one side of the substrate, and an angle adjustment device is arranged on the substrate between two groups of the edge bases, between the expansion bases, or between the edge base and the expansion base, and a photovoltaic substrate for photovoltaic power generation is installed on the angle adjustment device, and the angle adjustment device adjusts the angle between the power generation part of the end surface of the photovoltaic substrate and the sunlight according to the angle of sunlight on that day to achieve the maximum power generation efficiency and automatic angle adjustment of the photovoltaic substrate angle, and the photovoltaic substrate is supported and adjusted by the front and rear rows of photovoltaic bases; The angle adjustment device comprises a connecting assembly, a swing rod is fixedly arranged on the rear end surface of the connecting assembly, a swing push rod is rotatably arranged at the rear end of the swing rod, a photovoltaic base block is fixedly arranged on the lower end surface of the photovoltaic substrate, and the upper end of the swing push rod extends upward and is rotatably connected to the photovoltaic base block; A through cavity is provided in the connecting component so as to pass through the connecting component on the left and right sides, an inner rotating block is rotatably provided in the through cavity, and bayonet holes which can be engaged with the connecting block are respectively provided on the left and right sides of the inner rotating block and are opened outward, and a notch which opens outward is provided in the inner rotating block, a motor base block is fixedly provided on the upper inner wall of the notch, a motor which is electrically connected to the sensor on the photovoltaic substrate is fixedly provided in the motor base block, a rotating half gear is connected to the power output shaft at the left and right ends of the motor, a gear ring is fixedly provided on the front inner wall of the through cavity, the gear ring and the rotating half gear are meshed and transmitted by a transmission gear, the transmission gear rotating shaft is provided on the inner wall of the notch and the rotating half gear is a toothless gear, and the rotation of the connecting component is buffered by a rotation buffer component provided on the peripheral side surface of the motor base block and the arc-shaped inner wall on the peripheral side of the through cavity, thereby reducing the damage of the photovoltaic substrate to the rotation vibration.

2. A photovoltaic base and casting method for a roof as claimed in claim 1, characterized in that: The rotary buffer assembly comprises an annular fixed ring fixedly arranged on the arc-shaped inner wall of the through cavity, the inner rotating block and the motor base block are provided with a notch opening outward and allowing the fixed ring to cross, the fixed ring is provided with an annular groove opening toward one side of the motor, and an annular buffer ring is rotatably arranged in the annular groove; A ratchet fixing block is fixedly arranged on the lower side and rear side surface of the motor base block, and the ratchet fixing block is connected to the buffer ring ratchet at one end far from the motor, that is, the kinetic energy consumed by the forward rotation of the buffer ring and the ratchet fixing block is less than the kinetic energy consumed by the reverse rotation of the buffer ring and the ratchet fixing block, and a rotating groove is arranged in communication with the arc-shaped inner wall on the circumference of the annular groove, and a heavy wheel meshing with the outer arc-shaped surface of the buffer ring is rotatably arranged in the rotating groove, and the heavy wheel is made of metal and is used to consume the momentum of the buffer ring when it is reversed.

3. A photovoltaic base and casting method for roof application as claimed in claim 2, characterized in that: The inner wall of the bayonet and the connecting block are provided with locking thread grooves, and the inner rotating block and the connecting block are locked by screws and the locking thread grooves provided on the bayonet and the connecting block.

4. A photovoltaic base and casting method for roof application as claimed in claim 1, characterized in that: The motor is electrically connected to the photovoltaic power generation assembly on the upper end surface of the photovoltaic substrate and provides power consumption for the motor by generating electricity.

5. A photovoltaic base and casting method for roof application as claimed in claim 2, characterized in that: The three-way steel bar frame comprises a steel bar frame composed of steel bars in the transverse direction, the vertical direction and the longitudinal direction, and the intersections of the steel bars in the three directions are locked by the positioning device to form an overall frame; The positioning device includes a cubic positioning block, in which a steel bar groove is provided which penetrates in three directions and opens outward, and the steel bar can be clamped with the steel bar groove. A protrusion is fixedly provided on one side of the steel bar groove, and a tightening rope is fixedly provided on the other side of the steel bar groove. The steel bars clamped in the steel bar groove can be tied and fixed by the tightening rope and the protrusion.

6. A photovoltaic base and casting method for roof application as claimed in claim 5, characterized in that: The blocking block is made entirely of high-strength polyester material.

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