A cantilever photovoltaic tracking device with an energy storage assistance assembly

Abstract

The utility model relates to photovoltaic system technical field, concretely relates to a cantilever type photovoltaic tracking device with energy storage power assisting component, include: support piece, pivot, including central shaft and movable outer tube, central shaft is connected in support piece, movable outer tube is covered in central shaft, movable outer tube can rotate around the axis of central shaft, intermediate piece, intermediate piece is connected in movable outer tube, photovoltaic module is used to carry out photovoltaic power generation, and one end of photovoltaic module is connected in intermediate piece, energy storage power assisting component includes elastic part, traction piece and transmission part, one end of elastic part is connected in support piece, the other end of elastic part is connected with one end of traction piece, and transmission part is used for adjusting the force arm of the force of elastic part acting on photovoltaic module, transmission wheel, the rotation axis of transmission wheel is coaxial with movable outer tube, and is connected with intermediate piece, and the other end of traction piece is connected in transmission wheel. The utility model has the advantages of: reduce cantilever type photovoltaic tracking device's maintenance cost and production cost.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic system technology, and specifically to a cantilevered photovoltaic tracking device with an energy storage assist component. Background Technology

[0002] In fields such as industrial manufacturing, mechanical engineering, and transportation, the motion of loads often exhibits periodic characteristics during the driving process. For example, in the reciprocating motion of a photovoltaic module around an axis in a cantilever structure, when the center of gravity of the photovoltaic module moves downward, it is a labor-saving motion; when the center of gravity of the photovoltaic module moves upward, it is a labor-intensive motion. Therefore, during the motion of the photovoltaic module, it repeatedly undergoes alternating labor-saving and labor-intensive motions. The mechanical energy released during the labor-saving phase is consumed in various forms, leading to energy waste. In recent years, with the development of green energy and efficient transmission technology, issues related to energy recovery and reuse have become a research hotspot.

[0003] To address these issues, an energy storage assist component is designed for cantilever photovoltaic tracking devices. In these devices, the photovoltaic modules are connected to a movable outer cylinder within a rotating shaft. This movable outer cylinder also forms a transmission connection with the energy storage assist component. Consequently, during operation, the movable outer cylinder is subjected to forces in two directions, making it prone to damage. Once damaged, it becomes impossible to drive the photovoltaic modules for tracking. Therefore, increasing the service life of the movable outer cylinder is a pressing issue that needs to be addressed. Utility Model Content

[0004] The purpose of this invention is to provide a cantilevered photovoltaic tracking device with an energy storage assist component, in order to solve the problem that the movable outer cylinder is easily damaged in existing cantilevered photovoltaic tracking devices.

[0005] The present invention is achieved by the following technical solution:

[0006] In one aspect of this utility model, a cantilevered photovoltaic tracking device with an energy storage assist component includes:

[0007] Support components

[0008] A rotating shaft includes a central shaft and a movable outer cylinder. The central shaft is connected to the support member, and the movable outer cylinder is sleeved on the central shaft. The movable outer cylinder can rotate around the axis of the central shaft.

[0009] Intermediate component, the intermediate component being connected to the movable outer cylinder;

[0010] A photovoltaic module for generating photovoltaic power, one end of which is connected to the intermediate component;

[0011] An energy storage and assist component includes an elastic element, a traction element, and a transmission part. One end of the elastic element is connected to the support element, and the other end of the elastic element is connected to one end of the traction element. The transmission part is connected to the support element, and the transmission part cooperates with the traction element to adjust the lever arm of the force exerted by the elastic element on the photovoltaic module.

[0012] The transmission wheel has its rotation axis coaxial with the movable outer cylinder and connected to the intermediate component. The other end of the traction component extends along the surface of the transmission wheel, and the extended end is connected to the transmission wheel.

[0013] Optionally, the intermediate component is provided with a through hole, and the intermediate component is sleeved on the outer surface of the movable outer cylinder through the through hole.

[0014] Optionally, the inner circumferential surface of the through hole is fixedly connected to the outer surface of the movable outer cylinder.

[0015] Optionally, a limiting structure is provided between the inner circumferential surface of the through hole and the outer surface of the movable outer cylinder, the limiting structure being used to limit the circumferential rotation of the intermediate component relative to the movable outer cylinder.

[0016] Optionally, the surface of the drive wheel is provided with grooves for the traction member to be embedded.

[0017] Optionally, the drive wheel is provided with a hooking part for hooking the other end of the traction member.

[0018] Optionally, the transmission wheel is also provided with a weight reduction part.

[0019] Optionally, the transmission wheel is an annular guide wheel sleeved on the movable outer cylinder.

[0020] Optionally, the transmission wheel is an annular guide wheel.

[0021] Optionally, the drive wheel is a cam.

[0022] The advantages of this invention are: it reduces the working and production costs of cantilever photovoltaic tracking devices and improves the installation efficiency of energy storage booster components.

[0023] First, in the cantilever photovoltaic tracking device proposed in this utility model, when the center of gravity of the cantilever photovoltaic module moves from a high position to a low position, under the action of the photovoltaic module's gravitational potential energy, the transmission wheel winds up the other end of the traction component. With the cooperation of the transmission wheel and the traction component, the deformation of the elastic component increases. The deformation of the elastic component recovers and stores the energy generated by the gravitational potential energy when the photovoltaic module's center of gravity moves downwards. When the photovoltaic module's center of gravity moves from a low position to a high position, the deformation of the elastic component decreases. With the cooperation of the transmission part and the traction component, the mechanical energy stored in the deformation of the elastic component is converted into the elastic force of the elastic component, which acts on the photovoltaic module to assist the photovoltaic module's center of gravity in rotating from a low position to a high position and resist the torque generated by the gravitational potential energy when the photovoltaic module rotates upwards. With the action of the energy storage assist component, only a small amount of power from an external power source is needed to make the cantilever beam have an upward or downward rotation tendency, effectively reducing the power requirements of the power source. A smaller power source can be used to drive the photovoltaic module to rotate, thereby effectively reducing costs.

[0024] Meanwhile, in the cantilevered photovoltaic tracking device proposed in this utility model, one end of the photovoltaic module is connected to the intermediate component, thus the intermediate component bears the weight of the photovoltaic module. Simultaneously, the transmission wheel is also connected to the intermediate component, and the force generated by the deformation of the elastic element in the energy storage assembly to resist the gravitational torque of the photovoltaic module also acts on the intermediate component through the transmission wheel. The forces in both directions are canceled out by the intermediate component before acting on the movable outer cylinder, reducing the pressure on the movable outer cylinder. This avoids the direct action of forces in both directions on the movable outer cylinder, preventing stress concentration and increasing the risk of breakage or damage, thereby increasing the service life of the movable outer cylinder.

[0025] Secondly, by providing grooves on the surface of the transmission wheel, a clear extension trajectory for the traction component is provided on the surface of the transmission wheel, preventing the traction component from detaching from the surface of the transmission wheel. At the same time, when installing the energy storage assist component disclosed in this utility model, the traction component is wound around the groove of the transmission wheel, and the other end of the traction component is hooked onto the hooking part of the transmission wheel to complete the installation. The installation process is simple, easy to operate, and has high installation efficiency.

[0026] Third, the weight-reducing part is set on the transmission wheel proposed in this utility model to reduce the weight of the transmission wheel, reduce the load pressure on the shaft, and save the material used for the transmission wheel, thereby further reducing the working cost and production cost of the cantilever photovoltaic tracking device. Attached Figure Description

[0027] The following accompanying drawings describe in detail the exemplary embodiments disclosed in this application. The same reference numerals denote similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting and exemplary, and the drawings are for illustrative purposes only and are not intended to limit the scope of this application. Other embodiments may similarly fulfill the intent of this application. It should be understood that the drawings are not drawn to scale. Wherein:

[0028] Figure 1 This is a schematic diagram of the cantilever photovoltaic tracking device in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the energy storage and assist component in the embodiments of this application;

[0030] Figure 3 This is a front view of the energy storage and assist component in this embodiment of the application with the first and second protective shells removed.

[0031] Figure 4 for Figure 3 A schematic diagram of the first embodiment of the central drive wheel;

[0032] Figure 5 for Figure 3 A schematic diagram of the second embodiment of the central drive wheel.

[0033] The markings in the diagram are as follows:

[0034] 100. Energy storage booster components;

[0035] 11. Base; 12. First protective shell; 13. Second protective shell;

[0036] 2. Transmission unit;

[0037] 3. Traction components;

[0038] 4. Elastic components;

[0039] 5. Drive wheel; 51. Groove; 52. Hook and mount; 53. Weight reduction part;

[0040] 200. Support components;

[0041] 300. Rotating shaft; 301. Movable outer cylinder; 302. Intermediate component;

[0042] 400. Photovoltaic modules;

[0043] 100. Energy storage and booster components. Detailed implementation method:

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0045] In the description of this application, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates at least two.

[0046] In the description of this application, the terms "connection," "abutment," "installation," "fixation," "contact," "support," and "reception," etc., should be interpreted broadly. For example, "connection" can be a split connection or a one-piece connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can also refer to the internal communication of two components or the interaction between two components. As another example, "abutment" can be a direct abutment or an indirect abutment through an intermediate medium. Furthermore, "reception" does not necessarily mean complete containment of the entire component; this concept also includes the containment of a portion that protrudes externally. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application according to the specific circumstances.

[0047] In the description of this application, if there are terms such as "A is connected to B in a rotatable manner", it means that A and B are directly or indirectly connected, and A is able to rotate relative to B.

[0048] In the description of this application, references to "one embodiment" or "some embodiments" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0049] like Figures 1 to 5As shown, this embodiment discloses a cantilevered photovoltaic tracking device with an energy storage assist component 100, comprising:

[0050] Support component 200,

[0051] The rotating shaft 300 includes a central shaft and a movable outer cylinder 301. The central shaft is connected to the support member 200, and the movable outer cylinder 301 is sleeved on the central shaft. The movable outer cylinder 301 can rotate around the axis of the central shaft.

[0052] Intermediate component 302, which is connected to the movable outer cylinder 301;

[0053] A photovoltaic module 400 is used for photovoltaic power generation, and one end of the photovoltaic module 400 is connected to the intermediate component 302;

[0054] The energy storage and assist component 100 includes an elastic element 4, a traction element 3, and a transmission part 2. One end of the elastic element 4 is connected to the support member 200, and the other end of the elastic element 4 is connected to one end of the traction element 3. The transmission part 2 is connected to the support member 200. The transmission part 2 cooperates with the traction element 3 to adjust the lever arm of the force exerted by the elastic element 4 on the photovoltaic module 400.

[0055] The transmission wheel 5 has its rotation axis coaxial with the movable outer cylinder 301 and connected to the intermediate member 302. The other end of the traction member 3 extends along the surface of the transmission wheel 5 and its extended end is connected to the transmission wheel 5.

[0056] It should be noted that in this embodiment, the support member 200 is used to support the cantilever photovoltaic tracking device. The central axis of the rotating shaft 300 is connected to the support member 200 and can fix the cantilever structure to the installation position. At the same time, one end of the elastic member 4 in the energy storage assist component 100 is connected to the support member 200. The energy storage assist component 100 can be directly connected to the support member 200, or a base 11 can be provided in the energy storage assist component 100 and connected to the support member 200 through the base 11. As long as the function of the support member 200 is satisfied, changes in the shape and structure of the support member 200 do not constitute a limitation on this embodiment.

[0057] It should be noted that, in this embodiment, the rotating shaft 300 is used to provide a rotation shaft 300 for the photovoltaic module 400, enabling the photovoltaic module 400 to rotate stably around the shaft. When an external power source is required to drive the photovoltaic module 400 to move, a drive motor can be used as the power source, with the output end of the power source connected to the central shaft, thereby driving the photovoltaic module 400 connected to the movable outer cylinder 301 to rotate around the central shaft.

[0058] It should be noted that, in this embodiment, in order to increase the service life of the energy storage assist component 100, such as... Figure 2 and Figure 3 As shown, the housing also includes a first protective shell 12 and a second protective shell 13. The first protective shell 12 is sleeved on the elastic member 4 and connected to the base 11. The second protective shell 13 is covered on the base 11 and is used to seal the transmission part 2. The first protective shell 12 and the second protective shell 13 mechanically seal the elastic member 4 and the transmission part 2, isolate them from the external environment, and increase their service life. At the same time, the second protective shell 13 can also prevent the traction member 3 or the elastic member 4 from popping out, thereby avoiding damage to the outside world.

[0059] It should be noted that the energy storage assist component 100 in this embodiment is used in a cantilevered photovoltaic tracking device. When the center of gravity of the cantilevered photovoltaic module 400 moves from a high position to a low position (i.e., when the photovoltaic module 400 rotates downward around the axis 300), under the action of the gravitational potential energy of the photovoltaic module 400, the transmission wheel 5 winds up the other end of the traction member 3. With the cooperation of the transmission part 2 and the traction member 3, the deformation of the elastic member 4 increases. The deformation of the elastic member 4 recovers and stores the energy due to the downward movement of the center of gravity of the photovoltaic module 400. The energy generated by gravitational potential energy is used to reduce the deformation of the elastic element 4 when the center of gravity of the photovoltaic module 400 moves from a low position to a high position (i.e., when the photovoltaic module 400 rotates upward around the axis 300). With the cooperation of the transmission part 2 and the traction part 3, the mechanical energy stored in the deformation of the elastic element 4 is converted into the elastic force of the elastic element 4 and applied to the photovoltaic module 400 to assist the center of gravity of the photovoltaic module 400 in rotating from a low position to a high position and to resist the torque generated by gravitational potential energy when the photovoltaic module 400 rotates upward.

[0060] Therefore, under the action of the energy storage assist component 100, the torque generated by the gravitational potential energy of the cantilever beam is overcome by the first elastic element 4. Thus, only a small amount of power from an external power source is needed to make the cantilever beam have an upward or downward rotation tendency, thereby effectively reducing the power requirements of the power source. A smaller power source can be used to drive the photovoltaic module 400 to rotate, effectively reducing costs.

[0061] It should be noted that in this embodiment, one end of the photovoltaic module 400 is connected to the intermediate component 302, thus the intermediate component 302 bears the gravitational potential energy of the photovoltaic module 400. Simultaneously, the transmission wheel 5 is also connected to the intermediate component 302. The force generated by the deformation of the elastic element 4 in the energy storage assembly to resist the gravitational torque of the photovoltaic module 400 also acts on the intermediate component 302 through the transmission wheel 5. The forces in both directions are canceled out by the intermediate component 302 and then act on the movable outer cylinder 301, reducing the pressure on the movable outer cylinder 301. This avoids the direct action of forces in both directions on the movable outer cylinder 301, preventing stress concentration and increasing the risk of breakage or damage, thereby increasing the service life of the movable outer cylinder 301.

[0062] Furthermore, in this embodiment, while fulfilling the function of the intermediate component 302, the intermediate component 302 can be either a flange connected to the movable outer cylinder 301 or a cylindrical component, such as... Figure 1 As shown, the intermediate component 302 is provided with a through hole, and the intermediate component 302 is sleeved on the movable outer cylinder 301 through the through hole. The photovoltaic module 400 is connected to the outer peripheral surface of the intermediate component 302.

[0063] It should be noted that, in this embodiment, the transmission wheel 5 can be integrally formed with the intermediate component 302, or it can be as follows: Figure 1 , Figure 4 and Figure 5 The two independent components are shown.

[0064] When the transmission wheel 5 and the intermediate part 302 are two separate components, the transmission wheel 5 can be either fixedly connected to the intermediate part 302 or detachably connected to the intermediate part 302.

[0065] Furthermore, in this embodiment, taking the intermediate component 302 as a cylindrical component with a through hole as an example, the detachable connection between the intermediate component 302 and the transmission wheel 5 can be achieved in ways including but not limited to the following:

[0066] First embodiment, such as Figure 5 As shown, the transmission wheel 5 is an annular guide wheel, which is sleeved on the movable outer cylinder 301. Along the axis of the through hole, the annular guide wheel and the intermediate part 302 are coaxially arranged. A connecting hole is provided on the annular guide wheel along the axis of the through hole. A bolt passes through the connecting hole to connect the annular guide wheel to one end of the intermediate part 302.

[0067] Second embodiment, such as Figure 4As shown, the transmission wheel 5 is a fan-shaped cam. The inner arc surface of the fan-shaped cam is connected to the outer surface of the intermediate part 302. The fan-shaped cam has a connecting hole arranged in a direction perpendicular to the axis of the through hole. A bolt passes through the connecting hole to connect the fan-shaped cam to the outer surface of the intermediate part 302; or, one end of the fan-shaped cam is connected to one end of the intermediate part 302. The fan-shaped cam has a connecting hole arranged in a direction perpendicular to the axis of the through hole. A bolt passes through the connecting hole to connect the fan-shaped cam to one end of the intermediate part 302.

[0068] In the third embodiment, the transmission wheel 5 is a disc cam. The disc cam has a through hole along its rotation axis that corresponds to the through hole. The disc cam is sleeved on the movable outer cylinder 301 through the through hole. The disc cam has a connecting hole along the direction of the axis of the through hole. The bolt passes through the connecting hole to connect the disc cam to one end of the intermediate part 302.

[0069] It should be noted that, in this embodiment, the other end of the traction member 3 extends along the surface of the transmission wheel 5, and the extended end is connected to the transmission wheel 5. In order to provide a clear extension trajectory for the traction member 3 on the surface of the transmission wheel 5, the surface of the transmission wheel 5 is provided with a groove 51 for the traction member 3 to be embedded. When the traction member 3 is engaged with the transmission wheel 5, the traction member 3 extends along the direction of the groove 51 to prevent the traction member 3 from detaching from the surface of the transmission wheel 5.

[0070] During the assembly of the cantilevered photovoltaic tracking device, to facilitate the connection of the other end of the traction component 3 to the transmission wheel 5, a mounting part 52 is provided on the transmission wheel 5. The mounting part 52 can be as follows: Figure 4 The mounting hole shown can also be as follows: Figure 5 The hook-shaped attachment shown can also be a welding point or a screw hole. Depending on the specific structure of the other end of the traction member 3, the attachment part 52 can have different shapes or structures. As long as the function of the attachment part 52 is satisfied, changes in the shape or structure of the attachment part 52 do not constitute a limitation on this embodiment.

[0071] It should be noted that, in this embodiment, in order to reduce the load pressure on the rotating shaft 300 without affecting the function of the transmission wheel 5, it can be done as follows: Figure 5 As shown, a weight-reducing part 53 is provided on the transmission wheel 5. The weight-reducing part 53 is a through hole on the transmission wheel 5 or a recessed area on the transmission wheel 5.

[0072] The advantages of this embodiment are: reducing the operating and production costs of the cantilever photovoltaic tracking device and improving the installation efficiency of the energy storage booster module 100.

[0073] First, in the cantilevered photovoltaic tracking device proposed in this embodiment, when the center of gravity of the cantilevered photovoltaic module 400 moves from a high position to a low position, under the action of the gravitational torque of the photovoltaic module 400, the transmission wheel 5 winds up the other end of the traction member 3. With the cooperation of the transmission wheel 5 and the traction member 3, the deformation of the elastic member 4 increases. The deformation of the elastic member 4 recovers and stores the energy generated by the gravitational potential energy when the center of gravity of the photovoltaic module 400 moves downward. When the center of gravity of the photovoltaic module 400 moves from a low position to a high position, the deformation of the elastic member 4 decreases. With the cooperation of the transmission part 2 and the traction member 3, the mechanical energy stored by the deformation of the elastic member 4 is converted into the elastic force of the elastic member 4 and acts on the photovoltaic module 400 to assist the center of gravity of the photovoltaic module 400 in rotating from a low position to a high position and resist the torque generated by gravity when the photovoltaic module 400 rotates upward. With the help of the energy storage booster component 100, only a small amount of power from an external power source is needed to make the cantilever beam tend to rotate upward or downward, which effectively reduces the power requirements of the power source. A smaller power source can be used to drive the photovoltaic module 400 to rotate, thereby effectively reducing costs.

[0074] Meanwhile, in the cantilevered photovoltaic tracking device proposed in this embodiment, one end of the photovoltaic module 400 is connected to the intermediate component 302. Therefore, the intermediate component 302 bears the gravitational potential energy of the photovoltaic module 400. At the same time, the transmission wheel 5 is also connected to the intermediate component 302. The force generated by the deformation of the elastic element 4 in the energy storage component to resist the gravitational torque of the photovoltaic module 400 also acts on the intermediate component 302 through the transmission wheel 5. The forces in the two directions are canceled out by the intermediate component 302 and then act on the movable outer cylinder 301, reducing the pressure on the movable outer cylinder 301. This avoids the direct action of forces in two directions on the movable outer cylinder 301, which would cause stress concentration in the movable outer cylinder 301, increasing the risk of breakage and damage to the movable outer cylinder 301, thereby increasing the service life of the movable outer cylinder 301.

[0075] Secondly, by providing a groove 51 on the surface of the transmission wheel 5, a clear extension trajectory for the traction member 3 is provided on the surface of the transmission wheel 5, preventing the traction member 3 from detaching from the surface of the transmission wheel 5. At the same time, when installing the energy storage assist component 100 disclosed in this embodiment, the traction member 3 is wound around the groove 51 of the transmission wheel 5, and the other end of the traction member 3 is hooked onto the hooking part 52 of the transmission wheel 5, and the installation can be completed. The installation process is simple, easy to operate, and has high installation efficiency.

[0076] Third, the weight reduction part 53 is provided on the transmission wheel 5 proposed in this embodiment to reduce the weight of the transmission wheel 5, reduce the load pressure on the rotating shaft 300, and save the material used for the transmission wheel 5, thereby further reducing the working cost and production cost of the cantilever photovoltaic tracking device.

Claims

1. A cantilevered photovoltaic tracking device with an energy storage assist component, characterized in that, include: Support components A rotating shaft includes a central shaft and a movable outer cylinder. The central shaft is connected to the support member, and the movable outer cylinder is sleeved on the central shaft. The movable outer cylinder can rotate around the axis of the central shaft. Intermediate component, the intermediate component being connected to the movable outer cylinder; A photovoltaic module for generating photovoltaic power, one end of which is connected to the intermediate component; An energy storage and assist component includes an elastic element, a traction element, and a transmission part. One end of the elastic element is connected to the support element, and the other end of the elastic element is connected to one end of the traction element. The transmission part is connected to the support element, and the transmission part cooperates with the traction element to adjust the lever arm of the force exerted by the elastic element on the photovoltaic module. The transmission wheel has its rotation axis coaxial with the movable outer cylinder and connected to the intermediate component. The other end of the traction component extends along the surface of the transmission wheel, and the extended end is connected to the transmission wheel.

2. The cantilevered photovoltaic tracking device as described in claim 1, characterized in that, The intermediate component has a through hole, and the intermediate component is sleeved on the outer surface of the movable outer cylinder through the through hole.

3. The cantilevered photovoltaic tracking device as described in claim 2, characterized in that, The inner circumferential surface of the through hole is fixedly connected to the outer surface of the movable outer cylinder.

4. The cantilevered photovoltaic tracking device as described in claim 2, characterized in that, A limiting structure is provided between the inner circumferential surface of the through hole and the outer surface of the movable outer cylinder, the limiting structure being used to limit the circumferential rotation of the intermediate component relative to the movable outer cylinder.

5. The cantilevered photovoltaic tracking device as described in claim 1, characterized in that, The surface of the drive wheel is provided with grooves for the traction component to be embedded.

6. The cantilevered photovoltaic tracking device as described in claim 1, characterized in that, The drive wheel is provided with a hook-on part for hooking the other end of the traction component.

7. The cantilevered photovoltaic tracking device as described in claim 1, characterized in that, The drive wheel is also equipped with a weight reduction section.

8. The cantilevered photovoltaic tracking device as described in any one of claims 1-7, characterized in that, The transmission wheel is an annular guide wheel.

9. The cantilevered photovoltaic tracking device as described in any one of claims 1-7, characterized in that, The transmission wheel is a cam.

10. The cantilevered photovoltaic tracking device as described in claim 9, characterized in that, The transmission part is ring-shaped, or the transmission part is fan-shaped.

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