Transmission device applied to photovoltaic cleaning robot

Abstract

The transmission device comprises a box body, the box body comprises a first main body part and a second main body part extending outwards from the outer wall of the first main body part, a first transmission cavity is formed in the first main body part, and a second transmission cavity is formed in the second main body part; the first transmission shaft is connected into the first transmission cavity, and the two ends of the first transmission shaft extend out of the first transmission cavity; the second transmission shaft is connected into the second transmission cavity, and one end of the second transmission shaft extends out of the second transmission cavity; wherein the first transmission shaft and the second transmission shaft can rotate relative to the box body, and the first transmission shaft and the second transmission shaft can rotate relatively / synchronously. The first transmission shaft and the second transmission shaft are installed in the corresponding transmission cavities of the box body, so that the whole transmission device is modularized, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic cleaning robots, and particularly to a transmission device applied to a photovoltaic cleaning robot. Background Technique

[0002] With the rapid development of new energy technologies, photovoltaic power generation has been widely applied in recent years. One of the core components of photovoltaic power generation is the photovoltaic panel. The surface of the photovoltaic panel needs to be regularly cleaned during long-term exposure to the outside world, and the photovoltaic cleaning robot belongs to the mechanical equipment that can clean the surface of the photovoltaic panel. Since photovoltaic modules are often inclined, the structure of the photovoltaic cleaning robot mainly includes an upper walking assembly, a lower walking assembly, and a brush roller assembly located between the upper and lower walking assemblies. The upper and lower walking assemblies are located on both sides of the photovoltaic panel. The upper walking assembly and the lower walking assembly are independent mechanisms and are driven by a transmission device. The structure of the upper and lower walking assemblies includes walking wheels and driven wheels. The walking wheels are generally driving wheels driven by a driving source to roll on the surface of the photovoltaic panel, and the driven wheels are in rolling contact with the side wall of the photovoltaic panel. The included angle between the transmission shafts of the driving wheels and the driven wheels is determined according to the angle between the surface and the side of the photovoltaic panel.

[0003] Chinese Patent Application Publication No. CN114123949A discloses a "cooperating structure between a photovoltaic cleaning robot and a flat single-axis tracking bracket". Both the upper and lower walking assemblies include a plurality of driving wheels arranged at intervals and a plurality of driven wheels. The driving wheels and the driven wheels are independent components and are respectively connected to the frame through their respective transmission shafts, resulting in relatively poor integrity of the structure of the upper and lower walking assemblies and significantly reducing the disassembly and assembly efficiency. Utility Model Content

[0004] In order to modularize the transmission part of the upper and lower walking assemblies and improve the integrity of the structure, the present application provides a transmission device applied to a photovoltaic cleaning robot.

[0005] The transmission device applied to a photovoltaic cleaning robot provided by the present application adopts the following technical solution:

[0006] A transmission device applied to a photovoltaic cleaning robot, comprising:

[0007] A box body, the box body includes a first main body part and a second main body part extending outward from the outer wall of the first main body part. A first transmission cavity is formed in the first main body part, and a second transmission cavity is formed in the second main body part;

[0008] A first transmission shaft, connected in the first transmission cavity and both ends of the first transmission shaft extend out of the first transmission cavity; and

[0009] The second transmission shaft is connected within the second transmission cavity and one end of the second transmission shaft extends out from within the second transmission cavity;

[0010] Wherein, both the first transmission shaft and the second transmission shaft can rotate relative to the housing, and the first transmission shaft and the second transmission shaft can rotate relative to / synchronously with each other.

[0011] By adopting the above technical solution, the first transmission shaft and the second transmission shaft are integrally installed within the housing, and the first transmission shaft and the second transmission shaft can correspondingly be connected to the walking wheels and the driven wheels. Furthermore, the entire transmission device can be used as an integral module for easy overall disassembly and assembly. At the same time, due to the setting of the independent housing, during the process of cleaning the photovoltaic panels, the first transmission shaft and the second transmission shaft can also be protected, thereby extending their service life.

[0012] Preferably, it further includes a transmission component, and the transmission component connects the first transmission shaft and the second transmission shaft to force the first transmission shaft and the second transmission shaft to rotate synchronously.

[0013] By adopting the above technical solution, the synchronous rotation of the first transmission shaft and the second transmission shaft can achieve the synchronous rotation of the externally connected walking wheels and the driven wheels. Compared with the existing structure where the driven wheels rotate passively, the working stability is higher. At the same time, the external load force received by the entire transmission device can be effectively distributed, further extending the service life of the entire transmission device.

[0014] Preferably, the transmission component includes:

[0015] A first bevel gear, which is received within the first transmission cavity and connected to the first transmission shaft; and

[0016] A second bevel gear, which meshes with the first bevel gear and is connected to the second transmission shaft.

[0017] By adopting the above technical solution, bevel gear transmission first achieves the simplest transmission direction-changing effect, and has high transmission efficiency, strong load-bearing capacity, and makes the internal structure of the housing more compact, effectively reducing the overall volume.

[0018] Preferably, both the first bevel gear and the second bevel gear are straight bevel gears.

[0019] By adopting the above technical solution, straight bevel gears are superior to other tooth forms in terms of transmission efficiency, transmission accuracy, and working noise, effectively ensuring the synchronism between the externally connected walking wheels and the driven wheels.

[0020] Preferably, both the first bevel gear and the second bevel gear include a plurality of teeth circumferentially distributed, and a tooth groove is formed between adjacent teeth; wherein, the tooth groove has a tooth groove bottom surface, and the tooth groove bottom surface is an arc surface.

[0021] By adopting the above technical solution, the form of the bottom surface of the tooth groove provided on the arc surface makes the depth of the entire tooth groove deeper than that of the existing inclined surface type tooth groove bottom surface under the premise of the same overall height, so that the height of the tooth matching the tooth groove is also relatively high, which can improve the impact resistance strength and torsional resistance strength of the entire transmission component, and further improve the service life of the entire transmission device.

[0022] Preferably, a key connection is provided between the first bevel gear and the first transmission shaft, and a key connection is provided between the second bevel gear and the second transmission shaft.

[0023] By adopting the above technical solution, the form structure of the key connection is simple and does not occupy the external environmental space, enabling the layout of each component to be more compact.

[0024] Preferably, the first transmission shaft can rotate relative to the second transmission shaft.

[0025] By adopting the above technical solution, the relative rotation of the first transmission shaft and the second transmission shaft enables them to work independently, which can be selected according to the usage conditions of the cleaning robot, reducing the components of the entire transmission device, lowering the manufacturing cost, and facilitating disassembly and assembly at the same time.

[0026] Preferably, it further includes:

[0027] At least one first bearing, which is installed in the first transmission cavity and connected to the first transmission shaft;

[0028] At least one first oil seal, which is installed on both sides of the first transmission cavity and connected to the first transmission shaft;

[0029] At least one second bearing, which is installed in the second transmission cavity and connected to the second transmission shaft; and

[0030] A second oil seal, which is installed on one side of the second transmission cavity and connected to the second transmission shaft.

[0031] By adopting the above technical solution, during the rotation of the first transmission shaft and the second transmission shaft, the setting of the first bearing and the second bearing reduces the frictional wear between the inner wall of the box body, and at the same time improves the rotational flexibility. The setting of the first oil seal and the second oil seal can block the leakage of the lubricant in the box body, making the working stability of the transmission device better.

[0032] Preferably, it further includes a box cover connected to one side of the first main body part. The box cover includes a first mounting part and a second mounting part connected to each other. The first mounting part includes a limiting ring that abuts against the end face of the first main body part and a clamping ring that extends outward from one end of the limiting ring. The clamping ring extends into the first transmission cavity, and the clamping ring has a first limiting groove for installing the first bearing; the second mounting part has a second limiting groove for installing the first oil seal.

[0033] By adopting the above technical solution, the setting of the box cover is first convenient for observing the states of the components inside the box after disassembly; secondly, it is convenient for the disassembly and assembly between the first transmission shaft and the box body.

[0034] Preferably, the outer walls of the first main body part and / or the second main body part have a plurality of circumferentially arranged reinforcing ribs.

[0035] By adopting the above technical solution, the reinforcing ribs can improve the strength of the entire box body, are suitable for the situation where the cleaning working conditions are relatively complex, and the strength of the box body can effectively protect the internal components.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. By installing the first transmission shaft and the second transmission shaft in the corresponding transmission cavities of the box body, the entire transmission device is modularized, improving the disassembly and assembly efficiency; and the first transmission shaft and the second transmission shaft can rotate relatively or synchronously, and can be flexibly adjusted according to the use conditions of the cleaning equipment.

[0038] 2. By adopting the bevel gear transmission form, the transmission efficiency is improved, and the arrangement of the components inside the box body is more compact, and the overall volume of the box body can be effectively reduced; at the same time, the bottom surface of the tooth groove is set as an arc surface to deepen the depth of the tooth groove, thereby enhancing the impact resistance and torsion resistance of the transmission components.

[0039] 3. By installing the first and second bearings and the first and second oil seals inside the box body, while limiting the first transmission shaft and the second transmission shaft, the stability during the transmission process is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic structural diagram of a transmission device applied to a photovoltaic cleaning robot in Embodiment 1;

[0041] Figure 2 It is a cross-sectional view of a transmission device applied to a photovoltaic cleaning robot in Embodiment 1;

[0042] Figure 3 It is a schematic structural diagram of a transmission component in Embodiment 1;

[0043] Figure 4 It is a cross-sectional view of a second helical gear in Embodiment 1;

[0044] Figure 5 It is a cross-sectional view of a transmission device applied to a photovoltaic cleaning robot in the second embodiment.

[0045] Explanation of reference numerals: 1. Box body; 11. First main body part; 111. First transmission cavity; 12. Second main body part; 121. Second transmission cavity; 13. Reinforcing rib; 14. Box cover; 141. Limiting ring; 142. Snap ring; 143. First limiting groove; 144. Second installation part; 145. Second limiting groove; 2. First transmission shaft; 3. Second transmission shaft; 4. First helical gear; 5. Second helical gear; 51. Tooth; 52. Tooth groove; 541. Bottom surface of tooth groove. 6. First bearing; 7. First oil seal; 8. Second bearing; 9. Second oil seal; 10. Spacer ring. Detailed implementation manners

[0046] The present application will be further described in detail below with reference to the accompanying drawings.

[0047] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Embodiment 1

[0049] Figure 1 With Figure 2 There is shown a transmission device applied to a photovoltaic cleaning robot, including a box body 1, a first transmission shaft 2 and a second transmission shaft 3. The box body 1 includes a first main body part 11 and a second main body part 12 of an integral structure. The second main body part 12 extends outward from the outer peripheral wall of the first main body part 11. The outer shapes of the first main body part 11 and the second main body part 12 are generally cylindrical. A first transmission cavity 111 with both sides open is formed in the first main body part 11, and a second transmission cavity 121 with one side open is formed in the second main body part 12. In this embodiment, the first transmission cavity 111 is communicated with the second transmission cavity 121.

[0050] The first transmission shaft 2 is installed in the first transmission cavity 111 and both ends extend out from the openings on both sides of the first transmission cavity 111; the second transmission shaft 3 is installed in the second transmission cavity 121 and one end of it extends out from the opening on one side of the second transmission cavity 121. In this embodiment, the first transmission shaft 2 and the second transmission shaft 3 are arranged vertically, that is, the two axes are perpendicular to each other.

[0051] This transmission device further includes a transmission component. In this embodiment, the transmission component includes a first helical gear 4 and a second helical gear 5 that mesh with each other. The first helical gear 4 is key-connected to the first transmission shaft 2, the second helical gear 5 is key-connected to the second transmission shaft 3, and at the same time, both the first helical gear 4 and the second helical gear 5 are housed in the housing 1.

[0052] To further limit the volume of the housing 1, the outer dimension of the second main body portion 12 is set according to the shaft diameter of the second transmission shaft 3. In this transmission device, two first bearings 6 are also installed in the first transmission cavity 111. The two first bearings 6 are respectively placed near the openings on both sides of the first transmission cavity 111 and are connected to the first transmission shaft 2. A first oil seal 7 is also provided at the opening on one side of the first transmission cavity 111, and the first oil seal 7 is arranged adjacent to the first bearing 6.

[0053] For easy disassembly and assembly, a cover 14 is also connected to the opening on one side of the housing 1. The cover 14 includes an integrally structured first mounting portion and a second mounting portion 144. The first mounting portion includes a limiting ring 141 connected to each other and a snap ring 142 extending outward from one end surface of the limiting ring 141. The snap ring 142 is clamped in the opening on one side of the first transmission cavity 111. The diameter of the limiting ring 141 is larger than that of the snap ring 142, so that a step surface is formed at the connection between the two. The end surface of the limiting ring 141 abuts against the end surface on one side of the first main body portion 11, and the second mounting portion 144 is placed on the side away from the first transmission cavity 111. The snap ring 142 has a first limiting groove 143 for installing another first bearing 6, and the second mounting portion 144 has a second limiting groove 145 for installing another first oil seal 7.

[0054] A second bearing 8 and a second oil seal 9 at the opening of the second transmission cavity 121 are installed in the second transmission cavity 121. Both the second bearing 8 and the second oil seal 9 are connected to the second transmission shaft 3. In this embodiment, two second bearings 8 are provided and are arranged adjacent to each other, and a spacer ring 10 is provided between the second bearing 8 and the second oil seal 9. The number of the second bearings 8 is set to ensure the anti-impact strength of the second transmission shaft 3 in the second transmission cavity 121. At the same time, a plurality of reinforcing ribs 13 are provided on the outer peripheral wall of the first main body portion 11 and / or the second main body portion 12 to improve the strength of the housing 1.

[0055] Refer to jointly Figure 3 And Figure 4, both the first helical gear 4 and the second helical gear 5 include a plurality of teeth 51 evenly distributed in the circumferential direction. A tooth groove 52 is formed between two adjacent teeth 51. In this embodiment, the tooth groove 52 has a tooth groove bottom surface 521, and the tooth groove bottom surface 521 is an arc surface, so that the whole tooth groove 52 has a certain depth.

[0056] During the installation and use process of this transmission device, it is disassembled and assembled as a whole module. The externally connected walking wheel is connected to the first transmission shaft 2, and the driven wheel is connected to the second transmission shaft 3. One end of the first transmission shaft 2 is driven by a driving source to rotate. While the first transmission shaft 2 rotates, the second transmission shaft 3 is driven to rotate by the transmission component, thereby realizing the synchronous rotation of the walking wheel and the driven wheel. During the working process of the cleaning device, it is inevitable that the walking wheel or the driven wheel collides with large and small particle impurities placed on the surface or side of the photovoltaic panel. In this embodiment, due to the compact arrangement of the components in the box body 1 and the specially designed helical gear 51 structure, it can resist the impact during the collision or vibration process and ensure the stable operation of the transmission device. Embodiment Two

[0057] Refer to Figure 5 , a transmission device applied to a photovoltaic cleaning robot, which is different from Embodiment One in that the transmission component is cancelled, so that the first transmission shaft 2 and the second transmission shaft 3 can rotate relatively, and the two are independent non-linked components. It can be selected for use when the manufacturing cost budget is tight or the cleaning working condition is not very complicated. The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A transmission device applied to a photovoltaic cleaning robot, characterized in that, Comprising: A box body (1), the box body (1) includes a first main body portion (11) and a second main body portion (12) extending outward from the outer wall of the first main body portion (11). A first transmission cavity (111) is formed inside the first main body portion (11), and a second transmission cavity (121) is formed inside the second main body portion (12); A first transmission shaft (2), connected inside the first transmission cavity (111) and both ends of the first transmission shaft (2) extend out from inside the first transmission cavity (111); And A second transmission shaft (3), connected inside the second transmission cavity (121) and one end of the second transmission shaft (3) extends out from inside the second transmission cavity (121); Wherein, the first transmission shaft (2) and the second transmission shaft (3) can both rotate relative to the box body (1), and the first transmission shaft (2) and the second transmission shaft (3) can rotate relative to / synchronously with each other.

2. The transmission device applied to a photovoltaic cleaning robot according to claim 1, wherein, It further includes a transmission assembly, the transmission assembly connects the first transmission shaft (2) and the second transmission shaft (3) to force the first transmission shaft (2) and the second transmission shaft (3) to rotate synchronously.

3. The transmission device applied to a photovoltaic cleaning robot according to claim 2, characterized in that, The transmission assembly includes: A first bevel gear (4), the first bevel gear (4) is received inside the first transmission cavity (111) and is connected to the first transmission shaft (2); and A second bevel gear (5), the second bevel gear (5) meshes with the first bevel gear (4), and the second bevel gear (5) is connected to the second transmission shaft (3).

4. The transmission device applied to a photovoltaic cleaning robot according to claim 3, characterized in that, Both the first bevel gear (4) and the second bevel gear (5) are straight bevel gears.

5. The drive device for a photovoltaic cleaning robot according to claim 3, characterized in that Both the first bevel gear (4) and the second bevel gear (5) include a plurality of teeth (51) circumferentially distributed, and a tooth groove (52) is formed between adjacent two teeth (51); wherein, the tooth groove (52) has a tooth groove bottom surface (521), and the tooth groove bottom surface (521) is an arc surface.

6. The transmission device for a photovoltaic cleaning robot according to claim 3, characterized in that, There is a key connection between the first bevel gear (4) and the first transmission shaft (2), and there is a key connection between the second bevel gear (5) and the second transmission shaft (3).

7. The drive device for a photovoltaic cleaning robot according to claim 1, wherein, The first transmission shaft (2) can rotate relative to the second transmission shaft (3).

8. A transmission device applied to a photovoltaic cleaning robot according to claim 1 or 7, characterized in that, It further includes: At least one first bearing (6), the first bearing (6) is installed inside the first transmission cavity (111) and is connected to the first transmission shaft (2); At least one first oil seal (7), the first oil seal (7) is installed on both sides of the first transmission cavity (111) and is connected to the first transmission shaft (2); At least one second bearing (8), the second bearing (8) is installed inside the second transmission cavity (121) and is connected to the second transmission shaft (3); And A second oil seal (9), the second oil seal (9) is installed on one side of the second transmission cavity (121) and is connected to the second transmission shaft (3).

9. The drive device for a photovoltaic cleaning robot according to claim 8, characterized in that, It further includes a box cover (14) connected to one side of the first main body portion (11). The box cover (14) includes a first mounting portion and a second mounting portion (144) connected to each other. The first mounting portion includes a limit ring (141) that abuts against the end face of the first main body portion (11) and a snap ring (142) extending outward from one end of the limit ring (141). The snap ring (142) extends into the first transmission cavity (111), and the snap ring (142) has a first limit groove (143) for installing the first bearing (6); the second mounting portion (144) has a second limit groove (145) for installing the first oil seal (7).

10. The drive device for a photovoltaic cleaning robot according to claim 1, characterized in that, The outer wall of the first main body portion (11) and / or the second main body portion (12) has a plurality of circumferentially arranged reinforcing ribs (13).

Images