Large-speed-ratio chain transmission photovoltaic panel cleaning robot

Abstract

A large-speed-ratio chain transmission photovoltaic panel cleaning robot belongs to the technical field of photovoltaic, walks on a photovoltaic module for cleaning and comprises a case, walking wheels and a brush roller are arranged on the lower portion of the case, the walking wheels are located on the front side and the rear side of the lower portion of the case, and the brush roller is located in the center of the lower portion of the case. A duplex chain wheel driven by a driving motor is arranged in the machine box and comprises a large duplex chain wheel and a small duplex chain wheel which rotate coaxially, the large duplex chain wheel drives a small brush roller chain wheel through a first chain, the small brush roller chain wheel drives a brush roller, and the small duplex chain wheel drives a large walking wheel chain wheel through a second chain. The walking wheel large chain wheel drives walking wheels on the lower portion of the machine box. The sweeping robot is novel in conception and ingenious in design, the speed ratio of the walking wheels to the brush roller can be increased, the sweeping capacity of the brush roller when the sweeping robot moves is effectively improved, and the photovoltaic panel is swept more thoroughly.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic technology, and in particular relates to the maintenance of photovoltaic modules. Specifically, it is an intelligent cleaning device with a high-speed chain drive structure for cleaning photovoltaic modules. Background Technology

[0002] Modern photovoltaic power plants typically consist of a large number of photovoltaic modules forming a photovoltaic array, which requires a significant area. Furthermore, since large-scale photovoltaic power plants require long hours of sunshine, they are often located in relatively arid regions. These regions are dry and receive little rain, and the photovoltaic modules need to be kept clean, thus requiring cleaning and maintenance.

[0003] Existing large-scale photovoltaic power plants use mechanical cleaning methods to clean photovoltaic modules. Mechanical cleaning utilizes high-speed rotating brush rollers mounted on a cleaning robot to clean the photovoltaic panels. To facilitate the robot's movement, wheels are also provided. Due to the cleaning requirements of the photovoltaic panels, the rotational speeds of the brush rollers and wheels have a relatively large speed ratio. However, to save weight and space for the cleaning robot, it is equipped with only one power system. Therefore, existing cleaning robots generally use a composite transmission method of chain and gears. This transmission method has a complex structure, requires high manufacturing precision, and is inconvenient for daily maintenance. Another method is a full chain transmission method. Due to space limitations inside the machine head, a single chain is used, resulting in a smaller speed ratio. This prevents the brush rollers from achieving thorough cleaning, leading to poor cleaning results. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention proposes a high-speed-ratio chain-driven photovoltaic panel cleaning robot. This robot achieves a high-speed-ratio transmission between the brush roller and the walking wheel via chain drive, thereby enabling thorough cleaning of the photovoltaic panels.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] A high-speed-ratio chain-driven photovoltaic panel cleaning robot includes a chassis. The lower part of the chassis is equipped with walking wheels and a brush roller. The walking wheels are located on the front and rear sides of the lower part of the chassis, and the brush roller is located in the center of the lower part of the chassis. In this invention, the chassis is equipped with a double-linked sprocket driven by a drive motor, including a double-linked large sprocket and a double-linked small sprocket rotating coaxially. The double-linked large sprocket drives the small sprocket of the brush roller via a first chain, and the small sprocket of the brush roller drives the brush roller. The double-linked small sprocket drives the large sprocket of the walking wheels via a second chain. There are two sets of large sprockets for the walking wheels, which respectively drive the two sets of walking wheels on the front and rear sides of the lower part of the chassis.

[0007] In this invention, the small sprocket of the brush roller rotates in the opposite direction to the large sprocket of the walking wheel.

[0008] Furthermore, the front and rear sides of the small sprocket of the brush roller are respectively provided with reversing small sprockets, and the first chain passes sequentially around the double-linked large sprocket, below the front reversing small sprocket, above the small sprocket of the brush roller, below the rear reversing small sprocket, and the double-linked large sprocket.

[0009] In this invention, a tensioning sprocket device is provided inside the chassis to tension the second chain.

[0010] Furthermore, the tensioning sprocket device includes a crank arm and a tensioning wheel. The middle part of the crank arm is set in the machine housing through a pin shaft. The crank arm can rotate freely along the pin shaft. One end of the crank arm is provided with a tensioning wheel that abuts against the second chain. The other end of the crank arm is connected to an elastic connecting device.

[0011] Furthermore, the elastic connection device includes a spring seat, which is fixed inside the housing. A compression spring and a screw are installed inside the spring seat. One end of the screw passes through the spring seat and is hinged to the other end of the crank arm. The other end of the screw is fitted with a screwed adjusting nut. The compression spring is fitted on the screw and is positioned between the spring seat and the adjusting nut. The elastic potential energy of the compression spring is adjusted by adjusting the adjusting nut, thereby adjusting the tension of the second chain.

[0012] Compared with the prior art, this application has the following advantages:

[0013] (1) This application uses two sets of chain drives, with coaxial double sprockets driving the brush roller and the walking wheel respectively through sprockets of different diameters, to achieve high speed ratio rotation of the brush roller and the walking wheel, effectively ensuring that the photovoltaic panel is thoroughly cleaned while walking.

[0014] (2) By setting a brush roller that rotates in the opposite direction to the walking wheel, this application enables the brush roller surface to achieve a higher relative speed to the photovoltaic panel, which effectively improves the cleaning efficiency.

[0015] (3) This application uses a reversing sprocket to drive the reversing of the brush roller sprocket, making the transmission system driven by the first chain compact and effectively reducing the failure rate;

[0016] (4) This application provides a certain tension elasticity to the second chain by setting a tension sprocket device on the second chain, thereby providing a certain lifting and lowering buffer for the walking wheel, so that the walking wheel can adapt to different heights when driving the entire cleaning robot to move, and also provides a certain buffering effect.

[0017] Therefore, this utility model has a novel concept and ingenious design, which can improve the speed ratio between the walking wheel and the brush roller, effectively improve the cleaning ability of the brush roller when the cleaning robot is moving, and make it clean the photovoltaic panels more thoroughly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the AA section structure.

[0020] In the diagram: 1. Chassis; 2. Drive motor; 3. Double large sprocket; 4. Double small sprocket; 5. Small sprocket for brush roller; 6. Small sprocket for reversing direction; 7. First chain; 8. Second chain; 9. Large sprocket for traveling wheel; 10. Crank arm; 11. Tensioner wheel; 12. Spring seat; 13. Screw; 14. Compression spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0022] A high-speed-ratio chain-driven photovoltaic panel cleaning robot includes a chassis 1. The lower part of the chassis 1 is equipped with wheels and a brush roller. The wheels are located on the front and rear sides of the lower part of the chassis 1, and the brush roller is located in the center of the lower part of the chassis 1. Figure 1 and Figure 2 Inside the housing 1, there is a double sprocket driven by a drive motor 2. The double sprocket includes a double large sprocket 3 and a double small sprocket 4 that rotate coaxially. The double large sprocket 3 drives the brush roller small sprocket 5 through a first chain 7. The first chain 7 passes around the double large sprocket 3, below the front reversing small sprocket 6, above the brush roller small sprocket 5, and below the rear reversing small sprocket 6 in sequence, and then returns to the double large sprocket 3. The rotation direction of the brush roller small sprocket 5 is opposite to that of the double large sprocket 3. The double small sprocket 4 drives the travel wheel large sprocket 9 through a second chain 8. There are two sets of travel wheel large sprockets 9, which drive the two sets of travel wheels on the front and rear sides of the lower part of the housing 1 respectively. The second chain 8 passes around the double small sprocket 4, below the front travel wheel, and below the rear travel wheel in sequence, and then returns to the double small sprocket 4. The rotation direction of the travel large sprocket is the same as that of the double small sprocket 4.

[0023] A tensioning sprocket device is installed inside the housing 1 to tension the second chain 8. The tensioning sprocket device includes a crank arm 10 and a tensioning wheel 11. The middle part of the crank arm 10 is set inside the housing 1 via a pin, and the crank arm 10 rotates freely along the pin. One end of the crank arm 10 is provided with a tensioning wheel 11 that abuts against the second chain 8, and the other end of the crank arm 10 is connected to an elastic connecting device. In this embodiment, the elastic connecting device includes a spring seat 12, which is fixed inside the housing 1. A compression spring 14 and a screw 13 are provided inside the spring seat 12. One end of the screw 13 passes through the spring seat 12 and is hinged to the other end of the crank arm 10. The other end of the screw 13 is fitted with a screwed adjusting nut. The compression spring 14 is fitted on the screw 13 and is located between the spring seat 12 and the adjusting nut. The elastic potential energy of the compression spring 14 is adjusted by adjusting the adjusting nut, thereby adjusting the tension of the second chain 8.

[0024] The elastic connecting device can be replaced with a tension spring, with one end of the tension spring hinged to the other end of the crank arm and the other end of the tension spring hinged to the inner wall of the chassis.

[0025] The replaceable tensioning sprocket device includes a tensioning wheel and an elastic telescopic rod. One end of the elastic telescopic rod is hinged to the inner wall of the machine housing, and the other end of the elastic telescopic rod is hinged to the tensioning wheel. The tensioning wheel abuts against the second chain. The elastic telescopic rod includes a telescopic rod and a compression spring.

[0026] The alternative tensioning sprocket device includes a tensioning wheel and a tension spring. The tensioning wheel is located inside the second chain, which passes around the tensioning wheel. One end of the tension spring is hinged to the tensioning wheel, and the other end of the tension spring is hinged to the inner wall of the chassis outside the range of the second chain.

[0027] This application is used for the automatic cleaning of photovoltaic panels. After cleaning begins, driven by the drive motor 2, the double sprockets rotate. The double small sprockets 4 drive the large sprockets 9 of the walking wheels to rotate via the second chain 8, thereby driving the walking wheels to move along the edge of the photovoltaic panel. The double large sprockets 3 drive the small sprockets 5 of the brush roller to rotate rapidly via the first chain 7, thereby driving the brush roller to quickly clean the surface of the photovoltaic panel, realizing that the cleaning robot can clean the photovoltaic panel while moving. At the same time, the tensioning sprocket device maintains tension on the second chain 8 at all times through an elastic structure.

[0028] In summary, based on the above structure and working process, it can be seen that the high-speed ratio chain-driven photovoltaic panel cleaning robot described in this application has a novel concept and ingenious design. It can improve the speed ratio between the walking wheel and the brush roller, effectively improve the cleaning ability of the brush roller when the cleaning robot is moving, and make it clean the photovoltaic panels more thoroughly.

Claims

1. A large speed ratio chain drive photovoltaic panel cleaning robot, comprising a box, a walking wheel and a brush roller are arranged on the lower part of the box respectively, the walking wheel is located on the front and rear sides of the lower part of the box, and the brush roller is located in the center of the lower part of the box, characterized in that: The double sprocket wheel driven by the driving motor is arranged in the cabinet, including coaxial double large sprocket wheel and double small sprocket wheel, the double large sprocket wheel drives the brush roller small sprocket wheel through the first chain, the brush roller small sprocket wheel drives the brush roller, the double small sprocket wheel drives the walking wheel large sprocket wheel through the second chain, the walking wheel large sprocket wheel has two groups, and drives two groups of walking wheels on the front and rear sides of the lower part of the cabinet.

2. The cleaning robot according to claim 1, characterized in that: The rotating direction of the brush roller small sprocket wheel is opposite to that of the walking wheel large sprocket wheel.

3. The cleaning robot according to claim 2, characterized in that: The front and rear sides of the brush roller small sprocket wheel are respectively provided with reversing small sprocket wheels, and the first chain is sequentially wound around the double large sprocket wheel, the lower side of the front reversing small sprocket wheel, the upper side of the brush roller small sprocket wheel, the lower side of the rear reversing small sprocket wheel and the double large sprocket wheel.

4. The cleaning robot according to claim 1, wherein: The tensioning sprocket device is arranged in the cabinet, and the second chain is tensioned.

5. The cleaning robot according to claim 4, wherein: The tensioning sprocket device includes a toggle arm and a tensioning wheel, the middle part of the toggle arm is arranged in the cabinet through a pin shaft, the toggle arm is freely rotated along the pin shaft, one end of the toggle arm is provided with the tensioning wheel abutting against the second chain, and the other end of the toggle arm is connected with an elastic connecting device.

6. The cleaning robot according to claim 5, wherein: The elastic connecting device includes a spring seat, the spring seat is fixed in the cabinet, a compression spring and a screw rod are arranged in the spring seat, one end of the screw rod is hinged to the other end of the toggle arm through the spring seat, the other end of the screw rod is sleeved with a screw adjusting nut, the compression spring is sleeved on the screw rod and arranged between the spring seat and the adjusting nut.

Images