Heliostat cleaning device
By combining the staggered arrangement of disc-type and rolling brush structures with obstacle avoidance sensors, the problem of easy damage to the heliostat cleaning device on uneven road surfaces has been solved, achieving efficient and stable cleaning results.
Patent Information
- Application Number
- CN202422905434.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing heliostat cleaning devices are prone to collisions between the brush head and the heliostat due to uneven road surfaces, which can damage the mirror surface. Furthermore, they have low cleaning efficiency and poor adaptability, especially when cleaning large areas of heliostats.
A heliostat cleaning device was designed, which combines a disc-type and a rolling brush structure. It adopts staggered roller brushes, is equipped with obstacle avoidance sensors and a buffer structure, and adjusts the position of the roller brushes through a support arm. Combined with high and low pressure spray bars, it avoids collisions and improves the cleaning effect.
It effectively avoids damage to the heliostat, improves cleaning quality and efficiency, enhances adaptability to different road conditions, and ensures the stability and cleanliness of the cleaning process.
Smart Images
Figure CN223530910U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heliostat technology, specifically to a heliostat cleaning device. Background Technology
[0002] The world is currently facing extremely serious energy and environmental problems, and solar thermal power generation is one of the key technologies for solving these problems. Tower-type molten salt solar thermal power generation is one of the technical routes for solar thermal power generation, with a concentrator field consisting of a large number of concentrating devices (such as heliostats) arranged according to a certain pattern. Solar thermal power plants are usually built in harsh environments such as deserts and Gobi, where dust and other small particles adhere to and accumulate on the mirror surfaces during operation. This significantly reduces the reflectivity of the heliostats, thus affecting the overall power generation efficiency of the plant. Ensuring the high cleanliness of the heliostat surfaces is crucial for ensuring the efficient operation of the entire solar thermal power plant and improving its power generation efficiency.
[0003] Currently, heliostat cleaning vehicles primarily use a side-cleaning method, meaning the cleaning unit is located on one side of the heliostat. Commonly used cleaning brushes are of two types: disc-type circular brushes or rolling cylindrical brushes. The bristles are usually quite soft to avoid scratching the heliostat.
[0004] Rotary disc circular brush cleaning truck: Each cleaning truck typically has one or more rotary disc circular brushes arranged in a row, depending on the size of the heliostat. The total length of the brush head covers the heliostat surface. The brush head rotates by rotating the rotary disc, causing the bristles to rotate and perform the cleaning operation. Due to centrifugal force, the soft bristles on the brush head extend towards the heliostat after the rotary disc rotates. However, the straightened bristles still maintain a certain angle with the normal direction of the heliostat. To ensure effective contact between the bristles and the heliostat, the distance between the brush head and the heliostat must be kept within a small range, and the rotation speed of the rotary disc must be controlled within a reasonable range for effective cleaning. If the distance between the brush head and the heliostat is too small, the force of the brush head pressing on the heliostat will increase, thus increasing the probability of damage. If the distance is too large, the rotation speed of the rotary disc must be controlled within a reasonable range to ensure effective contact, making the cleaning operation more difficult.
[0005] Rolling cylindrical brush cleaning truck: Each cleaning truck is typically equipped with a long rotating shaft that drives a cylindrical brush to rotate for cleaning. The length of the long rotating shaft and the brush are determined according to the size of the heliostat, and the total length of the brush head covers the mirror surface. During the cleaning operation, the long rotating shaft is perpendicular to the direction of travel of the cleaning truck. After the long rotating shaft rotates, under the action of centrifugal force, the soft bristles on the brush head will extend towards the heliostat, and after the rotating shaft reaches a certain speed, the bristles can make effective perpendicular contact with the heliostat surface, thereby completing the cleaning operation.
[0006] However, the roads used by cleaning vehicles at heliostat fields are typically natural surfaces with varying degrees of potholes. Currently, long-axis cylindrical brushes generally lack automatic shock absorption and obstacle avoidance devices. This means that during vehicle movement and cleaning, the brush head may collide with the heliostats due to uneven surfaces, potentially causing damage. Furthermore, because the cylindrical roller brush is usually designed as a single long axis, its length reduces its adaptability to the heliostat surface shape, increasing the distance between some brush bristles and some heliostat mirrors, thus reducing cleaning efficiency. Additionally, when the heliostat area is large, the roller also needs to be longer. A longer roller increases the swaying of the brush during the cleaning vehicle's movement or rotation, which is detrimental to cleaning the heliostats and maintaining the stability of the cleaning vehicle. Utility Model Content
[0007] To address the shortcomings of the existing technology, this utility model provides a heliostat cleaning device that combines the advantages of conventional disc-type circular brush and rolling cylindrical brush structure, while avoiding the disadvantages of both. It can ensure cleaning quality and effectively prevent collisions with the heliostat, thereby avoiding damage to the heliostat.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A heliostat cleaning device, the cleaning device comprising an integral support frame, a roller brush, a roller brush support frame, an obstacle avoidance structure, a support arm, a water tank, and a spray bar;
[0010] The integral support frame is mounted on the vehicle via the support arm, the water tank is mounted on the vehicle, and the integral support frame is located on one side of the water tank; the roller brush support frame is mounted on the side of the integral support frame away from the water tank via the obstacle avoidance structure; multiple roller brush support frames are arranged in an alternating manner on the integral support frame; the roller brush is mounted on the roller brush support frame via a rotating shaft; the spray bar is mounted on the roller brush support frame and connected to the water tank, and water in the water tank is sprayed out through the spray bar.
[0011] Furthermore, the obstacle avoidance structure includes a linkage frame and a buffer component; the roller brush support frame is connected to the overall support frame through at least two sets of vertically spaced linkage frames, and the buffer component is installed on the roller brush support frame and the overall support frame at both ends, respectively.
[0012] Furthermore, the obstacle avoidance structure also includes an obstacle avoidance sensor, which is installed on the upper end of the roller brush support frame and is used to monitor the distance between the roller brush and the surface of the heliostat to be cleaned.
[0013] Furthermore, the obstacle avoidance sensor is a lidar, ultrasonic sensor, or infrared sensor.
[0014] Furthermore, the buffer element is an obstacle avoidance spring, a hydraulic rod, a pneumatic obstacle avoidance structure, or an elastic connecting rod.
[0015] Furthermore, the spray bar includes a high-pressure spray bar and / or a low-pressure spray bar; the low-pressure spray bar and the high-pressure spray bar are arranged in a staggered manner on the vertical surface of the roller brush support frame, and are respectively connected to the water tank through pipelines.
[0016] Furthermore, the support arm includes a horizontal telescopic adjustment arm, an angle adjustment support arm, and a height adjustment support arm; the height adjustment support arm is mounted on the vehicle chassis, the angle adjustment support arm is perpendicular to the height adjustment support arm, one end is connected to the top of the height adjustment support arm, and the other end is connected to the horizontal telescopic adjustment arm, and the horizontal telescopic adjustment arm is positioned above the water tank perpendicular to the vehicle's driving direction, and the overall support frame is mounted on the end of the horizontal telescopic adjustment arm; the horizontal telescopic adjustment arm is used to adjust the horizontal extension length of the overall support frame; the angle adjustment support arm is used to adjust the horizontal rotation angle and pitch angle of the horizontal telescopic adjustment arm; and the height adjustment support arm is used to adjust the vertical height of the overall support frame.
[0017] Furthermore, the horizontal telescopic adjusting arm consists of a hydraulic cylinder and a telescopic arm, and the hydraulic cylinder is connected to the overall support frame through the telescopic arm.
[0018] Furthermore, the angle-adjustable support arm is connected to the horizontal telescopic adjustment arm via an angle-adjustable structure.
[0019] Furthermore, the roller brush is a cylindrical roller brush.
[0020] The beneficial effects of this utility model are:
[0021] This utility model heliostat cleaning device has a simple structure and ingenious design. It combines the advantages of conventional disc-type circular brush and rolling cylindrical brush structure, while avoiding the disadvantages of both. This ensures cleaning quality and avoids damage to the heliostat.
[0022] The roller brushes of this invention are arranged in two staggered rows, which can completely cover the surface of the heliostat. They are driven by motors, which can effectively control the rotation speed of each roller brush, reduce the difficulty of cleaning operations, and ensure the cleaning effect.
[0023] This invention allows for adjustment of the roller brush's height, horizontal distance, horizontal rotation angle, and pitch angle via an adjustable support arm. Combined with an obstacle avoidance sensor, the distance between the roller brush and the heliostat can be controlled within a reasonable range to ensure effective contact between the roller brush and the heliostat during operation. This satisfies cleaning requirements while preventing damage to the heliostat.
[0024] This invention employs multiple cylindrical roller brushes, which are more adaptable to the shape of the heliostat surface and make it easier for the roller brushes and the heliostat surface to fit together, thus ensuring cleaning quality. Through the obstacle avoidance structure, this invention can adjust the distance between the roller brushes and the heliostat in a timely manner when the road surface is uneven or the vehicle body shakes or vibrates slightly due to uneven driving conditions, effectively avoiding collisions between the roller brushes and the heliostat and thus preventing damage to the heliostat.
[0025] This invention uses a high-pressure spray bar and / or a low-pressure spray bar to spray water from the water tank at different pressures. High-pressure water is used to clean stubborn dust, while low-pressure water is used for regular cleaning. This combined high- and low-pressure cleaning mode can ensure cleaning quality and avoid damage to the heliostat. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the heliostat cleaning device when the buffer component is installed vertically in this utility model.
[0027] Figure 2 This is a right-side view of the heliostat cleaning device when the buffer component is installed vertically in this utility model.
[0028] Figure 3 This is a front view of the heliostat cleaning device when the buffer component is installed vertically in this utility model;
[0029] Figure 4 This is a schematic diagram of the roller brush part of the heliostat cleaning device when the buffer component is installed vertically in this utility model;
[0030] Figure 5 This is a top view of the roller brush portion of the heliostat cleaning device when the buffer component is installed vertically in this utility model.
[0031] Figure 6 This is a schematic diagram of the heliostat cleaning device when the buffer component is installed horizontally in this utility model;
[0032] Figure 7 This is a right-side view of the heliostat cleaning device when the buffer component is installed horizontally in this utility model.
[0033] Figure 8 This is a top view of the heliostat cleaning device when the buffer component is installed horizontally in this utility model.
[0034] Among them: 1-Integral support frame, 2-Roller brush, 3-Obstacle avoidance laser radar, 4-Motor, 5-Roller brush support frame, 6-Linkage frame, 7-Buffer component, 8-Horizontal telescopic adjustment arm, 9-Angle adjustment support arm, 10-Height adjustment support arm, 11-Water tank, 12-High pressure spray bar, 13-Low pressure spray bar. Detailed Implementation
[0035] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of this utility model.
[0036] The terms used in this application, such as top, bottom, left, right, inside, outside, front end, rear end, head, and tail, are based on the orientations or positional relationships shown in the accompanying drawings. Different drawings may result in different positional relationships, therefore they should not be construed as limiting the scope of protection.
[0037] In this utility model, the terms "installation," "connection," "interlocking," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a connection that allows communication, a direct connection, or an indirect connection through an intermediate medium. They can also refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0038] This embodiment describes a heliostat cleaning device, which is installed on a vehicle and can be used to clean the surface of an object. This embodiment uses cleaning the surface of a heliostat as an example for illustration.
[0039] like Figures 1 to 3 As shown, the cleaning device includes an overall support frame 1, a roller brush 2, an obstacle avoidance structure, a motor 4, a roller brush support frame 5, a support arm, a water tank 11, a high-pressure spray bar 12, and a low-pressure spray bar 13.
[0040] The water tank 11 is installed on the vehicle, and the overall support frame 1 is installed on the vehicle via a support arm and is located on the side of the water tank 11.
[0041] The roller brush 2 is mounted on the roller brush support frame 5 via a rotating shaft. Multiple roller brush support frames 5 are arranged in at least two staggered rows on the side of the overall support frame 1 away from the water tank 11, according to the size of the heliostat, so that multiple rows of roller brushes 2 can completely cover the surface of the heliostat. The roller brush 2 used in this embodiment is a cylindrical roller brush.
[0042] Motor 4 is mounted on the upper end of roller brush support frame 5. Motor 4 is connected to the rotating shaft and is used to drive roller brush 2 to rotate.
[0043] In this embodiment, the roller brush support frame 5 is mounted on the overall support frame 1 via an obstacle avoidance structure. The obstacle avoidance structure achieves the purpose of buffering by being installed in a vertical or horizontal obstacle avoidance manner. Figures 4 to 8As shown, the obstacle avoidance structure includes an obstacle avoidance sensor 3, a linkage frame 6, and a buffer component 7. The roller brush support frame 5 is connected to the overall support frame 1 via at least two sets of vertically spaced linkage frames 6, and the middle of the roller brush support frame 5 is connected to the overall support frame 1 via the buffer component 7. This cleaning device, through the linkage frame 6 and the buffer component 7, can effectively prevent the roller brush 2 from colliding with the heliostat mirror surface when the road surface is uneven or the vehicle body shakes or vibrates slightly due to uneven driving conditions. The obstacle avoidance sensor 3 is installed on the upper end of the roller brush support frame 5 and can monitor the distance between the roller brush 2 and the heliostat in real time, so as to control the distance between the roller brush 2 and the heliostat on the cleaning device within a reasonable range and avoid the roller brush 2 damaging the heliostat.
[0044] In this implementation, the obstacle avoidance sensor 3 can be a ranging sensor such as a lidar, ultrasonic sensor, or infrared sensor. The linkage 6 can be installed at an angle, with the linkage 6 and the buffer 7 tilting in opposite directions to ensure the connection strength between the roller brush support frame 5 and the overall support frame 1. Each linkage 6 consists of two spaced connecting rods, which greatly ensures the stable connection between the roller brush support frame 5 and the overall support frame 1. The buffer 7 can be installed vertically or horizontally. When installed vertically, the buffer 7 is connected to the middle of the roller brush support frame 5, and the long axis of the buffer 7 is perpendicular to the horizontal axis of the roller brush support frame 5. This vertically installed buffer 7 can buffer vertical vibrations. When installed horizontally, one end of the buffer 7 is connected to the middle of one side of the roller brush support frame 5, and the other end is connected to the overall support frame 1 on the outside of the roller brush support frame 5. This horizontally installed buffer 7 can buffer horizontal vibrations. The buffer 7 can be an obstacle avoidance spring, hydraulic rod, pneumatic obstacle avoidance structure, elastic linkage, etc.
[0045] The low-pressure spray bar 13 and the high-pressure spray bar 12 are arranged in a staggered manner on the vertical surface of the roller brush support frame 5, and are respectively connected to the water tank 11 through pipelines. During operation, the high-pressure spray bar 12 and the low-pressure spray bar 13 spray high-pressure water and low-pressure water respectively to wash the surface of the heliostat. The low-pressure water first washes away the non-stubborn dust and other dirt attached to the surface, while the high-pressure water washes away the more stubborn dust and other dirt.
[0046] The support arm in this embodiment enables precise control of the position of the roller brush 2. The support arm includes a horizontal telescopic adjustment arm 8, an angle adjustment support arm 9, and a height adjustment support arm 10. The angle adjustment support arm 9 is positioned above the water tank 11 along the vehicle's travel direction. One end is connected to the top of the height adjustment support arm 10, and the two are perpendicular. The other end is connected to the horizontal telescopic adjustment arm 8 via an angle adjustment structure, and the horizontal telescopic adjustment arm 8 is positioned above the water tank 11 perpendicular to the vehicle's travel direction. The height adjustment support arm 10 is mounted on the vehicle chassis and is used to adjust the vertical height of the overall support frame 1 to meet the cleaning requirements of heliostats at different heights. The angle adjustment support arm 9 can adjust the horizontal rotation angle and pitch angle of the horizontal telescopic adjustment arm 8 via an angle adjustment structure. The horizontal telescopic adjustment arm 8 consists of a hydraulic cylinder and a telescopic arm. The hydraulic cylinder is connected to the overall support frame 1 via the telescopic arm. The hydraulic cylinder drives the telescopic arm to extend and retract, adjusting the horizontal extension length of the overall support frame 1, thereby adjusting the horizontal extension length of the roller brush 2. In addition, the height adjustment support arm 10 of this embodiment can adopt other conventional telescopic structures besides the same structure as the horizontal telescopic adjustment arm 8.
[0047] Although the principles of this utility model have been described in detail above with reference to preferred embodiments, those skilled in the art should understand that the above embodiments are merely illustrative explanations of the implementation of this utility model and are not intended to limit the scope of this utility model. The details in the embodiments do not constitute a limitation on the scope of this utility model. Any obvious changes, such as equivalent transformations or simple substitutions, based on the technical solution of this utility model without departing from its spirit and scope fall within the protection scope of this utility model.
Claims
1. A heliostat cleaning device, characterized in that, The cleaning device includes an overall support frame (1), a roller brush (2), a roller brush support frame (5), an obstacle avoidance structure, a support arm, a water tank (11), and a spray bar; The integral support frame (1) is mounted on the vehicle via the support arm, the water tank (11) is mounted on the vehicle, and the integral support frame (1) is located on one side of the water tank (11); the roller brush support frame (5) is mounted on the side of the integral support frame (1) away from the water tank (11) via the obstacle avoidance structure; multiple roller brush support frames (5) are arranged in an alternating manner on the integral support frame (1); the roller brush (2) is mounted on the roller brush support frame (5) via a rotating shaft; the spray bar is mounted on the roller brush support frame (5) and connected to the water tank (11), and the water in the water tank (11) is sprayed out through the spray bar.
2. The heliostat cleaning apparatus according to claim 1, characterized in that, The obstacle avoidance structure includes a linkage frame (6) and a buffer (7); the roller brush support frame (5) is connected to the overall support frame (1) through at least two sets of vertically spaced linkage frames (6), and the buffer (7) is installed on the roller brush support frame (5) and the overall support frame (1) at both ends respectively.
3. The heliostat cleaning apparatus according to claim 2, characterized in that, The obstacle avoidance structure also includes an obstacle avoidance sensor (3), which is installed on the upper end of the roller brush support frame (5) and is used to monitor the distance between the roller brush (2) and the surface of the heliostat to be cleaned.
4. The heliostat cleaning apparatus according to claim 3, characterized in that, The obstacle avoidance sensor (3) is a lidar, ultrasonic sensor, or infrared sensor.
5. The heliostat cleaning apparatus according to claim 2, characterized in that, The buffer (7) is an obstacle avoidance spring, a hydraulic rod, a pneumatic obstacle avoidance structure, or an elastic connecting rod.
6. The heliostat cleaning apparatus according to claim 1, characterized in that, The spray bar includes a high-pressure spray bar (12) and / or a low-pressure spray bar (13); the low-pressure spray bar (13) and the high-pressure spray bar (12) are arranged in a staggered manner on the vertical surface of the roller brush support frame (5) and are respectively connected to the water tank (11) through pipelines.
7. The heliostat cleaning apparatus according to claim 1, characterized in that, The support arm includes a horizontal telescopic adjustment arm (8), an angle adjustment support arm (9), and a height adjustment support arm (10); the height adjustment support arm (10) is mounted on the vehicle chassis, the angle adjustment support arm (9) is perpendicular to the height adjustment support arm (10), one end is connected to the top of the height adjustment support arm (10), and the other end is connected to the horizontal telescopic adjustment arm (8), and the horizontal telescopic adjustment arm (8) is positioned above the water tank (11) perpendicular to the vehicle's driving direction, and the overall support frame (1) is mounted on the end of the horizontal telescopic adjustment arm (8); the horizontal telescopic adjustment arm (8) is used to adjust the horizontal extension length of the overall support frame (1); the angle adjustment support arm (9) is used to adjust the horizontal rotation angle and pitch angle of the horizontal telescopic adjustment arm (8); the height adjustment support arm (10) is used to adjust the vertical height of the overall support frame (1).
8. The heliostat cleaning apparatus according to claim 7, characterized in that, The horizontal telescopic adjustment arm (8) consists of a hydraulic cylinder and a telescopic arm, and the hydraulic cylinder is connected to the overall support frame (1) through the telescopic arm.
9. The heliostat cleaning apparatus according to claim 7, characterized in that, The angle-adjustable support arm (9) is connected to the horizontal telescopic adjustment arm (8) through an angle-adjustable structure.
10. The heliostat cleaning apparatus according to claim 1, characterized in that, The roller brush (2) is a cylindrical roller brush.