A cleaning vehicle for small heliostat

Abstract

This invention discloses a small cleaning cart for heliostats, comprising a mobile vehicle body and a water tank, an electrical control cabinet, and a distance adjustment mechanism mounted on the mobile vehicle body. A cleaning mechanism is mounted on the distance adjustment mechanism, comprising a roller brush mechanism, a scraper mechanism, and a water spraying mechanism. The roller brush mechanism and the scraper mechanism are fixedly connected by an upper connecting rod and a lower connecting rod. The water spraying mechanism includes a water spray pipe and nozzles disposed on the water spray pipe, with the nozzles facing the scraper mechanism. The scraper mechanism includes a scraper frame and at least two scrapers mounted on the scraper frame, the length of the scrapers gradually increasing from front to back. Two forward-extending brackets are mounted on the frame of the roller brush mechanism, each bracket housing a detection sensor. A rearward-extending bracket is mounted on the scraper frame, also housing a detection sensor. The cleaning cart disclosed in this invention is easy to move, allows for flexible adjustment of the distance between the cleaning mechanism and the heliostat, and provides good cleaning results.

Description

Technical Field

[0001] This invention relates to the field of heliostat cleaning, and in particular to a small heliostat cleaning cart. Background Technology

[0002] In small-scale heliostat solar thermal power generation, the number of heliostats in the field is large, the cleaning channels are narrow, the ground is soft and the bearing capacity is poor, and the heliostats are installed in the open environment of desert areas. Due to the sand and dust covering, the power generation efficiency is affected, and the mirror surface needs to be cleaned regularly to improve the mirror surface reflectivity.

[0003] Existing heliostat cleaning devices have the following main drawbacks:

[0004] 1. Cleaning vehicles that use light or medium-sized trucks as mobile carriers are large in size and weight, and cannot be used normally in the cleaning channel of small heliostat fields.

[0005] 2. The cleaning operation is carried out by using a roller brush, nozzle rinsing, and soft materials such as sponges for scrubbing. The nozzle is centrally located and far away from the scrubbing materials such as sponges. Since the heliostat is made of glass and has a large tilt angle, the rinsing water will flow down quickly before scrubbing, which will affect the scrubbing effect and waste water.

[0006] 3. The cleaning devices of the heliostat cleaning system mostly use single-layer cleaning. Due to the relatively soft material, the contact force between the device and the heliostat is relatively small, resulting in poor cleaning effect.

[0007] 4. Due to the small size of the heliostats on site and the low distance between the mirror surface and the ground, the existing heliostat cleaning mechanism is set up at a high height, and the mirror surface below the truck bed cannot be cleaned. When the cleaning mechanism is set up below the vehicle body, it will interfere with the vehicle body when it is retracted. Therefore, the existing cleaning mechanism cannot be well matched to the installation scenario of small heliostats.

[0008] 5. Existing solar thermal mirror cleaning vehicles all use fuel as power, and the emissions after combustion will cause certain pollution to the environment. Summary of the Invention

[0009] To address the aforementioned technical problems, this invention provides a small cleaning cart for heliostats, achieving the goals of small size, light weight, easy adjustment of the cleaning mechanism, and improved cleaning effect. Furthermore, this cleaning cart uses an electric drive unit, achieving a green, environmentally friendly, and pollution-free operation.

[0010] To achieve the above objectives, the technical solution of the present invention is as follows:

[0011] A small heliostat cleaning vehicle includes a mobile vehicle body and a water tank, an electrical control cabinet, and a distance adjustment mechanism mounted on the mobile vehicle body. The distance adjustment mechanism comprises two sets, respectively located on the left and right sides of the rear of the mobile vehicle body. A cleaning mechanism is mounted on the distance adjustment mechanism. The cleaning mechanism includes a roller brush mechanism, a scraper mechanism, and a water spraying mechanism. The roller brush mechanism and the scraper mechanism are fixedly connected by an upper connecting rod and a lower connecting rod. The water spraying mechanism includes a water spray pipe and nozzles mounted on the water spray pipe. The water spray pipe is fixed to the frame of the roller brush mechanism and located between the roller brush mechanism and the scraper mechanism. The nozzles face the scraper mechanism. The scraper mechanism includes a scraper frame and at least two scrapers mounted on the scraper frame. The length of the scrapers gradually increases from front to back. Two forward-extending brackets are mounted on the frame of the roller brush mechanism, and a detection sensor is mounted on each bracket. A rearward-extending bracket is mounted on the scraper frame, and a second detection sensor is mounted on each bracket.

[0012] In the above scheme, the distance adjustment mechanism includes a base and a linear module mounted on the base. The moving end of the linear module is equipped with an L-shaped movable support. Connecting rod one and connecting rod two are respectively installed on both sides of the L-shaped structure of the movable support. One end of connecting rod one is rotatably mounted on the movable support through a positioning pin. The other end of connecting rod one and one end of connecting rod two are connected by a connecting pin. The other end of connecting rod two is connected to a lower connecting rod through a rotating pin. Arc-shaped grooves are respectively opened on both sides of the L-shaped structure of the movable support. The middle parts of connecting rod one and connecting rod two pass through the arc-shaped grooves through locking pins and can slide within the arc-shaped grooves.

[0013] In a further technical solution, an electric actuator is hinged to the second connecting rod, and the moving end of the electric actuator is hinged to the upper connecting rod.

[0014] In the above scheme, the roller brush mechanism includes a frame and a roller brush mounted on the frame. A motor is mounted on the top of the frame. The motor is connected to one end of the roller brush through a coupling, and the other end of the roller brush is mounted on the frame through a bearing.

[0015] In the above scheme, the scraper is folded with one side longer than the other and then fixed in the square groove of the scraper frame by pressure strips and bolts.

[0016] In the above scheme, the mobile vehicle is a four-wheel drive electric vehicle.

[0017] The present invention provides a small heliostat cleaning cart with the following advantages through the above technical solution:

[0018] 1. The nozzle of the present invention does not adopt a vertical spraying arrangement towards the mirror surface, but is tilted at a certain angle to rinse towards the scrubbing scraper, which can effectively shorten the distance between the sprayed water flow and the scrubbing scraper and improve the water utilization rate.

[0019] 2. The scraper of the present invention adopts a multi-layer scrubbing structure with gradually increasing scraper material, and the multi-layer scrubbing and the contact pressure between the scraper and the mirror surface gradually increase, effectively improving the cleaning effect.

[0020] 3. This invention uses a small four-wheel drive electric vehicle, which is small in size, light in weight, flexible and simple to operate, and has strong ground passability. In addition, the electric vehicle's power supply can provide power to the cleaning mechanism, eliminating the need for an additional power unit.

[0021] 4. The distance adjustment mechanism of the present invention can retract the cleaning mechanism to the inside of the vehicle body without interfering with the vehicle body, and ensures that the cleaning mechanism can clean the entire surface of the small heliostat that is relatively low to the ground. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0023] Figure 1 This is a schematic diagram of a small heliostat cleaning cart disclosed in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection between the distance adjustment mechanism and the cleaning mechanism;

[0025] Figure 3 This is a schematic diagram of the scraper mechanism;

[0026] Figure 4 This is a schematic diagram of the roller brush mechanism;

[0027] Figure 5 The diagram shows the structure of the movable support; (a) extended to the limit position; (b) movable support; (c) retracted to the limit position.

[0028] In the diagram: 1. Moving vehicle body; 2. Water tank; 3. Electrical control cabinet; 4. Distance adjustment mechanism; 5. Roller brush mechanism; 6. Scraper mechanism; 7. Water spraying mechanism; 8. Upper connecting rod; 9. Lower connecting rod; 10. Water spray pipe; 11. Nozzle; 12. Scraper; 13. Pressure strip; 14. Scraper frame; 15. Frame; 16. Roller brush; 17. Motor; 18. Coupling; 19. Bearing; 20. Bracket 1; 21. Detection sensor 1; 22. Bracket 2; 23. Detection sensor 2; 24. Base; 25. Linear module; 26. Moving support; 27. Connecting rod 1; 28. Connecting rod 2; 29. ​​Positioning pin; 30. Connecting pin; 31. Rotating pin; 32. Arc groove; 33. Locking pin; 34. Electric actuator; 35. Bolt. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] This invention provides a small cleaning cart for heliostats, such as... Figure 1 As shown, the device includes a mobile vehicle body 1 and a water tank 2, an electrical control cabinet 3, and a distance adjustment mechanism 4 installed on the mobile vehicle body 1. In this embodiment, the mobile vehicle body 1 is a four-wheel drive electric vehicle, which is small in size, light in weight, flexible and simple to operate, and has good road passability. Its battery pack provides power for the water pump, motor 17, electrical control system, etc.

[0031] like Figure 2 As shown, the distance adjustment mechanism 4 includes two sets, respectively located on the left and right sides of the rear of the mobile vehicle body 1. A cleaning mechanism is installed on the distance adjustment mechanism 4. The cleaning mechanism includes a roller brush mechanism 5, a scraper mechanism 6, and a water spraying mechanism 7. The roller brush mechanism 5 and the scraper mechanism 6 are fixedly connected by an upper connecting rod 8 and a lower connecting rod 9. The water spraying mechanism 7 includes a water spray pipe 10 and nozzles 11 installed on the water spray pipe 10. The water spray pipe 10 is connected to the water tank 2 through a water pump. The water spray pipe 10 is fixed on the frame of the roller brush mechanism 5 and is located between the roller brush mechanism 5 and the scraper mechanism 6. The nozzles 11 face the scraper mechanism 6. The installation form of the nozzles 11, which are inclined towards the scraper, can effectively shorten the distance between the sprayed water flow and the scrubbing scraper, which can improve the utilization efficiency of the cleaning water and prevent waste.

[0032] like Figure 3 As shown, the scraper mechanism 6 includes a scraper frame 14 and at least two scrapers 12 mounted on the scraper frame 14. The length of the scrapers 12 gradually increases from front to back. In this embodiment, the three scrapers 12 are folded with one side longer than the other and fixed in the aluminum alloy square groove of the scraper frame 14 by pressure strips 13 and bolts 35. The scrapers 12 can be made of materials such as polyethylene, rubber, or sponge. In this embodiment, the gradual increase in the length of the scrapers 12 increases the contact pressure between the scrapers 12 and the mirror surface as the vehicle moves forward, effectively improving the cleaning effect.

[0033] like Figure 4 As shown, the roller brush mechanism 5 includes a frame 15 and a roller brush 16 mounted on the frame 15. A motor 17 is mounted on the top of the frame 15. The motor 17 is connected to one end of the roller brush 16 through a coupling 18. The other end of the roller brush 16 is mounted on the frame through a bearing 19.

[0034] like Figure 2As shown, two forward-extending brackets 20 are mounted on the frame 15 of the roller brush mechanism 5. A detection sensor 21 is mounted on each bracket 20 for detecting entry into the mirror surface. The measurement distances of the two sets of sensors are compared for angle adjustment. A rearward-extending bracket 22 is mounted on the scraper frame 14. A detection sensor 23 is mounted on each bracket 22 for detecting exit from the mirror surface.

[0035] The distance adjustment mechanism 4 includes a base 24 and a linear module 25 mounted on the base 24. The base 24 is bolted to the moving vehicle body 1. An L-shaped movable support 26 is mounted on the moving end of the linear module 25. Figure 5 As shown in (a), the movable support 26 has connecting rod 1 27 and connecting rod 28 installed on both sides of its L-shaped structure. One end of connecting rod 1 27 is rotatably mounted on the movable support 26 via a positioning pin 29. The other end of connecting rod 1 27 and one end of connecting rod 28 are connected via a connecting pin 30. The other end of connecting rod 28 is connected to the lower connecting rod 9 via a rotating pin 31. Figure 5 As shown in (b), the L-shaped structure of the movable support 26 has arc-shaped grooves 32 on both sides. The middle portions of connecting rod 27 and connecting rod 28 pass through the arc-shaped grooves 32 via locking pins 33 and can slide within the arc-shaped grooves 32. When the linear module 25 moves the cleaning mechanism to its innermost position, as shown in (b), Figure 5 As shown in (a), the cleaning mechanism is still outside the vehicle body. Loosening the locking pin 33 allows manual operation of connecting rods 27 and 28, causing them to rotate along the arc-shaped groove 32, thus moving the cleaning mechanism inside the vehicle body. Figure 5 As shown in (c).

[0036] like Figure 2 As shown, an electric push rod 34 is hinged to the second connecting rod 28. The moving end of the electric push rod 34 is hinged to the upper connecting rod 8. The pitch angle of the cleaning mechanism can be adjusted by the electric push rod 34.

[0037] Workflow: Adjust the distance adjustment device, loosen the locking pin 33, manually operate connecting rod 27 and connecting rod 28 to rotate them outward along the arc groove 32, moving the cleaning mechanism to the outside of the vehicle body. Start the vehicle and move forward. Detection sensor 21 detects the distance between the cleaning mechanism and the mirror surface. The linear module 25 moves the cleaning mechanism outward or inward according to the measured value. The electric push rod 34 adjusts the angle of the cleaning mechanism. The roller brush motor 17 starts, the water pump starts after a delay, and the water spray pipe 10 starts spraying water. The electric vehicle moves forward. According to the installation sequence, the roller brush enters the mirror surface first, then the nozzle 11 enters, and the scraper enters the mirror surface last. When the vehicle leaves the mirror surface, if detection sensor 23 does not detect a mirror surface signal, turn off the roller brush motor 17 and the water pump, and stop spraying water until a signal for the next mirror is detected. Repeat the aforementioned workflow. During vehicle movement, the cleaning mechanisms on both sides can clean both heliostats simultaneously or only one side.

[0038] It should be noted that when the detection sensor 21 detects that the distance between the cleaning mechanism and the mirror is greater than or less than the allowable limit, it reminds the driver to adjust the direction of travel. When the distance is within the allowable range, the linear module 25 moves the cleaning mechanism outward or inward according to the measured value. If there is a difference in the measured values ​​of the upper and lower sets of sensors, the angle adjustment electric push rod 34 adjusts the angle of the cleaning mechanism to ensure that the measured values ​​of the upper and lower sets of sensors are basically consistent. After the detection sensor 21 detects the mirror, it automatically calculates the delay time based on the distance between the sensor and the water spray pipe 10 and the vehicle speed feedback, starts the water pump, and the water spray pipe 10 sprays water. During the entire operation, the driver only needs to pay attention to the alarm signal fed back on the cab display screen. There are no other complicated operations, and the operation is simple and convenient.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A small cleaning cart for heliostats, characterized in that, The system includes a mobile vehicle body and a water tank, electrical control cabinet, and distance adjustment mechanism mounted on the mobile vehicle body. The distance adjustment mechanism comprises two sets, respectively located on the left and right sides of the rear of the mobile vehicle body. A cleaning mechanism is mounted on each distance adjustment mechanism. The cleaning mechanism includes a roller brush mechanism, a scraper mechanism, and a water spraying mechanism. The roller brush mechanism and the scraper mechanism are fixedly connected by an upper connecting rod and a lower connecting rod. The water spraying mechanism includes a water spray pipe and nozzles mounted on the water spray pipe. The water spray pipe is fixed to the frame of the roller brush mechanism and located between the roller brush mechanism and the scraper mechanism. The nozzles face the scraper mechanism. The scraper mechanism includes a scraper frame and at least two scrapers mounted on the scraper frame. The length of the scrapers gradually increases from front to back. Two forward-extending brackets (first type) are mounted on the frame of the roller brush mechanism, and a detection sensor (first type) is mounted on the first bracket. A rearward-extending bracket (second type) is mounted on the scraper frame, and a detection sensor (second type) is mounted on the second bracket. The distance adjustment mechanism includes a base and a linear module mounted on the base. The moving end of the linear module is equipped with an L-shaped movable support. Connecting rod one and connecting rod two are respectively installed on both sides of the L-shaped structure of the movable support. One end of connecting rod one is rotatably mounted on the movable support through a positioning pin. The other end of connecting rod one and one end of connecting rod two are connected by a connecting pin. The other end of connecting rod two is connected to a lower connecting rod through a rotating pin. Arc-shaped grooves are respectively opened on both sides of the L-shaped structure of the movable support. The middle parts of connecting rod one and connecting rod two pass through the arc-shaped grooves through locking pins and can slide within the arc-shaped grooves. The scraper is folded with one side longer than the other and then fixed in the square groove of the scraper frame by pressure strips and bolts.

2. The small heliostat cleaning cart according to claim 1, characterized in that, An electric actuator is hinged to the second connecting rod, and the moving end of the electric actuator is hinged to the upper connecting rod.

3. The small heliostat cleaning cart according to claim 1, characterized in that, The roller brush mechanism includes a frame and a roller brush mounted on the frame. A motor is mounted on the top of the frame. The motor is connected to one end of the roller brush via a coupling, and the other end of the roller brush is mounted on the frame via a bearing.

4. The small heliostat cleaning cart according to claim 1, characterized in that, The mobile vehicle is a four-wheel drive electric vehicle.

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