A dish brush for cleaning heliostat mirror

Abstract

The utility model relates to solar light and heat plate cleaning technical field especially, a kind of disc brush for heliostat mirror surface cleaning, its structure includes: disc brush mounting bracket, two disc brushes rotationally installed in the front end of disc brush mounting bracket, and hydraulic motor for driving disc brush synchronous rotation is installed on disc brush mounting bracket, the front end of disc brush mounting bracket is provided with water expeller along the cleaning direction of travel;Water expeller includes support frame, water expeller mechanism and driving mechanism;Support frame is fixedly connected to the front end of disc brush mounting bracket, the utility model is by the circulating water expeller structure of "pushing water and sticking mirror surface, return lifting and separating", disc brush generated by washing can be continuously pushed forward and isolated in the washing area front, from the root, the problem that the rotating disc brush is wrapped with sewage swing, causes the secondary pollution of clean mirror surface, single washing can reach high cleanliness requirement, without repeated operation, significantly improve cleaning efficiency, while reducing water consumption and brush wear.

Description

Technical Field

[0001] This utility model relates to the field of solar thermal panel cleaning technology, and in particular to a disc brush for cleaning the surface of a heliostat. Background Technology

[0002] Tower-type concentrated solar power (CSP) uses a large-scale heliostat array to focus sunlight onto a receiver, converting light energy into heat energy. The cleanliness of the heliostat mirrors directly determines the concentrating efficiency and power generation benefits, and daily operation and maintenance require maintaining a consistently high level of cleanliness. Currently, heliostat mirror cleaning often employs a combination of rotating disc brushes and spraying, relying on the rotating friction of the brush bristles to remove contaminants such as sand, dust, and salt crystals adhering to the mirror surface.

[0003] Patent document CN222301758U discloses a handheld electric disc brush device for cleaning photovoltaic panels, relating to the field of photovoltaic panel cleaning technology. This handheld electric disc brush device for cleaning photovoltaic panels includes: a motor bracket and a telescopic handle. A drive motor is mounted on both ends of the upper surface of the motor bracket via screws, and disc brushes are provided on both ends of the lower surface of the motor bracket. The output shaft of the drive motor passes through the motor bracket and is connected to the disc brushes. The telescopic handle is connected to the upper middle part of the motor bracket. In practical applications, it still has the following shortcomings: During the brushing process, the sprayed water mixes with the dirt to form wastewater. Since the disc brush is in a high-speed rotating state, the bristles will carry the wastewater and continuously swing. On the one hand, the wastewater is thrown towards the cleaned mirror area, causing secondary pollution. On the other hand, the wastewater adheres to the inside of the bristles and rotates repeatedly with the disc brush, continuously polluting the brushing surface. This results in watermarks and mud stains remaining after the mirror is cleaned, making it difficult to achieve the expected cleanliness requirements. It often requires repeated brushing to meet the standards, resulting in low cleaning efficiency and high water consumption and bristle wear. Utility Model Content

[0004] This invention provides a disc brush for cleaning the surface of a heliostat, which can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows: A disc brush for cleaning a heliostat mirror surface includes: a disc brush mounting frame, two disc brushes rotatably mounted on the front end of the mounting frame, and a hydraulic motor mounted on the mounting frame for driving the disc brushes to rotate synchronously. A water-driving device is provided at the front end of the mounting frame along the cleaning direction. The water-driving device includes a support frame, a water-driving mechanism, and a driving mechanism. The support frame is fixedly connected to the front end of the mounting frame, the water-driving mechanism is slidably connected to the lower part of the support frame, and the driving mechanism is drively connected between the disc brushes and the water-driving mechanism to convert the rotational motion of the disc brushes into the reciprocating motion of the water-driving mechanism along the cleaning direction. A trajectory guide structure is provided between the water-driving mechanism and the support frame. The trajectory guiding structure ensures that the water-driving mechanism is in a water-pushing position that conforms to the mirror surface when moving forward, and switches to a return position that lifts and detaches from the mirror surface when moving backward. The water-driving mechanism includes a water-driving plate support and a water-driving plate fixed to the lower end of the water-driving plate support, as well as a floating connecting frame fixedly connected to the upper end of the water-driving plate support. The lower end of the support frame is provided with a slide rail that slides in cooperation with the floating connecting frame. The trajectory guiding structure includes a circulating slide groove provided on the slide rail and a limiting slider provided on the side of the water-driving mechanism. The circulating slide groove is a closed unidirectional trajectory, including a water-pushing straight section at the bottom, a return straight section at the top, and an ascending transition section and a descending transition section that connect the water-pushing straight section and the return straight section at both ends, respectively.

[0006] As a further improvement, the circulating chute is provided with a one-way anti-reverse structure, which includes a first anti-reverse step located at the connection between the push water straight section and the rising transition section, and a second anti-reverse step located at the connection between the return straight section and the descending transition section, for limiting the reverse sliding of the limiting slider.

[0007] As a further improvement, the limiting slider is an elastic slider that can extend and retract in the left and right direction, and the end of the elastic slider always abuts against the circulating groove.

[0008] As a further improvement, the elastic slider includes a guide rod fixed to the side of the water-driving mechanism, a limiting block fixed to the outer end of the guide rod, a sliding pin slidably sleeved on the outside of the guide rod and the limiting block, and an elastic element disposed in the sliding pin; the elastic element abuts against the limiting block and the sliding pin, and applies an outward elastic thrust to the sliding pin.

[0009] As a further improvement, the driving mechanism includes a driving disk coaxially fixed to the top of the disc brush and a driving arm slidably mounted on the support frame in the front-back direction; the end face of the driving disk is provided with an eccentric driving groove, and one end of the driving arm is provided with a driving slider slidably embedded in the eccentric driving groove; when the disc brush rotates, the driving arm is driven to reciprocate in the front-back direction through the eccentric driving groove.

[0010] As a further improvement, the top of the water-driving mechanism is provided with a lifting chute extending in the vertical direction, and the top of the lifting chute is provided with a limiting stop bar; the other end of the drive arm is slidably engaged with the lifting chute and has a lifting track inside that is slidably engaged with the limiting stop bar.

[0011] As a further improvement, the water-driving plate bracket is provided with guide slopes at both ends along its length extending to the left and right.

[0012] As a further improvement, rounded corners are provided at the connections between the rising transition section, the falling transition section and the pushing straight section and the return straight section.

[0013] As a further improvement, the elastic element is a helical spring.

[0014] The beneficial effects of this utility model are: 1. This utility model uses a circulating water-driving structure of "pushing water to adhere to the mirror surface and lifting and detaching during return" to continuously push the wastewater generated by the disc brush forward and isolate it in front of the brushing area. This fundamentally solves the problem of the rotating disc brush carrying wastewater and causing secondary pollution to the cleaned mirror surface. A single brushing can achieve the required level of cleanliness without the need for repeated work, which significantly improves cleaning efficiency and reduces water consumption and brush wear. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a disc brush for cleaning the surface of a heliostat provided by this utility model; Figure 2 This is a schematic diagram of the structure of the water-driving mechanism and the drive mechanism of this utility model; Figure 3 This is a partial cross-sectional structural schematic diagram of the support frame of this utility model; Figure 4 This is a schematic diagram of the water-driving mechanism of this utility model; Figure 5 This is a schematic diagram of the structure of the limiting slider of this utility model; Figure 6 This is a schematic diagram of the structure of the circulating chute of this utility model. Figure 1 ; Figure 7 This is a schematic diagram of the structure of the circulating chute of this utility model. Figure 2 ; Figure 8 This is a schematic diagram of the drive mechanism of this utility model; Figure 9 This is a schematic diagram of the structure of the limiting slider of this utility model moving in the circulating slide.

[0017] In the diagram: 1. Disc brush mounting bracket; 2. Disc brush; 3. Hydraulic motor; 4. Support frame; 5. Water driving mechanism; 6. Drive mechanism; 41. Slide rail; 42. Circulating chute; 421. Water pushing straight section; 422. Return straight section; 423. Rising transition section; 424. Falling transition section; 425. First check step; 426. Second check step; 51. Water driving plate bracket; 52. Water driving plate; 53. Floating connecting frame; 531. Lifting chute; 532. Limiting stop bar; 54. Limiting slider; 541. Guide rod; 542. Limiting block; 543. Sliding pin; 544. Elastic element; 61. Drive disc; 62. Drive arm; 63. Eccentric drive groove; 64. Drive slider; 65. Lifting rail. Detailed Implementation

[0018] All embodiments of this utility model are intended to fall within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] Existing cleaning methods involve spraying water that mixes with dirt during the scrubbing process, creating wastewater. Because the disc brush rotates at high speed, the bristles carry this wastewater with them, causing secondary pollution as the wastewater is flung towards the already cleaned mirror surface. Furthermore, the wastewater adheres to the inside of the bristles and continues to contaminate the scrubbing surface with the repeated rotation of the brush, resulting in residual watermarks and mud stains after cleaning. This makes it difficult to achieve the desired cleanliness level, often requiring multiple scrubbing cycles to meet the standards. This process is inefficient, consumes a lot of water, and causes significant bristle wear. To address these technical problems, this paper proposes the following technical solution: Reference Figures 1-9 As shown, a heliostat mirror cleaning brush includes a brush mounting frame 1, two brushes 2 rotatably mounted on the front end of the brush mounting frame 1, and a hydraulic motor 3 mounted on the brush mounting frame 1 for driving the two brushes 2 to rotate synchronously. The two brushes 2 are arranged symmetrically from left to right, and the hydraulic motor 3 drives the two brushes 2 to rotate in the same direction through a transmission gear set to perform a brushing operation on the heliostat mirror surface.

[0021] The front end of the disc brush mounting frame 1 along the cleaning direction is equipped with a water-driving device, which consists of three parts: a support frame 4, a water-driving mechanism 5, and a drive mechanism 6. The rear end of the support frame 4 is fixedly connected to the front end of the disc brush mounting frame 1 and moves synchronously along the mirror surface with the disc brush mounting frame 1. The water-driving mechanism 5 is slidably mounted on the lower part of the support frame 4 and can perform reciprocating linear motion along the cleaning direction. The drive mechanism 6 is connected between the disc brush 2 and the water-driving mechanism 5, and its function is to convert the rotational motion of the disc brush 2 into the reciprocating motion of the water-driving mechanism 5.

[0022] The reciprocating water flow can continuously push the sewage forward, preventing the sewage from lingering in the washing area for a long time.

[0023] A trajectory guide structure is provided between the water-driving mechanism 5 and the support frame 4. The function of the trajectory guide structure is to control the movement posture of the water-driving mechanism 5: when the water-driving mechanism 5 moves forward, it is in the low-position water-pushing station, and the water-driving plate 52 is in contact with the mirror surface; when it moves backward, it switches to the high-position return station, and the water-driving plate 52 is raised and detached from the mirror surface.

[0024] The water-driving mechanism 5 includes a water-driving plate support 51, a water-driving plate 52, and a floating connecting frame 53. The water-driving plate 52 is fixedly installed on the lower end face of the water-driving plate support 51 and directly contacts the mirror surface to push water. The floating connecting frame 53 is fixedly connected to the upper end of the water-driving plate support 51 and serves as a load-bearing structure for sliding and transmission. The lower end of the support frame 4 is provided with a slide rail 41. The floating connecting frame 53 slides and engages with the slide rail 41 in the front-back direction, and can also move up and down under the trajectory constraint of the circulating slide groove 42. The trajectory guiding structure specifically includes a circulating slide groove 42 opened on the side wall of the slide rail 41, and a limiting slider 54 installed on the side of the floating connecting frame 53. The limiting slider 54 is embedded inside the circulating slide groove 42 and can slide along the slide groove trajectory. The circulating chute 42 is a closed, unidirectional circulating trajectory, with an overall staggered waist shape, composed of four trajectory segments connected end to end: a lower pushing straight segment 421, an upper return straight segment 422, an ascending transition segment 423 connecting the left end of the pushing straight segment 421 and the left end of the return straight segment 422, and a descending transition segment 424 connecting the right end of the pushing straight segment 421 and the right end of the return straight segment 422. The pushing straight segment 421 corresponds to the low-position pushing station of the water-driving mechanism 5, and the return straight segment 422 corresponds to the high-position return station of the water-driving mechanism 5.

[0025] When the water-driving mechanism 5 moves forward, the limiting slider 54 slides forward along the water-pushing straight section 421. The water-driving mechanism 5 remains in a low position, and the water-driving plate 52 is tightly attached to the mirror surface, continuously pushing the wastewater generated by the brush 2 forward. When the limiting slider 54 moves to the front end of the water-pushing straight section 421, it enters the rising transition section 423. As the chute trajectory tilts upward, the water-driving mechanism 5 is gradually lifted, and the water-driving plate 52 gradually detaches from the mirror surface. Subsequently, the limiting slider 54 enters the return straight section 422, and the water-driving mechanism 5 remains in a high position and moves backward. During this process, the water-driving plate 52 maintains a distance from the mirror surface and will not bring the wastewater pushed forward back to the washing area. When the limiting slider 54 moves to the rear end of the return straight section 422, it enters the falling transition section 424. The water-driving mechanism 5 gradually falls, and the water-driving plate 52 re-attaches to the mirror surface, entering the next round of water-pushing cycle.

[0026] Through a purely mechanical chute trajectory design, the system automatically switches between "pushing water and adhering, and lifting back" postures. It has a simple structure and stable operation, fundamentally solving the problem of water backflow caused by the reciprocating motion of a fixed scraper. This achieves effective physical isolation between the scrubbing area and wastewater, significantly improving the quality of mirror cleaning.

[0027] The circulating chute 42 is equipped with a one-way anti-reverse structure to force the limiting slider 54 to slide in a single direction, preventing reverse movement. Specifically, the one-way anti-reverse structure includes a first anti-reverse step 425 and a second anti-reverse step 426. The depth of the pushing straight section 421 gradually decreases from left to right, and the depth of the return straight section 422 gradually decreases from right to left. Thus, the first anti-reverse step 425 is formed at the connection between the pushing straight section 421 and the rising transition section 423, with the step surface facing the pushing straight section 421. The second anti-reverse step 426 is formed at the connection between the return straight section 422 and the descending transition section 424, with the step surface facing the return straight section 422.

[0028] When the limiting slider 54 moves from the push water straight section 421 to the entrance of the rising transition section 423, the first anti-reverse step 425 will prevent the slider from reversing back to the push water straight section 421, forcing the slider to only enter the return straight section 422 upward along the rising transition section 423; when the limiting slider 54 moves from the return straight section 422 to the entrance of the descending transition section 424, the second anti-reverse step 426 will prevent the slider from reversing back to the return straight section 422, forcing the slider to only enter the push water straight section 421 downward along the descending transition section 424.

[0029] The two anti-reverse steps form a reliable unidirectional motion constraint, which can avoid the problem of reverse sliding of the slider and trajectory disorder, and ensure that the motion logic of the water driving mechanism 5 is always stable.

[0030] The limiting slider 54 is an elastic slider that can extend and retract in the left-right direction. After assembly, its outer end always elastically abuts against the inner wall of the bottom of the circulating slide 42. Specifically, the elastic slider includes a guide rod 541, a limiting block 542, a sliding pin 543, and an elastic element 544: the inner end of the guide rod 541 is fixedly installed on the side of the floating connecting frame 53, and the limiting block 542 is fixed to the outer end of the guide rod 541; the sliding pin 543 is a sleeve structure with one open end, slidably sleeved on the outside of the guide rod 541 and the limiting block 542; the elastic element 544 is disposed in the internal cavity of the sliding pin 543, with both ends abutting between the outer end face of the limiting block 542 and the inner end face of the sliding pin 543, continuously applying an outward elastic thrust to the sliding pin 543. The elastic element 544 is a helical spring, which has stable elasticity, low cost, and is easy to replace.

[0031] After assembly, the helical spring is in a compressed state, pushing the sliding pin 543 to always extend outward, so that the outer end face of the sliding pin 543 tightly abuts against the bottom of the circulating trough 42; when the sliding pin 543 slides in the push straight section 421 and the return straight section 422, it can adaptively extend and retract along the guide rod 541 to compensate for the gap in real time.

[0032] The drive mechanism 6 includes a drive disk 61, a drive arm 62, an eccentric drive groove 63, and a drive slider 64. The drive disk 61 is coaxially fixedly mounted on the top of the disk brush 2 and rotates synchronously with the disk brush 2; the drive arm 62 is slidably mounted on the support frame 4 in the front-back direction and can perform reciprocating linear motion in the front-back direction; the eccentric drive groove 63 is formed on the upper end face of the drive disk 61 and is arranged in an annular eccentric pattern; the drive slider 64 is fixedly mounted at one end of the drive arm 62 near the disk brush 2 and is slidably embedded inside the eccentric drive groove 63.

[0033] When the hydraulic motor 3 drives the brush 2 to rotate, the drive disk 61 rotates synchronously with the brush 2; the eccentric drive groove 63 moves in a circular motion with the drive disk 61, and applies a thrust to the drive slider 64 through the groove wall, decomposing the circular motion into reciprocating linear motion in the front and back directions, thereby driving the drive arm 62 to slide back and forth along the guide structure of the support frame 4, providing the driving force in the front and back directions for the water driving mechanism 5.

[0034] The top of the floating connecting frame 53 is provided with a lifting slide 531 extending in the vertical direction, and the top of the lifting slide 531 extends inward to form a limit stop 532; the end of the drive arm 62 near the water driving mechanism 5 is provided with a lifting rail 65, the drive arm 62 slides up and down along the lifting slide 531, and the lifting rail 65 slides in cooperation with the limit stop 532.

[0035] When the drive arm 62 reciprocates, its side wall abuts against the side wall of the lifting chute 531, and the lifting track 65 slides in conjunction with the limiting stop bar 532, thereby transmitting the driving force in the forward and backward direction to the floating connecting frame 53, driving the entire water-driving mechanism 5 to move forward and backward. When the water-driving mechanism 5 is lifted and lowered under the constraint of the circulating chute 42, the drive arm 62 can slide freely relative to each other in the vertical direction within the lifting chute 531, automatically compensating for the lifting displacement of the water-driving mechanism 5. The limiting stop bar 532 at the top slides relative to each other along the lifting track 65.

[0036] Displacement compensation is achieved through sliding pairs in the vertical direction, so that the drive arm only outputs driving force in the forward and backward direction, without restricting the lifting and lowering degree of freedom of the water driving mechanism, and the transmission is smooth and without jamming. The water-driving plate bracket 51 has flow-guiding slopes at both ends along its left and right length direction, and the flow-guiding slopes extend obliquely to the outside of the device.

[0037] When the water-driving plate 52 pushes the sewage forward, the sewage flows along the surface of the water-driving plate to both ends, and is smoothly guided to the mirror edge on the outside of the device through the guide slope to be discharged, avoiding the sewage from accumulating and overflowing at the end of the water-driving plate, improving the sewage discharge efficiency, and preventing the sewage from flowing back from the side to the scrubbing area.

[0038] The connection points of the rising transition section 423 with the pushing straight section 421 and the return straight section 422, as well as the connection points of the falling transition section 424 with the pushing straight section 421 and the return straight section 422, are all provided with rounded corners.

[0039] The rounded corner transition can reduce the impact and wear of the limit slider 54 when it passes through the track corner, making the movement smoother and more stable, reducing running noise, and effectively extending the service life of the groove and slider.

[0040] The complete working process of this device is as follows: The hydraulic motor 3 starts, driving the two disc brushes 2 to rotate synchronously and clean the heliostat mirror surface; at the same time, the drive disc 61 on the top of the disc brush 2 rotates synchronously, and through the cooperation of the eccentric drive groove 63 and the drive slider 64, the rotational motion is converted into the back-and-forth reciprocating linear motion of the drive arm 62; the drive arm 62 drives the floating connecting frame 53 to slide back and forth along the slide rail 41 through the lifting slide groove 531. The limiting slider 54 on the side of the floating connecting frame 53 is embedded in the circulating chute 42. As the floating connecting frame 53 moves back and forth, it slides unidirectionally along the trajectory of the circulating chute 42: when moving forward, it travels along the lower water-pushing straight section 421, with the water-driving plate 52 adhering to the mirror surface, continuously pushing the wastewater generated by the brush washing forward; after reaching the front end, it rises along the rising transition section 423 and enters the upper return straight section 422 to return backward. At this time, the water-driving plate 52 rises and detaches from the mirror surface, preventing wastewater from being carried back to the washing area; after reaching the rear end, it falls along the descending transition section 424 and re-enters the water-pushing straight section 421 to start the next round of water-pushing circulation. During operation, the first anti-reverse step 425 and the second anti-reverse step 426 in the circulating chute 42 force the limiting slider 54 to maintain unidirectional circulation, preventing reverse movement; the elastically telescopic limiting slider 54 always adheres to the inner wall of the chute; the lifting chute 531 between the drive arm 62 and the floating connecting frame 53 adaptively compensates for lifting displacement.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A disc brush for cleaning the surface of a heliostat, comprising: A disc brush mounting frame (1), two disc brushes (2) rotatably mounted on the front end of the disc brush mounting frame (1), and a hydraulic motor (3) mounted on the disc brush mounting frame (1) for driving the disc brushes (2) to rotate synchronously, characterized in that: a water-driving device is provided at the front end of the disc brush mounting frame (1) along the cleaning direction; the water-driving device includes a support frame (4), a water-driving mechanism (5), and a driving mechanism (6); the support frame (4) is fixedly connected to the front end of the disc brush mounting frame (1), the water-driving mechanism (5) is slidably connected to the lower part of the support frame (4), and the driving mechanism (6) is driven between the disc brushes (2) and the water-driving mechanism (5) to convert the rotational motion of the disc brushes (2) into the reciprocating motion of the water-driving mechanism (5) along the cleaning direction; a trajectory guide structure is provided between the water-driving mechanism (5) and the support frame (4), the trajectory guide structure being designed to make the water-driving mechanism (5) move forward. When moving, it is in the water-pushing position that is in contact with the mirror surface, and when moving backward, it switches to the return position that is lifted and detached from the mirror surface; the water-driving mechanism (5) includes a water-driving plate bracket (51) and a water-driving plate (52) fixed to the lower end of the water-driving plate bracket (51), and a floating connecting frame (53) fixedly connected to the upper end of the water-driving plate bracket (51); the lower end of the support frame (4) is provided with a slide rail (41) that slides and cooperates with the floating connecting frame (53); the trajectory guide structure includes a circulating slide groove (42) provided on the slide rail (41), and a limiting slider (54) provided on the side of the water-driving mechanism (5); the circulating slide groove (42) is a closed unidirectional trajectory, including a water-pushing straight section (421) located at the lower part, a return straight section (422) located at the upper part, and an upward transition section (423) and a downward transition section (424) that connect the water-pushing straight section (421) and the return straight section (422) at both ends respectively.

2. The heliostat mirror cleaning brush as described in claim 1, characterized in that: The circulating chute (42) is provided with a one-way anti-reverse structure, which includes a first anti-reverse step (425) located at the connection between the push water straight section (421) and the rising transition section (423), and a second anti-reverse step (426) located at the connection between the return straight section (422) and the descending transition section (424), for limiting the reverse sliding of the limiting slider (54).

3. The heliostat mirror cleaning brush as described in claim 1, characterized in that: The limiting slider (54) is an elastic slider that can extend and retract in the left and right direction, and the end of the elastic slider is always in contact with the circulating groove (42).

4. The heliostat mirror cleaning brush as described in claim 3, characterized in that: The elastic slider includes a guide rod (541) fixed to the side of the water-driving mechanism (5), a limiting block (542) fixed to the outer end of the guide rod (541), a sliding pin (543) slidably sleeved on the outside of the guide rod (541) and the limiting block (542), and an elastic element (544) provided in the sliding pin (543); the elastic element (544) abuts against the limiting block (542) and the sliding pin (543) and applies an outward elastic thrust to the sliding pin (543).

5. A disc brush for cleaning a heliostat mirror as described in claim 1, characterized in that: The drive mechanism (6) includes a drive disk (61) coaxially fixed to the top of the disk brush (2) and a drive arm (62) slidably mounted on the support frame (4) in the front-back direction; the end face of the drive disk (61) is provided with an eccentric drive groove (63), and one end of the drive arm (62) is provided with a drive slider (64) slidably embedded in the eccentric drive groove (63); when the disk brush (2) rotates, the drive arm (62) is driven to reciprocate in the front-back direction through the eccentric drive groove (63).

6. The heliostat mirror cleaning brush as described in claim 5, characterized in that: The top of the water-driving mechanism (5) is provided with a lifting slide (531) extending in the vertical direction, and the top of the lifting slide (531) is provided with a limiting stop (532); the other end of the driving arm (62) is slidably engaged with the lifting slide (531) and is provided with a lifting track (65) inside that is slidably engaged with the limiting stop (532).

7. A disc brush for cleaning a heliostat mirror as described in claim 1, characterized in that: The water-driving plate bracket (51) has guide slopes at both ends along its length direction extending to the left and right.

8. A disc brush for cleaning a heliostat mirror as described in claim 1, characterized in that: The connection points of the rising transition section (423), the falling transition section (424), the pushing straight section (421), and the return straight section (422) are all provided with rounded corner transitions.

9. A disc brush for cleaning a heliostat mirror as described in claim 4, characterized in that: The elastic element (544) is a helical spring.

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