Photovoltaic panel floating dust cleaning device

Abstract

The utility model belongs to the technical field of photovoltaic panel dust removal, and discloses a photovoltaic panel floating dust cleaning device which comprises a shell, a spraying assembly, a compression assembly and a driving assembly, and a dust suction opening is formed in one side of the shell; a dust collection chamber communicated with the dust collection port is arranged in the shell, a dust collection fan and a sewage draining exit are arranged on one side of the dust collection chamber at intervals, and a sewage draining valve is hinged to the sewage draining exit; the spraying assembly is arranged on one side of the dust collecting chamber, the compression assembly is arranged on one side of the dust collecting chamber relative to the blow-down valve, and the driving assembly is located at the bottom of the shell. In the process that the running assembly drives the device to suck floating dust into the dust collecting chamber along the surface of the photovoltaic panel, the floating dust is humidified by water sprayed by the spraying assembly and concentrated at the bottom of the dust collecting chamber, the compression assembly gradually compresses the muddy dust into soil blocks with large density, and at the moment, the soil blocks push open the blow-down valve outwards under the pushing effect, and the dust collecting chamber is closed. And the floating dust is discharged from the open drain outlet and falls onto the ground below the edge of the photovoltaic panel, so that the floating dust is prevented from polluting the adjacent photovoltaic panel.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic panel dust removal, and in particular relates to a photovoltaic panel floating dust cleaning device. Background Art

[0002] Photovoltaic panels have good power generation efficiency. Energy-saving power generation through the establishment of photovoltaic power stations is one of the promising energy development projects in the northwest region. However, due to climate and geographical reasons, the dust content in the air is difficult to control. Once the surface of the photovoltaic panels is covered with a layer of dust, its power generation efficiency will be greatly reduced. However, there are a large number of photovoltaic panels, and the heat on the surface of the photovoltaic panels is high, so it is not suitable to perform dust removal by manual operation.

[0003] In the prior art, a Chinese invention with publication number CN114308963B discloses a photovoltaic panel with dust removal effect for use in the desert and a dust removal mechanism, including a mounting plate, a dust removal mechanism, a driving mechanism, and a shielding mechanism; by arranging the dust removal mechanism and the driving mechanism on the mounting plate, the rotating shaft drives the bristles to slide while rotating, thereby completing the cleaning and dust removal of the entire photovoltaic panel; by arranging the shielding mechanism at the upper end of the mounting plate, and arranging a box body capable of covering the dust removal mechanism and a shielding plate capable of shielding the give way groove in the shielding mechanism, the bristles that are not in a working state are covered to prevent flying sand in the desert from falling into the bristles and affecting the cleaning and dust removal effect.

[0004] Although the device can clean the floating dust on a single photovoltaic panel, considering the limited distance between photovoltaic panels, the bristles of the device are likely to lift up the floating dust during the rotating dust removal process. The lifted floating dust will be affected by the airflow and cause pollution to the adjacent photovoltaic panels, thus increasing the dust removal times of other dust removal mechanisms. Summary of the invention

[0005] Based on the above background technology needs, the utility model discloses a photovoltaic panel dust cleaning device, which can not only remove the dust on the surface of the photovoltaic panel, but also collect and process the dust to prevent the dust from scattering and polluting the adjacent photovoltaic panels.

[0006] In order to achieve the above object, the technical solution of the utility model is:

[0007] A photovoltaic panel dust cleaning device comprises a shell, a spray assembly, a compression assembly and a travel assembly, wherein a dust suction port is provided on one side of the shell; a dust collecting chamber is arranged in the shell and is connected to the dust suction port, a dust suction fan and a sewage outlet are arranged at intervals on one side of the dust collecting chamber, and a sewage outlet is hingedly connected to the sewage outlet; the spray assembly is arranged on one side of the dust collecting chamber for wetting the dust in the dust collecting chamber; the compression assembly is arranged on one side of the dust collecting chamber relative to the sewage outlet valve for compressing the dust in the dust collecting chamber; the travel assembly is arranged on one side of the shell, and the travel assembly is used to drive the shell to travel along the surface of the photovoltaic panel.

[0008] Preferably, the compression assembly includes an automatic telescopic cylinder and a compression plate, the static end of the automatic telescopic cylinder is fixed to one side of the dust collecting chamber relative to the sewage valve, the moving end of the automatic telescopic cylinder is connected to one side of the compression plate, and the automatic telescopic cylinder is used to drive the compression plate in a straight line to approach or move away from the sewage valve.

[0009] Preferably, a stopper is provided on the side of the compression plate opposite to the sewage valve.

[0010] Preferably, a pressure switch and an electromagnetic suction lock are provided on the side of the sewage valve opposite to the compression plate, the pressure-bearing part of the pressure switch faces the compression plate, and the pressure switch is electrically connected to the electromagnetic suction lock. When the pressure-bearing part of the pressure switch is pressurized and closed, the electromagnetic suction lock is released from the suction state.

[0011] Preferably, the spray assembly includes an electric spray head and a water tank, the water tank is connected to the dust collecting chamber through the electric spray head, and the electric spray head is used to spray water in the water tank into the dust collecting chamber.

[0012] Preferably, the spray assembly also includes a dust concentration detector and an electric nozzle controller, the dust concentration detector is arranged in the dust collecting chamber and is electrically connected to the electric nozzle controller, the electric nozzle controller is electrically connected to the electric nozzle, and the electric nozzle controller is used to control the water spraying amount of the electric nozzle.

[0013] Preferably, the shell is rotatably provided with a roller brush at the dust suction port, and the roller brush is used to absorb floating dust on the surface of the photovoltaic panel.

[0014] Preferably, the traveling component includes a driving motor and several pairs of limiting rollers, the several pairs of limiting rollers are rotatably connected to the shell, and the driving motor is at least partially transmission-connected to the limiting rollers; a limiting groove is provided on one side of the wheel surface of the limiting roller, and the limiting roller is in rolling contact with the side edge of the photovoltaic panel through the limiting groove.

[0015] By adopting the above technical solution, compared with the prior art, the utility model has at least the following beneficial effects:

[0016] During the movement of the shell along the surface of the photovoltaic panel, the dust collecting chamber absorbs and stores pollutants such as floating dust and gravel on the surface of the photovoltaic panel through the dust suction port, so as to prevent dust from being scattered onto other photovoltaic panels during the cleaning operation; during this period, the spray component sprays water into the dust collecting chamber appropriately to increase the humidity, so that the moistened dust can be concentrated at the bottom of the dust collecting chamber, and the compression component pushes and compresses the wet dust toward the drain valve. As the amount of dust gradually increases, the muddy dust is gradually compressed into a soil block with a larger density. Under the pushing action of the compression component, the soil block is turned upward around the hinged part against the drain valve, thereby opening the drain port to allow the soil block to fall from the edge of the photovoltaic panel. During the falling process, the soil block is not easily affected by the airflow and contaminates the adjacent photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional view of the structure of a photovoltaic panel dust cleaning device in one embodiment.

[0018] Figure 2 Schematic diagram of the partial structure of a photovoltaic panel dust cleaning device in one embodiment.

[0019] Figure 3 It is a partial enlarged schematic diagram of a sewage discharge valve in one embodiment.

[0020] Figure 4 It is a partial enlarged schematic diagram of a spray assembly in one embodiment.

[0021] Figure 5 Schematic diagram of the working state of a photovoltaic panel dust cleaning device in one embodiment.

[0022] In the figure: housing 10, dust suction port 11, roller brush 111, dust collecting chamber 12, dust suction fan 121, sewage outlet 122, sewage valve 123, pressure switch 124, electromagnetic suction lock 125, rebound hinge 126, spray assembly 13, electric nozzle 131, water tank 132, dust concentration detector 133, electric nozzle controller 134, compression assembly 14, automatic telescopic cylinder 141, compression plate 142, block 143, travel assembly 15, drive motor 151, limit roller 152, limit groove 1521. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0024] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "inner", "outer", "left", "right", "front", "back", "top", "bottom" and the like indicating directions or positional relationships, they are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The following is combined with Figure 1-5 The utility model is further described in detail with reference to specific embodiments.

[0026] This embodiment discloses a photovoltaic panel dust cleaning device. Figure 1 As shown, it includes a shell 10, a spray component 13, a compression component 14 and a travel component 15, wherein a dust suction port 11 is arranged on a side of the shell 10 that is close to the surface of the photovoltaic panel; a dust collecting chamber 12 is arranged inside the shell 10 away from the dust suction port 11, and the dust collecting chamber 12 is connected with the dust suction port 11 through a pipeline, a dust suction fan 121 is arranged on the upper part of the side of the dust collecting chamber 12 away from the dust suction port, and a sewage outlet 122 is arranged on the lower part, and a sewage outlet 122 is hinged with a sewage valve 123; the spray component 13 is arranged on one side of the dust collecting chamber 12, and is used to wet the floating dust collected in the dust collecting chamber 12; the compression component 14 is arranged on the side of the dust collecting chamber 12 opposite to the sewage outlet valve 123, and is used to compress and form the wetted floating dust in the dust collecting chamber 12; the travel component 15 is arranged on the outside of the shell, and the travel component 15 is at least partially in contact with the photovoltaic panel, and the travel component 15 is used to drive the shell 10 to travel along the surface of the photovoltaic panel.

[0027] Specifically, a sensor for measuring the amount of dust, such as an infrared sensor, an acoustic sensor or a photoelectric sensor, may be arranged in the dust collecting chamber 12. After the sensor and the compression assembly form a control loop, the sensor may control the compression assembly to compress the dust by detecting the amount of dust in the dust collecting chamber 12 or the remaining capacity of the dust collecting chamber; the compression assembly 14 compresses and shapes the dust by pushing the dust toward the drain valve 123; the drain port 122 and the drain valve 123 are preferably arranged on the side of the dust collecting chamber 12 close to the edge of the photovoltaic panel; Figure 3 As shown, the upper side of the sewage valve 123 is hinged to the upper side of the sewage valve 122 through a rebound hinge 126, and the sewage valve 123 opens outward relative to the dust collecting chamber 12.

[0028] When using the device, after the shell 10 is placed on the photovoltaic panel, the travel component 15 contacts the opposite sides of the photovoltaic panel in the length direction, so that the lower side of the shell 10 can cover part of the upper surface of the photovoltaic panel; the dust suction fan 121 is started, and the travel component 15 drives the device to move along the length direction of the photovoltaic panel. During the movement, the dust suction port 11 sucks the floating dust on the surface of the photovoltaic panel into the dust collecting chamber 12 for temporary storage to prevent the dust from being scattered on other photovoltaic panels; during the dust collection process, the spray component 13 sprays water into the dust collecting chamber 12 to increase humidity so that the moistened dust can be concentrated at the bottom of the dust collecting chamber 12. When a certain amount of dust is collected in the dust collecting chamber 12, The compression component 14 pushes and compresses the wet dust toward the drain valve 123. As the amount of dust gradually increases, the muddy dust is gradually compressed into a soil block with a relatively large density. At this time, the soil block is pushed upward around the hinge part against the drain valve 123 by the pushing action of the compression component 14, thereby opening the drain port 122. The soil block is also discharged from the drain port 122 and falls to the ground below the edge of the photovoltaic panel. The fallen soil block is not easily affected by the airflow and contaminates the adjacent photovoltaic panel. After the soil block is discharged, the drain valve 123 is automatically closed by the rebound hinge 126 to allow the dust collecting chamber 12 to continue to absorb dust.

[0029] Furthermore, the compression assembly 14 includes an automatic telescopic cylinder 141 and a compression plate 142, wherein the cylinder body portion (equivalent to the static end) of the automatic telescopic cylinder 141 is arranged outside one side of the dust collecting chamber 12 relative to the sewage valve 123, and the telescopic portion (equivalent to the moving end) of the automatic telescopic cylinder 141 passes through the side wall separating the dust collecting chamber 12 and the shell 10 and is connected to the compression plate 142 at one end extending into the dust collecting chamber 12. The automatic telescopic cylinder 141 is used to drive the compression plate 142 along a straight line to move closer to or away from the sewage valve 123, thereby achieving the effect of compressing dust.

[0030] Specifically, the bottom and side surfaces of the compression plate 142 can fit the bottom surface of the dust collecting chamber 12 and part of the side surfaces adjacent to the bottom surface; when the telescopic part of the automatic telescopic cylinder 141 is extended to the longest distance, the compression plate 142 can approach or reach the sewage outlet 122, so that the compression plate 142 can push the soil blocks out of the sewage outlet 122.

[0031] Furthermore, a stopper 143 is provided on one side of the compression plate 142 opposite to the sewage valve 123 .

[0032] Specifically, there is at least one stopper 143, which is in a rectangular parallelepiped shape and is fixedly connected to the upper part of the compression plate 142 that contacts the dust along the length direction of the compression plate 142. As the amount of dust collected gradually increases, the stopper 143 can prevent the dust from overflowing the compression plate 142 during the compression process, and can cooperate with the compression plate 142 to shape the soil blocks formed by the dust, so that the formed soil blocks will not be easily broken in the process of pushing open the sewage valve 123.

[0033] Furthermore, if Figure 3 As shown, in order to prevent the sewage valve 123 from accidentally opening during the dust compression process, a pressure switch 124 and an electromagnetic suction lock 125 are provided on the side of the sewage valve 123 relative to the compression plate 142, the pressure-bearing part of the pressure switch 124 faces the compression plate 123, and the pressure switch 124 and the electromagnetic suction lock 125 are electrically connected to form a control loop; when the pressure-bearing part of the pressure switch 124 is closed after being subjected to corresponding pressure, the electromagnetic suction lock 125 is released from the suction state.

[0034] Specifically, the electromagnetic suction lock 125 includes at least two parts, namely an electromagnetic attraction part and an attracted part, wherein the electromagnetic attraction part is arranged on the inner side of the sewage valve 123 and is electrically connected to the contacts of the pressure switch 124, and the attracted part is arranged on the sewage outlet 122 side relative to the electromagnetic attraction part; when the pressure switch 124 is disconnected, the normal state of the electromagnetic suction lock 125 is to maintain the attracted state, that is, the sewage valve 123 is in a closed and locked state; after adjusting the closing pressure of the pressure-receiving part of the pressure switch 124 to an appropriate value, as the dust is gradually compacted, when the density and volume of the formed soil blocks reach the threshold value, the soil blocks trigger the pressure switch 124 under the push of the compression plate 142, and at this time the pressure switch 124 closes and controls the electromagnetic suction lock 125 to release the attracted state, and the sewage valve 123 is pushed upward by the soil blocks, so that the soil blocks can be discharged from the dust collecting chamber 12.

[0035] Furthermore, if Figure 4 As shown, the spray assembly 13 includes an electric spray head 131 and a water tank 132 . The water tank 132 is connected to the interior of the dust collecting chamber 12 through the electric spray head 131 . The electric spray head 131 is used to spray water in the water tank 132 into the dust collecting chamber 12 .

[0036] Specifically, the water tank 132 is arranged on one side of the shell 10 adjacent to the dust collecting chamber 12, the nozzle of the electric nozzle 131 passes through the spacing part between the dust collecting chamber 12 and the water tank 132 and extends into the side of the dust collecting chamber 12 adjacent to the dust suction port 11, and the water suction pipe of the electric nozzle 131 extends into the water tank 132; the water filling port of the water tank 132 extends to the outside of the shell to facilitate water replenishment.

[0037] During use of the above device, after the electric nozzle 131 is started, it absorbs water in the water tank 132 and sprays it out after being pressurized by the nozzle, and the formed water mist can fully wet the floating dust in the dust collecting chamber 12 during the dust collection process.

[0038] Furthermore, the spray assembly 13 also includes a dust concentration detector 133 and an electric nozzle controller 134. The dust concentration detector 133 is arranged in the dust collecting chamber 12 and is electrically connected to the electric nozzle controller 134. The electric nozzle controller 134 is electrically connected to the electric nozzle 131. The electric nozzle controller 134 is used to control the water spraying amount of the electric nozzle 131.

[0039] Specifically, the detection part of the dust concentration detector 133 can detect the dust concentration during the dust collection process in the dust collecting chamber 12. After the electrical signal of the concentration value is acquired by the electric nozzle controller 134 in real time, the electric nozzle controller 134 adjusts the pressure or water pumping volume of the electric nozzle 131 through the electrical signal to achieve the purpose of controlling the water spraying volume of the electric nozzle 131.

[0040] When using the above device, when the dust concentration sucked into the dust collecting chamber 12 decreases, the electric nozzle controller 134 controls the electric nozzle 131 to reduce the amount of water sprayed; conversely, when the dust concentration sucked into the dust collecting chamber 12 increases, the electric nozzle controller 134 controls the electric nozzle 131 to increase the amount of water sprayed, so that the dust entering the dust collecting chamber 12 can always be moistened with a corresponding amount of water, thereby avoiding the dust being insufficiently or excessively wet and being inconvenient to be compressed and shaped, and achieving the purpose of saving water.

[0041] Furthermore, if Figure 1 As shown, the housing 10 is provided with a roller brush 111 at the dust suction port 11 via a rotating shaft, and the roller brush 111 is used to absorb floating dust on the surface of the photovoltaic panel.

[0042] Specifically, a rotating shaft is provided at the dust suction port 11 of the shell 10 along the length direction of the dust suction port 11, and a roller brush 111 is sleeved on the rotating shaft. The outer side of the roller brush 111 is covered with bristles that can form an adsorption effect through static electricity, and the bristles can contact the surface of the photovoltaic panel during rotation.

[0043] When using the above device, as the shell 10 moves along the surface of the photovoltaic panel, the roller brush 111 rolls on the surface of the photovoltaic panel, and the floating dust is adsorbed on the surface of the roller brush through the bristles, and then sucked into the dust collecting chamber 12 by the suction port 11; the roller brush 111 can squeeze and wipe off the pollutants adhering to the surface of the photovoltaic panel during the rolling process, thereby improving the cleaning effect of the above photovoltaic panel floating dust cleaning device.

[0044] Furthermore, if Figure 2 As shown, the travel component 15 includes a driving motor 151 and a plurality of pairs of limiting rollers 152. The limiting rollers 152 are rotationally connected to the housing 10 via rollers, and the driving motor 151 is transmission-connected to the rollers of the limiting rollers 152. As shown in the figure, a limiting groove 1521 is provided on one side of the wheel surface of the limiting roller 152, and the limiting roller 152 is in rolling contact with the side of the photovoltaic panel via the limiting groove 1521.

[0045] Specifically, the limiting roller 152 is rotationally connected to the shell 10 through a roller arranged along the height direction, and the limiting rollers 152 are evenly distributed on the opposite sides of the shell 10; the driving motor 151 is arranged in the shell 10, and one end of the driving shaft of the driving motor 151 is fixedly connected to the first bevel gear, and the roller of any limiting roller 152 passes through one end of the shell and is fixedly connected to the second bevel gear, and the first bevel gear is vertically meshed with the second bevel gear, so that the driving motor 151 can drive the limiting roller 152 to rotate; the limiting groove 1521 is opened at the center of the wheel surface of all limiting rollers 152, and the width of the limiting groove 1521 can enable the limiting wheel 152 to be clamped on the opposite side edges in the length direction of the photovoltaic panel.

[0046] like Figure 5 As shown, when the above device is used, the two opposite sides in the length direction of the photovoltaic panel serve as tracks for the limiting rollers 152 to roll on. The limiting rollers 152 carry the photovoltaic panel dust cleaning device and do not contact the surface of the photovoltaic panel during movement, thereby avoiding scratches and wear on the surface of the photovoltaic panel.

[0047] Through the above implementation, at least the following technical effects are achieved:

[0048] As the shell 10 moves along the surface of the photovoltaic panel, the dust collecting chamber 12 absorbs and collects pollutants such as dust and gravel on the surface of the photovoltaic panel through the dust suction port 11 to prevent dust from being scattered onto other photovoltaic panels during the cleaning process; during this period, the spray component 13 sprays water appropriately into the dust collecting chamber 12 to increase humidity, so that the moistened dust can be concentrated at the bottom of the dust collecting chamber 12, and the compression component 14 pushes and compresses the wet dust toward the drain valve 123. As the amount of dust gradually increases, the muddy dust is gradually compressed into a soil block with a larger density. Under the pushing action of the compression component 14, the soil block is turned upward around the hinged part against the drain valve 123, thereby opening the drain port 122 to allow the soil block to fall from the edge of the photovoltaic panel. During the falling process, the soil block is not easily affected by the airflow and contaminates the adjacent photovoltaic panel.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic panel dust cleaning device, used to clean dust along the surface of a photovoltaic panel, characterized in that: include: A shell, one side of which is provided with a dust suction port; a dust collecting chamber is arranged in the shell and is connected to the dust suction port, a dust suction fan and a sewage outlet are arranged at intervals on one side of the dust collecting chamber, and a sewage valve is hinged at the sewage outlet; A spray assembly, the spray assembly is arranged at one side of the dust collecting chamber and is used to wet the floating dust in the dust collecting chamber; A compression component, which is arranged at one side of the dust collecting chamber relative to the sewage discharge valve and is used to compress the floating dust in the dust collecting chamber; as well as A traveling component is arranged on one side of the shell, and is used to drive the shell to travel along the surface of the photovoltaic panel.

2. The photovoltaic panel dust cleaning device according to claim 1, characterized in that: The compression assembly includes an automatic telescopic cylinder and a compression plate. The static end of the automatic telescopic cylinder is fixed to one side of the dust collecting chamber relative to the sewage discharge valve, and the moving end of the automatic telescopic cylinder is connected to one side of the compression plate. The automatic telescopic cylinder is used to drive the compression plate along a straight line to approach or move away from the sewage discharge valve.

3. The photovoltaic panel dust cleaning device according to claim 2, characterized in that: A stopper is arranged on one side of the compression plate opposite to the sewage discharge valve.

4. The photovoltaic panel dust cleaning device according to claim 3, characterized in that: A pressure switch and an electromagnetic suction lock are provided on the side of the sewage valve opposite to the compression plate. The pressure-bearing part of the pressure switch faces the compression plate, and the pressure switch is electrically connected to the electromagnetic suction lock. When the pressure-bearing part of the pressure switch is closed under pressure, the electromagnetic suction lock is released from the suction state.

5. The photovoltaic panel dust cleaning device according to claim 1, characterized in that: The spray assembly includes an electric spray head and a water tank. The water tank is connected to the dust collecting chamber through the electric spray head. The electric spray head is used to spray water in the water tank into the dust collecting chamber.

6. The photovoltaic panel dust cleaning device according to claim 5, characterized in that: The spray assembly also includes a dust concentration detector and an electric nozzle controller. The dust concentration detector is arranged in the dust collecting chamber and is electrically connected to the electric nozzle controller. The electric nozzle controller is electrically connected to the electric nozzle. The electric nozzle controller is used to control the water spraying amount of the electric nozzle.

7. The photovoltaic panel dust cleaning device according to claim 1, characterized in that: The shell is rotatably provided with a rolling brush at the dust suction port, and the rolling brush is used to absorb floating dust on the surface of the photovoltaic panel.

8. The photovoltaic panel dust cleaning device according to claim 1, characterized in that: The traveling component includes a driving motor and several pairs of limiting rollers, the several pairs of limiting rollers are rotatably connected to the shell, and the driving motor is at least partially connected to the limiting rollers in a transmission manner; a limiting groove is provided on one side of the wheel surface of the limiting roller, and the limiting roller is in rolling contact with the side of the photovoltaic panel through the limiting groove.

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