Environment-friendly workshop skylight

By introducing a flip-up drive mechanism and a hinged protective plate design into the factory skylight, the problem of water seepage during rainy days was solved, and the sealing and waterproof performance were improved. Furthermore, the air quality was ensured through the filtration and cleaning mechanism, and the service life of the filter components was extended.

CN223724032UActive Publication Date: 2025-12-26ANHUI UNITED VENTILATION EQUIP CO LTD
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Patent Information

Application Number
CN202520263132.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-12-26
Estimated Expiration
2035-02-19

AI Technical Summary

Technical Problem

The existing factory skylights cannot be effectively closed during rainy weather, causing rainwater to seep into the factory and damage equipment and raw materials.

Method used

An environmentally friendly factory skylight was designed, which adopts a hinged design of a flip-drive mechanism and a protective plate. The opening and closing of the protective plate is controlled by hydraulic rods and supports to ensure sealing and waterproof performance when closed. It is also equipped with a filter plate and a cleaning mechanism to purify the air.

Benefits of technology

It achieves excellent sealing and waterproof performance in rainy weather, preventing rainwater from seeping in, while purifying the air in ventilated conditions, thus extending the service life of the filter components.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an environment-friendly factory building skylight which comprises a skylight body, a protective plate used for sealing and preventing water is hinged to the skylight body, and a filter plate used for filtering air exhausted from a factory building is fixedly arranged in the skylight body. A turnover driving mechanism used for driving the protection plate to be opened and closed is arranged on the skylight body and comprises a sliding block arranged on the inner side wall of the skylight body in a sliding mode and a supporting rod, and the two ends of the supporting rod are hinged to the side wall of the sliding block and the side wall of the protection plate correspondingly. The problems that in the prior art, a skylight body cannot be closed when needed, and rainwater can easily permeate into a plant through an opening of the skylight in rainy days are solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to factory skylight technical field, specifically, relate to a kind of environment-friendly factory skylight. BACKGROUND

[0002] When the equipment in factory runs, a lot of dust, noise and heat are often generated, resulting in very hot and air pollution in the working environment of factory. Over time, it will endanger the physical and mental health of workers in factory. In related technology, one of the ways to improve the working environment in factory is to install skylight on the ceiling of factory. Skylight can increase the mobility of air in factory, and exclude the dirty air, so as to keep the air fresh in factory.

[0003] Through retrieval, China patent application CN217537590U discloses an environment-friendly factory skylight. The skylight body can be used for lighting and ventilation. During the ventilation process, the filter assembly filters the air discharged from the factory, reducing the pollution caused by the dust in the discharged air entering the atmosphere. The cleaning mechanism is used to clean the filter assembly, making the filter assembly durable and reducing the waste caused by frequent replacement of the filter assembly.

[0004] However, when implementing the above technical solution, there are still the following technical problems: the skylight body cannot be closed when needed, resulting in that rainwater can easily penetrate into the factory interior through the opening of the skylight on rainy days, not only causing dampness and water accumulation inside the factory, but also possibly damaging the equipment, products and raw materials stored in the factory.

[0005] Therefore, it is an urgent problem for the utility model to provide an environment-friendly factory skylight that can quickly adjust the ventilation state in the factory during use, ensure good sealing and waterproof performance of the skylight in the closed state, and effectively prevent rainwater from penetrating into the factory interior. SUMMARY

[0006] To solve the above technical problems, the utility model provides an environment-friendly factory skylight that can quickly adjust the ventilation state in the factory during use, ensure good sealing and waterproof performance of the skylight in the closed state, and effectively prevent rainwater from penetrating into the factory interior.

[0007] To achieve the above purpose, the utility model provides an environment-friendly factory skylight, which comprises a skylight body, a protective plate for sealing and waterproofing is hinged to the skylight body, and a filter plate for filtering the air discharged from the factory is fixed in the skylight body.

[0008] The sunroof body is provided with a turnover driving mechanism for driving the opening and closing of the protective plate, the turnover driving mechanism comprising a sliding block slidingly arranged on the inner side wall of the sunroof body and a support rod hingedly arranged at both ends of the sliding block and the side wall of the protective plate.

[0009] Preferably, the turnover driving mechanism further comprises a hydraulic rod and a support; the inner side wall on one side of the sunroof body is fixedly provided with the hydraulic rod, the output end of the hydraulic rod is horizontally arranged and the sliding block is fixedly arranged on the output end of the hydraulic rod, the inner side wall of the sunroof body is provided with a limiting groove for the sliding block, and the other side wall of the sunroof body is provided with a support for supporting the protective plate.

[0010] Preferably, the support comprises a connecting rod and a sliding block; the other side wall of the sunroof body is provided with a sliding groove, the sliding groove is slidingly provided with the sliding block, the sliding block is fixedly connected with the sliding block through the connecting rod, and the support rod hingedly arranged at one end of the side wall of the protective plate is hingedly arranged on the sliding block.

[0011] Preferably, the sunroof body is provided with a cleaning mechanism for contacting the surface of the filter plate for cleaning.

[0012] Preferably, the cleaning mechanism comprises a rotating shaft, a cleaning roller, a mounting block and a driving member; wherein,

[0013] The inner side wall of the sunroof body is provided with a strip-shaped groove, the mounting block is slidingly arranged in the strip-shaped groove, the rotating shaft is rotatably arranged on the mounting block, the cleaning roller in contact with the surface of the filter plate is fixedly sleeved on the rotating shaft, and the driving member for driving the cleaning roller to reciprocatingly move while also self-rotating is fixedly arranged on the sunroof body.

[0014] Preferably, the driving member comprises a rotary motor, a reciprocating screw rod, a threaded block and a self-rotating member; wherein,

[0015] The rotary motor is fixedly arranged on the inner side wall of the sunroof body, the output shaft of the rotary motor is horizontally arranged and the top end of the output shaft is fixedly provided with the reciprocating screw rod through a shaft coupler, the threaded block is threadedly sleeved on the reciprocating screw rod, the mounting block is fixedly arranged on the threaded block, and the self-rotating member for driving the rotating of the cleaning roller while the cleaning roller reciprocatingly moves is fixedly arranged on the sunroof body.

[0016] Preferably, the self-rotating member comprises a rack and a gear; the rack is fixedly arranged on the inner side wall of the sunroof body, and the gear is fixedly sleeved on the rotating shaft and engaged with the rack.

[0017] Preferably, the protective plate is fixedly provided with a solar panel electrically connected with the hydraulic rod.

[0018] According to the above technical scheme, the beneficial effect of the environment-friendly factory skylight in use is that: in rainy days, the environment-friendly factory skylight is in a closed state, the protection plate is connected with the skylight body in a hinged mode, the sealing property and waterproof property of the skylight are ensured, when the skylight needs to be opened for ventilation or exhaust, the turnover driving mechanism starts to work, the sliding block slides on the inner side wall of the skylight body, with the sliding of the sliding block, the one end of the supporting rod hinged with the sliding block is displaced, and the other end hinged with the protection plate rotates the protection plate around the hinge point, the protection plate is gradually opened, until the predetermined opening angle is reached, allowing air to flow through the skylight. In the process of opening the skylight or after the skylight is opened, the air in the factory is discharged through the skylight, the discharged air first passes through the filter plate, the filter plate can remove dust, particulate matter and other pollutants in the air, so as to purify the discharged air, when the skylight needs to be closed, the turnover driving mechanism works reversely, the sliding block slides back to the original position, the supporting rod drives the protection plate to rotate reversely around the hinge point, the protection plate is gradually closed, until the protection plate completely adheres to the skylight body, the sealing property and waterproof property of the skylight are restored. The hinge design between the protection plate and the skylight body and the accurate control of the turnover driving mechanism ensure the good sealing property and waterproof performance of the skylight in the closed state, effectively preventing rainwater from penetrating into the factory.

[0019] Other features and advantages of the present application will be further illustrated in the following detailed description of the embodiments; and the parts not involved in the present application are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and together with the following detailed description, serve to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0021] Figure 1 is a schematic view of the three-dimensional structure of the environment-friendly factory skylight provided in a preferred embodiment Figure One ;

[0022] Figure 2 is a schematic view of the three-dimensional structure of the environment-friendly factory skylight provided in a preferred embodiment Figure Two ;

[0023] Figure 3 is a schematic view of the three-dimensional structure of the environment-friendly factory skylight provided in a preferred embodiment Figure Three ;

[0024] Figure 4 is a schematic view of the three-dimensional structure of the environment-friendly factory skylight provided in a preferred embodiment

[0025] Figure 5It is a partial perspective structure schematic view of the environment-friendly factory skylight driving member provided in a preferred embodiment;

[0026] Figure 6 It is Figure 5 The enlarged view of the perspective structure at A in the figure.

[0027] Explanation of reference signs

[0028] 100, skylight body; 101, protective plate; 102, solar panel; 103, filter plate; 200, turnover driving mechanism; 201, sliding groove; 202, hydraulic rod; 203, sliding block; 204, limiting groove; 205, support rod; 206, connecting rod; 207, sliding block; 300, cleaning mechanism; 301, rotating shaft; 302, cleaning roller; 303, rotary motor; 304, reciprocating screw rod; 305, rack; 306, threaded block; 307, gear; 308, strip-shaped groove; 309, mounting block. DETAILED DESCRIPTION

[0029] The specific embodiments of the utility model are described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0030] In the utility model, under the condition that no opposite description is made, the orientation words contained in the terms such as 'up, down, inside and outside' only represent the orientation of the term in the normal use state, or the common name understood by the person skilled in the art, and should not be regarded as the limitation of the term.

[0031] Referring to Figures 1-6 The environment-friendly factory skylight shown in the figure, the skylight body 100 is hinged with a protective plate 101 for sealing and waterproofing, and a filter plate 103 for filtering the air discharged in the factory is fixedly arranged in the skylight body 100; wherein,

[0032] The skylight body 100 is provided with a turnover driving mechanism 200 for driving the protective plate 101 to open and close, the turnover driving mechanism 200 comprises a sliding block 203 slidingly arranged on the inner side wall of the skylight body 100 and a support rod 205 hingedly arranged at both ends of the sliding block 203 and the side wall of the protective plate 101.

[0033] In the above scheme, in rainy days, the environment-friendly factory skylight is in a closed state, the protective plate 101 is connected with the skylight body 100 through a hinged manner, the sealing and waterproof performance of the skylight is ensured, when the skylight needs to be opened for ventilation or exhaust, the turnover driving mechanism 200 starts to work, the sliding block 203 slides on the inner side wall of the skylight body 100, with the sliding of the sliding block 203, the end of the supporting rod 205 hinged with the sliding block 203 is displaced, and the other end hinged with the protective plate 101 pushes the protective plate 101 to rotate around the hinge point, the protective plate 101 is gradually opened until a predetermined opening angle is reached, allowing air to flow through the skylight. During the opening of the skylight or after the opening, the air in the factory is discharged through the skylight, the discharged air first passes through the filter plate 103, the filter plate 103 can remove dust, particulate matter and other pollutants in the air, thereby purifying the discharged air, when the skylight needs to be closed, the turnover driving mechanism 200 works in reverse, the sliding block 203 slides back to the original position, the supporting rod 205 drives the protective plate 101 to rotate reversely around the hinge point, the protective plate 101 is gradually closed until it completely fits the skylight body 100, the sealing and waterproof performance of the skylight is restored. The hinge design between the protective plate 101 and the skylight body 100 and the precise control of the turnover driving mechanism 200 ensure the good sealing and waterproof performance of the skylight in the closed state, effectively preventing rainwater from penetrating into the factory.

[0034] Referring to Figures 1-2 As shown in the figure, the turnover driving mechanism 200 further comprises a hydraulic rod 202 and a supporting piece; the hydraulic rod 202 is fixed on one side of the inner side wall of the skylight body 100, the output end of the hydraulic rod 202 is horizontally arranged and the sliding block 203 is fixed on the output end of the hydraulic rod 202, the inner side wall of the skylight body 100 is provided with a limiting groove 204 for the sliding of the sliding block 203, and the other side wall of the skylight body 100 is provided with a supporting piece for supporting the protective plate 101.

[0035] In the above scheme, when the skylight needs to be opened, the hydraulic rod 202 starts to elongate, the sliding block 203 slides horizontally in the limiting groove 204 with the output end of the hydraulic rod 202, the sliding block 203 drives one end of the supporting rod 205 to move, thereby pushing the protective plate 101 to rotate around the hinge point and open, after the protective plate 101 is completely opened, the hydraulic rod 202 remains in the elongated state, the sliding block 203 and the supporting rod 205 jointly maintain the opening position of the protective plate 101, and the supporting piece on the other side plays a role in auxiliary supporting and stabilizing the protective plate 101.

[0036] Referring to Figures 1-2As shown, the support piece comprises a connecting rod 206 and a sliding block 207; a sliding groove 201 is formed on the other side wall of the sunroof body 100, the sliding block 207 is slidably arranged in the sliding groove 201, the sliding block 203 is fixedly connected with the sliding block 207 through the connecting rod 206, and the support rod 205 is hingedly connected to the side wall of the protective plate 101.

[0037] In the above scheme, when the hydraulic rod 202 is elongated, the sliding block 203 slides in the limiting groove 204, the sliding block 207 in the sliding groove 201 is driven by the connecting rod 206 to slide synchronously, and the support rod 205 on the sliding block 207 pushes the protective plate 101 to rotate around the hinge point to open, after the protective plate 101 is completely opened, a stable support structure is formed between the support rod 205 and the protective plate 101 and the sliding block 207, when the hydraulic rod 202 is retracted, the sliding block 203 and the sliding block 207 are reversely and synchronously slid through the connecting rod 206, the support rod 205 is gradually retracted with the movement of the sliding block 207, and the protective plate 101 is driven to rotate around the hinge point to close. The support piece is fixed on both sides of the protective plate 101, which can more stably support the protective plate 101.

[0038] Referring to Figures 3-4 As shown, the sunroof body 100 is provided with a cleaning mechanism 300 in contact with the surface of the filter plate 103 for cleaning.

[0039] In the above scheme, when the filter plate 103 needs to be cleaned, starting the cleaning mechanism 300 to clean the filter plate 103 regularly can ensure that its filtering efficiency is not reduced by accumulated impurities, thereby maintaining the stability of the air quality in the factory building. Through regular cleaning, the blockage and wear of the filter plate 103 caused by long-term accumulation of impurities can be reduced, and the service life of the filter plate 103 can be prolonged.

[0040] Referring to Figures 3-5 As shown, the cleaning mechanism 300 comprises a rotating shaft 301, a cleaning roller 302, a mounting block 309 and a driving piece; wherein,

[0041] A strip-shaped groove 308 is formed on the inner side wall of the sunroof body 100, the mounting block 309 is slidably arranged in the strip-shaped groove 308, the rotating shaft 301 is rotatably arranged on the mounting block 309, the cleaning roller 302 in contact with the surface of the filter plate 103 is fixedly sleeved on the rotating shaft 301, and the driving piece is fixedly arranged on the sunroof body 100 and can drive the cleaning roller 302 to move back and forth while also rotating.

[0042] In the above scheme, the driving member is started, which starts to drive the cleaning roller 302 to reciprocate and rotate, the mounting block 309 slides in the strip-shaped groove 308 with the movement of the cleaning roller 302, ensuring that the cleaning roller 302 can cover the entire surface of the filter plate 103, and the cleaning roller 302 rotates while reciprocating, effectively removing impurities on the surface of the filter plate 103, and the rotating action helps to throw the impurities away from the cleaning roller 302, preventing them from adhering to the filter plate 103 again. When the cleaning task is completed, the driving member stops working, and the cleaning roller 302 and the mounting block 309 can be automatically or manually reset to the initial position, preparing for the next cleaning task. The combination of reciprocating and rotating of the cleaning roller 302 can more comprehensively clean the surface of the filter plate 103, improving the cleaning efficiency and quality.

[0043] Referring to Figures 4-5 As shown, the driving member comprises a rotary motor 303, a reciprocating screw rod 304, a threaded block 306, and a rotating member; wherein,

[0044] The inner side wall of the sunroof body 100 is fixedly provided with a rotary motor 303, the output shaft of the rotary motor 303 is horizontally arranged and the top end is fixedly provided with a reciprocating screw rod 304 through a shaft coupler, the reciprocating screw rod 304 is threadedly sleeved with a threaded block 306, the mounting block 309 is fixedly arranged on the threaded block 306, and the sunroof body 100 is fixedly provided with a rotating member for driving the cleaning roller 302 to rotate while reciprocating.

[0045] In use, the rotary motor 303 is started, the output shaft drives the reciprocating screw rod 304 to rotate, the threaded block 306 reciprocates along the horizontal direction on the reciprocating screw rod 304 due to the threaded driving force of the screw rod, the mounting block 309 moves with the threaded block 306, driving the cleaning roller 302 to reciprocate on the surface of the filter plate 103, and the rotating member starts to work while the threaded block 306 reciprocates, driving the cleaning roller 302 to rotate, and the combination of reciprocating and rotating of the cleaning roller 302 comprehensively removes impurities on the surface of the filter plate 103.

[0046] Referring to Figures 5-6 As shown, the rotating member comprises a rack 305 and a gear 307, the inner side wall of the sunroof body 100 is fixedly provided with the rack 305, and the rotating shaft 301 is fixedly sleeved with the gear 307 engaged with the rack 305.

[0047] In the above scheme, when the threaded block 306 drives the mounting block 309 and the cleaning roller 302 to reciprocate, the gear 307 rolls on the rack 305 with the rotating shaft 301, the engagement of the gear 307 and the rack 305 drives the gear 307 to rotate, and further drives the rotating shaft 301 and the cleaning roller 302 to rotate, and the cleaning roller 302 rotates while reciprocating, effectively removing impurities on the surface of the filter plate 103.

[0048] Referring to Figure 1 As shown in the drawings, the guard plate 101 is fixed with a solar panel 102 electrically connected with the hydraulic rod 202.

[0049] In the above scheme, the solar panel 102 is fixed on the guard plate 101, when the sunlight irradiates on the solar panel 102, it starts to collect solar energy and convert it into electric energy, when it is needed to open or close the guard plate 101, the electric energy in the energy storage device is used to drive the hydraulic rod 202 to work, the hydraulic rod 202 is elongated or contracted, driving the sliding block 203 to slide in the limiting groove 204, and then pushing or pulling the guard plate 101 to rotate around its hinge point through the support rod 205.

[0050] In summary, the environmental protection type factory skylight provided by the utility model, when it is needed to open the skylight for ventilation or smoke exhaust, the hydraulic rod 202 is started, the sliding block 203 is pushed to slide in the limiting groove 204, the movement of the sliding block 203 drives the guard plate 101 to rotate around its hinge point through the hinge action of the support rod 205, gradually opening the skylight, at the same time, the sliding block 207 slides in the sliding groove 201, through the fixed connection of the connecting rod 206 and the sliding block 203, the stability and supporting effect of the support rod 205 are maintained, after the skylight is opened, the air in the factory can be exhausted through the skylight, at the same time, the air is purified through the filtering action of the filter plate 103, when the filter plate 103 accumulates dust or impurities on the surface, it is needed to clean it, the rotary motor 303 is started, driving the reciprocating screw rod 304 to rotate, the screw block 306 moves on the reciprocating screw rod 304, driving the mounting block 309 and the cleaning roller 302 to reciprocate along the strip-shaped groove 308, at the same time, the rotating part works, driving the rotating shaft 301 and the cleaning roller 302 to rotate, cleaning the surface of the filter plate 103, when it is needed to close the skylight, the hydraulic rod 202 is started reversely, pulling the sliding block 203 to slide in the limiting groove 204, the movement of the sliding block 203 drives the guard plate 101 to rotate around its hinge point through the hinge action of the support rod 205, gradually closing the skylight, at the same time, the sliding block 207 slides in the sliding groove 201, maintaining the stability and supporting effect of the support rod 205, the solar panel 102 fixed on the guard plate 101 can collect solar energy and convert it into electric energy, providing power support for the hydraulic rod 202 and other components, realizing environmental protection and energy saving.

[0051] The preferred embodiments of the utility model are described in detail above with reference to the drawings, but the utility model is not limited to the specific details in the above embodiments, within the technical concept range of the utility model, the technical scheme of the utility model can be variously modified, and these simple modifications all belong to the protection range of the utility model.

[0052] In addition, it should be noted that the various specific technical features described in the foregoing detailed description can be combined in any suitable manner, and that the application contemplates all possible combinations of features, unless otherwise indicated herein.

[0053] Furthermore, the various embodiments of the application can also be combined with each other, as long as they do not contradict the spirit of the application, and they should also be considered as disclosed by the application.

Claims

1. An environmentally friendly factory skylight, characterized in that, The factory skylight comprises a skylight body (100), a protection plate (101) is hinged on the skylight body (100) for sealing and waterproofing, and a filter plate (103) is fixedly arranged in the skylight body (100) for filtering the air discharged in the factory. The skylight body (100) is provided with a turnover driving mechanism (200) for driving the opening and closing of the protection plate (101), and the turnover driving mechanism (200) comprises a sliding block (203) slidingly arranged on the inner side wall of the skylight body (100) and a support rod (205) hingedly arranged at both ends of the sliding block (203) and the side wall of the protection plate (101).

2. The environmentally friendly factory skylight according to claim 1, characterized in that, The turnover driving mechanism (200) further comprises a hydraulic rod (202) and a support piece, the hydraulic rod (202) is fixedly arranged on the inner side wall of one side of the skylight body (100), the output end of the hydraulic rod (202) is horizontally arranged, and the sliding block (203) is fixedly arranged on the output end of the hydraulic rod (202), the inner side wall of the skylight body (100) is provided with a limiting groove (204) for sliding of the sliding block (203), and the other side wall of the skylight body (100) is provided with the support piece for supporting the protection plate (101).

3. The environmentally friendly factory skylight according to claim 2, characterized in that, The support piece comprises a connecting rod (206) and a sliding block (207), the other side wall of the skylight body (100) is provided with a sliding groove (201), the sliding block (207) is slidingly arranged in the sliding groove (201), the sliding block (203) is fixedly connected with the sliding block (207) through the connecting rod (206), and the support rod (205) is hingedly arranged at one end of the sliding block (207) and the side wall of the protection plate (101).

4. The environmentally friendly factory skylight according to claim 1, characterized in that, The skylight body (100) is provided with a cleaning mechanism (300) in contact with the surface of the filter plate (103) for cleaning the filter plate (103).

5. The environmentally friendly factory skylight according to claim 4, characterized in that, The cleaning mechanism (300) comprises a rotating shaft (301), a cleaning roller (302), a mounting block (309) and a driving piece, wherein The inner side wall of the skylight body (100) is provided with a strip-shaped groove (308), the mounting block (309) is slidingly arranged in the strip-shaped groove (308), the rotating shaft (301) is rotatably arranged on the mounting block (309), the cleaning roller (302) in contact with the surface of the filter plate (103) is fixedly sleeved on the rotating shaft (301), and the driving piece for driving the cleaning roller (302) to reciprocatingly move while also being capable of self-rotating is fixedly arranged on the skylight body (100).

6. The environmentally friendly factory skylight according to claim 5, characterized in that, The driving piece comprises a rotary motor (303), a reciprocating screw rod (304), a threaded block (306) and a self-rotating piece, wherein The rotary motor (303) is fixedly arranged on the inner side wall of the skylight body (100), the output shaft of the rotary motor (303) is horizontally arranged, the top end of the output shaft is fixedly provided with the reciprocating screw rod (304) through a shaft coupler, the threaded block (306) is threadedly sleeved on the reciprocating screw rod (304), the mounting block (309) is fixedly arranged on the threaded block (306), and the self-rotating piece for driving the cleaning roller (302) to rotate while reciprocatingly moving is fixedly arranged on the skylight body (100).

7. The environmentally friendly factory skylight according to claim 6, characterized in that, The self-rotation part comprises a rack (305) and a gear (307); the inner side wall of the sunroof body (100) is fixedly provided with the rack (305), and the rotating shaft (301) is fixedly provided with the gear (307) engaged with the rack (305).

8. The environmentally friendly factory skylight according to claim 2, characterized in that, The protection plate (101) is fixedly provided with a solar panel (102) electrically connected with the hydraulic rod (202).

Citation Information

Patent Citations

  • Environment-friendly workshop skylight

    CN217537590U