A stadium retractable roof structure

Abstract

The application provides a gymnasium opening and closing roof structure, which comprises a gymnasium body, a top cover, a window, a shielding part, a placing groove, a moving seat, a rotating rod, a roller, a track groove, the bottom of the top cover is provided with a pair of material discharging grooves, the inner top wall of the material discharging groove is communicated with the inner bottom wall of the track groove and is provided with a material guiding groove, the inner side wall of the track groove is communicated with the inner bottom wall of the placing groove and is provided with an inclined limiting groove, and the inner wall of the inclined limiting groove is provided with an air guiding unit which is linked with the rotating rod; the structure of the material discharging groove, the material guiding groove, the inclined limiting groove, the air guiding plate, the connecting pipe, the air inlet pipe, the inclined air guiding pipe and the sponge plate are cooperated to reduce the abrasion of the roller caused by the dust adhered to the inner wall of the track groove, keep the smooth movement of the roller in the track groove, ensure the normal opening and closing of the shielding part on the top cover to the window, and further improve the reliability and stability of the gymnasium opening and closing roof structure.

Description

Technical Field

[0001] This invention relates to the field of stadium technology, and more particularly to a retractable roof structure for stadiums. Background Technology

[0002] A gymnasium is a multi-functional venue, typically used for sports such as basketball, volleyball, table tennis, badminton, and taekwondo, as well as various performances and exhibitions. However, due to variations in indoor and outdoor temperatures and the uncertainty of weather conditions, there are certain limitations on the opening and usage hours of gymnasiums. To better adapt to different weather conditions and event needs, more and more gymnasiums are adopting retractable roof structures.

[0003] For example, Chinese Patent No. CN218091545U discloses a stadium roof structure, which includes a top cover installed on the stadium body. The top cover has an opening, and a transparent plate for closing the opening is slidably installed on the top cover in the horizontal direction. A placement groove is provided on the side wall of the opening in the direction away from the opening. A sliding seat is slidably installed in the placement groove in the direction close to or away from the opening. The transparent plate is installed on the sliding seat, and a roller is rotatably installed on the sliding seat. A sliding groove is slidably installed on the bottom wall of the placement groove in the direction away from the opening, and the roller is slidably installed in the sliding groove. A drive component is provided on the sliding seat for driving the roller to rotate. By sliding the sliding seat through the drive component, the roller slides along the sliding groove, causing the transparent plate to slide. The opening degree can be controlled simply by sliding the transparent plate, which is convenient for opening and closing and increases applicability.

[0004] While the aforementioned patent addresses some problems in existing technologies, it still has shortcomings. Because the viewing panel opens and closes the opening on the roof by moving along the inner wall of a sliding groove using rollers at the bottom of the sliding seat, dust in the air may accumulate on the inner wall of the groove during each opening and closing process. This can obstruct or jam the rollers as they slide within the groove, affecting the smooth sliding of the rollers in conjunction with the viewing panel and potentially accelerating roller wear. Ultimately, this can prevent the rollers from smoothly cooperating with the viewing panel to open and close the opening. Therefore, to address this problem, this invention proposes a retractable roof structure for a gymnasium. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a stadium retractable roof structure that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: a gymnasium retractable roof structure, including a gymnasium body and a roof set on the top of the gymnasium body, the roof having a window, and a shielding part for closing or opening the window slidably provided on the top of the roof, the window having a pair of placement grooves mirror-symmetrical about a central axis, the inner bottom wall of the placement groove having a movable seat slidably connected to the bottom of the shielding part, the movable seat having an installation cavity, and the inner wall of the installation cavity having a rotating rod rotatably disposed thereon. The surface is fixed with rollers that rotate at the bottom of the movable seat. The inner bottom wall of the placement slot is provided with a track groove that slides with the rollers. The bottom of the top cover is provided with a pair of discharge slots. A guide groove is connected between the inner top wall of the discharge slot and the inner bottom wall of the track groove. An inclined limiting groove is connected between the inner side wall of the track groove and the inner bottom wall of the placement slot. An air guiding unit that is linked with the rotating rod is provided between the inner wall of the inclined limiting groove and the interior of the mounting cavity. This unit is used to blow the gas inside the mounting cavity toward the inner walls of the track groove and the guide groove.

[0007] Preferably, the shielding part is a transparent shielding plate, and the shielding part has an extended edge that slides along the top of the top cover to shield the top port corresponding to the placement slot.

[0008] Preferably, the bottom of the movable seat is provided with a rotating groove that fits into the roller.

[0009] Preferably, a bevel gear one is fixed on the rotating rod, and a matching bevel gear two is connected to the surface of the bevel gear one. A drive unit installed on the top wall of the mounting cavity is connected to the bevel gear two.

[0010] Preferably, the air guiding unit includes a pair of circular cylinders sleeved on the rotating rod. The inner wall of the circular cylinders is fitted with a plurality of impeller blades that are circumferentially fixed on the rotating rod. An air inlet connection is provided between the top of the circular cylinder and the inner top wall of the mounting cavity. The bottom of the circular cylinder is provided with an air blowing part that slides with the inclined limiting groove.

[0011] Preferably, the connecting part includes a connecting pipe connected to the top of the cylindrical body, the other end of the connecting pipe being fixed to the inner top wall of the mounting cavity, and an air inlet pipe with a one-way valve connected to the connecting pipe.

[0012] Preferably, the air blowing part includes an air guide plate fixed on the bottom of the cylindrical body, the other side of the air guide plate extends into the inner wall corresponding to the inclined limiting groove, and a plurality of air blowing channels are connected between the side of the air guide plate near the track groove and the inner wall of the cylindrical body.

[0013] Preferably, the side of the air guide plate connected to the bottom of the cylindrical body is vertical, and the side of the air guide plate extending from the inner wall of the inclined limiting groove is inclined.

[0014] Preferably, the roller is provided with an installation groove on the inner wall corresponding to the upper part of the mounting cavity, and an inclined air guide tube is connected between the inner side wall of the installation groove and the surface corresponding to the connecting pipe. The installation groove is provided with an elastically sliding wiping part.

[0015] Preferably, the wiping part includes a spring fixed to the top wall of the mounting groove, and the other end of the spring is fixed with a sponge plate that fits against the inner wall of the mounting groove. An exhaust groove is connected between the inner side wall of the mounting groove and the inner wall of the mounting cavity.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] 1. This invention designs a guide trough connected to the discharge trough on the bottom wall of the track groove. This allows dust and impurities that accumulate on the bottom wall of the track groove to fall from the bottom of the top cover into the corresponding external collection device along the guide trough and discharge trough. This reduces dust accumulation on the bottom wall of the track groove, thereby avoiding wear on the roller surface caused by dust and ensuring smooth opening and closing of the window by the cover on the top cover.

[0018] 2. The present invention, through the design and coordination of a circular cylinder, impeller blades, connecting pipe, air inlet pipe, air guide plate, air blowing channel, and inclined limiting groove, aims to use a rotating rod and rollers to move along the inner wall of the track groove, thereby driving the baffle plate to extract the hot air generated in the installation cavity of the drive unit during the opening or closing of the window. This improves the heat dissipation effect in the installation cavity and allows the extracted hot air to be blown onto the inner wall of the track groove, enabling dust and impurities on the inner wall of the track groove to fall more thoroughly along the guide chute and discharge chute into the external collection device, thus achieving a more thorough cleaning of the inner wall of the track groove.

[0019] 3. The present invention, through the structural design of inclined air duct, spring, sponge plate and exhaust channel, is designed to use a rotating rod to move the rollers on the inner wall of the track channel, thereby driving the baffle plate to further clean the fine dust adhering to the roller surface during the opening or closing of the window, reducing dust wear on the rollers, thus extending the service life of the rollers, reducing the frequency of maintenance and replacement, and improving the reliability and stability of the stadium's retractable roof structure, and ensuring normal operation. Attached Figure Description

[0020] Figure 1 This invention provides a schematic diagram of the roof structure of a gymnasium retractable roof structure.

[0021] Figure 2 A schematic diagram of the shielding part of a retractable roof structure for a gymnasium provided by the present invention;

[0022] Figure 3 A cross-sectional view of the movable seat structure of a gymnasium retractable roof structure provided by the present invention;

[0023] Figure 4 The present invention provides a retractable roof structure for a gymnasium. Figure 3 A magnified view of the structure at point A in the middle;

[0024] Figure 5 A schematic diagram of the air guiding unit structure of a gymnasium retractable roof structure provided by the present invention;

[0025] Figure 6 A schematic diagram of the connection structure between rollers and movable seat in a gymnasium retractable roof structure provided by the present invention;

[0026] Figure 7 A schematic diagram of the cross-sectional structure of a circular cylindrical body for a gymnasium retractable roof structure provided by the present invention;

[0027] Figure 8 A cross-sectional view of the air guide plate of a retractable roof structure for a gymnasium provided by the present invention;

[0028] Figure 9 This is a schematic diagram of the overall structure of a retractable roof structure for a gymnasium, provided by the present invention.

[0029] In the diagram: 1. Gymnasium body; 2. Roof; 21. Window; 22. Placement slot; 23. Track slot; 24. Discharge slot; 25. Guide slot; 26. Inclined limiting slot; 3. Covering part; 31. Extension edge; 4. Moving seat; 41. Mounting cavity; 42. Rotating rod; 43. Roller; 44. Rotating slot; 45. Bevel gear one; 46. Bevel gear two; 47. Drive unit; 5. Air guiding unit; 51. Circular cylinder; 52. Impeller blade; 53. Connecting part; 531. Connecting pipe; 532. Air inlet pipe; 54. Air blowing part; 541. Air guide plate; 542. Air blowing channel; 55. Mounting slot; 56. Inclined air guiding pipe; 57. Wiping part; 571. Spring; 572. Sponge board; 58. Exhaust slot. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0031] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0032] In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Reference Figures 1-6 and Figure 9 A retractable roof structure for a gymnasium includes a gymnasium body 1 and a roof 2 mounted on top of the gymnasium body 1. The roof 2 has a window 21. A pair of shielding parts 3 for closing or opening the window 21 are slidably mounted on the top of the roof 2. The shielding parts 3 are transparent shielding plates. A pair of placement slots 22 are mirror-symmetrical about the central axis on the window 21. An extension edge 31 that slides along the top of the roof 2 is fixed on the shielding part 3 to shield the top port of the corresponding placement slot 22. A movable seat 4 connected to the bottom of the shielding part 3 is slidably mounted on the inner bottom wall of the placement slot 22. The movable seat 4 has an installation cavity 41. A rotating rod 42 is rotatably mounted on the inner wall of the installation cavity 41. A roller 43 located at the bottom of the movable seat 4 is fixed on the surface of the rotating rod 42 and rotates thereon. The bottom of the movable seat 4 has a rotating groove 44 that fits against the roller 43. The inner bottom wall of the placement slot 22 has a track groove 23 that slides with the roller 43.

[0034] In the above technical solution, when the shielding part 3 opens and closes the window 21 on the top cover 2, a drive device designed in the mounting cavity 41 is activated to drive the rotating rod 42 to rotate. This allows the roller 43 on the surface of the rotating rod 42 to slide along the inner wall of the track groove 23, thereby enabling the shielding part 3 connected to the movable seat 4 to open and close the window 21 on the top cover 2.

[0035] The aforementioned drive device for rotating the rotating rod 42, specifically, refers to... Figures 5-6 A bevel gear 45 is fixed on the rotating rod 42. A matching bevel gear 46 is connected to the surface of the bevel gear 45. A drive unit 47 installed on the top wall of the mounting cavity 41 is connected to the bevel gear 46.

[0036] The above technical solution, by activating the drive unit 47 using a servo motor to drive the bevel gear 45 and bevel gear 46 to drive each other, can drive the rotating rod 42 designed in the mounting cavity 41 to slide along the inner wall of the track groove 23 with the roller 43, thereby realizing the automatic opening and closing of the window 21 by the shielding part 3 on the top cover 2, so that the design of the stadium's opening and closing roof structure can better adapt to various weather conditions and activity needs.

[0037] A further optimization is to refer to Figure 1 and Figure 4 The bottom of the top cover 2 is provided with a pair of discharge troughs 24 that can be connected to an external collection device. A guide trough 25 is connected between the inner top wall of the discharge trough 24 and the inner bottom wall of the track trough 23.

[0038] This technical solution is adopted because, in the aforementioned technical solution, dust in the air may accumulate on the inner wall of the track groove 23 each time the window 21 is opened and closed. This can cause the roller 43 to be obstructed or stuck when sliding within the track groove 23, affecting the smooth sliding of the roller 43 and potentially accelerating its wear. Ultimately, this could prevent the roller 43 from cooperating with the obstruction part 3 to open and close the window 21. Therefore, a [missing information - likely a design element] is designed at the bottom of the top cover 2. A discharge trough 24 corresponds to the position of the track groove 23, and a guide trough 25 connects the top wall of the discharge trough 24 and the bottom wall of the track groove 23. In this way, the dust and impurities that accumulate in the middle of the bottom wall of the track groove 23 will fall directly into the external collection device through the channel connecting the guide trough 25 and the discharge trough 24. This reduces the problems of dust affecting the smooth sliding and wear of the roller 43 in the track groove 23, and thus ensures that the roller 43 can better cooperate with the shielding part 3 to open and close the window 21.

[0039] It should be noted that the aforementioned external collection device can be directly installed on the bottom port of the discharge trough 24 at the bottom of the top cover 2, for collecting and processing dust and impurities falling into the track trough 23.

[0040] In a preferred embodiment, reference is made to Figure 5 An inclined limiting groove 26 is connected between the inner side wall of the track groove 23 and the inner bottom wall of the placement groove 22. An air guiding unit 5 is provided between the inner wall of the inclined limiting groove 26 and the interior of the mounting cavity 41, which is linked with the rotating rod 42. It is used to blow the gas inside the mounting cavity 41 to the inner wall of the track groove 23 and the corresponding inner wall of the guide groove 25. The air guiding unit 5 includes a pair of circular cylinders 51 sleeved on the rotating rod 42. Multiple impeller blades 52 that are circumferentially fixed on the rotating rod 42 are attached to the inner wall of the circular cylinder 51. An air inlet connection part 53 is provided between the top of the circular cylinder 51 and the inner top wall of the mounting cavity 41. An air blowing part 54 that slides with the inclined limiting groove 26 is provided at the bottom of the circular cylinder 51.

[0041] This technical solution is adopted because the middle part of the inner bottom wall of the guide trough 25 and the track trough 23 is connected. Therefore, the cooperation between the guide trough 25 and the discharge trough 24, which are connected at the inner bottom wall of the track trough 23, can only directly discharge some dust and impurities that are relatively concentrated in the middle of the inner bottom wall of the track trough 23. However, the part of the inner bottom wall of the track trough 23 that does not correspond to the guide trough 25 cannot be discharged. Therefore, in order to allow the dust in this part of the track trough 23 to be better discharged through the channel connecting the guide trough 25 and the discharge trough 24, an inclined limiting groove 26 is designed between the inner side wall of the track trough 23 and the inner bottom wall of the placement groove 22. The air guiding unit 5 designed inside the mounting cavity 41 can use the force of the rotation of the rotating rod 42 to draw away the hot air generated by the drive unit 47 in the mounting cavity 41 through the air intake connection part 53, and blow it towards the inner bottom wall of the track groove 23 through the air blowing part 54. In this way, the dust attached to the inner bottom wall of the track groove 23 can be more thoroughly discharged from the middle part of the inner bottom wall of the track groove 23 through the channel connecting the material chute 25 and the discharge chute 24, further improving the cleaning effect of the dust attached to the inner bottom wall of the track groove 23, reducing the problems of subsequent unsmooth operation or wear of the roller 43, thereby seriously affecting the opening and closing of the shielding part 3 and the window 21.

[0042] In one specific embodiment, reference is made to Figures 4-8 The connecting part 53 includes a connecting pipe 531 connected to the top of the cylindrical body 51. The other end of the connecting pipe 531 is fixed to the inner top wall of the mounting cavity 41. An air inlet pipe 532 with a one-way valve is connected to the connecting pipe 531. The blowing part 54 includes an air guide plate 541 fixed to the bottom of the cylindrical body 51. The other side of the air guide plate 541 extends into the inner wall corresponding to the inclined limiting groove 26. Multiple blowing channels 542 are connected between the side of the air guide plate 541 near the track groove 23 and the inner wall of the cylindrical body 51. The side of the air guide plate 541 connected to the bottom of the cylindrical body 51 is vertical. The side of the air guide plate 541 located on the inner wall of the inclined limiting groove 26 is inclined.

[0043] In the above technical solution, when the drive unit 47 designed in the installation cavity 41 rotates in conjunction with the rotating rod 42, multiple impeller blades 52 designed to be circumferentially distributed on the rotating rod 42 will rotate along the inner wall of the cylindrical body 51. This allows the connecting pipe 531 connected to the cylindrical body 51 to draw in the hot air generated in the installation cavity 41 by the air inlet pipe 532 with a one-way valve, and under the rotation of the impeller blades 52, the drawn-in gas will be blown towards the inner bottom wall of the track groove 23 through the air blowing channel 542 in the air guide plate 541. This allows the dust on the inner bottom wall of the track groove 23 to be more thoroughly discharged from the channel connecting the guide groove 25 and the discharge groove 24 under the action of airflow, thereby achieving the purpose of more thoroughly cleaning the dust adhering to the inner wall of the track groove 23.

[0044] It should be noted that the connecting part 53 designed in the above-mentioned air guiding unit 5 is used to draw away the hot air generated in the mounting cavity 41 by the driving part 47 and blow the drawn gas onto the bottom wall of the inner wall of the track groove 23 by the blowing part 54. This process is achieved by the rotating rod 42 driving the roller 43 to open and close the window 21 along the inner wall of the track groove 23 in conjunction with the shielding part 3. For example, it can be achieved by the opening process or the closing process, but not both processes can be achieved.

[0045] In addition, the sliding design between the air guide plate 541 and the inclined limiting groove 26 not only facilitates the cleaning of dust adhering to the bottom wall of the inner wall of the track groove 23 by the air guide plate 541, but also effectively limits the roller 43 when it slides to the outer port of the track groove 23, ensuring the stability of the opening and closing adjustment between the roller 43 and the shielding part 3 connected to the movable seat 4 and the window 21.

[0046] In a preferred embodiment, reference is made to Figures 5-8 The roller 43 is located inside the mounting cavity 41 and the corresponding inner wall is provided with a mounting groove 55. An inclined air guide pipe 56 is connected between the inner side wall of the mounting groove 55 and the surface corresponding to the connecting pipe 531. The mounting groove 55 is provided with an elastic sliding wiping part 57. The wiping part 57 includes a spring 571 fixed on the inner top wall of the mounting groove 55. The other end of the spring 571 is fixed with a sponge plate 572 that fits against the inner wall of the mounting groove 55. An exhaust groove 58 is connected between the inner side wall of the mounting groove 55 and the inner wall of the mounting cavity 41.

[0047] This technical solution is adopted because, although the dust on the inner bottom wall of the track groove 23 can be effectively discharged through the coordinated operation of the guide groove 25, discharge groove 24, cylindrical body 51, impeller blade 52, connecting part 53, and blowing part 54, reducing the problems of dust adhering to the inner bottom wall of the track groove 23 causing smooth operation and wear of the roller 43, some fine dust from the inner bottom wall of the track groove 23 may still adhere to the surface of the roller 43. This cannot be completely removed by the above structure. Therefore, to address this issue, an installation groove 55 is designed in the inner wall corresponding to the installation cavity 41 above the roller 43, and a wiping part 57 is designed inside the installation groove 55 to wipe the impeller blade on the rotating rod 42. When rotating in the opposite or forward direction, air can be drawn in through the air blowing part 54 and introduced into the corresponding channel between the connecting pipe 531 and the inclined air guide pipe 56, and continuously blown into the cavity inside the mounting groove 55. In this way, the gas continuously entering the mounting groove 55 will push the sponge plate 572 tension spring 571 to move along the bottom end of the mounting groove 55 until the corresponding channel between the exhaust groove 58 and the mounting groove 55 is located above the top of the sponge plate 572. At this point, the sponge plate 572 is in contact with the surface of the roller 43, cleaning and wiping the fine dust adhering to the surface of the roller 43, improving the cleanliness of the roller 43 surface, and realizing the smooth movement between the roller 43 and the track groove 23, thereby more stably cooperating with the shielding part 3 to open and close the window 21.

[0048] It should be noted that the direction in which the sponge plate 572 rotates via the rotating rod 42 is opposite to the direction in which the air blowing part 54 rotates via the rotating rod 42. That is, when the air blowing part 54 cleans the dust adhering to the bottom wall of the inner side of the track groove 23, and the process of opening the window 21 by rotating the roller 43 along the inner wall of the track groove 23 in conjunction with the blocking part 3 is achieved, the sponge plate 572 is limited to the inside of the mounting groove 55 by the spring 571 and does not come into contact with the surface of the roller 43. Instead, the process of closing the window 21 by rotating the roller 43 along the inner wall of the track groove 23 in conjunction with the blocking part 3 is achieved.

[0049] If the process of opening the window 21 by rotating the rod 42 to drive the roller 43 along the inner wall of the track groove 23 in conjunction with the shielding part 3 is used to clean and wipe the surface of the roller 43, then during this process, the air inlet pipe 532 in the connecting part 53 does not extract the gas in the mounting cavity 41, but instead continuously introduces the gas drawn in through the blowing part 54 into the inner cavity of the mounting groove 55, so as to achieve the cleaning and wiping of the sponge 572 sliding against the inner wall of the mounting groove 55 onto the surface of the roller 43.

[0050] As mentioned above, it should also be noted that during the process of the air blowing part 54 drawing in gas and introducing it into the installation groove 55, the dust adhering to the bottom wall of the inner side of the track groove 23 should be cleaned by the air blowing part 54 beforehand, so as not to draw the dust in the track groove 23 into the air blowing channel 542 inside the air guide plate 541 and cause blockage.

[0051] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of these fall within the protection scope of the present invention.

Claims

1. A retractable roof structure for a stadium, characterized in that include: The gymnasium body (1) and the roof (2) installed on the top of the gymnasium body (1); The top cover (2) is provided with a window (21), and the top of the top cover (2) is provided with a shielding part (3) for closing or opening the window (21). The window (21) is provided with a pair of placement slots (22) that are mirror-symmetrical about the central axis. The inner bottom wall of the placement slot (22) is slidably connected to the bottom of the shielding part (3). The movable seat (4) is provided with an installation cavity (41). The inner wall of the installation cavity (41) is provided with a rotating rod (42) that is rotatably arranged. The surface of the rotating rod (42) is fixed with a roller (43) that rotates at the bottom of the movable seat (4). The inner bottom wall of the placement slot (22) is provided with a track groove (23) that slides with the roller (43). The bottom of the top cover (2) is provided with a pair of discharge grooves (24). The inner top wall of the discharge groove (24) is connected to the inner bottom wall of the track groove (23) by a guide groove (25). The inner side wall of the track groove (23) is connected to the inner bottom wall of the placement groove (22) by an inclined limiting groove (26). The inner wall of the inclined limiting groove (26) is connected to the interior of the mounting cavity (41) by an air guiding unit (5) that is linked with the rotating rod (42) to blow the gas inside the mounting cavity (41) to the inner wall of the track groove (23) and the corresponding inner wall of the guide groove (25). The air guiding unit (5) includes a pair of circular cylinders (51) sleeved on the rotating rod (42). The inner wall of the circular cylinder (51) is fitted with a plurality of impeller blades (52) that are circumferentially fixed on the rotating rod (42). An air inlet connection (53) is provided between the top of the circular cylinder (51) and the inner top wall of the mounting cavity (41). The bottom of the circular cylinder (51) is provided with an air blowing part (54) that slides with the inclined limiting groove (26). The connecting part (53) includes a connecting pipe (531) connected to the top of the cylindrical body (51), the other end of the connecting pipe (531) is fixed to the inner top wall of the mounting cavity (41), and an air inlet pipe (532) with a one-way valve is connected to the connecting pipe (531). The air blowing part (54) includes an air guide plate (541) fixed on the bottom of the cylindrical body (51). The other side of the air guide plate (541) extends into the inner wall corresponding to the inclined limiting groove (26). The side of the air guide plate (541) near the track groove (23) is connected to the inner wall of the cylindrical body (51) by a plurality of air blowing channels (542). The air guide plate (541) is vertical on the side connected to the bottom of the cylindrical body (51), and the air guide plate (541) is inclined on the side extending from the inner wall of the inclined limiting groove (26).

2. A retractable roof structure for a stadium according to claim 1, wherein The shielding part (3) is a transparent shielding plate. An extension edge (31) that slides along the top of the top cover (2) is fixed on the shielding part (3) to shield the top port corresponding to the placement slot (22).

3. The retractable roof structure for a gymnasium according to claim 1, characterized in that, The bottom of the movable seat (4) is provided with a rotating groove (44) that fits against the roller (43).

4. The retractable roof structure for a gymnasium according to claim 1, characterized in that, A bevel gear one (45) is fixed on the rotating rod (42), and a matching bevel gear two (46) is connected to the surface of the bevel gear one (45). A drive part (47) installed on the top wall of the mounting cavity (41) is connected to the bevel gear two (46).

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