Roof anti-backflow hood building integrated structure and construction method thereof

Abstract

The invention relates to a roof anti-backflow wind cap building integrated structure which is used for integrally forming an anti-backflow wind cap at the top of a house building and is characterized by comprising a ventilation shaft, a roof, a ventilation opening, an anti-backflow wind plate and a reset assembly. Wherein the ventilation shaft is integrally poured on the top of the house building along with house building construction; the roof is arranged at the top of the ventilation shaft and completely covers an opening in the top of the ventilation shaft; the two ventilation openings are formed in any two opposite side walls of the ventilation shaft in total. The upper end of the anti-wind-filling plate is rotationally connected to the upper end of the inner side of the ventilation opening; on the basis of the basic structure of the house building, the ventilation shaft and the house building structure are added to be poured into a whole, the ventilation shaft is matched with the roof through the resettable anti-wind-filling plate connected with the ventilation shaft to form the anti-backflow hood structure, the anti-backflow hood and the house building are combined into a whole, installation limitation does not exist, and the anti-backflow hood structure is simple in structure and convenient to use. And the installation cost of the anti-backflow hood can be reduced through construction along with house building.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to an integrated roof backflow prevention wind cap building structure and a construction method thereof. Background Art

[0002] The integrated structure of the roof anti-backflow hood refers to the close integration of the function of the anti-backflow hood with the design of the building roof to form an overall structure. This design aims to prevent adverse external weather, such as strong winds, rain and snow, from backflowing into the room through the roof vents, while allowing natural circulation of indoor and outdoor air to maintain indoor air quality.

[0003] In current roof construction, anti-backflow wind caps are usually components installed separately after the roof construction is completed. This post-installation method may bring some technical challenges. First, it increases the complexity and cost of the installation process, especially when the roof shape is complex or the installation space is limited. The installation of anti-backflow wind caps requires more fine adjustments and additional materials. In addition, since the anti-backflow wind caps are added to the roof construction as an independent component, their design may not be coordinated with the overall appearance style of the building, which may affect the aesthetics and overall harmony of the building. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a roof backflow prevention wind hood building integrated structure and its construction method, and solve the problems of high installation cost and large installation restrictions of the prior art backflow prevention wind hood separated from the building construction.

[0005] To achieve the above-mentioned object, the present invention provides a roof backflow prevention wind cap building integrated structure, which is used to integrally form a backflow prevention wind cap on the top of a building, and the integrated structure includes a ventilation shaft, a roof, a vent, a backflow prevention board and a reset component;

[0006] The ventilation shaft is cast on the top of the building as a whole during the construction of the building;

[0007] The roof is arranged on the top of the ventilation shaft and completely covers the top opening of the ventilation shaft;

[0008] There are two ventilation openings on any two opposite side walls of the ventilation shaft;

[0009] The upper end of the wind-proof plate is rotatably connected to the inner upper end of the vent;

[0010] The reset component is arranged between the lower end of the anti-wind flooding plate and the ventilation shaft, and provides a rotational reset force for the anti-wind flooding plate through the reset component, and supports the lower end of the anti-wind flooding plate to tilt outward in a stationary state.

[0011] By adopting this technical solution, on the basis of the basic structure of the building, a ventilation shaft is added and cast as one with the building structure. The ventilation shaft cooperates with the roof through the resettable anti-wind flooding plate connected to itself to form an anti-backflow hood structure, so that the anti-backflow hood and the building are combined into a whole. Not only there is no installation restriction, but also the installation cost of the anti-backflow hood can be reduced by constructing it together with the building. When the anti-wind flooding plate is not subjected to external force, it remains tilted outward under the action of the reset assembly, thereby forming an opening that is small at the top and large at the bottom, and the internal air can be discharged freely to the outside, while the external wind will press the anti-wind flooding plate downward, narrow the opening and reduce the amount of wind entering the ventilation shaft, thereby achieving the purpose of preventing wind flooding.

[0012] Furthermore, the integrated structure also includes a rotating rod;

[0013] The wind-proof plate is rotatably connected to the inside of the vent through the rotating rod, and the shape of the wind-proof plate is adapted to the shape and size of the vent.

[0014] By adopting this technical solution, the rotating rod realizes the basic rotation function of the anti-draft plate in the vent; the anti-draft plate can completely cover the vent, and when air circulation is not required, the anti-draft plate can be used to block the vent, which increases flexibility of use.

[0015] Furthermore, the reset assembly includes a reset spring, a clamping hole and a hook;

[0016] The clamping hole is provided at the lower end of the wind-proof plate toward the ventilation shaft;

[0017] The hook is connected to the ventilation shaft;

[0018] The return spring is connected between the clamping hole and the hook.

[0019] By adopting this technical solution, the reset spring is connected to the anti-air flooding plate and the ventilation shaft respectively through the card hole and the hook, so that the anti-air flooding plate has the ability to be reset. At the same time, because the reset spring has compressible and stretchable properties, the square tube sealing plate can adapt to the force to change the size of the blocked vent. On this basis, the air volume can be adjusted autonomously and adaptively, and it has flexibility in use.

[0020] Furthermore, the integrated structure also includes a sealing ring and a lifting assembly;

[0021] The sealing ring is fixedly connected to the bottom of the roof and pressed between the bottom of the roof and the top of the ventilation shaft;

[0022] At least two lifting assemblies are arranged on both sides between the ventilation shaft and the roof, and are used to drive the roof to stably rise and fall on the ventilation shaft.

[0023] By adopting this technical solution, the roof lifting assembly has the ability to be raised and lowered on the ventilation shaft, and a ventilation space can be formed by controlling the distance between the roof and the ventilation shaft. It can cooperate with the anti-wind blowing plate to increase the anti-wind blowing effect and increase indoor air circulation. At the same time, with the setting of the sealing ring, the roof can remain sealed with the top of the ventilation shaft after it is lowered, which can prevent dust and other debris from entering the interior of the building.

[0024] Furthermore, the lifting assembly includes a telescopic column, meshing teeth, gears, a rotating handle and a limit assembly;

[0025] The upper end of the telescopic column is fixed to the roof, and the lower end can move up and down along the side wall of the ventilation shaft;

[0026] The engaging teeth are integrally arranged on the side of the telescopic column;

[0027] The gear and the handle are coaxially fixed and rotatably connected to the side wall of the ventilation shaft;

[0028] The gear is meshed with the meshing teeth;

[0029] The limiting assembly is used to fix the position of the handle after rotation.

[0030] By adopting this technical solution, manually turning the handle can drive the gear to rotate. After the gear rotates, with the cooperation of the gear and the meshing teeth, it can drive the telescopic column to rise and fall, thereby driving the roof to rise and fall on the ventilation shaft. After the roof is lifted, the limit assembly is used to prevent the roof from falling under the action of its own weight, thereby ensuring the stability of the lifting function, reducing the difficulty of controlling the roof's lifting and lowering, and reducing the cost of using the lifting assembly.

[0031] Furthermore, the lifting assembly also includes a telescopic slot and a supporting spring;

[0032] The telescopic slot is provided on the side wall of the ventilation shaft, and the lower end of the telescopic column is arranged inside the telescopic slot and can move up and down along the inside of the telescopic slot;

[0033] The supporting spring is arranged between the lower end of the telescopic column and the inner groove bottom of the telescopic groove.

[0034] By adopting this technical solution, a telescopic slot is provided to limit the lifting and lowering of the telescopic column to increase the lifting and lowering stability of the telescopic column, thereby increasing the lifting and lowering stability of the roof; a top support spring is provided to support the telescopic column, thereby reducing the difficulty of lifting the roof, and at the same time can increase the stability of the telescopic column inside the telescopic slot, thereby increasing the stability of the roof.

[0035] Furthermore, the position limiting assembly includes a positioning hole, a spring telescopic rod, a connecting plate and a positioning rod;

[0036] A plurality of positioning holes are evenly distributed along the circumference of the surface of the handle;

[0037] The spring telescopic rod is connected to the side wall of the ventilation shaft adjacent to the turning handle;

[0038] The connecting plate is connected to the output end of the spring telescopic rod, and one end of the connecting plate extends to the front side of the rotating handle;

[0039] The positioning rod is connected to the connecting plate and cooperates with any positioning hole on the rotating handle.

[0040] By adopting this technical solution, the spring telescopic rod provides the pulling force for the connecting plate and the positioning rod. After the turning handle stops rotating, the positioning rod and the connecting plate can be pulled to make the positioning rod face the nearest positioning hole on the turning handle. Then the positioning rod is released and it will fall into the positioning hole under the pulling of the spring telescopic rod, thereby limiting the rotation of the turning handle. Correspondingly, the height of the roof on the ventilation shaft can be fixed at this time, ensuring the stability of the roof after lifting and lowering adjustment.

[0041] The present invention also provides a construction method for an integrated roof backflow prevention hood building structure, comprising the following steps:

[0042] S1. Concrete the ventilation shaft while constructing the top of the building, and reserve ventilation holes on both sides of the ventilation shaft;

[0043] S2. Install an anti-airflow plate on the inner side of the vent, and install a reset assembly between the lower end of the anti-airflow plate and the ventilation shaft;

[0044] S3, hoisting the roof, installing a lifting assembly between the ventilation shaft and the roof, and installing the roof above the ventilation shaft through the lifting assembly;

[0045] S4. Install sealing rings corresponding to the top of the ventilation shaft at the bottom of the roof to complete the construction.

[0046] Furthermore, the installation of the reset component in step S2 includes:

[0047] A clamping hole is arranged on the bottom end of the anti-wind flooding plate toward the ventilation shaft, a hook is connected to the ventilation shaft, and a reset spring is clamped and connected between the clamping hole and the hook.

[0048] Furthermore, the installation of the lifting assembly in step S3 includes:

[0049] A telescopic slot is provided on the side wall of the ventilation shaft, and a supporting spring is fixed on the inner bottom wall of the telescopic slot. A coaxially fixed gear and a turning handle are rotatably connected on the ventilation shaft adjacent to the telescopic slot, and a limit assembly capable of limiting the rotation of the turning handle is installed on the adjacent side of the turning handle.

[0050] A telescopic column is connected to the bottom of the roof, and the telescopic column is dropped into the telescopic groove when the roof is hoisted. At the same time, engaging teeth are arranged on the side of the telescopic column to mesh with the gear.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. On the basis of the basic structure of the building, a ventilation shaft is added and cast as one with the building structure. The ventilation shaft cooperates with the roof through its own resettable anti-wind flooding plate to form an anti-backflow hood structure, so that the anti-backflow hood and the building are combined into a whole. Not only there is no installation restriction, but also the installation cost of the anti-backflow hood can be reduced by constructing it together with the building.

[0053] 2. By integrating the backflow prevention hood with the roof structure, the problem of incoordination between the traditional non-integrated hood and the building appearance is effectively solved. This design not only improves the overall aesthetics of the building, but also ensures the structural stability and waterproof performance between the hood and the roof, thereby improving the overall quality and durability of the building.

[0054] 3. The installation process of the backflow prevention cap is simplified, especially when the roof shape is complex or the installation space is limited, reducing the need for fine adjustment and additional materials, which not only reduces the installation cost, but also reduces the complexity and possible errors in the installation process, and improves construction efficiency.

[0055] 4. The anti-wind blowing plate can be self-rotating under force to adapt to the discharge of different air volumes and play a corresponding anti-wind blowing function, and can make cleaning and maintenance more convenient.

[0056] 5. The roof can be raised and lowered, and can cooperate with the anti-wind board to play an excellent anti-wind performance, and can be flexibly adjusted to ensure the ventilation effect of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a forward three-dimensional schematic diagram of the integrated structure of the roof backflow prevention hood building in the present invention;

[0058] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0059] Figure 3 It is a back-view stereoscopic schematic diagram of the integrated structure of the roof backflow prevention hood building in the present invention;

[0060] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0061] Figure 5 It is an upward stereoscopic schematic diagram of the integrated structure of the roof backflow prevention hood building in the present invention;

[0062] Figure 6 It is a schematic diagram of the partial structure of the lifting component in the integrated structure of the roof backflow prevention hood building in the present invention.

[0063] Explanation of the accompanying drawings: 1. ventilation shaft; 2. roof; 3. vent; 4. rotating rod; 5. wind-proof plate; 6. reset spring; 7. clamping hole; 8. hook; 9. telescopic slot; 10. supporting spring; 11. gear; 12. rotating handle; 13. positioning hole; 14. spring telescopic rod; 15. connecting plate; 16. positioning rod; 17. telescopic column; 18. engaging teeth; 19. connecting rod; 20. sealing ring. DETAILED DESCRIPTION

[0064] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0065] Please refer to the attached Figure 1-2 The present invention provides an integrated roof backflow prevention hood building structure, which is used for integrally forming a backflow prevention hood on the top of a building, and the integrated structure includes a ventilation shaft 1, a roof 2, a vent 3, a backflow prevention plate 5 and a reset component; wherein the ventilation shaft 1 is integrally cast on the top of the building during the construction of the building; the roof 2 is arranged on the top of the ventilation shaft 1, and completely covers the top opening of the ventilation shaft 1; two vents 3 are provided on any two opposite side walls of the ventilation shaft 1; the upper end of the backflow prevention plate 5 is rotatably connected to the inner upper end of the vent 3; the reset component is arranged between the lower end of the backflow prevention plate 5 and the ventilation shaft 1, and the rotation reset force of the backflow prevention plate 5 is provided through the reset component, and the lower end of the backflow prevention plate 5 is supported to tilt outward in a stationary state;

[0066] On the basis of the basic structure of the building, a ventilation shaft 1 is added and cast as one with the building structure. The ventilation shaft 1 cooperates with the roof 2 through the resettable anti-wind flooding plate 5 connected to itself to form an anti-backflow hood structure, so that the anti-backflow hood and the building are combined into a whole. Not only there is no installation restriction, but also the installation cost of the anti-backflow hood can be reduced by constructing it together with the building. When the anti-wind flooding plate 5 is not subjected to external force, it remains tilted outward under the action of the reset assembly, thereby forming an opening that is small at the top and large at the bottom, and the internal air can be discharged freely to the outside, while the external wind will press the anti-wind flooding plate 5 downward, narrow the opening and reduce the amount of wind entering the ventilation shaft 1, thereby achieving the purpose of preventing wind flooding.

[0067] Furthermore, the integrated structure also includes a rotating rod 4, which realizes the basic rotation function of the anti-airflow plate 5 located in the vent 3; the anti-airflow plate 5 is rotatably connected to the inside of the vent 3 through the rotating rod 4, and the shape of the anti-airflow plate 5 is adapted to the shape and size of the vent 3. The anti-airflow plate 5 can completely cover the vent 3. When air circulation is not required, the anti-airflow plate 5 can be selected to block the vent 3, which increases the flexibility of use.

[0068] Furthermore, in order to increase the adaptive ability of the wind-proof plate 5, its material can be set to be aluminum to reduce its weight so that it can rotate accordingly to adapt to the wind force.

[0069] Further, please refer to the attached Figure 3 The reset assembly includes a reset spring 6, a clamping hole 7 and a hook 8; wherein the clamping hole 7 is provided at the lower end of the anti-wind plate 5 facing the ventilation shaft 1; the hook 8 is connected to the ventilation shaft 1; the reset spring 6 is clamped and connected between the clamping hole 7 and the hook 8;

[0070] The reset spring 6 is connected to the anti-air flooding plate 5 and the ventilation shaft 1 respectively by means of the card hole 7 and the hook 8, so that the anti-air flooding plate 5 has the ability to be reset. At the same time, because the reset spring 6 has compressible and stretchable properties, the square tube sealing plate 5 can adapt to the force to change the size of the blocked vent 3. On this basis, the air volume can be adjusted autonomously according to the adaptive air volume, and it has flexibility in use.

[0071] Furthermore, in order to increase the function of the roof 2 itself, each side thereof is arranged to extend out of the outer wall of the ventilation shaft 1, thereby increasing the effect of preventing rainwater.

[0072] Please refer to the attached Figure 5 The integrated structure also includes a sealing ring 20 and a lifting assembly; the sealing ring 20 is fixedly connected to the bottom of the roof 2 and pressed between the bottom of the roof 2 and the top of the ventilation shaft 1; at least two lifting assemblies are provided on both sides between the ventilation shaft 1 and the roof 2, and are used to drive the roof 2 to stably rise and fall on the ventilation shaft 1;

[0073] After the roof 2 lifting component has the ability to be raised and lowered on the ventilation shaft 1, a ventilation space can be formed by controlling the distance between the roof 2 and the ventilation shaft 1, and the anti-wind blowing plate 5 can be used to increase the anti-wind blowing effect and increase indoor air circulation; at the same time, with the setting of the sealing ring 20, the roof 2 can remain sealed with the top of the ventilation shaft 1 after it is lowered, which can prevent dust and other debris from entering the interior of the building.

[0074] Further, please refer to the attached Figure 4 and attached Figure 6 The lifting assembly includes a telescopic column 17, a meshing tooth 18, a gear 11, a rotating handle 12 and a limit assembly; wherein the upper end of the telescopic column 17 is fixed to the roof 2, and the lower end can move up and down along the side wall of the ventilation shaft 1; the meshing tooth 18 is integrally arranged on the side of the telescopic column 17; the gear 11 and the rotating handle 12 are coaxially fixed and rotatably connected to the side wall of the ventilation shaft 1; the gear 11 is meshed with the meshing tooth 18; the limit assembly is used to fix the position of the rotating handle 12 after it is rotated;

[0075] Manually turning the handle 12 can drive the gear 11 to rotate. After the gear 11 rotates, the cooperation of the gear 11 and the meshing tooth 18 can drive the telescopic column 17 to rise and fall, thereby driving the roof 2 to rise and fall on the ventilation shaft 1. After the roof 2 is lifted, the limit assembly is used to prevent the roof 2 from falling under the action of its own weight, thereby ensuring the stability of the lifting function, reducing the difficulty of controlling the lifting of the roof 2, and reducing the cost of using the lifting assembly.

[0076] Furthermore, the lifting assembly further includes a telescopic slot 9 and a supporting spring 10; wherein the telescopic slot 9 is provided on the side wall of the ventilation shaft 1, and the lower end of the telescopic column 17 is arranged inside the telescopic slot 9 and can move up and down along the inside of the telescopic slot 9; the supporting spring 10 is arranged between the lower end of the telescopic column 17 and the inner bottom of the telescopic slot 9;

[0077] A telescopic slot 9 is provided to limit the lifting and lowering of the telescopic column 17 to increase the lifting and lowering stability of the telescopic column 17, thereby increasing the lifting and lowering stability of the roof 2; a supporting spring 10 is provided to support the telescopic column 17, thereby reducing the difficulty of lifting the roof 2, and at the same time can increase the stability of the telescopic column 17 inside the telescopic slot 9, thereby increasing the stability of the roof 2.

[0078] Furthermore, the limiting assembly includes a positioning hole 13, a spring telescopic rod 14, a connecting plate 15 and a positioning rod 16; wherein a plurality of positioning holes 13 are evenly arranged along the circumference of the surface of the turning handle 12; the spring telescopic rod 14 is connected to the side wall of the ventilation shaft 1 adjacent to the turning handle 12; the connecting plate 15 is connected to the output end of the spring telescopic rod 14, and one end of the connecting plate 15 extends to the front side of the turning handle 12; the positioning rod 16 is connected to the connecting plate 15, and cooperates with any positioning hole 13 on the turning handle 12;

[0079] The spring telescopic rod 14 provides a pulling force for the connecting plate 15 and the positioning rod 16. After the turning handle 12 stops rotating, the positioning rod 16 and the connecting plate 15 can be pulled to make the positioning rod 16 face the nearest positioning hole 13 on the turning handle 12, and then the positioning rod 16 is released. Under the pulling of the spring telescopic rod 14, it will fall into the positioning hole 13, thereby limiting the rotation of the turning handle 12. Correspondingly, the height of the roof 2 on the ventilation shaft 1 can be fixed at this time, ensuring the stability of the roof 2 after the lifting and lowering adjustment.

[0080] Furthermore, combined with Figure 3-5 In order to reduce the difficulty of stably adjusting the roof 2 above the ventilation shaft 1, the gears 11 in the lifting assemblies on both sides between the roof 2 and the ventilation shaft 1 can be coaxially connected through a connecting rod 19.

[0081] Furthermore, in order to further reduce the difficulty of stably adjusting the roof 2 above the ventilation shaft 1, the limit assembly and the turning handle 12 in any of the two sets of lifting assemblies connected by the connecting rod 19 can be removed.

[0082] The present invention also provides a construction method for an integrated roof backflow prevention hood building structure, comprising the following steps: S1, pouring a ventilation shaft 1 while constructing the top of a building, and reserving ventilation openings 3 on both sides of the ventilation shaft 1; S2, installing a wind-proof plate 5 on the inner side of the ventilation opening 3, and installing a reset component between the lower end of the wind-proof plate 5 and the ventilation shaft 1, wherein the installation of the reset component comprises: opening a clamping hole 7 at the bottom end of the wind-proof plate 5 facing the ventilation shaft 1, connecting a hook 8 on the ventilation shaft 1, and then clamping and connecting a reset spring 6 between the clamping hole 7 and the hook 8; S3, hoisting the roof 2, installing a lifting component between the ventilation shaft 1 and the roof 2, and installing the roof 2 through the lifting component Above the ventilation shaft 1, the installation of the lifting assembly includes: opening a telescopic groove 9 on the side wall of the ventilation shaft 1, fixing a supporting spring 10 on the inner bottom wall of the telescopic groove 9, rotating and connecting a coaxially fixed gear 11 and a handle 12 on the ventilation shaft 1 adjacent to the telescopic groove 9, and installing a limit assembly capable of limiting the rotation of the handle 12 on the adjacent side of the handle 12; connecting a telescopic column 17 at the bottom of the roof 2, and making the telescopic column 17 fall into the telescopic groove 9 when the roof 2 is hoisted, and providing an engaging tooth 18 on the side of the telescopic column 17 to engage with the gear 11; S4, installing a sealing ring 20 corresponding to the upper and lower ends of the top of the ventilation shaft 1 at the bottom of the roof 2 to complete the construction.

[0083] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A roof backflow prevention hood building integrated structure, used for integrally forming a backflow prevention hood on the top of a building, characterized in that: The integrated structure includes a ventilation shaft, a roof, a vent, a wind-proof plate and a reset assembly; The ventilation shaft is cast on the top of the building as a whole during the construction of the building; The roof is arranged on the top of the ventilation shaft and completely covers the top opening of the ventilation shaft; There are two ventilation openings on any two opposite side walls of the ventilation shaft; The upper end of the wind-proof plate is rotatably connected to the inner upper end of the vent; The reset component is arranged between the lower end of the anti-wind flooding plate and the ventilation shaft, and provides a rotational reset force for the anti-wind flooding plate through the reset component, and supports the lower end of the anti-wind flooding plate to tilt outward in a stationary state.

2. The roof backflow prevention wind cap building integrated structure according to claim 1 is characterized by: The integrated structure also includes a rotating rod; The wind-proof plate is rotatably connected to the inside of the vent through the rotating rod, and the shape of the wind-proof plate is adapted to the shape and size of the vent.

3. The roof backflow prevention wind cap building integrated structure according to claim 1 is characterized by: The reset assembly comprises a reset spring, a clamping hole and a hook; The clamping hole is provided at the lower end of the wind-proof plate toward the ventilation shaft; The hook is connected to the ventilation shaft; The return spring is connected between the clamping hole and the hook.

4. The roof backflow prevention wind cap building integrated structure according to claim 1 is characterized by: The integrated structure also includes a sealing ring and a lifting assembly; The sealing ring is fixedly connected to the bottom of the roof and pressed between the bottom of the roof and the top of the ventilation shaft; At least two lifting assemblies are arranged on both sides between the ventilation shaft and the roof, and are used to drive the roof to stably rise and fall on the ventilation shaft.

5. The roof backflow prevention wind cap building integrated structure according to claim 4 is characterized by: The lifting assembly includes a telescopic column, engaging teeth, gears, a rotating handle and a limit assembly; The upper end of the telescopic column is fixed to the roof, and the lower end can move up and down along the side wall of the ventilation shaft; The engaging teeth are integrally arranged on the side of the telescopic column; The gear and the handle are coaxially fixed and rotatably connected to the side wall of the ventilation shaft; The gear is meshed with the meshing teeth; The limiting assembly is used to fix the position of the handle after rotation.

6. The roof backflow prevention wind cap building integrated structure according to claim 5 is characterized by: The lifting assembly also includes a telescopic slot and a supporting spring; The telescopic slot is provided on the side wall of the ventilation shaft, and the lower end of the telescopic column is arranged inside the telescopic slot and can move up and down along the inside of the telescopic slot; The supporting spring is arranged between the lower end of the telescopic column and the inner groove bottom of the telescopic groove.

7. The integrated roof backflow prevention cap building structure according to claim 5 is characterized by: The limiting assembly includes a positioning hole, a spring telescopic rod, a connecting plate and a positioning rod; A plurality of positioning holes are evenly distributed along the circumference of the surface of the handle; The spring telescopic rod is connected to the side wall of the ventilation shaft adjacent to the turning handle; The connecting plate is connected to the output end of the spring telescopic rod, and one end of the connecting plate extends to the front side of the rotating handle; The positioning rod is connected to the connecting plate and cooperates with any positioning hole on the rotating handle.

8. A construction method for the roof backflow prevention wind cap building integrated structure according to any one of claims 1 to 7, characterized in that: The steps include: S1. Concrete the ventilation shaft while constructing the top of the building, and reserve ventilation holes on both sides of the ventilation shaft; S2. Install an anti-airflow plate on the inner side of the vent, and install a reset assembly between the lower end of the anti-airflow plate and the ventilation shaft; S3, hoisting the roof, installing a lifting assembly between the ventilation shaft and the roof, and installing the roof above the ventilation shaft through the lifting assembly; S4. Install sealing rings corresponding to the top of the ventilation shaft at the bottom of the roof to complete the construction.

9. The construction method of the roof backflow prevention wind cap building integrated structure according to claim 8, characterized in that: The installation of the reset component in step S2 includes: A clamping hole is arranged on the bottom end of the anti-wind flooding plate toward the ventilation shaft, a hook is connected to the ventilation shaft, and a reset spring is clamped and connected between the clamping hole and the hook.

10. The construction method of the integrated roof backflow prevention cap building structure according to claim 8, characterized in that: The installation of the lifting assembly in step S3 includes: A telescopic slot is provided on the side wall of the ventilation shaft, and a supporting spring is fixed on the inner bottom wall of the telescopic slot. A coaxially fixed gear and a turning handle are rotatably connected on the ventilation shaft adjacent to the telescopic slot, and a limit assembly capable of limiting the rotation of the turning handle is installed on the adjacent side of the turning handle. A telescopic column is connected to the bottom of the roof, and the telescopic column is dropped into the telescopic groove when the roof is hoisted. At the same time, engaging teeth are arranged on the side of the telescopic column to mesh with the gear.

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