Windproof reinforcing device for foundation pit gas film

Abstract

The invention belongs to the technical field of foundation pit gas films, and discloses a windproof reinforcing device for a foundation pit gas film, which comprises an internal fixing structure, an external reinforcing structure and an embedded part arranged underground, the lower part of the gas film is clamped between the internal fixing structure and the external reinforcing structure, and the internal fixing structure is connected with the embedded part through a plurality of ground anchors; the external reinforcing structure comprises external reinforcing members and steel cable ropes, the external reinforcing members are matched with the internal fixing structure to clamp the lower portion of the air film, the multiple steel cable ropes which are longitudinally arranged and / or transversely arranged are arranged outside the air film, and the two ends of each steel cable rope are connected to the corresponding external reinforcing member; and a tightening mechanism connected with the steel cable rope is arranged on the external reinforcing part corresponding to one end of the steel cable rope, so that the steel cable rope outside the gas film is tightened through the tightening mechanism. Through integral matching reinforcement, the stability of the air film is better, and the windproof effect is better.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit air membranes, and in particular relates to a windproof reinforcement device for foundation pit air membranes. Background Art

[0002] The foundation pit air film is a structure that can cover the top of the foundation pit. It forms a closed and controlled excavation environment space through inflation or mechanical support to provide protection for the foundation pit. This structure has multiple functions such as dust prevention, noise reduction, heat preservation, heat insulation, wind resistance, and impact resistance. It can effectively improve the construction environment of the construction site and reduce the impact of construction on the surrounding environment. As an innovative site protection measure, the foundation pit air film has received widespread attention and application in the field of construction in recent years.

[0003] During the use of the foundation pit air film, the control of the internal air pressure makes the air film relatively large after it is unfolded. Therefore, in practice its stability is mainly affected by the external strong wind. Therefore, it is necessary to design a more stable foundation pit air film reinforcement structure. Summary of the invention

[0004] The purpose of the present invention is to provide a windproof reinforcement device for a foundation pit air film, which is used to address the problem that the foundation pit air film is affected by strong winds, thereby possibly causing its structure to be unstable.

[0005] The above-mentioned problems existing in the prior art are solved.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A windproof reinforcement device for a foundation pit air film, comprising an internal fixing structure, an external reinforcement structure and embedded parts arranged underground, the lower part of the air film is clamped between the internal fixing structure and the external reinforcement structure, and the internal fixing structure is connected to the embedded parts through a plurality of ground anchors; the external reinforcement structure comprises an external reinforcement piece and a steel cable rope, the external reinforcement piece cooperates with the internal fixing structure to clamp the lower part of the air film, a plurality of steel cables arranged longitudinally and / or transversely are arranged outside the air film, the two ends of the steel cable rope are respectively connected to an external reinforcement piece, and a tightening mechanism connected to the steel cable rope is arranged on the external reinforcement piece corresponding to one end of the steel cable rope, so as to tighten the steel cable rope outside the air film through the tightening mechanism.

[0008] As a preferred technical solution in the present invention, the internal fixing structure includes an I-beam, a first buckle and a second buckle, the second buckle is located on the outside of the I-beam, and the inner side of the second buckle is provided with a second protrusion that matches and buckles with the groove on the outer side of the I-beam, and the lower part of the air film is arranged at the upper end of the I-beam after passing through the outer side of the second buckle, the lower end of the second buckle, the lower end of the I-beam and the inner side of the I-beam in sequence; the first buckle is located on the inner side of the I-beam, and the outer side of the first buckle is provided with a first protrusion that matches and clamps the air film with the groove on the inner side of the I-beam; the ground anchor includes a first ground anchor and a second ground anchor, the upper part of the first ground anchor passes through the I-beam and the first protrusion and is locked to the upper end of the I-beam by a nut, and the upper part of the second ground anchor passes through the I-beam and the second protrusion and is locked to the upper end of the I-beam by a nut.

[0009] As a preferred technical solution in the present invention, the height of the upper end of the first fastening piece and the height of the upper end of the second fastening piece in the horizontal direction are both higher than the height of the upper end of the I-beam in the horizontal direction, and a U-shaped groove is formed at the upper part after the three are assembled, and at least two U-shaped reinforcement pieces stacked in sequence along the vertical direction are installed on the upper end of the U-shaped groove, and all the U-shaped reinforcement pieces are located on the inner side of the air film, and the U-shaped groove and each U-shaped reinforcement piece are filled with reinforcement material, and the inner bottom surface of each U-shaped reinforcement piece is provided with a first through hole for facilitating the downward flow of the reinforcement material.

[0010] As a preferred technical solution in the present invention, the external reinforcement is an L-shaped structure, the horizontal portion of the external reinforcement is arranged at the lower end of the internal fixed structure, and the horizontal portion cooperates with the internal fixed structure to clamp the air film, and the vertical portion of the external reinforcement cooperates with the outer side of the internal fixed structure to clamp the air film.

[0011] As a preferred technical solution in the present invention, a second groove is provided on the outer side of the second fastening piece, and a third protrusion matching the second groove is provided on the vertical portion of the external reinforcement piece, and the third protrusion cooperates with the second groove to clamp the air film.

[0012] As a preferred technical solution in the present invention, hooks are provided at both ends of the steel cable rope, and a first hanging ring is provided above the external reinforcement piece corresponding to one end of the steel cable rope, the first hanging ring is hung with the hook at one end of the steel cable rope, and the lower end of the first hanging ring is connected to the tightening mechanism; a second hanging ring is fixed to the upper end of the external reinforcement piece corresponding to the other end of the steel cable rope, and the hook at the other end of the steel cable rope is hung on the second hanging ring.

[0013] As a preferred technical solution in the present invention, the tightening mechanism includes a connecting rod and a driving mechanism, the connecting rod is slidably connected in the external reinforcement, the upper end of the connecting rod passes through the external reinforcement and is connected to the corresponding first hanging ring, and the driving mechanism is installed inside the external reinforcement and connected to the lower part of the connecting rod, so as to control the connecting rod to slide up and down in the external reinforcement through the driving mechanism.

[0014] As a preferred technical solution in the present invention, the upper part of the connecting rod is a polygonal section slidably connected to the external reinforcement, and the lower part of the connecting rod is a screw, and the diameter of the screw section is smaller than the diameter of the inscribed circle of the polygonal section; an equipment driving groove is opened on the outer side of the external reinforcement, and the screw section is passed from the top of the equipment driving groove to the bottom of the equipment driving groove; the driving mechanism includes a first bevel gear, a second bevel gear and a handwheel, the first bevel gear is threadedly connected to the outside of the screw section, and the first bevel gear is rotatably connected to the inner bottom surface of the equipment driving groove through a bearing; a mounting seat is installed on the inner bottom surface of the equipment driving groove outside the first bevel gear, and a rotating shaft is rotatably connected to the mounting seat, the second bevel gear is coaxially connected to one end of the rotating shaft and meshes with the first bevel gear, and the handwheel is coaxially connected to the other end of the rotating shaft.

[0015] As a preferred technical solution in the present invention, at least one limit nut is threadedly connected to the screw segment. When one limit nut is provided, the limit nut abuts against the inner top surface of the device drive groove; when at least two limit nuts are provided, the left and right limit nuts abut against each other in sequence from top to bottom, and the limit nut located at the top abuts against the inner top surface of the device drive groove.

[0016] As a preferred technical solution in the present invention, a sealing door is installed at the notch of the device driving slot, and the inner side of the sealing door is connected to a limiting shaft. When the sealing door is in a closed state, the limiting shaft is inserted into the handwheel.

[0017] Beneficial effects: The present invention respectively arranges an internal fixing structure and an external reinforcement structure on the inside and outside of the air membrane, and then the lower part of the air membrane is clamped by the internal fixing structure and the external reinforcement structure to ensure the stability of the air membrane, wherein the internal fixing structure is connected to the embedded parts by a ground anchor, which can further enhance the stability of the structure; at the same time, a steel cable with extremely strong structural stability is arranged outside the air membrane, and a tightening mechanism is further arranged on the external reinforcement at one end of the steel cable, and then the steel cable is further tightened after the steel cable is installed, so that the steel cable can better bind the air membrane, and through the overall coordinated reinforcement, the stability of the air membrane is better and the windproof effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of part A.

[0020] In the figure: 1-air film; 2-ground anchor; 3-external reinforcement; 4-steel rope; 5-I-beam; 6-first buckle; 7-second buckle; 8-U-shaped reinforcement; 9-first hanging ring; 10-connecting rod; 11-first bevel gear; 12-second bevel gear; 13-handwheel; 14-limiting nut; 15-sealing door. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0022] Example:

[0023] like Figure 1 and Figure 2 As shown, this embodiment provides a windproof reinforcement device for a foundation pit air film, including an internal fixing structure, an external reinforcement structure and embedded parts arranged underground, the internal fixing structure is located on the inner side of the air film 1, the external reinforcement structure is located on the outer side of the air film 1, the lower part of the air film 1 is clamped between the internal fixing structure and the external reinforcement structure, and the stability of the air film 1 is ensured by cooperation, the internal fixing structure is connected to the embedded parts by multiple anchors 2, and the stability of the internal fixing structure is ensured, and then the stability of the air film 1 is ensured; the external reinforcement structure includes an external reinforcement member 3 and a steel cable 4, and the external reinforcement member 3 cooperates with the internal fixing structure to clamp the lower part of the air film 1, which does not affect the air film 1 under the action of air pressure When unfolded downward, a plurality of steel cables 4 arranged longitudinally and / or transversely are arranged outside the air membrane 1, that is, a plurality of steel cables 4 arranged longitudinally can be arranged outside the air membrane 1, and a plurality of steel cables 4 arranged transversely can be arranged outside the air membrane 1, so that the stability of the air membrane 1 is enhanced by the restraint of the steel cables 4, and the two ends of the steel cables 4 are respectively connected to an external reinforcement 3, and a tightening mechanism connected to the steel cables 4 is provided on the external reinforcement 3 corresponding to one end of the steel cables 4, for tightening the steel cables 4 outside the air membrane 1 through the tightening mechanism, and then further tightening the steel cables 4 after the steel cables 4 are installed, so that the steel cables 4 can better bind the air membrane 1.

[0024] The present invention respectively arranges an internal fixing structure and an external reinforcement structure on the inner side and the outer side of the air membrane 1, and then the lower part of the air membrane 1 is clamped by the internal fixing structure and the external reinforcement structure to ensure the stability of the air membrane 1, wherein the internal fixing structure is connected to the embedded part through the ground anchor 2, which can further enhance the stability of the structure; at the same time, a steel cable rope 4 with extremely strong structural stability is arranged outside the air membrane 1, and a tightening mechanism is also arranged on the external reinforcement piece 3 at one end of the steel cable rope 4, and then the steel cable rope 4 is further tightened after the steel cable rope 4 is installed, so that the steel cable rope 4 can better bind the air membrane 1, and through the overall coordinated reinforcement, the stability of the air membrane 1 is better and the windproof effect is better.

[0025] As a preferred implementation scheme in this embodiment, it needs to be further explained that the internal fixing structure includes an I-beam 5, a first buckle 6 and a second buckle 7, the second buckle 7 is located on the outside of the I-beam 5, and the second buckle 7 is provided on the inside of the second buckle 7 with a second protrusion that matches and buckles with the groove on the outside of the I-beam 5. The lower part of the air film 1 is arranged on the upper end of the I-beam 5 after bypassing the outside of the second buckle 7, the lower end of the second buckle 7, the lower end of the I-beam 5 and the inside of the I-beam 5 in sequence, so that the clamping of the air film 1 can be The effect is better; the first buckle 6 is located on the inner side of the I-beam 5, and the outer side of the first buckle 6 is provided with a first protrusion that matches the inner groove of the I-beam 5 to clamp the air film 1; the ground anchor 2 includes a first ground anchor and a second ground anchor, the upper part of the first ground anchor passes through the I-beam 5 and the first protrusion and is locked to the upper end of the I-beam 5 by a nut, and the upper part of the second ground anchor passes through the I-beam 5 and the second protrusion and is locked to the upper end of the I-beam 5 by a nut, and a gasket can also be provided between the nut and the air film 1 to further enhance the structural stability. This embodiment better ensures the stability of the air film 1 on the basis of not destroying the integrity of the air film 1 as much as possible through the coordination of the concave and convex structure.

[0026] As a preferred implementation scheme in this embodiment, it needs to be further explained that the height of the upper end of the first fastening member 6 and the height of the upper end of the second fastening member 7 in the horizontal direction are both higher than the height of the upper end of the I-beam 5 in the horizontal direction. After the three are assembled, a U-shaped groove is formed at the upper part, and at least two U-shaped reinforcement members 8 stacked in sequence along the vertical direction are installed on the upper end of the U-shaped groove. All U-shaped reinforcement members 8 are located on the inner side of the air film 1. The U-shaped groove and each U-shaped reinforcement member 8 are filled with reinforcement material. The reinforcement material can be concrete, or thermal insulation material, etc., without specific limitation. The inner bottom surface of each U-shaped reinforcement member 8 is provided with a first through hole for facilitating the downward flow of the reinforcement material, thereby facilitating the injection of the reinforcement material.

[0027] As a preferred implementation scheme in this embodiment, it needs to be further explained that the external reinforcement 3 is an L-shaped structure, the horizontal portion of the external reinforcement 3 is arranged at the lower end of the internal fixed structure, and the horizontal portion cooperates with the internal fixed structure to clamp the air membrane 1, and the vertical portion of the external reinforcement 3 cooperates with the outer side of the internal fixed structure to clamp the air membrane 1, which can further enhance the stability of the air membrane 1 and prevent the air membrane 1 from moving.

[0028] As a preferred implementation scheme in this embodiment, it needs to be further explained that a second groove is provided on the outer side of the second fastener 7, and a third protrusion matching the second groove is provided on the vertical portion of the external reinforcement 3. The third protrusion cooperates with the second groove to clamp the air membrane 1, which can further enhance the stability of the air membrane 1 and prevent the air membrane 1 from moving.

[0029] As a preferred implementation scheme in this embodiment, it needs to be further explained that hooks are provided at both ends of the steel cable rope 4, and a first hanging ring 9 is provided above the external reinforcement 3 corresponding to one end of the steel cable rope 4, and the first hanging ring 9 is hung with the hook at one end of the steel cable rope 4 to preliminarily ensure the stability of the steel cable rope 4, and the lower end of the first hanging ring 9 is connected to the tightening mechanism. In practice, the first hanging ring 9 can be tightened by the tightening mechanism, and then the steel cable rope 4 is tightened by the first hanging ring 9; a second hanging ring is fixed on the upper end of the external reinforcement 3 corresponding to the other end of the steel cable rope 4, and the hook at the other end of the steel cable rope 4 is hung on the second hanging ring to ensure stability.

[0030] As a preferred implementation scheme in this embodiment, it needs to be further explained that the tightening mechanism includes a connecting rod 10 and a driving mechanism. The connecting rod 10 is slidably connected in the external reinforcement 3. The upper end of the connecting rod 10 passes through the external reinforcement 3 and is connected to the corresponding first hanging ring 9. The driving mechanism is installed inside the external reinforcement 3 and connected to the lower part of the connecting rod 10, so as to control the connecting rod 10 to slide up and down in the external reinforcement 3 through the driving mechanism. In practice, the connecting rod 10 can be controlled to slide in the external reinforcement 3 through the driving mechanism, thereby tightening the steel cable 4.

[0031] As a preferred implementation scheme in this embodiment, it needs to be further explained that the upper part of the connecting rod 10 is a polygonal segment slidably connected to the external reinforcement 3, and the lower part of the connecting rod 10 is a screw, and the diameter of the screw segment is smaller than the diameter of the inscribed circle of the polygonal segment; an equipment driving groove is provided on the outer side of the external reinforcement 3, and the screw segment is passed from the top of the equipment driving groove to the bottom of the equipment driving groove, so that during the sliding process of the connecting rod 10, the screw segment will not rub against the external reinforcement 3; the driving mechanism includes a first bevel gear 11, a second bevel gear 12 and a handwheel 13, and the first bevel gear 11 is threadedly connected to the outside of the screw segment, and the screw can be driven by the rotation of the first bevel gear 11. The rod segment rotates, and the screw segment is affected by the polygonal segment, which eventually makes the connecting rod 10 slide up and down, and the first bevel gear 11 is rotatably connected to the inner bottom surface of the equipment driving groove through the bearing, ensuring that the first bevel gear 11 can rotate stably; a mounting seat is installed on the inner bottom surface of the equipment driving groove outside the first bevel gear 11, and a rotating shaft is rotatably connected to the mounting seat. The second bevel gear 12 is coaxially connected to one end of the rotating shaft and meshes with the first bevel gear 11, and the handwheel 13 is coaxially connected to the other end of the rotating shaft, and then the second bevel gear 12 can be controlled to rotate by the handwheel 13, the second bevel gear 12 drives the first bevel gear 11 to rotate, and the first bevel gear 11 drives the connecting rod 10 to move up and down.

[0032] As a preferred implementation scheme in this embodiment, it needs to be further explained that at least one limit nut 14 is threadedly connected to the screw segment. When one limit nut 14 is provided, the limit nut 14 abuts against the inner top surface of the device driving groove; when at least two limit nuts 14 are provided, all the limit nuts 14 abut against each other in sequence from top to bottom, and the limit nut 14 located at the top abuts against the inner top surface of the device driving groove, and then the limit nut 14 can further enhance the stability of the connecting rod 10, and prevent the connecting rod 10 from moving upward when the wind force is strong.

[0033] As a preferred implementation scheme in this embodiment, it needs to be further explained that a sealing door 15 is installed at the notch of the device driving slot, and the inner side of the sealing door 15 is connected to a limiting shaft. When the sealing door 15 is in a closed state, the limiting shaft is inserted into the handwheel 13, thereby preventing the handwheel 13 from reversing and preventing the connecting rod 10 from moving upward.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A windproof reinforcement device for foundation pit air film, characterized in that: The invention comprises an internal fixing structure, an external reinforcement structure and an embedded part arranged underground, wherein the lower part of the air membrane (1) is clamped between the internal fixing structure and the external reinforcement structure, and the internal fixing structure is connected to the embedded part via a plurality of ground anchors (2); the external reinforcement structure comprises an external reinforcement member (3) and a steel cable (4), and the external reinforcement member (3) cooperates with the internal fixing structure to clamp the lower part of the air membrane (1), and a plurality of steel cables (4) arranged longitudinally and / or transversely are arranged outside the air membrane (1), and the two ends of the steel cables (4) are respectively connected to an external reinforcement member (3), and a tightening mechanism connected to the steel cables (4) is arranged on the external reinforcement member (3) corresponding to one end of the steel cables (4), so as to tighten the steel cables (4) outside the air membrane (1) via the tightening mechanism.

2. A windproof reinforcement device for foundation pit air film according to claim 1, characterized in that: The internal fixing structure comprises an I-beam (5), a first fastening piece (6) and a second fastening piece (7), wherein the second fastening piece (7) is located on the outer side of the I-beam (5), and the inner side of the second fastening piece (7) is provided with a second protrusion that matches and fastens with the groove on the outer side of the I-beam (5), and the lower part of the air film (1) is arranged on the upper end of the I-beam (5) after passing through the outer side of the second fastening piece (7), the lower end of the second fastening piece (7), the lower end of the I-beam (5) and the inner side of the I-beam (5) in sequence; The first fastening member (6) is located on the inner side of the I-beam (5), and a first protrusion is provided on the outer side of the first fastening member (6) to match the inner groove of the I-beam (5) and clamp the air film (1); the ground anchor (2) comprises a first ground anchor and a second ground anchor, the upper part of the first ground anchor passes through the I-beam (5) and the first protrusion and is locked to the upper end of the I-beam (5) by a nut, and the upper part of the second ground anchor passes through the I-beam (5) and the second protrusion and is locked to the upper end of the I-beam (5) by a nut.

3. A windproof reinforcement device for foundation pit air film according to claim 2, characterized in that: The height of the upper end of the first fastening member (6) and the height of the upper end of the second fastening member (7) in the horizontal direction are both higher than the height of the upper end of the I-beam (5) in the horizontal direction. After the three are assembled, a U-shaped groove is formed at the upper part. At least two U-shaped reinforcement members (8) stacked in sequence along the vertical direction are installed on the upper end of the U-shaped groove. All the U-shaped reinforcement members (8) are located on the inner side of the air film (1). The U-shaped groove and each U-shaped reinforcement member (8) are filled with reinforcement material. The inner bottom surface of each U-shaped reinforcement member (8) is provided with a first through hole for facilitating the downward flow of the reinforcement material.

4. A windproof reinforcement device for foundation pit air film according to claim 2 or 3, characterized in that: The external reinforcement member (3) is an L-shaped structure, the horizontal portion of the external reinforcement member (3) is arranged at the lower end of the internal fixed structure, and the horizontal portion cooperates with the internal fixed structure to clamp the air membrane (1), and the vertical portion of the external reinforcement member (3) cooperates with the outer side of the internal fixed structure to clamp the air membrane (1).

5. A windproof reinforcement device for foundation pit air film according to claim 4, characterized in that: A second groove is arranged on the outer side of the second fastening member (7), and a third protrusion matching the second groove is arranged on the vertical portion of the external reinforcement member (3), and the third protrusion cooperates with the second groove to clamp the air film (1).

6. A windproof reinforcement device for foundation pit air film according to any one of claims 1 to 3, characterized in that: Both ends of the steel cable (4) are provided with hooks, and a first hanging ring (9) is provided above the external reinforcement member (3) corresponding to one end of the steel cable (4), the first hanging ring (9) is hung with the hook at one end of the steel cable (4), and the lower end of the first hanging ring (9) is connected to the tightening mechanism; a second hanging ring is fixed to the upper end of the external reinforcement member (3) corresponding to the other end of the steel cable (4), and the hook at the other end of the steel cable (4) is hung on the second hanging ring.

7. A windproof reinforcement device for foundation pit air film according to claim 6, characterized in that: The tightening mechanism comprises a connecting rod (10) and a driving mechanism, wherein the connecting rod (10) is slidably connected inside the external reinforcement member (3), the upper end of the connecting rod (10) passes through the external reinforcement member (3) and is connected to the corresponding first hanging ring (9), and the driving mechanism is installed inside the external reinforcement member (3) and connected to the lower part of the connecting rod (10), so as to control the connecting rod (10) to slide up and down inside the external reinforcement member (3) through the driving mechanism.

8. A windproof reinforcement device for foundation pit air film according to claim 7, characterized in that: The upper part of the connecting rod (10) is a polygonal section slidably connected to the inside of the external reinforcement (3), and the lower part of the connecting rod (10) is a screw, the diameter of the screw section is smaller than the diameter of the inscribed circle of the polygonal section; the outer side of the external reinforcement (3) is provided with a device driving groove, and the screw section is inserted from the top of the device driving groove to the bottom of the device driving groove; the driving mechanism comprises a first bevel gear (11), a second bevel gear (12) and a hand wheel (13), the first bevel gear (11) is threadedly connected to the outside of the screw section, and the first bevel gear (11) is rotatably connected to the inner bottom surface of the device driving groove through a bearing; a mounting seat is installed on the inner bottom surface of the device driving groove outside the first bevel gear (11), and a rotating shaft is rotatably connected to the mounting seat, the second bevel gear (12) is coaxially connected to one end of the rotating shaft and meshes with the first bevel gear (11), and the hand wheel (13) is coaxially connected to the other end of the rotating shaft.

9. A windproof reinforcement device for foundation pit air film according to claim 8, characterized in that: At least one limiting nut (14) is threadedly connected to the screw section. When there is one limiting nut (14), the limiting nut (14) abuts against the inner top surface of the device drive slot; when there are at least two limiting nuts (14), the left and right limiting nuts (14) abut against each other in sequence from top to bottom, and the limiting nut (14) located at the top abuts against the inner top surface of the device drive slot.

10. A windproof reinforcement device for foundation pit air film according to claim 8, characterized in that: A sealing door (15) is installed at the slot opening of the device driving slot, and a limiting shaft is connected to the inner side of the sealing door (15). When the sealing door (15) is in a closed state, the limiting shaft is inserted into the hand wheel (13).

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