Pneumatic curtain wall and construction method

Abstract

The pneumatic curtain wall comprises a connecting mechanism, a main shaft of the connecting mechanism is arranged in a cylindrical connecting base in a penetrating mode and provided with an arc-shaped groove, and a torsional spring is arranged on the main shaft in a sleeving mode so as to provide elastic damping when two connecting blades rotate relatively. The angle limiting mechanism drives clamping nails inserted into the through holes of the blades to be clamped into the arc-shaped grooves through reset springs so as to limit the rotation range. According to the pneumatic curtain wall, the problems of visual disorder caused by free rotation and noise and fatigue cracking caused by lack of buffering are effectively solved through cooperative cooperation of torsional spring damping and staple bolt limiting; the elastic damping is used for absorbing impact energy, the service life is prolonged, and it is ensured that the curtain wall presents the uniform and controlled rhythm dynamic visual effect through precise limiting.

Description

Technical Field

[0001] This invention relates to the field of building curtain wall technology, and in particular to a wind-driven curtain wall and its construction method that can utilize wind energy to generate dynamic effects. Background Technology

[0002] With the development of modern architectural aesthetics, building facade design increasingly pursues lightness, transparency, and a sense of interaction with the natural environment. As an emerging decorative form, wind-driven curtain walls have surface units that, like propeller blades or scales, can move rhythmically with the wind. This not only gives the building a dynamic visual effect as if it were breathing, but also effectively promotes natural air circulation inside the building, increases indoor lighting, and achieves a unity of functionality and aesthetics.

[0003] Existing aluminum panel curtain walls are mainly installed in a fixed manner as static decoration, or rotated through bearings.

[0004] However, these curtain wall designs often lack effective angle control mechanisms. Traditional wind-driven curtain wall connections typically rely on embedded welding or simple bolt fixing, and their rotation structures are mostly free-rotating or limited only by external rigid blocks. This traditional approach has significant drawbacks: on the one hand, uncontrolled free rotation easily leads to a messy curtain wall appearance, failing to maintain a uniform dynamic aesthetic; on the other hand, in the high-frequency oscillation environment of the wind-driven units, rigid connections or rigid limits easily generate severe stress concentrations at the connection nodes, leading to fatigue cracking of components, reducing the overall stability of the structure, and the frequent rigid impacts of metal components under wind force generate severe noise pollution. Therefore, there is an urgent need to propose a wind-driven curtain wall to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a safe, controlled, quiet, durable, and easy-to-install wind-driven curtain wall and its construction method, in order to solve the technical problems in the prior art, such as the difficulty in accurately controlling the rotation angle of the wind-driven curtain wall under wind force, the large noise from the rigid impact of mechanical components, and the fatigue cracking of the connection nodes due to high-frequency stress concentration.

[0006] The technical solution adopted by the present invention to solve the above problems is: a wind-driven curtain wall, comprising: The connecting mechanism includes: Cylindrical connector; A rotating bearing is disposed inside the connecting seat; The main shaft passes through the connecting seat and is connected to the rotating bearing to realize relative rotation between the main shaft and the connecting seat; the outer surface of the main shaft is provided with several arc-shaped grooves along its circumference. Two connecting blades, at least one of the connecting blades having a through hole in the radial direction along the main shaft, the through hole and the arc-shaped groove being arranged in the same plane; A torsion spring is sleeved on the main shaft and located inside the connecting seat. The two ends of the torsion spring are respectively connected to the two connecting blades to provide elastic damping when the two connecting blades rotate relative to each other. Angle limiting mechanisms include: A clip inserted into the through hole; A return spring is disposed between the locking pin and the connecting blade. The return spring applies a force to the locking pin in the direction of the main shaft, causing at least a portion of the locking pin to engage in the arc-shaped groove, thereby allowing the arc-shaped groove to cooperate with the locking pin to limit the rotation range of the connecting blade.

[0007] Preferably, the connecting mechanism further includes a flexible sound-insulating pad, which is disposed between the contact surfaces of the connecting blade and the connecting seat.

[0008] Preferably, the central angle span of the arc groove on the circumference of the main shaft corresponds to the maximum allowable rotation angle of the curtain wall design; the maximum allowable rotation angle is 15° to 30°; the clip is configured to abut against the inner wall of the end of the arc groove when the connecting blade rotates to its limit position.

[0009] Preferably, the wind-driven curtain wall further includes irregularly shaped curtain wall blades; the irregularly shaped curtain wall blades are fixedly connected to the end of the connecting blades away from the main shaft; the irregularly shaped curtain wall blades have a vertically extending folding structure, the folding structure forming a windward folding angle of 15° to 25°, so as to generate aerodynamic torque to drive the connecting blades to rotate around the main shaft under the action of wind force.

[0010] Preferably, the back of the irregularly shaped curtain wall fan blade is provided with a stiffening rib, the stiffening rib extends along the length direction of the irregularly shaped curtain wall fan blade, and the irregularly shaped curtain wall fan blade is fixed to the connecting blade by fasteners.

[0011] Preferably, the wind-driven curtain wall further includes a curtain wall keel; the connecting seat is installed on the curtain wall keel by an anchor; a dovetail groove is provided on the curtain wall keel along the vertical direction, and the connecting seat or the anchor has a snap-fit ​​part adapted to the dovetail groove, the snap-fit ​​part is inserted into the dovetail groove and locked by a fastener.

[0012] Preferably, the anchor is a channel steel adapter, one side of which engages with the dovetail groove, and the other side of which is fixedly connected to the connecting seat by fasteners; the inner wall of the dovetail groove is provided with anti-slip texture.

[0013] Preferably, the central axis of the main shaft is parallel to the central axis of the curtain wall keel; the head of the clip is provided with a chamfer or rounded corner.

[0014] Specifically, a construction method for the aforementioned wind-driven curtain wall includes the following steps: Install the curtain wall keel and fix the connector to the curtain wall keel; Fix the irregularly shaped curtain wall fan blades to the connecting blades; The clips are inserted into the corresponding arc-shaped grooves, and the target rotation angle of the irregularly shaped curtain wall fan blades is limited by the maximum allowable rotation angle of the arc-shaped grooves.

[0015] Preferably, the construction method further includes: Rotate the irregularly shaped curtain wall fan blades to check the smoothness of the clips sliding in the arc grooves, and confirm whether the clips abut against the inner wall of the arc groove end to form a limit when the irregularly shaped curtain wall fan blades are rotated to the maximum allowable rotation angle; and after releasing the irregularly shaped curtain wall fan blades, check whether the torsion spring drives the connecting blades to reset.

[0016] The beneficial effects of the embodiments of the present invention are as follows: 1. By employing a technical approach that integrates an angle limiting mechanism and torsion spring damping within the connecting mechanism—specifically, by creating an arc-shaped groove on the circumference of the main shaft, using a return spring to drive the pins inserted in the through hole into the arc-shaped groove, and cooperating with the torsion spring sleeved on the main shaft to provide elastic damping when the connecting blades rotate relative to each other—this effectively solves the technical problems in existing technologies, such as the messy appearance caused by the free rotation of wind-driven curtain walls, the high noise from rigid impacts of metal components due to the lack of internal buffering mechanisms, and the fatigue cracking caused by stress concentration at connection nodes. Furthermore, it achieves precise control and flexible buffering of the wind-driven curtain wall's rotation range. The elastic damping of the torsion spring absorbs the wind impact energy, significantly reducing operating noise and extending the structural service life. The precise positioning of the arc-shaped groove and pins ensures that the curtain wall presents a uniform, controlled, and rhythmic dynamic visual effect under wind force.

[0017] 2. By employing the technology of using irregularly shaped curtain wall blades with a vertical folding structure of 15° to 25° windward angle, the technical problem of ordinary planar curtain wall blades in the prior art of sluggish aerodynamic response at low wind speeds and the inability to generate sufficient torque to overcome the internal mechanical resistance of the connecting mechanism, thus resulting in no movement in light winds, is effectively solved. This allows sufficient driving torque to be generated by utilizing the optimized aerodynamic characteristics of the folding angle under low wind speed conditions, driving the connecting blades to rotate sensitively around the main axis. This gives the wind-driven curtain wall excellent wind response capability and visual fluidity. At the same time, the folding structure enhances the wind resistance stiffness of the blades themselves, achieving a synergistic improvement in aerodynamic sensitivity and structural stability.

[0018] 3. By employing a dry precision connection technology that involves pre-drilling dovetail grooves along the length of the curtain wall keel and using connectors with compatible snap-fit ​​parts for insertion and bolt locking, the technology effectively solves the technical problems of traditional welding or ordinary bolt connections, which can lead to skewed rotation axes due to installation errors. Furthermore, it addresses the issue of fatigue failure at connection nodes caused by loosening due to minute gaps when the fan blades of irregularly shaped curtain walls rotate at high frequencies driven by light winds. This achieves stepless adjustment and micron-level precise positioning of the connection components on the keel, ensuring high coaxiality and connection rigidity of the rotating mechanism. It provides a fatigue-resistant and vibration-resistant stable support for the highly sensitive aerodynamic system, significantly extending the lifespan of the wind-driven curtain wall. Attached Figure Description

[0019] Figure 1 A schematic top view of a wind-driven curtain wall according to an embodiment of the present invention is shown.

[0020] Figure 2 A schematic cross-sectional view of a connecting mechanism according to an embodiment of the present invention is shown.

[0021] Figure 3 A schematic structural diagram of the connection mechanism proposed in an embodiment of the present invention is shown when it is connected to the curtain wall keel.

[0022] Figure 4 A schematic structural diagram of the connecting mechanism in a closed state according to an embodiment of the present invention is shown.

[0023] Figure 5 A schematic structural diagram of an irregularly shaped curtain wall fan blade according to an embodiment of the present invention is shown.

[0024] Figure 6 A schematic top view of a curtain wall keel according to an embodiment of the present invention is shown.

[0025] Figure 7 A schematic side view of a curtain wall keel according to an embodiment of the present invention is shown.

[0026] Figure 8 A flowchart illustrating a construction method for a wind-driven curtain wall according to an embodiment of the present invention is shown.

[0027] Among them: 1. Connecting mechanism; 110. Connecting seat; 120. Rotary bearing; 130. Main shaft; 131. Arc groove; 140. Connecting blade; 150. Torsion spring; 160. Angle limiting mechanism; 161. Clip; 170. Flexible sound insulation pad; 2. Irregularly shaped curtain wall fan blade; 210. Stiffening rib; 3. Curtain wall keel; 310. Dovetail groove; 4. Snap-fit ​​part. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Existing aluminum panel curtain walls mainly employ fixed installations for static decoration or utilize bearings for rotation. However, these designs often lack effective angle control mechanisms. Uncontrolled free rotation can easily lead to a messy appearance, failing to maintain a uniform dynamic aesthetic. On the other hand, in the high-frequency oscillation environment of wind-driven units, rigid connections or rigid limits can easily generate severe stress concentrations at connection nodes, leading to fatigue cracking of components, reducing the overall stability of the structure. Furthermore, frequent rigid impacts of metal components under wind force can generate severe noise pollution.

[0032] Therefore, in a preferred embodiment of this application, a wind-driven curtain wall is provided; please refer to [link / reference]. Figures 1 to 4 The core of this wind-driven curtain wall lies in a connection mechanism 1 that integrates rotation, buffering, and limiting functions. The connection mechanism 1 is constructed as a compact mechanical unit, mainly composed of a cylindrical connection seat 110, a rotating bearing 120, a main shaft 130, a connecting blade 140, a torsion spring 150, and an angle limiting mechanism 160.

[0033] The rotating bearing 120 is disposed inside the connecting seat 110; the main shaft 130 passes through the connecting seat 110 and is connected to the rotating bearing 120 to realize relative rotation between the main shaft 130 and the connecting seat 110; the outer surface of the main shaft 130 has several arc-shaped grooves 131 along its circumference; at least one connecting blade 140 has a through hole in the radial direction of the main shaft 130, the through hole and the arc-shaped grooves 131 being disposed in the same plane; a torsion spring 150 is sleeved on the main shaft 130 and located inside the connecting seat 110. The two ends of the torsion spring 150 are respectively connected to the two connecting blades 140 to provide elastic damping when the two connecting blades 140 rotate relative to each other; the angle limiting mechanism 160 includes a pin 161 inserted in the through hole and a return spring disposed between the pin 161 and the connecting blade 140. The return spring applies a force to the pin 161 in the direction of the main shaft 130, so that at least a portion of the pin 161 is engaged in the arc-shaped groove 131, and the arc-shaped groove 131 cooperates with the pin 161 to limit the rotation range of the connecting blade 140.

[0034] Specifically, the connecting seat 110 serves as the fixed or supporting foundation of the entire mechanism. It is made of high-strength metal material (such as stainless steel or aluminum alloy) into a cylindrical structure, and its interior forms a cavity that can encapsulate and protect the internal precision components, preventing external dust or rainwater from directly corroding the core moving parts.

[0035] The rotating bearing 120 is precisely fitted inside the connecting seat 110 to support the spindle 130.

[0036] The main shaft 130 passes through the central axis of the connecting seat 110 and is connected to the inner ring of the rotating bearing 120. This arrangement allows the main shaft 130 to rotate smoothly with low friction relative to the connecting seat 110. The main shaft 130 is the core component of the entire power transmission system, and its outer surface has one or more arc-shaped grooves 131 along its circumferential sidewall. These arc-shaped grooves 131 are not simple surface scratches, but grooves with a certain depth. The arc length extending on the circumference of the main shaft 130 directly determines the maximum allowable rotation angle range of the connecting mechanism 1.

[0037] The connecting mechanism 1 includes two connecting blades 140, which are associated with either the main shaft 130 or the connecting seat 110, respectively, for connecting the external irregularly shaped curtain wall fan blades 2. To achieve a limiting function, at least one connecting blade 140 has a through hole in the radial direction of the main shaft 130 (i.e., perpendicular to the axis of the main shaft 130). The position of this through hole is precisely calculated so that, in the assembled state, it is in the same radial plane as the arcuate groove 131 on the main shaft 130, ensuring alignment between the two.

[0038] To address the vibration and reset issues caused by wind, a torsion spring 150 is fitted onto the main shaft 130 and located within the internal space of the connecting seat 110. The two ends of the torsion spring 150 are fixedly connected to two connecting blades 140 (or one connected to the main shaft 130 and the other to the connecting seat 110). When the two connecting blades 140 rotate relative to each other, the torsion spring 150 is torsionally compressed or stretched, thereby generating a reverse elastic restoring force and providing elastic damping.

[0039] The angle limiting mechanism 160 is a key component of this embodiment, comprising a locking pin 161 and a return spring. The locking pin 161 is primarily pin-shaped and slidably inserted into the through hole of the connecting blade 140. The return spring is located between the tail of the locking pin 161 and the connecting blade 140 (or inside the through hole), and is always in a compressed or pre-tightened state, applying a thrust to the locking pin 161 in the direction of the center of the main shaft 130. Under this thrust, the head of the locking pin 161 protrudes from the through hole and partially embeds into the arc-shaped groove 131 on the surface of the main shaft 130. At this time, the locking pin 161 acts like a slider running in a track (arc-shaped groove 131), and the inner walls of the two ends of the arc-shaped groove 131 form the end-point retaining wall of the slider's movement.

[0040] In the absence of wind or a light breeze, the torsion spring 150 is in an initial equilibrium state, and its elastic force keeps the main shaft 130 and the connecting blade 140 in a preset intermediate position (i.e., zero position). At this time, the clip 161 is located in the middle area of ​​the arc groove 131 and does not contact the end wall of the arc groove 131.

[0041] When external wind force acts on the curtain wall blades, the aerodynamic force is converted into torque and transmitted to the connecting blade 140, driving it to rotate around the main shaft 130 (or causing the main shaft 130 to rotate). At this time, the connecting blade 140 and the connecting seat 110 produce a relative angular displacement, and the torsion spring 150 sleeved on the shaft undergoes torsional deformation accordingly. The torsion spring 150 utilizes the elastic modulus of the material to generate a reverse damping torque, which increases linearly with the increase of the rotation angle, thereby smoothly absorbing wind energy and preventing the blades from undergoing violent acceleration and swaying when the wind force changes abruptly.

[0042] As the rotation angle continues to increase, the pins 161 inserted into the connecting blade 140 slide relative to each other in the circumferential direction within the arcuate groove 131 of the main shaft 130. When the rotation angle reaches the design limit (i.e., half of the central angle corresponding to the arcuate groove 131), the sidewall of the pin 161 will directly abut against the inner wall of the end of the arcuate groove 131. At this time, the sidewall of the arcuate groove 131 provides a rigid reaction force, forcibly preventing the pin 161 from moving further, thereby locking the connecting blade 140 at the maximum rotation angle and preventing excessive rotation.

[0043] When the wind weakens or disappears, the elastic potential energy previously stored in the torsion spring 150 is released, driving the connecting blade 140 to rotate in the opposite direction, causing the clip 161 to retract within the arc groove 131 until it returns to the initial equilibrium position, so that the appearance of the curtain wall automatically returns to a neat state.

[0044] The wind-driven curtain wall in this embodiment is particularly suitable for outdoor wind-driven scenarios such as the exterior decoration of high-rise buildings, the ventilation facade of parking garages, and landscape sculptures.

[0045] To achieve force balance, multiple arc-shaped grooves 131 can be formed at symmetrical positions on the main shaft 130, and multiple locking pins 161 can be correspondingly installed to disperse the impact stress during positioning. Furthermore, the heads of the locking pins 161 can be designed as spherical or chamfered, and the bottoms of the arc-shaped grooves 131 can be designed as matching circular arc sections to reduce frictional resistance when the locking pins 161 slide within the grooves and improve response sensitivity. Moreover, the stiffness coefficient of the torsion spring 150 can be selected based on the average wind pressure at the building's location, or the damping can be adjusted by replacing the torsion springs 150 with different wire diameters.

[0046] In this embodiment, by integrating an angle limiting mechanism 160 consisting of a main shaft 130 arc groove 131, radial pins 161, and a return spring inside the connecting mechanism 1, and cooperating with a torsion spring 150 sleeved on the main shaft 130 to provide elastic damping, the technical problems of the prior art, such as the messy appearance caused by the free rotation of wind-driven curtain walls, and the serious noise caused by the rigid impact of metal components under wind force due to the lack of internal buffering mechanisms, as well as the stress concentration and fatigue cracking of connection nodes, are effectively solved. This achieves precise physical locking and flexible buffering control of the rotation range of the wind-driven curtain wall. The elastic damping of the torsion spring 150 smoothly absorbs the wind impact energy, significantly reducing operating noise and extending the service life of mechanical components. Furthermore, the precise limiting of the arc groove 131 and the pins 161 ensures that the curtain wall always moves within a safe and aesthetically pleasing preset angle under wind force, maintaining the uniformity of the building facade and structural stability.

[0047] In some embodiments, please refer to Figure 2 The arc-shaped groove 131 (the central angle span on the circumference of the main shaft 130 corresponds to the maximum allowable rotation angle of the curtain wall design; the maximum allowable rotation angle is 15° to 30°; the clip 161 is configured to abut against the inner wall of the end of the arc-shaped groove 131 when the connecting blade 140 rotates to the limit position.

[0048] Specifically, the arc-shaped groove 131 is not arbitrarily created. Its length (i.e., the span of the central angle) extending around the main axis 130 is calculated in reverse based on the maximum allowable rotation angle of the curtain wall design.

[0049] The arc-shaped groove 131 extends circumferentially along the main shaft 130, and its inner walls at both ends form physical stop surfaces. In this embodiment, the maximum permissible rotation angle is set between 15° and 30°. This is a specific range of slight oscillation, different from a completely static fixed curtain wall and also different from a wind-driven device that can rotate 360°. To accommodate this angle, a pin 161 is inserted as a moving part onto the connecting blade 140, with the diameter of its end extending into the arc-shaped groove 131 matching the width of the arc-shaped groove 131. The movable stroke of the pin 161 within the arc-shaped groove 131 (i.e., the arc length of the arc-shaped groove 131 minus the diameter of the end of the pin 161) precisely corresponds to the range of rotation angles of the connecting blade 140 relative to the main shaft 130. This means that the physical length of the arc-shaped groove 131 directly defines the movement boundary of the blade.

[0050] The structure operates according to the mechanical principles of sliding, contacting, and locking. When external wind power drives the connecting blade 140 to rotate the clip 161, the end of the clip 161 slides tangentially in the arc groove 131 of the main shaft 130.

[0051] When the rotation angle is less than the set limit angle (e.g., between 15° and 30°), the pin 161 is in the middle stroke section of the arc groove 131 and does not contact the groove wall. At this time, the blade can move freely with the wind, showing a light and dynamic effect.

[0052] Once the wind force increases suddenly, causing the blade rotation angle to reach the maximum allowable value, the side wall of the clip 161 will immediately come into physical contact (abut) with the inner wall of the end of the arc groove 131.

[0053] At this time, the inner wall of the end of the arc-shaped groove 131 applies a reverse normal support force to the clip 161. This force is transmitted to the connecting blade 140 through the clip 161, forming a huge reverse torque that forcibly overcomes the wind torque and forces the blade to stop rotating. This process strictly limits the movement of the blade to a preset fan-shaped area, preventing it from crossing the safety boundary.

[0054] This technical solution is particularly suitable for scenarios with strict safety and uniform visual requirements for building facades. It is applicable to various meteorological conditions, from light to strong winds. The 15° to 30° angle setting is based on the golden range derived from fluid dynamics analysis: within this range, the blades can produce a distinct breathing dynamic visual effect without generating an excessively large windward area due to an excessive angle, thus avoiding structural damage due to excessive wind loads during extreme weather events such as typhoons.

[0055] Although this embodiment describes a fixed arc-shaped groove 131, in an alternative, multiple spindles 130 with different arc-shaped groove lengths 131 can be used (e.g., corresponding to 15 degrees, 20 degrees, 25 degrees, and 30 degrees respectively). On-site, installers can select the appropriate spindle 130 based on the specific wind pressure height coefficient of the floor, thereby achieving layered angle control. Furthermore, to reduce rigid noise when the clips 161 abut against the end wall of the arc-shaped groove 131, high-strength hard rubber blocks or nylon pads can be embedded in the inner wall of the end of the arc-shaped groove 131 to achieve soft contact without changing the limiting angle.

[0056] In this embodiment, by employing a technique that precisely corresponds the central angle span of the arc groove 131 of the main shaft 130 to the maximum allowable rotation angle of 15 to 30 degrees, and by configuring the clips 161 to physically abut against the inner wall of the end of the arc groove 131 at the rotation limit position, the technical problems of visual disorder caused by excessive rotation angle in the existing technology of wind-driven curtain walls, and the safety problems of blade overturning and even falling off due to lack of clear mechanical stop points under strong wind conditions, are effectively solved. This achieves standardized control of the curtain wall's movement posture, ensuring that all units only move within a safe and aesthetically pleasing micro-range under wind force, thus ensuring the uniformity of the building facade and greatly improving the structure's wind resistance safety performance under extreme weather conditions through mechanical hard limiting.

[0057] In a further embodiment, a key component, a flexible sound-insulating pad 170, is introduced into the connecting mechanism 1 to improve its acoustic quality and mechanical durability. Please refer to [link to relevant documentation]. Figures 1 to 3 The flexible sound insulation pad 170 is disposed between the contact surfaces of the connecting blade 140 and the connecting seat 110.

[0058] From a spatial layout perspective, the flexible sound insulation pad 170 is physically clamped on the axial contact interface between the connecting blade 140 and the connecting seat 110. Typically, both the connecting seat 110 and the connecting blade 140 are rigid metal components, and their end faces have relative movement along the axis of the main shaft 130.

[0059] The flexible sound insulation pad 170 is specifically constructed as a flat, thin sheet structure with a certain thickness. Regarding material selection, considering the special nature of wind-driven curtain walls being exposed to the outdoors for extended periods, the flexible sound insulation pad 170 preferably uses industrial-grade polymer elastic materials with excellent weather resistance, UV aging resistance, and high resilience, such as EPDM rubber, weather-resistant silicone, or polyurethane elastomers. These materials not only possess suitable Shore hardness, enabling them to maintain structural integrity and prevent excessive creep when subjected to the axial preload applied by the connecting blades 140, but also exhibit good energy dissipation characteristics in their internal molecular structure.

[0060] The flexible sound insulation pad 170 operates primarily based on physical isolation and damping energy dissipation. During the operation of the wind-driven curtain wall, when the connecting blade 140 reciprocates relative to the connecting seat 110 under wind power, the flexible sound insulation pad 170 is compressed and positioned between the two metal end faces before the connecting blade 140 rotates towards and contacts the connecting seat 110. This provides physical isolation, preventing direct contact between the hard metal end face of the connecting blade 140 and the metal end face of the connecting seat 110. Without this isolation layer, under the lateral component of wind load, the two metal surfaces are prone to dry friction, generating high-frequency metallic whistling or grinding noise. Secondly, it also functions as a damping energy dissipator.

[0061] This component is designed with the stringent requirements of all-weather outdoor use in mind. It is suitable for various climates, from extremely cold to extremely hot. The material properties of the flexible sound insulation pad 170 ensure that it will not become brittle and break at low temperatures, nor will it soften and stick together at high temperatures. In addition, its installation position is located in the gap between the connector 110 and the blade. This semi-enclosed installation environment also protects the pad from direct and continuous erosion by rainwater, thus ensuring its long service life.

[0062] In this embodiment, by employing a flexible sound-insulating pad 170 made of weather-resistant polymer elastic material between the contact surfaces of the connecting blade 140 and the connecting seat 110, the harsh noise pollution caused by direct dry friction of the end faces of the metal moving parts of the wind-driven curtain wall under long-term high-frequency rotation and wind load is effectively solved. This also addresses the technical problems of accelerated wear and fatigue loosening of the connection nodes due to the direct transmission of micro-vibrations caused by the lack of axial buffer medium. As a result, the wind-driven curtain wall achieves an extremely quiet operation and a smooth dynamic response. By cutting off the transmission path of high-frequency vibration, the acoustic comfort of the building's surrounding environment is significantly improved, and the maintenance cycle and service life of the mechanical connection system are greatly extended.

[0063] To achieve adaptive wind energy response of the wind-driven curtain wall under all operating conditions, especially sensitive start-up in low wind speed environments, this embodiment features a specially designed irregularly shaped curtain wall fan blade 2 at the end of the connecting mechanism 1. Please refer to... Figure 1 and Figure 5 In some embodiments, a wind-driven curtain wall further includes an irregularly shaped curtain wall fan blade 2; the irregularly shaped curtain wall fan blade 2 is fixedly connected to the end of the connecting blade 140 away from the main shaft 130; the irregularly shaped curtain wall fan blade 2 has a vertically extending folding structure, the folding structure forming a windward folding angle of 15° to 25°, so as to generate aerodynamic torque under the action of wind to drive the connecting blade 140 to rotate around the main shaft 130.

[0064] From a spatial perspective, the irregularly shaped curtain wall fan blade 2 is fixedly connected to the end of the connecting blade 140 away from the main shaft 130, serving as the power capture unit and visual display unit of the entire wind system.

[0065] Unlike traditional flat wind turbine blades, this irregularly shaped curtain wall blade 2 employs a vertically extending folded structure in its geometry. This folded structure is not a simple bend, but a specific surface designed based on aerodynamic principles. Specifically, this folded structure forms one or more vertical ridges on the blade surface, giving the blade cross-section a non-planar shape similar to an airfoil or a V-shape. The most critical geometric parameter is that this folded structure forms a windward angle of 15° to 25°. This angle is a golden aerodynamic range determined through fluid dynamics calculations and wind tunnel tests: it refers to the angle of attack of the blade folded surface relative to the wind direction or the angle between the two blade blades.

[0066] In terms of material composition, the irregularly shaped curtain wall fan blade 2 is typically made of lightweight and high-strength aluminum alloy sheet through precision bending or die stamping, and the surface can be treated with fluorocarbon spraying to meet outdoor weather resistance requirements. As an extension of the lever arm, this blade converts the captured wind pressure into a mechanical torque that rotates around the main shaft 130°.

[0067] In light wind conditions, when a low-speed airflow sweeps across the curtain wall surface, the 15° to 25° angle of the irregularly shaped curtain wall blades 2 creates a significant velocity and pressure difference as the airflow passes over the two sides of the blades. According to Bernoulli's principle, this pressure difference generates a non-zero aerodynamic lift or thrust on the blade surface. Due to the angle, even if the wind direction is nearly parallel to the curtain wall facade or the angle is very small, the blades can effectively trap the airflow, generating aerodynamic torque sufficient to overcome the static friction of the internal rotating bearing 120 and the initial preload of the torsion spring 150 in the connecting mechanism 1. This allows the curtain wall to move even in a light breeze, exhibiting a dynamic visual effect like ripples on water.

[0068] Under strong wind conditions, the kinetic energy captured by the irregularly shaped curtain wall blades 2 increases exponentially with increasing wind speed. At this point, the high-sensitivity design of the blades and the damping limiting system in the aforementioned connecting mechanism 1 work synergistically. The irregularly shaped blades are responsible for converting the enormous wind energy into kinetic energy, driving the connecting blades 140 to rotate; when the rotation angle approaches its limit, the torsion spring 150 and the locking pin 161 in the connecting mechanism 1 intervene, nonlinearly dissipating and rigidly limiting the large torque generated by the blades, preventing damage due to excessive rotation speed or angle. The entire process embodies a dynamic balance between sensitive capture and controlled release.

[0069] In some embodiments, to adapt to the wind pressure distribution on different floors (stronger winds on higher floors and weaker winds on lower floors), the angle of the irregularly shaped curtain wall fan blades 2 can be configured in a gradient manner. For example, in lower-floor areas, the blade angle is set to close to 25° to maximize the wind-receiving area and starting torque; while in higher-floor, high-wind-pressure areas, the blade angle is set to close to 15° to appropriately reduce the drag coefficient and reduce structural load. Furthermore, the surface of the irregularly shaped curtain wall fan blades 2 can be further perforated to increase visual transparency and provide pressure relief under high wind speeds, further balancing sensitivity and safety.

[0070] In this embodiment, by employing a uniquely shaped curtain wall blade 2 with a vertically extending folding structure and a windward angle of 15° to 25° as the power capture unit, the technical problems of planar wind turbine blades in the prior art—namely, their inability to overcome mechanical resistance due to low aerodynamic efficiency at low wind speeds, resulting in stillness in light winds, and the generation of turbulent vibrations due to lack of aerodynamic optimization at high wind speeds—are effectively solved. This achieves full-condition adaptive response of the wind-driven curtain wall. The specific angle design gives the system extremely high sensitivity to start-up in light winds, allowing the building skin to exhibit a smooth, breathing feel even in light breezes. Furthermore, through the coordinated operation of this aerodynamic shape and the rear-end mechanical damping system, the inherent safety of the structure under strong wind impact is ensured while maintaining visual appeal.

[0071] Furthermore, to enhance the structural stiffness of the irregularly shaped curtain wall fan blade 2 under wind loads and ensure the reliability of the connection, in some embodiments, stiffening ribs 210 are provided on the back of the irregularly shaped curtain wall fan blade 2. Please refer to [link to relevant documentation]. Figure 1 The stiffening rib 210 extends along the length of the irregular curtain wall fan blade 2, and the irregular curtain wall fan blade 2 is fixed to the connecting blade 140 by fasteners.

[0072] Specifically, stiffening ribs 210 are provided on the leeward side (i.e., the back) of the irregular curtain wall blade 2. These stiffening ribs 210 are not point supports, but rather slender members that extend continuously or intermittently along the length direction (usually vertical) of the irregular curtain wall blade 2.

[0073] In the preferred structural form, the stiffening rib 210 is made of hollow aluminum square tube or high-strength aluminum alloy profile, whose coefficient of thermal expansion matches that of the panel material of the irregular curtain wall fan blade 2, to avoid stress caused by temperature difference deformation. The stiffening rib 210 is attached to the back of the fan blade by a combination of structural adhesive bonding and mechanical fixing, forming an integral structure. In addition, the irregular curtain wall fan blade 2 (along with the stiffening rib 210 on the back) is not welded, but physically fixed to the front connecting blade 140 by fasteners. The fasteners here preferably use stainless steel through bolt assemblies or high-strength blind rivets. The fasteners pass through the reserved holes in the connecting blade 140 and the corresponding holes in the irregular curtain wall fan blade 2 (or its stiffening rib 210), and are locked with anti-loosening washers and nuts, thereby firmly mounting the huge wind-receiving panel on the rotating mechanism.

[0074] When wind pressure acts on the blade surface, the stiffening ribs 210 extending along the length significantly increase the moment of inertia of the cross section. Like the spine of the human body, the stiffening ribs 210 bear the main bending moment, transforming the out-of-plane load originally borne by the thin plate into the beam-like force of the stiffening ribs 210, which greatly reduces the deflection deformation of the blade.

[0075] The wind load first acts on the panel, then is transferred to the stiffening ribs 210 at the back, and finally converges at the node fixed to the connecting blades 140. During this process, the fasteners bear the shear and pull forces, safely and stably transferring the kinetic energy captured by the wind-driven components to the main shaft 130 of the connecting mechanism 1, driving the curtain wall to rotate, while preventing the blades from falling off due to centrifugal force or wind suction during high-speed oscillation.

[0076] In this embodiment, by employing a technique of setting stiffening ribs 210 extending along the length direction on the back of the irregularly shaped curtain wall fan blade 2 and fixing them to the connecting blades 140 with fasteners, the technical problems of thin-walled metal curtain wall fan blades being prone to elastic deformation, thumping noise, and loosening and falling off due to stress concentration at connection points under high wind loads and high-frequency oscillation conditions in the prior art are effectively solved. This results in a significant improvement in the overall structural rigidity and wind pressure resistance of the curtain wall fan blades, eliminating the skin effect and flutter noise of large-area panels, ensuring a flat and crisp appearance, and ensuring the reliability of kinetic energy transmission and the convenience of later maintenance through detachable mechanical fastening, thus guaranteeing the structural safety and operational stability of the wind-driven curtain wall throughout its entire life cycle.

[0077] To construct a complete and stable wind-driven curtain wall support system, this embodiment introduces a specially designed curtain wall keel 3 and connection anchoring system. Please refer to... Figure 3 , Figure 6 and Figure 7The connecting seat 110 is installed on the curtain wall keel 3 by means of anchors; the curtain wall keel 3 is provided with a dovetail groove 310 in the vertical direction, and the connecting seat 110 or the anchor has a snap-fit ​​part 4 adapted to the dovetail groove 310. The snap-fit ​​part 4 is inserted into the dovetail groove 310 and locked by fasteners.

[0078] As the fixed frame of the entire system, the curtain wall keel 3 is typically made of high-strength steel square tubing or aluminum alloy profiles and is fixed vertically to the main building structure. A key feature of this curtain wall keel 3 is that its surface has one or more dovetail grooves 310 running along its length. The cross-section of these dovetail grooves 310 exhibits an inverted trapezoidal geometry, wider at the inside and narrower at the outside, forming a linear sliding rail structure.

[0079] The connector 110 is not directly welded to the keel, but rather connected via an anchor (or the connector 110 itself integrates an anchoring structure). This anchor (or the base portion of the connector 110) has a protruding snap-fit ​​portion 4, the shape and size of which perfectly matches the dovetail groove 310 on the curtain wall keel 3. The snap-fit ​​portion 4 can slide into the end of the dovetail groove 310 or be screwed into the groove at a specific angle. For final fixation, the system is equipped with high-strength fasteners (such as hexagonal socket head cap screws or T-bolt assemblies). The fastener passes through the anchor, and when tightened, it generates a strong pull-out or push-out force, utilizing the inclined surface effect of the dovetail groove 310 to firmly wed the snap-fit ​​portion 4 against the groove wall, forming a rigid physical connection.

[0080] Construction workers insert the snap-fit ​​part 4 of the connector 110 into the dovetail groove 310 of the curtain wall keel 3. At this time, the connector 110 is not locked and can slide freely in the groove in the vertical direction. This allows construction workers to make millimeter-level vertical adjustments according to the actual installation height of the irregular curtain wall fan blades 2, eliminating the influence of civil construction errors on the curtain wall segmentation.

[0081] Given the highly sensitive aerodynamic characteristics of the irregularly shaped curtain wall fan blades 2 (moving even in a slight breeze), their rotation frequency is extremely high, which places extremely high demands on the levelness and coaxiality of the main shaft 130. If traditional welding is used, once a weld is misaligned, it is difficult to correct, leading to uneven wear of the bearings. However, the dovetail groove 310 structure allows for fine adjustment of the angle of the connecting seat 110 before locking.

[0082] Once the position is correctly calibrated, tighten the fasteners using a torque wrench. At this point, the inverted trapezoidal structure of the dovetail groove 310 provides a mechanical self-locking function, capable of withstanding the enormous wind tension and pressure perpendicular to the curtain wall surface, preventing the connector 110 from coming off; simultaneously, the friction generated by the fasteners prevents the connector 110 from slipping down along the direction of gravity. The wind load is smoothly transferred to the keel through the blades, main shaft 130, connector 110, and anchors, and ultimately to the main building structure.

[0083] In this embodiment, by employing a technique of creating vertical dovetail grooves 310 on the curtain wall keel 3 and using anchors with adaptable snap-fit ​​parts 4 to dry-plug and fasten the connecting seat 110, the technical problem of traditional welding installation in the prior art being unable to guarantee the high-precision coaxiality of the rotation axis, and the connection nodes being prone to fatigue failure due to uneven wear and jamming caused by welding errors when cooperating with the high-sensitivity irregular-shaped curtain wall fan blades 2 for high-frequency rotation, is effectively solved. This provides the wind-driven curtain wall system with high-precision installation correction capability and a stable connection without stress concentration, achieving both rapid assembly without sparks on site and reducing mechanical wear caused by welding errors from the root, ensuring the safe and stable operation of the high-sensitivity wind-driven system throughout its entire life cycle.

[0084] The anchor is a channel steel adapter, which further refines and strengthens the transition connection structure between the connecting seat 110 and the curtain wall keel 3. One side of the channel steel adapter engages with the dovetail groove 310, and the other side of the channel steel adapter is fixedly connected to the connecting seat 110 by fasteners; the inner wall of the dovetail groove 310 is provided with anti-slip texture.

[0085] As the core connecting medium, the anchor is specifically selected as a channel steel adapter. This channel steel adapter is typically made of high-strength carbon structural steel or stainless steel through cold bending or hot rolling processes. This channel steel structure has an extremely high bending section modulus, enabling it to withstand enormous lateral wind loads.

[0086] The channel steel adapter plays a crucial role in spatial layout, bridging the gap between upper and lower sections. One side of the adapter (usually the bottom plane of the channel steel or a specially designed clamping side) is configured to engage with the dovetail groove 310 on the curtain wall keel 3. This engagement is not a simple fit, but rather involves the T-bolt assembly on the channel steel adapter or a trapezoidal clamp welded to it extending into the dovetail groove 310, utilizing the inverted interlocking structure of the dovetail groove 310 to achieve the connection.

[0087] The other side of the channel steel adapter (usually the two flange sides or the open side of the channel steel) serves as a mounting platform, which is fixedly connected to the aforementioned connecting seat 110 (cylindrical base) by high-strength fasteners (such as hexagonal head bolt sets). The connecting seat 110 is provided with corresponding mounting ears or through holes, through which bolts pass to fasten to the channel steel adapter, thereby firmly locking the connecting mechanism 1 onto the adapter.

[0088] To address the issue of vertical slippage due to gravity, the inner wall of the dovetail groove 310 is not a smooth plane but is machined with anti-slip textures through precision rolling or milling. These textures typically appear as longitudinal stripes continuously distributed along the length of the keel, or as a mesh-like knurled pattern. Correspondingly, the contact surface of the channel steel adapter extending into the groove also has matching meshing teeth.

[0089] The working principle of this structure is based on mechanical interlocking and frictional self-locking mechanisms.

[0090] During construction, align the snap-fit ​​end of the channel steel adapter with the dovetail groove 310 opening of the keel and slide it in, or rotate it 90 degrees and place it in the groove and then straighten it so that its snap-fit ​​block hooks onto the barbed edge of the dovetail groove 310.

[0091] When the operator tightens the locking bolts connecting the channel steel adapter to the dovetail groove 310, the channel steel adapter is pulled outward. At this time, the contact surface of the channel steel adapter is strongly pressed against the inner wall of the dovetail groove 310.

[0092] Under the action of huge pre-tightening force, the anti-slip texture of the inner wall of the dovetail groove 310 will embed or bite into the surface of the channel steel adapter (or interlock with its teeth). This micro or macro mechanical biting force provides a very large static friction coefficient, which is sufficient to resist the weight of the connecting mechanism 1 and the fan blade assembly itself as well as the vertical vibration component generated by the wind, preventing the connecting assembly from slipping or sinking vertically along the keel.

[0093] In this embodiment, by using a high-strength channel steel adapter to specifically design the anchor, and by engaging one side with the keel dovetail groove 310 and fixing the other side with the connecting seat 110 via fasteners, and by setting anti-slip textures on the inner wall of the dovetail groove 310, the technical problems of existing curtain wall connectors being prone to gravity slippage and positional sinking along the smooth keel track under long-term vertical loads and wind vibration conditions, as well as the insufficient rigidity of ordinary connectors making it difficult to resist the lateral bending moment of strong winds, are effectively solved. This achieves absolute locking and high stability of the wind-driven curtain wall support system in the vertical direction. The mechanical interlocking effect of the anti-slip texture completely eliminates the risk of slippage, while the excellent mechanical cross-sectional properties of the channel steel significantly improve the wind resistance capacity of the nodes, ensuring that the curtain wall units remain at the design elevation for a long time and avoiding blade interference caused by sinking.

[0094] The spatial geometry of the wind-driven curtain wall and the microstructure of its key moving components were precisely designed. The central axis of the main shaft 130 is parallel to the central axis of the curtain wall keel 3; the head of the clip 161 is chamfered or rounded.

[0095] Regarding the spatial layout, the central axis of the main shaft 130 and the central axis of the curtain wall keel 3 are configured to be strictly parallel. The curtain wall keel 3 is typically installed on the exterior wall of a building as a vertical main load-bearing component; therefore, the main shaft 130 also maintains a vertical posture. This parallel arrangement is ensured by precise connecting seats 110 and transition fit tolerances, ensuring that the rotation axis does not tilt or deviate relative to the supporting frame. Secondly, regarding the micro-morphology, the head of the clip 161, which is inserted into the connecting blade 140 and extends into the arc-shaped groove 131 for positioning, has undergone special geometric treatment. This head is not a sharp right-angled cut, but rather has a chamfer (beveled cut) or a rounded corner (rounded transition surface). Specifically, if it is a chamfered design, the edge of the clip 161 presents a truncated cone shape; if it is a rounded corner design, the head of the clip 161 presents a hemispherical or spherical crown shape. This geometric treatment is typically completed during the precision machining of the 161 clips by turning or grinding, and the roughness level of the contact surface is much higher than that of the shaft.

[0096] When the main shaft 130 is parallel to the keel, the centrifugal force and gravitational torque generated by the pneumatic unit during rotation can be evenly distributed along the length of the keel. This arrangement allows the torque on the connecting seat 110 to be mainly converted into pure torque around the keel axis or pressure along the axis, avoiding complex additional bending moments and shear forces caused by axis intersection or inclination, thereby simplifying the stress state of the node and improving the structural stiffness.

[0097] When the wind drives the blade to rotate until the pin 161 strikes the end of the arc-shaped groove 131, the chamfer or rounded corner of the pin 161's head plays a crucial role. Compared to a right-angled edge, the smooth chamfer or rounded corner prevents the pin 161 from cutting into or engaging with the sidewall or bottom surface of the arc-shaped groove 131 during high-speed gliding. At the moment of contact, the chamfered surface transforms the original line contact or sharp point contact into surface contact or smooth Hertzian contact, greatly reducing local contact stress. In addition, if the blade experiences slight axial vibration in a light wind, the rounded head can also guide and correct its direction, preventing the pin 161 from getting stuck in the groove.

[0098] In this embodiment, by employing a technique that aligns the central axis of the main shaft 130 with the central axis of the curtain wall keel 3 in a parallel relationship, and by machining chamfers or rounded corners on the heads of the clips 161, the technical problems in the prior art, such as uneven force distribution and excessive additional bending moment of the wind-driven components due to the misalignment of the rotation axis, as well as the sharp edges of the limiting pins easily scratching the groove wall, generating metal cutting chips, and causing mechanical jamming and sharp howling noise during high-speed limiting impact, are effectively solved. This achieves rationalization and balance of the force distribution on the wind-driven curtain wall structure, while significantly improving the tribological characteristics between moving parts, ensuring smooth and jam-free operation and low noise during the limiting process, and greatly enhancing the wear resistance and long-term reliability of the mechanical system.

[0099] Specifically, to ensure the installation accuracy and operational reliability of the wind-driven curtain wall under high-frequency dynamic conditions, this embodiment proposes a construction method for the aforementioned wind-driven curtain wall. Please refer to [link / reference]. Figure 8 This method is not merely a stacking of components, but a process of systematically integrating pneumatic sensitivity and mechanical limit safety, specifically including the following steps: Step S100: Install the curtain wall keel 3 and fix the connecting seat 110 on the curtain wall keel 3; Step S300: Fix the irregularly shaped curtain wall fan blade 2 onto the connecting blade 140; Step S300: Insert the clip 161 into the corresponding arc groove 131, and limit the target rotation angle of the irregular curtain wall fan blade 2 by the maximum allowable rotation angle of the arc groove 131. In step S400, the irregular curtain wall fan blade 2 is moved to check the smoothness of the sliding of the clip 161 in the arc groove 131, and to confirm whether the clip 161 abuts against the inner wall of the end of the arc groove 131 to form a limit when the irregular curtain wall fan blade 2 is rotated to the maximum allowable rotation angle; and after releasing the irregular curtain wall fan blade 2, to check whether the torsion spring 150 drives the connecting blade 140 to reset.

[0100] The core of step S100 lies in the establishment of the benchmark and the dry precision connection. Specifically, this includes the verticality calibration of the curtain wall keel 3, and the stepless adjustment and locking of the connector 110 with the dovetail groove 310 of the keel through the anchor (channel steel adapter).

[0101] The benchmark can be determined by using a laser plumb line or theodolite to mark a vertical baseline on the building facade, installing the curtain wall keel 3 and adjusting its verticality deviation to the allowable range of the standard.

[0102] Align the snap-fit ​​part 4 (or anchor) of the connector 110 with the dovetail groove 310 opening of the keel and slide it in. Use the sliding rail characteristics of the dovetail groove 310 to move the connector 110 to the design elevation. Then, tighten the fastener with a torque wrench to make the snap-fit ​​part 4 mechanically engage in the dovetail groove 310, thus completing the fixation.

[0103] The dovetail groove 310's up-and-down sliding adjustment function eliminates construction errors in the civil engineering structure and ensures the accuracy of the installation height of the connecting seat 110.

[0104] Ensuring coaxiality establishes the rotation axis reference for the entire wind system, preventing uneven wear or jamming of the subsequently installed irregular curtain wall fan blades 2 due to base tilt.

[0105] The core of step S200 lies in the rigid coupling of the power unit. That is, the irregularly shaped curtain wall wind blade 2 (large inertia component) responsible for capturing wind energy and the connecting blade 140 (transmission component) responsible for transmitting power are combined into one unit by mechanical fasteners.

[0106] Align the stiffening ribs 210 or the reserved holes on the back of the irregular curtain wall fan blade 2 with the mounting holes of the connecting blade 140.

[0107] Stainless steel through bolts or high-strength rivets are used to pass through the overlapping holes. Before tightening, ensure that the folding ridge of the fan blade is parallel to the axis of the main shaft 130. For the stiffening rib 210 structure, ensure that the fasteners penetrate the stiffening rib 210 body, and are not merely fixed to the thin-walled plate.

[0108] This step ensures that the aerodynamic torque captured by the irregularly shaped curtain wall fan blades 2 can be transmitted to the connecting mechanism 1 without loss or slippage. It also prevents the fan blades from detaching from the connecting mechanism 1 under the action of strong wind suction or centrifugal force.

[0109] The core of step S300 lies in the activation of the limit and damping system. This is the key operation for converting the free rotation state into a controlled swing state.

[0110] The worker uses a special tool or their fingers to press the tail of the clip 161 (or compresses the return spring) to retract its tip into the through hole. Then, the connecting blade 140 is rotated or its position is finely adjusted until the through hole is aligned with the arcuate groove 131 area on the spindle 130.

[0111] Release the latch 161, and under the elastic force of the return spring, the latch 161 engages in the arc-shaped groove 131. At this time, the latch 161 is restricted to moving within the arc length range of the arc-shaped groove 131.

[0112] The rotation range of the irregularly shaped curtain wall fan blades 2 is physically locked within the designed range of 15° to 30° to prevent the fan blades from rotating 360° or colliding with each other under strong winds.

[0113] This ensures that the hard limiting mechanism for the engagement of the arc groove 131 and the clip 161 is officially effective.

[0114] The core of step S400 lies in full-condition dynamic simulation and debugging. This is a functional verification step that includes tribological checks, limit position checks, and return capability checks.

[0115] Construction workers manually applied thrust to simulate two working conditions: light wind (gentle push) and strong wind (pushing to the limit).

[0116] Check for any sticking during rotation (check for friction between the chamfer and the groove wall); check for any solid resistance when reaching the limit position (check for failure of the hard limit switch).

[0117] After removing the external force, observe whether the fan blades return to their initial zero position smoothly and automatically under the action of the torsion spring 150.

[0118] The above detection methods can be used to promptly identify and resolve problems caused by foreign objects getting stuck, spring failure, or misalignment during installation.

[0119] Finally, it was confirmed whether the limit damping and aerodynamic sensitivity were perfectly matched to ensure that the wind-driven curtain wall was both sensitive and safe, achieving the effect of moving with the slightest breeze and stopping when the wind stopped.

[0120] The above description is merely illustrative of the invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined by the claims, all of which should fall within the protection scope of this invention.

Claims

1. A wind screen, characterized in that The application relates to a connecting mechanism for a curtain wall, comprising: a connecting seat in a cylindrical shape; a rotating bearing arranged inside the connecting seat; a main shaft arranged inside the connecting seat and connected with the rotating bearing to realize relative rotation of the main shaft and the connecting seat; an outer surface of the main shaft is provided with a plurality of arc-shaped grooves along a circumferential side of the main shaft; two connecting blades, at least one of the connecting blades is provided with a through hole in a radial direction of the main shaft, and the through hole is arranged in the same plane as the arc-shaped grooves; a torsional spring arranged on the main shaft and inside the connecting seat, two ends of the torsional spring are connected with the two connecting blades respectively to provide elastic damping when the two connecting blades rotate relative to each other; an angle limiting mechanism, comprising: a clamping nail inserted into the through hole; a reset spring arranged between the clamping nail and the connecting blade, the reset spring applies a force to the clamping nail in the direction of the main shaft, so that at least part of the clamping nail is clamped into the arc-shaped groove, and the arc-shaped groove cooperates with the clamping nail to limit the rotation range of the connecting blade. The connecting mechanism further comprises a flexible sound insulation pad arranged between the connecting blade and a contact surface of the connecting seat.

2. A wind screen according to claim 1, wherein The central angle span of the arc-shaped groove on the circumferential side of the main shaft corresponds to the maximum allowable rotation angle of the curtain wall design; the maximum allowable rotation angle is 15-30 DEG; the clamping nail is configured to abut against an inner wall of an end portion of the arc-shaped groove when the connecting blade rotates to a limit position.

3. A wind screen according to claim 2, wherein, Further comprising a special-shaped curtain wall fan blade; the special-shaped curtain wall fan blade is fixedly connected to one end of the connecting blade away from the main shaft; the special-shaped curtain wall fan blade has a folding structure extending in a vertical direction, and the folding structure forms a windward folding angle of 15-25 DEG to generate a driving aerodynamic torque for rotating the connecting blade around the main shaft under the action of wind force.

4. A wind screen according to any one of claims 1 to 3, wherein A reinforcing rib is arranged on the back of the special-shaped curtain wall fan blade, the reinforcing rib extends along the length direction of the special-shaped curtain wall fan blade, and the special-shaped curtain wall fan blade is fixed to the connecting blade through a fastener.

5. A wind screen according to claim 4, wherein, Further comprising a curtain wall keel; the connecting seat is mounted on the curtain wall keel through an anchor; a dovetail groove is arranged on the curtain wall keel in a vertical direction, the connecting seat or the anchor has a clamping part matched with the dovetail groove, and the clamping part is inserted into the dovetail groove and locked through a fastener.

6. A wind screen according to claim 5, wherein, The anchor is a channel steel adapter, one side of the channel steel adapter is matched with the dovetail groove, and the other side of the channel steel adapter is fixedly connected with the connecting seat through a fastener; an anti-skid pattern is arranged on the inner side wall of the dovetail groove.

7. A wind screen according to claim 6, wherein, The central axis of the main shaft is parallel to the central axis of the curtain wall keel; the head of the clamping nail is provided with a chamfer or a round corner.

8. A wind screen according to claim 6 or 7, wherein, The application further comprises the following steps:

9. A method of constructing a wind screen according to any one of claims 6 to 8, wherein, mounting the curtain wall keel and fixing the connecting seat on the curtain wall keel; fixing the special-shaped curtain wall fan blade on the connecting blade; clamping the clamping nail into the corresponding arc-shaped groove to limit the target rotation angle of the special-shaped curtain wall fan blade through the maximum allowable rotation angle of the arc-shaped groove. Further comprising:

10. The construction method according to claim 9, characterized in that, ​ Turn the special-shaped curtain wall fan blade, check the smoothness of the slide of the clamping nail in the arc-shaped groove, and confirm whether the clamping nail abuts against the inner wall of the end of the arc-shaped groove to form a limit when the special-shaped curtain wall fan blade is turned to the maximum allowable turning angle; and after releasing the special-shaped curtain wall fan blade, check whether the torsional spring drives the connecting blade to reset.

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