Quickly-mounted double-track suspended sash window meshing linkage structure and high-airtightness machining and mounting method

Abstract

The invention discloses a fast-assembly type double-track suspended sash window meshing linkage structure and a high-airtightness machining and installing method. The fast-assembly type double-track suspended sash window meshing linkage structure comprises hand cranking devices installed on the left side and the right side of a window frame, a transmission rod is installed between the two hand cranking devices, transmission arms are installed on the left side and the right side of the transmission rod, the other end of each transmission arm is hinged to a linkage rod, the other end of the linkage rod is hinged to a connecting foot, and the connecting foot is fixed to a suspended sash window. A linkage mechanism is installed at the position, located on each transmission arm, of the transmission rod, and the other end of each linkage mechanism is connected with the suspended sash window and used for further transmitting power. According to the fast-assembly type double-track suspended sash window meshing linkage structure and the high-airtightness machining and mounting method, accurate synchronous control under zero power consumption can be achieved.

Description

Technical Field

[0001] This invention relates to the technology of ultra-low-energy building doors and windows, specifically a quick-install dual-track interlocking linkage structure for hung windows and a method for fabricating and installing them to achieve high airtightness. The system also features a dual-track, synchronized, hand-cranked drive system for hung windows, sunshades, or other openable components. This system utilizes a mechanical synchronization mechanism to achieve dual-track linkage control. This system is particularly suitable for passive hung windows with manual openers. By optimizing the window's hinge structure, sealing system, and hand-cranked transmission mechanism, it achieves wide opening angles while meeting airtightness requirements. Background Art

[0002] Conventional hung windows open by rotating the sash around a pre-set horizontal axis. To open, the sash is manually pushed or pulled at the edge, or with the aid of a simple manual lever or handle, to overcome the sash's own weight, hinge friction, and the elastic force of the seal, allowing the sash to rotate around the axis to the desired angle. Closing involves the reverse operation, with gravity or manual force returning the sash to its original position against the frame. Opening and closing are often manual, though some larger hung windows may be equipped with simple power-assist devices (such as spring hinges). However, due to the lack of a synchronized control mechanism, large sashes or uneven force distribution can lead to jamming and inconsistent opening angles on both sides.

[0003] Industry Pain Points Passive external-hung windows, in pursuit of extreme energy efficiency, typically utilize thickened multi-cavity profiles and multi-layer insulating glass, resulting in an overall weight far greater than that of ordinary doors and windows. Heavy window sashes exert continuous pressure on load-bearing components such as hinges and hinges, which can easily cause deformation of these components over time, resulting in slight offsets in the sealing surfaces between the window frame and the sash. The originally precisely fitted sealing strips are subjected to uneven force, resulting in insufficient local compression and the formation of breathable gaps. At the same time, an overly heavy window sash intensifies the impact of closing, causing the strips to age prematurely and lose elasticity, further weakening the sealing effect. One-sided driving causes deformation of the suspended window, accelerated wear of ordinary rubber strips, and a 40% increase in leakage rate; The opening torque requirement for large suspended windows is over 30 N·m, which does not meet the ergonomic requirements of GB / T 39865-2021 "Technical Requirements for Architectural Shutters"; The seal between the hand crank and the hung window was weak, causing the sealing strip to partially detach when the hung window sagged under gravity, resulting in an airtightness test value exceeding 0.5m³ / (m·h). The key reason for the poor sealing performance was the punching method used to install traditional hand cranks. On-site drilling not only destroyed the original integrity of the window frame or sash, but also opened up the enclosed cavity of the profile, creating a potential channel for air circulation.

[0004] Existing hand crank installations require on-site drilling and positioning. This inaccuracy can lead to misalignment between the hand crank and the transmission mechanism, resulting in misaligned transmission centers, uneven meshing clearances, and excessive stress at the joints. These installation errors may not be noticeable during static operation, but during later window opening operations, as the hand crank drives the transmission system, these deviations are amplified, causing the window to vibrate and make unusual noises.

[0005] 2. Limitations of existing technologies Insufficient synchronization: The existing system has difficulty in achieving precise synchronous movement of the dual tracks, which may lead to deviations during operation and affect the stability and reliability of the system.

[0006] Poor operational convenience: Traditional hand-cranked drive systems have large operating torque. When the torque is too large, the operator needs to use greater force to shake the handle. If there is a sudden jam or sudden change in resistance, the hand may easily fall off the handle due to inertia or be scratched by the rapidly reverse rotating parts.

[0007] In emergency scenarios such as fire emergencies, if the hand crank cannot quickly drive the window sash open due to excessive torque, it will delay escape or rescue and create a safety blind spot.

[0008] Low assembly efficiency: Traditional installation methods are cumbersome and require high precision, so on-site assembly of a single-hung window typically takes 2-4 hours. This is because traditional installation requires drilling and positioning multiple components, such as the hand crank, transmission rod, and hinge, one by one. Each drilling step requires repeated measurement and calibration to avoid positional deviations. Furthermore, connecting the various transmission components requires the use of multiple specialized tools and high operator skills. Any positioning errors require rework and adjustment, further increasing installation time and cost. Inadequate sealing performance: Traditional hand-cranked openers create holes in window frames and sashes, compromising the airtightness of the window. These holes can damage the integrity of the original structure of the frame and sash. The profiles of window frames and sashes inherently have a continuous, enclosed cavity or sealed path. Punching holes disrupts this continuity, creating a potential airflow path between the interior of the profile and the outside world. Even when the holes are sealed with fasteners like bolts and gaskets, a completely tight fit between the fasteners and the wall of the hole is difficult to achieve. This gap, especially after long-term use, can gradually widen due to vibration, temperature fluctuations, and other factors, creating air leaks.

[0009] Furthermore, during dynamic opening, the connecting components at the opening (such as bolts and holes through which transmission rods pass) can become a source of dynamic leakage. When a suspended window opens or closes, relative motion occurs between the transmission components and the wall of the opening. The flexible materials used to seal the gap (such as sealing rings) can easily lose their elasticity due to friction and wear, causing the gap to open and close repeatedly during movement, further exacerbating air infiltration. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a quick-install double-track hanging window meshing linkage structure and a high-airtightness processing and installation method, so as to achieve precise synchronous control with zero power consumption, and improve the airtightness of the window through a hole-free design and elastic magnetic polymer strips.

[0011] In order to solve the above technical problems, the technical solution adopted by the present invention is: The quick-install double-track hanging window has a geared linkage structure, including hand cranks installed on the left and right sides of the window frame, a transmission rod installed between the two hand cranks, and transmission arms installed on the left and right sides of the transmission rod. The other end of each transmission arm is hinged to the linkage rod, and the other end of the linkage rod is hinged to the connecting foot, which is fixed to the hanging window; A linkage mechanism is installed on the transmission rod at each transmission arm, and the other end of the linkage mechanism is connected to the hanging window for further transmitting power.

[0012] The linkage mechanism includes a bracket, which is installed on the hanging window; a slide groove is provided on the bracket, one end of the adjustable screw freely passes through the slide groove and is connected to the limit head, and the limit head is on the end face of the hanging window; the other end of the adjustable screw is threadedly connected to the transmission member; the transmission member is meshed with the linkage gear and is driven to move forward and backward by the linkage gear; the linkage gear is installed on the transmission rod.

[0013] The transmission member comprises left and right semicircular rings and a straight section between the left and right semicircular rings. Racks are provided on the inner sides of the upper and lower straight sections, and the racks are meshed with the linkage gear.

[0014] A connecting plate is provided on the window frame at a position corresponding to the hand crank, and a groove is provided on the inner side of the connecting plate. The back of the hand crank is inserted into the groove and is laterally inserted into the limit position through a quick-pull pin.

[0015] The connecting plate and the window frame are formed by integral extrusion; the corresponding connecting legs and the hanging window are also formed by integral extrusion.

[0016] The window frame and the hanging window are sealed by a polymer adhesive strip.

[0017] A corrugated steel sheet and a flexible magnetic core are arranged in the polymer rubber strip.

[0018] When the polymer strip is installed on the window frame, a magnetic patch is provided on the portion of the hanging window that contacts the window frame; when the polymer strip is installed on the hanging window, a magnetic patch is provided on the portion of the window frame that contacts the hanging window.

[0019] The high airtightness processing and installation method of the quick-install double-track hung window includes the following steps: Step 1) Install the bracket at a suitable position on the upper end of the hanging window, install the transmission part and the adjustable screw on the bracket, and adjust the center distance and meshing clearance of the transmission part and the adjustable screw to ensure smooth transmission without jamming; Step 2) Connect the transmission rod to the linkage gear and make the linkage gear mesh with the transmission member; adjust the position and angle of the transmission rod so that it can transmit power smoothly; Step 3) Connect one end of the transmission arm to the transmission rod through a pin, etc., and hinge the other end of the transmission arm to the connecting rod. Select a suitable mounting hole on the connecting rod and install it to the hanging window. After installation, check the movement flexibility of the transmission arm and the connecting rod to ensure there is no interference. Step 4) Insert the back of the hand crank into the groove of the mounting plate and insert the quick-pull pin to achieve quick installation; Step 5) Adjust the position and angle of the hanging window so that it can be opened and closed smoothly under the drive of the transmission arm; Step 6) Shake the hand crank of the hand crank to check whether the hanging window opens and closes smoothly and whether the movement between the various components is synchronized; if any jamming or asynchrony is found, adjust the position and connection relationship of the transmission components until the hanging window can be opened and closed smoothly and synchronously; Step 7) Use professional testing methods such as the pressure difference method to test the airtightness of the hung window; during the test, simulate different wind pressure conditions and measure the air permeability of the window; if the airtightness does not meet the requirements, check the installation of components such as polymer strips, corrugated steel sheets and flexible magnetic cores, and make adjustments and improvements until the airtightness meets the specified standards.

[0020] In step 6), when the hand crank of the hand crank is operated, the transmission rod is driven to rotate by the hand crank. When the transmission rod rotates, on the one hand, the hanging window is driven through the transmission arm and the connecting rod to realize the process from closing to opening; on the other hand, the transmission rod drives the linkage gear to rotate, and the linkage gear drives the transmission member to move and rotate to one side, and then the upper part of the hanging window is synchronously pushed outward through the adjustable screw.

[0021] The present invention provides a quick-install double-track hanging window meshing linkage structure and a high-airtightness processing and installation method, which has the following technical effects: 1) Two sets of transmission arms and linkage rods are used to drive the suspended window. Two sets of linkage mechanisms consisting of transmission parts, adjustable screws and linkage gears are set to achieve bilateral synchronous drive. The advantages of bilateral synchronous drive are: a. Mechanical Synchronizer: Utilizing a combination of gear meshing and a connecting rod mechanism, the device achieves a wide 75° opening angle for the suspended window. This angle meets fire emergency rescue window opening requirements. In an emergency, sufficient opening space ensures rapid evacuation of personnel and smooth entry of rescue equipment. By adjusting related components, the device can achieve even wider opening angles, further meeting the requirements for suspended window opening space in different scenarios. This is particularly true in specialized fire emergency rescue environments, providing ample space for evacuation and equipment entry.

[0022] Reliable self-locking function: The transmission parts and the adjustable screw, as well as the transmission parts and the linkage gears in the device have self-locking characteristics. When the hanging window is opened to the required angle, it can remain stably in this position and will not be accidentally closed due to external forces (such as wind, vibration, etc.), ensuring the smooth flow of emergency passages. Structural stability: The dual-track synchronous drive and high-strength connecting components ensure the structural stability of the suspended window when it is opened at a large angle. It can withstand various external forces that may occur during emergency rescue without deformation or damage, ensuring the safe implementation of rescue work. b. The transmission mechanism is set on the left and right sides, and the gears are meshed and linked to ensure that the left and right transmission arms maintain consistency in speed and phase during movement, eliminating the torque eccentricity problem of traditional unilateral drive.

[0023] c. Stability and Safety: The integrated self-locking module comprises a transmission element, an adjustable screw, and a linkage gear. The coordination between the transmission element and the adjustable screw is the core component that enables the self-locking function. Together, they form a self-locking transmission pair. When the mechanism stops moving (e.g., when a suspended window is opened to a certain angle and the hand crank is released), if an external force (such as strong wind or accidental contact) attempts to push the sash to change position, the external force is transmitted to the transmission element through the transmission arm, linkage, and other components, causing it to rotate in the opposite direction. However, due to the self-locking nature of the transmission element and the adjustable screw, they cannot rotate relative to each other, and the entire transmission system is "locked." The suspended window remains stable in its current position, avoiding safety risks such as collisions and falls caused by accidental movement, and ensuring the stability of the mechanism when stationary. When the mechanism stops moving, it prevents accidental movement due to external forces, ensuring its stability and safety.

[0024] The design of this device can not only withstand greater tension and pressure, but also ensure the tight connection between the components, preventing loosening or falling off during movement, and further improving the stability and safety of the mechanism.

[0025] 2) Utilize gear combinations to achieve efficient distribution of rotational motion, improving transmission efficiency while ensuring sufficient torque output.

[0026] 3) Low-friction contact design is adopted between transmission parts and moving parts. Through special material pairing and surface treatment process, the operating resistance is significantly reduced and the service life of the system is extended.

[0027] 4) The hand-crank drive assembly drive system provides mechanical input through a hand crank, which is connected to the drive shaft and transmits rotational motion to the transmission rod. The handle adopts an ergonomic design, with an anti-slip texture on the grip area and a foldable structure integrated into the operating end, taking into account both ease of use and spatial adaptability. The hand crank has a built-in torque limiting mechanism, which automatically slips when the operating force exceeds the safety threshold to avoid component damage due to overload operation.

[0028] 5) The connecting plate and connecting legs are designed using an integrated extrusion process for aluminum alloy windows, eliminating the need for drilling holes on site to damage the window structure. This allows the sealing system to maintain continuous and complete pressure contact, fundamentally resolving the airtightness issues associated with traditional punched connections. This improves the structural integrity and airtightness of the aluminum alloy window, resulting in a cleaner and more aesthetically pleasing appearance that harmonizes with the overall architectural style and enhances the overall aesthetic of the building.

[0029] 6) Dynamic compensation sealing structure: The rubber strips around the window sash adopt a modular segmented design. Each segment of the rubber strip is independently packaged to facilitate local replacement and maintenance (each segment ≤ 300mm). Corrugated steel sheets are embedded inside the rubber strips. When the window sash is opened, the magnetic rubber strips automatically detach from the window frame through elastic contraction, avoiding friction loss and protecting the rubber strips and window frame surface.

[0030] 7) Optimize transmission efficiency and reduce torque: Adopt multi-stage gear meshing and dual-track synchronous transmission structure, and disperse the hand-crank input torque through gear ratio optimization, reducing energy loss during transmission and significantly reducing the torque required for operation, so that one person can easily drive it with one hand, avoiding the risk of loss of control due to excessive force.

[0031] 8) This invention utilizes a quick-release structure, significantly reducing installation time. On-site assembly of a single-hung window can be controlled within 30-60 minutes. For example, quick-release latches quickly secure components without complex fastening operations, eliminating the tedious bolt tightening steps required in traditional installations. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 It is a structural schematic diagram of the present invention (closed state).

[0033] Figure 2 It is a structural schematic diagram of the present invention (open state).

[0034] Figure 3 It is a schematic diagram of the linkage mechanism in the present invention.

[0035] Figure 4 It is a structural schematic diagram of the transmission part in the present invention.

[0036] Figure 5 It is an exploded view of the hand crank in the present invention.

[0037] Figure 6 It is a schematic diagram of the partial structure of the hanging window and the window frame in the present invention.

[0038] Figure 7 Schematic diagram of the structure of the polymer strip in the present invention.

[0039] Figure 8 This is a schematic diagram of the closed state of the hanging window in the present invention.

[0040] Figure 9 This is a schematic diagram of the open state of the hanging window in the present invention.

[0041] Figure 10 This is a schematic diagram of the state change of the hanging window from closed to open in the present invention.

[0042] In the figure: transmission part 1, adjustable screw 2, linkage gear 3, transmission rod 4, transmission arm 5, hand crank 6, connecting plate 7, quick-pull pin 8, hand crank 9, linkage rod 10, window frame 11, magnetic patch 12, polymer adhesive strip 13, corrugated steel sheet 14, flexible magnetic core 15, connecting foot 16, bracket 17, limit head 18, hanging window 19. DETAILED DESCRIPTION like Figure 1-4 As shown, the quick-install dual-track hanging window meshing linkage structure includes brackets 17 mounted on either side of a hanging window 19. Brackets 17 are provided with slots. One end of an adjustable screw 2 freely passes through the slots and connects to a stopper 18, which abuts the end face of the hanging window 19. The other end of the adjustable screw 2 is threadedly connected to a transmission member 1. Transmission member 1 is an annular structure consisting of left and right semicircular rings and a straight section between them. Racks are located within the upper and lower straight sections and mesh with a linkage gear 3. Linkage gear 3 is a missing gear. As a missing gear, the angle of its toothed portion strictly matches the transmission stroke required for window opening.

[0043] The centers of the left and right linkage gears 3 are fixedly connected to a transmission rod 4, which extends outward from the linkage gears 3 and is mounted on a hand crank 6. A stop plate is provided on the back of the hand crank 6. The stop plate fits into a groove in the coupling plate 7 and is laterally inserted and held in place by a quick-release pin 8. The coupling plate 7 and window frame 11 are formed using an integral extrusion process, resulting in uniform metal properties and structural strength, while also enhancing structural stability and airtightness.

[0044] The hand crank 6 is a general-purpose model produced by conventional manufacturers in the market. A hand crank 9 is installed on the hand crank 6, and the hand crank 9 can drive the transmission rod 4 to rotate.

[0045] A transmission arm 5 is symmetrically mounted on the transmission rod 4, which can drive the transmission arm 5 to rotate when the transmission rod 4 rotates. The other side of the transmission arm 5 is hinged to a connecting rod 10, and the other end of the connecting rod 10 is hinged to a connecting foot 16.

[0046] The connecting foot 16 and the hanging window 19 are integrally extruded and punch-free, and have uniform metal properties and structural strength, thereby improving the stability and airtightness of the structure.

[0047] During the integral extrusion process, the connecting plate 7 and the connecting foot 16 can be formed into specific shapes and sizes according to design requirements to accurately adapt to the connection requirements of components such as the connecting rod 10 and the hand crank 6.

[0048] like Figure 6 As shown, preferably, corresponding contact positions of the window frame 11 and the hanging window 19 are sealed by polymer adhesive strips 13, and the polymer adhesive strips 13 are used to enhance the air tightness of the doors and windows.

[0049] like Figure 7 As shown, a corrugated steel sheet 14 and a flexible magnetic core 15 are provided in the polymer strip 13 .

[0050] like Figure 6 As shown, the window frame 11 and the hanging window 19 contact each other at two points. A magnetic patch 12 is fixed to the upper end of one hanging window 19, with a polymer adhesive strip 13 attached to the upper lower end of the corresponding window frame 11. A polymer adhesive strip 13 is attached to the lower upper end of the other hanging window 19, with a magnetic patch 12 fixed to the middle of the corresponding window frame 11. The corrugated steel sheet 14 and flexible magnetic core 15 within the polymer adhesive strip 13 work in conjunction with the prefabricated magnetic patch 12 to provide a certain elastic adsorption force. Through its elastic deformation and magnetic attraction, the polymer adhesive strip 13 can adapt to slight angular deviations of the sealing surface, ensuring a tight fit between the polymer adhesive strip 13 and the window frame 11 in different closed positions, enhancing the airtightness of the window.

[0051] The window frame, sash 19, and magnetic patch 12 are manufactured using a factory prefabrication process. This ensures dimensional accuracy and assembly quality between components, as well as secure attachment and precise positioning of the magnetic patch. Install polymer strip 13 on the window frame 11 at the contact point with the hanging window 19, ensuring that the polymer strip 13 is installed in an accurate and tight fit. Insert corrugated steel sheet 14 and flexible magnetic core 15 into the polymer strip 13 to ensure a good fit, provide appropriate elastic adsorption force, and enhance the airtightness of the window.

[0052] Installation process: 1) Install bracket 17 at a suitable location on the top of the hanging window 19. A prefabricated mounting structure compatible with the window frame or hanging window frame can be used. Because this application emphasizes an integrated extrusion molding process and a punch-free design, bracket 17 can be installed using pre-set mounting slots or connectors on the top of the hanging window 19. These slots or connectors are integrally formed with the frame of the hanging window 19, eliminating the need for on-site drilling. During installation, align bracket 17 with the pre-set mounting position and secure it using snap-fits or bolts inserted through pre-set holes to ensure a secure connection and precise positioning between bracket 17 and the top of the hanging window 19. Install transmission member 1 and adjustable screw 2 on bracket 17. Adjust the center distance and meshing clearance between transmission member 1 and adjustable screw 2 to ensure smooth transmission and no binding. For example, the center distance error between transmission member 1 and adjustable screw 2 should be controlled within ±0.1mm, and the meshing clearance should be between 0.1-0.2mm.

[0053] 2) Securely connect one end of the transmission arm 5 to the transmission rod 4 using a pin or other means. Hinge the other end of the transmission arm 5 to the connecting rod 10. Select the appropriate mounting hole on the connecting rod 10 to mount it to the hanging window 19 (hung window) to accommodate hanging windows of varying sizes and structures. After installation, check the movement of the transmission arm 5 and connecting rod 10 to ensure there is no interference.

[0054] 3) Insert the back of the hand crank 6 into the groove of the connecting plate 7 and insert the quick-pull pin 8 to achieve quick installation.

[0055] 4) Crank the hand crank 9 of the hand crank 6 to open the hanging window 19 to the desired maximum angle. Coarse adjustment can be achieved by adjusting the mounting position of the transmission arm 5 on the linkage rod 10; fine adjustment is achieved with the adjustable screw 2. To increase the opening angle on one side of the hanging window 19, rotate the adjustable screw 2 toward the side of the hanging window 19, extending it and pushing the relevant transmission components to further open the hanging window 19 on that side. To decrease the angle, rotate the adjustable screw 2 in the opposite direction to shorten it.

[0056] 6) Crank the hand crank 9 of the hand crank 6 to check whether the hanging window opens and closes smoothly and whether the movement of each component is synchronized. If any jamming or asynchrony is found, adjust the position and connection of the transmission components until the hanging window can open and close smoothly and synchronously.

[0057] 7) Use specialized testing methods such as the pressure differential method to test the airtightness of suspended windows. During testing, simulate different wind pressure conditions and measure the window's air permeability. If airtightness does not meet requirements, check the installation of components such as the polymer strip 13, corrugated steel sheet 14, and flexible magnetic core 15, and make adjustments and improvements until airtightness meets the specified standard.

[0058] Working principle: 1) When the hand crank 9 of the hand crank 6 is operated, the hand crank 6 drives the transmission rod 4 to rotate. When the transmission rod 4 rotates, on the one hand, the transmission arm 5 and the connecting rod 10 drive the hanging window 19 to realize the process from closing to opening; on the other hand, the transmission rod 4 drives the linkage gear 3 to rotate, and the linkage gear 3 drives the transmission member 1 to move and rotate to one side, and then the upper part of the hanging window 19 is synchronously pushed outward through the adjustable screw 2.

[0059] 2) When fine-tuning the opening angle of the hanging window 19 is required, the adjustable screw 2 is rotated outward and extended toward the side of the hanging window 19, resulting in a wider opening. As a key adjustment component in the transmission system, the extension of the adjustable screw 2 changes the mechanical relationships of the connected transmission structure. As the adjustable screw 2 extends, it displaces components such as the associated transmission arm or linkage, which in turn causes the hanging window 19 to rotate further outward about its axis, increasing the angle between the hanging window 19 and the window frame and achieving a wider opening. This adjustment method is similar to the operating principle of a screw-type window opener, where extending the screw pushes the window sash open. In practice, this adjustment method enables precise fine-tuning of the opening angle of the hanging window 19, meeting user requirements for varying ventilation and lighting.

Claims

1. Quick-install double-track hanging window gear linkage structure, characterized by: It includes a hand crank (6) installed on the left and right sides of the window frame (11), a transmission rod (4) is installed between the two hand cranks (6), and transmission arms (5) are installed on the left and right sides of the transmission rod (4), and the other end of each transmission arm (5) is hinged to the connecting rod (10), and the other end of the connecting rod (10) is hinged to the connecting foot (16), and the connecting foot (16) is fixed to the hanging window (19); A linkage mechanism is installed on the transmission rod (4) at each transmission arm (5), and the other end of the linkage mechanism is connected to the hanging window (19) for further transmitting power.

2. The quick-install double-track hanging window gear linkage structure according to claim 1, characterized in that: The linkage mechanism includes a bracket (17), which is mounted on the hanging window (19); a slide groove is provided on the bracket (17), one end of the adjustable screw (2) freely passes through the slide groove and is connected to the limit head (18), and the limit head (18) is pressed against the end surface of the hanging window (19); the other end of the adjustable screw (2) is threadedly connected to the transmission member (1); the transmission member (1) is meshed with the linkage gear (3) and is driven to move forward and backward by the linkage gear (3); the linkage gear (3) is mounted on the transmission rod (4).

3. The quick-install double-track hanging window gearing linkage structure according to claim 2, characterized in that: The transmission member (1) comprises left and right semicircular rings and a straight section between the left and right semicircular rings. Racks are provided on the inner sides of the upper and lower straight sections, and the racks are meshed with the linkage gear (3).

4. The quick-install double-track hanging window meshing linkage structure according to claim 1, characterized in that: A connecting plate (7) is provided on the window frame (11) at a position corresponding to the hand crank (6), and a groove is provided on the inner side of the connecting plate (7). The back of the hand crank (6) is inserted into the groove and is laterally inserted into the limit position by a quick-pull pin (8).

5. The quick-install double-track hanging window gearing linkage structure according to claim 4, characterized in that: The connecting plate (7) and the window frame (11) are formed by integral extrusion; the corresponding connecting foot (16) and the hanging window (19) are also formed by integral extrusion.

6. The quick-install double-track hanging window gearing linkage structure according to claim 5, characterized in that: The window frame (11) and the hanging window (19) are sealed by a polymer adhesive strip (13).

7. The quick-install double-track hanging window gearing linkage structure according to claim 6, characterized in that: A corrugated steel sheet (14) and a flexible magnetic core (15) are provided in the polymer rubber strip (13).

8. The quick-install double-track hanging window gearing linkage structure according to claim 7, characterized in that: When the polymer adhesive strip (13) is mounted on the window frame (11), a portion of the hanging window (19) that contacts the window frame (11) is provided with a magnetic patch (12); when the polymer adhesive strip (13) is mounted on the hanging window (19), a portion of the window frame (11) that contacts the hanging window (19) is provided with a magnetic patch (12).

9. The method for high-airtightness processing and installation of the quick-install double-track hanging window meshing linkage structure according to claim 8 comprises the following steps: Step 1) Install the bracket (17) at a suitable position on the upper end of the hanging window (19), install the transmission member (1) and the adjustable screw (2) on the bracket (17), adjust the center distance and meshing clearance of the transmission member (1) and the adjustable screw (2) to ensure smooth transmission without jamming; Step 2) Connect the transmission rod (4) to the linkage gear (3), and make the linkage gear (3) mesh with the transmission member (1); adjust the position and angle of the transmission rod (4) so ​​that it can smoothly transmit power; Step 3) Connect one end of the transmission arm (5) to the transmission rod (4) through a pin, etc., and hinge the other end of the transmission arm (5) to the connecting rod (10). Select a suitable mounting hole on the connecting rod (10) and install it with the hanging window (19). After the installation is completed, check the movement flexibility of the transmission arm (5) and the connecting rod (10) to ensure that there is no interference. Step 4), insert the back of the hand crank (6) into the groove of the connecting plate (7) and insert the quick-pull pin (8) to achieve quick installation; Step 5), adjusting the position and angle of the hanging window (19) so that it can be opened and closed smoothly under the drive of the transmission arm (5); Step 6), shake the hand crank (9) of the hand crank (6) to check whether the opening and closing process of the hanging window is smooth and whether the movement between the various components is synchronized; If any jamming or asynchronism is found, adjust the position and connection relationship of the transmission components until the hanging window can open and close smoothly and synchronously; Step 7) Use professional testing methods such as the pressure difference method to test the airtightness of the hanging window; during the testing process, simulate different wind pressure conditions and measure the air permeability of the window; if the airtightness does not meet the requirements, check the installation of components such as the polymer strip (13), the corrugated steel sheet (14) and the flexible magnetic core (15), and make adjustments and improvements until the airtightness meets the specified standards.

10. The method for high airtightness processing and installation of the quick-install double-track hanging window meshing linkage structure according to claim 9, characterized in that: In step 6), when the hand crank (9) of the hand crank (6) is operated, the hand crank (6) drives the transmission rod (4) to rotate. When the transmission rod (4) rotates, on the one hand, the hanging window (19) is driven through the transmission arm (5) and the connecting rod (10), thereby realizing the process from closing to opening; on the other hand, the transmission rod (4) drives the linkage gear (3) to rotate, and the linkage gear (3) drives the transmission member (1) to move to one side and rotate, and then the upper part of the hanging window (19) is synchronously pushed outward through the adjustable screw (2).

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