A folding garage door

Abstract

The application relates to the technical field of hangar doors, and particularly discloses a folding hangar door which comprises a door body, a beam body and a door curtain, the door body is provided with an auxiliary assembly and a control assembly; the auxiliary assembly comprises a guide rod and a guide rail, the guide rod is slidably assembled on the guide rail through the control assembly, the control assembly comprises a rotating piece which drives the guide rod to rotate and drives the guide rod to move close to the door curtain; initially, the guide rod is located above the beam body and abuts against the side surface of the door curtain; when the two beam bodies move close to each other to fold the door curtain, the rotating piece drives the guide rod to rotate and move out from above the beam body and pushes the door curtain; subsequently, the guide rod forms a downward pressing force on the door curtain by means of the gravity of the guide rod, so that the door curtain is in a tension state during folding, and the folding track of the door curtain always surrounds the guide rod; the folding hangar door has the effects of reducing the overall operation failure of the equipment and prolonging the service life of the door curtain.

Description

Technical Field

[0001] This invention relates to the technical field of hangar doors, and more specifically to a folding hangar door. Background Technology

[0002] Folding hangar doors are specialized doors designed for large spaces such as airport hangars, ship repair hangars, and heavy industrial workshops. Flexible stacking doors are a type of folding hangar door. The curtain of a flexible stacking door is composed of multiple sections of flexible PVC fabric. When opened, the bottom beam drives the wind-resistant beam to fold along the track, and the curtain stacks up section by section above the doorway.

[0003] Patent document CN103114796B discloses a cable-stayed flexible stacking door, comprising a bottom beam, several sets of wind-resistant beams, a top beam, a track, steel wire ropes, fixed pulleys, movable pulleys, a hoist, and a door curtain. The top beam, bottom beam, and wind-resistant beams all include steel cables and wheel frames. Both ends of the steel cable are fixed to wheel frames on either side, and guide wheels are fixedly installed within the wheel frames. The wheel frames cooperate with the track via guide wheels, and each set of wheel frames on one side of the steel cable is connected by a steel wire rope. One end of the steel wire rope is connected to a hoist fixed to the ground, and the other end of the steel wire rope is sequentially fixed to an anchor point at the top of the roof via a fixed pulley fixed to the roof's top and a movable pulley fixed to the bottom beam. The door curtain is installed on the top beam, wind-resistant beam, and bottom beam.

[0004] When the door curtain needs to be retracted, the hoist lifts the bottom beam via steel wire rope. During this process, the bottom beam provides support, sequentially lifting the wind-resistant beams until the stacking door is in place. The hoist then rotates, retracting the door curtain and closing the stacking door. Conversely, to open the door curtain, the hoist is activated, causing it to rotate in the opposite direction. This releases the steel wire rope. Due to gravity, the bottom beam and wind-resistant beam tend to move downwards, and the door curtain slowly descends as the steel wire rope is released until it is fully open.

[0005] However, this solution also has the following problems. During the curtain retraction process, when the bottom beam moves upward and sequentially pulls the adjacent wind-resistant beams closer together, the curtain between the two wind-resistant beams will passively fold and retract. However, since the curtain itself is made of flexible material and the folding action relies entirely on structural linkage rather than active control, the folding process is generally uncontrollable. This can easily cause the curtain to sag or get stuck during folding, resulting in uneven folding. This phenomenon may cause the curtain to deviate from the preset folding trajectory, or it may cause an irregular shape with excessive accumulation on one side due to inconsistent folding speeds on both sides. Abnormal curtain folding may cause parts of the curtain to get stuck in the track, preventing the door from completing its full stroke smoothly. In severe cases, it may even trigger the motor overload protection mechanism, causing the door to stop running. In addition, irregular folding will cause localized stress concentration on the curtain. For example, areas that are excessively compressed during folding are prone to wrinkling or fiber breakage, while areas that rub excessively against the track will wear down faster, ultimately significantly shortening the overall lifespan of the curtain. Summary of the Invention

[0006] This invention provides a folding hangar door, aiming to solve the problem in related technologies where the door curtain folds uncontrollably due to its flexible material when the folding hangar door is retracted, leading to door malfunctions and a shortened curtain life.

[0007] The folding hangar door of the present invention includes multiple beams slidably mounted on the door body, and a curtain connected to each beam. The door body is provided with mutually cooperating auxiliary components and control components. The auxiliary components include guide rods and guide rails. The guide rods are slidably mounted on the guide rails via the control components. The control components include a rotating component that drives the guide rods to rotate and move them closer to the curtain. Initially, the curtain between two adjacent beams is unfolded and tensioned. The guide rods are located above the beams and abut against the side of the curtain. When the two beams approach each other and fold the curtain, the rotating component drives the guide rods to rotate and move them out from above the beams and push the curtain. Subsequently, the guide rods exert a downward pressing force on the curtain with their own weight, so that the curtain is in a tensioned state when folded, and the folding trajectory of the curtain always revolves around the guide rods.

[0008] The effect lies in the fact that, by setting up mutually cooperating auxiliary and control components, the two work together to fold the curtain when the warehouse door is opened. Specifically, initially, when the warehouse door is closed, the curtain between two adjacent beams is taut under the action of the beams. The guide rod abuts against the side of the curtain closest to the beam and is located above the beam. Under the action of the rotating component, the guide rod abuts against the side of the curtain. When the warehouse door is opened, the two adjacent beams move closer to each other. As the distance between the two beams becomes less than the length of the curtain between them, the rotating component drives the guide rod to push the curtain. After the guide rod moves out from above the beam, it presses down on the curtain with its own weight, causing the curtain to fold around the guide rod. During this process, the guide rod moves relative to the curtain until the curtain is completely folded. By setting the guide rod to guide the curtain during folding, wrinkles or uneven folding of the curtain are reduced, overall equipment malfunctions are reduced, and the service life of the curtain is extended.

[0009] Preferably, the control assembly further includes: a control block that slides up and down on the guide rail, a control rod that connects the control block and the guide rod, the control rod and the control block being rotatably coupled, and a rotating component being disposed between the control rod and the control block and connecting the two, so as to drive the end of the control rod near the guide rod to rotate toward the door curtain.

[0010] Its effect is that, by setting the control block to slide in conjunction with the guide rail, when the guide rod moves out from above the beam, the guide rod uses its own weight to drive the control block to slide downward in the guide rail. Through the cooperation of the guide block and the control block, the movement direction of the guide rod can be restricted, and the curtain can be folded in an auxiliary manner to avoid irregular folding of the curtain.

[0011] Preferably, the control rod includes a connecting part and a telescopic part. The connecting part is rotatably connected to the control block. The telescopic part is arranged perpendicular to the connecting part. The telescopic part includes a sleeve rod connected to the connecting part and an inner rod slidably assembled in the sleeve rod. The inner rod is connected to a guide rod. An elastic element connecting the two is provided between the inner rod and the sleeve rod.

[0012] Its effect is that the telescopic part includes a slidingly fitted inner rod and a sleeve rod, and an elastic element is set between the inner rod and the sleeve rod. The two are connected by the elastic element, so that the telescopic part has an elastic telescopic function. When the guide rod pushes the curtain, it avoids hard contact between the guide rod and the curtain, protects the curtain and reduces the possibility of damage to the curtain.

[0013] Preferably, the guide rail and the beam are spaced apart at their ends, the control rod is located between the guide rail and the beam, and the end of the guide rod extends to the outside of the curtain and connects with the control rod.

[0014] The effect is that by setting the end of the guide rod to extend to the outside of the curtain, the length of the guide rod is greater than the width of the curtain, so that when the guide rod pushes the curtain, the pushing range of the guide rod can completely cover the curtain, so that the fold of the curtain is evenly stressed, and the stability of the curtain when folding is further improved.

[0015] Preferably, the control block is located below the guide rod, and the guide rod is set perpendicular to the control rod.

[0016] The effect is that the control rod is set at the end of the beam, which avoids contact between the control rod and the beam when the control rod drives the guide rod to rotate, thereby reducing the interference of the control rod with the rotation of the guide rod, so that the guide rod can rotate and push the curtain.

[0017] Preferably, a baffle is provided on the side of the guide rail in the vertical direction. The baffle is located on one side of the curtain and is spaced apart from the curtain. When the rotating component drives the guide rod to push the curtain, the side of the guide rod abuts against the baffle. The baffle is used to limit the rotation angle of the guide rod.

[0018] The effect is that by setting a baffle on one side of the guide rail, when the guide rod rotates to separate from the beam, the rotation angle of the guide rod can be limited by the baffle. This ensures that when the door is opened, the guide rod corresponding to the curtain between every two adjacent beams abuts against the baffle. In other words, multiple fold lines on the curtain are set along the length of the baffle, making the overall folding more uniform and further improving the folding effect of the curtain.

[0019] Preferably, the guide rod is provided with an abutment wheel on its outside. The abutment wheel is rotatably disposed outside the guide rod and corresponds to the baffle. The guide rod abuts against the baffle through the abutment wheel.

[0020] Its effect is that when the guide wheel rotates to the point of separation from the beam, the guide rod abuts against the baffle through the abutment wheel, thereby reducing the friction between the guide rod and the baffle, while ensuring the restriction of the guide rod.

[0021] Preferably, the guide rod includes a fixed part connected to the control rod and a rotating part rotatably sleeved outside the fixed part. The rotating part is coaxially arranged with the fixed part and abuts against the side of the door curtain.

[0022] The effect is that during the folding process of the curtain, the curtain moves relative to the guide rod, and the rotating part rotates relative to the guide rod, thereby reducing the friction between the guide rod and the curtain, thus protecting the curtain and reducing the occurrence of damage.

[0023] Preferably, the guide rod is arranged along the length of the beam, and two sets of control components and guide rails are provided, with the two sets of control components and guide rails corresponding to the two ends of the guide rod respectively.

[0024] Its effect is to improve the stability of the guide rod when it moves by setting up two sets of control components and guide rails.

[0025] Preferably, a sliding beam rail is provided on the door body along the vertical direction. Two sets of sliding beam rails are provided at both ends of the beam body. The sliding beam rail is parallel to the guide rail and is located on the side of the guide rail away from the baffle. Multiple pulleys are provided on the beam body. The pulleys abut against the sliding beam rail and the beam body slides up and down along the sliding beam rail through the pulleys.

[0026] Its effect is that by cooperating with multiple pulleys and sliding beam rails, the number of engagement points between the beam and the sliding beam rails is increased, and the beam is supported by multiple support points, thereby improving the stability of the beam when it moves.

[0027] Beneficial effects:

[0028] This invention sets guide rods on each beam. During folding, the guide rods cooperate with the curtain and apply downward pressure to the curtain with their own weight, so that the curtain can be folded along the guide rods. This allows the curtain to be folded in an orderly manner along a predetermined trajectory, while reducing wrinkles and other phenomena that occur during the folding process, reducing overall equipment malfunctions and extending the service life of the curtain. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 This is a schematic diagram showing the connection relationship between the beam and the door curtain of this invention.

[0031] Figure 3 This is a schematic diagram showing the positional relationship of multiple beams in this invention.

[0032] Figure 4 This is a schematic diagram of the fit between the beam and the sliding beam rail in this invention.

[0033] Figure 5 This is a schematic diagram of the guide rail structure in this invention.

[0034] Figure 6 This is a schematic diagram showing the positional relationship between the guide rod and the door curtain in this invention.

[0035] Figure 7 This is a schematic diagram of the control components and guide rods in this invention.

[0036] Figure 8 This is a schematic diagram of the state of the curtain between the two beams in this invention when it is folded.

[0037] Figure 9 This is a schematic diagram of the state during the folding process of the door curtain in this invention.

[0038] Figure label:

[0039] 1. Door body; 2. Beam body; 21. Bottom beam; 22. Wind-resistant beam; 3. Door curtain; 4. Auxiliary components; 41. Guide rod; 411. Fixing part; 412. Rotating part; 42. Guide rail; 5. Control components; 51. Rotating component; 52. Control block; 53. Control rod; 531. Connecting part; 532. Telescopic part; 533. Sleeve rod; 534. Inner rod; 6. Elastic component; 7. Baffle; 8. Abutment wheel; 9. Sliding beam rail; 91. Pulley. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] like Figures 1 to 9 As shown, the folding hangar door of the present invention is a liftable folding shelter designed primarily for large-span, high-space scenarios such as hangars. Its core structure includes a door body 1, beams 2, and a curtain 3. Multiple beams 2 are provided, each sliding vertically onto the door body 1. The curtain 3 is connected to the side of the beams 2. The beams 2 include a bottom beam 21 and wind-resistant beams 22. Multiple wind-resistant beams 22 are provided, spaced apart above the bottom beams 21, with identical structural designs for each. The bottom beams 21 are located below the wind-resistant beams 22. A lifting mechanism connected to the bottom beams 21 is provided on the door body 1 to drive the bottom beams 21 up and down. The lifting mechanism is installed at the top frame of the door body 1, and its power output end is connected to the top of the bottom beams 21 via a wire rope or chain. The lifting mechanism can employ a motor-driven reduction structure commonly used in this field, coupled with an encoder and limit switches to achieve precise control. The motor is a servo motor with braking function, capable of smoothly stopping at any position during the lifting and lowering of the gate 1, preventing the beam 2 from slipping due to accidental power outages. The specific driving principle, motor model selection, and reduction gear parameters of the lifting mechanism are all matters that can be conventionally designed by those skilled in the art according to actual needs, and will not be elaborated upon here.

[0042] In actual operation, the folding hangar door operates in two states: closed and open. Specifically, when the door 1 is initially closed, the bottom beam 21, under its own weight and the tension of the curtain 3, is located at the bottom of the door 1. At this time, the curtain 3 between the bottom beam 21 and the first wind-resistant beam 22 below, as well as between any two adjacent wind-resistant beams 22, are all vertical and extended, and the curtain 3 itself has a certain tension. The distance between each beam 2 is uniform, and the curtain 3 completely covers the door 1, forming a complete shielding structure. When the hangar door needs to be opened, the lifting mechanism pulls the bottom beam 21 upward. During the upward movement of the bottom beam 21, when the wind-resistant beam 22 rises and connects with the adjacent beam above... As the wind-resistant beams 22 gradually approach each other, the curtain 3 between them begins to fold and gather in a pleated manner until the bottom beam 21 abuts against the first wind-resistant beam 22 below. Then, under the continuous traction of the bottom beam 21, the first wind-resistant beam 22 below moves closer to the second wind-resistant beam 22 below. The above actions are repeated until all the wind-resistant beams 22 are stacked and brought together in sequence to fold the curtain 3 in all areas. At this time, the hangar entrance is fully open. When it is necessary to close the curtain 3, simply control the lifting mechanism to run in reverse. The bottom beam 21 moves downward under the action of gravity, which drives each wind-resistant beam 22 to unfold in sequence. The curtain 3 then gradually unfolds until the bottom beam 21 falls back to the bottom limit of the door body 1, returning to the initial closed state.

[0043] Reference Figure 2 , Figure 4 , Figure 5 To achieve efficient and orderly folding of the curtain 3 during the opening of the warehouse door, auxiliary components 4 and control components 5 are installed on the door body 1. These components dynamically guide and correct the posture of the curtain 3 during the folding process, reducing problems such as localized wrinkles and uneven stacking that easily occur during the folding stage.

[0044] Reference Figure 4 , Figure 5 , Figure 6 , Figure 7 The auxiliary component 4 includes a guide rod 41 and a guide rail 42, wherein the guide rail 42 is fixedly installed vertically to provide a stable path constraint for the movement of the guide rod 41. The guide rod 41 extends along the length of the beam 2, and the guide rod 41 forms a sliding assembly structure with the guide rail 42 through the control component 5, allowing the guide rod 41 to move vertically along the guide rail 42 under the guidance of the control component 5. At the same time, the control component 5 is also linked with the guide rod 41, and can synchronously drive the guide rod 41 to rotate, thereby pushing the guide rod 41 closer to the direction of the curtain 3. Multiple guide rods 41 are provided, and multiple guide rods 41 are correspondingly set with multiple beams 2.

[0045] Reference Figure 6 , Figure 8 , Figure 9 Initially, the curtain 3 between two adjacent beams 2 is fully extended and taut. At this time, the guide rod 41 is located above the beam 2, and its side is in close contact with the side of the curtain 3, i.e., the guide rod 41 is in contact with the side of the curtain 3 closest to the beam 2. When the two adjacent beams 2 move closer to each other, the tension of the curtain 3 is released, and the control component 5 drives the guide rod 41 to rotate and maintain contact with the curtain 3, while moving it away from the position above the beam 2. During this process, the end of the guide rod 41 continuously contacts the surface of the curtain 3 and generates a pushing force, guiding the curtain 3 to begin folding as the two beams 2 move closer. At the same time, the guide rod 41, with the help of its own gravity, will exert a continuous downward pressing force on the curtain 3. This force can effectively counteract the loosening phenomenon that may occur in the curtain 3 due to uneven force during the folding process, ensuring that the curtain 3 always remains taut and avoiding wrinkles or misalignment. The above actions are repeated, and the curtain 3 is folded in turn through multiple guide rods 41. In addition, throughout the folding process, the movement trajectory of the curtain 3 is always centered on the guide rod 41. Through the constraint of the guide rod 41, the folding path of the curtain 3 remains stable and regular, ultimately achieving the orderly folding and storage of the curtain 3.

[0046] Reference Figure 4 , Figure 5 , Figure 7 , Figure 8 The control component 5 includes a rotating element 51, a control block 52, and a control rod 53. The control block 52 is slidably mounted within the guide rail 42, meaning it slides up and down along the guide rail 42. One end of the control rod 53 is connected to the guide rod 41, and the other end is connected to the control block 52. The rotating element 51 is located at the connection between the control rod 53 and the control block 52, and it can directly drive the end of the control rod 53 near the guide rod 41 to rotate in a directional direction toward the curtain 3. In this embodiment, the rotating element 51 is a torsion spring, with both ends connected to the control rod 53 and the control block 52, respectively.

[0047] When the curtain 3 switches from the tense state to the folded state, as the distance between the two beams 2 decreases, the rotating component 51 drives the guide rod 41 to move out from above the beams 2 via the control rod 53. Subsequently, the guide rod 41, with its own weight, transmits the force in the opposite direction to the control block 52 via the control rod 53, causing the control block 52 to slide downward along the guide rail 42. At the same time, the guide rod 41 moves downward synchronously with the control block 52, forming a stable pressure on the curtain 3, assisting the curtain 3 to fold in an orderly manner, ensuring smooth and efficient operation, and guaranteeing the structural stability and operational reliability of the curtain 3 under different working conditions.

[0048] Reference Figure 6 , Figure 7 , Figure 8The control lever 53 consists of two parts: a connecting part 531 and a telescopic part 532. The connecting part 531 and the control block 52 are connected by a rotatable connection. The telescopic part 532 consists of a sleeve rod 533 and an inner rod 534. One end of the sleeve rod 533 is fixedly connected to the connecting part 531. The inner rod 534 is slidably assembled inside the sleeve rod 533, that is, the inner rod 534 can freely extend and retract along the axial direction of the sleeve rod 533. At the same time, the end of the inner rod 534 away from the sleeve rod 533 is directly connected to the guide rod 41. An elastic element 6 is provided between the inner rod 534 and the sleeve rod 533. The elastic element 6 is preferably a spring. The spring is arranged along the sliding direction of the inner rod 534. One end of the spring is connected to the end of the inner rod 534, and the other end is connected to the inside of the sleeve rod 533.

[0049] When the control lever 53 drives the guide rod 41 to rotate around the connecting part 531 to push the curtain 3, the spring can absorb the impact force of the guide rod 41 and the curtain 3 at the moment of contact in real time through its own compression and reset characteristics, avoiding rigid contact between the two, thereby greatly reducing the risk of damage and deformation of the curtain 3 due to excessive instantaneous force, effectively protecting the curtain 3 and extending its service life.

[0050] Reference Figure 4 , Figure 5 , Figure 7 , Figure 8 The guide rail 42 corresponds to and is spaced apart from the end of the beam 2. The control rod 53 is located between the end of the guide rail 42 and the end of the beam 2. The end of the guide rod 41 extends to the outside of the curtain 3 and connects with the control rod 53, meaning the length of the guide rod 41 is greater than the width of the curtain 3. When the guide rod 41 rotates and pushes the curtain 3 to achieve the folding action, direct contact between the control rod 53 and the surface of the curtain 3 is avoided. Furthermore, throughout the folding process, only the guide rod 41 maintains necessary contact with the curtain 3, effectively eliminating any frictional interference or positional displacement that the control rod 53 might cause to the curtain 3, thus ensuring that the curtain 3 maintains a stable movement trajectory throughout the folding process.

[0051] Reference Figure 5 , Figure 7 The control block 52 is located below the guide rod 41, which is perpendicular to the control rod 53. Specifically, the axis of rotation of the connecting part 531 is parallel to the guide rod 41, and the telescopic part 532 is perpendicular to the guide rod 41. When the guide rod 41 moves out from above the beam 2, the end of the control rod 53 near the guide rod 41 tilts towards the curtain 3. This allows the curtain 3 to unfold, and as it tensions, it drives the guide rod 41 upwards again, eventually moving it above the beam 2. This further assists in folding the curtain 3.

[0052] In this embodiment, the rotational force applied by the rotating component 51 to the guide rod 41 has a one-way triggering characteristic. Only when the distance between the two beams 2 decreases, that is, when the curtain 3 begins to fold, will the guide rod 41 be moved out from above the beams 2, so as to avoid the guide rod 41 lifting the curtain 3 when it is unfolded and tensioned, thereby ensuring the flatness of the curtain 3 when it is unfolded.

[0053] Reference Figure 4 , Figure 5 A baffle 7 is provided on the side of the guide rail 42. The baffle 7 is arranged vertically, that is, the baffle 7 is parallel to the guide rail 42. The baffle 7 is located on one side of the curtain 3 and is spaced apart from the curtain 3. When the rotating component 51 drives the guide rod 41 to push the curtain 3, the side of the guide rod 41 can abut against the baffle 7.

[0054] When the curtain 3 is closed, the rotating component 51 drives the guide rod 41 to move along a preset path and push the curtain 3. During this process, the side of the guide rod 41 abuts against the baffle 7. The physical obstruction of the baffle 7 constrains the rotation angle of the guide rod 41. Especially when the guide rod 41 moves out from the upper area of ​​the beam 2 and enters the curtain 3 pushing stage, the baffle 7 can effectively limit the rotation range of the guide rod 41, preventing it from deviating from the preset movement trajectory due to excessive rotation angle. This avoids misalignment and collision between the guide rod 41 and other components of the curtain 3, or causes wrinkles or disordered stacking of the curtain 3 during folding. At the same time, it can ensure that the rotation angle of multiple guide rods 41 is the same when assisting in folding the curtain 3, so that after the curtain 3 is folded, multiple guide rods 41 abut against the baffle 7, making the curtain 3 fold more evenly and ensuring the overall folding effect.

[0055] Reference Figure 4 , Figure 5 To ensure smooth movement of the guide rod 41 during its interaction with the baffle 7, an abutment wheel 8 is mounted on the outside of the guide rod 41. The abutment wheel 8 is rotatably mounted on the outside of the guide rod 41 using bearings, and its installation position corresponds to the arrangement of the baffle 7, ensuring that the abutment wheel 8 can abut against the baffle 7 during the movement of the guide rod 41. When the rotating component 51 drives the guide rod 41 to push the curtain 3, the guide rod 41 does not directly and rigidly contact the baffle 7, but rather forms a rolling engagement with the baffle 7 through the external abutment wheel 8. This allows the abutment wheel 8 to rotate freely around the guide rod 41 as it subsequently moves downwards, converting the sliding friction between the guide rod 41 and the baffle 7 into rolling friction, significantly reducing the resistance encountered by the guide rod 41 when moving downwards. This reduces wear on the guide rod 41 and the baffle 7 during long-term use, extends the service life of the components, and makes the movement of the guide rod 41 pushing the curtain 3 smoother and easier, thus better assisting the curtain 3 in completing the folding process and ensuring the stability and efficiency of the overall structure.

[0056] Reference Figure 7 To achieve low-friction engagement during the downward pressure of the guide rod 41 on the curtain 3, the guide rod 41 includes a fixed part 411 and a rotating part 412. The fixed part 411 is directly connected to the control rod 53, and the rotating part 412 is sleeved on the outside of the fixed part 411 via a bearing. The rotating part 412 and the fixed part 411 are coaxially arranged, allowing the rotating part 412 to rotate stably around the fixed part 411. When the guide rod 41 acts downward on the curtain 3 under its own weight, the outer surface of the rotating part 412 will form a tight contact with the side of the curtain 3. As the curtain 3 is displaced relative to the guide rod 41 under the pressure of the guide rod 41, the contact friction between the curtain 3 and the rotating part 412 will drive the rotating part 412 to rotate synchronously around the fixed part 411. The original sliding friction between the guide rod 41 and the curtain 3 is transformed into rolling friction of the rotating part 412, which significantly reduces the frictional resistance between the two. This not only makes the movement of the curtain 3 smoother, but also effectively avoids damage such as wear and tear on the surface of the curtain 3 due to excessive friction, thereby extending the service life of the curtain 3.

[0057] Reference Figure 2 To ensure that the guide rod 41 maintains a stable and precise movement trajectory throughout the overall movement, the guide rod 41 is set along the length of the beam 2. Two sets of control components 5 and guide rails 42 are symmetrically arranged to cooperate with the guide rod 41. The two sets of control components 5 and the two sets of guide rails 42 are respectively installed at both ends of the guide rod 41, which can simultaneously apply a limiting effect from both ends of the guide rod 41. This avoids problems such as tilting, deviation or shaking of the guide rod 41 due to unilateral force or insufficient unilateral constraint during the movement, improves the stability of the guide rod 41 during the overall movement, and provides a reliable guarantee for the smooth and precise execution of the folding action of the curtain 3.

[0058] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5A sliding beam rail 9 is vertically mounted on the door body 1. Two sets of sliding beam rails 9 are correspondingly arranged at both ends of the beam body 2. The sliding beam rail 9 is parallel to the guide rail 42. The sliding beam rail 9 is located on the side of the guide rail 42 away from the baffle 7, i.e., the guide rail 42 is located between the baffle 7 and the sliding beam rail 9. Multiple pulleys 91 are also mounted on the beam body 2. These pulleys 91 are evenly distributed at the ends of the beam body 2 via brackets or rotating shaft assemblies and are in close contact with the rail surface of the sliding beam rail 9, ensuring that the beam body 2 can slide stably up and down along the sliding beam rail 9 using the pulleys 91. Furthermore, the multiple pulleys 91 form a multi-point contact engagement around the rail surface of the sliding beam rail 9. This multi-contact design not only constrains the movement trajectory of the beam body 2 from multiple directions, effectively preventing the beam body 2 from tilting, deviating, or wobbling during sliding, significantly improving its movement stability, but also converts the sliding friction between the beam body 2 and the sliding beam rail 9 into the rolling friction of the pulleys 91, greatly reducing the frictional resistance experienced by the beam body 2 during movement.

[0059] The implementation principle of the present invention is as follows: Initially, the curtain 3 is in an open and tense state, the warehouse door is in a closed state, and the guide rod 41 is located above the beam 2 and abuts against the side of the curtain 3 near the beam 2.

[0060] When the warehouse door needs to be opened, the bottom beam 2 moves upward first, and then, through the linkage between beams 2, it sequentially drives the multiple beams 2 above to stack in an orderly manner. Specifically, the bottom beam 2 moves upward and gradually approaches the second bottom beam 2 directly above it. During this process, the curtain 3 connecting the two beams 2 naturally folds due to the reduced distance between them. When the bottom beam 2 and the second bottom beam 2 are fully in contact, the curtain 3 between them is folded. Then, the two beams 2 that have reached contact move upward together, further driving the second bottom beam 2 closer to the third bottom beam 2. This folding action is repeated on the curtain 3 between these two beams, proceeding in a cyclical manner until all curtains 3 are folded in an orderly manner, thus gradually opening the warehouse door.

[0061] When the two beams 2 approach each other, the length of the curtain 3 between the two beams 2 is greater than the distance between the two beams 2. The rotating component 51 drives the guide rod 41 to move to the outside of the beam 2 and pushes the curtain 3. At the same time, the guide rod 41 presses down on the curtain 3 with its own weight, providing an auxiliary force for the folding of the curtain 3. This design can effectively reduce abnormal situations such as folding misalignment and local wrinkles that occur during the folding process of the curtain 3, ensuring that the curtain 3 is always folded evenly and retracted in an orderly manner when the warehouse door is opened. It fundamentally avoids problems such as warehouse door operation jamming and component wear caused by abnormal folding of the curtain 3, significantly reduces the failure rate of equipment operation, and reduces fatigue damage caused by repeated abnormal folding of the curtain 3, effectively extending the overall service life of the curtain 3.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A folding hangar door, comprising a plurality of beams slidably mounted on the door body, and a door curtain connected to each beam, characterized in that, The door is equipped with mutually cooperating auxiliary components and control components. The auxiliary components include a guide rod and a guide rail. The guide rod is slidably mounted on the guide rail via the control components. The control components include a rotating component that drives the guide rod to rotate and move it towards the door curtain, a control block that is slidably mounted on the guide rail, and a control rod that connects the control block and the guide rod. The control rod and the control block are rotatably engaged. The rotating component is located between the control rod and the control block and connects the two, so as to drive the end of the control rod near the guide rod to rotate towards the door curtain. The control rod includes a connecting part and a telescopic part. The connecting part is rotatably connected to the control block. The telescopic part is set perpendicular to the connecting part. The telescopic part includes a sleeve rod connected to the connecting part and an inner rod slidably mounted in the sleeve rod. The inner rod is connected to the guide rod. An elastic component is provided between the inner rod and the sleeve rod to connect the two. Initially, the curtain between two adjacent beams unfolds and tightens. The guide rod is located above the beam and abuts against the side of the curtain. When the two beams approach each other and the curtain is folded, the rotating component drives the guide rod to rotate and move out from above the beam, pushing the curtain. Then, the guide rod uses its own weight to exert a downward pressing force on the curtain, so that the curtain is in a taut state when folded, and the folding trajectory of the curtain always revolves around the guide rod.

2. The folding hangar door according to claim 1, characterized in that, The guide rail and the beam are spaced apart at their ends, and the control rod is located between the guide rail and the beam. The end of the guide rod extends to the outside of the curtain and connects with the control rod.

3. The folding hangar door according to claim 2, characterized in that, The control block is located below the guide rod, which is set perpendicular to the control rod.

4. The folding hangar door according to claim 3, characterized in that, A baffle is provided on the side of the guide rail in the vertical direction. The baffle is located on one side of the curtain and is spaced apart from the curtain. When the rotating component drives the guide rod to push the curtain, the side of the guide rod abuts against the baffle. The baffle is used to limit the rotation angle of the guide rod.

5. The folding hangar door according to claim 4, characterized in that, The guide rod is equipped with an abutment wheel on its outside. The abutment wheel is rotatably mounted on the outside of the guide rod and corresponds to the baffle. The guide rod abuts against the baffle through the abutment wheel.

6. The folding hangar door according to claim 4, characterized in that, The guide rod includes a fixed part connected to the control rod and a rotating part rotatably sleeved outside the fixed part. The rotating part is coaxially arranged with the fixed part and abuts against the side of the door curtain.

7. The folding hangar door according to claim 1, characterized in that, The guide rod is set along the length of the beam. There are two sets of control components and guide rails, and the two sets of control components and guide rails correspond to the two ends of the guide rod, respectively.

8. The folding hangar door according to claim 4, characterized in that, The door body is equipped with a sliding beam rail along the vertical direction. There are two sets of sliding beam rails corresponding to both ends of the beam body. The sliding beam rail is parallel to the guide rail and is located on the side of the guide rail away from the baffle. Multiple pulleys are installed on the beam body. The pulleys abut against the sliding beam rail and the beam body slides up and down along the sliding beam rail through the pulleys.

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