A new multi-angle transmission device for fireproof rolling shutter door

Abstract

This application relates to the field of fire safety equipment technology and discloses a novel multi-angle transmission device for fire-fighting roller shutters. It includes an L-shaped outer shell containing a transmission assembly and a power assembly. The transmission assembly includes first, second, and third gearboxes and multiple curtain winding shafts. By changing the arrangement of each winding shaft, the lowered curtain can form a rectangular or elliptical shape, breaking the limitation of traditional roller shutters that can only be arranged in a single-axis straight line. This perfectly adapts to the needs of modern buildings with irregularly shaped fire compartments. The power assembly uses a single motor as its power source, synchronously driving multiple upper and lower sprockets with a chain, and is equipped with a rotating shaft and small sprockets for tensioning and guiding, effectively preventing the long chain from shaking and derailing during frequent starts and stops. This invention achieves stable multi-angle guidance and winding / unwinding of the curtain in complex spaces, ensuring absolute synchronization and delay-free opening and closing of multi-axis linkages, ensuring safety and reliability.

Description

Technical Field

[0001] This invention relates to the field of fire safety equipment technology, specifically to a novel multi-angle transmission device for fire-fighting rolling shutter doors. Background Technology

[0002] Fire-resistant roller shutters are indispensable fire prevention and heat insulation facilities in modern buildings, and are widely used in large commercial complexes, high-rise buildings, underground parking garages, and other places. In the event of a fire, fire-resistant roller shutters can quickly descend, forming an effective fire compartment, preventing the spread of fire and smoke, and ensuring the evacuation of people and the safety of property.

[0003] However, traditional fire-fighting roller shutters typically employ a linear drive structure with a single winding shaft, allowing only vertical raising and lowering of the curtain in a flat, two-dimensional plane. With the diversification of modern architectural design, numerous complex non-linear structures have emerged within buildings, such as L-shaped corner corridors, circular atriums, and irregularly shaped openings in escalators. In these unique locations, traditional single-axis linear roller shutters face significant limitations: to achieve multi-angle or circular fireproof shielding, multiple independent linear roller shutter systems often need to be installed in sections. This not only significantly increases the costs of purchasing, installing, and controlling multiple motors, but also makes the physical joints between multiple independent door units highly susceptible to becoming fatal weak points for smoke and fire leakage; furthermore, the linkage of multiple independent systems carries the risk of asynchronous delays, meaning that if one device malfunctions, the entire fire compartment becomes ineffective.

[0004] On the other hand, if a single power source is used for multi-axis transmission to achieve corner or irregular fireproof isolation, the existing roller shutter door transmission device is prone to the following defects due to the lack of a reasonable multi-angle conversion and synchronous distribution mechanism: First, when loading and unloading heavy multi-layer fireproof curtains in complex non-linear spaces, uneven power transmission can easily cause the curtains to be pulled, jammed, or even torn between the rollers; Second, when performing mechanical transmission across vertical spaces, the long-distance transmission chain is prone to violent shaking at the moment of frequent motor start and stop, and may even experience chain derailment or tooth skipping, which seriously affects the safety and reliability of fire-fighting equipment operation.

[0005] Therefore, a new type of multi-angle transmission device for fire-fighting rolling shutters is needed to solve the technical problems of existing rolling shutters being unable to adapt to non-linear irregular spaces, easy jamming of multi-axis transmissions, and easy vibration and derailment of long-distance chain transmissions. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a novel multi-angle transmission device for fire-fighting rolling shutters. This device solves the problems that existing fire-fighting rolling shutters can typically only be arranged in a single-axis straight line, which cannot meet the fire isolation requirements of complex non-linear corners and irregular openings in modern buildings. Furthermore, during multi-axis linkage transmission, asynchronous power distribution can easily lead to curtain jamming, chain shaking, and derailment.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: a novel multi-angle transmission device for fire-fighting rolling shutter doors, comprising a housing, wherein a transmission component is disposed inside the housing;

[0008] The transmission assembly includes a drive shaft disposed inside the housing. One end of the drive shaft is connected to a first gearbox, one end of which is connected to a corner fabric winding shaft. The other end of the corner fabric winding shaft is connected to a second gearbox, one end of which is connected to a guide shaft. The inner wall of the housing is also provided with a first fabric winding shaft, one end of which is connected to a third gearbox, and the other end of which is connected to a second fabric winding shaft.

[0009] Preferably, a motor is installed inside the housing, and the output end of the motor is connected to a third sprocket; one end of the second curtain winding shaft is connected to a second sprocket, one end of the drive shaft is connected to a first sprocket, and a chain is provided between the third sprocket, the second sprocket, and the first sprocket.

[0010] Preferably, a rotating shaft is fixedly connected to the inner wall of the outer shell, and a small sprocket is rotatably connected to the outer wall of the rotating shaft.

[0011] Preferably, the outer casing is L-shaped and divided into an upper part and a lower part according to space, and the second gearbox is disposed inside the upper part of the outer casing.

[0012] Preferably, the first gearbox is disposed inside the upper side of the housing, and the corner curtain winding shaft is disposed between the first gearbox and the second gearbox.

[0013] Preferably, the first fabric winding shaft, the third gearbox, and the second fabric winding shaft are all located inside the lower side of the housing.

[0014] Preferably, the first sprocket is disposed on the upper side inside the housing, and the toothed end of the first sprocket meshes with the chain.

[0015] Preferably, the second sprocket is disposed on the lower side inside the housing, and the tooth end of the second sprocket meshes with the chain.

[0016] Preferably, the third sprocket is disposed on the lower side inside the housing, and the tooth end of the third sprocket meshes with the chain.

[0017] Preferably, the small sprocket is located in the middle of the housing, and the teeth of the small sprocket mesh with the chain. The chain is located inside the housing and links the first sprocket, the small sprocket, the second sprocket, and the third sprocket together.

[0018] This invention provides a novel multi-angle transmission device for fire-fighting rolling shutter doors. It has the following beneficial effects:

[0019] 1. This invention, by setting up an outer shell and internal transmission components, utilizes the multi-angle power transmission characteristics of the first and second gearboxes, in conjunction with the drive shaft, corner curtain winding shaft, and guide shaft, to break the limitation of traditional fire-fighting roller shutter doors that can only be arranged in a single straight line. This structure can achieve smooth change of direction and transmission of rotational power inside the L-shaped outer shell, effectively solving the problem of curtain jamming under multi-angle traction in traditional equipment, and greatly improving the operational stability and reliability of special fire-fighting roller shutter doors in complex corner spaces.

[0020] 2. This invention allows the device to be flexibly adjusted according to the actual installation environment by changing the positions of the first curtain winding shaft, the second curtain winding shaft, and the corner curtain winding shaft. Combined with the cooperation of the first gearbox, the second gearbox, and the third gearbox, when these winding shafts are arranged in a multi-segment zigzag pattern, the lowered curtain can become rectangular; when they are arranged in a certain angled arc, the curtain can become elliptical. This characteristic of mechanical position reconstruction perfectly meets the fireproof sealing requirements of irregular openings in modern buildings, achieving fire isolation without blind spots.

[0021] 3. This invention achieves zero-delay linkage of the multi-axis mechanism by setting a motor inside the outer shell as a single power source to drive the third sprocket, and using a chain to precisely and synchronously distribute power to the upper first sprocket and the lower second sprocket. At the same time, this invention provides excellent guidance and support for the chain bridging the upper and lower spaces by fixing a rotating shaft to the inner wall of the outer shell and using a small sprocket rotatably connected to its outer wall to mesh with the chain, preventing the chain from shaking or derailing during frequent starts and stops, and ensuring the safety and efficiency of the overall operation of the device in the event of a fire. Attached Figure Description

[0022] Figure 1 This is a perspective view of a novel multi-angle transmission device for fire-fighting rolling shutters according to the present invention;

[0023] Figure 2 This is a schematic diagram of the drive shaft portion of a novel multi-angle transmission device for fire-fighting rolling shutters according to the present invention;

[0024] Figure 3 This is a schematic diagram of the second curtain winding shaft part of a novel multi-angle transmission device for fire-fighting rolling shutter doors according to the present invention.

[0025] Figure 4 This is a schematic diagram of the first gearbox of a novel multi-angle transmission device for fire-fighting rolling shutter doors according to the present invention;

[0026] Figure 5 This is a schematic diagram of the guide shaft portion of a novel multi-angle transmission device for fire-fighting rolling shutter doors according to the present invention;

[0027] Figure 6 This is a schematic diagram of the third sprocket part of a novel multi-angle transmission device for fire-fighting rolling shutters according to the present invention.

[0028] The components are as follows: 1. Outer casing; 2. First gearbox; 3. Second gearbox; 4. Drive shaft; 5. Guide shaft; 6. First curtain winding shaft; 7. Second curtain winding shaft; 8. Motor; 9. Corner curtain winding shaft; 10. Third gearbox; 11. Chain; 12. First sprocket; 13. Small sprocket; 14. Second sprocket; 15. Third sprocket; 16. Shaft. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example:

[0031] Please see the appendix Figure 1 -Appendix Figure 6This invention provides a novel multi-angle transmission device for fire-fighting rolling shutter doors, comprising: a main body of the device consisting of an outer shell 1, which is L-shaped and divided into an upper part and a lower part. A transmission assembly is installed inside the outer shell 1. The upper part of the transmission assembly includes a drive shaft 4 located inside the upper part of the outer shell 1. One end of the drive shaft 4 is connected to a first gearbox 2, which is located inside the upper part of the outer shell 1. One end of the first gearbox 2 is connected to a corner curtain winding shaft 9, which performs angle conversion and transmits rotational force. The other end of the corner curtain winding shaft 9 is connected to a second gearbox 3, which is located inside the upper part of the outer shell 1. The corner curtain winding shaft 9 is located between the first gearbox 2 and the second gearbox 3. One end of the second gearbox 3 is connected to a guide shaft 5, which, in conjunction with the corner curtain winding shaft 9, is used to smoothly guide and wind up the fireproof curtain in the L-shaped corner area.

[0032] The inner wall of the outer casing 1 is also equipped with a first curtain winding shaft 6. One end of the first curtain winding shaft 6 is connected to a third gearbox 10 for transmission, and the other end of the third gearbox 10 is connected to a second curtain winding shaft 7. The first curtain winding shaft 6, the third gearbox 10, and the second curtain winding shaft 7 are all located inside the lower part of the outer casing 1. Furthermore, to adapt to the complex fire compartment design requirements of modern buildings, this device can change the positions of the first curtain winding shaft 6, the second curtain winding shaft 7, and the corner curtain winding shaft 9, so that the curtain, after being lowered, becomes a rectangular or elliptical shape. Specifically, by utilizing the multi-angle power transmission characteristics of the first gearbox 2, the second gearbox 3, and the third gearbox 10, when the first curtain winding shaft 6, the second curtain winding shaft 7, and the corner curtain winding shaft 9 are arranged in a multi-segment zigzag or right-angle manner, the curtain can be guided to unfold into a rectangular shape. When the first curtain winding shaft 6, the second curtain winding shaft 7, and the corner curtain winding shaft 9 are arranged in an arc array at a certain angle, the curtain can be lowered into an elliptical shape. This structure utilizes the reconstruction of mechanical position to achieve fireproof sealing of irregular openings without dead angles.

[0033] To achieve synchronous linkage between the upper and lower components, a motor 8 is installed inside the outer casing 1. The output end of the motor 8 is connected to a third sprocket 15, which is located on the lower side inside the outer casing 1. One end of the second curtain winding shaft 7 is connected to a second sprocket 14, which is also located on the lower side inside the outer casing 1. One end of the drive shaft 4 is connected to a first sprocket 12, which is located on the upper side inside the outer casing 1. A rotating shaft 16 is fixedly connected to the inner wall of the outer casing 1. A small sprocket 13 is rotatably connected to the outer wall of the rotating shaft 16, and is located on the middle side inside the outer casing 1. The third sprocket... A chain 11 is provided between the first sprocket 12 and the second sprocket 14. The teeth of the first sprocket 12, the second sprocket 14, the third sprocket 15, and the small sprocket 13 are all engaged with the chain 11. When the motor 8 starts, the first sprocket 12, the small sprocket 13, the second sprocket 14, and the third sprocket 15 are linked together by the chain 11 set inside the housing 1. The rotational power is distributed simultaneously to the lower second curtain winding shaft 7 and the upper drive shaft 4. The small sprocket 13 guides the chain 11, thereby realizing the overall delay-free opening and closing of the new type of fire-fighting roller shutter door.

[0034] Working Principle: When this new type of fire-fighting roller shutter door multi-angle transmission device is needed, the motor 8 installed inside the L-shaped housing 1 starts when the fire system sends a signal or when performing routine opening and closing operations. The output end of the motor 8 drives the third sprocket 15 to rotate. The third sprocket 15 transmits power synchronously to the second sprocket 14 located on the lower side of the housing 1 and the first sprocket 12 located on the upper side of the housing 1 through the chain 11. During the transmission process of the chain 11, the rotating shaft 16 installed in the middle of the housing 1 and its externally rotatably connected small sprocket 13 mesh with the chain 11, providing good guidance and tension for the chain 11 spanning the upper and lower spaces, preventing the chain 11 from derailing or vibrating during long-distance transmission. After receiving power, the first sprocket 12 located on the upper side of the housing 1 begins to rotate, driving the drive shaft 4 to rotate, thus driving the chain 11 to rotate. The rotational power of the drive shaft 4 is input to the first gearbox 2. After transmission and reversal within the gearbox, the corner curtain winding shaft 9 rotates, thus enabling the winding and unwinding of the fireproof curtain at the corner. Subsequently, the power continues to be transmitted from the corner curtain winding shaft 9 to the second gearbox 3. After transmission by the second gearbox 3, the guide shaft 5 rotates synchronously, ensuring that the curtain can be smoothly guided and moved within the multi-angle, non-linear L-shaped space. At the same time, the second sprocket 14 located on the lower side of the outer casing 1 rotates synchronously under the drive of the chain 11, directly driving the second curtain winding shaft 7 to rotate. The power of the second curtain winding shaft 7 is input to the third gearbox 10. After transmission, it drives the first curtain winding shaft 6 to rotate together. The linkage of the two lower winding shafts together completes the smooth winding or lowering of the lower part of the main fireproof curtain.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel multi-angle transmission device for fire-fighting rolling shutter doors, comprising a housing (1), characterized in that, The housing (1) is equipped with a transmission assembly inside; The transmission assembly includes a drive shaft (4), which is located inside the housing (1). One end of the drive shaft (4) is connected to a first gearbox (2), and one end of the first gearbox (2) is connected to a corner curtain winding shaft (9). The other end of the corner curtain winding shaft (9) is connected to a second gearbox (3). One end of the second gearbox (3) is connected to a guide shaft (5). The inner wall of the housing (1) is also provided with a first curtain winding shaft (6), one end of which is connected to a third gearbox (10). The other end of the third gearbox (10) is connected to a second curtain winding shaft (7).

2. The novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 1, characterized in that: The housing (1) is equipped with a motor (8), and the output end of the motor (8) is connected to a third sprocket (15); one end of the second curtain winding shaft (7) is connected to a second sprocket (14), one end of the drive shaft (4) is connected to a first sprocket (12), and a chain (11) is provided between the third sprocket (15), the second sprocket (14) and the first sprocket (12).

3. The novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 2, characterized in that: The inner wall of the outer shell (1) is fixedly connected to a rotating shaft (16), and the outer wall of the rotating shaft (16) is rotatably connected to a small sprocket (13).

4. The novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 1, characterized in that: The outer shell (1) is L-shaped and is divided into an upper part and a lower part according to space. The second gearbox (3) is located inside the upper part of the outer shell (1).

5. A novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 4, characterized in that: The first gearbox (2) is located inside the upper side of the outer casing (1), and the corner curtain winding shaft (9) is located between the first gearbox (2) and the second gearbox (3).

6. A novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 4, characterized in that: The first curtain winding shaft (6), the third gearbox (10), and the second curtain winding shaft (7) are all located inside the lower part of the outer casing (1).

7. A novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 2, characterized in that: The first sprocket (12) is located on the upper side inside the housing (1), and the tooth end of the first sprocket (12) meshes with the chain (11).

8. A novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 2, characterized in that: The second sprocket (14) is located on the lower side inside the housing (1), and the tooth end of the second sprocket (14) meshes with the chain (11).

9. A novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 2, characterized in that: The third sprocket (15) is located on the lower side inside the housing (1), and the tooth end of the third sprocket (15) meshes with the chain (11).

10. A novel multi-angle transmission device for fire-fighting rolling shutter doors according to claim 3, characterized in that: The small sprocket (13) is located in the middle of the shell (1). The tooth end of the small sprocket (13) meshes with the chain (11). The chain (11) is located inside the shell (1) and links the first sprocket (12), the small sprocket (13), the second sprocket (14) and the third sprocket (15).

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