Multi-motor steering fireproof roller shutter

Abstract

The invention relates to the related technical field of fireproof roller shutters, in particular to a multi-motor steering fireproof roller shutter which comprises a main support plate, a roller shutter output shaft is fixedly connected to the surface of one side of the main support plate, and a motor output shaft is fixedly connected to the surface of one side of the main support plate. And a fireproof roller shutter motor is fixedly connected to the surface of one side of the motor output shaft. The multi-motor steering fireproof roller shutter can perfectly adapt to a complex building space, the multiple sets of fireproof roller shutter motors can be accurately controlled, and the fireproof roller shutter can be flexibly adjusted to run in a single roller shutter with the too large length and special-shaped or special space, such as a large shopping mall atrium, a super-long linear roller shutter can stably run and special-shaped spaces such as an arc corridor and the like, and can also be accurately turned and attached; the upper, lower, left and right lap joint modes are suitable for special places with different heights and widths respectively, the application range of the fireproof roller shutter is greatly expanded, and the problem that a traditional roller shutter is difficult to deal with complex space is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field related to fireproof rolling shutters, and is mainly used for large and irregular spaces in shopping mall atriums or museum-type projects, and in particular relates to a multi-motor steering fireproof rolling shutter. Background Art

[0002] A fire shutter is a facility used for fire partitioning. It is a curtain that can be lowered automatically, usually made of fire-resistant materials. It is used to block fire and smoke when a fire occurs, thereby protecting other parts of the building from damage. It is usually installed at openings in buildings, such as doors, windows, corridors, etc. The main functions of fire shutters include fire separation, smoke separation, and safe evacuation. Under the development trend of diversification of modern buildings, curved building structures are becoming increasingly common. However, traditional fire shutters are mostly designed to be straight. Therefore, there is a special need for a multi-motor steering fire shutter.

[0003] However, existing fireproof roller shutters are usually driven by a single motor, which has defects when dealing with extra-long spans or irregular-shaped spaces. For example, the transmission torque attenuation causes the curtain to be out of sync. At the same time, during the raising and lowering process of the roller shutter, due to the large area of the roller shutter and uneven force, the roller shutter is prone to jamming, twisting and other problems, affecting the normal use and fire prevention effect of the fireproof roller shutter. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-motor multi-axis steering fireproof roller shutter to solve the problem that some fireproof roller shutters proposed in the above background technology are usually driven by a single motor and have defects when dealing with ultra-long spans or irregular spaces. For example, the transmission torque is attenuated, resulting in the curtain being out of sync. At the same time, during the raising and lowering process of the roller shutter, due to the large area of the roller shutter and uneven force, the roller shutter is prone to jamming, twisting and other problems, affecting the normal use and fire prevention effect of the fireproof roller shutter.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-motor multi-axis steering fireproof roller shutter, comprising a main bracket plate, one side surface of the main bracket plate is fixedly connected to a roller shutter output shaft, one side surface of the main bracket plate is fixedly connected to a motor output shaft, one side surface of the motor output shaft is fixedly connected to a fireproof roller shutter motor, the outer side surface of the fireproof roller shutter motor is electrically connected to a fireproof roller shutter control box, one side surface of the main bracket plate is fixedly connected to a keel, one side surface of the keel is fixedly connected to a secondary bracket plate, the outer side surface of the keel is fixedly connected to a guide rail, and the inner side surface of the guide rail is provided with a windproof hook The outer surface of the keel is fixedly connected to a lifting and fixing frame, the inner surface of the lifting and fixing frame is rotatably connected to a lifting shaft, one side surface of the auxiliary bracket plate is fixedly connected to a bearing seat, the outer surface of the rolling shutter output shaft is provided with a variable diameter starting shaft, one side surface of the variable diameter starting shaft is fixedly connected to a middle main shaft, one side surface of the middle main shaft is fixedly connected to a variable diameter tail shaft, one side surface of the middle main shaft is fixedly connected to an arc-shaped transmission shaft, one side surface of the middle main shaft is fixedly connected to a conical rotating shaft, the outer surface of the middle main shaft is fixedly connected to a fireproof rolling shutter curtain, and the outer surface of the middle main shaft is provided with a conical barrel;

[0006] The fireproof rolling shutter motors are provided in multiple groups, which can be precisely controlled by the fireproof rolling shutter control box according to the operation requirements of the rolling shutter and the characteristics of the space.

[0007] Preferably, the keels are provided in multiple groups, and the keels connect the main support plate and the auxiliary support plate.

[0008] Preferably, the roller blind output shaft and the variable diameter starting shaft correspond to each other, and the bearing seat and the variable diameter tail shaft correspond to each other.

[0009] Preferably, the arc-shaped transmission shafts and the tapered rotation shafts are provided in multiple groups, and the multiple groups of the central spindles can adjust the angles through the arc-shaped transmission shafts and the tapered rotation shafts.

[0010] Preferably, the lifting shafts are provided in multiple groups, and the central spindles are provided in multiple groups.

[0011] Preferably, the conical barrel includes a support shaft, a stepped shaft and a mechanical connection hole, the inner surface of the conical barrel is fixedly connected to the support shaft, the outer surface of the conical barrel is fixedly connected to the stepped shaft, and a mechanical connection hole is opened on one side surface of the conical barrel.

[0012] Preferably, the overlapping modes of the multi-motor steering fireproof roller shutter include upper and lower overlapping and left and right overlapping.

[0013] Preferably, in the upper and lower overlapping manner, the overlapping distance between the two rolling shutter boxes is 500 mm, and the overlapping size of the curtain fabric is 300 mm.

[0014] Preferably, in the left-right overlapping mode, the box overlapping width is 500 mm, and the curtain overlapping width is 300 mm.

[0015] Preferably, the lifting fixing frame and the lifting shaft form a lifting device, the lifting shaft is rotatably connected to the auxiliary bracket plate through a bearing seat, and the bearing seat cooperates with the variable diameter tail shaft to form a steering support structure. Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This multi-motor steering fireproof roller shutter is perfectly adapted to complex architectural spaces. Multiple groups of fireproof roller shutter motors can be precisely controlled. When a single roller shutter is too long, or has an irregular shape or special space, it can be flexibly adjusted to operate. For example, in the atrium of a large shopping mall, it can achieve smooth operation of extra-long straight roller shutters. It can also accurately turn and fit in irregular spaces such as curved corridors. The two overlapping methods of up and down and left and right are respectively suitable for special places with different heights and widths. This greatly expands the application range of fireproof roller shutters and effectively solves the problem that traditional roller shutters are difficult to cope with complex spaces.

[0017] 2. The fireproof performance is greatly enhanced. Under the up-down and left-right overlap modes, the shutter box and curtain have reasonable overlap dimensions, such as 500mm for the box and 300mm for the curtain when overlapping up and down, and the same applies to left-right overlap. This can effectively reduce air leakage. When a fire occurs, it can more efficiently prevent the spread of fire and smoke, buy more time for personnel evacuation and fire rescue, ensure the safety of life and property of people in the building, and provide a solid guarantee for fire safety.

[0018] 3. The present invention forms a unique steering support system through a lifting device composed of a lifting bracket and a lifting shaft, in conjunction with a rotating connection structure between a bearing seat and a variable diameter tail shaft. This system realizes stable steering of multiple groups of main shafts in arc-shaped or irregular spaces through precise positioning of bearings and linkage support of the lifting device, and solves the problems of jamming and distortion caused by gravity sagging when traditional roller shutters turn. Any fireproof roller shutter technical solution that realizes steering capability based on the lifting device and bearing matching structure disclosed in the present invention falls within the core innovation category of the present invention, and its technical concept and structural design are covered by the protection scope of this patent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view of the appearance structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the top view of the appearance structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the appearance structure of the bracket of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a single component of the present invention;

[0023] Figure 5 This is a schematic diagram of the keel structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the variable diameter tail shaft and the middle main shaft cooperating with each other in the present invention;

[0025] Figure 7 Schematic diagram of the single-side structure of the bracket plate of the present invention

[0026] Figure 8 This is a schematic diagram of the overall structure of the bracket plate of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the roller blind output shaft of the present invention;

[0028] Figure 10 This is a schematic diagram of the output shaft structure of the motor of the present invention;

[0029] Figure 11 This is a schematic diagram of the auxiliary support plate structure of the present invention;

[0030] Figure 12 This is a schematic diagram of the bearing seat structure of the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of the variable diameter starting shaft of the present invention;

[0032] Figure 14 This is a schematic diagram of the main shaft structure of the present invention;

[0033] Figure 15 This is a schematic diagram of the variable diameter tail shaft structure of the present invention;

[0034] Figure 16 This is a schematic diagram of the structure of the lifting and fixing frame of the present invention;

[0035] Figure 17 This is a schematic diagram of the lifting shaft structure of the present invention;

[0036] Figure 18 This is a schematic diagram of the structure of the arc-shaped transmission shaft of the present invention;

[0037] Figure 19 This is a schematic diagram of the structure in which the arc-shaped transmission shaft and the tapered rotating shaft cooperate with each other in the present invention;

[0038] Figure 20 This is a schematic diagram of the guide rail plane structure of the present invention;

[0039] Figure 21 This is a schematic diagram of the appearance structure of the guide rail of the present invention;

[0040] Figure 22 Schematic diagram of the cross-sectional structure of the guide rail of the present invention;

[0041] Figure 23 This is a schematic diagram of the structure of the tapered rotating shaft of the present invention;

[0042] Figure 24 This is a schematic diagram of the windproof hook structure of the present invention;

[0043] Figure 25 This is a structural diagram of the fireproof roller shutter control box of the present invention;

[0044] Figure 26 This is a schematic diagram of the conical barrel structure of the present invention;

[0045] Figure 27 This is a schematic diagram of the upper and lower overlapping structure of the present invention;

[0046] Figure 28 This is a schematic diagram of the left and right overlap structure of the present invention;

[0047] Figure 29 Schematic diagram of the overall structure of the present invention

[0048] In the figure: 1. Main bracket plate; 2. Rolling shutter output shaft; 3. Motor output shaft; 4. Fireproof rolling shutter motor; 5. Keel; 6. Auxiliary bracket plate; 7. Bearing seat; 8. Lifting bracket; 9. Variable diameter starting shaft; 10. Middle main shaft; 11. Variable diameter tail shaft; 12. Lifting shaft; 13. Arc-shaped transmission shaft; 14. Guide rail; 15. Conical rotating shaft; 16. Windproof hook; 17. Fireproof rolling shutter control box; 18. Fireproof rolling shutter curtain; 19. Conical barrel; 191. Support shaft; 192. Step shaft; 193. Mechanical connection hole. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] See also Figure 1-Figure 28The present invention provides a technical solution: a multi-motor steering fireproof roller shutter, comprising a main bracket plate 1, one side surface of the main bracket plate 1 is fixedly connected to a roller shutter output shaft 2, one side surface of the main bracket plate 1 is fixedly connected to a motor output shaft 3, one side surface of the motor output shaft 3 is fixedly connected to a fireproof roller shutter motor 4, the outer side surface of the fireproof roller shutter motor 4 is electrically connected to a fireproof roller shutter control box 17, one side surface of the main bracket plate 1 is fixedly connected to a keel 5, one side surface of the keel 5 is fixedly connected to a sub-bracket plate 6, the outer side surface of the keel 5 is fixedly connected to a guide rail 14, the inner side surface of the guide rail 14 is provided with a windproof hook 16, the outer side surface of the keel 5 is fixedly connected to a lifting and fixing frame 8, the inner surface of the lifting and fixing frame 8 is rotatably connected to a lifting shaft 12, the sub-bracket plate 6 is fixedly connected with a bearing seat 7, the outer surface of the roller shutter output shaft 2 is provided with a variable diameter starting shaft 9, one side surface of the variable diameter starting shaft 9 is fixedly connected with a middle spindle 10, one side surface of the middle spindle 10 is fixedly connected with a variable diameter tail shaft 11, one side surface of the middle spindle 10 is fixedly connected with an arc-shaped transmission shaft 13, one side surface of the middle spindle 10 is fixedly connected with a conical rotating shaft 15, the outer surface of the middle spindle 10 is fixedly connected with a fireproof roller shutter curtain 18, and the outer surface of the middle spindle 10 is provided with a conical barrel 19; the fireproof roller shutter motor 4 is provided with multiple groups, which can be precisely controlled by the fireproof roller shutter control box 17 according to the operating requirements and space characteristics of the roller shutter. Through the above structure, when in use, the main bracket plate 1 is an important supporting position on the fireproof roller shutter One of them is that this product is made of 5mm thick high-strength steel plates pressed together, and sheet metal technology is added at the main load-bearing position to greatly improve the bending resistance. There is also a motor output shaft 3 on the main bracket plate 1. The motor output shaft 3 is composed of a small sprocket with 7-9 teeth, which is transmitted to a large connecting wheel with 25-27 teeth through a chain. The mechanical properties of the chain are used to achieve deceleration and increase the pulling force, which solves the problem of speed ratio and pulling force ratio. A roller shutter output shaft 2 is also provided on the large chain. In addition, with the fireproof roller shutter motor 4, the size of the roller shutter can be controlled within the range of 190X200, and the fireproof roller shutter motors 4 can also be overlapped and turned, and the right-angle roller shutter can also be made into a corresponding right-angle shape without scratching the ceiling structure. Structure, the auxiliary bracket plate 6 is used in conjunction with the main bracket plate 1. The auxiliary bracket plate 6 and the main bracket plate 1 are one of the main load-bearing positions. The auxiliary bracket plate 6 is also made of 5mm high-strength steel plate in one piece. The sheet metal process is also added to the main load-bearing position. There are positioning holes specially made for the bearing bracket on the auxiliary bracket plate 6. The positioning shaft rod on the variable diameter tail shaft 11 is installed on the fixed bearing seat 7 to keep it rotating smoothly. The keel 5 of the exoskeleton L-profile adopts 40X3mm angle steel, which makes the outer keel 5 have a strong supporting effect, so that the roller shutter can be hoisted or installed on the wall. The hoisting crossarm is installed above the keel 5 of the roller shutter by mechanical means. The rooting point can be directly made on the crossarm, or the corresponding other methods of grafting and rooting can be done.Such as hoisting or hoisting lateral rooting, the composition of the variable diameter starting shaft 9 includes: a small diameter shaft tube, an annular baffle, and a rolling shutter tooth plate. This position is installed on the bracket plate side of the middle main shaft 10. Since the long-distance rolling shutter is completed by overlapping, there needs to be an overlapping position and a special connection position. Therefore, this position not only plays the role of keeping the outer edge of the entire rolling shutter unchanged, but also plays the role of telescopic overlapping rolling shutter. The middle main shaft 10 position is the shaft tube that completely fixes the curtain cloth. Positioning installation holes will be punched at this position to facilitate the use of curtain cloth installation and fastening plates. The connection position of the shaft tube of the variable diameter starting shaft 9 and the variable diameter tail shaft 11 adopts welding technology and cooperates with anti-corrosion effect. The composition of the variable diameter tail shaft 11 includes an annular baffle, shaft plate and support shaft. The role of this position is the same as that of the variable diameter starting shaft 9. The role of the diameter starting shaft 9 is the same as that of the roller shutter, the difference is that the diameter-reducing starting shaft 9 is installed on the position of the main bracket plate 1 through the tooth plate, and the diameter-reducing tail shaft 11 is installed on the auxiliary bracket plate 6 through the support shaft, which also plays a supporting role. The lifting and fixing frame 8 includes a variety of parts: high-strength sheet metal, high-strength thread, anti-loosening nut, lifting shaft 12, the role of this position is that due to the combination of the arc-shaped turning transmission shaft, the roller will be concave downward due to the action of gravity, so the lifting and fixing frame 8 is needed to lift the entire roller shutter. At the same time, the roller shutter is to perform axial movement, and the lifting bracket also needs to be equipped with a lifting part that can realize axial movement. The arc transmission shaft 13 includes an arc-shaped steering mechanism, an arc-shaped adjustment angle mechanism, an arc-shaped flexible support material, etc., through mechanical means The middle main shaft 10 is connected to each other to realize the steering function. Because the arc-shaped flexible support material is used, the curtain of the entire roller shutter can be prevented from being torn and damaged due to mechanical action. The guide rail 14 material is 201 stainless steel with film material, which is pressed by shaft rollers with multiple times, multiple forces and multiple directions. It is equipped with a fire-proof expansion sealing strip with an expansion coefficient of 25 times. The external shape and high-strength support are achieved through the performance of sheet metal, and the top of the guide rail 14 is also equipped with an arc-shaped outlet for the windproof hook 16 of the roller shutter to enter and exit, which can effectively prevent the windproof hook 16 of the roller shutter from rubbing when entering and exiting the guide rail 14, resulting in poor operation of the roller shutter. A cone barrel and a cone rotating shaft 15 are required between the arc-shaped transmission shaft 13 and the middle main pipe. Through the cone The structure can be better to achieve product optimization. The product feature of the windproof hook 16 is to prevent the curtain from running out of the guide rail 14 and losing the fire and smoke barrier effect. Since the inside of the guide rail 14 does not see sunlight all year round and is dark and humid, the material of the windproof hook 16 is 304 stainless steel. The windproof hook 16 consists of two stainless steel nuts with nylon anti-rotation and a stainless steel hexagon socket head capless bolt. The length of the capless hexagon socket head bolt can be adjusted appropriately according to the width of the guide rail 14, and a stainless steel gasket needs to be installed between the two nuts to prevent the curtain from being torn. It also plays a role in preventing the windproof hook 16 rolled into the reel from damaging the curtain. The finished product of the fireproof roller shutter control box 17 contains many internal components including a super integrated controller PLC.Motor protectors, relays, limit receiving modules, etc. The controller can control the rise and fall and lifting tests of up to 30 motors at a time, which can fully meet the design requirements of the site. Secondly, in order to better meet the requirements of the site, a PLC program interface can be added to control the lifting and lowering status of the roller shutter according to the site requirements. In the case of multiple motors, it can be theoretically extended indefinitely. When using a single motor, it can meet the precise control of straight or special-shaped roller shutters within 100 meters. The curtain fabric of the fireproof roller shutter is composed of multiple layers of materials. The structural layer is a steel wire structure layer woven with stainless steel wire. The fireproof layer has a honeycomb structure and a heat-resistant structure. The structural layer can easily withstand a tensile force of 1000N without breaking. And because the fireproof layer is tightly connected to the structural layer, it has a very large burning barrier to the burning of flames. And because of the use of advanced titanium dioxide smoke barrier technology, it can achieve flame retardant and smoke barrier effects at a high temperature of 1000 degrees.

[0051] Furthermore, multiple groups of keels 5 are provided, and the keels 5 connect the main support plate 1 and the auxiliary support plate 6. Through the setting of the keels 5, when in use, multiple groups of keels 5 are evenly distributed, and jointly undertake the connection and support tasks between the main support plate 1 and the auxiliary support plate 6, thereby enhancing the stability of the overall structure, dispersing the weight of the roller shutter, and enabling the main and auxiliary support plates to work together better, ensuring that the roller shutter is structurally stable during the lifting process and will not be deformed or damaged due to uneven force.

[0052] Furthermore, the roller shutter output shaft 2 and the variable diameter starting shaft 9 correspond to each other, and the bearing seat 7 and the variable diameter tail shaft 11 correspond to each other. Through the setting of the roller shutter output shaft 2 and the variable diameter starting shaft 9, when in use, the roller shutter output shaft 2 accurately transmits the power transmitted by the motor on the main bracket plate 1 to the variable diameter starting shaft 9, driving it to rotate. After receiving the power, the variable diameter starting shaft 9 cooperates with the central main shaft 10 through its own structure to realize the extension and contraction of the roller shutter.

[0053] Furthermore, multiple sets of arc-shaped transmission shafts 13 and tapered rotating shafts 15 are provided, and the angles of the multiple central spindles 10 can be adjusted through the arc-shaped transmission shafts 13 and tapered rotating shafts 15. Through the provision of the arc-shaped transmission shafts 13 and tapered rotating shafts 15, when in use, the arc-shaped steering mechanism and arc-shaped angle adjustment mechanism in the arc-shaped transmission shaft 13 begin to operate, driving the central spindle 10 to rotate and change its angle through a mechanical connection. The tapered rotating shaft 15 utilizes its special tapered structure to provide a smooth transition for the curtain during the steering process of the central spindle 10, allowing the curtain to move smoothly during steering, reducing friction and damage, while achieving a smoother arc with a smaller conversion angle, meeting the installation and use requirements of the roller blind in different spaces.

[0054] Furthermore, multiple groups of lifting shafts 12 are provided, and multiple groups of central spindles 10 are provided. Through the provision of the lifting shafts 12, when in use, multiple groups of lifting shafts 12 are evenly distributed on the lifting fixing frame 8, and jointly lift the multiple groups of central spindles 10. Since the central spindle 10 will generate downward pressure due to gravity and the tension of the curtain when rolling the curtain, the multiple groups of lifting shafts 12 can disperse these pressures, ensuring that the central spindle 10 will not be excessively concave due to the action of gravity during operation, maintaining its horizontal state, and ensuring smooth axial movement of the roller curtain.

[0055] Furthermore, the conical barrel 19 includes a support shaft 191, a stepped shaft 192, and a mechanical connection hole 193. The inner surface of the conical barrel 19 is fixedly connected to the support shaft 191, the outer surface of the conical barrel 19 is fixedly connected to the stepped shaft 192, and a mechanical connection hole 193 is opened on one side surface of the conical barrel 19. Through the arrangement of the conical barrel 19, the support shaft 191, the stepped shaft 192, and the mechanical connection hole 193, when in use, the support shaft 191 provides internal support for the conical barrel 19, ensuring its structural strength and preventing deformation when cooperating with other components. The stepped shaft 192 can cooperate with the corresponding structures of other components to play a positioning and guiding role, ensuring accurate connection and smooth operation between components. The mechanical connection hole 193 is used to fixedly connect the conical barrel 19 to other components such as the central spindle 10 through bolts and other connectors, so that the conical barrel 19 can rotate with the central spindle 10 during the operation of the roller blind, playing its auxiliary support role in the transition and turning process of the curtain fabric.

[0056] Furthermore, the overlapping methods of the multi-motor steering fireproof roller shutter include upper and lower overlapping and left and right overlapping. Through the above structure, when in use, the upper and lower overlapping and left and right overlapping methods provide more options for the installation and use of the fireproof roller shutter in different spatial environments. According to the height, width and other characteristics of the space, a suitable overlapping method can be selected to ensure that the fireproof roller shutter can effectively cover the area that needs protection and achieve a good fire separation effect.

[0057] Furthermore, in the upper and lower overlapping method, the overlapping distance between the two rolling shutter boxes is 500mm, and the curtain overlapping size is 300mm. Through the above structure, when in use, the upper and lower overlapping method is suitable for places with sufficient height space but narrow width. The 500mm rolling shutter box overlapping distance and 300mm curtain overlapping size can ensure a tight connection between the two rolling shutters, reduce the possibility of air leakage, and improve fire protection performance. At the same time, this overlapping method can achieve a longer rolling shutter length in a limited width space, meeting the needs of fire separation.

[0058] Furthermore, in the left and right overlap mode, the box overlap width is 500mm and the curtain overlap width is 300mm. Through the above structure, when in use, the left and right overlap mode is suitable for situations where the height of the top and bottom overlaps cannot meet the requirements and the overlap length of the box roller shutter needs to be increased or the direction needs to be changed. The box overlap width of 500mm and the curtain overlap width of 300mm can ensure that the roller shutter is firmly connected in the left and right directions, and also reduce air leakage and improve fire protection performance. This overlap method can increase the coverage of the roller shutter by overlapping in the left and right directions when the height is limited, thereby achieving effective fire separation.

[0059] Furthermore, the lifting fixing frame 8 and the lifting shaft 12 form a lifting device, the lifting shaft 12 is rotatably connected to the auxiliary bracket plate 6 through the bearing seat 7, and the bearing seat 7 and the variable diameter tail shaft 11 cooperate to form a steering support structure. Through the above structure, when in use, the lifting device and the bearing are linked to achieve stable support and angle adjustment of the main shaft 10 in multiple groups during steering.

[0060] Working principle: After the driving motor 4 is started, the motor output shaft 3 drives the small sprocket on the main bracket plate 1 to rotate, and the small sprocket is transmitted to the large connecting wheel through the chain to achieve deceleration and increase the pulling force. The power is then transmitted through the roller shutter output shaft 2, driving the connected variable diameter starting shaft 9, the middle main shaft 10 and other components to rotate, thereby rolling up the fireproof roller shutter curtain 18 to realize the lifting and lowering of the roller shutter. The fireproof roller shutter control box 17 controls the operation of the driving motor 4 and accurately adjusts the movement of the roller shutter. The keel 5 plays the role of supporting and connecting the main and auxiliary bracket plates to ensure the stability of the overall structure. The guide rail 14 provides guidance for the lifting and lowering of the roller shutter. The windproof hook 16 prevents the curtain from escaping from the guide rail to ensure the fire and smoke barrier effect. The lifting shaft 12 plays a lifting role on the main shaft 10 to prevent it from sinking due to gravity, ensuring smooth axial movement of the roller shutter. The bearing seat 7 provides support for the variable diameter tail shaft 11 so that it can rotate smoothly. The arc-shaped transmission shaft 13 and the tapered rotating shaft 15 cooperate to help the main shaft 10 to achieve steering and adjust the angle to adapt to different space requirements. The tapered barrel 19, through its special structure, plays an auxiliary support and connection role in the connection and movement of components. When encountering different roller shutter operation scenarios, such as different roller shutter sizes, installation spaces and fire zoning requirements, the super integrated controller PLC in the fire shutter control box 17 will send to different groups of drive motors 4 according to preset programs or on-site instructions. Signal, accurately control the start, stop, speed and direction of each drive motor 4, so that the roller shutter can meet complex operation requirements and space characteristics, the upper and lower overlap and left and right overlap methods provide more options for the installation and use of fire shutters in different space environments. According to the height, width and other characteristics of the space, you can choose a suitable overlap method to ensure that the fire shutter can effectively cover the area that needs to be protected and achieve a good fire separation effect. The upper and lower overlap method is suitable for places with sufficient height space but narrow width. The 500mm roller shutter box overlap distance and 300mm curtain overlap size can ensure a tight connection between the two roller shutters, reduce the possibility of air leakage, and improve fire resistance. Yes, at the same time, this overlap method can achieve a longer roller shutter length in a limited width space to meet the needs of fire separation. The left and right overlap method is suitable for the situation where the height of the top and bottom overlaps cannot meet the requirements, and the overlap length of the box roller shutter needs to be increased or the direction needs to be changed. The box overlap width of 500mm and the curtain overlap width of 300mm can ensure that the roller shutter is firmly connected in the left and right directions, and also reduce air leakage and improve fire performance. This overlap method can increase the coverage of the roller shutter by overlapping in the left and right directions when the height is limited, and realize effective fire separation. Regardless of the height or width, the total maximum width and height of the box after overlap is within 390mm.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-motor steering fireproof rolling shutter, comprising a main support plate (1), characterized in that: The side surface of the main bracket plate (1) is fixedly connected to the roller shutter output shaft (2), the side surface of the main bracket plate (1) is fixedly connected to the motor output shaft (3), the side surface of the motor output shaft (3) is fixedly connected to the fireproof roller shutter motor (4), the outer surface of the fireproof roller shutter motor (4) is electrically connected to the fireproof roller shutter control box (17), the side surface of the main bracket plate (1) is fixedly connected to the keel (5), the side surface of the keel (5) is fixedly connected to the auxiliary bracket plate (6), the outer surface of the keel (5) is fixedly connected to the guide rail (14), the inner surface of the guide rail (14) is provided with a windproof hook (16), the outer surface of the keel (5) is fixedly connected to the lifting fixing frame (8), the support The inner surface of the lifting fixed frame (8) is rotatably connected to a lifting shaft (12), one side surface of the auxiliary bracket plate (6) is fixedly connected to a bearing seat (7), the outer surface of the rolling shutter output shaft (2) is provided with a variable diameter starting shaft (9), one side surface of the variable diameter starting shaft (9) is fixedly connected to a middle main shaft (10), one side surface of the middle main shaft (10) is fixedly connected to a variable diameter tail shaft (11), one side surface of the middle main shaft (10) is fixedly connected to an arc-shaped transmission shaft (13), one side surface of the middle main shaft (10) is fixedly connected to a conical rotating shaft (15), the outer surface of the middle main shaft (10) is fixedly connected to a fireproof rolling shutter curtain (18), and the outer surface of the middle main shaft (10) is provided with a conical barrel (19); The fireproof rolling shutter motor (4) is provided with multiple groups, and can be accurately controlled by the fireproof rolling shutter control box (17) according to the operation requirements of the rolling shutter and the characteristics of the space.

2. The multi-motor steering fireproof roller shutter according to claim 1, characterized in that: The keels (5) are provided in multiple groups, and the keels (5) connect the main support plate (1) and the auxiliary support plate (6).

3. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: The roller blind output shaft (2) and the variable diameter starting shaft (9) correspond to each other, and the bearing seat (7) and the variable diameter tail shaft (11) correspond to each other.

4. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: The arc-shaped transmission shafts (13) and the conical rotation shafts (15) are provided in multiple groups, and the multiple groups of the central spindles (10) can adjust the angles through the arc-shaped transmission shafts (13) and the conical rotation shafts (15).

5. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: The lifting shafts (12) are provided in multiple groups, and the central main shafts (10) are provided in multiple groups.

6. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: The conical barrel (19) comprises a support shaft (191), a stepped shaft (192) and a mechanical connection hole (193); the inner surface of the conical barrel (19) is fixedly connected to the support shaft (191); the outer surface of the conical barrel (19) is fixedly connected to the stepped shaft (192); and a mechanical connection hole (193) is provided on one side surface of the conical barrel (19).

7. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: The overlapping modes of the multi-motor steering fireproof rolling curtain include upper and lower overlapping and left and right overlapping.

8. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: In the upper and lower overlapping method, the overlapping distance between the two rolling shutter boxes is 500mm, and the overlapping size of the curtain fabric is 300mm.

9. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: In the left-right overlapping mode, the box overlapping width is 500 mm, and the curtain overlapping width is 300 mm.

10. The multi-motor steering fireproof rolling shutter according to claim 1, characterized in that: The lifting fixing frame (8) and the lifting shaft (12) form a lifting device, the lifting shaft (12) is rotatably connected to the auxiliary bracket plate (6) through the bearing seat (7), and the bearing seat (7) cooperates with the variable diameter tail shaft (11) to form a steering support structure.

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