Fire resisting shutter installation structure capable of saving transverse space and curve combined type fire resisting shutter

Abstract

The utility model provides a fireproof roller shutter mounting structure capable of saving transverse space and a curve combined fireproof roller shutter, and the fireproof roller shutter mounting structure capable of saving transverse space comprises a plurality of groups of vertical roller shutters and flexible roller shutters which are sequentially and alternately arranged along the path of a fireproof hole, the side edges of each group of flexible roller shutters are respectively lapped with the side edges of the adjacent vertical roller shutters; the vertical roller shutter comprises a mounting plate, a door rolling machine and two rolling shafts, the door rolling machine and the two rolling shafts are arranged on the mounting plate, the mounting plate is used for being hoisted and fixed above a suspended ceiling layer, and the bottom of the mounting plate is connected with the top end of the flexible roller shutter; wherein the top of the mounting plate is provided with a convex plate extending upwards, the door rolling machine is connected to the convex plate, the two rolling shafts are located below the convex plate and symmetrically distributed with a vertical shaft of the convex plate as the center, the door rolling machine is in transmission connection with the two rolling shafts together, and the two rolling shafts are driven by the door rolling machine to rotate in the same direction. According to the fireproof roller shutter installation structure capable of saving the transverse space, the transverse space occupied by a door rolling machine can be saved, and therefore the requirement for installation at the position with the narrow transverse space is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof rolling shutters, and particularly relates to a fireproof rolling shutter installation structure for saving horizontal space and a curve combined fireproof rolling shutter. Background Art

[0002] The atrium of a large commercial complex project is usually a large-span, column-free, and curved transparent space. For such a space feature, a combined fireproof rolling shutter needs to be adopted. The combined fireproof rolling shutter is mainly composed of multiple single-pane inorganic composite fireproof rolling shutters. For the opening position with a large span and irregular shape, a flexible rolling shutter needs to be arranged between adjacent vertical rolling shutters, so that the flexible rolling shutter bends along with the irregular shape.

[0003] Components such as the installation support and the rolling door machine of the combined fireproof rolling shutter need to be installed above the ceiling layer of the building, and sufficient horizontal installation space is required. When various pipelines and bridge structures are arranged around the installation position or the installation position is close to the side wall, it is easy to cause limited horizontal installation, thus affecting the use of the combined fireproof rolling shutter. In view of this actual situation, it is urgent to improve the installation structure of the combined fireproof rolling shutter. Summary of the Utility Model

[0004] An embodiment of the utility model provides a fireproof rolling shutter installation structure for saving horizontal space and a curve combined fireproof rolling shutter, aiming to compress the horizontal installation space of the combined fireproof rolling shutter.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows: In the first aspect, a fireproof rolling shutter installation structure for saving horizontal space is provided, which includes a plurality of groups of vertical rolling shutters and flexible rolling shutters arranged alternately along the path of the fireproof opening in sequence. The side edges of each group of flexible rolling shutters are respectively lapped with the side edges of the adjacent vertical rolling shutters; the vertical rolling shutter includes a mounting plate, a rolling door machine and two scroll shafts arranged on the mounting plate. The mounting plate is used for hoisting and fixing above the ceiling layer, and the bottom is connected with the top end of the flexible rolling shutter; wherein, the top of the mounting plate has a convex plate extending upward, the rolling door machine is connected to the convex plate, the two scroll shafts are located below the convex plate and are symmetrically distributed with the vertical axis of the convex plate as the center, the rolling door machine is in transmission connection with the two scroll shafts together, and the two scroll shafts rotate in the same direction under the drive of the rolling door machine.

[0006] In combination with the first aspect, in a possible implementation manner, a driving sprocket is sleeved on the output end of the rolling door machine, synchronous sprockets are respectively sleeved on the same ends of the two scroll shafts, and the two synchronous sprockets and the driving sprocket are jointly sleeved with a chain to make the two scroll shafts rotate in the same direction.

[0007] In some embodiments, the vertical rolling curtain further includes two supporting rollers, which are located above the suspended ceiling layer and are respectively arranged below the sides of the two rolling shafts; wherein, a first curtain cloth and a second curtain cloth are respectively wound on the two rolling shafts, the winding directions of the first curtain cloth and the second curtain cloth are the same, and they respectively overlap with the two supporting rollers correspondingly.

[0008] Exemplarily, the first curtain cloth and the second curtain cloth are respectively unrolled from the same side of the two rolling shafts and respectively overlap with the same side of the two supporting rollers correspondingly.

[0009] For example, the first curtain cloth is unrolled from the lower rim of the rolling shaft and overlaps with the side of the corresponding supporting roller close to the second curtain cloth, and the second curtain cloth is unrolled from the upper rim of the rolling shaft and overlaps with the side of the corresponding supporting roller close to the first curtain cloth.

[0010] In a possible implementation manner, the flexible rolling curtain includes a towing rope, a first flexible curtain and a second flexible curtain. The first flexible curtain overlaps with the first curtain cloth, and the second flexible curtain overlaps with the second curtain cloth; wherein, a plurality of connecting rods are distributed at intervals up and down between the first flexible curtain and the second flexible curtain, a perforation is provided at the middle position of each connecting rod, and the towing rope sequentially passes through each perforation from top to bottom and is fixed to the lowermost connecting rod.

[0011] In some embodiments, two first guide wheels are rotatably connected to the mounting plate. The two first guide wheels are distributed at intervals below the driving sprocket and are located between the two synchronous sprockets; wherein, the two first guide wheels are respectively used for rolling the chain downward.

[0012] Exemplarily, an avoidance groove is formed at the bottom of the mounting plate, and the top end of the flexible rolling curtain extends into the avoidance groove.

[0013] For example, two second guide wheels are rotatably connected to the mounting plate. The two second guide wheels are distributed at intervals between the two synchronous sprockets and are both located above the avoidance groove. The two second guide wheels are used for supporting the chain upward.

[0014] The beneficial effect of the fireproof rolling curtain installation structure for saving lateral space provided by the present utility model is that: compared with the prior art, in the fireproof rolling curtain installation structure for saving lateral space of the present utility model, the vertical rolling curtain and the flexible rolling curtain are alternately overlapped along the path of the fireproof opening in turn, and can be conformally bent by using the bending or flexing angle of the flexible rolling curtain corresponding to the fireproof opening, so as to meet the installation requirements of large-span irregular-shaped fireproof openings; on this basis, the rolling door machine of the vertical rolling curtain can be installed on the convex plate extending upward from the top of the mounting plate, which can save the lateral space occupied by the rolling door machine compared with the existing structure with the rolling door machine arranged on the side of the rolling shaft, so that the overall structure is compressed in the lateral installation space, thereby meeting the installation requirements of the combined fireproof rolling curtain at positions where the lateral space is narrow due to the layout of pipelines and bridge frames above the suspended ceiling layer or near the side wall, and eliminating the application limitation of the combined fireproof rolling curtain by the horizontal lateral installation space.

[0015] In a second aspect, an embodiment of the present utility model further provides a curve combined fire shutter, including the above-mentioned fire shutter installation structure that saves horizontal space.

[0016] The beneficial effect of the curve combined fire shutter provided by the present utility model is as follows: Compared with the prior art, the curve combined fire shutter of the present utility model adopts the above-mentioned fire shutter installation structure that saves horizontal space. The door machine of the vertical shutter can be installed on the convex plate extending upward from the top of the installation plate. Compared with the existing structure in which the door machine is arranged on the side of the reel, it can save the horizontal space occupied by the door machine, so that the overall structure is compressed in the horizontal installation space, thereby meeting the requirement of installing the combined fire shutter at a position where the horizontal space is narrow due to the layout of pipelines and cable trays above the suspended ceiling layer or near the side wall, and eliminating the application limitation of the horizontal installation space on the combined fire shutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the fire shutter installation structure that saves horizontal space provided by an embodiment of the present utility model;

[0018] Figure 2 is a sectional structural schematic diagram of the fire shutter installation structure that saves horizontal space provided by an embodiment of the present utility model at the overlapping position of the vertical shutter and the flexible shutter;

[0019] Figure 3 is a sectional structural schematic diagram of the fire shutter installation structure that saves horizontal space provided by another embodiment of the present utility model at the overlapping position of the vertical shutter and the flexible shutter;

[0020] Figure 4 is Figure 3 a partial enlarged structural schematic diagram at A in

[0021] In the figure: 10, vertical shutter; 11, installation plate; 111, convex plate; 112, first guide wheel; 113, avoidance groove; 114, second guide wheel; 12, door machine; 121, drive sprocket; 122, chain; 13, reel; 131, synchronous sprocket; 14, idler roller; 15, first curtain; 16, second curtain; 17, guide rail; 20, flexible shutter; 21, first soft curtain; 22, second soft curtain; 23, towing rope; 24, connecting rod; 241, perforation; 30, suspended ceiling layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "upper", "lower", "front", "rear", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0024] Please also read Figures 1 to 4 , the fireproof roller shutter installation structure for saving horizontal space provided by the utility model is now described. The fireproof roller shutter installation structure for saving horizontal space comprises a plurality of groups of vertical roller shutters 10 and flexible roller shutters 20 arranged alternately in sequence along the path of the fireproof hole, and the side edges of each group of flexible roller shutters 20 overlap the side edges of the adjacent vertical roller shutters 10 respectively; the vertical roller shutter 10 comprises a mounting plate 11, and a roller shutter machine 12 and two rollers 13 arranged on the mounting plate 11, the mounting plate 11 is used for hanging and fixing above the ceiling layer 30, and the bottom is connected to the top of the flexible roller shutter 20; wherein, the top of the mounting plate 11 has a convex plate 111 extending upward, the roller shutter machine 12 is connected to the convex plate 111, the two rollers 13 are located below the convex plate 111 and are symmetrically distributed with the vertical axis of the convex plate 111 as the center, the roller shutter machine 12 is connected to the two rollers 13 in a transmission connection, and the two rollers 13 rotate in the same direction driven by the roller shutter machine 12.

[0025] It should be explained that, in the present embodiment, each group of vertical roller shutters 10 and flexible roller shutters 20 are single-frame fireproof roller shutters in the prior art, and the rolling door machine 12 of the vertical roller shutters 10 is specifically a rolling door machine 12 for fireproof roller shutters that meets the supporting standards required by GB14102, wherein the vertical roller shutters 10 utilize the guiding constraints of the guide rails 17 in the vertical direction to form a vertical lifting and closing mode, and the flexible roller shutters 20 can be bent according to the shape of the fire opening. In order to ensure the tightness of the overlap between the flexible roller shutters 20 and the vertical roller shutters 10, the overlap width between the two is not less than five hundred millimeters, and when the two are extended downward to close the fire opening, the overlap area is adsorbed and connected by a magnetic suction part, thereby ensuring the overlapping sealing effect.

[0026] In this embodiment, the mounting plate 11 is integrally in a convex shape based on the convex plate 111 extending upward from its top. The mounting plate 11 can be connected to the roof beam in a manner of being suspended and fixed by a hanging rod. At the same time, as the installation basis of the rolling door machine 12 and the reel 13, the mounting plate 11 should be located above the suspended ceiling layer 30. On this basis, the two reels 13 are respectively rotatably connected to the transverse ends of the mounting plate 11, and the rolling door machine 12 is installed on the convex plate 111. It is equivalent that the rolling door machine 12 and the two reels 13 are respectively located at the three vertices of an isosceles triangle. Compared with the existing technology in which the rolling door machine 12 and the two reels 13 are arranged horizontally on the same plane, the occupation of the transverse space by the rolling door machine 12 can be saved. In addition, the two reels 13 are driven by the rolling door machine 12 to rotate in the same direction, which is beneficial to shortening the power transmission path between the rolling door machine 12 and the two reels 13, thereby improving the compactness of the transmission structure and being beneficial to further reducing the installation space required.

[0027] The fireproof rolling shutter installation structure for saving transverse space provided in this embodiment, compared with the prior art, the vertical rolling shutter 10 and the flexible rolling shutter 20 are alternately overlapped along the path of the fireproof opening in sequence, and the flexible rolling shutter 20 can be bent conformally by using the bending or flexing angle corresponding to the fireproof opening, so as to meet the installation requirements of large-span irregular-shaped fireproof openings. On this basis, the rolling door machine 12 of the vertical rolling shutter 10 can be installed on the convex plate 111 extending upward from the top of the mounting plate 11. Compared with the existing structure in which the rolling door machine 12 is arranged on the side of the reel 13, the transverse space occupied by the rolling door machine 12 can be saved, so that the overall structure is compressed in the transverse installation space, thereby meeting the installation requirements of the combined fireproof rolling shutter at the position where the transverse space is narrow due to the layout of pipelines and cable bridges above the suspended ceiling layer 30 or near the side wall, and eliminating the application limitation of the combined fireproof rolling shutter by the horizontal transverse installation space.

[0028] In some embodiments, referring to Figure 2 and Figure 3 , a driving sprocket 121 is sleeved on the output end of the rolling door machine 12, and synchronous sprockets 131 are respectively sleeved on the same ends of the two reels 13. The two synchronous sprockets 131 and the driving sprocket 121 are jointly sleeved with a chain 122 to make the two reels 13 rotate in the same direction. After the chain 122 is sleeved on the driving sprocket 121 and the two synchronous sprockets 131, an approximate isosceles triangle transmission path is formed. Thus, the two synchronous sprockets 131 can be driven by the driving sprocket 121 to rotate in the same direction to realize the synchronous winding and unwinding actions of the two reels 13, thereby avoiding occupying the transverse space outside the two reels 13, and making the transverse dimension of the mounting plate 11 close to the transverse spacing of the two reels 13, so as to meet the installation requirements of the combined fireproof rolling shutter at the position where the transverse installation space is narrow.

[0029] As a deformation implementation manner of the above vertical rolling shutter 10, please refer toFigure 2 and Figure 3 The vertical rolling curtain 10 further includes two supporting rollers 14, both of the two supporting rollers 14 are located above the ceiling layer 30 and are respectively arranged under the sides of the two winding shafts 13; wherein, a first curtain cloth 15 and a second curtain cloth 16 are respectively wound on the two winding shafts 13, the winding directions of the first curtain cloth 15 and the second curtain cloth 16 are the same and they respectively overlap and are supported by the two supporting rollers 14 correspondingly.

[0030] Since the winding layers of the first curtain cloth 15 and the second curtain cloth 16 on the winding shaft 13 are directly related to the diameter of the winding shaft 13, in order to avoid the lateral position change of the first curtain cloth 15 and the second curtain cloth 16 caused by the change of the diameter of the winding shaft 13, here two supporting rollers 14 are respectively used to overlap and support the first curtain cloth 15 and the second curtain cloth 16 wound on the two winding shafts 13, so that the first curtain cloth 15 and the second curtain cloth 16 can always extend downward along the supporting rollers 14 after passing through the supporting rollers 14, thus ensuring that the first curtain cloth 15 and the second curtain cloth 16 are always in a vertically stable state of being parallel and spaced from each other, which is beneficial to improving the fire and smoke prevention and sealing effect.

[0031] Optionally, as Figure 2 shown, in this embodiment, the first curtain cloth 15 and the second curtain cloth 16 are respectively unwound from the same side of the two winding shafts 13 and respectively overlap and are supported on the same side of the two supporting rollers 14 correspondingly. Since the two synchronous sprockets 131 rotate in the same direction driven by the driving sprocket 121, therefore, when the first curtain cloth 15 and the second curtain cloth 16 are wound in the same direction and are unwound from the same side of the winding shaft 13, in this case, by overlapping the first curtain cloth 15 and the second curtain cloth 16 on the same side of the two supporting rollers 14 respectively, it can be formed that after the first curtain cloth 15 and the second curtain cloth 16 are spread out, they are respectively offset to the sides of the two winding shafts 13, which is beneficial to meeting the lateral installation space requirements of the installation environment where there is sufficient space on one side and less space on the other side.

[0032] Exemplarily, please refer to Figure 3 , the first curtain cloth 15 is unwound from the lower rim of the winding shaft 13 and overlaps on the side of the corresponding supporting roller 14 close to the second curtain cloth 16, and the second curtain cloth 16 is unwound from the upper rim of the winding shaft 13 and overlaps on the side of the corresponding supporting roller 14 close to the first curtain cloth 15. Specifically, after the first curtain cloth 15 and the second curtain cloth 16 are unwound, they both pass through between the two supporting rollers 14 and respectively overlap on the roller surfaces of the two supporting rollers 14 close to each other. In this case, the first curtain cloth 15 and the second curtain cloth 16 can be kept directly below the mounting plate 11 through the constraint of the supporting rollers 14 on the first curtain cloth 15 and the second curtain cloth 16, thereby improving the force balance of the mounting plate 11 and being beneficial to improving the overall installation stability.

[0033] In some possible implementation manners, please refer to Figure 3 and Figure 4, the flexible rolling curtain 20 includes a towing rope 23, a first soft curtain 21 and a second soft curtain 22. The first soft curtain 21 overlaps with the first curtain cloth 15, and the second soft curtain 22 overlaps with the second curtain cloth 16. Among them, a plurality of connecting rods 24 are distributed at intervals up and down between the first soft curtain 21 and the second soft curtain 22. A through hole 241 is provided at the middle position of each connecting rod 24. The towing rope 23 passes through each through hole 241 from top to bottom and is fixed to the lowermost connecting rod 24. Connecting and supporting the first soft curtain 21 and the second soft curtain 22 through the connecting rod 24 can keep a stable interval distance between the first soft curtain 21 and the second soft curtain 22, thereby improving the overlapping tightness between the first soft curtain 21 and the first curtain cloth 15, and between the second soft curtain 22 and the second curtain cloth 16, and further improving the overlapping and sealing effect of the vertical rolling curtain 10 and the flexible rolling curtain 20. On this basis, by providing through holes 241 on each connecting rod 24 and passing the towing rope 23 through each connecting rod 24 and connecting it to the connecting rod 24 at the lower ends of the first soft curtain 21 and the second soft curtain 22, the towing force of the towing rope 23 can be used to drive the first soft curtain 21 and the second soft curtain 22 to lift and lower synchronously. Thus, the flexible rolling curtain 20 can be opened and closed by a single driving member acting on the towing rope 23 (such as a motor driving a drum to wind the towing rope 23), thereby simplifying the driving structure of the flexible rolling curtain 20, further improving the overall structural compactness, and reducing the occupation of installation space.

[0034] To increase the wrap angle of the chain 122 around the driving sprocket 121 and the two synchronous sprockets 131, as Figure 3 shown, two first guide wheels 112 are rotatably connected to the mounting plate 11. The two first guide wheels 112 are distributed at intervals below the driving sprocket 121 and between the two synchronous sprockets 131. Among them, the two first guide wheels 112 are respectively used for rolling the chain 122 downward. Since there is a situation where the wrap angle of the driving sprocket 121 and the two synchronous sprockets 131 distributed in a triangle is relatively small when driven by a single chain 122, this may increase the risk of the chain 122 falling off and disengaging from the teeth. Therefore, by providing the first guide wheels 112 to change the transmission path of the chain 122 and increase the wrap angle, the connection and transmission stability of the chain 122 can be improved.

[0035] In some possible implementation manners, please refer to Figure 3, an avoidance groove 113 is formed at the bottom of the mounting plate 11, and the top end of the flexible rolling curtain 20 extends into the avoidance groove 113. Since the edges of the vertical rolling curtain 10 and the flexible rolling curtain 20 are sealed by overlapping each other, it is necessary to arrange the mounting plate 11 across the flexible rolling curtain 20. In this way, the installation space required in the longitudinal direction, that is, the height direction, may be too large. For the installation position where pipelines and bridge structures are arranged above the ceiling layer 30, the installation height space may be insufficient. In view of this situation, in this embodiment, by forming the avoidance groove 113 at the bottom of the mounting plate 11, the top end portion of the flexible rolling curtain 20 can extend into the avoidance groove 113, so as to compress the height space required for the overall installation while avoiding the mounting plate 11 from rubbing and interfering with the flexible rolling curtain 20.

[0036] It should be noted that, please refer to Figure 3 , two second guide wheels 114 are rotatably connected to the mounting plate 11. The two second guide wheels 114 are spaced between the two synchronous sprockets 131 and are both located above the avoidance groove 113. The two second guide wheels 114 are used to support the chain 122 upward. By arranging the second guide wheels 114 to support the chain 122 upward, on the one hand, it can avoid the chain 122 from rubbing and interfering with the flexible rolling curtain 20 extending into the avoidance groove 113, and on the other hand, it can further increase the wrap angle between the chain 122 and the two synchronous sprockets 131, thereby further improving the transmission stability of the chain 122.

[0037] Based on the same inventive concept, in combination with Figures 1 to 4 understanding, the embodiment of the present application further provides a curve combination type fireproof rolling curtain, including the above-mentioned fireproof rolling curtain installation structure for saving horizontal space.

[0038] Compared with the prior art, the curve combination type fireproof rolling curtain provided by the present utility model adopts the above-mentioned fireproof rolling curtain installation structure for saving horizontal space. The curtain machine 12 of the vertical rolling curtain 10 can be installed on the convex plate 111 extending upward from the top of the mounting plate 11. Compared with the existing structure in which the curtain machine 12 is arranged on the side of the reel 13, the horizontal space occupied by the curtain machine 12 can be saved, so that the overall structure is compressed in the horizontal installation space, thereby meeting the requirement of installing the curve combination type fireproof rolling curtain at the position where the horizontal space is narrow due to the layout of pipelines and bridges above the ceiling layer 30 or near the side wall, and eliminating the application limitation of the horizontal installation space on the curve combination type fireproof rolling curtain.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A fireproof roller shutter installation structure that saves horizontal space, characterized in that: It comprises a plurality of groups of vertical rolling curtains and flexible rolling curtains which are alternately arranged in sequence along the path of the fireproof hole, and the side edges of each group of the flexible rolling curtains are overlapped with the side edges of the adjacent vertical rolling curtains; the vertical rolling curtain comprises a mounting plate, and a rolling door machine and two rollers arranged on the mounting plate, the mounting plate is used for hoisting and fixing above the suspended layer, and the bottom is connected to the top of the flexible rolling curtain; Among them, the top of the mounting plate has a convex plate extending upward, the rolling door machine is connected to the convex plate, the two rolling shafts are located below the convex plate and are symmetrically distributed with the vertical axis of the convex plate as the center, the rolling door machine is transmission-connected to the two rolling shafts, and the two rolling shafts rotate in the same direction driven by the rolling door machine.

2. The fireproof roller shutter installation structure for saving horizontal space according to claim 1, characterized in that: The output end of the rolling door machine is sleeved with a driving sprocket, and the same end of the two reels is sleeved with a synchronous sprocket respectively. The two synchronous sprockets and the driving sprocket are jointly sleeved with a chain to enable the two reels to rotate in the same direction.

3. The fireproof roller shutter installation structure for saving horizontal space according to claim 2, characterized in that: The vertical rolling blind also includes two rollers, both of which are located above the suspended layer and are respectively arranged on the lower sides of the two winding shafts; wherein the first curtain and the second curtain are respectively wound on the two winding shafts, the first curtain and the second curtain have the same winding direction and are respectively overlapped on the two rollers.

4. The fireproof roller shutter installation structure for saving horizontal space according to claim 3, characterized in that: The first curtain fabric and the second curtain fabric are respectively rolled up from the same side of the two winding shafts and overlapped on the same side of the two supporting rollers.

5. The fireproof roller shutter installation structure for saving horizontal space according to claim 3, characterized in that: The first curtain is unwound from the lower wheel edge of the reel and overlapped on the side of the corresponding roller close to the second curtain, and the second curtain is unwound from the upper wheel edge of the reel and overlapped on the side of the corresponding roller close to the first curtain.

6. The fireproof roller shutter installation structure for saving horizontal space according to claim 3, characterized in that: The flexible rolling curtain includes a traction rope, a first soft curtain and a second soft curtain, the first soft curtain overlaps the first curtain fabric, and the second soft curtain overlaps the second curtain fabric; wherein, a plurality of connecting rods are spaced apart above and below the first soft curtain and each of the connecting rods is provided with a through hole in the middle position, the traction rope passes through each of the through holes in sequence from top to bottom and is fixed to the lowest connecting rod.

7. The fireproof roller shutter installation structure for saving horizontal space according to claim 2, characterized in that: The mounting plate is rotatably connected to two first guide wheels, which are spaced apart and distributed below the driving sprocket and between the two synchronous sprockets; wherein the two first guide wheels are respectively used for rolling the chain downwards.

8. The fireproof roller shutter installation structure for saving horizontal space according to claim 2, characterized in that: The bottom of the mounting plate is provided with an avoidance groove, and the top end of the flexible rolling curtain extends into the avoidance groove.

9. The fireproof roller shutter installation structure for saving horizontal space according to claim 8, characterized in that: The mounting plate is rotatably connected to two second guide wheels, the two second guide wheels are spaced apart and distributed between the two synchronous sprocket wheels and are both located above the avoidance groove, and the two second guide wheels are used to support the chain upwards.

10. Curved combined fireproof roller shutter, characterized in that: It comprises a fireproof roller shutter installation structure for saving lateral space as described in any one of claims 1 to 9.

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