Horizontal reel mounting structure of combined fire resisting shutter and linear combined fire resisting shutter

Abstract

The utility model provides a horizontal reel mounting structure of a combined fire resisting shutter and a linear combined fire resisting shutter. The horizontal reel mounting structure comprises a plurality of first roller shutters and second roller shutters which are sequentially and alternately distributed along a straight line, the first roller shutter comprises two first reels and two pieces of first fireproof curtain cloth wound on the two first reels respectively; the second roller shutter comprises two second reels and two pieces of second fireproof curtain cloth wound on the two second reels respectively, and the edges of the second fireproof curtain cloth are in sealed lap joint with the edges of the first fireproof curtain cloth; the two first reels are connected through a first end plate, and the two second reels are connected through a second end plate; an avoiding notch is formed in the bottom of the second end plate, the two second reels are connected to the two sides of the avoiding notch respectively, and at least part of the two first reels stretch into the avoiding notch. According to the horizontal reel installation structure of the combined fire resisting shutter and the linear combined fire resisting shutter, the installation height space of the linear combined fire resisting shutter can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof rolling shutters, and particularly relates to a flat-mounted reel installation structure for a combined fireproof rolling shutter and a linear combined fireproof rolling shutter. Background Art

[0002] With the development of the building scale in China, especially in recent years, there are more and more large commercial complex projects. The fire compartments of such buildings usually belong to large-span, column-free, linear transparent commercial spaces. Due to the large width of the openings in the fire compartments, in order to meet the requirements for installing fireproof rolling shutters in the fire compartments, it is necessary to use more than two single vertical fireproof rolling shutters to form a linear combined fireproof rolling shutter. At the same time, in order to ensure the fire resistance integrity and the sealing and smoke prevention performance, an overlap of about 500 millimeters is usually provided between the curtain surfaces of adjacent vertical fireproof rolling shutters.

[0003] In actual installation and application, the linear combined fireproof rolling shutter needs to be installed in the space above the ceiling layer. Since adjacent vertical rolling shutters need to overlap each other, the installation supports at both ends of the vertical rolling shutters need to be installed in an upper and lower staggered manner. However, considering that there are usually intricate pipelines and bridge structures above the ceiling layer, the installation height space is limited, which causes great difficulties in the installation of the linear combined fireproof rolling shutter. Therefore, it is urgent to improve the installation scheme for this situation. Summary of the Utility Model

[0004] The embodiment of the utility model provides a flat-mounted reel installation structure for a combined fireproof rolling shutter and a linear combined fireproof rolling shutter, aiming to save the installation height space of the linear combined fireproof rolling shutter and reduce its installation difficulty.

[0005] To achieve the above object, the technical solution adopted by the utility model is: In the first aspect, a flat-mounted reel installation structure for a combined fireproof rolling shutter is provided, which includes a plurality of first rolling shutters and second rolling shutters that are alternately distributed in sequence along a straight line; the first rolling shutter includes two first reels, and two first fireproof curtain fabrics that are respectively wound around the two first reels; the second rolling shutter includes two second reels, and two second fireproof curtain fabrics that are respectively wound around the two second reels. The edges of the two second fireproof curtain fabrics respectively correspond to and are hermetically overlapped with the edges of the two adjacent first fireproof curtain fabrics; both ends of the two first reels are connected to the installation surface above the ceiling layer through first end plates, and both ends of the two second reels are connected to the installation surface through second end plates; wherein, a relief notch is provided at the bottom of the second end plate, the two second reels are respectively connected to both sides of the relief notch, and the two first reels are located between the two second reels and at least partially extend into the relief notch.

[0006] In combination with the first aspect, in a possible implementation, a first driving member is provided on one of the first end plates of each first rolling curtain, and the output end of the first driving member is connected to the two first reels and drives the two first reels to rotate in the same or opposite directions; a second driving member is provided on one of the second end plates of each second rolling curtain, and the output end of the second driving member is connected to the two second reels and drives the two second reels to rotate in the same or opposite directions.

[0007] In some embodiments, the first driving member includes:

[0008] A first rolling door machine, fixedly connected to the first end plate and having a first driving sprocket sleeved on the output end;

[0009] Two first synchronous sprockets, respectively sleeved on the same ends of the two first reels, and the two first synchronous sprockets and the first driving sprocket are horizontally spaced apart;

[0010] A first transmission chain, meshed and connected to the two first synchronous sprockets and the first driving sprocket respectively, for driving the two first synchronous sprockets to rotate in the same or opposite directions under the drive of the first driving sprocket.

[0011] Exemplarily, a first guide wheel is rotatably connected to the first end plate, the first driving sprocket and the two first synchronous sprockets are all in contact with the inner chain surface of the first transmission chain, and the first guide wheel is used for rolling the outer chain surface of the first transmission chain; or, the first driving sprocket, the first guide wheel and one of the first synchronous sprockets are all in contact with the inner chain surface of the first transmission chain, and the other first synchronous sprocket is in contact with the outer chain surface of the first transmission chain.

[0012] For example, the second driving member includes:

[0013] A second rolling door machine, fixedly connected to the second end plate and located on one side of the avoidance notch, and a second driving sprocket is sleeved on the output end of the second rolling door machine;

[0014] Two second synchronous sprockets, respectively sleeved on the same ends of the two second reels, and the two second synchronous sprockets are respectively located on both sides of the avoidance notch;

[0015] A second transmission chain, meshed and connected to the two second synchronous sprockets and the second driving sprocket respectively, for driving the two second synchronous sprockets to rotate in the same or opposite directions under the drive of the second driving sprocket.

[0016] In a possible implementation, at least two second guide wheels and at least two third guide wheels are spaced apart above the avoidance notch on the second end plate, each third guide wheel is located above the second guide wheel, and each second guide wheel and each third guide wheel are used for upwardly supporting the second transmission chain.

[0017] In some embodiments, the first rolling curtain includes two first anti-falling members, and the two first anti-falling members are used to brake two first synchronous sprockets respectively when the first transmission chain is disconnected; the second rolling curtain includes two second anti-falling members, and the two second anti-falling members are used to brake two second synchronous sprockets respectively when the second transmission chain is disconnected.

[0018] Exemplarily, the structures of the first anti-falling member and the second anti-falling member are the same; wherein, the middle part of the first anti-falling member is rotatably connected to the first end plate and a torsion spring is provided on the rotating shaft. One end of the first anti-falling member forms a ratchet pawl, and a roller is rotatably connected to the other end. The roller is used to roll the first transmission chain to separate the ratchet pawl from the first synchronous sprocket. When the first transmission chain is disconnected, the first anti-falling member swings under the elastic force of the torsion spring to make the ratchet pawl snap into the tooth groove of the first synchronous sprocket.

[0019] For example, the first rolling curtain includes two first supporting shafts, and the two ends of the first supporting shaft are respectively rotatably connected to the two first end plates, and the two first supporting shafts respectively roll two first fireproof curtain cloths; the second rolling curtain includes two second supporting shafts, and the two ends of the second supporting shaft are respectively rotatably connected to the two second end plates, and the two second supporting shafts respectively roll two second fireproof curtain cloths.

[0020] The beneficial effect of the flat-mounted scroll installation structure of the combined fireproof rolling curtain provided by the utility model is that: compared with the prior art, in the flat-mounted scroll installation structure of the combined fireproof rolling curtain of the utility model, the first fireproof curtain cloth of the first rolling curtain and the second fireproof curtain cloth of the second rolling curtain are correspondingly overlapped to ensure the fire integrity and smoke-proof sealing performance between the first rolling curtain and the second rolling curtain; when installing, the crossing position of the first rolling curtain and the second rolling curtain can utilize the avoidance notch at the bottom of the second end plate to form a state where the second end plate straddles above the two first scrolls, thereby enabling the two first scrolls and the two second scrolls to form a flat-mounted installation state close to the same horizontal plane, thus saving the installation height space, and further meeting the requirement of installing a straight combined fireproof rolling curtain when there are pipelines and bridge structures above the ceiling layer, and reducing the installation difficulty of the straight combined fireproof rolling curtain.

[0021] In a second aspect, the embodiment of the utility model further provides a straight combined fireproof rolling curtain, including the above-mentioned flat-mounted scroll installation structure of the combined fireproof rolling curtain.

[0022] The beneficial effects of the linear combined fireproof rolling shutter provided by the present utility model are as follows: Compared with the prior art, the linear combined fireproof rolling shutter of the present utility model adopts the above-mentioned flat-mounted reel installation structure of the combined fireproof rolling shutter. The crossing position of the first rolling shutter and the second rolling shutter can utilize the avoidance notch at the bottom of the second end plate to form a state where the second end plate straddles above the two first reels. Thus, the two first reels and the two second reels form a flat-mounted state close to the same horizontal plane, thereby saving the installation height space, further meeting the requirement for installing the linear combined fireproof rolling shutter when there are pipelines and bridge structures above the ceiling layer, and reducing the installation difficulty of the linear combined fireproof rolling shutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a top view structural schematic diagram of the flat-mounted reel installation structure of the combined fireproof rolling shutter provided by an embodiment of the present utility model;

[0024] Figure 2 is a schematic diagram of the lap joint of the first fireproof curtain cloth and the second fireproof curtain cloth in an embodiment of the present utility model;

[0025] Figure 3 is a sectional structural schematic diagram of the first rolling shutter and the second rolling shutter at the lap joint crossing position in an embodiment of the present utility model;

[0026] Figure 4 is a sectional structural schematic diagram of the first rolling shutter and the second rolling shutter at the lap joint crossing position in another embodiment of the present utility model;

[0027] Figure 5 is a schematic diagram of the installation structure of the first driving member on the first end plate adopted in an embodiment of the present utility model;

[0028] Figure 6 is a schematic diagram of the installation structure of the first driving member on the first end plate adopted in another embodiment of the present utility model;

[0029] Figure 7 is Figure 6 a partial enlarged structural schematic diagram at A in

[0030] Figure 8 is a schematic diagram of the winding directions of the first fireproof curtain cloth on the first reel and the second fireproof curtain cloth on the second reel in an embodiment of the present utility model.

[0031] In the figure: 10, the first rolling curtain; 11, the first rolling shaft; 111, the first fireproof curtain fabric; 12, the first end plate; 13, the first driving member; 131, the first rolling door machine; 1311, the first driving sprocket; 132, the first synchronous sprocket; 133, the first transmission chain; 14, the first guide wheel; 15, the first anti-falling member; 151, the pawl; 152, the roller; 16, the first supporting shaft; 20, the second rolling curtain; 21, the second rolling shaft; 211, the second fireproof curtain fabric; 22, the second end plate; 221, the avoidance notch; 23, the second driving member; 231, the second rolling door machine; 2311, the second driving sprocket; 232, the second synchronous sprocket; 233, the second transmission chain; 24, the second guide wheel; 25, the third guide wheel; 26, the second anti-falling member; 27, the second supporting shaft; 30, the suspended ceiling layer. Detailed implementation manners

[0032] 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.

[0033] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 thus cannot be understood as a limitation to the present application. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present application, the meaning of "a plurality" and "several" is two or more, unless otherwise specifically defined.

[0034] Please refer to Figures 1 to 8, a description is now given to the flat-mounted scroll installation structure of the combined fireproof rolling shutter provided by the present utility model. The flat-mounted scroll installation structure of the combined fireproof rolling shutter includes a plurality of first rolling shutters 10 and second rolling shutters 20 that are alternately distributed in sequence along a straight line; the first rolling shutter 10 includes two first scrolls 11, and two first fireproof curtain cloths 111 respectively wound around the two first scrolls 11; the second rolling shutter 20 includes two second scrolls 21, and two second fireproof curtain cloths 211 respectively wound around the two second scrolls 21, and the edges of the two second fireproof curtain cloths 211 respectively correspond to and are hermetically lapped with the edges of the two adjacent first fireproof curtain cloths 111; both ends of the two first scrolls 11 are connected to the installation surface above the suspended ceiling layer 30 through first end plates 12, and both ends of the two second scrolls 21 are connected to the installation surface through second end plates 22; wherein, a relief notch 221 is provided at the bottom of the second end plate 22, the two second scrolls 21 are respectively connected to both sides of the relief notch 221, and the two first scrolls 11 are located between the two second scrolls 21 and at least partially extend into the relief notch 221.

[0035] It should be noted that in this embodiment, guide rails are respectively provided on both sides of the fireproof opening, and the edges of the first fireproof curtain cloth 111 or the second fireproof curtain cloth 211 close to the guide rails extend into the guide rails and are vertically lifted and closed under the restraint of the guide rails. Therefore, the above-mentioned first rolling shutter 10 and second rolling shutter 20 are both vertical rolling shutters.

[0036] Due to the lap seal between the first fireproof curtain cloth 111 and the second fireproof curtain cloth 211 in the above-mentioned first rolling shutter 10 and second rolling shutter 20, there is an axial intersection between the first scroll 11 and the second scroll 21 in the axial direction. Here, in order to save the installation height space, a relief notch 221 is opened at the bottom of the second end plate 22, and at the same time, the two first scrolls 11 are respectively rotatably connected to the positions of the second end plate 22 on both sides of the relief notch 221, and the relief notch 221 straddles above the two first scrolls 11 to form a state where the first scroll 11 wholly or partially extends into the relief notch 221. Of course, since the first scroll 11 is located inside the relief notch 221 and the second scroll 21 is located outside the relief notch 221, the two second scrolls 21 are actually located outside the two first scrolls 11. In this way, the first scroll 11 and the second scroll 21 can form a flat-mounted intersection state, thereby saving the installation height space.

[0037] Compared with the prior art, the combined fireproof rolling shutter flat-mounted reel installation structure provided in this embodiment ensures the fire integrity and smoke-proof sealing performance between the first rolling shutter 10 and the second rolling shutter 20 by the corresponding overlapping of the first fireproof curtain cloth 111 of the first rolling shutter 10 and the second fireproof curtain cloth 211 of the second rolling shutter 20. During installation, the second end plate 22 can span over the two first reels 11 by using the avoidance notch 221 at the bottom of the second end plate 22 at the intersection position of the first rolling shutter 10 and the second rolling shutter 20, so that the two first reels 11 and the two second reels 21 form a flat-mounted state close to the same horizontal plane, thus saving the installation height space, and further meeting the installation requirements of the straight-line combined fireproof rolling shutter when there are pipelines and bridge structures above the suspended ceiling layer 30, and reducing the installation difficulty of the straight-line combined fireproof rolling shutter.

[0038] In some embodiments, referring to Figures 1 to 6 , a first driving member 13 is provided on one of the first end plates 12 of each first rolling shutter 10. The output end of the first driving member 13 is connected to the two first reels 11 and drives the two first reels 11 to rotate in the same or opposite directions. A second driving member 23 is provided on one of the second end plates 22 of each second rolling shutter 20. The output end of the second driving member 23 is connected to the two second reels 21 and drives the two second reels 21 to rotate in the same or opposite directions.

[0039] Here, both the first driving member 13 and the second driving member 23 are a rolling door machine for fireproof rolling shutters and a transmission mechanism supporting the rolling door that meet the GB14102 supporting standard. During specific installation, if the first driving member 13 is provided on the first end plate 12 at the intersection position of the first rolling shutter 10 and the second rolling shutter 20, then the second driving member 23 is provided on the second end plate 22 away from the first driving member 13, so as to avoid increasing the installation difficulty by simultaneously providing the first driving member 13 and the second driving member 23 at the intersection position of the first rolling shutter 10 and the second rolling shutter 20.

[0040] On this basis, in order to ensure the synchronous lifting and lowering of the two first fireproof curtain cloths 111, if the first driving member 13 drives the two first reels 11 to rotate in the same direction, the winding directions of the two first fireproof curtain cloths 111 should be the same; if the first driving member 13 drives the two first reels 11 to rotate in the opposite direction, the winding directions of the two first fireproof curtain cloths 111 should be opposite. Similarly, the principle of synchronous lifting and lowering of the two second fireproof rolling shutters is the same as that of the first fireproof rolling shutter, that is, if the two second reels 21 rotate in the same direction, the winding directions of the two second fireproof curtain cloths 211 are the same; if the two second reels 21 rotate in the opposite direction, the winding directions of the two second fireproof curtain cloths 211 are opposite.

[0041] As an optional structure of the first driving member 13, please refer to Figure 5 and Figure 6, the first driving member 13 includes a first rolling door machine 131, two first synchronous sprockets 132 and a first transmission chain 133; wherein, the first rolling door machine 131 is fixedly connected to the first end plate 12 and a first driving sprocket 1311 is sleeved on the output end; the two first synchronous sprockets 132 are respectively sleeved on the same end of the two first rolling shafts 11, and the two first synchronous sprockets 132 and the first driving sprocket 1311 are horizontally spaced apart; the first transmission chain 133 is respectively meshed with the two first synchronous sprockets 132 and the first driving sprocket 1311, and is used to make the two first synchronous sprockets 132 rotate in the same or opposite directions under the drive of the first driving sprocket 1311.

[0042] The way of horizontally spacing the first driving sprocket 1311 and the two first synchronous sprockets 132 can flatten the overall structure of the first driving member 13, thereby reducing the occupation of height space. On this basis, if both of the two first synchronous sprockets 132 cooperate with the inner chain surface of the first transmission chain 133 (that is, the inner ring surface of the first transmission chain 133 enclosed in a ring), or in other words, both of the two first synchronous sprockets 132 are located within the transmission path enclosed by the first transmission chain 133 to form an internal meshing, then the first driving sprocket 1311 drives the two first synchronous sprockets 132 to rotate in the same direction through the first transmission chain 133; if the first transmission chain 133 is in internal meshing with one of the first synchronous sprockets 132 and in external meshing with the other first synchronous sprocket 132, then the two first synchronous sprockets 132 rotate in opposite directions under the drive of the first driving sprocket 1311.

[0043] It should be noted that as Figure 5 shown, a first guide wheel 14 is rotatably connected to the first end plate 12. The first driving sprocket 1311 and the two first synchronous sprockets 132 both cooperate with the inner chain surface of the first transmission chain 133, and the first guide wheel 14 is used to roll the outer chain surface of the first transmission chain 133. Thereby, it can make both of the two first synchronous sprockets 132 form an internal meshing with the first transmission chain 133 to realize their co-rotation. On this basis, by arranging the first guide wheel 14 between the two first synchronous sprockets 132 to roll the outer chain surface of the first transmission chain 133, the wrap angle of the first transmission chain 133 on the two first synchronous sprockets 132 can be increased, thereby improving the transmission stability.

[0044] Another transmission method can also be adopted for the first transmission chain 133, such as Figure 4As shown, the first driving sprocket 1311, the first guiding wheel 14, and one of the first synchronous sprockets 132 are all in contact with the inner chain surface of the first transmission chain 133, and the other first synchronous sprocket 132 is in contact with the outer chain surface of the first transmission chain 133. Thus, the first synchronous sprocket 132 close to the first driving sprocket 1311 forms an external engagement with the first transmission chain 133, and the other first synchronous sprocket 132 forms an internal engagement with the first transmission chain 133, thereby achieving reverse rotation of the two first synchronous sprockets 132. Of course, in order to prevent the first transmission chain 133 from self-interfering in its transmission path, the above-mentioned first guiding wheel 14 is arranged above the first synchronous sprocket 132 close to the first driving sprocket 1311 to support the first transmission chain 133, so as to ensure transmission stability.

[0045] As an alternative structure of the second driving member 23, please refer to Figure 3 and Figure 4 , the second driving member 23 includes a second rolling door machine 231, two second synchronous sprockets 232, and a second transmission chain 233; wherein, the second rolling door machine 231 is fixedly connected to the second end plate 22 and is located on one side of the avoidance notch 221, and a second driving sprocket 2311 is sleeved on the output end of the second rolling door machine 231; the two second synchronous sprockets 232 are respectively sleeved on the same ends of the two second scrolls 21, and the two second synchronous sprockets 232 are respectively located on both sides of the avoidance notch 221; the second transmission chain 233 is respectively meshed with the two second synchronous sprockets 232 and the second driving sprocket 2311, and is used to make the two second synchronous sprockets 232 rotate in the same or opposite directions under the drive of the second driving sprocket 2311.

[0046] The second rolling door machine 231 and one of the second synchronous sprockets 232 are located on the same side of the avoidance notch 221, and the other second synchronous sprocket 232 is located on the other side of the avoidance notch 221, so that the second driving sprocket 2311 and the two second synchronous sprockets 232 form a flat installation state close to the same plane, thereby saving installation height space; on this basis, if both of the two second synchronous sprockets 232 and the second transmission chain 233 are in internal engagement, they rotate in the same direction, and if one of the second synchronous sprockets 232 is in internal engagement with the second transmission chain 233 and the other second synchronous sprocket 232 is in external engagement with the second transmission chain 233, the two second synchronous sprockets 232 rotate in opposite directions.

[0047] It should be noted that, as Figure 3 and Figure 4 shown, at least two second guiding wheels 24 and at least two third guiding wheels 25 are spaced apart above the avoidance notch 221 of the second end plate 22, each of the third guiding wheels 25 is located above the second guiding wheel 24, and each of the second guiding wheels 24 and each of the third guiding wheels 25 are used to support the second transmission chain 233 upward.

[0048] On this basis, the transmission path of the second transmission chain 233 can be as follows Figure 3 As shown, connect the second roller door machine 231 to the lower side of the second synchronous sprocket 232 on the same side as the avoidance notch 221, so that the second driving sprocket 2311 sleeved on its output end is offset downward relative to the center of the second synchronous sprocket 232. The second transmission chain 233 is sleeved on the second driving sprocket 2311 to form an internal engagement, and then bypasses the upper rim of the second synchronous sprocket 232 close to the second driving sprocket 2311 to form an external engagement, and then extends above each second guide wheel 24 to another second synchronous sprocket 232 to form an internal engagement, and after bypassing the second synchronous sprocket 232 with internal engagement, it returns to the second driving sprocket 2311 above the two third guide wheels 25 to form a closed-loop transmission path, thereby realizing the reverse rotation of the two second synchronous sprockets 232 driven by the second driving sprocket 2311; wherein, the support of each second guide wheel 24 for the second transmission chain 233 can prevent the second transmission chain 233 from rubbing and interfering with the first reel 11, and the support of each third guide wheel 25 for the second transmission chain 233 can prevent the second transmission chain 233 from self-interfering in its transmission path, thereby improving the transmission stability.

[0049] The transmission path of the above-mentioned second transmission chain 233 can also be as follows Figure 4 As shown, connect the second roller door machine 231 to the upper side of the second synchronous sprocket 232 on the same side as the avoidance notch 221, so that the second driving sprocket 2311 sleeved on its output end is offset upward relative to the center of the second synchronous sprocket 232. The second transmission chain 233 is sleeved on the second driving sprocket 2311 to form an internal engagement, and at the same time is sleeved on the two second synchronous sprockets 232 to form an internal engagement to realize the same-direction rotation of the two second synchronous sprockets 232; wherein, the second transmission chain 233 forms upper and lower sections between the two second synchronous sprockets 232. The lower section is supported by each second guide wheel 24 to avoid interfering with and rubbing the first reel 11, and the upper section is supported by each third guide wheel 25 to avoid mutual rubbing and interference between the upper and lower sections, thereby ensuring the transmission stability.

[0050] It should be noted that the winding directions of the first fireproof curtain cloth 111 and the second fireproof curtain cloth 211 can be formed in various ways as shown in Figure 3 ; as long as it is ensured that the two first synchronous sprockets 132 rotate in the same direction, the two first fireproof curtain cloths 111 will wind in the same direction, and if the two first synchronous sprockets 132 rotate in the opposite direction, the two first fireproof curtain cloths 111 will wind in the opposite direction. Similarly, if the two second synchronous sprockets 232 rotate in the same direction, the two second fireproof curtain cloths 211 will wind in the same direction, and if the two second synchronous sprockets 232 rotate in the opposite direction, the two second fireproof curtain cloths 211 will wind in the opposite direction.

[0051] In some possible implementation manners, refer to Figure 4 , Figure 6 and Figure 7 , the first rolling curtain 10 includes two first anti-falling members 15, and the two first anti-falling members 15 are used to brake the two first synchronous sprockets 132 respectively when the first transmission chain 133 is disconnected; the second rolling curtain 20 includes two second anti-falling members 26, and the two second anti-falling members 26 are used to brake the two second synchronous sprockets 232 respectively when the second transmission chain 233 is disconnected. By providing the first anti-falling member 15 and the second anti-falling member 26, it is possible to prevent the first rolling curtain 111 and the second rolling curtain 211 from automatically unrolling and falling when the first transmission chain 133 and the second transmission chain 233 break down.

[0052] Specifically, as Figure 7 shown, in this embodiment, the structures of the first anti-falling member 15 and the second anti-falling member 26 are the same; among them, the middle of the first anti-falling member 15 is rotatably connected to the first end plate 12 and a torsion spring is provided on the rotating shaft. One end of the first anti-falling member 15 forms a pawl 151, and the other end is rotatably connected with a roller 152. The roller 152 is used to roll on the first transmission chain 133 so that the pawl 151 is separated from the first synchronous sprocket 132. When the first transmission chain 133 is disconnected, the first anti-falling member 15 swings under the elastic force of the torsion spring so that the pawl 151 is engaged with the tooth groove of the first synchronous sprocket 132.

[0053] Under normal circumstances, the first transmission chain 133 is in a tensioned state and can form a pressing force on the roller 152, so that the roller 152 always rolls on the first transmission chain 133, and further the first anti-falling member 15 is stably maintained in a state where the pawl 151 is separated from the first synchronous sprocket 132. When the first transmission chain 133 is disconnected, the pressing force on the roller 152 is lost. At this time, the first anti-falling member 15 swings under the elastic force of the torsion spring, so that the pawl 151 is engaged with the tooth groove of the first synchronous sprocket 132 to lock the first synchronous sprocket 132, and further form a rotational brake on the first reel 11, avoiding the first fireproof curtain cloth 111 from freely unrolling and falling under the action of gravity and causing potential safety hazards.

[0054] Since the second anti-falling member 26 has the same structure as the first anti-falling member 15, the second anti-falling member 26 rolls on the second transmission chain 233 through its roller 152 and is under the elastic force of the torsion spring when the second transmission chain 233 is disconnected, so that its pawl 151 is engaged with the tooth groove of the second synchronous sprocket 232, thereby avoiding the second fireproof curtain cloth 211 from freely unrolling and falling and causing potential safety hazards.

[0055] In some embodiments, please refer to Figure 3 and Figure 4, the first rolling curtain 10 includes two first supporting shafts 16. The two ends of the first supporting shaft 16 are respectively rotatably connected to two first end plates 12, and the two first supporting shafts 16 respectively roll two first fireproof curtain fabrics 111; the second rolling curtain 20 includes two second supporting shafts 27. The two ends of the second supporting shaft 27 are respectively rotatably connected to two second end plates 22, and the two second supporting shafts 27 respectively roll two second fireproof curtain fabrics 211.

[0056] On the one hand, due to the different distances between the two first scroll shafts 11 and the two second scroll shafts 21, and on the other hand, since the lifting height changes of the first fireproof curtain fabric 111 and the second fireproof curtain fabric 211 are directly related to the changes in the winding radii of the two on the first scroll shaft 11 and the second scroll shaft 21, and the first fireproof curtain fabric 111 needs to be closely overlapped with the second fireproof curtain fabric 211 to ensure the sealing performance. Therefore, by providing two first supporting shafts 16 and two second supporting shafts 27 to respectively block and restrain the first fireproof curtain fabric 111 and the second fireproof curtain fabric 211, the distances between the two first fireproof curtain fabrics 111 after being unfolded downward and the distances between the two second fireproof curtain fabrics 211 after being unfolded downward can be kept stable, thereby improving the overall fireproof performance and the sealing and smoke prevention performance between the adjacent first rolling curtain 10 and the second rolling curtain 20.

[0057] It should be noted that considering that there is a certain axial intersection between the adjacent first rolling curtain 10 and the second rolling curtain 20, in order to avoid interference between the above-mentioned first supporting shaft 16 and the second supporting shaft 27 at the intersection position, the first supporting shaft 16 and the second supporting shaft 27 can be distributed in a vertically staggered manner, or, one of the first supporting shaft 16 and the second supporting shaft 27 can be truncated in size so that the two form a butting and non-interfering manner, or, the first supporting shaft 16 and the second supporting shaft 27 can be directly replaced by an integral through shaft.

[0058] Based on the same inventive concept, combined with Figures 1 to 8 understanding, the embodiment of the present application further provides a linear combined fireproof rolling curtain, including the above-mentioned flat-mounted scroll shaft installation structure of the combined fireproof rolling curtain.

[0059] Compared with the prior art, the linear combined fireproof rolling curtain provided by this embodiment adopts the above-mentioned flat-mounted scroll shaft installation structure of the combined fireproof rolling curtain. The intersection position of the first rolling curtain 10 and the second rolling curtain 20 can utilize the avoidance notch 221 at the bottom of the second end plate 22 to form a state where the second end plate 22 straddles above the two first scroll shafts 11. Thus, the two first scroll shafts 11 and the two second scroll shafts 21 form a flat-mounted installation state close to the same horizontal plane, thereby saving the installation height space, and further meeting the installation requirements of the linear combined fireproof rolling curtain when there are pipelines and bridge structures above the ceiling layer 30, and reducing the installation difficulty of the linear combined fireproof rolling curtain.

[0060] 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, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Combined fireproof rolling shutter horizontal scroll installation structure, characterized in that, It includes a number of first rolling shutters and second rolling shutters that are alternately distributed in sequence along a straight line; each first rolling shutter includes two first scroll shafts, and two first fireproof curtain fabrics respectively wound around the two first scroll shafts; each second rolling shutter includes two second scroll shafts, and two second fireproof curtain fabrics respectively wound around the two second scroll shafts, and the edges of the two second fireproof curtain fabrics respectively correspond to and are hermetically lapped with the edges of the two adjacent first fireproof curtain fabrics; both ends of the two first scroll shafts are connected to the installation surface above the ceiling layer through first end plates, and both ends of the two second scroll shafts are connected to the installation surface through second end plates; wherein, a relief notch is provided at the bottom of the second end plate, the two second scroll shafts are respectively connected to both sides of the relief notch, and the two first scroll shafts are located between the two second scroll shafts and at least partially extend into the relief notch.

2. The combined fireproof rolling shutter horizontal scroll installation structure according to claim 1, characterized in that, A first driving member is provided on one of the first end plates of each first rolling shutter, and the output end of the first driving member is connected to the two first scroll shafts and drives the two first scroll shafts to rotate in the same or opposite directions; a second driving member is provided on one of the second end plates of each second rolling shutter, and the output end of the second driving member is connected to the two second scroll shafts and drives the two second scroll shafts to rotate in the same or opposite directions.

3. The combined fireproof rolling shutter flat-mounted reel installation structure according to claim 2, characterized in that, The first driving member includes: A first rolling door machine fixedly connected to the first end plate and having a first driving sprocket sleeved on its output end; Two first synchronous sprockets respectively sleeved on the same ends of the two first scroll shafts, and the two first synchronous sprockets and the first driving sprocket are horizontally spaced apart; A first transmission chain respectively meshed with the two first synchronous sprockets and the first driving sprocket, for driving the two first synchronous sprockets to rotate in the same or opposite directions under the drive of the first driving sprocket.

4. The combined fireproof rolling shutter flat-mounted reel installation structure according to claim 3, characterized in that, A first guide wheel is rotatably connected to the first end plate, the first driving sprocket and the two first synchronous sprockets are all in contact with the inner chain surface of the first transmission chain, and the first guide wheel is used to roll the outer chain surface of the first transmission chain; or, the first driving sprocket, the first guide wheel and one of the first synchronous sprockets are all in contact with the inner chain surface of the first transmission chain, and the other first synchronous sprocket is in contact with the outer chain surface of the first transmission chain.

5. The combined fireproof rolling shutter flat-mounted reel installation structure according to claim 3, characterized in that, The second driving member includes: A second rolling door machine fixedly connected to the second end plate and located on one side of the relief notch, and a second driving sprocket is sleeved on the output end of the second rolling door machine; Two second synchronous sprockets respectively sleeved on the same ends of the two second scroll shafts, and the two second synchronous sprockets are respectively located on both sides of the relief notch; A second transmission chain respectively meshed with the two second synchronous sprockets and the second driving sprocket, for driving the two second synchronous sprockets to rotate in the same or opposite directions under the drive of the second driving sprocket.

6. The combined fireproof rolling shutter flat-mounted reel installation structure according to claim 5, characterized in that, At least two second guide wheels and at least two third guide wheels are spaced apart above the avoidance notch on the second end plate. Each of the third guide wheels is located above the second guide wheel, and each of the second guide wheels and each of the third guide wheels are used to upwardly support the second transmission chain.

7. The combined fireproof rolling shutter flat-mounted reel installation structure according to claim 5, characterized in that, The first rolling curtain includes two first anti-falling members, and the two first anti-falling members are used to respectively brake the two first synchronous sprockets when the first transmission chain is disconnected; the second rolling curtain includes two second anti-falling members, and the two second anti-falling members are used to respectively brake the two second synchronous sprockets when the second transmission chain is disconnected.

8. The combined fireproof rolling shutter flat-mounted reel installation structure according to claim 7, characterized in that, The structures of the first anti-falling member and the second anti-falling member are the same; wherein, the middle part of the first anti-falling member is rotatably connected to the first end plate and a torsion spring is provided on the rotating shaft. One end of the first anti-falling member forms a pawl, and a roller is rotatably connected to the other end. The roller is used to roll the first transmission chain so that the pawl is separated from the first synchronous sprocket. When the first transmission chain is disconnected, the first anti-falling member swings under the elastic force of the torsion spring so that the pawl is engaged with the tooth groove of the first synchronous sprocket.

9. The combined fireproof rolling shutter flat-mounted reel installation structure according to any one of claims 1-8, characterized in that, The first rolling curtain includes two first supporting shafts, and the two ends of the first supporting shaft are respectively rotatably connected to the two first end plates. The two first supporting shafts respectively roll two first fireproof curtain fabrics; the second rolling curtain includes two second supporting shafts, and the two ends of the second supporting shaft are respectively rotatably connected to the two second end plates. The two second supporting shafts respectively roll two second fireproof curtain fabrics.

10. The straight-line combined fire shutter is characterized in that, It includes the combined fireproof rolling curtain flat-mounted reel installation structure according to any one of claims 1-9.

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