Automatic leveling type heat insulation fireproof roller shutter

Abstract

The invention discloses an automatic leveling type heat insulation fireproof roller shutter, and relates to the technical field of building fire fighting equipment, the automatic leveling type heat insulation fireproof roller shutter comprises a roller shutter machine, two motor plates, a fireproof box, a reel, a shutter surface and a guide rail, the two motor plates are embedded and fixed in a door opening, and the reel is rotatably connected to the motor plates through bearings; the curtain rolling machine is fixedly installed on the motor plate and used for driving the two rolling shafts to rotate synchronously, the supporting assembly is arranged between the two curtain faces, when local air pressure generated by a fire disaster is too large, an auxiliary supporting plate supported between the two curtain faces is used for supporting a gap between the curtain faces, and the supporting assembly is arranged between the two curtain faces; the limiting balls are arranged on the steel cables, the grooves for containing the limiting balls are formed in the containing grooves of the rolling shaft, when the curtain face is rolled, the limiting balls can be stably embedded into the grooves in the upward moving process of the steel cables, the stability of the auxiliary supporting plates in each time of containing is guaranteed, the curtain face is automatically leveled for a long time, and the phenomenon that the left height and the right height of the curtain face are different is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of building fire-fighting equipment, and particularly to an automatically leveling heat-insulating and fire-proof rolling shutter. Background Technique

[0002] A fire-proof rolling shutter door is a rolling shutter that can meet the requirements of fire resistance stability and integrity together with the frame within a certain period of time, and is composed of a curtain board, a reel, a motor, guide rails, brackets, a protective cover, a control mechanism, etc.

[0003] For the existing double-track and double-curtain inorganic composite super-class fire-proof rolling shutter door, the wind resistance and bending resistance of the curtain surface are poor. Under the positive pressure and negative pressure conditions generated by the fire, the curtain surface lacks sufficient support structure, and during the lifting and lowering process of the curtain surface, due to the occasional inclination at both ends of the curtain surface, after multiple liftings and lowerings, there will be a situation where the bottom of the curtain surface is not tightly closed with the door opening. When the height difference of the curtain surface exceeds 5 cm, a "flame tongue passage" will be formed between the top and the building structure. Experimental data shows that a 1-cm-wide gap can eject a 2-m-long flame within 30 seconds under the high temperature of a fire (in accordance with the fire resistance test standard of GB / T 7633-2008). If the two curtain bodies are misaligned in height and the gaps are distributed in a zigzag shape, the actual fire leakage area may be enlarged by 3 to 5 times.

[0004] As an important passive fire protection facility in the building fire protection system, the core function of the fire-proof curtain is to quickly descend to the set height during a fire, form a fire resistance barrier through physical isolation, and prevent the spread of fire and high-temperature smoke. However, during long-term use, frequent opening and closing operations may cause wear of mechanical components, deformation of the curtain body, or malfunction of the control system, which may lead to the problem of inconsistent curtain surface height. This seemingly minor potential fault may actually cause systemic fire protection failure and even catastrophic consequences. In view of this, the present application proposes an automatically leveling heat-insulating and fire-proof rolling shutter. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatically leveling heat-insulating and fire-proof rolling shutter to solve the problem that the bottom of the curtain surface is not tightly closed with the door opening after multiple liftings and lowerings of the curtain surface as proposed in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An automatically leveling heat-insulating and fire-proof rolling shutter, including a rolling shutter machine, a motor board, a fire-proof box, a reel, a curtain surface, and guide rails. Two of the motor boards are embedded and fixed in the door opening. The reel is rotatably connected to the motor board through bearings. The rolling shutter machine is fixedly installed on the motor board to drive the two reels to rotate synchronously. The two curtain surfaces are respectively wound around the two reels. The guide rails are arranged on both sides of the door opening;

[0007] A guiding assembly is arranged inside the guide rails and is used for assisting in guiding the curtain surface during winding;

[0008] A supporting assembly is arranged between two curtain surfaces and is used for supporting the lowered curtain surface.

[0009] Preferably, a counterweight bar is fixedly connected to the lower end of the curtain surface, and T-blocks are provided on both sides of the curtain surface, and auxiliary wheels are provided at both ends of the T-blocks.

[0010] The auxiliary wheel is arranged on the inner side of the guide rail and is connected to the guide rail in a rolling manner. It can assist the curtain surface in rising and falling and prevent the curtain surface from falling off the guide rail.

[0011] Preferably, the guide assembly includes a telescopic cylinder fixedly mounted on the inner side of the upper end of the guide rail, the inner wall of the telescopic cylinder is slidably connected with a telescopic rod, the end of the telescopic rod is rotatably connected with a guide wheel, and a first spring is arranged between the telescopic rod and the telescopic cylinder.

[0012] By arranging a guide component in the guide rail, on the one hand, the stability of the curtain surface during lifting and lowering is ensured, and on the other hand, with the assistance of the first spring, the curtain surface is automatically adjusted so that the curtain surface always remains in the center position during the lifting and lowering process.

[0013] Preferably, the support assembly includes a winding shaft rotatably connected between two motor plates, and storage grooves with opposite thread directions are opened on the shaft body at both ends of the winding shaft, and a steel cable is wound around the storage groove, and the lower end of the steel cable is fixedly connected to the bottom support plate, and a plurality of auxiliary support plates are sleeved on the steel cable, and traction ropes are connected between the plurality of auxiliary support plates and between the bottom auxiliary support plate and the bottom support plate, and the upper end of the traction rope on the top auxiliary support plate is fixedly connected to the fireproof box, and a clamping assembly is provided on the auxiliary support plate.

[0014] The reel reels up the steel cable, which in turn drives the bottom support plate and the auxiliary support plate to move upward for storage. When descending, the auxiliary support plate is pulled open between the two curtain surfaces in turn by the traction of the bottom support plate.

[0015] Preferably, the clamping assembly includes a surface reset rod fixedly mounted on the auxiliary support plate, a reset block is sleeved on the reset rod, an arc-shaped limit plate is fixedly mounted on the end of the reset block, a second spring is sleeved between the tail end of the reset rod and the reset block, a through hole is opened on the auxiliary support plate for the steel cable to pass through, and the clamping assembly is symmetrically arranged on both sides of the through hole.

[0016] Preferably, a plurality of limiting balls are fixedly connected to the steel cable, the spacing between two adjacent limiting balls is the same as the spacing between two adjacent auxiliary support plates, and grooves for accommodating the limiting balls are equidistantly arranged on the storage slot of the winding shaft.

[0017] When the curtain surface descends and closes between the guide rails, the clamping components arranged on both sides of the passage hole can hold the upper limit ball of the steel cable.

[0018] Preferably, the support assembly also includes a threaded rod and a guide rod arranged between the two motor plates, wherein the threaded rod is rotatably connected to the motor plate, the guide rod is fixedly connected to the motor plate, a shift rod is slidably connected to the guide rod, and the shift rod is threadedly connected to the threaded rod, and the wire shifting end of the shift rod is a ring structure.

[0019] The threaded rod is used to drive the lever to slide on the guide rod, thereby ensuring that the steel cables can be stored in the storage groove in sequence when the steel cables are rolled up, avoiding the phenomenon that the lifting and lowering speeds of the bottom support plate and the curtain surface are inconsistent due to the stacking of the steel cables.

[0020] Preferably, the upper end of the guide rail is outwardly expanded with an outward expansion angle of 30°, and a graphite-based expansion strip is pre-embedded inside the guide rail.

[0021] The high temperature generated by the fire will cause the graphite-based expansion strips to rupture and release expanded graphite to fill the gap between the curtain surface and the guide rail.

[0022] Preferably, abutment plates are hinged on both sides of the auxiliary support plate, and abutment rods are rotatably connected to the inner sides of the abutment plates. A waist hole is provided on the surface of the auxiliary support plate for the push rods to pass through, and an adjusting nut is threadedly connected to the end of the push rods. A third spring is sleeved on the rod body of the push rods.

[0023] After the curtain surface is lowered, the bottom plate on the auxiliary support plate will press against the curtain surface under the action of the third spring, and the pressing angle can be adjusted by adjusting the nut.

[0024] Preferably, the curtain surface is composed of a stainless steel corrugated plate, a ceramic fiber felt, an aerogel insulation layer, and an aluminum silicate refractory cloth from the outside to the inside, and the four layers are fixed by rivets and elastic buckles to ensure that they do not separate at high temperatures.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention arranges a support assembly between two curtain surfaces. When the local air pressure generated by a fire is too large, the gap between the curtain surfaces is supported by an auxiliary support plate supported between the two curtain surfaces. When the auxiliary support plate is opened, the abutment plate arranged on the surface of the auxiliary support plate will press against the curtain surface under the action of the third spring, thereby increasing its pressure resistance.

[0027] The present invention provides a clamping assembly on the auxiliary support plate, and uses a pair of arc-shaped limit plates to hold the limit balls on the steel cable tightly, thereby increasing the stability of the auxiliary support plate during support.

[0028] In the present invention, a limit ball is provided on the steel cable, and a groove for receiving the limit ball is provided in the receiving groove of the winding shaft. When the curtain surface is wound up, the limit ball can stably embed into the groove during the upward movement of the steel cable, ensuring the stability of the auxiliary support plate each time it is received, automatically leveling the curtain surface over time, and avoiding the phenomenon of uneven left and right heights of the curtain surface;

[0029] In the present invention, a guiding component is provided in the guide rail. On the one hand, it ensures the stability of the curtain surface during lifting and lowering. On the other hand, with the assistance of the first spring, it automatically adjusts the curtain surface so that the curtain surface always remains in the centered position during the lifting and lowering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an overall structural view of an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention;

[0031] Figure 2 is a schematic assembly structure diagram of the winding shaft and the threaded rod of an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention;

[0032] Figure 3 is a three-dimensional structural schematic diagram of the auxiliary support plate of an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention Figure 1 ;

[0033] Figure 4 is a three-dimensional structural schematic diagram of the auxiliary support plate of an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention Figure 2 ;

[0034] Figure 5 is a schematic connection structure diagram of the curtain surface and the guide rail of an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention;

[0035] Figure 6 is a schematic partial structure diagram of the guide rail of an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention;

[0036] Figure 7 is an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention Figure 2 The enlarged structure diagram of A in;

[0037] Figure 8 is an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention Figure 3 The enlarged view of B;

[0038] Figure 9 is an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention Figure 3 The enlarged view of C;

[0039] Figure 10 is a schematic sectional structure diagram of the guiding component of an automatically leveling heat-insulating and fire-proof rolling curtain according to the present invention.

[0040] In the figure:

[0041] 1. Roller blind machine; 2. Motor board; 3. Fireproof box; 4. Reel; 5. Blind surface; 6. Guide rail; 7. Guide assembly; 701. Telescopic cylinder; 702. Telescopic rod; 703. Guide wheel; 704. First spring; 8. Support assembly; 801. Take-up reel; 802. Storage groove; 803. Steel cable; 804. Bottom support plate; 805. Auxiliary support plate; 806. Towing cable; 807. Through hole; 808. Limit ball; 809. Groove; 810. Threaded rod; 811. Guide rod; 812. Poking rod; 9. Counterweight bar; 10. T-shaped block; 11. Auxiliary wheel; 12. Clamping assembly; 1201. Reset rod; 1202. Reset block; 1203. Arc-shaped limiting plate; 1204. Second spring; 13. Graphite-based expansion strip; 14. Baffle plate; 15. Baffle rod; 16. Adjusting nut; 17. Third spring; 18. Kidney-shaped hole. Detailed implementation manner

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0043] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means that the related objects before and after are in an "or" relationship.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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 invention 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 to the present invention.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Please refer to Figures 1 to 10 , the present invention provides a technical solution: an automatic leveling heat-insulating and fire-proof rolling curtain, which includes a rolling curtain machine 1, a motor plate 2, a fire-proof box 3, a reel 4, a curtain surface 5 and a guide rail 6. Two motor plates 2 are embedded and fixed in the door opening. The reel 4 is rotationally connected to the motor plate 2 through bearings. The rolling curtain machine 1 is fixedly installed on the motor plate 2 to drive the two reels 4 to rotate synchronously. Two curtain surfaces 5 are respectively wound around the two reels 4. The guide rails 6 are arranged on both sides of the door opening. A counterweight strip 9 is fixedly connected to the lower end of the curtain surface 5, and T-shaped blocks 10 are arranged on both sides of the curtain surface 5. Auxiliary wheels 11 are arranged at both ends of the T-shaped blocks 10. By using the counterweight strip 9, when the curtain surface 5 is lowered, it descends by its own gravity. The arrangement of the auxiliary wheels 11 can ensure that the curtain surface 5 always remains in the centered position during the rising and falling processes, avoiding the situation where the heights of both sides of the curtain surface 5 are different, and achieving the purpose of automatic leveling.

[0047] It should be noted that the rolling curtain machine 1 includes a motor, a reduction gearbox, a braking mechanism, a temperature-controlled release device, a limit switch and a manual operation component, etc. Among them, the function of the reduction gearbox is to limit the lowering speed of the motor reel, so that it descends at a uniform speed when the rolling curtain is lowered. The function of the limit switch is to limit the rising and falling heights of the rolling curtain to prevent excessive rising or falling. The limit switch moves with the sprocket. When the upper limit and the lower limit are reached, it sends a stop command to the controller. The braking mechanism includes an electromagnetic brake and a brake disc. When not started, the electromagnetic brake tightly presses the brake disc and is engaged together by friction. The brake disc is connected to the motor reel. Through the motor reel and the sprocket, the curtain surface reel is locked, so that the curtain surface will not rise or fall. This is common knowledge in the art and will not be specifically described here.

[0048] It further includes a guiding component 7. Specifically, as Figure 6 and Figure 10 shown, the guiding component 7 includes a telescopic cylinder 701 fixedly installed on the inner side of the upper end of the guide rail 6. A telescopic rod 702 is slidably connected to the inner wall of the telescopic cylinder 701. A guiding wheel 703 is rotationally connected to the end of the telescopic rod 702. A first spring 704 is arranged between the telescopic rod 702 and the telescopic cylinder 701. The guiding component 7 is arranged on the inner side of the guide rail 6 to assist in guiding when the curtain surface 5 is wound up. When the curtain surface 5 rises or falls, the guiding wheel 703 rolls closely against the T-shaped block 10 under the drive of the first spring 704, avoiding displacement of the T-shaped block 10.

[0049] It further includes a support component 8 which is arranged between the two curtain surfaces 5 and is used to support the lowered curtain surface 5. Specifically, as Figure 2 , Figure 3 , Figure 7 , Figure 8 and Figure 9 shown, the support component 8 includes a cable winding shaft 801 rotatably connected between the two motor plates 2. Thread grooves 802 with opposite thread directions are formed on the shaft bodies at both ends of the cable winding shaft 801. A steel cable 803 is wound around the thread grooves 802. The lower end of the steel cable 803 is fixedly connected with a bottom support plate 804. A plurality of auxiliary support plates 805 are sleeved on the steel cable 803. Tensile cables 806 are connected between the plurality of auxiliary support plates 805 and between the lowermost auxiliary support plate 805 and the bottom support plate 804. The upper end of the tensile cable 806 on the uppermost auxiliary support plate 805 is fixedly connected with the fireproof box 3. It should be noted that the end of the cable winding shaft 801 is connected with the rolling curtain machine 1 through a chain. By using the rolling curtain machine 1 to provide power and arranging the thread grooves 802 at both ends of the cable winding shaft 801, it is convenient to orderly wind the steel cable 803 for pulling the bottom support plate 804 and the auxiliary support plates 805, avoiding the stacking of the steel cable 803 and thus preventing the misalignment of the auxiliary support plates 805 during winding, playing a role in automatic leveling.

[0050] As Figure 8 shown, a clamping component 12 is arranged on the auxiliary support plate 805. The clamping component 12 includes a reset rod 1201 fixedly installed on the surface of the auxiliary support plate 805. A reset block 1202 is sleeved on the reset rod 1201. An arc-shaped limiting plate 1203 is fixedly installed at the end of the reset block 1202. A second spring 1204 is sleeved between the tail end of the reset rod 1201 and the reset block 1202. A through hole 807 for the steel cable 803 to pass through is formed on the auxiliary support plate 805. The clamping component 12 is symmetrically arranged on both sides of the through hole 807. By using the clamping component 12 arranged on both sides of the through hole 807, the lowered steel cable 803 is restricted. Especially, the arc-shaped limiting plate 1203 is used to clamp the limiting balls 808 on the steel cable 803, achieving the purpose of limiting and positioning.

[0051] As Figure 7 shown, a plurality of limiting balls 808 are fixedly connected to the steel cable 803. The distance between adjacent two limiting balls 808 is the same as the distance between adjacent two auxiliary support plates 805. Grooves 809 for accommodating the limiting balls 808 are equidistantly arranged on the thread grooves 802 of the cable winding shaft 801.

[0052] As Figure 2 and Figure 7As shown, the support assembly 8 also includes a threaded rod 810 and a guide rod 811 arranged between the two motor plates 2, wherein the threaded rod 810 is rotatably connected to the motor plate 2, the guide rod 811 is fixedly connected to the motor plate 2, a shifting rod 812 is slidably connected to the guide rod 811, and the shifting rod 812 is threadedly connected to the threaded rod 810, the wire-shifting end of the shifting rod 812 is a ring structure, and the steel cable 803 passes through the ring-shaped wire-shifting end of the shifting rod 812.

[0053] like Figure 1 and Figure 6 As shown, the upper end of the guide rail 6 is outwardly expanded at an angle of 30°, which facilitates the separation of the auxiliary support plate 805 from the curtain surface 5, and a graphite-based expansion strip 13 is pre-embedded on the inner side of the guide rail 6. The high temperature generated by the fire will cause the graphite-based expansion strip 13 to rupture and release expanded graphite to fill the gap between the curtain surface 5 and the guide rail 6, thereby achieving a sealing effect.

[0054] like Figure 4 and Figure 9 As shown, both sides of the auxiliary support plate 805 are hinged with abutment plates 14, the inner side of the butt plate 14 is rotatably connected with a butt rod 15, the surface of the auxiliary support plate 805 is provided with a waist hole 18 for the butt rod 15 to pass through, and the end of the butt rod 15 is threadedly connected with an adjusting nut 16, and a third spring 17 is sleeved on the rod body of the butt rod 15. When the local air pressure generated by the fire is too large, the auxiliary support plate 805 supported between the two curtain surfaces 5 is used to support the gap between the curtain surfaces 5. When the auxiliary support plate 805 is opened, the butt plate 14 arranged on the surface of the auxiliary support plate 805 will press against the curtain surface 5 under the action of the third spring 17, thereby increasing its pressure resistance.

[0055] The curtain surface 5 is composed of a stainless steel corrugated plate, a ceramic fiber felt, an aerogel insulation layer, and an aluminum silicate refractory cloth from the outside to the inside, and the four layers are fixed by rivets and elastic buckles.

[0056] It should be noted that the first spring 704 , the second spring 1204 and the third spring 17 are all compression springs.

[0057] Working principle: When the curtain surface 5 needs to be lowered, the rolling curtain machine 1 drives two winding shafts 4 to rotate, so that the curtain surface 5 is lowered under the action of the self-weight of the counterweight strip 9. While the curtain surface 5 is being lowered, the bottom support plate 804 connected to the lower ends of the two curtain surfaces 5 is lowered accordingly, and then the steel cable 803 is pulled down. At the same time, the auxiliary support plate 805 sleeved on the steel cable 803 moves down together with the curtain surface 5. When the curtain surface 5 is lowered to the lower limit position, at this time, the arc-shaped limiting plate 1203 on the auxiliary support plate 805 clamps the limiting ball 808 on the steel cable 803, and at the same time, the uppermost auxiliary support plate 805 stops moving down under the traction of the traction cable 806. At this time, all the auxiliary support plates 805 are evenly distributed between the two curtain surfaces 5 to support the gap between the two curtain surfaces 5; when it is necessary to retract the curtain surface 5, the rolling curtain machine 1 drives the winding shaft 4 to wind up the curtain surface 5. At the same time, the cable winding shaft 801 and the threaded rod 810 also rotate under the drive of the rolling curtain machine 1 to wind up the steel cable 803. The shift lever 812 on the threaded rod 810 moves on its rod body, driving the annular structure at the wire-pulling end of the shift lever 812 to move, and then guiding the steel cable 803, so that the steel cable 803 is evenly received in the receiving groove 802 on the cable winding shaft 801, and the limiting ball 808 on the steel cable 803 is caught in the groove 809 of the receiving groove 802, preventing the steel cables 803 from being stacked together when being received, and making the auxiliary support plates 805 stack evenly.

[0058] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may also be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0059] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An automatic leveling heat-insulating and fire-proof rolling shutter, comprising a rolling shutter machine (1), a motor board (2), a fire-proof box (3), a reel (4), a curtain surface (5) and a guide rail (6), characterized in that: Two of the motor plates (2) are embedded and fixed in the door opening. The reel (4) is rotatably connected to the motor plate (2) through a bearing. The rolling shutter machine (1) is fixedly installed on the motor plate (2) to drive the two reels (4) to rotate synchronously. Two curtain surfaces (5) are respectively wound around the two reels (4). The guide rails (6) are arranged on both sides of the door opening. A guiding assembly (7), which is arranged inside the guide rail (6) and is used for assisting in guiding the curtain surface (5) during winding. A supporting assembly (8), which is arranged between the two curtain surfaces (5) and is used for supporting the lowered curtain surface (5).

2. The automatic leveling type heat-insulating and fireproof rolling shutter according to claim 1, characterized in that: A counterweight bar (9) is fixedly connected to the lower end of the curtain surface (5), and T-shaped blocks (10) are fixedly connected to both sides of the curtain surface (5). Auxiliary wheels (11) are arranged at both ends of the T-shaped block (10).

3. An automatic leveling heat-insulating and fire-proof rolling shutter according to claim 1, characterized in that: The guiding assembly (7) includes a telescopic cylinder (701) fixedly installed on the inner side of the upper end of the guide rail (6). A telescopic rod (702) is slidably connected to the inner wall of the telescopic cylinder (701). A guiding wheel (703) is rotatably connected to the end of the telescopic rod (702). A first spring (704) is arranged between the telescopic rod (702) and the telescopic cylinder (701).

4. An automatic leveling heat-insulating and fire-proof rolling shutter according to claim 1, characterized in that: The supporting assembly (8) includes a winding reel (801) rotatably connected between the two motor plates (2). Thread grooves (802) with opposite thread directions are formed on the shaft bodies at both ends of the winding reel (801). A steel cable (803) is wound around the thread groove (802). The lower end of the steel cable (803) is fixedly connected to a bottom support plate (804). A number of auxiliary support plates (805) are sleeved on the steel cable (803). Tension cables (806) are connected between the auxiliary support plates (805), between the lowermost auxiliary support plate (805) and the bottom support plate (804). The upper end of the tension cable (806) on the uppermost auxiliary support plate (805) is fixedly connected to the fireproof box (3). A clamping assembly (12) is arranged on the auxiliary support plate (805).

5. The automatic leveling heat-insulating and fire-proof rolling shutter according to claim 4, wherein: The clamping assembly (12) includes a reset rod (1201) fixedly installed on the surface of the auxiliary support plate (805). A reset block (1202) is sleeved on the reset rod (1201). An arc-shaped limiting plate (1203) is fixedly installed at the end of the reset block (1202). A second spring (1204) is sleeved between the tail end of the reset rod (1201) and the reset block (1202). A through hole (807) for the steel cable (803) to pass through is formed on the auxiliary support plate (805). The clamping assembly (12) is symmetrically arranged on both sides of the through hole (807).

6. The automatic leveling heat insulation and fireproof rolling shutter according to claim 5, characterized in that: A number of limiting balls (808) are fixedly connected to the steel cable (803). The distance between adjacent two limiting balls (808) is the same as the distance between adjacent two auxiliary support plates (805). Grooves (809) for accommodating the limiting balls (808) are equidistantly arranged on the thread groove (802) of the winding reel (801).

7. An automatic leveling heat-insulating and fire-proof rolling shutter according to claim 4, characterized in that: The support assembly (8) further includes a threaded rod (810) and a guide rod (811) disposed between two motor plates (2). The threaded rod (810) is rotatably connected to the motor plate (2), the guide rod (811) is fixedly connected to the motor plate (2), a shift lever (812) is slidably connected to the guide rod (811), and the shift lever (812) is threadedly connected to the threaded rod (810). The wire-pulling end of the shift lever (812) is of an annular structure.

8. An automatic leveling heat-insulating and fire-proof rolling shutter according to claim 1, characterized in that: The upper end of the guide rail (6) is outwardly expanding, with an outward expansion angle of 30°, and a graphite-based expansion strip (13) is embedded inside the guide rail (6).

9. The automatic leveling type heat insulation and fireproof rolling shutter according to claim 1, characterized in that: Both sides of the auxiliary support plate (805) are hinged with a resisting plate (14). The inner side of the resisting plate (14) is rotatably connected with a resisting rod (15). A waist-shaped hole (18) for the resisting rod (15) to pass through is formed on the surface of the auxiliary support plate (805). The end of the resisting rod (15) is threadedly connected with an adjusting nut (16), and a third spring (17) is sleeved on the rod body of the resisting rod (15).

10. An automatic leveling heat insulation and fireproof rolling shutter according to claim 1, characterized in that: The curtain surface (5) sequentially includes a stainless steel corrugated plate, a ceramic fiber felt, an aerogel heat insulation layer, and a silica-aluminum refractory cloth from outside to inside. The four layers are fixed by rivets and elastic buckles.

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