Fireproof gate for material storage

Abstract

The utility model provides a kind of fireproof gate for material storage, it is related to material storage fire safety field, it includes reel box and curtain plate, the both sides of curtain plate are matched with sealing assembly, sealing assembly includes guide rail, guide rail is fixedly installed at the bottom end of reel box, guide rail inside is provided with guide frame, the side close to curtain plate of guide frame is fixed with sealing rubber strip, fireproof gate for material storage further includes linkage assembly;Linkage assembly includes rotating shaft that is rotatably installed on guide rail, one end of rotating shaft is fixedly connected with first screw rod, first screw rod is transversely arranged and is screwed with guide frame, the other end of rotating shaft extends to the outside of guide rail and is coaxially fixed with gear, gear is engaged with rack, rack is vertically arranged and is fixedly connected with support rod at bottom, the lower end of support rod is fixedly connected with moving frame;The side of moving frame is below curtain plate.The utility model solves the technical problem that the gap between the existing fireproof gate and door frame is reserved, which causes smoke to easily penetrate.

Description

Technical Field

[0001] This utility model relates to the field of fire safety in material storage, and in particular to a fireproof gate for material storage. Background Technology

[0002] In modern material storage systems, materials are densely packed and the storage environment is complex. Once a fire occurs, the fire and smoke can spread rapidly along the passageway, which may not only cause significant material and property losses, but also threaten the safety of personnel and the stability of surrounding facilities. Therefore, fire gates, as the core fire protection facilities to block the spread of fire, are of paramount importance to the safety of storage.

[0003] Existing technologies include various solutions for fireproof gates used in material storage. For example, Chinese utility model patent CN213838399U discloses a fireproof aluminum alloy roller shutter door, which includes a roller shutter shaft, a roller drum, a roller shutter door, and a door frame. In use, the roller shutter shaft drives the roller drum to rotate, which in turn drives the roller shutter door to descend synchronously, thus closing the storage passage and preventing the spread of fire. Typically, to prevent friction and jamming between the roller shutter door and the door frame during descent and to ensure smooth movement, a certain amount of clearance must be left between the sides of the roller shutter door and the door frame.

[0004] However, in existing technology, the gaps reserved to ensure smooth descent of roller shutters can become channels for smoke to penetrate during a fire. Smoke can spread through these gaps to other areas of the warehouse, reducing visibility and hindering personnel evacuation and fire rescue operations; moreover, it may be accompanied by the spread of toxic gases, posing a threat to personnel safety. Utility Model Content

[0005] This application provides a fireproof gate for material storage, which solves the technical problem that smoke can easily pass through due to the gap between the existing fireproof gate and the door frame.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a fireproof gate for material storage, comprising a roller box and a curtain panel, with sealing components fitted on both sides of the curtain panel. The sealing components include a guide rail, which is fixedly installed at the bottom of the roller box. A guide frame is provided inside the guide rail, and a sealing strip is fixed to the side of the guide frame close to the curtain panel. The fireproof gate for material storage also includes a linkage component; the linkage component includes a rotating shaft rotatably installed on the guide rail, with a first screw fixedly connected to one end of the rotating shaft. The first screw is arranged horizontally and threadedly engaged with the guide frame. The other end of the rotating shaft extends to the outside of the guide rail and is coaxially fixedly fitted with a gear. The gear meshes with a rack, which is arranged vertically and has a support rod fixedly connected to its bottom. A movable frame is fixedly connected to the lower end of the support rod; one side of the movable frame is located below the curtain panel.

[0007] Because the rotating shaft is mounted on the guide rail, one end of it is connected to a first screw that is horizontally set and threaded into the guide frame, and the other end is connected to a gear. The gear meshes with a vertical rack, and the bottom of the rack is connected to a support rod. The lower end of the support rod is connected to a movable frame located below the curtain panel. When the curtain panel reaches the bottom, it pushes the movable frame below it. The movable frame drives the rack to move vertically through the support rod. The rack meshes with the gear and the coaxial rotating shaft to rotate. The rotating shaft then drives the first screw to rotate. The threaded engagement between the first screw and the guide frame drives the guide frame to move towards the curtain panel, so that the sealing strip on the guide frame gradually adheres to the curtain panel. Therefore, it can fill the gap between the curtain and the door frame, prevent smoke from passing through in the event of a fire, and help ensure the evacuation of personnel and the conduct of fire rescue operations. At the same time, it prevents the spread of toxic gases and reduces the threat to personnel safety.

[0008] As a further improvement to the above solution, two sets of sealing components and linkage components are provided, and the two sets of sealing components and linkage components are symmetrically arranged on the left and right sides of the curtain panel, respectively; thereby ensuring the sealing performance of the left and right sides of the curtain panel.

[0009] As a further improvement to the above solution, the movable frame slides with the guide rail, and a positioning block is fixedly connected to one side of the inner wall of the movable frame. A positioning groove adapted to the positioning block is provided on one side of the bottom of the guide rail, and the positioning block slides into the positioning groove. This can prevent the movable frame from deviating from the preset trajectory, such as horizontal displacement, when it rises and falls with the curtain or is subjected to external force.

[0010] As a further improvement to the above solution, a base plate is fixedly connected to the bottom end of the curtain panel, and the end of the base plate is provided with a downward-facing slot. When the curtain panel moves downward, the slot can engage with the outside of the moving frame near the curtain panel.

[0011] As a further improvement to the above solution, the upper part of the support rod has a T-shaped structure, and the rack is connected to the support rod through a disassembly assembly.

[0012] As a further improvement to the above solution, the disassembly and assembly assembly includes a second screw that passes through one side of the upper part of the support rod. The bottom end of the rack has a threaded hole, and the second screw engages with the threaded hole after passing through the support rod. Thus, when the sealing strip needs to be replaced and the rack's restriction on the gear needs to be released, the rack can be quickly disassembled. After the sealing strip is replaced, the rack can be efficiently reset and installed, thereby improving the convenience and efficiency of maintenance operations.

[0013] As a further improvement to the above solution, a limiting component is installed at the bottom of the guide rail. The limiting component includes a disk, and a limiting rod is fixedly connected to one end face of the disk. The limiting rod passes through the bottom of the guide rail, and a fixing block is slidably fitted on the outer periphery of the limiting rod. The fixing block is fixedly connected to the moving frame. The upper and lower surfaces of the limiting rod away from the disk are both inclined surfaces, and the inclined surface length L2 of the lower surface is greater than the inclined surface length L1 of the upper surface.

[0014] As a further improvement to the above solution, a spring is connected between the fixing block and the disc, with the two ends of the spring fixed to the fixing block and the disc respectively; the spring can exert a continuous pulling force on the limiting rod through its own elastic force, so that when the fireproof gate has not descended to the bottom, it can pull the limiting rod to keep it inserted into the guide rail, thus preventing the limiting rod from accidentally dislodging from the guide rail due to external forces such as vibration or slight collision.

[0015] As can be seen from the above technical solutions, this utility model has at least the following technical effects or advantages: Because the rotating shaft is mounted on the guide rail, one end is connected to a horizontally positioned first screw that is threaded into the guide frame, and the other end is connected to a gear. The gear meshes with a vertical rack, and the bottom of the rack is connected to a support rod. The lower end of the support rod is connected to a movable frame located below the curtain panel. When the curtain panel reaches the bottom, it pushes the movable frame below it. The movable frame, through the support rod, drives the rack to move vertically. The rack meshes with the gear and the coaxial rotating shaft to rotate, which in turn drives the first screw to rotate. The threaded engagement between the first screw and the guide frame drives the guide frame to move towards the curtain panel, causing the sealing strip on the guide frame to gradually adhere to the curtain panel. Therefore, it can fill the gap between the curtain and the door frame, preventing smoke from passing through during a fire, which is beneficial for ensuring personnel evacuation and fire rescue operations, while also preventing the spread of toxic gases and reducing threats to personnel safety. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the guide rail in this utility model; Figure 3 This is a schematic diagram showing the cooperation between the linkage component, the guide rail, and the guide frame in this utility model; Figure 4 This is a schematic diagram of the rack and pinion mounting on the support rod in this utility model; Figure 5This is a three-dimensional structural breakdown diagram of the base plate, guide rail, moving frame, and limiting components of this utility model. Figure 6 This is a schematic diagram of the limiting rod and the limiting disc.

[0017] Explanation of reference numerals in the attached drawings: 1. Roller box; 2. Sealing assembly; 3. Curtain panel; 4. Linkage assembly; 5. Limiting assembly; 6. Disassembly assembly; 21. Guide rail; 22. Base plate; 23. Guide frame; 24. Sealing strip; 41. Rack; 42. Gear; 43. Support rod; 44. Moving frame; 45. Slot; 46. First screw; 47. Rotating shaft; 48. Positioning block; 49. Positioning groove; 51. Disc; 52. Spring; 53. Fixing block; 54. Limiting rod; 61. Second screw; 62. Threaded hole. Detailed Implementation To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.

[0018] This utility model discloses a fireproof gate for material storage, such as Figures 1 to 3As shown, it includes a roller box 1 for storing the curtain panel 3 and a curtain panel 3 that can be raised and lowered vertically. Both sides of the curtain panel 3 are fitted with sealing components 2 for blocking flames and smoke. The sealing components 2 include guide rails 21, which are fixedly installed vertically at the bottom of the roller box 1. The guide rails 21 provide stable guidance for the raising and lowering of the curtain panel 3, preventing the curtain panel 3 from shifting. Inside the guide rails 21, a guide frame 23 is provided vertically. A sealing strip 24 is fixed to the side of the guide frame 23 close to the curtain panel 3. The sealing strip 24 is made of a fire-resistant elastic material (such as fire-resistant rubber) and can deform under pressure to fill gaps. The fireproof gate also includes a linkage assembly 4 for driving the sealing strip 24 to move; the linkage assembly 4 includes a rotating shaft 47 rotatably mounted on the side wall of the guide rail 21. The rotating shaft 47 is arranged in a horizontal direction, one end of which extends into the interior of the guide rail 21 and is coaxially welded and fixed to a first screw 46. The first screw 46 is also arranged horizontally and its outer circumference is threadedly engaged with the side wall of the guide frame 23 (the guide frame 23 has an internal thread hole adapted to the first screw 46 at the corresponding position); the other end of the rotating shaft 47 passes through the outer side wall of the guide rail 21 and is coaxially welded and fixed to a gear 42. The outer circumference of the gear 42 meshes with a rack 41. The rack 41 is arranged vertically and its bottom is fixedly connected to the top of the support rod 43. The support rod 43 extends in a vertical direction and its lower end is fixed to the moving frame 44; the moving frame 44 has a frame structure, and its side near the curtain panel 3 is located directly below the curtain panel 3. It can be pushed downward by the bottom component of the curtain panel 3 when the curtain panel 3 descends.

[0019] like Figure 1 , 3 As shown, both the sealing assembly 2 and the linkage assembly 4 are provided in two sets. The two sets of sealing assemblies 2 are symmetrically distributed on the left and right sides of the curtain panel 3, respectively. The guide rail 21 in each set of sealing assemblies 2 is fixed to the bottom of the roller box 1, and the relative inner sidewalls of the two sets of guide rails 21 correspond to the left and right sides of the curtain panel 3, respectively. This ensures that both sides of the curtain panel 3 can be guided when it is raised and lowered. The two sets of linkage assemblies 4 cooperate with the sealing assemblies 2 on the corresponding side. That is, the rotating shaft 47, the first screw 46 and other components of each set of linkage assemblies 4 are installed on the guide rail 21 on the corresponding side. The rack 41, the support rod 43 and the moving frame 44 are also located below the left and right sides of the curtain panel 3, respectively, forming a symmetrical linkage structure.

[0020] like Figure 3 , Figure 5 As shown, the movable frame 44 and the guide rail 21 slide in a vertical direction. A positioning block 48 is integrally formed on the inner wall of the movable frame 44 near the guide rail 21. The positioning block 48 has a cuboid block structure. A positioning groove 49 extending vertically is provided on the bottom of the guide rail 21 near the movable frame 44. The width of the positioning groove 49 is adapted to the length of the positioning block 48. The positioning block 48 can slide up and down along the length of the positioning groove 49. The positioning block 48 can ensure that the movable frame 44 moves only in the vertical direction.

[0021] like Figure 1 , Figure 5 As shown, a base plate 22 is fixedly connected to the bottom end of the curtain panel 3. The length of the base plate 22 is the same as the width of the curtain panel 3. The base plate 22 increases the contact area between the curtain panel 3 and the ground, improving the fireproof sealing effect at the bottom. Both ends of the base plate 22 are provided with downward-facing slots 45. The width of the slots 45 is adapted to the width of the frame of the movable frame 44 on the side near the curtain panel 3. When the curtain panel 3 moves downward to near the ground, the base plate 22 moves downward synchronously with the curtain panel 3. At this time, the side of the movable frame 44 near the curtain panel 3 can gradually engage in the slots 45, realizing the linkage between the base plate 22 and the movable frame 44 and preventing them from sliding relative to each other.

[0022] like Figure 4 As shown, the upper part of the support rod 43 has a T-shaped structure, with the horizontal section of the T-shaped structure extending to both sides. The rack 41 is detachably connected to the support rod 43 via a disassembly assembly 6. The disassembly assembly 6 includes a second screw 61, which penetrates vertically through the horizontal section of the upper T-shaped structure of the support rod 43 and is threadedly engaged with the rack 41. Specifically, the bottom end of the rack 41 has a threaded hole 62 that matches the second screw 61. After the second screw 61 penetrates the support rod 43, it can be screwed into the threaded hole 62 to fix the rack 41 to the support rod 43. When it is necessary to disassemble the rack 41, simply unscrew the second screw 61 in the opposite direction to remove the rack 41 from the support rod 43.

[0023] like Figure 5 , Figure 6 As shown, a limiting component 5 is installed on the bottom outer wall of the guide rail 21. The limiting component 5 includes a disc 51. One end face of the disc 51 (the end face near the guide rail 21) is welded and fixed to one end of a limiting rod 54. The limiting rod 54 passes through the bottom side wall of the guide rail 21 in the horizontal direction and slides with the side wall of the guide rail 21, allowing it to reciprocate in the horizontal direction. A fixing block 53 is slidably fitted on the outer circumferential surface of the limiting rod 54. The hole on the fixing block 53 through which the limiting rod 54 passes is a vertical strip hole. The fixing block 53 is fixedly connected to the outer wall of the moving frame 44 and can move vertically synchronously with the moving frame 44. The upper and lower surfaces of the limiting rod 54 away from the disc 51 are both inclined surfaces, and the length L2 of the lower inclined surface is greater than the length L1 of the upper inclined surface. This inclined surface structure allows the upper inclined surface of the limiting rod 54 to contact the side wall of the guide rail 21 and be guided to move outward when the moving frame 44 moves downward. A spring 52 is also connected between the fixed block 53 and the disc 51. The spring 52 is sleeved on the outer periphery of the limiting rod 54, and its two ends are welded and fixed to the end face of the fixed block 53 and the end face of the disc 51, respectively. The spring 52 is in a stretched state in its natural state, which can pull the limiting rod 54 to keep it inserted into the guide rail 21, thereby realizing the initial limiting of the moving frame 44.

[0024] In the initial state before the curtain panel 3 descends, in the limiting assembly 5, the limiting rod 54 passes horizontally through the fixing block 53 and inserts into the guide rail 21. One end of the limiting rod 54 inside the guide rail 21 is precisely locked at the bottom of the moving frame 44, forming a vertical limit on the moving frame 44. At this time, the positioning block 48 on one side of the inner wall of the moving frame 44 is fitted into the top of the positioning groove 49 at the bottom of the guide rail 21. The spring 52 is sleeved on the outer periphery of the limiting rod 54, and its two ends are fixed to the fixing block 53 and the disc 51 respectively. It is in a naturally stretched state, and the elastic force maintains the locking state of the limiting rod 54. At the same time, the guide frame 23 is located inside the guide rail 21 on the side away from the curtain panel 3. The sealing strip 24 on its surface maintains a preset gap with the side of the curtain panel 3. In this embodiment, the preset gap is not greater than the pitch of the first screw 46. The lower part of the rack 41 of the linkage assembly 4 meshes with the gear 42.

[0025] When the fireproof gate needs to be closed, the drive mechanism inside the roller box 1 is activated, causing the curtain panel 3 to move vertically downwards along the guide rail 21. During the initial descent, due to the gap between the sealing strip 24 and the curtain panel 3, there is no frictional obstruction on both sides of the curtain panel 3, allowing it to move smoothly downwards. As the curtain panel 3 continues to descend, the bottom plate 22 fixed at its bottom gradually approaches the moving frame 44 until the curtain panel 3 descends to near the bottom, at which point the bottom plate 22 is in complete contact with the top of the moving frame 44.

[0026] The curtain panel 3 continues to move downwards and applies downward pressure to the moving frame 44 through the base plate 22, pushing the moving frame 44 to move downwards along the positioning groove 49 from its original initial position. During this process, the bottom of the moving frame 44 directly contacts the upper inclined surface of the limiting rod 54 located inside the guide rail 21. As the moving frame 44 continues to move downwards, the squeezing force on the upper inclined surface of the limiting rod 54 gradually increases, forcing the limiting rod 54 to overcome the tension of the spring 52 and move a certain distance to the outside of the guide rail 21 until the limiting rod 54 is completely detached from the bottom of the moving frame 44. During this process, the hole on the fixing block 53 through which the limiting rod 54 passes is a vertical strip hole, thus avoiding interference between the limiting rod 54 and the fixing block 53. At the same time, the fixing block 53, which is fixedly connected to the moving frame 44, moves downwards synchronously with the moving frame 44. The movable frame 44 drives the rack 41 to move downward in the vertical direction through the support rod 43 fixed at its upper end. The rack 41 and the gear 42 maintain meshing and drive the gear 42 to rotate around the rotating shaft 47, thereby driving the rotating shaft 47 fixed coaxially with the gear 42 and the first screw 46 at the other end of the rotating shaft 47 to rotate synchronously. Since the first screw 46 is threadedly engaged with the guide frame 23, its rotation will drive the guide frame 23 to move along the inside of the guide rail 21 towards the curtain panel 3. The guide frame 23 synchronously drives the sealing strip 24 on its surface to gradually move closer to the side of the curtain panel 3.

[0027] When the curtain panel 3 is fully lowered to the bottom (the base plate 22 contacts the ground), taking the gear 42 rotating nearly one revolution as an example, the moving distance of the guide frame 23 is close to the pitch of the first screw 46. Since the preset gap between the sealing strip 24 and the side of the curtain panel 3 in the initial state is not greater than the pitch of the first screw 46, the guide frame 23 drives the sealing strip 24 to move, which can achieve the sealing strip 24 to fit with the side of the curtain panel 3, thereby effectively blocking the penetration channel of smoke through the gaps on both sides of the curtain panel 3 during a fire, thus completing the closing action of the fireproof gate.

[0028] When the fireproof gate needs to be opened, the drive mechanism inside the roller box 1 starts in reverse, driving the curtain panel 3 to move vertically upward along the guide rail 21. In the initial upward movement stage, the bottom plate 22 at the bottom of the curtain panel 3 first disengages from the top of the moving frame 44. As the curtain panel 3 moves upward, the groove 45 at its end gradually disengages from the outside of the moving frame 44.

[0029] After the curtain panel 3 moves upward a certain distance, the movable frame 44 can be manually lifted to move it to its initial position, and the limiting rod 54 can be reinserted into the guide rail 21 to maintain the position of the movable frame 44. During the upward movement of the movable frame 44, the support rod 43 at its upper end simultaneously drives the rack 41 to move upward vertically; the rack 41 and the gear 42 remain engaged, and the upward movement of the rack 41 drives the gear 42 to rotate in the opposite direction, thereby driving the rotating shaft 47 and the first screw 46, which are coaxially fixed with the gear 42, to rotate in the opposite direction simultaneously. Since the first screw 46 is threadedly engaged with the guide frame 23, the reverse rotation of the first screw 46 will drive the guide frame 23 to move away from the curtain panel 3 along the inside of the guide rail 21. The guide frame 23 simultaneously drives the sealing strip 24 on its surface to gradually detach from the side of the curtain panel 3 until the sealing strip 24 and the side of the curtain panel 3 return to the initial preset gap.

[0030] When the sealing strip 24 needs to be replaced due to aging and wear from long-term use, unscrew the second screw 61 and remove the rack 41 from the support rod 43. At this time, the gear 42 is no longer limited by the rack 41, and the gear 42 can be manually rotated to drive the first screw 46 to rotate, so that the guide frame 23 moves out of the guide rail 21 in the horizontal direction, and then the sealing strip 24 can be replaced. After the replacement is completed, the reverse operation can be performed to reset it. The maintenance process is convenient and efficient.

[0031] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this utility model and do not require that this utility model be constructed or operated in a specific orientation, and therefore should not be construed as limiting this utility model. The terms "connected" and "linked" in this utility model should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in its embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A fireproof gate for material storage, comprising a roller box (1) and a curtain panel (3), wherein sealing components (2) are fitted on both sides of the curtain panel (3), the sealing components (2) comprising a guide rail (21), the guide rail (21) being fixedly installed at the bottom end of the roller box (1), a guide frame (23) being provided inside the guide rail (21), and a sealing strip (24) being fixed on the side of the guide frame (23) close to the curtain panel (3), characterized in that, The fireproof gate for material storage also includes a linkage component (4). The linkage component (4) includes a rotating shaft (47) rotatably mounted on the guide rail (21). One end of the rotating shaft (47) is fixedly connected to a first screw (46). The first screw (46) is arranged horizontally and threadedly engaged with the guide frame (23). The other end of the rotating shaft (47) extends to the outside of the guide rail (21) and is coaxially fixed with a gear (42). The gear (42) meshes with a rack (41). The rack (41) is arranged vertically and is fixedly connected to a support rod (43) at its bottom. The lower end of the support rod (43) is fixedly connected to a movable frame (44). One side of the movable frame (44) is located below the curtain panel (3).

2. A fireproof gate for material storage according to claim 1, characterized in that, The sealing component (2) and the linkage component (4) are each provided in two sets, and the two sets of the sealing component (2) and the linkage component (4) are respectively symmetrically arranged on the left and right sides of the curtain plate (3).

3. A fireproof gate for material storage according to claim 2, characterized in that, The movable frame (44) is slidably engaged with the guide rail (21). A positioning block (48) is fixedly connected to one side of the inner wall of the movable frame (44). A positioning groove (49) adapted to the positioning block (48) is provided on one side of the bottom of the guide rail (21). The positioning block (48) is slidably fitted into the positioning groove (49).

4. A fireproof gate for material storage according to claim 3, characterized in that, The bottom end of the curtain panel (3) is fixedly connected to a base plate (22). The end of the base plate (22) is provided with a downward-opening slot (45). When the curtain panel (3) moves downward, the slot (45) can engage with the outside of the moving frame (44) near the side of the curtain panel (3).

5. A fireproof gate for material storage according to claim 1, characterized in that, The upper part of the support rod (43) is a T-shaped structure, and the rack (41) is connected to the support rod (43) through the disassembly assembly (6).

6. A fireproof gate for material storage according to claim 5, characterized in that, The disassembly and assembly assembly (6) includes a second screw (61), which passes through one side of the upper part of the support rod (43). The bottom end of the rack (41) is provided with a threaded hole (62). The second screw (61) passes through the support rod (43) and then engages with the threaded hole (62).

7. A fireproof gate for material storage according to any one of claims 1 to 5, characterized in that, A limiting component (5) is installed at the bottom of the guide rail (21). The limiting component (5) includes a disc (51). A limiting rod (54) is fixedly connected to one end face of the disc (51). The limiting rod (54) passes through the bottom of the guide rail (21). A fixing block (53) is slidably fitted on the outer periphery of the limiting rod (54). The fixing block (53) is fixedly connected to the moving frame (44). The upper and lower surfaces of the limiting rod (54) away from the disc (51) are both inclined surfaces, and the length L2 of the lower inclined surface is greater than the length L1 of the upper inclined surface.

8. A fireproof gate for material storage according to claim 7, characterized in that, A spring (52) is connected between the fixing block (53) and the disc (51), and the two ends of the spring (52) are fixed to the fixing block (53) and the disc (51) respectively.

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