A conveying guide edge device for a press-in fireproof rolling shutter door

Abstract

The present invention provides a conveying guide edge device for a pressed-in fireproof rolling shutter door, comprising: a foundation pit, a conveying component, a fire door and an inner protection component, wherein the foundation pit is arranged in the ground below the fire door, the conveying component is installed in the foundation pit, the fire door is installed on the door opening of the upper wall on the rear side of the foundation pit, and the fire door is located directly above the rear end of the conveying component. Compared with the prior art, the present invention has the following beneficial effects: by installing the inner protection component inside the foundation pit, the fire door can be supported to prevent the conveying component from being crushed, and at the same time, it can also cooperate with the fire door to form isolation, thereby improving the protection performance of the fire door, the arrangement of the movable guide member 1 and the movable guide member 2, and the movable guide member 1 and the movable guide member 2 that can be lifted and lowered, enable the fire door to be completely closed, so that the entire conveying component can both transport goods and not affect the normal operation of the fire door.

Description

Technical Field

[0001] The invention belongs to the technical field of fire-fighting equipment, and in particular relates to a conveying guide edge device for a press-in fireproof rolling shutter door. Background Art

[0002] A fireproof rolling shutter door is a type of safety door that can provide isolation and block the spread of fire when a fire occurs. It is made of fireproof materials with fire-resistant properties. The opening and closing of the passage is controlled by the rising and falling movement of the rolling shutter door. Fireproof rolling shutter doors are usually installed in the entrances and exits, passages, elevator rooms and other areas of buildings to block the spread of fire smoke and fire, and buy precious time for people to evacuate. Fireproof rolling shutter doors usually have fireproofing, smoke sealing, heat insulation, sound insulation and other properties to ensure the safety of people and property.

[0003] Some fireproof rolling shutter doors are provided with a pit conveying position on the lower side for conveying goods. However, at present, the conveying at the door position where there is a fire door requirement is a related guide structure. When an emergency occurs and the fire door needs to be closed, this type of door position conveying structure is easy to block the fall of the fire door, making it difficult to close tightly, and cannot meet the closing and falling requirements of the fire door. Therefore, we hope to develop a press-in fireproof rolling shutter door conveying guide edge device to solve the above technical problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a push-in fireproof rolling shutter door conveying guide edge device to solve the problems raised in the above-mentioned background technology.

[0005] The present invention is implemented by the following technical scheme: a push-in fireproof rolling shutter door conveying guide edge device, comprising: a foundation pit, a conveying assembly, a fire door and an inner protection assembly, the foundation pit is arranged in the ground below the fire door, the conveying assembly is installed in the foundation pit, and the fire door is installed on the door opening of the upper wall of the rear side of the foundation pit;

[0006] The fire door is located directly above the rear end of the conveying component. An inner protection component is installed at the rear end of the foundation pit. The inner protection component is located inside the rear end of the conveying component, and the upper end of the inner protection component is flush with the ground.

[0007] As a preferred embodiment, the conveying assembly includes a mounting frame, a fixed guide edge, a movable guide member 1 and a movable guide member 2, a fixed guide edge is respectively installed on the left front side and the right front side of the upper end of the mounting frame, and a transmission belt is respectively rotatably installed on the left side and the right side of the upper end of the mounting frame;

[0008] A transmission module is installed on the lower middle side of the mounting frame, and a drive motor is installed on the right middle side of the mounting frame. The drive motor is connected to the transmission module through a transmission shaft, and the drive motor is connected to two transmission belts through the transmission module. The arrangement of the conveying assembly facilitates the transportation of goods through pallets. In actual use, the internal protection assembly installed on the rear side of the foundation pit can be a liftable plate structure or a fixed plate structure. It is not limited to a certain structure as long as it serves the purpose of support and isolation.

[0009] As a preferred embodiment, a movable guide member 2 is movably installed on the left rear side of the upper end of the mounting frame, and a movable guide member 1 is movably installed on the right side of the upper end of the mounting frame;

[0010] The movable guide member comprises a flat guide edge, a guide shaft, a return spring and a fixed seat, the flat guide edge comprises a front guide edge, a middle guide edge and a rear guide edge, the front end of the middle guide edge is welded with the front guide edge, and the rear end of the middle guide edge is welded with the rear guide edge;

[0011] The specification of the rear guide edge is the same as that of the front guide edge. The rear guide edge and the front guide edge are symmetrically arranged about the central axis of the middle guide edge. The flat guide edge is in a curved bow shape as a whole.

[0012] As a preferred embodiment, the front side and the rear side of the lower end of the middle guide edge are each downwardly provided with four fixing holes 1, and the four fixing holes 1 at the front end and the rear end of the middle guide edge are distributed in a rectangular structure;

[0013] The guide shaft comprises a shaft and a rectangular connecting plate, the upper end of the shaft is welded with a rectangular connecting plate, the four corners of the upper surface of the rectangular connecting plate respectively penetrate downward to form a second fixing hole, and the size, number and distribution position of the second fixing hole are matched with the size, number and distribution position of the second fixing hole;

[0014] A guide shaft is fixed to the lower front end and the lower rear end of the middle guide edge of the flat guide edge through four fixing holes 1, four fixing holes 2 and four bolts respectively, and a ring groove is radially provided inwardly at the lower end of the shaft rod of the guide shaft.

[0015] As a preferred embodiment, two fixing seats are installed on the right rear side of the mounting frame, and the cross section of the fixing seats is a "F"-shaped structure. The fixing seats penetrate from top to bottom to form an inner cavity. A guide block is fixed inside each of the fixing seats by a hexagon socket screw, and the guide block is placed in the middle of the inner cavity;

[0016] The guide block 1 includes a slider body and a linear bearing. A mounting cavity is provided inside the slider body. The mounting cavity is a cylindrical cavity. The upper end of the mounting cavity is open. The bottom of the mounting cavity penetrates downward to form a clearance hole. The axis of the clearance hole is colinear with the axis of the mounting cavity.

[0017] A linear bearing is fixed inside the slider body through the mounting cavity, the diameter of the linear bearing is larger than the inner diameter of the clearance hole, the axis of the clearance hole is collinear with the axis of the linear bearing, and the movable guide member 1 and the movable guide member 2 are arranged so that when the fire door is closed, the movable guide member 1 and the movable guide member 2 can be pressed downward to make their height lower than the ground, that is, the fire door can be completely closed, and the arrangement of the movable guide member 1 and the movable guide member 2 enables the entire conveying assembly to convey goods without affecting the normal operation of the fire door.

[0018] As a preferred embodiment, the lower end of the guide shaft passes through a linear bearing and is slidably installed inside the guide block, the lower end of the shaft rod movably passes through the lower end of the guide block, and a limit clamp ring is clamped on the lower end of the shaft rod, and the outer diameter of the limit clamp ring is larger than the inner diameter of the clearance hole;

[0019] A return spring is sleeved on the outer side of the shaft rod, the upper end of the return spring abuts against the lower surface of the rectangular connecting plate, and the lower end of the return spring abuts against the upper end of the guide block.

[0020] As a preferred implementation, the specification of the movable guide member 1 is the same as that of the movable guide member 2, and the height of the upper end of the movable guide member 1 is flush with the height of the upper end of the movable guide member 2.

[0021] After adopting the above technical solution, the beneficial effects of the present invention are: by installing an internal protection component inside the foundation pit, the fire door can be supported to prevent the conveying component from being crushed, and at the same time, it can also form isolation with the fire door to improve the protection performance of the fire door;

[0022] The movable guide member 1 and the movable guide member 2 are arranged, and the movable guide member 1 and the movable guide member 2 can be raised and lowered, so that the fire door can be completely closed, so that the entire conveying assembly can convey goods without affecting the normal operation of the fire door;

[0023] The setting of the guide block, together with the linear bearing inside it, can guide the shaft of the guide shaft when needed, and use the linear bearing to reduce friction, thereby ensuring the stability of the shaft movement and improving the service life of the shaft, thereby avoiding the problem that the movable guide part 1 and the movable guide part 2 cannot be lowered due to damage to the shaft when the fire door is closed, thereby ensuring that the fire door can stably abut against the ground and be completely closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 The present invention is a schematic diagram of the overall structure of a conveying guide edge device for a press-in fireproof rolling shutter door.

[0026] Figure 2 It is a schematic diagram of the conveying component structure of a conveying guide edge device of a press-in fireproof rolling shutter door of the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of a movable guide member 1 and a movable guide member 2 of a conveying guide edge device of a press-in type fireproof rolling shutter door of the present invention.

[0028] Figure 4 It is a schematic diagram of a split structure of a movable guide member of a conveying guide edge device of a press-in fireproof rolling shutter door of the present invention.

[0029] Figure 5 The present invention is a schematic diagram of a guide block structure of a conveying guide edge device of a press-in fireproof rolling shutter door.

[0030] Figure 6 It is a schematic diagram of the structure of the conveying assembly of a press-in fireproof rolling shutter door conveying guide edge device when the fire door is normally open.

[0031] Figure 7 It is a schematic diagram of the conveying component structure of a conveying guide edge device of a press-in fireproof rolling shutter door of the present invention when the fire door is closed.

[0032] Figure 8 It is a schematic diagram of the normal structure of movable guide member 1 and movable guide member 2 of a conveying guide edge device of a press-in fireproof rolling shutter door of the present invention.

[0033] Fig. 9 It is a schematic diagram of the compression structure of movable guide member 1 and movable guide member 2 of a conveying guide edge device of a press-in fireproof rolling shutter door of the present invention.

[0034] In the figure, 100-foundation pit;

[0035] 200-transmission assembly, 210-mounting frame, 220-transmission belt, 230-fixed guide edge, 240-movable guide piece 1, 241-flat guide edge, 242-guide shaft, 243-reset spring, 244-fixed seat, 245-guide block, 2451-slider body, 2452-mounting cavity, 2453-linear bearing, 246-limiting clamp ring, 250-transmission module, 260-drive motor, 270-movable guide piece 2;

[0036] 300- Fire door;

[0037] 400-Internal protection components. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 9 The present invention provides a technical solution: a push-in fireproof rolling shutter door conveying guide edge device, comprising: a foundation pit 100, a conveying assembly 200, a fire door 300 and an inner protection assembly 400, the foundation pit 100 is set in the ground below the fire door 300, the conveying assembly 200 is installed in the foundation pit 100, and the fire door 300 is installed on the door opening of the upper wall of the rear side of the foundation pit 100;

[0040] The fire door 300 is located directly above the rear end of the conveying component 200. An inner protection component 400 is installed at the rear end of the foundation pit 100. The inner protection component 400 is located inside the rear end of the conveying component 200, and the upper end of the inner protection component 400 is flush with the ground.

[0041] See also Figure 1 , Figure 6 as well as Figure 7 The conveying assembly 200 includes a mounting frame 210, a fixed guide edge 230, a movable guide member 1 240 and a movable guide member 270. A fixed guide edge 230 is respectively installed on the left front side and the right front side of the upper end of the mounting frame 210, and a transmission belt 220 is respectively installed on the left side and the right side of the upper end of the mounting frame 210 in a rolling manner;

[0042] A transmission module 250 is installed on the lower middle side of the mounting frame 210, and a drive motor 260 is installed on the right middle side of the mounting frame 210. The drive motor 260 is connected to the transmission module 250 through a transmission shaft, and the drive motor 260 is connected to the two transmission belts 220 through the transmission module 250. The arrangement of the conveying assembly 200 facilitates the transportation of goods by pallets. In actual use, the inner protection assembly 400 installed on the rear side of the foundation pit 100 can be a liftable plate structure or a fixed plate structure. It is not limited to a certain structure as long as it serves the purpose of support and isolation.

[0043] As the first embodiment of the present invention, when an emergency occurs and the fire door 300 needs to be closed (the fire door 300 uses a fireproof rolling shutter door, and its specific model and size can be selected according to actual use requirements), the inner protection component 400 is closed when the fire door 300 is closed (the inner protection component 400 can be a liftable plate structure or a fixed plate structure, and is not limited to a certain structure, as long as it serves the purpose of support and isolation. If it is a liftable plate structure, a metal plate can be used to cooperate with the lifting structure. The lifting structure preferably uses a mechanical lifting structure with a self-locking structure to prevent the upper metal plate from losing support in an emergency. There are many mechanical lifting structures with self-locking structures, and existing structures on the market can be used. For the fixed plate structure, a fixed frame can be used to fix the upper metal plate so that the upper surface height of the metal plate is flush with the height of the ground, that is, the height of the upper surface of the transmission belt 220 on the left and right sides of the conveying component 200. The lower end of the fire door 300 abuts against the movable guide member 1 240 and the movable guide member 2 270 at the rear end of the conveying assembly 200 (the height of the movable guide member 1 240 and the movable guide member 2 270 when not squeezed is greater than the ground height). Since the movable guide member 1 240 and the movable guide member 2 270 are movable and compressible, the fire door 300 will gradually squeeze the movable guide member 1 240 and the movable guide member 2 270 to the maximum compression stroke after closing. At this time, the lower end of the fire door 300 abuts against the upper end of the inner protection assembly 400 (the upper surface of the metal plate in the above two structures). At this time, the inner protection assembly 400 can support the fire door 300 to prevent the conveying assembly 200 from being crushed, and can also cooperate with the fire door 300 to form isolation, thereby improving the protection performance of the fire door 300.

[0044] By installing the inner protection assembly 400 inside the foundation pit 100 , the fire door 300 can be supported to prevent the conveying assembly 200 from being crushed. At the same time, it can also cooperate with the fire door 300 to form isolation and improve the protection performance of the fire door 300.

[0045] See also Figures 1 to 9A movable guide member 270 is movably installed on the left rear side of the upper end of the mounting frame 210, and a movable guide member 1 240 is movably installed on the right side of the upper end of the mounting frame 210;

[0046] The movable guide member includes a flat guide edge 241, a guide shaft 242, a return spring 243 and a fixed seat 244. The flat guide edge 241 includes a front guide edge, a middle guide edge and a rear guide edge. The front end of the middle guide edge is welded with the front guide edge, and the rear end of the middle guide edge is welded with the rear guide edge.

[0047] The specifications of the rear guide edge are the same as those of the front guide edge. The rear guide edge and the front guide edge are symmetrically arranged about the central axis of the middle guide edge. The flat guide edge 241 is an overall curved bow structure.

[0048] Four fixing holes are opened downwards at the front and rear sides of the lower end of the middle guide edge, and the four fixing holes at the front and rear ends of the middle guide edge are distributed in a rectangular structure;

[0049] The guide shaft 242 includes a shaft and a rectangular connecting plate. The upper end of the shaft is welded with a rectangular connecting plate. The four corners of the upper surface of the rectangular connecting plate penetrate downward to form a second fixing hole. The size, number and distribution position of the second fixing hole are matched with the size, number and distribution position of the second fixing hole.

[0050] A guide shaft 242 is fixed to the lower front end and the lower rear end of the middle guide edge 241 through four fixing holes 1, four fixing holes 2 and four bolts respectively, and a ring groove is radially provided at the lower end of the shaft of the guide shaft 242.

[0051] Two fixing seats 244 are installed on the right rear side of the mounting frame 210. The cross section of the fixing seat 244 is a "F"-shaped structure. The fixing seat 244 penetrates from top to bottom to form an inner cavity. A guide block 245 is fixed inside each fixing seat 244 by a hexagon socket screw. The guide block 245 is placed in the middle of the inner cavity.

[0052] The guide block 245 includes a slider body 2451 and a linear bearing 2453. The slider body 2451 is provided with a mounting cavity 2452 inside. The mounting cavity 2452 is a cylindrical cavity. The upper end of the mounting cavity 2452 is open. The bottom of the mounting cavity 2452 penetrates downward to form a clearance hole. The axis of the clearance hole is colinear with the axis of the mounting cavity 2452.

[0053] A linear bearing 2453 is fixed inside the slider body 2451 through the installation cavity 2452. The diameter of the linear bearing 2453 is larger than the inner diameter of the clearance hole. The axis of the clearance hole is colinear with the axis of the linear bearing 2453. The arrangement of the movable guide member 1 240 and the movable guide member 2 270 can press the movable guide member 1 240 and the movable guide member 2 270 downward when the fire door 300 is closed, so that their height is lower than the ground, that is, the fire door 300 can be completely closed. The arrangement of the movable guide member 1 240 and the movable guide member 2 270 enables the entire conveying assembly 200 to convey goods without affecting the normal operation of the fire door 300.

[0054] The lower end of the guide shaft 242 passes through the linear bearing 2453 and is slidably installed inside the guide block 245. The lower end of the shaft rod movably passes through the lower end of the guide block 245. The lower end of the shaft rod is clamped with a limit clamp ring 246. The outer diameter of the limit clamp ring 246 is larger than the inner diameter of the clearance hole.

[0055] A return spring 243 is sleeved on the outer side of the shaft rod, the upper end of the return spring 243 abuts against the lower surface of the rectangular connecting plate, and the lower end of the return spring 243 abuts against the upper end of the guide block 245.

[0056] The specifications of the movable guide member 1 240 are the same as those of the movable guide member 270 , and the height of the upper end of the movable guide member 1 240 is flush with the upper end of the movable guide member 270 .

[0057] As a second embodiment of the present invention, based on the above-mentioned first embodiment, in actual use, when the fire door 300 is closed and gradually approaches the ground, since the movable guide member 1 240 and the movable guide member 270 are normally higher than the ground, the lower end of the closed fire door 300 will gradually press down the movable guide member 1 240 and the movable guide member 270. When the movable guide member 1 240 is squeezed from top to bottom, the downward pressure of the fire door 300 directly acts on the upper end of the flat guide edge 241, thereby causing the flat guide edge 241 to move downward and exert pressure on the lower guide shaft 242 and the return spring 24 3, as the shaft of the guide shaft 242 gradually moves downward under the guidance of the linear bearing 2453 in the guide block 245, the return spring 243 is also gradually compressed synchronously, and the compression of the return spring 243 and the downward movement of the guide shaft 242 enable the flat guide edge 241 to move downward, making way for the lower end of the fire door 300 to contact the ground. When the lower end of the fire door 300 abuts against the ground and the upper end of the inner protection component 400, it is exactly the maximum downward travel position of the return spring 243. At this time, the flat guide edge 241 is pressed into the foundation pit 100, and the height of the upper end of the flat guide edge 241 is flush with the height of the ground.

[0058] When the fire door 300 is opened, that is, when the lower end of the fire door 300 gradually moves upward, under the action of the potential energy of the reset spring 243, the movable guide member 1 240 and the movable guide member 2 270 begin to gradually reset.

[0059] The movable guide member 1 240 and the movable guide member 2 270 are arranged so that the fire door 300 can be completely closed, so that the entire conveying assembly 200 can convey goods without affecting the normal operation of the fire door 300;

[0060] The setting of the guide block 245, in conjunction with the linear bearing 2453 inside it, can guide the shaft of the guide shaft 242 when needed, and use the linear bearing 2453 to reduce friction, thereby ensuring the stability of the shaft movement and improving the service life of the shaft, thereby avoiding the problem that the movable guide member 240 and the movable guide member 2 270 cannot be lowered due to damage to the shaft when the fire door 300 is closed, thereby ensuring that the fire door 300 can stably abut against the ground and be completely closed.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveying guide edge device for a press-in fireproof rolling shutter door, comprising: A foundation pit (100), a conveying assembly (200), a fire door (300), and an inner protection assembly (400), characterized in that the foundation pit (100) is arranged on the ground below the fire door (300), the conveying assembly (200) is installed in the foundation pit (100), and the fire door (300) is installed on a door opening on the upper wall of the rear side of the foundation pit (100); The conveying assembly (200) comprises a mounting frame (210), a fixed guide edge (230), a movable guide member 1 (240) and a movable guide member 2 (270); a fixed guide edge (230) is respectively mounted on the left front side and the right front side of the upper end of the mounting frame (210); and a transmission belt (220) is respectively rotatably mounted on the left side and the right side of the upper end of the mounting frame (210), thereby realizing conveying guidance; The fire door (300) is located directly above the rear end of the conveying assembly (200). An inner protection assembly (400) is installed at the rear end of the foundation pit (100). The inner protection assembly (400) is a lifting plate structure or a fixed plate structure. The width of the metal plate in these two plate structures is smaller than the distance between the two transmission belts (220) on the conveying assembly (200). The inner protection assembly (400) passes through the rear end of the conveying assembly (200) and is fixed to the foundation pit (100). The upper end is flush with the height of the ground, playing a supporting and isolating role.

2. A push-in fireproof rolling shutter door conveying guide edge device as claimed in claim 1, characterized in that: A transmission module (250) is installed on the lower middle side of the mounting frame (210), and a drive motor (260) is installed on the right middle side of the mounting frame (210); the drive motor (260) is connected to the transmission module (250) by power through a transmission shaft, and the drive motor (260) is connected to the two transmission belts (220) by power through the transmission module (250).

3. A push-in fireproof rolling shutter door conveying guide edge device as claimed in claim 2, characterized in that: A movable guide member 2 (270) is movably mounted on the left rear side of the upper end of the mounting frame (210), and a movable guide member 1 (240) is movably mounted on the right side of the upper end of the mounting frame (210); The movable guide member comprises a flat guide edge (241), a guide shaft (242), a return spring (243) and a fixed seat (244); the flat guide edge (241) comprises a front guide edge, a middle guide edge and a rear guide edge; the front end of the middle guide edge is welded with the front guide edge, and the rear end of the middle guide edge is welded with the rear guide edge; The specifications of the rear guide edge are the same as those of the front guide edge, the rear guide edge and the front guide edge are symmetrically arranged about the central axis of the middle guide edge, and the flat guide edge (241) is an overall curved bow structure.

4. A push-in fireproof rolling shutter door conveying guide edge device as claimed in claim 3, characterized in that: The front and rear sides of the lower end of the middle guide edge are each provided with four fixing holes 1 downwardly, and the four fixing holes 1 at the front and rear ends of the middle guide edge are all distributed in a rectangular structure; The guide shaft (242) comprises a shaft and a rectangular connecting plate, the upper end of the shaft being welded with a rectangular connecting plate, the four corners of the upper surface of the rectangular connecting plate respectively penetrate downward to form a second fixing hole, the size, number and distribution position of the second fixing hole all match the size, number and distribution position of the second fixing hole; A guide shaft (242) is fixed to the lower front end and the lower rear end of the middle guide edge of the flat guide edge (241) through four fixing holes 1, four fixing holes 2 and four bolts respectively, and a ring groove is provided radially inwardly at the lower end of the shaft of the guide shaft (242).

5. A push-in fireproof rolling shutter door conveying guide edge device as claimed in claim 4, characterized in that: Two fixing seats (244) are installed on the right rear side of the mounting frame (210), the fixing seats (244) have a cross-section in the shape of a letter "X", the fixing seats (244) penetrate from top to bottom to form an inner cavity, and a guide block (245) is fixed inside each fixing seat (244) by a hexagon socket screw, and the guide block (245) is placed in the middle of the inner cavity; The guide block (245) comprises a slider body (2451) and a linear bearing (2453); a mounting cavity (2452) is arranged inside the slider body (2451); the mounting cavity (2452) is a cylindrical cavity; the upper end of the mounting cavity (2452) is open; the bottom of the mounting cavity (2452) penetrates downward to form a clearance hole; the axis of the clearance hole is colinear with the axis of the mounting cavity (2452); A linear bearing (2453) is fixed inside the slider body (2451) via the mounting cavity (2452); the diameter of the linear bearing (2453) is larger than the inner diameter of the clearance hole; and the axis of the clearance hole is colinear with the axis of the linear bearing (2453).

6. A push-in fireproof rolling shutter door conveying guide edge device as claimed in claim 5, characterized in that: The lower end of the guide shaft (242) passes through a linear bearing (2453) and is slidably mounted inside the guide block (245); the lower end of the shaft rod movably passes through the lower end of the guide block (245); a limit clamping ring (246) is clamped on the lower end of the shaft rod; the outer diameter of the limit clamping ring (246) is larger than the inner diameter of the clearance hole; A return spring (243) is sleeved on the outer side of the shaft rod, the upper end of the return spring (243) abuts against the lower surface of the rectangular connecting plate, and the lower end of the return spring (243) abuts against the upper end of the guide block (245).

7. A push-in fireproof rolling shutter door conveying guide edge device as claimed in claim 3, characterized in that: The specifications of the movable guide member 1 (240) are the same as those of the movable guide member 2 (270), and the height of the upper end of the movable guide member 1 (240) is flush with the upper end of the movable guide member 2 (270).

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