Safety protection fireproof door

Abstract

The utility model discloses a safety protection fireproof door, and relates to the technical field of fireproof doors. The fireproof door comprises a door frame and two fireproof doors, two first half hinges are fixedly installed on the two opposite inner sides of the door frame through screws, and second half hinges used in cooperation with the first half hinges are arranged on the opposite outer sides of the two fireproof doors. Two sets of inserting rods which are symmetrically distributed are fixedly installed on the sides, close to the fireproof doors, of the second half hinges, an empty groove is formed in the side, close to the second half hinges, of each fireproof door, two sets of fixing assemblies are arranged in each empty groove, and each fixing assembly comprises a double-thread screw with two opposite threads; the top of the double-thread screw is rotationally sleeved with a fixing block. According to the fireproof door, when a fire disaster occurs, even if the hinge cannot rotate normally due to the fact that foreign matter such as burning chippings and dust intrudes into the pin shaft, the fireproof door and the hinge can be detached, and the difficulty of fire extinguishing work is reduced.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, specifically a fire door for safety protection. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity and heat insulation within a certain period of time; they are fire-resistant partitions with a certain degree of fire resistance installed in fire compartments, evacuation stairwells, vertical shafts and other similar locations.

[0003] During a fire, there are usually a large amount of burning debris, dust, and other foreign objects. The ash produced by this combustion enters the hinge pin. As the ash accumulates, it increases the resistance to the hinge rotation, making it possible for the fire door to open only slightly and not fully. Since the fire door and the hinge are installed with screws, it is inconvenient to disassemble the fire door, which causes great difficulties for firefighting. Utility Model Content

[0004] To address the problem that when hinges malfunction, fire doors can only be opened partially, making them difficult to remove and hindering firefighting efforts, this invention aims to provide a safe and secure fire door.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a fireproof door for safety protection, including a door frame and two fireproof doors. Two first half-hinges are fixedly installed on the opposite inner sides of the door frame by screws. Second half-hinges, which cooperate with the first half-hinges, are provided on the opposite outer sides of the two fireproof doors. Two sets of symmetrically distributed inserts are fixedly installed on the side of the second half-hinge closest to the fireproof door. A slot is provided on the side of each fireproof door closest to the second half-hinge. Two sets of fixing components are provided inside the slot. Each fixing component includes a double-ended screw with opposite threads at both ends. The top of the double-ended screw... The rotating part is fitted with a fixing block, which is fixedly connected to the fire door; the external thread of the double-ended screw is connected to two symmetrically distributed moving plates, and two moving rods are fixedly installed at the opposite ends of each moving plate. The top end of the insert rod is provided with a fixing groove for cooperating with the moving rod. The bottom end of the double-ended screw is fixedly installed with a connecting rod, and the bottom end of the connecting rod is fixedly installed with a first bevel gear. The outer side of the first bevel gear is meshed with a second bevel gear. One end of the second bevel gear is fixedly installed with a rotating shaft, which rotates through the fire door. The end of the rotating shaft away from the second bevel gear is fixedly installed with a rotating wheel.

[0006] Preferably, a connecting plate is fixedly installed on the side of the fire door near the insertion rod by screws, and a slot for the insertion rod to be used is opened through the connecting plate.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] 1. This application enables the disassembly of the fire door and the hinge even when the hinge cannot rotate normally due to foreign objects such as burning debris and dust entering the pin during a fire, thus reducing the difficulty of firefighting work.

[0009] 2. This application avoids foreign objects such as burning debris and dust from entering the empty slot, causing dust accumulation on the fixing components and affecting the use of the fixing components and the disassembly between the fire door and the hinge. At the same time, it makes it clearer where the second half of the hinge is installed and the insertion rod corresponds to the fixing slot. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the connection structure between the door frame and the first half-hinge in this utility model.

[0013] Figure 3 This is a schematic diagram of the connection structure between the connecting plate and the fire door in this utility model.

[0014] Figure 4 This is a schematic diagram of the connection structure between the insert rod and the fixing groove in this utility model.

[0015] Figure 5 This is a schematic diagram of the internal structure of the fire door slot in this utility model.

[0016] Figure 6 This utility model Figure 5 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Door frame; 10. First half-hinge; 11. Fire door; 2. Second half-hinge; 21. Insert rod; 22. Hollow slot; 23. Double-ended screw; 24. Fixing block; 25. Moving plate; 26. Moving rod; 27. Fixing slot; 3. Connecting rod; 32. First bevel gear; 33. Second bevel gear; 34. Rotating shaft; 35. Rotating wheel; 4. Connecting plate; 41. Slot; 5. Limiting rod; 51. Limiting plate; 6. Card plate; 61. Card slot; 7. Fixing seat. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Figure 1-6 As shown, this utility model provides a fireproof door for safety protection, including a door frame 1 and two fireproof doors 11. Two first half-hinges 10 are fixedly installed on the opposite inner sides of the door frame 1 by screws. The opposite outer sides of the two fireproof doors 11 are provided with second half-hinges 2 that cooperate with the first half-hinges 10. Two sets of symmetrically distributed inserts 21 are fixedly installed on the side of the second half-hinges 2 near the fireproof doors 11. Each fireproof door 11 has a slot 22 on the side near the second half-hinges 2. The slot 22 is provided with two sets of fixing components. The fixing components include double-headed screws 23 with opposite threads at both ends. The top of the double-headed screws 23 is rotatably fitted with a fixing block 24. The fixing block 24 is fixedly connected to the fireproof doors 11.

[0020] The double-ended screw 23 has two symmetrically distributed movable plates 25 connected to its external threads. Two movable rods 26 are fixedly installed at the opposite ends of each movable plate 25. The top of the insertion rod 21 has a fixed groove 27 that works with the movable rod 26. A connecting rod 3 is fixedly installed at the bottom of the double-ended screw 23. A first bevel gear 32 is fixedly installed at the bottom of the connecting rod 3. A second bevel gear 33 is meshed with the outer side of the first bevel gear 32. A rotating shaft 34 is fixedly installed at one end of the second bevel gear 33. The rotating shaft 34 rotates through the fire door 11. A rotating wheel 35 is fixedly installed at the end of the rotating shaft 34 away from the second bevel gear 33.

[0021] A connecting plate 4 is fixedly installed on the side of the fire door 11 near the insertion rod 21 by screws. The connecting plate 4 has a slot 41 through which the insertion rod 21 is used.

[0022] The diameter of the slot 41 is slightly larger than the diameter of the insert rod 21, so that when the second half hinge 2 is installed, the insert rod 21 can quickly pass through the slot 41 on the connecting plate 4, so that the second half hinge 2 fits with the connecting plate 4, thereby improving the installation and disassembly efficiency of the second half hinge 2.

[0023] A limiting rod 5 is fixedly installed at the bottom of the fixed block 24. Two symmetrically distributed limiting plates 51 are slidably sleeved on the outside of the limiting rod 5. The limiting plates 51 are fixedly connected to the corresponding moving plates 25. By setting the limiting rod 5 and the limiting plates 51, the moving plates 25 are limited to prevent the moving plates 25 from rotating with the double-headed screw 23, which would affect the up and down movement of the moving rod 26 driven by the moving plates 25.

[0024] Each movable rod 26 has several evenly distributed ring-shaped locking plates 6 fixedly installed on its exterior. The top of each insert rod 21 is provided with a slot 61 that works with the locking plates 6 at the fixed groove 27. By setting the locking plates 6 and the slots 61, the movable rod 26 that is locked in the fixed groove 27 becomes more stable.

[0025] The connecting rod 3 is fitted with two symmetrically distributed fixed seats 7 on its outer rotating sleeve. The limiting rod 5 is fixedly connected to the fixed seats 7. By setting the fixed seats 7, the stability of the connecting rod 3 is increased.

[0026] Working principle: In actual use, the fixing component is installed in the slot 22 opened on the fire door 11. Then, the connecting plate 4 is placed into the slot 22, so that the fixing plates at both ends of the connecting plate 4 are in contact with the fire door 11. Then, it is fixed with screws. Then, the insert rod 21 on the second half hinge 2 is aligned with the slot 41 on the connecting plate 4, and the insert rod 21 is passed through the corresponding slot 41, so that the second half hinge 2 is in contact with the connecting plate 4. Then, the corresponding rotating wheel 35 is rotated, which drives the corresponding rotating shaft 34 and the second bevel gear 33. When the second bevel gear 33 rotates, the meshing between the second bevel gear 33 and the first bevel gear 32 drives the connecting rod 3 and the double-headed screw 23 to rotate. The moving plate 25 is limited by the limiting plate 51 and the limiting rod 5. The rotation of the double-headed screw 23 drives the moving plate 25 and the moving rod 26 to move towards the corresponding fixing groove 27. When the moving plate 25 is in contact with the corresponding insert rod 21, it means that the insert rod 21 is completely inserted into the corresponding fixing groove 27, fixing the second half hinge 2 together. It also means that the rotating wheel 35 can no longer rotate.

[0027] When a fire occurs, if the fire door 11 is opened slightly and the hinge suddenly stops turning, the reverse wheel 35 will reverse, causing the shaft 34 and the second bevel gear 33 to reverse. The reverse rotation of the second bevel gear 33 will drive the first bevel gear 32, the connecting rod 3, and the double-ended screw 23 to reverse, causing the moving plate 25 and the moving rod 26 to move towards the center. This will cause the moving rod 26 to disengage from the corresponding fixing groove 27. When the two opposing moving plates 25 are in contact, it indicates that the moving rod 26 has completely disengaged from the corresponding fixing groove 27. At the same time, it also indicates that the wheel 35 can no longer turn. Repeat the operation. Then, pull the fire door 11 outward to separate the connecting plate 4 and the second half hinge 2 on the fire door 11. The fire door 11 can then be disassembled for rescue.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A fireproof door for safety protection, comprising a door frame (1) and two fireproof doors (11), characterized in that: Two first half-hinges (10) are fixedly installed on the opposite inner sides of the door frame (1) by screws. Two second half-hinges (2) are provided on the opposite outer sides of the two fire doors (11) to cooperate with the first half-hinges (10). Two sets of symmetrically distributed plug rods (21) are fixedly installed on the side of the second half-hinges (2) near the fire door (11). Each fire door (11) has a slot (22) on the side near the second half-hinges (2). Two sets of fixing components are provided inside the slot (22). The fixing components include double-headed screws (23) with opposite threads at both ends. A fixing block (24) is rotatably sleeved on the top of the double-headed screws (23). The fixing block (24) is fixedly connected to the fire door (11). The double-ended screw (23) is externally threaded with two symmetrically distributed movable plates (25). Two movable rods (26) are fixedly installed at opposite ends of each movable plate (25). The top end of the insert rod (21) is provided with a fixed groove (27) that cooperates with the movable rod (26). A connecting rod (3) is fixedly installed at the bottom end of the double-ended screw (23). A first bevel gear (32) is fixedly installed at the bottom end of the connecting rod (3). A second bevel gear (33) is meshed with the outer side of the first bevel gear (32). A rotating shaft (34) is fixedly installed at one end of the second bevel gear (33). The rotating shaft (34) rotates through the fire door (11). A rotating wheel (35) is fixedly installed at the end of the rotating shaft (34) away from the second bevel gear (33).

2. The fireproof door for safety protection as described in claim 1, characterized in that, The fire door (11) has a connecting plate (4) fixedly installed on the side near the plug (21) by screws. The connecting plate (4) has a slot (41) through which the plug (21) is used.

3. A fireproof door for safety protection as described in claim 2, characterized in that, The diameter of the slot (41) is slightly larger than the diameter of the insert (21).

4. A fireproof door for safety protection as described in claim 1, characterized in that, A limiting rod (5) is fixedly installed at the bottom of the fixed block (24). Two symmetrically distributed limiting plates (51) are slidably sleeved on the outside of the limiting rod (5). The limiting plates (51) are fixedly connected to the corresponding moving plates (25).

5. A fireproof door for safety protection as described in claim 1, characterized in that, Each of the moving rods (26) has several annularly distributed clamping plates (6) fixedly installed on its exterior. Each of the insert rods (21) has a slot (61) through which it is used to cooperate with the clamping plates (6) at the position of the fixed groove (27).

6. A fireproof door for safety protection as described in claim 4, characterized in that, The connecting rod (3) is externally rotatably fitted with two symmetrically distributed fixed seats (7), and the limiting rod (5) is fixedly connected to the fixed seats (7).

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