Bidirectional split steel fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, in particular to a bidirectional split steel fireproof door which comprises a vertical frame used for fixing the fireproof door. A transverse frame is fixedly arranged on one side of the vertical frame and used for fixing the fireproof door, and a transverse baffle opening is fixedly formed in the bottom of the transverse frame. According to the utility model, the third fireproof expansion sealing element is adhered to the section difference position of the split seam covering plate, so that the sealing performance of the center seam position can be ensured, and the fireproof stability of the center seam position is improved; the gap position, namely the center joint position of the first door leaf and the second door leaf, is a dangerous point, the split gap covering plate covers the center joint position after the first door leaf and the second door leaf are closed, the upper edge of the split gap covering plate is just located at the gap position of the two crosspiece openings, and the safety of the dangerous point can be effectively guaranteed by adding a third fireproof expansion sealing piece on the upper edge.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, specifically a two-way double-leaf steel fire door. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and thermal 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] However, current fire door technology usually only allows for one-way opening. To achieve two-way evacuation, two single-leaf fire doors with different opening directions are usually installed to ensure fire resistance while allowing for two-way opening. At the same time, some doors on the market use free-hinged doors to achieve two-way opening. However, these free-hinged doors do not have fire-resistant overlap between the door frame and the door leaf, nor do they have a fire-resistant sealing overlap between the two leaves, which does not meet the fire resistance requirements at all. The structure and fire resistance performance of double-leaf steel fire doors urgently need to be addressed. Utility Model Content

[0004] Therefore, this utility model provides a two-way double-opening steel fire door to solve the above-mentioned problems.

[0005] This utility model provides the following technical solution: a two-way double-leaf steel fire door, including a vertical frame, wherein the vertical frame is used to fix the fire door;

[0006] A horizontal frame is fixedly provided on one side of the vertical frame, and the horizontal frame is used to fix the fire door;

[0007] A horizontal stop is fixedly provided at the bottom of the horizontal frame. The horizontal stop is used to limit the fire door and prevent the spread of fire.

[0008] A vertical stop is fixedly provided on one side of the vertical frame. The vertical stop is used to limit the fire door and prevent the spread of fire.

[0009] Preferably, there are two horizontal stops. The left horizontal stop is located on the front surface of the left side of the horizontal frame, and the right horizontal stop is located on the back surface of the right side of the horizontal frame. The left side of the left horizontal stop is in contact with the right side of the left vertical stop, and the right side of the right horizontal stop is in contact with the left side of the right vertical stop. Hinges are fixedly installed on the back surface of the left vertical frame and the front surface of the right vertical frame. The output end of the left hinge is hinged to the first door leaf, and the output end of the right hinge is hinged to the second door leaf.

[0010] Preferably, push bar locks are fixedly installed on the front surface of the first door leaf and the back surface of the second door leaf, and split cover plates are fixedly connected to the right side of the back surface of the first door leaf and the left side of the front surface of the second door leaf.

[0011] Preferably, the left and right sides of the first door leaf and the left and right sides and the top of the second door leaf are all fixedly connected with a first fireproof expansion seal.

[0012] Preferably, a second fire-resistant expansion seal is fixedly connected to the back surface of the left vertical opening and the front surface of the right vertical opening, and a third fire-resistant expansion seal is fixedly connected to the front surface of the left split cover plate, the back surface of the right split cover plate, and the back surface of the horizontal opening.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, by attaching a third fireproof expansion sealant to the section difference position of the split cover plate, the sealing performance of the middle seam can be guaranteed, and the fire resistance stability of the middle seam can be increased. Since the horizontal stop is not a whole but a split stop with an inner and outer section, the joint position, which is the middle seam of the first and second door panels, is a danger point. After the first and second door panels are closed, the split cover plate covers the middle seam, and its upper edge is exactly at the joint position of the two horizontal stops. Adding a third fireproof expansion sealant to the upper edge can effectively ensure the safety of the danger point. Attached Figure Description

[0015] Figure 1 This is a plan view of the door structure of this utility model in the closed state;

[0016] Figure 2 This is a partial structural side view of the present invention;

[0017] Figure 3 This is a plan view of the door structure in the open state of this utility model;

[0018] Figure 4 This is a top plan view of the door structure in the closed state of this utility model;

[0019] Figure 5 This is a top plan view of the door structure in the open state of this utility model.

[0020] In the diagram: 1. Vertical frame; 2. Vertical stop; 3. Horizontal stop; 4. Horizontal frame; 5. Split cover plate; 6. Push bar lock; 7. Hinge; 8. Third fireproof expansion seal; 9. First fireproof expansion seal; 10. First door leaf; 11. Second fireproof expansion seal; 13. Second door leaf. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-5 The technical solution provided by this utility model specifically includes the following embodiments:

[0023] Example 1:

[0024] A double-leaf steel fire door includes a vertical frame 1, which is used to fix the fire door.

[0025] A horizontal frame 4 is fixed on one side of the vertical frame 1. The horizontal frame 4 is used to fix the fire door.

[0026] A horizontal stop 3 is fixedly provided at the bottom of the horizontal frame 4. The horizontal stop 3 is used to limit the fire door and prevent the spread of fire.

[0027] Vertical stop 2: A vertical stop 2 is fixedly provided on one side of the vertical frame 1. The vertical stop 2 is used to limit the fire door and prevent the spread of fire.

[0028] The vertical frame 1 is convex in shape. The convex shape structure is symmetrical, and the door frame is symmetrical front and back, which is beautiful. The hinge 7 is installed on the small end face of the convex shape, which can ensure that the first door leaf 10 and the second door leaf 13 open in opposite directions, and the two pairs of doors are flush after closing.

[0029] The horizontal frame 4 is a U-shaped structure without an opening. The purpose of this is to ensure that the first door leaf 10 and the second door leaf 13 can close smoothly. Since it is a double-opening, two-way fire door, the horizontal frame 4 is most suitable for an open structure, and the open structure is simple and aesthetically pleasing.

[0030] In this embodiment, there are two horizontal stops 3. The left horizontal stop 3 is located on the front surface of the left side of the horizontal frame 4, and the right horizontal stop 3 is located on the back surface of the right side of the horizontal frame 4. There are two horizontal stops 3. The left side of the left horizontal stop 3 is in contact with the right side of the left vertical stop 2, and the right side of the right horizontal stop 3 is in contact with the left side of the right vertical stop 2. Hinges 7 are fixedly installed on the back surface of the left vertical frame 1 and the front surface of the right vertical frame 1. The output end of the left hinge 7 is hinged to the first door leaf 10, and the output end of the right hinge 7 is hinged to the second door leaf 13.

[0031] The purpose of adding vertical frame 1 and vertical stop 2 is to ensure the fire resistance integrity of the gap between vertical frame 1 and the first door leaf 10 and the second door leaf 13, and to prevent fire from penetrating through the gap. The stop acts as a cover. The folded section on the stop ensures the gap between the first door leaf 10 and the second door leaf 13 and the stop. Since the thickness of the first door leaf 10 and the second door leaf 13 is the same as the width of the small side wall of the convex shape, the door cannot be closed without the folded section. After the folded section is made, the adhesive strip pasted at the folded section can achieve a better fire resistance effect. In addition, the installation position of the stop must be opposite to the opening direction of the first door leaf 10 and the second door leaf 13, otherwise the first door leaf 10 and the second door leaf 13 cannot be opened.

[0032] The horizontal stop 3 and the vertical stop 2 are located on the same side; otherwise, the first door leaf 10 and the second door leaf 13 cannot be opened. Using square tubes for direct fabrication is convenient and simple. This tube can be directly installed onto the horizontal frame 4, flush with the outer edge of the horizontal frame 4. After installation, the stop surface is flush with the door frame surface and the vertical stop 2 surface, which is aesthetically pleasing. In addition, one end of the square tube is welded to the side of the vertical stop 2 to ensure the overall strength of the stop. The width of the square tube is consistent with the thickness of the small surface at the step difference position of the vertical stop 2. After installation, the inner side of the stop is also flush, and there are no gaps when pasting the adhesive strip. It is aesthetically pleasing and has stable fire resistance.

[0033] The thickness of the first door leaf 10 and the second door leaf 13 is the same as the width of the small side wall of the U-shape. This makes the first door leaf 10 and the second door leaf 13 flush with the inner and outer raised surfaces of the door frame when closed, which is aesthetically pleasing. The first door leaf 10 and the second door leaf 13 adopt an integrated overlapping structure and are riveted together. There are no welding points, which is aesthetically pleasing. The adhesive strip in the groove not only ensures fire resistance but also covers the rivets, making it both beautiful and practical. The split cover plate 5 is used. The split cover plate 5 has high fire resistance. The push bar lock 6 with upper and lower insertion rods is installed. The push bar lock 6 only inserts into the upper and lower positions of the door frame and has no locking point in the middle. This allows the first door leaf 10 and the second door leaf 13 to be opened freely without the first door leaf 10 and the second door leaf 13 being unable to be opened due to the other door leaf.

[0034] Example 2:

[0035] Specifically, in this embodiment, push bar locks 6 are fixedly installed on the front surface of the first door leaf 10 and the back surface of the second door leaf 13. Split cover plates 5 are fixedly connected to the right side of the back surface of the first door leaf 10 and the left side of the front surface of the second door leaf 13. First fireproof expansion seals 9 are fixedly connected to the left and right sides of the first door leaf 10 and the left and right sides and the top side of the second door leaf 13. Second fireproof expansion seals 11 are fixedly connected to the back surface of the left vertical opening 2 and the front surface of the right vertical opening 2. Third fireproof expansion seals 8 are fixedly connected to the front surface of the left split cover plate 5, the back surface of the right split cover plate 5 and the back surface of the horizontal opening 3.

[0036] The split cover plate 5 is easy to install due to its split design. The third fireproof expansion sealant 8 can be attached to the difference position of the split cover plate 5 to ensure the sealing performance of the middle seam and increase the fire resistance stability of the middle seam. Since the horizontal stop 3 is not a whole but a split stop with one section inside and one section outside, the joint position, which is the middle seam of the first door leaf 10 and the second door leaf 13, is a dangerous point. After the first door leaf 10 and the second door leaf 13 are closed, the split cover plate 5 covers the middle seam, and its upper edge is exactly at the joint position of the two horizontal stops 3. Adding the third fireproof expansion sealant 8 to the upper edge can effectively ensure the safety of the dangerous point.

[0037] In this design, a double-leaf steel fire door has a vertical frame 1 in the shape of a convex character when in operation. The convex character structure is symmetrical, and the door frame is symmetrical front and back, which is aesthetically pleasing. The hinge 7 is installed on the small end face of the convex character, which ensures that the first door leaf 10 and the second door leaf 13 open in opposite directions and that the two double leaves are flush when the door is closed.

[0038] The horizontal frame 4 is a U-shaped structure without a cover. The purpose of this is to ensure that the first door leaf 10 and the second door leaf 13 can close smoothly. Since it is a double-opening, two-way fire door, the horizontal frame 4 is most suitable for a structure without a cover, and the processing of the uncovered structure is simple and aesthetically pleasing.

[0039] The purpose of adding vertical frame 1 and vertical stop 2 is to ensure the fire resistance integrity of the gap between vertical frame 1 and the first door leaf 10 and the second door leaf 13, and to prevent fire from penetrating through the gap. The stop acts as a cover. The folded section on the stop ensures the gap between the first door leaf 10 and the second door leaf 13 and the stop. Since the thickness of the first door leaf 10 and the second door leaf 13 is the same as the width of the small side wall of the convex shape, the door cannot be closed without the folded section. After the folded section is made, the adhesive strip pasted at the folded section can achieve a better fire resistance effect. In addition, the installation position of the stop must be opposite to the opening direction of the first door leaf 10 and the second door leaf 13, otherwise the first door leaf 10 and the second door leaf 13 cannot be opened.

[0040] The horizontal stop 3 and the vertical stop 2 are located on the same side; otherwise, the first door leaf 10 and the second door leaf 13 cannot be opened. Using square tubes for direct fabrication is convenient and simple. This tube can be directly installed onto the horizontal frame 4, flush with the outer edge of the horizontal frame 4. After installation, the stop surface is flush with the door frame surface and the vertical stop 2 surface, which is aesthetically pleasing. In addition, one end of the square tube is welded to the side of the vertical stop 2 to ensure the overall strength of the stop. The width of the square tube is consistent with the thickness of the small surface at the step difference position of the vertical stop 2. After installation, the inner side of the stop is also flush, and there are no gaps when pasting the adhesive strip. It is aesthetically pleasing and has stable fire resistance.

[0041] The thickness of the first door leaf 10 and the second door leaf 13 is the same as the width of the small side wall of the convex shape. In this way, when the first door leaf 10 and the second door leaf 13 are closed, they are flush with the inner and outer convex surfaces of the door frame, which is aesthetically pleasing. The first door leaf 10 and the second door leaf 13 adopt an integrated overlapping structure and are riveted together. There are no welding points, which is aesthetically pleasing. The adhesive strip in the groove not only ensures fire resistance but also covers the rivets, which is both beautiful and practical. The split cover plate 5 is used. The split cover plate 5 has high fire resistance. The push bar lock 6 with upper and lower insertion rods is installed. In this way, the push bar lock 6 only inserts into the upper and lower positions of the door frame and has no locking point in the middle. In this way, the first door leaf 10 and the second door leaf 13 can be opened freely without the first door leaf 10 and the second door leaf 13 being unable to be opened due to the other door.

[0042] The split cover plate 5 is easy to install due to its split design. The third fireproof expansion sealant 8 can be attached to the difference position of the split cover plate 5 to ensure the sealing performance of the middle seam and increase the fire resistance stability of the middle seam. Since the horizontal stop 3 is not a whole but a split stop with one section inside and one section outside, the joint position, which is the middle seam of the first door leaf 10 and the second door leaf 13, is a dangerous point. After the first door leaf 10 and the second door leaf 13 are closed, the split cover plate 5 covers the middle seam, and its upper edge is exactly at the joint position of the two horizontal stops 3. Adding the third fireproof expansion sealant 8 to the upper edge can effectively ensure the safety of the dangerous point.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A double-leaf steel fire door, characterized in that: Includes a vertical frame (1), which is used to fix the fire door; A horizontal frame (4) is fixedly provided on one side of the vertical frame (1), and the horizontal frame (4) is used to fix the fire door; A horizontal stop (3) is fixedly provided at the bottom of the horizontal frame (4). The horizontal stop (3) is used to limit the fire door and block the spread of fire. A vertical stop (2) is fixedly provided on one side of the vertical frame (1). The vertical stop (2) is used to limit the fire door and block the spread of fire.

2. A bidirectional double-leaf steel fire door according to claim 1, characterized in that: There are two horizontal stops (3). The left horizontal stop (3) is located on the front surface of the left side of the horizontal frame (4), and the right horizontal stop (3) is located on the back surface of the right side of the horizontal frame (4). There are two horizontal stops (3). The left side of the left horizontal stop (3) is in contact with the right side of the left vertical stop (2), and the right side of the right horizontal stop (3) is in contact with the left side of the right vertical stop (2). Hinges (7) are fixedly installed on the back surface of the left vertical frame (1) and the front surface of the right vertical frame (1). The output end of the left hinge (7) is hinged to the first door leaf (10), and the output end of the right hinge (7) is hinged to the second door leaf (13).

3. A bidirectional double-leaf steel fire door according to claim 2, characterized in that: Push bar locks (6) are fixedly installed on the front surface of the first door leaf (10) and the back surface of the second door leaf (13). Split cover plates (5) are fixedly connected to the right side of the back surface of the first door leaf (10) and the left side of the front surface of the second door leaf (13).

4. A bidirectional double-leaf steel fire door according to claim 3, characterized in that: The first fireproof expansion seal (9) is fixedly connected to the left and right sides of the first door leaf (10) and the left and right sides and the top of the second door leaf (13).

5. A bidirectional double-leaf steel fire door according to claim 2, characterized in that: The back surface of the vertical opening (2) on the left and the front surface of the vertical opening (2) on the right are both fixedly connected with a second fireproof expansion seal (11). The front surface of the split cover plate (5) on the left, the back surface of the split cover plate (5) on the right and the back surface of the horizontal opening (3) are all fixedly connected with a third fireproof expansion seal (8).

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