A60-class single-leaf steel door

Abstract

The present invention relates to a single-leaf steel door of Class A60, and the single-leaf steel door includes a door frame, a door panel, a Class A60 fire window, and a detachable threshold; the door panel is composed of an upper door panel and a lower door panel, and a Class A60 fire window is installed on the upper door panel; the door panel and the door frame are rotationally connected by a hinge device located on one side of the door frame, and the detachable threshold is fixed at the bottom of the door frame; a surrounding plate is welded along the circumference of the door panel, an inner sealing plate is installed on the inner side of the door panel, a handle device is installed on the door panel, and the handle device is connected to a linkage pressing device; two toggle nut locking devices are installed on the lower door panel. It meets the requirements of a single-leaf steel door of Class A60 for fire resistance, meets the requirements of limited outdoor space and maximizes the utilization of outdoor space, meets the requirement of using without a threshold in special areas, and the structural form is an embedded "zero threshold".

Description

Technical Field

[0001] The present invention belongs to the technical field of ship outfitting, and particularly relates to a Class A60 single-leaf steel door. Background Art

[0002] With the development of the ship industry, customers have higher and higher requirements for ship outfitting supporting equipment. In the existing technology, a Class A60 single-leaf steel door mainly consists of a door frame, a door leaf, a round window (with a small light-transmitting size), a hinge device, a pressing device, etc. connected together. The conventional structure of the external-opening door frame protrudes on the outdoor side. When the door is closed, the door leaf and the external handle occupy a relatively large space on the outdoor side, resulting in a reduction in the effective usable space on the outdoor side. For areas with limited outdoor space, especially when the outdoor is a passage, the limited usable space on the outside should be maximized, but the conventional door frame cannot meet the usage requirements. In addition, according to the specification requirements, the threshold height is usually between 250 and 600 mm. For special use areas that need to move heavy and precision equipment, the high threshold becomes the biggest obstacle while meeting the specifications. Therefore, the original Class A60 single-leaf steel door can no longer meet the needs of customers under the new situation. Summary of the Invention

[0003] The purpose of the present invention is to fill the deficiencies in the existing technical standards and provide a new type of marine Class A60 single-leaf steel door with an embedded "zero-threshold" structural form.

[0004] Specifically, a Class A60 single-leaf steel door,

[0005] The single-leaf steel door includes a door frame, a door panel, a Class A60 fireproof window, and a removable threshold;

[0006] The door panel is composed of an upper door panel and a lower door panel, and a Class A60 fireproof window is installed on the upper door panel;

[0007] The door panel and the door frame are rotatably connected through a hinge device located on one side of the door frame, and a removable threshold is fixed at the bottom of the door frame;

[0008] A surrounding plate is welded along the circumference of the door panel, and a fireproof rubber strip and a flame-retardant sealing strip are installed in the groove formed between the edge of the surrounding plate and the door panel;

[0009] An inner sealing plate is installed on the inner side of the door panel, and the inner sealing plate is fixed on the surrounding plate, and fireproof filler is arranged between the door panel and the inner sealing plate:

[0010] A handle device is installed on the door panel, and the handle device is connected to a linkage pressing device;

[0011] Two toggle nut locking devices are installed on the lower door panel.

[0012] Further, inclined wedge holes are formed in the door frame, and the positions and quantities of the inclined wedge holes correspond to the buckle fasteners one by one. The structural form of the door frame is recessed on the indoor side, and when the door is closed, the door leaf is flush with the door frame to form an embedded structure.

[0013] Further, the Class A60 fireproof window includes a first window frame welded to the upper door panel. A positioning ring and an inorganic fireproof board are arranged between the first window frame and the second window frame and fixed by inner hexagon socket head cap screws. Fireproof rubber strips are arranged inside and outside when installing the fireproof glass. Ceramic wool is filled between the fireproof glass and the first window frame. The window pressing plate is fixed to the window opening by screws, and the window sash is fixed to the inner sealing plate by screws.

[0014] Further, the hinge device includes a straight-through grease cup, a hinge seat and a hinge plate. The hinge seat is welded to the door frame, the hinge plate is welded to the door panel, and the hinge seat and the hinge plate are connected by a pin shaft, a washer and a slotted set screw. A straight-through grease cup is arranged on the pin shaft.

[0015] Further, the linkage pressing device includes an upper and lower linkage rod, a corner seat, a corner connecting plate, a left and right linkage rod, a buckle fastener and a buckle seat;

[0016] The buckle fastener is installed on the buckle seat and fixed by a self-locking nut. A self-lubricating bearing and a spring are arranged inside the buckle fastener. The buckle fastener is connected to the upper and lower linkage rods and the left and right linkage rods through a second pin shaft, a bushing, an open pin and a gasket. The upper and lower linkage rods and the left and right linkage rods are connected to the corner connecting plate through a first pin shaft, an open pin and a gasket. The corner connecting plate is installed on the corner seat.

[0017] Further, the handle device includes an inner handle, a connecting plate, a sleeve and an outer handle;

[0018] Among them, the handle device and the linkage pressing device are connected by a pin shaft through the connecting plate;

[0019] The sleeve is welded to the upper door panel. The sleeve is equipped with a self-lubricating bearing. The outer handle is assembled in the middle of the sleeve and fixed to the inner handle by screws. To ensure tightness, two O-ring rubber seals are arranged between the outer handle and the sleeve. The decorative ring is fixed to the sealing plate by screws.

[0020] Further, the detachable threshold is fixed to the bottom of the door frame by inner hexagon socket head cap screws, and the threshold is equipped with a fireproof and watertight rubber strip.

[0021] The beneficial effects of the present invention are as follows:

[0022] The structure of the present invention is novel, compact, reasonable and beautiful. The embedded door frame is suitable for areas where the outside is a passage or the external space is compact. The "zero threshold" structural form is suitable for special use areas that require moving heavy and precision equipment; it has better sound insulation and heat insulation functions, and is safely fixed to the steel wall by a door hook device after being opened. Brief Description of the Drawings

[0023] Figure 1 This is the front view of the present invention.

[0024] Figure 2 This is the top view of the present invention.

[0025] Figure 3 This is the left view of the present invention.

[0026] Figure 4 Figure 2 The enlarged view at position A in

[0027] Figure 5 This is the front view of the embedded door frame of the present invention.

[0028] Figure 6 This is the top view of the embedded door frame of the present invention.

[0029] Figure 7 This is the left view of the embedded door frame of the present invention.

[0030] Figure 8 is Figure 7 The partial enlarged view at position I in

[0031] Figure 9 of the present invention Figure 6 The partial enlarged view at position II in

[0032] Figure 10 of the present invention Figure 7 The partial enlarged view at position III in

[0033] Figure 11 of the present invention Figure 5 The partial enlarged view at position IV in

[0034] Figure 12 This is the schematic diagram of the upper door panel of the present invention.

[0035] Figure 13 This is the schematic diagram of the lower door panel of the present invention.

[0036] Figure 14 This is the drawing of the A60 fireproof window of the present invention.

[0037] Figure 15 This is the front view of the hinge device of the present invention.

[0038] Figure 16 This is the top view of the hinge device of the present invention.

[0039] Figure 17 This is the front view of the linkage pressing device.

[0040] Figure 18 This is the top view of the linkage pressing device.

[0041] Figure 19 This is a diagram of the handle device of the present invention. Detailed implementation manners

[0042] The present invention will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0043] An A60-class single-leaf steel door, as Figure 1-19 shown, the single-leaf steel door includes a door frame 1, a door panel 2, an A60-class fireproof window 3, and a detachable threshold 13;

[0044] The door panel 2 is composed of an upper door panel 2-1 and a lower door panel 2-2, and an A60-class fireproof window 3 is installed on the upper door panel 2-1;

[0045] The door panel 2 and the door frame 3 are rotatably connected through a hinge device 4 on one side of the door frame 1, and the detachable threshold 13 is fixed at the bottom of the door frame 1 through through-hole socket head cap screws;

[0046] A surrounding plate 18 is welded along the circumference of the door panel 2, and a fireproof rubber strip 11 and a flame-retardant sealing strip 12 are installed in the groove formed between the edge of the surrounding plate and the door panel 2;

[0047] An inner sealing plate 8 is installed on the inner side of the door panel 2, the inner sealing plate 8 is fixed on the surrounding plate, and a fireproof filler is provided between the door panel 2 and the inner sealing plate 8:

[0048] 6-mm thick inorganic fireproof board 9 + ceramic wool 7 + 6-mm thick inorganic fireproof board 9, and the total thickness of the door panel is 96 mm;

[0049] A handle device 6 is installed on the door panel 2-1, and the handle device 6 is connected to a linkage pressing device 5;

[0050] Two toggle nut locking devices are installed on the lower door panel 2-2, and the lower door panel is locked through toggle nuts;

[0051] A bevel key hole is opened on the door frame 1, and the position and number of the bevel key holes correspond to those of the buckle 5-11 one by one. The structure form of the door frame is different from the conventional door frame structure form. The conventional external-opening door frame structure form protrudes on the outdoor side. When the door is closed, the door leaf and the external handle occupy a relatively large space on the outdoor side, resulting in a reduction in the effective utilization space on the outdoor side. For limited outdoor space, especially when the outdoor side is a passage, the limited utilization space on the outside should be maximized. Obviously, the conventional door frame cannot meet the usage requirements. The structure form of the door frame is recessed on the indoor side. When the door is closed, the door leaf and the external handle occupy a very small space on the outdoor side, maximizing the effective utilization space on the outdoor side. The effect is most obvious when the outdoor side is a passage. When the door is closed, the door leaf is flush with the door frame to form an embedded structure.

[0052] The Class A60 fireproof window 3 includes a first window frame 3-1 welded to the upper door panel 2-1. A positioning ring 3-2 and an inorganic fireproof board 3-4 are arranged between the first window frame 3-1 and the second window frame 3-5 and fixed by hexagon socket head cap screws 3-3. Fireproof rubber strips 3-6 are arranged inside and outside when the fireproof glass 3-7 is installed. Ceramic wool 3-10 is filled between the fireproof glass 3-7 and the first window frame 3-1. The window pressing plate 3-8 is fixed to the window opening 23-5 by screws 3-11. The window bucket is fixed to the inner sealing plate 8 by screws 3-11.

[0053] The hinge device 4 includes a straight-through grease cup 4-1, a hinge seat 4-3 and a hinge plate 4-5. The hinge seat 4-3 is welded to the door frame 1, and the hinge plate 4-5 is welded to the door panel 2. The hinge seat 4-3 and the hinge plate 4-5 are connected by a pin shaft 4-2, a washer 4-4 and a slotted set screw 4-6. A straight-through grease cup 4-1 is arranged on the pin shaft 4-2.

[0054] The linkage pressing device 5 includes an upper and lower linkage rod 5-1, a corner seat 5-2, a corner connecting plate 5-3, a left and right linkage rod 5-6, a buckle 5-11 and a buckle seat 5-10;

[0055] The buckle 5-11 is installed on the buckle seat 5-10 and fixed by a self-locking nut 5-14. A self-lubricating bearing 5-12 and a spring 5-13 are arranged inside the buckle 5-11. The buckle 5-11 is connected to the upper and lower linkage rod 5-1 and the left and right linkage rod 5-6 through a second pin shaft 5-8, a bushing 5-9, an open pin 5-7 and a gasket 5-5. The upper and lower linkage rod 5-1 and the left and right linkage rod 5-6 are connected to the corner connecting plate 5-3 through a first pin shaft 5-3, an open pin 5-7 and a gasket 5-5. The corner connecting plate 5-3 is installed on the corner seat 5-2.

[0056] The handle device 6 includes an inner handle 6-1, a connecting plate 6-5, a sleeve 6-7 and an outer handle 6-9;

[0057] Among them, the handle device 6 and the linkage pressing device 5 are connected by a pin shaft through the connecting plate 6-5;

[0058] The sleeve 6-7 is welded to the upper door panel 2-1. The sleeve 6-7 is equipped with a self-lubricating bearing 6-6. The outer handle 6-9 is assembled in the middle of the sleeve 6-7 and connected and fixed to the inner handle 6-1 by a screw 6-4. To ensure tightness, two O-ring rubber seals 6-8 are arranged between the outer handle 6-9 and the sleeve 6-7. The decorative ring 6-2 is fixed to the sealing plate 8 by a screw 6-3.

[0059] The detachable threshold 13 is fixed to the bottom of the door frame 1 by hexagon socket head cap screws 13-2. The threshold 13-1 is equipped with a fireproof and watertight rubber strip 13-3.

[0060] Usage process and principle of the present invention: The present invention is welded to the A-class bulkhead hull, applicable to the bulkhead of the deck cabin with a fire protection rating of A60, applicable to areas where the exterior is a passage or an area with a compact exterior space. The "zero-threshold" structural form is applicable to special areas where heavy equipment needs to be moved. During actual use, the lower door panel and the removable threshold should be in the normally closed state. The opening sequence is the upper door panel → the lower door panel → the removable threshold, and the closing sequence is the opposite.

[0061] When a fire breaks out, the temperature rise on the fire-facing side of the watertight door of the present invention can reach 945°C and burn for 1 hour, and the temperature rise on the back fire-facing side is slightly higher than the normal temperature rise. The basic principle is to use the fireproof rubber strip to expand when encountering fire to prevent smoke and fire. At the same time, a fireproof layer composed of inorganic fireproof board, ceramic wool and fireproof liquid in the fireproof glass is used for heat insulation and flame retardancy, so as to prevent the passage of air, smoke and fire. It achieves the functions of fire resistance, sound insulation and watertightness.

[0062] The watertight door of the present invention has passed the on-site watertight 0.1MPa certification by the ship surveyors of DNV (DET NORSKE VERITAS, Norwegian Classification Society), ABS (American Bureau of Shipping) and CCS (China Classification Society) and has been sealed as a sample. It was successfully tested by burning in the Shanghai Far East Fireproof Test Center in March 2017.

[0063] Finally, it should be noted that the above specific implementation manners are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A60-class single-leaf steel door, characterized in that, the single-leaf steel door includes a door frame (1), a door panel (2), an A60-class fire window (3) and a detachable threshold (13); the door panel (2) is composed of an upper door panel (2-1) and a lower door panel (2-2), and an A60-class fire window (3) is installed on the upper door panel (2-1); the door panel (2) and the door frame (1) are rotationally connected through a hinge device (4) located on one side of the door frame (1), and a detachable threshold (13) is fixed at the bottom of the door frame (1); a surrounding plate (18) is welded along the circumference of the door panel (2), and a first fireproof rubber strip (11) and a flame-retardant sealing strip (12) are installed in the groove formed between the surrounding plate and the edge of the door panel (2); an inner sealing plate (8) is installed on the inner side of the door panel (2), the inner sealing plate (8) is fixed on the surrounding plate, and fireproof filler is arranged between the door panel (2) and the inner sealing plate (8); a handle device (6) is installed on the upper door panel (2-1), and the handle device (6) is connected to a linkage pressing device (5); two toggle nut locking devices are installed on the lower door panel (2-2); a bevel key hole (1-1) is opened on the door frame (1), the position and quantity of the bevel key holes correspond to the buckle (5-11) one by one, the door frame is recessed on the indoor side, and when the door is closed, the door leaf is flush with the door frame to form an embedded structure; the A60-class fire window (3) includes a first window frame (3-1) welded on the upper door panel (2-1), a positioning ring (3-2) and an inorganic fireproof board (3-4) are arranged between the first window frame (3-1) and the second window frame (3-5) and fixed by a first hexagon socket head cap screw (3-3), when the fireproof glass (3-7) is installed, a second fireproof rubber strip (3-6) is arranged inside and outside, ceramic wool (3-10) is filled between the fireproof glass (3-7) and the first window frame (3-1), the window pressing plate (3-8) is fixed to the second window frame (3-5) by a first screw (3-11), and the window bucket is fixed to the inner sealing plate (8) by a first screw (3-11); the hinge device (4) includes a straight-through grease cup (4-1), a hinge seat (4-3) and a hinge plate (4-5), the hinge seat (4-3) is welded on the door frame (1), the hinge plate (4-5) is welded on the door panel (2), the hinge seat (4-3) and the hinge plate (4-5) are connected by a third pin shaft (4-2), a washer (4-4) and a slotted set screw (4-6), and a straight-through grease cup (4-1) is arranged on the third pin shaft (4-2); the linkage pressing device (5) includes an upper and lower linkage rod (5-1), a corner seat (5-2), a corner connecting plate (5-3), a left and right linkage rod (5-6), a buckle (5-11) and a buckle seat (5-10); The buckle (5-11) is installed on the buckle seat (5-10) and fixed by a self-locking nut (5-14). The buckle (5-11) is internally equipped with a first self-lubricating bearing (5-12) and a spring (5-13). The buckle (5-11) is connected to the upper and lower linkage rods (5-1) and the left and right linkage rods (5-6) through a second pin shaft (5-8), a bushing (5-9), a split pin (5-7) and a gasket (5-5). The upper and lower linkage rods (5-1) and the left and right linkage rods (5-6) are connected to the corner connection plate (5-3) through a first pin shaft, a split pin (5-7) and a gasket (5-5). The corner connection plate (5-3) is installed on the corner seat (5-2). The handle device (6) includes an inner handle (6-1), a connection plate (6-5), a sleeve (6-7) and an outer handle (6-9). Among them, the handle device (6) and the linkage pressing device (5) are connected by a pin shaft through the connection plate (6-5). The sleeve (6-7) is welded to the upper door panel (2-1). The sleeve (6-7) is equipped with a second self-lubricating bearing (6-6). The outer handle (6-9) is assembled in the middle of the sleeve (6-7) and is connected and fixed to the inner handle (6-1) by a third screw (6-4). To ensure tightness, two O-ring rubber seals (6-8) are provided directly between the outer handle (6-9) and the sleeve (6-7). The decorative ring (6-2) is fixed to the inner sealing plate (8) by a second screw (6-3).

2. An A60-class single-leaf steel door according to claim 1, characterized in that: The detachable threshold (13) is fixed to the bottom of the door frame (1) by a second inner hexagon socket head screw (13-2). A fire and watertight rubber strip (13-3) is installed on the threshold body (13-1).

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