Steel fireproof door

Abstract

The utility model discloses a steel fireproof door which comprises a door frame, a fireproof door body, a single door opening mechanism and a door opening and closing mechanism, through the arrangement of the single door opening mechanism, connecting rods are driven by a movable rod to enable the fireproof door body to slide towards the right side, and a connecting strip is arranged between the two connecting rods. The motion trail of the fireproof door can be kept consistent in the opening or closing process; by arranging the door opening and closing mechanism, a person holds a fixing block to press the fixing block downwards, so that a rotating block drives a second movable strip to swing clockwise, the second movable strip drives a bolt strip to move outwards, the bolt strip is inserted into a notch of a door frame, the fireproof door and the door frame are fixed, and the fireproof door cannot be easily opened in daily life; and the fireproof and smoke-proof effects are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a steel fireproof door. Background Art

[0002] Fire doors are used to maintain the fire resistance integrity of fire escape passages and provide escape routes. Their purpose is to ensure that people escaping in the fire escape passages are protected from the threat of fire within a safe escape time, including blocking thick smoke and heat.

[0003] When optimizing existing steel fire door equipment, most of the improvements are reflected in the effect of the device on reinforcing the door frame. For example, the Chinese utility model patent with publication number CN201821101268.4 discloses a "steel fire door". The utility model patent comprises a fixed frame, a door frame and a door leaf hinged on the door frame. The door leaf is a hollow structure filled with a flame retardant core. A fixed frame is also provided in the door leaf. The fixed frame comprises a first fixed plate and a second fixed plate. The first fixed plate comprises a vertical fixed horizontal plate and a vertical plate. The second fixed plate has the same structure as the first fixed plate, and the first fixed plate and the second fixed plate are centrally symmetrically arranged. The vertical plate of the first fixed plate is vertically fixed to the inner side surface of the door leaf, and the second fixed plate is fixed to the opposite side of the door leaf and the first fixed plate. The horizontal plate of the first fixed plate is arranged in conflict with the horizontal plate of the second fixed plate, thereby improving the safety of the fire door.

[0004] Although the above method has certain advantages in terms of improvement, it still has certain disadvantages: if there is no locking mechanism, the fire door can be easily opened in daily life, resulting in a significant reduction in the fire and smoke prevention effects. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a steel fireproof door to solve the above-mentioned problems.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a steel fire door, including a door frame, a fire door, a single-opening door mechanism and a door opening and closing mechanism, the fire door and the door frame are movably coordinated, the door opening and closing mechanism is installed in the middle of the rear end of the fire door, and the single-opening door mechanism is installed on the upper and lower sides of the door frame; the single-opening door mechanism includes a movable rod, a connecting rod and a connecting strip, the movable rod is connected to the door frame, the right end of the connecting rod is hingedly connected to the lower end of the movable rod, and the connecting strip is fixedly connected to the connecting rod.

[0009] Preferably, the door opening and closing mechanism includes a fixed block, a rotating block, a movable bar 2, a latch bar and a fixed block 2, the left end of the fixed block is fixedly connected to the right end of the rotating block, one side end of the movable bar 2 is hingedly connected to the rotating block, one side end of the latch bar is hingedly connected to one side end of the movable bar 2, the latch bar passes through the middle of the fixed block 2, and the fixed block 2 is fixedly installed at the rear of the fire door.

[0010] Preferably, the single-door mechanism is provided with two respectively mounted on the inner upper part and the inner lower part of the door frame.

[0011] Preferably, circular notches are provided at the upper and lower ends of the middle portion of the door frame.

[0012] Preferably, the second movable bar is arranged in an arc shape.

[0013] Preferably, the movable bar 2 and the latch bar are provided with two upper and lower ends installed at the rotating block.

[0014] Preferably, the connecting rod is made of cast steel, which has the characteristics of high strength and high toughness.

[0015] Preferably, the latch bar is made of steel, which has the characteristics of high strength, good rigidity and strong wear resistance.

[0016] (III) Beneficial effects

[0017] The utility model provides a steel fire door, which has the following beneficial effects: by setting a single door opening mechanism, the connecting rod is driven by the movable rod to make the fire door slide to the right, and a connecting strip is provided in the middle of the two connecting rods, so that the fire door can keep the same movement trajectory during opening or closing.

[0018] The utility model provides a steel fire door. It has the following beneficial effects: by setting a door opening and closing mechanism, a person holds a fixed block and presses the fixed block downward, so that the rotating block drives the second movable bar to swing clockwise, and the second movable bar drives the latch bar to move outward, so that the latch bar is inserted into the notch of the door frame, and the fire door and the door frame are fixed, so that the fire door will not be easily opened in daily life, resulting in a significant reduction in the fire and smoke prevention effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural diagram of the steel fire door of the utility model;

[0020] Figure 2 This is a rear structural schematic diagram of the utility model steel fire door;

[0021] Figure 3 It is a top view structural schematic diagram of the single door mechanism of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the single door opening mechanism of the utility model;

[0023] Figure 5 It is a schematic diagram of the planar structure of the door opening and closing mechanism of the utility model.

[0024] In the figure: door frame 1, fire door 2, single door opening mechanism 3, door opening and closing mechanism 4, movable rod 31, connecting rod 32, connecting strip 33, fixed block 41, rotating block 42, movable strip 2 43, latch strip 44, fixed block 2 45. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-2 The utility model provides a technical solution for a steel fire door: a steel fire door, comprising a door frame 1, a fire door 2, a single door opening mechanism 3 and a door opening and closing mechanism 4. The fire door 2 is movably matched with the door frame 1, the door opening and closing mechanism 4 is installed in the middle of the rear end of the fire door 2, and the single door opening mechanism 3 is installed on the upper and lower sides of the door frame 1; the single door mechanism 3 is provided with two respectively installed on the inner upper and lower parts of the door frame 1 so that the fire door 1 keeps a uniform movement trajectory during the movement; circular notches are provided at the upper and lower ends of the middle part of the door frame 1 to facilitate the fixing of the latch strip 44.

[0027] See also Figure 3-4 The utility model provides a technical solution for a steel fire door: a steel fire door, including a single-opening mechanism 3 including a movable rod 31, a connecting rod 32 and a connecting strip 33. The movable rod 31 is connected to the door frame 1, the right end of the connecting rod 32 is hingedly connected to the lower end of the movable rod 31, and the connecting strip 33 is fixedly connected to the connecting rod 32; the connecting rod 32 is made of cast steel and has the characteristics of high strength and high toughness.

[0028] See also Figure 5The utility model provides a technical solution for a steel fire door: a steel fire door, comprising a door opening and closing mechanism 4 including a fixed block 41, a rotating block 42, a movable bar 43, a latch bar 44 and a fixed block 45, the left end of the fixed block 41 is fixedly connected to the right end of the rotating block 42, one side end of the movable bar 43 is hingedly connected to the rotating block 42, one side end of the latch bar 44 is hingedly connected to one side end of the movable bar 43, the latch bar 44 passes through the middle of the fixed block 45, and the fixed block 45 is fixedly installed at the rear of the fire door 2; the movable bar 43 is arranged in an arc shape, which is convenient for driving the latch bar 44 to move; the movable bar 43 and the latch bar 44 are provided with two upper and lower ends installed at the rotating block 42; the latch bar 44 is made of steel, which has the characteristics of high strength, good rigidity and strong wear resistance.

[0029] The working principle is as follows: a person pulls the fire door 2 to the right, and the connecting rod 32 is driven by the movable rod 31 to slide the fire door 2 to the right, and a connecting strip 33 is provided in the middle of the two connecting rods 32, so that the fire door 2 can maintain a consistent movement trajectory during the opening or closing process; when the fire door 2 is connected to the side wall of the door frame 1, a person holds the fixed block 41 and presses the fixed block 41 downward, so that the rotating block 42 drives the movable strip 2 43 to swing clockwise, and the movable strip 2 43 drives the latch strip 44 to move outward, so that the latch strip 44 is inserted into the notch of the door frame 1, which has a fixing effect on the fire door 2 and the door frame 1, so that the fire door 2 will not be easily opened in daily life, resulting in a greatly reduced fire and smoke prevention effect.

[0030] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0031] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel fire door, comprising a door frame (1), a fire door (2) and a door opening and closing mechanism (4), wherein the fire door (2) is movably matched with the door frame (1), and the door opening and closing mechanism (4) is installed at the middle of the rear end of the fire door (2); Features: The invention also comprises a single-opening door mechanism (3), wherein the single-opening door mechanism (3) is installed on the upper and lower sides of the door frame (1), and the single-opening door mechanism (3) comprises a movable rod (31), a connecting rod (32) and a connecting strip (33), wherein the movable rod (31) is connected to the door frame (1), the right end of the connecting rod (32) is hingedly connected to the lower end of the movable rod (31), and the connecting strip (33) is fixedly connected to the connecting rod (32).

2. A steel fire door according to claim 1, characterized in that: The door opening and closing mechanism (4) comprises a fixed block (41), a rotating block (42), a movable bar (43), a latch bar (44) and a fixed block (45); the left end of the fixed block (41) is fixedly connected to the right end of the rotating block (42); one side end of the movable bar (43) is hingedly connected to the rotating block (42); one side end of the latch bar (44) is hingedly connected to one side end of the movable bar (43); the latch bar (44) passes through the middle of the fixed block (45); and the fixed block (45) is fixedly installed at the rear of the fire door (2).

3. A steel fire door according to claim 1, characterized in that: The single-door opening mechanism (3) is provided with two parts which are respectively installed on the inner upper part and the inner lower part of the door frame (1).

4. A steel fire door according to claim 1, characterized in that: Circular notches are provided at the upper and lower ends of the middle part of the door frame (1).

5. A steel fire door according to claim 2, characterized in that: The second movable bar (43) is arranged in an arc shape.

6. A steel fire door according to claim 2, characterized in that: The movable bar 2 (43) and the latch bar (44) are provided with two upper and lower ends mounted on the rotating block (42).

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