Four-hour steel heat insulation fireproof door

Abstract

The utility model provides a four-hour steel heat insulation fireproof door which comprises a fireproof door frame and a fireproof door leaf, a door cavity is formed in the right side in the fireproof door frame, sliding ways are arranged at the top end and the bottom end of the fireproof door frame, the fireproof door leaf is arranged on the sliding ways in a sliding mode, a door groove is formed in the inner wall of the left end of the fireproof door frame, and driving sliding grooves are formed in the top end and the bottom end of the fireproof door frame respectively. A lead screw is arranged in the driving sliding groove, a sliding block is arranged in the driving sliding groove in a sliding mode, the sliding block is provided with a threaded hole matched with the lead screw, the sliding block is sleeved on the lead screw through the threaded hole, the fireproof door leaf is connected with the sliding block, a driving shaft rod is arranged in the door cavity, the upper end and the lower end of the driving shaft rod are respectively provided with a first bevel gear, and the lead screw is provided with a second bevel gear. The second bevel gear is meshed with the first bevel gear, and the top end of the driving shaft penetrates out of the fireproof door frame and is connected with a driving motor. Automatic opening and closing of the fireproof door leaf are achieved, and a good smoke isolation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a 4-hour steel heat-insulating fireproof door. Background Art

[0002] Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are fireproof partitions with certain fire resistance, such as those installed between fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the functions of ordinary doors, fire doors also have the function of preventing the spread of fire and smoke, and can prevent the spread of fire within a certain period of time to ensure the evacuation of personnel. In the Chinese utility model with the publication number of CN214787013U and the patent name of "Steel Profile Large Glass Fire Door", the fire door body is automatically opened by setting a sprocket mechanism to drive the chain to reel in. However, when closing the fire door, the fire door body needs to be manually pushed to close. Since the fire door body is relatively heavy, the closing process is very inconvenient, which causes troubles in daily use. At the same time, if a fire occurs, closing the fire door will consume precious escape time. If it is not closed, the fire can spread from the fire door, and the fire prevention effect will be lost, which will bring serious consequences. Utility Model Content

[0003] The utility model aims to provide a 4-hour steel heat-insulating fireproof door to solve the problems raised in the background technology.

[0004] The embodiment of the utility model is realized by the following technical scheme: a 4-hour steel insulated fire door, comprising a fire door frame and a fire door leaf, a door cavity is arranged on the right side of the fire door frame, slideways are arranged on the top and bottom of the fire door frame, the fire door leaf is slidably arranged on the slideway, a door groove is arranged on the inner wall of the left end of the fire door frame, and the left end of the fire door body can be inserted into the door groove,

[0005] The top and bottom ends of the fireproof door frame are also respectively provided with driving slide grooves, which are connected with adjacent slideways, a screw rod is horizontally arranged in the driving slide groove, a slider is slidably arranged in the driving slide groove, the slider is provided with a threaded hole matching the screw rod, the slider is sleeved on the screw rod through the threaded hole, the fireproof door leaf is connected to the slider, a driving shaft is arranged in the door cavity, the upper and lower ends of the driving shaft are respectively inserted into the driving slide groove, the upper and lower ends of the driving shaft are respectively provided with first bevel gears, the end of the screw rod close to the driving shaft is provided with a second bevel gear, the second bevel gear is meshed with the first bevel gear, and the top end of the driving shaft passes through the fireproof door frame and is connected to a driving motor.

[0006] The door cavity is equipped with a pair of limit vertical plates, which are symmetrically arranged on both sides of the door cavity. The limit vertical plates are slidingly connected to the surface of the fire door frame. The right end of the fire door leaf is equipped with a limit strip block, and the limit vertical plate is equipped with a fire-proof expansion sealing strip. When the left end of the fire door leaf is inserted into the door groove, the limit strip block presses the fire-proof expansion sealing strip.

[0007] The limiting vertical plate is provided with a plug-in slot, the limiting strip block comprises a connecting plate and a plug-in plate, the connecting plate is connected to the fireproof door leaf, the plug-in plate matches the plug-in slot, and fireproof expansion sealing strips are provided on both sides of the inner wall of the plug-in slot.

[0008] The end of the plug board is a pointed end.

[0009] The end surface of the slideway close to the fireproof door leaf is provided with a sealing pad, and the upper and lower end surfaces of the fireproof door leaf are slidably connected with the sealing pad.

[0010] A fireproof sealing strip is arranged in the door groove.

[0011] Screw rod supports are arranged at both ends of the screw rod.

[0012] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0013] (1) The utility model realizes the closing and opening of the fireproof door leaf by configuring a screw rod, a driving shaft rod and a slider. The rotation of the driving motor drives the driving shaft rod to rotate, thereby the first bevel gear rotates and drives the second bevel gear to rotate, thereby the screw rod rotates. Under the action of the threads of the screw rod and the slider, the slider moves along the driving slide groove, and through the forward or reverse rotation of the driving motor, the fireproof door leaf is driven to move to the left to close, or to move to the right into the door cavity to open. Through the threaded transmission between the screw rod and the slider, it has high stability and a low failure rate.

[0014] (2) The utility model increases the sealing performance of the fire door leaf when it is closed by configuring a limit vertical plate and a limit strip. When the fire door leaf is closed, the limit strip contacts the limit vertical plate, pressing the fire expansion sealing strip, thereby improving the sealing effect of the connection between the fire door leaf and the door cavity. When a fire occurs, the fire expansion sealing strip expands to prevent smoke from spreading.

[0015] (3) The utility model configures a plug-in slot and a plug-in plate. When the fire door leaf is closed, the plug-in plate is inserted into the plug-in slot. At the same time, the plug-in plate squeezes the expansion sealing strips on both sides to form a seal, thereby improving the fireproof performance and also improving the stability of the fire door leaf when the fire door leaf is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0020] Icons: 1-fireproof door frame, 11-door groove, 110-fireproof sealing strip, 2-fireproof door leaf, 21-limiting strip, 211-connecting plate, 212-plug-in plate, 3-door cavity, 31-limiting vertical plate, 310-plug-in groove, 32-fireproof expansion sealing strip, 4-slide, 41-sealing pad, 50-driving slide, 51-screw, 510-second bevel gear, 52-slider, 53-driving shaft, 530-first bevel gear, 54-driving motor, 55-screw support. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1

[0027] Please refer to Figures 1 to 3, the present embodiment provides a 4-hour steel insulated fire door, including a fire door frame 1 and a fire door leaf 2, a door cavity 3 is provided on the right side of the fire door frame 1, slideways 4 are provided at the top and bottom of the fire door frame 1, the fire door leaf 2 is slidably arranged on the slideway 4, a door groove 11 is provided on the inner wall of the left end of the fire door frame 1, and the left end of the fire door body can be inserted into the door groove 11, and the top and bottom ends of the fire door frame 1 are also respectively provided with driving slide grooves 50, which are connected to the adjacent slideways 4, a screw rod 51 is horizontally arranged in the driving slide groove 50, and a slider 52 is slidably arranged in the driving slide groove 50, and the slider 52 is provided with a threaded hole matching the screw rod 51, and the slider 52 is sleeved on the screw rod 51 through the threaded hole, and the fire door leaf 2 is connected to the slider 52, and a driving shaft rod 53 is arranged in the door cavity 3, and the upper and lower ends of the driving shaft rod 53 are respectively inserted into the driving slide groove 50, and the upper and lower ends of the driving shaft rod 53 are respectively inserted into the driving slide groove 50. The first bevel gear 530 is respectively arranged at the lower two ends, and the second bevel gear 510 is arranged at the end of the screw rod 51 close to the driving shaft 53, and the second bevel gear 510 is meshed with the first bevel gear 530. The top end of the driving shaft passes through the fire door frame 1 and is connected to the driving motor 54; the closing and opening of the fire door leaf 2 are realized by configuring the screw rod 51, the driving shaft 53 and the slider 52. The rotation of the driving motor 54 drives the driving shaft 53 to rotate, so that the rotation of the first bevel gear 530 drives the second bevel gear 510 to rotate, so that the screw rod 51 rotates. Under the action of the threads of the screw rod 51 and the slider 52, the slider 52 moves along the driving slide groove 50, and through the forward or reverse rotation of the driving motor 54, the fire door leaf 2 is driven to move to the left to close, or to move to the right into the door cavity 3 to open. Through the threaded transmission between the screw rod 51 and the slider 52, it has high stability and low failure rate.

[0028] In this embodiment, the door cavity 3 is further provided with a pair of limiting vertical plates 31, which are symmetrically arranged on both sides of the door cavity 3, and the limiting vertical plates 31 are slidably connected with the surface of the fire door frame 1, and the right end of the fire door leaf 2 is provided with a limiting strip 21, and the limiting vertical plates 31 are provided with a fire expansion sealing strip 32. When the left end of the fire door leaf 2 is inserted into the door groove 11, the limiting strip 21 presses the fire expansion sealing strip 32. By configuring the limiting vertical plates 31 and the limiting strip 21, the sealing performance of the fire door leaf 2 when it is closed is increased. When the fire door leaf 2 is closed, the limiting strip 21 contacts the limiting vertical plates 31, and presses the fire expansion sealing strip 32, thereby improving the sealing effect of the connection between the fire door leaf 2 and the door cavity 3. When a fire occurs, the fire expansion sealing strip 32 expands to prevent smoke from spreading.

[0029] In this embodiment, the limiting vertical plate 31 is further provided with a plug-in slot 310, the limiting strip block 21 includes a connecting plate 211 and a plug-in plate 212, the connecting plate 211 is connected to the fire door leaf 2, the plug-in plate 212 matches the plug-in slot 310, and both sides of the inner wall of the plug-in slot 310 are provided with fire-proof expansion sealing strips 32. By configuring the plug-in slot 310 and the plug-in plate 212, when the fire door leaf 2 is closed, the plug-in plate 212 is inserted into the plug-in slot 310, and at the same time, the plug-in plate 212 squeezes the fire-proof expansion sealing strips on both sides to form a seal, thereby improving the fireproof performance, and also improving the stability of the fire door leaf 2 when the fire door leaf 2 is closed.

[0030] In this embodiment, the end of the plug board 212 is a pointed end, which facilitates the plug board 212 to be inserted into the plug slot 310 .

[0031] In this embodiment, the end surface of the slideway 4 close to the fire door leaf 2 is further provided with a sealing gasket 41, the upper and lower end surfaces of the fire door leaf 2 are slidably connected with the sealing gasket 41, and the door groove 11 is provided with a fireproof sealing strip 110. By providing the sealing gasket 41 and the fireproof sealing strip 110, the sealing performance of the fire door leaf 2 is further improved to prevent smoke from spreading.

[0032] In this embodiment, in order to improve the stability of the screw rod 51 , screw rod 51 supports are disposed at both ends of the screw rod 51 .

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 4-hour steel insulated fire door, comprising a fire door frame and a fire door leaf, a door cavity is provided on the right side of the fire door frame, slideways are provided at the top and bottom of the fire door frame, the fire door leaf is slidably arranged on the slideways, a door groove is provided on the inner wall of the left end of the fire door frame, and the left end of the fire door body can be inserted into the door groove, characterized in that: The top and bottom ends of the fireproof door frame are also respectively provided with driving slide grooves, which are connected with adjacent slideways, a screw rod is horizontally arranged in the driving slide groove, a slider is slidably arranged in the driving slide groove, the slider is provided with a threaded hole matching the screw rod, the slider is sleeved on the screw rod through the threaded hole, the fireproof door leaf is connected to the slider, a driving shaft rod is arranged in the door cavity, the upper and lower ends of the driving shaft rod are respectively inserted into the driving slide groove, the upper and lower ends of the driving shaft rod are respectively provided with first bevel gears, the end of the screw rod close to the driving shaft rod is provided with a second bevel gear, the second bevel gear is meshed with the first bevel gear, and the top end of the driving shaft rod passes through the fireproof door frame and is connected to a driving motor.

2. The 4-hour steel thermal insulation fire door according to claim 1 is characterized in that: The door cavity is equipped with a pair of limit vertical plates, which are symmetrically arranged on both sides of the door cavity. The limit vertical plates are slidingly connected to the surface of the fire door frame. The right end of the fire door leaf is equipped with a limit strip block, and the limit vertical plate is equipped with a fire-proof expansion sealing strip. When the left end of the fire door leaf is inserted into the door groove, the limit strip block presses the fire-proof expansion sealing strip.

3. The 4-hour steel thermal insulation fire door according to claim 2 is characterized in that: The limiting vertical plate is provided with a plug-in slot, the limiting strip block comprises a connecting plate and a plug-in plate, the connecting plate is connected to the fireproof door leaf, the plug-in plate matches the plug-in slot, and fireproof expansion sealing strips are provided on both sides of the inner wall of the plug-in slot.

4. The 4-hour steel thermal insulation fire door according to claim 3 is characterized in that: The end of the plug board is a pointed end.

5. The 4-hour steel thermal insulation fire door according to claim 3 is characterized in that: The end surface of the slideway close to the fireproof door leaf is provided with a sealing pad, and the upper and lower end surfaces of the fireproof door leaf are slidably connected with the sealing pad.

6. The 4-hour steel thermal insulation fire door according to claim 3, characterized in that: A fireproof sealing strip is arranged in the door groove.

7. The 4-hour steel thermal insulation fire door according to claim 2, characterized in that: Screw rod supports are arranged at both ends of the screw rod.

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