CN218400882U - Fire-proof door - Google Patents

Fire-proof door Download PDF

Info

Publication number
CN218400882U
CN218400882U CN202123221835.4U CN202123221835U CN218400882U CN 218400882 U CN218400882 U CN 218400882U CN 202123221835 U CN202123221835 U CN 202123221835U CN 218400882 U CN218400882 U CN 218400882U
Authority
CN
China
Prior art keywords
door
fire
door leaf
limiting plate
leaf
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202123221835.4U
Other languages
Chinese (zh)
Inventor
张九金
朱良永
过新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Delin Defense Equipment Ltd
Original Assignee
Wuxi Delin Defense Equipment Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Delin Defense Equipment Ltd filed Critical Wuxi Delin Defense Equipment Ltd
Priority to CN202123221835.4U priority Critical patent/CN218400882U/en
Application granted granted Critical
Publication of CN218400882U publication Critical patent/CN218400882U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Special Wing (AREA)

Abstract

The utility model belongs to the technical field of boats and ships, a prevent fire door is disclosed, set up the fire control mouth on this first door leaf of fire door, fixed the setting first limiting plate in the border of fire control mouth, first limiting plate stretches out in the fire control mouth, and with first door leaf parallel arrangement, set up the fire control wicket in the fire control mouth, and the fire control wicket rotates with first door leaf and is connected, at the in-process of closing the fire control wicket, when the terminal surface of fire control wicket rotated to the position parallel with first door leaf, the fire control wicket is butt state or laminating state with first limiting plate, and then reached first limiting plate to the spacing effect of fire control wicket, saved in process of production, the regulating spring hinge, the process of hinge or other connecting pieces angle of opening and shutting, can effectively shorten production cycle, be applicable to big batch, short periodic production demand.

Description

Fire-proof door
Technical Field
The utility model relates to a boats and ships technical field especially relates to a prevent fire door.
Background
The cabins of the ship have the characteristics of more precise instruments, more oil delivery lines, more water pipelines and the like, and different pipelines are mutually interwoven, so that the air flowability on the ship is poor, therefore, the heat accumulated by slow oxidation is not easy to dissipate, and once the conditions of electromechanical short circuit, open fire or static electricity utilization and the like occur, the fire disaster is very easy to happen. After a fire disaster occurs, the fire disaster is accompanied by strong smog, and the flame and the smog are quickly diffused, so that the danger of burning of adjacent cabins and even explosion of the cabins is very easy to occur.
For preventing the intensity of a fire further to stretch immediately effectively, reduce unnecessary economic loss, prior art discloses a prevent fire door, should prevent fire door including the door body, the trompil is provided with the fire control wicket on the door body, and the size of fire control wicket is suitable for the entering of fire-fighting equipment such as fire hose or fire extinguisher, and the fire control wicket passes through spring hinged joint with the door body to realize opening and shutting of fire control wicket.
However, in order to ensure that the end surface of the fire-fighting wicket is kept on the same plane with the end surface of the door body when the fire-fighting wicket is in a closed state, when the fire-fighting wicket is installed on the door body, the opening and closing angle of the spring hinge needs to be adjusted, the spring hinge is adjusted to a proper opening and closing angle, and the end surface of the fire-fighting wicket and the end surface of the door body are on the same horizontal plane when the fire-fighting wicket is closed, so that the mode of adjusting the spring hinge one by one is not beneficial to the requirements of large production batch and short production cycle of fire-fighting doors at present. Therefore, it is desirable to provide a fire-proof door to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent fire door has for the spacing technological effect of the little door of fire control of closed condition.
To achieve the purpose, the utility model adopts the following technical proposal:
a fire rated door, comprising:
a door frame including a first door frame;
the door leaf comprises a first door leaf, the first door leaf is rotatably connected with a first door frame, the first door leaf is provided with a fire-fighting opening, a first limiting plate is fixedly arranged at the edge of the fire-fighting opening, and the first limiting plate extends out of the fire-fighting opening and is arranged in parallel with the first door leaf;
little door of fire control, little door of fire control set up in the fire control mouth to rotate with first door leaf and be connected, little door of fire control can with first limiting plate butt or laminating.
Optionally, the lateral wall of one side of the small fire door, which is far away from the first door leaf, is a slope surface, and the distance between the slope surface and the first door leaf is gradually reduced along the closing direction of the small fire door.
Optionally, the door frame further includes a second door frame, the door leaf further includes a second door leaf, the second door frame is arranged opposite to the first door frame, and the second door leaf is rotatably connected to the second door frame and connected to the first door leaf through a door lock mechanism.
Optionally, the lateral wall of first door leaf is equipped with the opening, and the opening is arranged in the one side that is close to the second door leaf, opening and fire control mouth intercommunication, and the second door leaf is fixed to be provided with the second limiting plate, and second door leaf and second limiting plate parallel arrangement, the second limiting plate stretches out in the opening to on arranging the coplanar with first limiting plate in, the little door of fire control can with second limiting plate butt or laminating.
Optionally, a third limiting plate is fixedly arranged on the fire-fighting wicket, the third limiting plate and the first limiting plate are arranged on the opposite plane, and the third limiting plate and the second door leaf are arranged in parallel and can be abutted or attached to the second door leaf.
Optionally, first door frame is equipped with first mounting groove, and first mounting groove sets up towards first door leaf, is equipped with first fire prevention sealing strip in the first mounting groove, and first door leaf can compress tightly on first fire prevention sealing strip, and the second door frame is equipped with the second mounting groove, and the second mounting groove sets up towards the second door leaf, is equipped with second fire prevention sealing strip in the second mounting groove, and the second door leaf can compress tightly on second fire prevention sealing strip.
Optionally, the door frame still includes the third door frame, and first door frame passes through the third door frame with the second door frame and is connected, and the third door frame is equipped with the third mounting groove, and the third mounting groove sets up towards ground, is equipped with the third fire prevention sealing strip in the third mounting groove, and first door leaf and second door leaf homoenergetic compress tightly on the third fire prevention sealing strip.
Optionally, one side wall of the first fireproof sealing strip facing the first door leaf is an arc surface, one side wall of the second fireproof sealing strip facing the second door leaf is an arc surface, and one side wall of the third fireproof sealing strip facing the ground is an arc surface.
Optionally, the first door leaf is of a two-layer structure, a first heat insulation material is filled between the two layers of first door leaves, the second door leaf is of a two-layer structure, a second heat insulation material is filled between the two layers of second door leaves, the small fire-fighting doors are of a two-layer structure, and a third heat insulation material is filled between the two layers of small fire-fighting doors.
Optionally, an observation window is arranged on the first door leaf and/or the second door leaf.
Has the advantages that:
the utility model provides a prevent fire door, set up the fire control mouth on the first door leaf, fixed first limiting plate that sets up in the border of fire control mouth, first limiting plate stretches out in the fire control mouth, and with first door leaf parallel arrangement, set up the fire control wicket in the fire control mouth, and the fire control wicket rotates with first door leaf and is connected, at the in-process of closing the fire control wicket, when the terminal surface of fire control wicket rotates to the position with first door leaf parallel, the fire control wicket is butt state or laminating state with first limiting plate, and then reached first limiting plate to the spacing effect of fire control wicket, saved in process of production, the adjusting spring hinge, the process of hinge or other connecting pieces angle of opening and shutting, can effectively shorten production cycle, be applicable to big batch, short period's production demand more.
Drawings
Fig. 1 is a schematic structural view of the fire door provided in this embodiment, without showing a third limiting plate;
FIG. 2 is a schematic view of a sectional view of a fire-fighting wicket provided by this embodiment;
fig. 3 is a schematic partial sectional view of the door frame according to this embodiment.
In the figure:
110. a first door frame; 120. a second door frame; 130. a third door frame; 210. a first door leaf; 211. a first limit plate; 220. a second door leaf; 221. a second limiting plate; 310. a fire-fighting small door; 320. a third limiting plate; 330. thickening the plate; 400. a door lock mechanism; 510. a first fire-resistant sealing strip; 520. a second fire resistant sealing strip; 600. and (6) observing a window.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a fireproof door, which has the technical effect of limiting a fire-fighting wicket in a closed state.
Specifically, as shown in fig. 1 and fig. 2, this fire door includes the door frame, door leaf and fire control wicket 310, the door frame includes first door frame 110, the door leaf includes first door leaf 210, first door leaf 210 rotates with first door frame 110 to be connected, the fire control mouth has been seted up to first door leaf 210, the fixed first limiting plate 211 that is provided with in border of fire control mouth, first limiting plate 211 stretches out in the fire control mouth, and with first door leaf 210 parallel arrangement, fire control wicket 310 sets up in the fire control mouth, and rotate with first door leaf 210 and be connected, fire control wicket 310 can with first limiting plate 211 butt or the laminating.
It is understood that the rotational connection between the first door leaf 210 and the first door frame 110 can be achieved by a hinge, a spring hinge or other connection members; the rotation connection between the fire door 310 and the first door leaf 210 may be implemented by a hinge, a spring hinge or other connection. The first limiting plate 211 may be adhered to the first door 210, welded to the first door 210, or fixed to the first door 210 by a connector such as a bolt or a screw.
The fire door that this embodiment provided, at the in-process of closing little door 310 of fire control, when the terminal surface of little door 310 of fire control rotated to the position with first door leaf 210 parallel, little door 310 of fire control is butt state or laminating state with first limiting plate 211, and then reached first limiting plate 211 to the spacing effect of little door 310 of fire control, saved in process of production, the adjusting spring hinge, the process of hinge or other connecting piece opening and shutting angles, can effectively shorten production cycle, be applicable to in batches more, short period's production demand.
Optionally, as shown in fig. 1 and 2, the door frame further includes a second door frame 120, the door leaf further includes a second door leaf 220, the second door frame 120 is disposed opposite to the first door frame 110, and the second door leaf 220 is rotatably connected to the second door frame 120 and connected to the first door leaf 210 by a door lock mechanism 400. The design of two opening doors can make prevent that fire door has great opening space, makes things convenient for the transport of personnel business turn over and goods.
The door lock mechanism 400 is a door lock mechanism that is relatively common in the prior art, and is not described herein. It is understood that the rotational connection of the second door 220 to the second door frame 120 may be achieved by a hinge, a spring hinge, or other connection.
Optionally, as shown in fig. 1 and 2, the first door leaf 210 and/or the second door leaf 220 are provided with an observation window 600 to facilitate observation of the cabin condition or fire on the other side of the door leaf. In the technical solution provided in this embodiment, the first door leaf 210 and the second door leaf 220 are both provided with the observation windows 600 to enlarge the observation area and the observation angle. Of course, in other embodiments, the observation window 600 may be only disposed on the first door leaf 210, or only the observation window 600 may be disposed on the second door leaf 220, according to actual situations.
Optionally, as shown in fig. 2, the lateral wall of one side of the small fire door 310, which is far away from the first door leaf 210, is a slope, and along the direction in which the small fire door 310 is closed, the distance between the slope and the first door leaf 210 is gradually reduced, and when the small fire door 310 is closed, the slope structure can avoid the small fire door 310 from colliding with the second door leaf 220, so that the small fire door 310 can be protected, and the closing process of the small fire door 310 can be more smooth.
Preferably, as shown in fig. 2, an opening is formed in a side wall of the first door leaf 210, the opening is disposed on one side close to the second door leaf 220, the opening is communicated with the fire-fighting opening, a second limiting plate 221 is fixedly disposed on the second door leaf 220, the second door leaf 220 is parallel to the second limiting plate 221, the second limiting plate 221 extends out of the opening and is disposed on the same plane as the first limiting plate 211, and the fire-fighting wicket 310 can abut against or be attached to the second limiting plate 221. At the in-process of closing little door 310 of fire control, when the terminal surface of little door 310 of fire control rotated the closed condition, little door 310 of fire control and second limiting plate 221 butt or laminating to reach the second limiting plate 221 for the spacing effect of little door 310 of fire control, avoid because first limiting plate 211 splits and lead to spacing problem of failing, improved to the spacing reliability of little door 310 of fire control.
It can be understood that the second limiting plate 221 may be adhered to the second door 220, or welded to the second door 220, or fixed to the second door 220 by a connector such as a bolt or a screw.
Furthermore, the opening and the fire fighting port communicated with the opening are arranged at the bottom of the first door leaf 210, when a fire disaster occurs, dense smoke is often located at the upper layer of the closed space, and the opening and the fire fighting port are arranged at the bottom of the first door leaf 210, so that the diffusion of smoke can be effectively reduced.
Further, with continued reference to fig. 2, a thickened plate 330 is fixed on the small fire door 310, and on the side away from the small fire door 310, the end surfaces of the thickened plate 330, the first limiting plate 211 and the second limiting plate 221 are on the same horizontal plane, so as to improve the uniformity and the aesthetic property of the overall structure of the fire door. It is understood that the thickened plate 330 can be adhered to the fire door 310, welded to the fire door 310, or fixed to the fire door 310 by bolts, screws, or other connecting members.
Optionally, with reference to fig. 2, a third limiting plate 320 is fixedly disposed on the fire-fighting wicket 310, the third limiting plate 320 and the first limiting plate 211 are disposed on the opposite plane, the third limiting plate 320 and the second door 220 are arranged in parallel, and can be abutted or attached to the second door 220, in the process of closing the fire-fighting wicket 310, when the end surface of the fire-fighting wicket 310 turns to the closed state, the third limiting plate 320 and the second door 220 are abutted or attached to each other, so that the effect of limiting the fire-fighting wicket 310 in the opposite direction of the first limiting plate 211 is achieved, the problem of limiting failure caused by the fracture of the first limiting plate 211 is avoided, and the reliability of limiting the fire-fighting wicket 310 is improved.
It is understood that the third limiting plate 320 may be adhered to the small fire door 310, welded to the small fire door 310, or fixed to the small fire door 310 by a connecting member such as a bolt or a screw.
Optionally, as shown in fig. 3, the first door frame 110 is provided with a first installation groove, the first installation groove is disposed toward the first door leaf 210, a first fireproof sealing strip 510 is disposed in the first installation groove, and when the first door leaf 210 is in a closed state, the first door leaf 210 can be pressed against the first fireproof sealing strip 510; above-mentioned second door frame 120 is equipped with the second mounting groove, and the second mounting groove sets up towards second door leaf 220, is equipped with second fire prevention sealing strip 520 in the second mounting groove, and when second door leaf 220 was the closed condition, second door leaf 220 can compress tightly on second fire prevention sealing strip 520 to realize the sealed effect of preventing fires between door leaf and the door frame.
Further, the door frame that this embodiment provided still includes third door frame 130, first door frame 110 is connected through third door frame 130 with second door frame 120, third door frame 130 is equipped with the third mounting groove, the third mounting groove sets up towards ground, be equipped with third fire prevention sealing strip in the third mounting groove, when first door leaf 210 is the closure status, first door leaf 210 can compress tightly on third fire prevention sealing strip, when second door leaf 220 is the closure status, second door leaf 220 also can compress tightly on third fire prevention sealing strip, make the top position of preventing fire door also have the sealed effect of fire prevention, the security of preventing fire door has further been improved.
In the technical scheme that this embodiment provided, above-mentioned first mounting groove, second mounting groove and third mounting groove are by bending process shaping, and first door frame 110, second door frame 120 and third door frame 130 formula structure as an organic whole to simplify door frame overall structure, reduce the production degree of difficulty of door frame, and then improve production efficiency. Of course, in other embodiments, the first installation groove, the second installation groove, and the third installation groove may be formed through other processes, and the first door frame 110, the second door frame 120, and the third door frame 130 may be a split structure and may be provided according to actual situations.
Optionally, with reference to fig. 3, the above-mentioned one side wall of the first fire-proof sealing strip 510 towards the first door leaf 210 is an arc surface, the one side wall of the second fire-proof sealing strip 520 towards the second door leaf 220 is an arc surface, and the one side wall of the third fire-proof sealing strip towards the ground is an arc surface, so as to increase the contact area between the first fire-proof sealing strip 510 and the first door leaf 210, the contact area between the second fire-proof sealing strip 520 and the second door leaf 220, and the contact area between the third fire-proof sealing strip and the first door leaf 210 and the second door leaf 220, thereby improving the compression effect, and further improving the fire-proof sealing performance of the fire-proof door.
Optionally, the first door leaf 210 has a two-layer structure, a first heat insulating material is filled between the two layers of first door leaves 210, the second door leaf 220 has a two-layer structure, a second heat insulating material is filled between the two layers of second door leaves 220, the small fire door 310 has a two-layer structure, and a third heat insulating material is filled between the two layers of small fire doors 310, so that the first door leaf 210, the second door leaf 220, and the small fire door 310 all have fireproof and heat insulating effects.
The first heat insulating material, the second heat insulating material, and the third heat insulating material may be made of glass fiber, rock wool, or the like, and the first heat insulating material, the second heat insulating material, and the third heat insulating material may be the same or different.
The fire door that this embodiment provided, at the in-process of closing little door 310 of fire control, when the terminal surface of little door 310 of fire control changes to the position parallel with first door leaf 210, little door 310 of fire control is butt state or laminating state with first limiting plate 211, and then has reached first limiting plate 211 to the spacing effect of little door 310 of fire control, saved in process of production, the regulating spring hinge, the process of hinge or other connecting piece angles of opening and shutting, can effectively shorten production cycle, be applicable to in batches more, short period's production demand.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A fire rated door, comprising:
a door frame comprising a first door frame (110);
the door leaf comprises a first door leaf (210), the first door leaf (210) is rotatably connected with the first door frame (110), the first door leaf (210) is provided with a fire fighting port, a first limiting plate (211) is fixedly arranged at the edge of the fire fighting port, and the first limiting plate (211) extends out of the fire fighting port and is parallel to the first door leaf (210);
the small fire-fighting door (310) is arranged in the fire-fighting port and is rotatably connected with the first door leaf (210), and the small fire-fighting door (310) can be abutted against or attached to the first limiting plate (211).
2. The fire door of claim 1, wherein a side wall of the fire door hatch (310) facing away from the first door leaf (210) is sloped, the slope decreasing in distance from the first door leaf (210) in a direction in which the fire door hatch (310) is closed.
3. The fire door according to claim 1 or 2, characterized in that the frame further comprises a second frame (120), the leaf further comprises a second leaf (220), the second frame (120) being arranged opposite the first frame (110), the second leaf (220) being rotatably connected to the second frame (120) and to the first leaf (210) by means of a door lock mechanism (400).
4. The fire door of claim 3, characterized in that a side wall of the first door leaf (210) is provided with an opening, the opening is disposed close to one side of the second door leaf (220), the opening is communicated with the fire fighting opening, a second limiting plate (221) is fixedly disposed on the second door leaf (220), the second door leaf (220) and the second limiting plate (221) are arranged in parallel, the second limiting plate (221) extends out of the opening and is disposed on the same plane as the first limiting plate (211), and the fire-fighting wicket (310) can be abutted against or attached to the second limiting plate (221).
5. The fire door of claim 3, wherein a third limiting plate (320) is fixedly arranged on the fire-fighting wicket (310), the third limiting plate (320) and the first limiting plate (211) are arranged on opposite planes, and the third limiting plate (320) and the second door leaf (220) are arranged in parallel and can be abutted or attached to the second door leaf (220).
6. The fire door of claim 3, wherein the first door frame (110) is provided with a first mounting groove disposed toward the first door leaf (210), a first fire-resistant sealing strip (510) is disposed in the first mounting groove, the first door leaf (210) is capable of being pressed against the first fire-resistant sealing strip (510), the second door frame (120) is provided with a second mounting groove disposed toward the second door leaf (220), a second fire-resistant sealing strip (520) is disposed in the second mounting groove, and the second door leaf (220) is capable of being pressed against the second fire-resistant sealing strip (520).
7. The fire door of claim 6, wherein the door frame further comprises a third door frame (130), the first door frame (110) and the second door frame (120) are connected by the third door frame (130), the third door frame (130) is provided with a third mounting groove, the third mounting groove is arranged towards the ground, a third fire-proof sealing strip is arranged in the third mounting groove, and both the first door leaf (210) and the second door leaf (220) can be pressed against the third fire-proof sealing strip.
8. The fire door of claim 7, wherein a side of the first fire proof seal (510) facing the first door leaf (210) is curved, a side of the second fire proof seal (520) facing the second door leaf (220) is curved, and a side of the third fire proof seal facing the ground is curved.
9. The fire door as recited in claim 3, wherein the first door leaf (210) is of a two-layer structure, a first thermal insulation material is filled between the two layers of the first door leaf (210), the second door leaf (220) is of a two-layer structure, a second thermal insulation material is filled between the two layers of the second door leaf (220), the fire-fighting wicket (310) is of a two-layer structure, and a third thermal insulation material is filled between the two layers of the fire-fighting wicket (310).
10. The fire door according to claim 3, characterized in that the first door leaf (210) and/or the second door leaf (220) is provided with an observation window (600).
CN202123221835.4U 2021-12-21 2021-12-21 Fire-proof door Active CN218400882U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123221835.4U CN218400882U (en) 2021-12-21 2021-12-21 Fire-proof door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123221835.4U CN218400882U (en) 2021-12-21 2021-12-21 Fire-proof door

Publications (1)

Publication Number Publication Date
CN218400882U true CN218400882U (en) 2023-01-31

Family

ID=84997715

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202123221835.4U Active CN218400882U (en) 2021-12-21 2021-12-21 Fire-proof door

Country Status (1)

Country Link
CN (1) CN218400882U (en)

Similar Documents

Publication Publication Date Title
CN103437461B (en) Transparent type firewall system
CN218400882U (en) Fire-proof door
CN205348922U (en) Portable antiknock sanctuary
CN101649715A (en) Airtight, weathertight and fireproof door with double leaves
CN105442898A (en) Movable anti-exploration refuge
CN102211651A (en) Fireproof pressure-proof watertight/airtight door for ship
CN213361130U (en) Electric smoke-discharging fire-proof valve
CN207813421U (en) A kind of double-open type has the fire resistant doorsets of perspective structure
CN207747982U (en) A60 grades of single fan steel doors
CN202245644U (en) Fireproof landing door
CN104747037B (en) Steel heat insulation fireproof door
CN202023479U (en) Nuclear-power airtight fireproof door
CN207813422U (en) A kind of double-open type has the perspective fire resistant doorsets of skeleton structure
CN107628194A (en) A60 levels list fans steel door
CN209208979U (en) A60 grades of airtight of water tightness are double to open fire resistant doorsets
CN215632583U (en) Fireproof system applied to fire control room of comprehensive building
CN108868511A (en) A kind of flame-retarded fire-proof door of bidirectional opening
CN214397097U (en) A60-level single-leaf steel door
CN219953159U (en) High-stability deformation-resistant steel fireproof door
CN112744327A (en) A60-level single-leaf steel door
CN205349172U (en) High fire -retardant steel fire -resistant door
CN213450107U (en) Double-open galvanized steel sheet heat-insulation fireproof door
CN112252926A (en) Marine porthole
CN208718547U (en) Europe superscript fire resistance steel door
CN209817844U (en) Double-deck sound insulation steel heat-insulating fireproof door

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant