CN111075324A - Pre-buried formula frame prevents fire door with supporting role - Google Patents
Pre-buried formula frame prevents fire door with supporting role Download PDFInfo
- Publication number
- CN111075324A CN111075324A CN201911312315.9A CN201911312315A CN111075324A CN 111075324 A CN111075324 A CN 111075324A CN 201911312315 A CN201911312315 A CN 201911312315A CN 111075324 A CN111075324 A CN 111075324A
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- Prior art keywords
- frame
- door frame
- door
- fireproof
- door leaf
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 57
- 238000009434 installation Methods 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 238000003780 insertion Methods 0.000 claims description 36
- 230000037431 insertion Effects 0.000 claims description 36
- 230000003014 reinforcing effect Effects 0.000 claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 23
- 239000010425 asbestos Substances 0.000 claims description 16
- 229910052895 riebeckite Inorganic materials 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 6
- 239000010440 gypsum Substances 0.000 claims description 6
- 229910052602 gypsum Inorganic materials 0.000 claims description 6
- 230000002265 prevention Effects 0.000 description 17
- 239000004411 aluminium Substances 0.000 description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/04—Frames for doors, windows, or the like to be fixed in openings
- E06B1/52—Frames specially adapted for doors
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/56—Fastening frames to the border of openings or to similar contiguous frames
- E06B1/60—Fastening frames to the border of openings or to similar contiguous frames by mechanical means, e.g. anchoring means
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
- E06B3/36—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement with a single vertical axis of rotation at one side of the opening, or swinging through the opening
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B3/72—Door leaves consisting of frame and panels, e.g. of raised panel type
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B2003/7059—Specific frame characteristics
- E06B2003/7074—Metal frames
- E06B2003/7078—Metal frames with fire retardant measures in frame
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention discloses a pre-embedded frame fireproof door with a supporting function, which comprises a door frame structure and a door leaf structure, wherein the door frame structure is pre-embedded in an installation wall body, the door frame structure is composed of an upper door frame, a left door frame, a right door frame and a lower door frame, the upper door frame, the left door frame, the right door frame and the lower door frame are welded end to form a rectangular frame body, the door leaf structure is rotatably connected inside the rectangular frame body of the door frame structure, and a limiting structure is arranged on one side, close to the end face of the inner side of the door leaf structure, of the. The door frame and the wall body of the fireproof door can be fixedly installed in a pre-embedded type connection mode, so that no gap exists when the door frame and the wall body are installed, the wall body is supported, the fireproof performance of the fireproof door during installation and use is improved, the potential safety hazard during specific use is reduced, and the supporting effect of the fireproof door on the wall body is expanded.
Description
Technical Field
The invention relates to the technical field of fireproof doors, in particular to a pre-embedded frame fireproof door with a supporting function.
Background
The fireproof door is a door which can meet the requirements of fire-resistant stability, integrity and heat insulation within a certain time, and is a fireproof partition with certain fire resistance arranged in a fireproof partition room, an evacuation staircase, a vertical shaft and the like. The fire door is an important component in fire-fighting equipment and is an important part in social fire prevention, and a door closer of the fire door or a door closing device which can automatically close a door leaf of a normally open fire door is arranged on the fire door.
But present fire door when specifically installing and using, adopt the door frame to pass through the mounting to be fixed in the wall body usually, the mounting means of installation fire door leaf in the door frame simultaneously, this kind can the mounting means not only make fire door frame in specifically installing and using and the wall body between have the installation gap, but fire door and wall body's installation seal nature is not good, the fire behavior reduces when leading to the use easily, present fire door does not possess the effect that supports the wall body in the specific use simultaneously, can not support the wall body under high temperature environment, the potential safety hazard of use is higher.
Therefore, the pre-embedded frame fireproof door with the supporting function is needed, the door frame and the wall body of the fireproof door can be fixedly installed through the pre-embedded connecting mode, so that no gap exists in installation of the door frame and the wall body, the wall body is supported, the fireproof performance of the fireproof door in installation and use is improved, potential safety hazards in specific use are reduced, and the supporting function of the fireproof door on the wall body is expanded.
Disclosure of Invention
The invention aims to provide a pre-embedded frame fireproof door with a supporting function, and aims to solve the problems that when the existing fireproof door is specifically installed and used, a door frame is usually fixed in a wall body through a fixing piece, and meanwhile, a fireproof door leaf is installed in the door frame, the installation mode can not only enable an installation gap to exist between the fireproof door frame and the wall body during the specific installation and use, but also the installation tightness between the fireproof door and the wall body is poor, so that the fire resistance is reduced during the use, and meanwhile, the existing fireproof door does not have the function of supporting the wall body during the specific use, cannot support the wall body under a high-temperature environment, and has high potential safety hazard during the use.
The invention is realized by the following steps:
the utility model provides a fire door is prevented to pre-buried formula frame with supporting role, includes door frame structure and door leaf structure, and the door frame structure is pre-buried in installation wall body, and the door frame structure comprises last door frame, left door frame, right door frame and lower door frame, goes up the door frame, left door frame, right door frame and lower door frame end to end welding constitution rectangular framework, and the inside rotation of rectangular framework of door frame structure is connected with the door leaf structure, and limit structure is installed to one side that is close to door leaf structure medial surface on the bottom surface of door leaf structure.
Further, go up the door frame, left side door frame, the U-shaped recess has all been seted up on the outside terminal surface of right side door frame and lower door frame, and horizontal even vertical welding has the connection reinforcing plate in the recess of going up door frame and lower door frame, and the even vertical welding of vertical level has the connection reinforcing plate in the recess of left side door frame and right door frame, go up the door frame, left side door frame, the connecting hole has been run through to the connection reinforcing plate upper level of right side door frame and lower door frame, and the even perpendicular welding in recess both sides level of going up door frame and lower door frame has run through the hole post, the vertical even perpendicular welding in recess both sides of left side door frame and right door frame has run through the hole post, and the top of through hole.
And then through last door frame, left door frame, the U-shaped recess has all been seted up on the outside terminal surface of right door frame and lower door frame, be convenient for pour in advance and be used for supporting the concrete of pouring, go up the door frame simultaneously, left door frame, all weld in the recess of right door frame and lower door frame and connect the reinforcing plate, be used for supporting the recess, prevent its thermal deformation, and go up the door frame, left door frame, the connecting hole and the wall body reinforcing bar cooperation connection on the through hole post and the connection reinforcing plate in the recess of right door frame and lower door frame, improve the fastness of connection.
Further, go up the door frame, left side door frame, equal perpendicular interior terminal surface is provided with the flange on the medial surface of right side door frame and lower door frame, and go up the door frame, left side door frame, integrated into one piece makes between right side door frame and lower door frame and the flange, the medial surface of flange is improved level and is run through the outside terminal surface and seted up the jack, and jack on the flange evenly sets up, all be provided with cylindric aluminium cover in the jack, and the external diameter of aluminium cover is less than the internal diameter of jack, the aluminium cover passes through aluminium pole welded fastening in the jack, and it has the gypsum layer to fill between the outer wall of aluminium cover and the inner wall of jack.
And then all perpendicular interior terminal surface is provided with the flange on the medial surface through door frame, left door frame, right door frame and lower door frame to the medial surface of flange is improved the aluminium cover in the welding of jack and is used for cooperating the inserted bar that pegs graft on the door leaf to the support nature of wall body, and the outer wall of aluminium cover and the inner wall of jack are filled with the gypsum layer to the level runs through the outside terminal surface, improves fire proofness and leakproofness simultaneously in the jack.
Further, go up door frame, left door frame, right door frame and lower door frame and all adopt steel material to make, and the inboard horizontal symmetry welding of the relative terminal surface of left door frame has the pivot cover seat, and the inboard middle part level of the relative terminal surface of right door frame runs through and has seted up the slot, and the inboard at lower door frame top transversely evenly link up and has seted up spacing hole.
And then all adopt steel material to make the bulk strength who improves the door frame structure through last door frame, left door frame, right door frame and lower door frame, and the inboard horizontal symmetry welding of the relative terminal surface of left door frame has the pivot cover seat simultaneously, and the inboard middle part level of the relative terminal surface of right door frame runs through and has seted up the slot, and the inboard at lower door frame top transversely evenly link up and has seted up spacing hole, is convenient for connect the cooperation door leaf structure and closes sealedly.
Further, the door leaf structure includes the door leaf frame, a supporting plate, support column and asbestos board are constituteed, and the door leaf frame is inside hollow steel cuboid, the length of door leaf frame equals with last door frame and the vertical distance between the door frame down, and the width of door leaf frame equals with the horizontal distance between left door frame and the right door frame, one side symmetric welding that the door leaf frame is close to left door frame has the pivot, and rotate the grafting cooperation between pivot and the inboard pivot cover seat of left door frame, the inside of door leaf frame is provided with a plurality of backup pads along vertical direction level, and integrated into one piece between backup pad and the door leaf frame, the inside of door leaf frame is horizontal even vertical to be provided with the support column, and the vertical backup pad that runs through in both ends of support column welds respectively on the inside upper and lower terminal surface of door leaf frame, all pack on the inside backup pad of door leaf frame has.
And then be inside hollow steel cuboid through the door leaf frame, strengthen holistic intensity, the inside of door leaf frame is provided with a plurality of backup pads along vertical direction level simultaneously, and integrated into one piece between backup pad and the door leaf frame, the inside of door leaf frame is horizontal even vertical to be provided with the support column, and the vertical backup pad that runs through in both ends of support column welds respectively on the inside upper and lower terminal surface of door leaf frame, it has the asbestos piece all to fill in the inside backup pad of door leaf frame, the door leaf frame that steel material made, backup pad and support column, the bulk strength's that improves the door leaf prevents to warp simultaneously, be favorable to supporting when closing through backup pad and support column, it has the asbestos piece all to fill in the inside backup pad of door leaf frame simultaneously, improve the fire.
Further, the welding has the fire prevention frid on the outer terminal surface of door leaf frame, and the fire prevention frid is the rectangle framework that both sides terminal surface runs through, the length of fire prevention frid equals with vertical distance between the flange of last door frame and lower door frame, and horizontal distance equals between the width of fire prevention frid and the flange of left door frame and right door frame, the horizontal vertical reinforcing plate that evenly is provided with in the inside of fire prevention frid, and the both ends of reinforcing plate weld respectively on the upper and lower terminal surface of fire prevention frid inside, it has the fire-resistant cement piece all to fill between the inside reinforcing plate of fire prevention frid.
And then transversely vertically evenly be provided with the reinforcing plate through the inside of fire prevention tank frame, and the both ends of reinforcing plate weld respectively on the inside upper and lower terminal surface of fire prevention tank frame, strengthen the bulk strength of fire prevention tank frame, all fill between the inside reinforcing plate of fire prevention tank frame simultaneously and have fire-resistant cement piece, promote the refractiveness of door leaf.
Furthermore, the outside of the fireproof groove frame is uniformly and vertically welded with the insertion rods on the end face of the outer side of the door leaf frame, the insertion rods are matched and spliced with the insertion holes in the upper door frame, the left door frame, the right door frame and the lower door frame, the vertical cross sections of the insertion rods are circular, the outer diameters of the insertion rods are the same as the inner diameter of the aluminum sleeve, the middle of the end face of the inner side of the door leaf frame is vertically penetrated and welded with the insertion frame, the insertion arms are horizontally spliced in the insertion frame, and the outer ends of the insertion arms are matched with the insertion grooves in the right door frame in a.
And then the even vertical welding in outside of the groove frame of preventing fires on the outside terminal surface of door leaf frame has the inserted bar, and the inserted bar cooperatees with the jack on last door frame, left door frame, right door frame and the lower door frame and pegs graft, improves the support nature of door leaf to the wall body, and the vertical through welding in medial surface middle part of door leaf frame has the inserted frame simultaneously, and inserts the frame in the horizontal grafting have and insert the arm, inserts between the slot on the outer end of arm and the right door frame and pegs graft the cooperation and be used for closing fixed door leaf and door frame.
Further, limit structure is vertically installed to the inboard bottom surface of door leaf frame, and limit structure includes steel frame and diaphragm, and the cuboid structure that the steel frame runs through for inside cavity bottom face, and the bottom of steel frame both sides terminal surface runs through and has seted up logical notch, and the inside level of steel frame is provided with the diaphragm, and the both ends of diaphragm all run through the through-hole notch, horizontal vertical welding has spacing post on the bottom face of diaphragm, and the equal horizontal welding in both ends of diaphragm has the bearing frame.
And then run through the bottom of steel frame both sides terminal surface and seted up logical notch, the inside level of steel frame is provided with the diaphragm, and the both ends of diaphragm all run through the hole notch, and horizontal vertical welding has spacing post on the bottom face of diaphragm, and the equal horizontal welding in both ends of diaphragm has the bearing frame, conveniently adjusts according to the demand of specifically using and uses limit structure, satisfies the installation demand.
Furthermore, screw hole ear plates are horizontally welded at the tops of through notches on the side end faces of the steel frames, adjusting screws are connected to the screw hole ear plates through vertical threads, the top ends of the steel frames are welded to the bottom faces of the door leaf frames, bearing seats at the ends of transverse plates in the steel frames are rotatably connected with the bottom ends of the adjusting screws, and limiting columns on the transverse plates are in plug-in fit with limiting holes in lower door frames.
And then the bearing frame through diaphragm tip in the steel frame rotates with adjusting screw's bottom to be connected, spacing post on the diaphragm and the spacing hole grafting cooperation on the lower door frame to be convenient for adjust and use spacing installation door leaf of limit structure and door frame according to the demand of concrete use.
Compared with the prior art, the invention has the beneficial effects that: the invention
(1) When the pre-embedded frame fireproof door with the supporting function is used, the door frame structure consists of an upper door frame, a left door frame, a right door frame and a lower door frame, the rectangular frame body is formed by welding the upper door frame, the left door frame, the right door frame and the lower door frame end to end and is used for being installed in a wall body, the upper door frame, the left door frame, the right door frame and the lower door frame are manufactured in a split mode, the processing flow is simplified, the processing difficulty is reduced, in the specific use and installation process, the upper door frame, the left door frame, the right door frame and the lower door frame are installed in the wall body in a matched mode, meanwhile, the reinforcing steel bars on the reinforcing steel bar beams horizontally penetrate through the connecting holes and the through hole columns on the connecting reinforcing plates on the upper door frame, the left door frame, the right door frame and the lower door frame, the firmness and the integrity of connection are guaranteed, the door leaf structure is convenient to rotate and match, and when the door leaf frame on the door leaf structure is closed, the insertion rods on the outer side end faces of the door leaf frame are inserted into the insertion holes in the convex plates of the upper door frame, the left door frame, the right door frame and the lower door frame, so that the support connection stability of the door leaf frame and the door frame structure is improved.
(2) The door leaf frame is internally and horizontally provided with a plurality of supporting plates along the vertical direction, the supporting plates and the door leaf frame are integrally formed, the inside of the door leaf frame is transversely and uniformly and vertically provided with supporting columns, two ends of each supporting column vertically penetrate through the corresponding supporting plate and are respectively welded on the upper end surface and the lower end surface inside the door leaf frame, the supporting plates inside the door leaf frame are filled with asbestos blocks, the door leaf frame, the supporting plates and the supporting columns are made of steel materials, the deformation prevention of the integral strength of the door leaf is improved, the supporting plates and the supporting columns are favorable for supporting when the door leaf is closed, meanwhile, the asbestos blocks are filled in the supporting plates inside the door leaf frame, the fireproof and heat insulation properties are improved, and the door frame and the wall body of the fireproof door can be fixedly installed in a pre-embedded connection mode, so that no gap exists between the door frame and the wall body, thereby expanding the supporting effect of the existing fireproof door on the wall body.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Figure 1 is a schematic diagram of the overall structure of a pre-buried frame fire door with a supporting function;
figure 2 is an exploded view of a pre-buried frame fire rated door with support;
figure 3 is a structural schematic view of a frame structure in an embodiment of a pre-buried fire rated door with support;
figure 4 is an exploded view of a frame structure of an embodiment of a pre-flush framed fire rated door having a support function;
figure 5 is a schematic structural view of a left doorframe of an embodiment of a pre-buried frame fire door having a supporting function;
figure 6 is a schematic structural view of a right frame of an embodiment of a pre-buried fire-rated door with a frame support;
figure 7 is a schematic structural view of a lower frame of an embodiment of a pre-buried fire rated door having a supporting function;
figure 8 is an exploded view of a door leaf structure in an embodiment of a pre-buried frame fire door with support;
figure 9 is a structural schematic view of a door leaf structure in an embodiment of a pre-buried frame fire door with support;
figure 10 is a schematic structural view of a retention structure in an embodiment of a pre-fire rated frame fire rated door with support;
in the figure: 1. a door frame structure; 11. an upper door frame; 12. a left doorframe; 121. a rotating shaft sleeve seat; 13. a right door frame; 131. a slot; 14. a lower door frame; 141. a limiting hole; 15. penetrating the hole column; 16. connecting the reinforcing plate; 17. connecting holes; 18. a convex plate; 19. a jack; 191. an aluminum sleeve; 192. a gypsum cover; 2. a door leaf structure; 21. a door leaf frame; 22. a rotating shaft; 23. a support plate; 24. a support pillar; 25. a mass of asbestos; 26. a fireproof slot frame; 261. a reinforcing plate; 262. a refractory cement block; 27. inserting a rod; 28. inserting a frame; 29. an inserting arm; 3. a limiting structure; 31. a steel frame; 32. a transverse plate; 33. a limiting column; 34. a bearing seat; 35. a through notch; 36. a screw hole ear plate; 37. adjusting the screw rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, an embedded fire door with a frame structure includes a door frame structure 1 and a door leaf structure 2, the door frame structure 1 is embedded in an installation wall, the door frame structure 1 is composed of an upper door frame 11, a left door frame 12, a right door frame 13 and a lower door frame 14, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 are welded end to form a rectangular frame, the door leaf structure 2 is rotatably connected inside the rectangular frame of the door frame structure 1, and a limit structure 3 is installed on one side of the bottom surface of the door leaf structure 2, which is close to the inner side end surface of the door leaf structure 2.
Furthermore, when the pre-embedded frame fireproof door with the supporting function is used, the door frame structure 1 consists of an upper door frame 11, a left door frame 12, a right door frame 13 and a lower door frame 14, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 form a rectangular frame body by welding end to end for installation in a wall body, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 are manufactured in a split manner, the processing flow is simplified, the processing difficulty is reduced, meanwhile, when the pre-embedded frame fireproof door is used and installed specifically, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 are installed in the wall body in a matching manner, reinforcing steel bars on the pre-arranged reinforcing steel bars horizontally penetrate through connecting holes 17 and through holes 15 on connecting reinforcing plates 16 on the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14, meanwhile, the door leaf structure 2 is rotatably connected inside the rectangular frame body of the door frame structure 1, so that the door leaf structure 2 is convenient to rotate and match, when the door leaf frame 21 on the door leaf structure 2 is closed, the insertion rods 27 on the outer side end face of the door leaf frame 21 are inserted into the insertion holes 19 on the convex plates 18 of the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14, so that the support connection stability of the door leaf frame 21 and the door frame structure 1 is improved, meanwhile, a plurality of support plates 23 are horizontally arranged inside the door leaf frame 21 along the vertical direction, the support plates 23 are integrally formed with the door leaf frame 21, support columns 24 are horizontally, uniformly and vertically arranged inside the door leaf frame 21, two ends of each support column 24 vertically penetrate through the support plates 23 and are respectively welded on the upper end face and the lower end face inside the door leaf frame 21, asbestos blocks 25 are filled on the inner support plates 23, improve the bulk strength of door leaf prevent deformation simultaneously, be favorable to supporting when closing through backup pad 23 and support column 24, all pack simultaneously on the inside backup pad 23 of door leaf frame 21 has asbestos piece 25, improve the fire-proof heat-proof quality, and then can prevent fire door's door frame and wall body through the connected mode fixed mounting of pre-buried formula, thereby reach and do not have the gap with the wall body installation, and have the supporting role to the wall body, thereby promote the fire behavior that prevents fire door installation and use and reduce the potential safety hazard in the concrete use, thereby expand the supporting role of some fire doors to the wall body that shows.
Referring to fig. 4, 5, 6 and 7, U-shaped grooves are formed in the outer end surfaces of the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14, connecting reinforcing plates 16 are horizontally, uniformly and vertically welded in the grooves of the upper door frame 11 and the lower door frame 14, the connecting reinforcing plates 16 are vertically, horizontally and uniformly welded in the grooves of the left door frame 12 and the right door frame 13, connecting holes 17 are horizontally, uniformly and vertically welded on the connecting reinforcing plates 16 of the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14, penetrating hole columns 15 are horizontally, uniformly and vertically welded on the two sides of the grooves of the upper door frame 11 and the lower door frame 14, penetrating hole columns 15 are vertically and uniformly welded on the two sides of the grooves of the left door frame 12 and the right door frame 13, and through holes are formed in the top ends of.
And then all seted up the U-shaped recess on the outside end face through last door frame 11, left door frame 12, right door frame 13 and lower door frame 14, be convenient for pour in advance and be used for supporting concreting, it has connection reinforcing plate 16 all to weld in the recess of going up door frame 11, left door frame 12, right door frame 13 and lower door frame 14 simultaneously, be used for supporting the recess, prevent its thermal deformation, and go up door frame 11, left door frame 12, through hole post 15 in the recess of right door frame 13 and lower door frame 14 and connect connecting hole 17 and wall body reinforcing bar cooperation on the reinforcing plate 16 and be connected, improve the fastness of connecting.
Referring to fig. 4, 5, 6 and 7, the inner side end surfaces of the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 are all vertically provided with a convex plate 18, the upper door frame 11, the left door frame 12, the right door frame 13, the lower door frame 14 and the convex plate 18 are integrally formed, the inner side end surface of the convex plate 18 horizontally penetrates through the outer side end surface and is provided with insertion holes 19, the insertion holes 19 on the convex plate 18 are uniformly arranged, cylindrical aluminum sleeves 191 are arranged in the insertion holes 19, the outer diameters of the aluminum sleeves 191 are smaller than the inner diameters of the insertion holes 19, the aluminum sleeves 191 are welded and fixed in the insertion holes 19 through aluminum rods, and gypsum layers 192 are filled between the outer walls of the aluminum sleeves 191 and the inner walls of the insertion holes 19.
And then all perpendicular interior terminal surface is provided with flange 18 on the medial surface through door frame 11, left door frame 12, right door frame 13 and lower door frame 14 to the medial surface of flange 18 is improved the aluminium cover 191 in the jack 19, and it has gypsum layer 192 to fill between the outer wall of aluminium cover 191 and the inner wall of jack 19, improves fire proofness and leakproofness, and the level runs through outside terminal surface and offers jack 19 and is used for the inserted bar 27 on the cooperation grafting door leaf to improve the door leaf to the support nature of wall body on the medial surface of flange 18, and the jack 19 is gone up.
Referring to fig. 4, 5, 6 and 7, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 are all made of steel material, the rotating shaft sleeve seats 121 are horizontally and symmetrically welded on the inner sides of the opposite end surfaces of the left door frame 12, the slots 131 are horizontally formed in the middle of the inner sides of the opposite end surfaces of the right door frame 13 in a penetrating manner, and the limiting holes 141 are horizontally and uniformly formed in the inner sides of the top of the lower door frame 14 in a penetrating manner.
And then all adopt steel material to make the bulk strength who improves door frame structure 1 through last door frame 11, left door frame 12, right door frame 13 and lower door frame 14, and the inboard horizontal symmetrical welding of the relative terminal surface of left door frame 12 has pivot sleeve seat 121 simultaneously, and the inboard middle part level of the relative terminal surface of right door frame 13 runs through and has seted up slot 131, and the inboard at lower door frame 14 top transversely evenly link up and has seted up spacing hole 141, is convenient for connect cooperation door leaf structure 2 and closes sealedly.
Referring to fig. 8, 9 and 10, the door structure 2 includes a door frame 21, support plates 23, support pillars 24 and asbestos plates 25, the door frame 21 is a hollow steel cuboid, the length of the door frame 21 is equal to the vertical distance between the upper door frame 11 and the lower door frame 14, the width of the door frame 21 is equal to the horizontal distance between the left door frame 12 and the right door frame 13, a rotation shaft 22 is symmetrically welded on one side of the door frame 21 close to the left door frame 12, the rotation shaft 22 is rotatably inserted and matched with a rotation shaft sleeve seat 121 on the inner side of the left door frame 12, a plurality of support plates 23 are horizontally arranged in the door frame 21 along the vertical direction, the support plates 23 are integrally formed with the door frame 21, the support pillars 24 are horizontally and uniformly and vertically arranged in the door frame 21, and two ends of the support pillars 24 vertically penetrate through the support plates 23 and are respectively welded on the upper and lower end faces in the door frame 21, the inner support plates 23 of the door frame 21 are all filled with asbestos blocks 25.
And then be inside hollow steel cuboid through door leaf frame 21, strengthen holistic intensity, door leaf frame 21's inside is provided with a plurality of backup pads 23 along vertical direction level simultaneously, and integrated into one piece between backup pad 23 and the door leaf frame 21, door leaf frame 21's inside is horizontal even vertical to be provided with support column 24, and the both ends of support column 24 are vertical to run through backup pad 23 and weld respectively on the inside upper and lower terminal surface of door leaf frame 21, it has asbestos piece 25 all to fill on door leaf frame 21's the inside backup pad 23, door leaf frame 21 that the steel material was made, backup pad 23 and support column 24, improve the deformation-preventing of the bulk strength of door leaf simultaneously, be favorable to supporting when closing through backup pad 23 and support column 24, it has asbestos piece 25 all to fill on door leaf frame 21's the inside backup pad 23 simultaneously, improve fireproof and heat-proof properties.
Referring to fig. 8, 9 and 10, a fire chute frame 26 is welded on the outer end surface of the door leaf frame 21, the fire chute frame 26 is a rectangular frame body with two end surfaces penetrating through, the length of the fire chute frame 26 is equal to the vertical distance between the convex plates 18 of the upper door frame 11 and the lower door frame 14, the width of the fire chute frame 26 is equal to the horizontal distance between the convex plates 18 of the left door frame 12 and the right door frame 13, a reinforcing plate 261 is horizontally and vertically and uniformly arranged inside the fire chute frame 26, two ends of the reinforcing plate 261 are respectively welded on the upper end surface and the lower end surface inside the fire chute frame 26, and a refractory cement block 262 is filled between the reinforcing plates 261 inside the fire chute frame 26.
And then transversely vertically evenly be provided with reinforcing plate 261 through the inside of fire prevention chase 26, and the both ends of reinforcing plate 261 weld respectively on the inside upper and lower terminal surface of fire prevention chase 26, strengthen fire prevention chase 26's bulk strength, all fill between the inside reinforcing plate 261 of fire prevention chase 26 simultaneously and have fire-resistant cement piece 262, promote the fire resistance of door leaf.
Referring to fig. 1 and 2, the insertion rods 27 are uniformly and vertically welded to the outer portion of the fireproof groove frame 26 on the outer end face of the door leaf frame 21, the insertion rods 27 are matched and inserted into the insertion holes 19 on the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14, the vertical cross section of the insertion rods 27 is circular, the outer diameter of the insertion rods 27 is the same as the inner diameter of the aluminum sleeve 191, the insertion frame 28 is vertically welded to the middle portion of the inner end face of the door leaf frame 21 in a penetrating manner, the insertion arm 29 is horizontally inserted into the insertion frame 28, and the outer end of the insertion arm 29 is matched with the insertion groove 131 on the right door frame 13 in an insertion.
And then the inserted bar 27 is welded perpendicularly to the outer part of the fireproof groove frame 26 on the outer end face of the door leaf frame 21, and the inserted bar 27 is matched and spliced with the insertion holes 19 on the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14, so that the support of the door leaf to the wall body is improved, meanwhile, the middle part of the inner end face of the door leaf frame 21 is vertically penetrated and welded with the inserted frame 28, the inserted arm 29 is horizontally spliced in the inserted frame 28, and the outer end of the inserted arm 29 is matched with the insertion groove 131 on the right door frame 13 in a splicing manner to close and fix the door leaf and the door.
Referring to fig. 10, a limiting structure 3 is vertically installed on the inner side of the bottom surface of the door frame 21, the limiting structure 3 includes a steel frame 31 and a transverse plate 32, the steel frame 31 is a cuboid structure with a hollow bottom end surface running through, a through notch 35 is formed in the bottom end of the end surface of each of two sides of the steel frame 31, the transverse plate 32 is horizontally arranged inside the steel frame 31, two ends of the transverse plate 32 run through the through notches 35, a limiting column 33 is horizontally and vertically welded on the bottom end surface of the transverse plate 32, and bearing seats 34 are horizontally welded at two ends of the transverse plate 32.
And then run through the bottom of 31 both sides terminal surfaces of steel frame and seted up logical notch 35, the inside level of steel frame 31 is provided with diaphragm 32, and the both ends of diaphragm 32 all run through logical notch 35, and horizontal vertical welding has spacing post 33 on the bottom face of diaphragm 32, and the equal horizontal welding in both ends of diaphragm 32 has bearing frame 34, conveniently adjusts and uses limit structure 3 according to the demand of concrete use, satisfies the installation demand.
Referring to fig. 10, screw hole lugs 36 are horizontally welded to the top of the through slot 35 on the side end surface of the steel frame 31, an adjusting screw 37 is vertically screwed in the screw hole lugs 36, the top end of the steel frame 31 is welded to the bottom surface of the door leaf frame 21, a bearing seat 34 on the end portion of the transverse plate 32 in the steel frame 31 is rotatably connected to the bottom end of the adjusting screw 37, and a limiting column 33 on the transverse plate 32 is inserted into and matched with a limiting hole 141 on the lower door frame 14.
And then the bearing seat 34 through the horizontal plate 32 tip in the steel frame 31 is connected with adjusting screw 37's bottom is rotated, and spacing post 33 on the horizontal plate 32 is pegged graft with spacing hole 141 on the lower door frame 14 and is cooperated to be convenient for adjust and use spacing installation door leaf and the door frame of limit structure 3 according to the demand of concrete use.
The working principle is as follows: when the embedded frame fireproof door with the supporting function is used, the door frame structure 1 consists of an upper door frame 11, a left door frame 12, a right door frame 13 and a lower door frame 14, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 form a rectangular frame body which is welded end to end and is used for being installed in a wall body, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 are manufactured in a split mode, the processing flow is simplified, the processing difficulty is reduced, meanwhile, when the embedded frame fireproof door is specifically used and installed, the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 are installed in the wall body in a matched mode in a mode that the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14 need to be poured, reinforcing steel bars on the preset reinforcing steel bar beams horizontally penetrate through connecting holes 17 and through, meanwhile, the door leaf structure 2 is rotatably connected inside the rectangular frame body of the door frame structure 1, so that the door leaf structure 2 is convenient to rotate and match, when the door leaf frame 21 on the door leaf structure 2 is closed, the insertion rods 27 on the outer side end face of the door leaf frame 21 are inserted into the insertion holes 19 on the convex plates 18 of the upper door frame 11, the left door frame 12, the right door frame 13 and the lower door frame 14, so that the support connection stability of the door leaf frame 21 and the door frame structure 1 is improved, meanwhile, a plurality of support plates 23 are horizontally arranged inside the door leaf frame 21 along the vertical direction, the support plates 23 are integrally formed with the door leaf frame 21, support columns 24 are horizontally, uniformly and vertically arranged inside the door leaf frame 21, two ends of each support column 24 vertically penetrate through the support plates 23 and are respectively welded on the upper end face and the lower end face inside the door leaf frame 21, asbestos blocks 25 are filled on the inner support plates 23, improve the bulk strength of door leaf prevent deformation simultaneously, be favorable to supporting when closing through backup pad 23 and support column 24, all pack simultaneously on the inside backup pad 23 of door leaf frame 21 has asbestos piece 25, improve the fire-proof heat-proof quality, and then can prevent fire door's door frame and wall body through the connected mode fixed mounting of pre-buried formula, thereby reach and do not have the gap with the wall body installation, and have the supporting role to the wall body, thereby promote the fire behavior that prevents fire door installation and use and reduce the potential safety hazard in the concrete use, thereby expand the supporting role of some fire doors to the wall body that shows.
The device that obtains through above-mentioned design has satisfied one kind basically can be through the connected mode fixed mounting of pre-buried formula prevent fire door frame and wall body, thereby reach and do not have the gap with the wall body installation, and have a supporting role to the wall body, thereby promote the fire proofness of preventing fire door installation use and reduce the potential safety hazard in the specific use, thereby expand the use that has a supporting role's pre-buried formula frame prevent fire door of preventing fire door to the supporting role of wall body that shows, but the purpose of further perfecting its function at present, the designer has carried out further improvement to the device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a fire door is prevented to pre-buried formula frame with supporting role, includes door frame structure (1) and door leaf structure (2), its characterized in that: the door frame structure (1) is pre-buried in the installation wall body, and door frame structure (1) comprises last door frame (11), left door frame (12), right door frame (13) and lower door frame (14), go up door frame (11), left door frame (12), right door frame (13) and lower door frame (14) end to end welding and constitute the rectangular frame body, and the rectangular frame body internal rotation of door frame structure (1) is connected with door leaf structure (2), limit structure (3) are installed to the one side that is close to door leaf structure (2) medial surface on the bottom surface of door leaf structure (2).
2. The pre-buried frame fireproof door with the supporting function according to claim 1, wherein the outer side end faces of the upper door frame (11), the left door frame (12), the right door frame (13) and the lower door frame (14) are all provided with U-shaped grooves, connecting reinforcing plates (16) are horizontally and uniformly and vertically welded in the grooves of the upper door frame (11) and the lower door frame (14), the connecting reinforcing plates (16) are vertically and uniformly and horizontally and vertically welded in the grooves of the left door frame (12) and the right door frame (13), connecting holes (17) are horizontally and uniformly and vertically welded on the connecting reinforcing plates (16) of the upper door frame (11), the left door frame (12), the right door frame (13) and the lower door frame (14), perforated columns (15) are horizontally and uniformly and vertically welded on two sides of the grooves of the upper door frame (11) and the lower door frame (14), the perforated columns (15) are vertically and uniformly and vertically welded on two sides of the grooves of the left door frame (12) and the right door frame (13), and the top end of the through hole column (15) is provided with a through hole in a penetrating way.
3. The pre-buried frame fireproof door with supporting function according to claim 2, convex plates (18) are arranged on the inner side end surfaces of the upper door frame (11), the left door frame (12), the right door frame (13) and the lower door frame (14) and are vertical to the inner end surfaces, and the upper door frame (11), the left door frame (12), the right door frame (13), the lower door frame (14) and the convex plate (18) are integrally formed, the inner side end surface of the convex plate (18) horizontally penetrates through the outer side end surface and is provided with an insertion hole (19), and the jacks (19) on the convex plate (18) are uniformly arranged, cylindrical aluminum sleeves (191) are arranged in the jacks (19), the outer diameter of the aluminum sleeve (191) is smaller than the inner diameter of the jack (19), the aluminum sleeve (191) is fixed in the jack (19) through an aluminum rod in a welding way, and a gypsum layer (192) is filled between the outer wall of the aluminum sleeve (191) and the inner wall of the jack (19).
4. The pre-buried frame fireproof door with the supporting function according to claim 3, wherein the upper door frame (11), the left door frame (12), the right door frame (13) and the lower door frame (14) are all made of steel materials, the rotating shaft sleeve seats (121) are horizontally and symmetrically welded on the inner sides of the opposite end surfaces of the left door frame (12), the slots (131) are horizontally formed in the middle of the inner sides of the opposite end surfaces of the right door frame (13) in a penetrating mode, and the limiting holes (141) are transversely and uniformly formed in the inner sides of the tops of the lower door frame (14) in a penetrating mode.
5. The pre-buried frame fireproof door with the supporting function according to claim 4, wherein the door leaf structure (2) comprises a door leaf frame (21), supporting plates (23), supporting columns (24) and an asbestos plate (25), the door leaf frame (21) is a steel factory rectangular body with a hollow interior, the length of the door leaf frame (21) is equal to the vertical distance between the upper door frame (11) and the lower door frame (14), the width of the door leaf frame (21) is equal to the horizontal distance between the left door frame (12) and the right door frame (13), rotating shafts (22) are symmetrically welded on one side of the door leaf frame (21) close to the left door frame (12), the rotating shafts (22) are in rotating and inserting fit with rotating shaft sleeve seats (121) on the inner side of the left door frame (12), and a plurality of supporting plates (23) are horizontally arranged in the vertical direction in the door leaf frame (21), and integrated into one piece between backup pad (23) and door leaf frame (21), the inside of door leaf frame (21) transversely evenly vertically is provided with support column (24), and the both ends of support column (24) are vertically run through backup pad (23) and are welded respectively on the inside upper and lower terminal surface of door leaf frame (21), all pack on inside backup pad (23) of door leaf frame (21) asbestos piece (25).
6. The pre-buried frame fireproof door with the supporting function as claimed in claim 5, wherein the outer end face of the door leaf frame (21) is welded with a fireproof groove frame (26), the fireproof groove frame (26) is a rectangular frame body with two end faces penetrating through, the length of the fireproof groove frame (26) is equal to the vertical distance between the convex plates (18) of the upper door frame (11) and the lower door frame (14), the width of the fireproof groove frame (26) is equal to the horizontal distance between the convex plates (18) of the left door frame (12) and the right door frame (13), the inside of the fireproof groove frame (26) is transversely and vertically provided with reinforcing plates (261) uniformly, two ends of the reinforcing plates (261) are welded on the upper end face and the lower end face inside of the fireproof groove frame (26), and fireproof cement blocks (262) are filled between the reinforcing plates (261) inside the fireproof groove frame (26).
7. The pre-buried frame fireproof door with the supporting function as claimed in claim 5, wherein an inserting rod (27) is uniformly and vertically welded to the outer portion of the fireproof groove frame (26) on the outer end face of the door leaf frame (21), the inserting rod (27) is matched and inserted with the inserting holes (19) in the upper door frame (11), the left door frame (12), the right door frame (13) and the lower door frame (14), the vertical section of the inserting rod (27) is circular, the outer diameter of the inserting rod (27) is the same as the inner diameter of the aluminum sleeve (191), the inserting frame (28) is vertically welded in the middle of the inner end face of the door leaf frame (21) in a penetrating mode, an inserting arm (29) is horizontally inserted in the inserting frame (28), and the outer end of the inserting arm (29) is matched and inserted with the inserting groove (131) in the right door frame (13).
8. The pre-buried frame fireproof door with the supporting function according to claim 5, wherein the limiting structure (3) is vertically installed on the inner side of the bottom surface of the door leaf frame (21), the limiting structure (3) comprises a steel frame (31) and a transverse plate (32), the steel frame (31) is a cuboid structure with a hollow inner bottom end surface penetrating through, a through notch (35) is formed in the bottom end of the two side end surfaces of the steel frame (31) in a penetrating mode, the transverse plate (32) is horizontally arranged inside the steel frame (31), the two ends of the transverse plate (32) penetrate through the through notch (35), the limiting columns (33) are transversely and vertically welded on the bottom end surface of the transverse plate (32), and the bearing seats (34) are horizontally welded on the two ends of the transverse plate (32).
9. The pre-buried frame fireproof door with the supporting function according to claim 6, wherein a screw hole ear plate (36) is horizontally welded on the top of a through notch (35) on the side end surface of the steel frame (31), an adjusting screw rod (37) is vertically and threadedly connected in the screw hole ear plate (36), the top end of the steel frame (31) is welded on the bottom surface of the door leaf frame (21), a bearing seat (34) on the end portion of a transverse plate (32) in the steel frame (31) is rotatably connected with the bottom end of the adjusting screw rod (37), and a limiting column (33) on the transverse plate (32) is in inserted fit with a limiting hole (141) on the lower door frame (14).
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| CN201911312315.9A CN111075324B (en) | 2019-12-18 | 2019-12-18 | Pre-buried formula frame prevents fire door with supporting role |
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| CN201911312315.9A CN111075324B (en) | 2019-12-18 | 2019-12-18 | Pre-buried formula frame prevents fire door with supporting role |
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| CN111075324A true CN111075324A (en) | 2020-04-28 |
| CN111075324B CN111075324B (en) | 2021-02-26 |
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| CN111946201A (en) * | 2020-08-24 | 2020-11-17 | 广州地铁设计研究院股份有限公司 | High-speed rail transit interval communication channel fireproof door anchoring type door frame and installation method |
| CN112610128A (en) * | 2020-11-23 | 2021-04-06 | 宜兴市云顶机械科技有限公司 | Installation auxiliary device for fire protection device |
| CN114033069A (en) * | 2021-12-09 | 2022-02-11 | 江苏晟唐合智建筑设计有限公司 | Structure for hiding width of door frame by wall |
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| CN111075324B (en) | 2021-02-26 |
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Denomination of invention: A pre embedded frame fire door with supporting function Effective date of registration: 20231106 Granted publication date: 20210226 Pledgee: Bank of China Limited by Share Ltd. Taizhou branch Pledgor: TAIZHOU JINDUN SPECIAL FIRE DOOR CO.,LTD. Registration number: Y2023980063912 |