CN115522854B - Folding fireproof door - Google Patents
Folding fireproof door Download PDFInfo
- Publication number
- CN115522854B CN115522854B CN202211253433.9A CN202211253433A CN115522854B CN 115522854 B CN115522854 B CN 115522854B CN 202211253433 A CN202211253433 A CN 202211253433A CN 115522854 B CN115522854 B CN 115522854B
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- connecting rod
- shaft
- main
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- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 239000010720 hydraulic oil Substances 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 231100000252 nontoxic Toxicity 0.000 claims description 3
- 230000003000 nontoxic effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
- E05F15/51—Power-operated mechanisms for wings using fluid-pressure actuators for folding wings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
- E05F5/10—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops with piston brakes
-
- 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
- E06B3/48—Wings connected at their edges, e.g. foldable wings
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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
- E06B5/161—Profile members therefor
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
- E05Y2900/134—Fire doors
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention discloses a folding fireproof door which comprises a door frame fixed in a door opening, a main door rotatably arranged on the door frame through a hinge, a sub-door rotatably connected with the main door through the hinge, a double-shaft door closer fixedly arranged on the upper part of the main door, a main door connecting rod mechanism, one end of which is fixedly connected with a first transmission shaft of the double-shaft door closer, the other end of which is rotatably connected with a door frame at the top of the main door, and a sub-door connecting rod mechanism, one end of which is fixedly connected with a second transmission shaft of the double-shaft door closer, and the other end of which is rotatably connected with the sub-door; the first transmission shaft and the second transmission shaft are mutually linked and reverse in steering, so that the main door can be completely opened and the sub door can be completely opened and folded on the back of the main door at the same time. The invention can be widely applied to the upgrading and reconstruction of fireproof doors in various occasions, can realize the rapid synchronous opening of the sub-door and the main door on the premise of meeting the normal fire-fighting requirements, not only ensures the effective clear width of the evacuation channel, but also reduces the occupation of other channels after the fireproof door is opened outwards, and is safe and reliable, and has low production cost.
Description
Technical Field
The invention belongs to the technical field of fire-fighting equipment, and particularly relates to a folding fireproof door.
Background
Fire doors generally refer to doors that are positioned in some enclosed space such as stairway walkways, elevator cabins, cable shafts, smoke vents, and the like. The fireproof door has the functions of meeting the fire resistance stability and the heat insulation property in a certain time, preventing the spread and diffusion of fire and ensuring the evacuation of people, and is an essential device in fire-fighting work. The fireproof door is divided into a normally closed fireproof door and a normally open fireproof door. The normally closed fireproof door is rarely used at ordinary times, is often in a closed state, needs to be pushed by a person to be opened, can be automatically closed after passing by the person, is used for blocking invasion of strong smoke and fire when a fire disaster occurs, preventing fire from spreading, and has the functions of preventing fire, isolating smoke, blocking high temperature and the like in a certain time.
In the building design, the evacuation walkways all have clear width requirements, and when the primary and secondary fireproof doors are generally applied to the situation that the width of a door opening is large, the special double-door-leaf opposite-opening door consists of a door leaf (secondary door) with smaller width and a door leaf (primary door) with larger width. When the door is opened, the main door needs to be opened firstly, then the sub door can be opened, when the door is closed, the sub door needs to be closed firstly, then the main door can be closed, otherwise, the smoke isolation and fire prevention functions of the fire door cannot be guaranteed, so that the sub door is in a locking state in many times, only the main door can be pushed open, after the door is opened, the sub door occupies a part of the clear width of a door opening, the evacuation channel is narrowed, and the clear width of a pavement is difficult to meet fire protection and normal requirements; on the other hand, as the door opening direction of the fireproof door needs to face the evacuation direction, the door leaf of the fireproof door always takes up a part of the clear width of other walkways after being opened, and the subway station is designed as a device walkway at two ends of a platform layer track area, for example, the device walkway is limited by conditions, the width is usually 1.2m, the width of a house door opening for devices at two sides of the walkway is usually mainly 1m and 1.2m, after one 1m wide outward opening door is opened, the clear width of the walkway only remains about 0.3m clear distance, and people on the walkway behind the door cannot be evacuated, so that great potential safety hazards exist in fire protection.
When in a fire disaster, the time for personnel to safely enter the stairway is shorter, generally a few minutes, and the fireproof door and the evacuation walkway are places where personnel collect and are key links of personnel in the floor evacuation process, so that the fire door is ensured to be opened conveniently and rapidly, the space of excessive evacuation walkways or other channels is not occupied after the fire door is opened, and the fire door has important significance for ensuring that the evacuation action of the personnel is unobstructed.
Disclosure of Invention
The main purpose of the invention is to provide a folding fireproof door which can be opened synchronously and rapidly and can be folded after being opened to reduce space occupation, so as to solve the problems in the prior art.
The invention is realized in the following way:
A folding fireproof door comprises a door frame fixed in a door opening, a main door rotatably installed on the door frame through a hinge, a sub-door rotatably connected with the main door through the hinge, a double-shaft door closer fixedly installed on the upper part of the main door, a main door connecting rod mechanism, one end of which is fixedly connected with a first transmission shaft of the double-shaft door closer, the other end of which is rotatably connected with the door frame at the top of the main door, and a sub-door connecting rod mechanism, one end of which is fixedly connected with a second transmission shaft of the double-shaft door closer, and the other end of which is rotatably connected with the sub-door; the first transmission shaft and the second transmission shaft are mutually linked and are opposite in steering direction.
Preferably, the dual-shaft door closer comprises a cylinder body, a rack plunger arranged in the cylinder body in a sliding manner, a reset spring arranged at the end part of the rack plunger, one-way valves arranged at the two ends of the rack plunger and used for controlling the flow direction of hydraulic oil, and a throttle valve arranged on a runner and used for controlling the flow speed of the hydraulic oil, wherein the first transmission shaft and the second transmission shaft are respectively a first gear shaft and a second gear shaft which are rotatably arranged in the cylinder body and meshed with each other, the first gear shaft is also meshed with the rack plunger, and the first gear shaft or the second gear shaft can drive the rack plunger to horizontally move through forward rotation or reverse rotation, and compress the reset spring.
Preferably, the ratio of the number of teeth of the first gear shaft to the second gear shaft is equal to an inverse ratio of the rotation angles of the first gear shaft to the second gear shaft when the sub-door and the parent door are completely opened.
Preferably, the female door link mechanism comprises a first female door link and a second female door link, one end of the first female door link is fixedly connected with a first gear shaft of the double-shaft door closer, the other end of the first female door link is rotatably connected with one end of the second female door link, and the other end of the second female door link is rotatably connected with a door frame through a hinge.
Preferably, the installation height of the female door linkage mechanism is higher than the top of the female door leaf.
Preferably, the sub-door connecting rod comprises a first sub-door connecting rod and a second sub-door connecting rod, one end of the first sub-door connecting rod is fixedly connected with a second gear shaft of the double-shaft door closer, the other end of the first sub-door connecting rod is rotatably connected with one end of the second sub-door connecting rod, and the other end of the second sub-door connecting rod is rotatably connected with the sub-door through a hinge.
Preferably, the initial included angle between the first female door connecting rod and the second female door connecting rod is 5-35 degrees; the initial included angle of the first sub-door connecting rod and the second sub-door connecting rod is 175-145 degrees.
Preferably, the second sub-door connecting rod and the second main door connecting rod are telescopic rods with adjustable lengths.
Preferably, the door frame, the main door and the auxiliary door are all made of steel materials, and fireproof heat insulation materials which are nontoxic and harmless to human bodies are filled in the auxiliary door and the main door.
Preferably, the gap between the main door and the door frame is smaller than 3mm, and a smoke baffle plate for covering the door gap is further arranged on one side of the main door close to the sub door and one side of the sub door close to the door frame.
The folding fireproof door provided by the invention has the beneficial effects that:
1. The fireproof door is convenient to install, suitable for upgrading and reforming fireproof doors in various occasions such as shield stations, conventional stations, various markets, gymnasiums and industrial plants, not only suitable for primary and secondary fireproof doors, but also suitable for opposite-opening fireproof doors, and wide in application range.
2. The child door and the mother door are mutually linked, the fireproof door can be opened rapidly no matter the child door or the mother door is pushed, and the evacuation channel is large in net width.
3. The sub-door and the main door can be mutually folded after being completely opened, so that occupation of other channels and spaces after the fireproof door is outwards opened is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of a door leaf of a folding fireproof door in a closed state according to an embodiment of the present invention;
Fig. 2 is a top view of a door leaf of a folding fireproof door in a closed state according to an embodiment of the present invention;
fig. 3 is a schematic overall structure of a door leaf of a folding fireproof door according to an embodiment of the present invention when the door leaf is gradually pushed;
Fig. 4 is a top view of a door leaf of a folding fireproof door according to an embodiment of the present invention when the door leaf is gradually pushed;
Fig. 5 is a schematic view of the overall structure of a door leaf of a folding fireproof door according to an embodiment of the present invention when the door leaf is completely opened;
fig. 6 is a top view of a door leaf of a folding fireproof door according to an embodiment of the present invention when the door leaf is fully opened;
Fig. 7 is a schematic diagram of an internal structure of a dual-shaft door closer when a door leaf of a folding fireproof door provided by an embodiment of the invention is in a closed state;
fig. 8 is a schematic diagram of an internal structure of a dual-shaft door closer when a door leaf of a folding fireproof door is pushed open according to an embodiment of the present invention.
In the figure: 1-wall, 2-door frame, 3-mother door, 4-child door, 5-hinge, 6-smoke baffle, 7-biax door closer, 701-cylinder, 702-rack plunger, 703-first gear shaft, 704-second gear shaft, 705-return spring, 706-check valve, 707-locking speed regulating valve, 708-closing speed regulating valve, 709-back flow regulating valve, 710-runner, 801-first mother door connecting rod, 802-second mother door connecting rod, 803-first hinge seat, 901-first child door connecting rod, 902-second child door connecting rod, 903-second hinge seat.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
The invention provides a folding fireproof door which comprises a door frame 2, a main door 3, a sub door 4 and a linkage mechanism for controlling the sub door 4 and the main door 3 to open and close synchronously. Specific:
As shown in fig. 1to 6, in this embodiment, the door frame 2 is fixedly installed on the wall 1 inside the door opening by adopting a concrete pouring manner, the main door 3 is rotatably installed on the door frame 2 by a hinge 5, the sub-door 4 is rotatably connected with the main door 3 by the hinge 5, the door frame 2, the main door 3 and the sub-door 4 are made of steel materials, and fireproof heat insulation materials which are nontoxic and harmless to human bodies are filled in the sub-door 4 and the main door 3. The gap of the door gap between the main door 3 and the door frame 2 is smaller than 3mm, a smoke baffle 6 for covering the door gap is further arranged on one side, close to the sub door 4, of the main door 3 and one side, close to the door frame 2, of the sub door 4, and a fireproof flame-retardant sealing strip is further arranged on the door frame 2, which is in contact with the smoke baffle 6, so that the fireproof smoke-isolating effect of the fireproof door is further guaranteed.
As shown in fig. 7 and 8, the linkage mechanism includes a biaxial door closer 7, a female door link mechanism and a male door link mechanism, the biaxial door closer 7 is fixedly mounted on the upper portion of the female door 3 by bolts, and the biaxial door closer 7 includes a cylinder 701, a rack plunger 702, a gear shaft, a return spring 705, a check valve 706, and a throttle valve. Wherein hydraulic oil is filled in the cylinder 701, and the rack plunger 702 is slidably disposed in the cylinder 701 and can slide left and right along the cylinder 701; one end of the return spring 705 is fixed on the inner wall of the right side of the cylinder 701, the other end is connected with the end of the rack plunger 702, and when the external force is removed, the rack plunger 702 moves leftwards under the action of the elastic force of the return spring 705 to return to the original position; the two check valves 706 are reversely arranged at the left end and the right end of the rack plunger 702 and are used for controlling the flow direction of hydraulic oil when the rack plunger 702 moves; the throttle valve comprises a locking speed regulating valve 707, a closing speed regulating valve 708 which are arranged on the left side flow path 710 of the cylinder 701 and a backflow regulating valve 709 which is arranged on the right side flow path 710 of the cylinder 701, and the throttle valve is regulated so as to control the variable closing speeds of different travel sections.
The difference with the existing door closer is that two gear shafts of the double-shaft door closer 7 are respectively a first gear shaft 703 and a second gear shaft 704 (namely a first transmission shaft and a second transmission shaft), which are both rotatably installed in the cylinder 701, the first gear shaft 703 and the second gear shaft 704 are meshed with each other, the first gear shaft 703 is meshed with the rack plunger 702, and the rack plunger 702 can be driven to move horizontally and rightwards to compress the return spring 705 by rotating the first gear shaft 703 anticlockwise or rotating the second gear shaft 704 clockwise, so that synchronous opening and closing of the sub-door 4 and the main door 3 are realized by mutual linkage of the two gear shafts. And, the ratio of the number of teeth of the first gear shaft 703 to the second gear shaft 704 is equal to the ratio of the rotation angles of the first gear shaft 703 to the second gear shaft 704 when the sub door 4 and the main door 3 are completely opened, so that the sub door 4 can be completely opened and folded on the back of the main door 3 while the main door 3 is completely opened. Thereby guaranteeing the effective clear width of the evacuation channel and reducing the occupation of other channels after the fireproof door is opened outwards.
As shown in fig. 1 to 6, in this embodiment, the female door link mechanism includes a first female door link 801 and a second female door link 802, one end of the first female door link 801 is fixedly connected to the first gear shaft 703 above the dual-shaft door closer 7, the other end is rotatably connected to one end of the second female door link 802, and the other end of the second female door link 802 is rotatably connected to the door frame 2 at the top of the female door through the first hinge seat 803, so that the installation height of the female door link mechanism is higher than the top of the door leaf of the female door 3, thereby ensuring that the female door link mechanism can normally rotate, and the initial included angle between the first female door link 801 and the second female door link 802 is 5 ° to 35 °. The sub-door 4 connecting rod comprises a first sub-door connecting rod 901 and a second sub-door connecting rod 902, one end of the first sub-door connecting rod 901 is fixedly connected with a second gear shaft 704 below the double-shaft door closer 7 so as to prevent interference with the main door connecting rod mechanism, the other end of the first sub-door connecting rod 901 is rotationally connected with one end of the second sub-door connecting rod 902, the other end of the second sub-door connecting rod 902 is rotationally connected with the sub-door 4 through a second hinge base 903, and an initial included angle between the first sub-door connecting rod 901 and the second sub-door connecting rod 902 is 175-145 degrees.
Also, as a preferred embodiment, the second sub-door link 902 and the second main door link 802 are telescopic rods with adjustable lengths.
The specific working flow of the folding fireproof door provided by the invention is as follows:
When the female door 3 is pushed open, the female door 3 drives the female door link mechanism to act, the first gear shaft 703 is driven by the female door link mechanism to rotate anticlockwise, and drives the rack plunger 702 to translate rightwards, the spring is compressed in the process of right movement of the rack plunger 702, hydraulic oil in the right cavity is also pressed, the one-way valve 706 on the right side of the rack plunger 702 is closed, the one-way valve 706 on the left side is opened under the action of oil pressure, hydraulic oil in the right cavity flows into the left cavity through the one-way valve 706 on the left side, and meanwhile, the second transmission shaft meshed with the first gear shaft 703 rotates clockwise, so that the sub-door 4 can be synchronously opened along with the female door 3 through the sub-door link mechanism. Similarly, when the sub-door 4 is pushed open, the sub-door link mechanism drives the second gear shaft 704 to rotate clockwise, and the second transmission shaft also rotates reversely, so that the main door 3 can also be opened synchronously with the sub-door 4.
When the door opening process is completed, the elastic potential energy accumulated by the return spring 705 during the opening process is released, so as to push the rack plunger 702 to the left, and drive the first gear shaft 703 to rotate clockwise, the first gear shaft 703 drives the second gear shaft 704 to rotate counterclockwise, and the master door 3 and the slave door 4 are driven to close synchronously by the master door link mechanism and the slave door link mechanism. In addition, during the spring release process, as the hydraulic oil in the left cavity of the dual-shaft door closer 7 is compressed, the one-way valve 706 on the left side of the rack plunger 702 is closed, the hydraulic oil can only flow out through the gap between the cylinder 701 and the rack plunger 702 and flows back to the right cavity through the small hole on the right side of the rack plunger 702 and the runner 710 provided with the throttle valve, so that the hydraulic oil forms resistance to the spring release, thereby achieving the buffering effect through throttling, and controlling the closing speed of the door.
It is worth mentioning that the folding fireproof door provided by the invention is not only suitable for the primary and secondary fireproof doors, but also suitable for the application scene of the double-leaf opposite-opening fireproof door, and the two fireproof doors are connected together through the hinge 5 and then rotatably mounted on the door frame 2, so that the synchronous opening and closing of the two fireproof doors can be realized only through one double-shaft door closer 7, the transformation cost is low, and the application range is wide.
The above embodiments are only for illustrating the present invention, and are not limiting of the present invention. While the invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, and substitutions can be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A folding fire door, characterized in that: the door comprises a door frame fixed in a door opening, a main door rotatably installed on the door frame through a hinge, a sub-door rotatably connected with the main door through the hinge, a double-shaft door closer fixedly installed on the upper part of the main door, a main door connecting rod mechanism, one end of which is fixedly connected with a first transmission shaft of the double-shaft door closer, the other end of which is rotatably connected with the door frame at the top of the main door, and a sub-door connecting rod mechanism, one end of which is fixedly connected with a second transmission shaft of the double-shaft door closer, and the other end of which is rotatably connected with the sub-door; the first transmission shaft and the second transmission shaft are mutually linked and turn reversely;
The double-shaft door closer comprises a cylinder body, a rack plunger arranged in the cylinder body in a sliding manner, a reset spring arranged at the end part of the rack plunger, one-way valves arranged at the two ends of the rack plunger and used for controlling the flow direction of hydraulic oil, and a throttle valve arranged on a runner and used for controlling the flow speed of the hydraulic oil, wherein a first transmission shaft and a second transmission shaft are respectively a first gear shaft and a second gear shaft which are rotatably arranged in the cylinder body and meshed with each other, the first gear shaft is also meshed with the rack plunger, and the first gear shaft or the second gear shaft can drive the rack plunger to horizontally move through forward rotation or reverse rotation, and compress the reset spring.
2. A folding fire rated door according to claim 1 wherein: the ratio of the number of teeth of the first gear shaft to the second gear shaft is equal to the inverse ratio of the rotation angles of the first gear shaft to the second gear shaft when the sub-door and the parent door are completely opened.
3. A folding fire rated door according to claim 1 wherein: the female door link mechanism comprises a first female door link and a second female door link, one end of the first female door link is fixedly connected with a first gear shaft of the double-shaft door closer, the other end of the first female door link is rotatably connected with one end of the second female door link, and the other end of the second female door link is rotatably connected with a door frame through a hinge.
4. A folding fire door according to claim 3, wherein: the installation height of the female door link mechanism is higher than the top of the female door leaf.
5. A folding fire door according to claim 3, wherein: the sub-door connecting rod comprises a first sub-door connecting rod and a second sub-door connecting rod, one end of the first sub-door connecting rod is fixedly connected with a second gear shaft of the double-shaft door closer, the other end of the first sub-door connecting rod is rotatably connected with one end of the second sub-door connecting rod, and the other end of the second sub-door connecting rod is rotatably connected with the sub-door through a hinge.
6. A folding fire rated door according to claim 5 wherein: the initial included angle between the first female door connecting rod and the second female door connecting rod is 5-35 degrees; the initial included angle of the first sub-door connecting rod and the second sub-door connecting rod is 175-145 degrees.
7. A folding fire rated door according to claim 5 wherein: the second sub-door connecting rod and the second main door connecting rod are telescopic rods with adjustable lengths.
8. A folding fire door according to any one of claims 1 to 7, wherein: the door frame, the main door and the sub-door are all made of steel materials, and fireproof heat insulation materials which are nontoxic and harmless to human bodies are filled in the sub-door and the main door.
9. A folding fire door according to any one of claims 1 to 7, wherein: the gap of the door gap between the main door and the door frame is smaller than 3mm, and a smoke baffle plate for covering the door gap is further arranged on one side, close to the sub door, of the main door and one side, close to the door frame, of the sub door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211253433.9A CN115522854B (en) | 2022-10-13 | 2022-10-13 | Folding fireproof door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211253433.9A CN115522854B (en) | 2022-10-13 | 2022-10-13 | Folding fireproof door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115522854A CN115522854A (en) | 2022-12-27 |
| CN115522854B true CN115522854B (en) | 2024-04-26 |
Family
ID=84701702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211253433.9A Active CN115522854B (en) | 2022-10-13 | 2022-10-13 | Folding fireproof door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115522854B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB430756A (en) * | 1933-12-21 | 1935-06-21 | Ewen Munro Cameron | Improvements in and relating to devices for closing doors and gates |
| JPH05295955A (en) * | 1992-04-16 | 1993-11-09 | Nikkei Kk | Collapsing door |
| JPH0978931A (en) * | 1995-09-20 | 1997-03-25 | Matsushita Electric Works Ltd | Door closer |
| CN107448109A (en) * | 2017-09-18 | 2017-12-08 | 广东东泰五金精密制造有限公司 | A kind of multiple adjustment structure of furniture folding door |
| CN206844974U (en) * | 2017-05-27 | 2018-01-05 | 江西百胜智能科技股份有限公司 | A kind of fold mechanism of vertical hinged door and it is opened flat folding door |
| CN210977096U (en) * | 2019-10-09 | 2020-07-10 | 青岛富源木业有限公司 | Integrated composite door capable of preventing collision |
| CN211229972U (en) * | 2019-10-18 | 2020-08-11 | 肇庆市高要区联朗消防设备有限公司 | Linkage buffering door closer structure for double-door sliding door |
| CN112081486A (en) * | 2020-07-28 | 2020-12-15 | 黄甘雨 | Automatic door opening and closing device and control method |
| KR102231885B1 (en) * | 2019-09-26 | 2021-03-26 | 이덕신 | Door closer by crank |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014018682B3 (en) * | 2014-12-18 | 2016-06-09 | Kunststoff Kommanditgesellschaft Nehl & Co | Furniture, in particular cupboard furniture |
| CN105064855B (en) * | 2015-08-06 | 2017-01-18 | 苏州市富尔达科技股份有限公司 | Automatic door closing device for fire |
-
2022
- 2022-10-13 CN CN202211253433.9A patent/CN115522854B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB430756A (en) * | 1933-12-21 | 1935-06-21 | Ewen Munro Cameron | Improvements in and relating to devices for closing doors and gates |
| JPH05295955A (en) * | 1992-04-16 | 1993-11-09 | Nikkei Kk | Collapsing door |
| JPH0978931A (en) * | 1995-09-20 | 1997-03-25 | Matsushita Electric Works Ltd | Door closer |
| CN206844974U (en) * | 2017-05-27 | 2018-01-05 | 江西百胜智能科技股份有限公司 | A kind of fold mechanism of vertical hinged door and it is opened flat folding door |
| CN107448109A (en) * | 2017-09-18 | 2017-12-08 | 广东东泰五金精密制造有限公司 | A kind of multiple adjustment structure of furniture folding door |
| KR102231885B1 (en) * | 2019-09-26 | 2021-03-26 | 이덕신 | Door closer by crank |
| CN210977096U (en) * | 2019-10-09 | 2020-07-10 | 青岛富源木业有限公司 | Integrated composite door capable of preventing collision |
| CN211229972U (en) * | 2019-10-18 | 2020-08-11 | 肇庆市高要区联朗消防设备有限公司 | Linkage buffering door closer structure for double-door sliding door |
| CN112081486A (en) * | 2020-07-28 | 2020-12-15 | 黄甘雨 | Automatic door opening and closing device and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115522854A (en) | 2022-12-27 |
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