CN113685100A - Normally-open fireproof door self-locking door closer with control device - Google Patents
Normally-open fireproof door self-locking door closer with control device Download PDFInfo
- Publication number
- CN113685100A CN113685100A CN202111251452.3A CN202111251452A CN113685100A CN 113685100 A CN113685100 A CN 113685100A CN 202111251452 A CN202111251452 A CN 202111251452A CN 113685100 A CN113685100 A CN 113685100A
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- China
- Prior art keywords
- door
- fixedly connected
- fire door
- cavity
- closer
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/56—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by magnetic or electromagnetic attraction or operated by electric or electromagnetic means
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/10—Locks or fastenings for special use for panic or emergency doors
- E05B65/104—Locks or fastenings for special use for panic or emergency doors actuated in response to heat, e.g. with fusible element, bimetal, memory shape or swelling material
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/10—Locks or fastenings for special use for panic or emergency doors
- E05B65/1046—Panic bars
- E05B65/1053—Panic bars sliding towards and away form the door
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- 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
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
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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
- E06B5/164—Sealing arrangements between the door or window and its frame, e.g. intumescent seals specially adapted therefor
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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
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the 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
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
- E06B7/18—Sealing arrangements on wings or parts co-operating with the wings by means of movable edgings, e.g. draught sealings additionally used for bolting, e.g. by spring force or with operating lever
Abstract
The invention discloses a normally-open fireproof door self-locking door closer with a control device, and relates to the technical field of door closers. The self-locking door closer uses the control device and further comprises a sealing assembly, a door closer assembly and a self-locking assembly, the sealing assembly is respectively fastened and connected with the end faces of the two fireproof doors on one side away from the door hinge, one end of the door closer assembly is fastened and connected with the fireproof doors, and the other end of the door closer assembly is fastened and connected with the side wall of the fireproof doors. According to the sealing assembly, the position of the sealing plate is adjusted in a self-adaptive mode through the position change of the two first magnetic blocks in the closing process of the fireproof door, the friction loss in the door closing process is reduced, and meanwhile the sealing performance of the fireproof door is guaranteed.
Description
Technical Field
The invention relates to the technical field of door closers, in particular to a normally-open fireproof door self-locking door closer with a control device.
Background
The fire door mainly divides into three kinds, and fire door, movable fire door are prevented to normal open type, and fire door is prevented to normal close type because characteristics such as current convenience, ventilation are smooth and easy to pass through to normal open type, and the rate of utilization is more and more high. Normally open fire door keeps the open mode all the time under normal conditions, and when the conflagration appeared, fire door can self-closing, and is isolated with the burning things which may cause a fire disaster. Install controlling means and door closer on fire door is prevented to open always, but traditional prevent that fire door lacks the adjusting part of door gap department, when closing the door, if sealed face in the crack is thick, a sealed face for between the crack can produce great friction, after long live time, sealed face can appear damaged, influence the normal use of preventing fire door, if sealed face in the crack is thin, can lead to sealed not tight again, lead to the flue gas that the burning produced to reveal. On the other hand, the fire door gap is generally made of high-temperature-resistant filling materials, but the situation that local heating is too high occurs on the sealing surface in the combustion process, so that the elasticity of the sealing surface is damaged, the sealing effect is affected, the sealing is carried out by only using the filling materials, smoke is effectively prevented from leaking, and particularly when the fire door is reached by combustion, the smoke expands outwards rapidly and is easy to leak out from the gap of the sealing surface. Traditional door closer lacks self-locking function, when the conflagration has spread to prevent fire door department, prevents fire door and has completely cut off outside personnel's the field of vision, and the condition that the mistake was opened the door when leading to the conflagration to go on takes place easily.
Disclosure of Invention
The invention aims to provide a normally-open fireproof door self-locking door closer with a control device, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: fire door auto-lock door closer is prevented to open in usual with controlling means, controlling means include smoke transducer, installing support, releaser, and smoke transducer, installing support have two, and two smoke transducer, installing support are installed respectively on preventing fire door both sides wall body, are provided with the releaser on the installing support, releaser and installing support fastening connection. The control device detects whether fire occurs through the smoke sensor, and the releaser releases the fireproof door after the fire occurs.
Further, the releaser includes the electro-magnet, adsorbs piece, control box, and the control box passes through the installing support to be installed on preventing fire door both sides wall body, and electro-magnet and control box lateral wall fastening connection adsorb the piece and install on preventing fire door, adsorb a piece mounted position and electro-magnet position corresponding. Under the normal condition, prevent that the absorption piece on the fire door is adsorbed by the electro-magnet, prevent that fire door is in normally open state, when the conflagration takes place, the electro-magnet outage prevents fire door self-closing, prevents that the intensity of a fire from stretching.
Fire door auto-lock door closer is prevented to open in usual with controlling means, still include seal assembly, door closer subassembly, auto-lock subassembly, seal assembly has two, two seal assemblies respectively with two prevent fire door keep away from the terminal surface fastening connection of door hinge one side, door closer subassembly has two, door closer subassembly one end and prevent fire door fastening connection, the door closer subassembly other end with prevent fire door side wall fastening connection, auto-lock subassembly is including fixed cover, the loose pin, reset spring, fixed cover inside is provided with the cavity, fixed cover and prevent fire door side wall fastening connection, the cavity is through straight hole and external looks UNICOM, loose pin one end inserts inside the straight hole, loose pin and straight hole sliding connection, reset spring sets up in the straight hole, reset spring one end and the inside wall fastening connection reset spring other end of straight hole and loose pin fastening connection. Under the normal condition, prevent that fire door is in the state of open in usual, the releaser will prevent fire door absorption, when the conflagration breaing out, smoke transducer receives fire signal, the releaser will prevent fire door release, prevent the fire door and close, the conflagration initial stage, prevent fire door and still not stretch by the intensity of a fire around the fire door, the temperature has not reached very high yet, be filled with gas in the cavity of fixed cover inside, the gas expansion volume is not big this moment, the removable pin has not stretched out completely, the people who is in the room can pull open and prevent fire door and flee, treat that personnel flee the back, the intensity of a fire continuously stretches out, the temperature of preventing fire door department lasts and rises, the removable pin stretches out and will prevent fire door and block, avoid outside personnel to open by mistake when the intensity of a fire is great. According to the sealing assembly, the position of the sealing plate is adaptively adjusted through the position change of the two first magnetic blocks in the closing process of the fireproof door, so that the friction loss in the door closing process is reduced, and the sealing performance of the fireproof door is fully ensured. The ventilation component converts electric energy generated by the temperature difference between the inside and the outside of the fireproof door into the kinetic energy of the first magnetic block, so that the sealing performance of the fireproof door in fire is improved, and the service life of the sealing assembly is prolonged. The flabellum that sets up on the annular cog belt can promote the inside air current flow of water conservancy diversion intracavity, and the increase that the air current flows can avoid the local overheat of closing plate when the conflagration appears, and thermal even sharing can further prolong seal assembly's life. The self-locking assembly can realize self-locking when the fire is serious, and prevent external personnel from mistakenly opening the protective door when the fire is serious.
Further, the sealing assembly comprises a fixed bin, a sealing plate, a telescopic sleeve, an adjusting cavity, an adjusting spring, a first magnetic block, telescopic columns and a piston plate, wherein the fixed bin is fixedly connected with the end face of the fireproof door far away from one side of a door hinge, the adjusting cavity is arranged in the fixed bin, the piston plate is positioned in the adjusting cavity, the piston plate is slidably connected with the adjusting cavity, the first magnetic block is embedded into the adjusting cavity, one end of the adjusting spring is fixedly connected with the inner side wall of the adjusting cavity, the other end of the adjusting spring is fixedly connected with the piston plate, one end of the telescopic sleeve is fixedly connected with the outer wall face of the fixed bin far away from one side of the fireproof door, the other end of the telescopic sleeve is fixedly connected with the sealing plate, a plurality of telescopic columns are arranged in the telescopic sleeve, one end of each telescopic column is fixedly connected with the outer wall face of the fixed bin far away from one side of the fireproof door, the other end of each telescopic column is fixedly connected with the sealing plate, and one side of the adjusting spring far away from the adjusting cavity is provided with an airflow hole, the air flow hole is communicated with the interior of the adjusting cavity and the telescopic sleeve. The telescopic column is provided with larger friction force, the telescopic column cannot be moved due to the inertia force of normally opening and closing the door, when the fireproof door is closed, the first door is closed firstly, the second door is closed later, in the process of closing the second door, larger friction can be generated on the sealing surface between the door seams, after a longer service life, the sealing surface is easy to wear, so that the sealing effect of the fireproof door is influenced, in addition, under the condition of larger friction force arranged on the sealing surface, the door closing process is slower, the effective speed of the fireproof door can be influenced, if the friction force arranged on the sealing surface is smaller, the sealing is not tight, and the smoke leakage condition can be generated. The two sides of the closed gap of the two fireproof doors are respectively provided with the sealing assemblies, the two groups of sealing assemblies are arranged in opposite directions, when the second door is closed, the two first magnetic blocks are gradually close to each other, the opposite sides of the two first magnetic blocks have the same magnetism, the first magnetic blocks repel each other, the sealing plate can compress the adjusting spring under the action of repulsion force, the adjusting cavity can suck part of gas in the telescopic sleeve into the adjusting cavity, the telescopic sleeve can contract, the sealing plate can move to one side close to the fixed bin, the first magnetic blocks can buffer the closing action of the second door at the moment, large impact on the two doors in the closing process is avoided, the sealing plate in the gap of the two doors contracts to two sides, the friction force of the doors in the closing process is reduced, the smooth closing of the doors is facilitated, after the doors are closed, the two first magnetic blocks are staggered, the repulsion force between the first magnetic blocks is gradually reduced, when repulsion changes between the first magnetic path, regulating spring can promote the piston board and reset, the initial position of piston board has surpassed the median of adjusting the chamber, the face that two first magnetic paths originally deviate from has become relative face this moment, produce between the first magnetic path with original effect opposite direction's repulsion, under the repulsion effect, regulating spring is stretched, adjust the intracavity portion during gaseous being carried the expansion sleeve, the expansion sleeve outwards expands, the closing plate is laminated inseparabler each other. Through the mode, on one hand, the friction loss in the door closing process is reduced, and on the other hand, the sealing performance of the fireproof door is fully ensured.
Furthermore, a plurality of flow guide cavities are formed in the inner side of the sealing plate, ventilation parts are arranged in the flow guide cavities, a friction pad is arranged on one side, away from the telescopic sleeve, of the sealing plate, and the friction pad is fixedly connected with the sealing plate. The sealing performance between the sealing plate has been guaranteed to the friction pad, and the part of ventilating can be ventilated and cooled down to sealing plate department when the fire appears in the fire door, avoids the flue gas to expose simultaneously.
Furthermore, the ventilation component comprises a first pole piece, a second pole piece, a solenoid, an annular slideway, an annular toothed belt, a second magnetic block, a transmission unit, an airflow pipe, a fan and a retainer, wherein the first pole piece is fixedly connected with one side of the inner wall of the flow guide cavity, the second pole piece comprises two pieces, the two pieces of second pole piece are fixedly connected with the other side of the inner wall of the flow guide cavity, the two pieces of second pole piece are connected with each other through a lead, one end of the solenoid is connected with one side of the first pole piece through a lead, the other end of the solenoid is connected with one piece of second pole piece through a lead, the solenoid is fixedly connected with the lower side of the flow guide cavity through the support frame, the annular slideway passes through the two solenoids, the vertical part of the annular slideway is superposed with the solenoid, the bent part of the annular slideway is fixedly connected with the lower side of the flow guide cavity through the support frame, one end of the annular toothed belt is connected with the annular slideway in a sliding manner, and one end of the annular toothed belt, which is far away from the annular slideway, is fixedly connected with the second magnetic block, the second magnetic blocks are uniformly distributed on the annular toothed belt, one end of the transmission unit is rotatably connected with the flow guide cavity, the other end of the transmission unit is rotatably connected with the airflow pipe, a fan is arranged in the airflow pipe, a rotating shaft of the fan is rotatably connected with the retainer, and the retainer is fixedly connected with the inner side wall of the airflow pipe. When a fire disaster happens inside the fireproof door, a large temperature difference value can be generated between the first pole piece and the second pole piece, directional current can be generated in the solenoids under the action of temperature difference, the two solenoids are connected in series on a circuit in an inverted mode to generate an annular magnetic field in the two solenoids, the annular slide way is arranged along the direction of the magnetic field, the second magnetic block is arranged in a proper direction, the second magnetic block can be pushed by electromagnetic force in the annular magnetic field, electric energy generated by the temperature difference between the inside and the outside of the fireproof door is converted into kinetic energy of the second magnetic block, the second magnetic block drives the annular toothed belt to rotate, the annular toothed belt drives the transmission unit to rotate in the rotating process, the transmission unit continuously inputs outside airflow into the fireproof door through the airflow pipe, multi-strand jet impact can be generated in gaps of the fireproof door, the outside jet and flue gas diffused outwards in the fireproof door generate opposite impact, and a gas protective layer is generated on the surface of the fireproof door, avoid the flue gas to reveal outside the fire door, on the other hand, outside air current also can reduce the temperature of closing plate, avoids seal assembly to appear elasticity loss because of the high temperature, influences sealed effect. The airflow pipe is provided with a one-way valve, so that the possibility of smoke leakage is further reduced. According to the invention, the sealing performance of the fireproof door in fire is improved in such a way, and the service life of the sealing assembly is prolonged.
Furthermore, the transmission unit comprises a rotating shaft, a transmission gear, a first bevel gear and a second bevel gear, one end of the rotating shaft is rotatably connected with the flow guide cavity, the other end of the rotating shaft extends into the airflow pipe, one end of the rotating shaft extending into the airflow pipe is rotatably connected with the airflow pipe, the transmission gear is fixedly connected with the rotating shaft, the transmission gear is meshed with the annular toothed belt, the first bevel gear is fixedly connected with one end of the rotating shaft extending into the airflow pipe, the second bevel gear is fixedly connected with a rotating shaft of the fan, and the second bevel gear is meshed with the first bevel gear. The annular toothed belt drives the transmission gear to rotate in the rotating process, the transmission gear drives the rotating shaft to rotate, the rotating shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the fan to rotate, and external airflow is input into the fire door in the rotating process of the fan.
Furthermore, the annular toothed belt is provided with fan blades, the fan blades are provided with a plurality of fan blades, and the plurality of fan blades are uniformly distributed on one surface of the annular toothed belt, which is far away from the gear teeth. The specific position of flabellum is not shown in the description of the drawing, and when the annular toothed belt rotates under the action of magnetic field force, the flabellum can promote the air current flow in the diversion cavity, the increase of the air current flow can avoid local overheating of the sealing plate when a fire disaster occurs, and the service life of the sealing assembly can be effectively prolonged by uniform heat distribution.
Further, the door closer assembly comprises a movable toothed block, a deflection gear, a deflection shaft, a first hinge rod, a second hinge rod, a connecting sheet, a mounting sleeve and a compression spring, wherein the movable toothed block, the compression spring and the deflection gear are arranged in the mounting sleeve, the movable toothed block is in sliding connection with a cavity in the mounting sleeve, one end of the compression spring is in fastening connection with one end of the cavity in the mounting sleeve, the other end of the compression spring is in fastening connection with the movable toothed block, the deflection shaft penetrates through the mounting sleeve, the deflection shaft is in rotating connection with the mounting sleeve, the deflection gear is in fastening connection with the deflection shaft, gear teeth of the deflection gear are meshed with gear teeth of the movable toothed block, one end of the first hinge rod is in fastening connection with the deflection shaft, the other end of the first hinge rod is in rotating connection with one end of the second hinge rod, far away from the first hinge rod, is in rotating connection with the connecting sheet, one end of the connecting sheet, far away from the second hinge rod, is in fastening connection with the connecting sheet, the outer side wall of the mounting sleeve is fixedly connected with the side wall body of the fireproof door. When not catching fire, prevent that fire door is adsorbed by the releaser, compression spring is compressed, and when the conflagration breaing out, the releaser releases prevents fire door, and compression spring promotes the removal of movable tooth piece, and the movable tooth piece drives the gear rotation that deflects, and the gear that deflects drives the rotation of deflection axle, and the deflection axle makes the contained angle increase between first hinge bar, the second hinge bar, prevents that fire door is closed.
Compared with the prior art, the invention has the following beneficial effects: according to the sealing assembly, the position of the sealing plate is adaptively adjusted through the position change of the two first magnetic blocks in the closing process of the fireproof door, so that the friction loss in the door closing process is reduced, and the sealing performance of the fireproof door is fully ensured. The ventilation component converts electric energy generated by the temperature difference between the inside and the outside of the fireproof door into kinetic energy of the second magnetic block, thereby not only improving the sealing performance of the fireproof door in case of fire, but also prolonging the service life of the sealing assembly. The flabellum that sets up on the annular cog belt can promote the inside air current flow of water conservancy diversion intracavity, and the increase that the air current flows can avoid the local overheat of closing plate when the conflagration appears, and thermal even sharing can further prolong seal assembly's life. The self-locking assembly can realize self-locking when the fire is serious, and prevent external personnel from mistakenly opening the protective door when the fire is serious.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall construction of the door closer assembly of the present invention;
FIG. 3 is a side sectional view A-A of FIG. 2;
FIG. 4 is a partial cross-sectional view of the seal assembly of the present invention;
FIG. 5 is a sectional view showing the inner structure of the sealing plate of the present invention;
FIG. 6 is a side sectional view B-B of FIG. 5;
FIG. 7 is an enlarged view of a portion of FIG. 6 at C;
FIG. 8 is an illustration of the internal structure of the gas flow tube of the present invention;
in the figure: 1-smoke sensor, 2-mounting bracket, 3-releaser, 31-electromagnet, 32-adsorption block, 33-control box, 4-sealing component, 41-fixing bin, 42-sealing plate, 421-diversion cavity, 422-ventilation component, 4221-first pole piece, 4222-second pole piece, 4223-solenoid, 4224-annular slideway, 4225-annular toothed belt, 4226-first magnet, 4227-transmission unit, 42271-rotating shaft, 42272-transmission gear, 42273-first bevel gear, 42274-second bevel gear, 4228-airflow pipe, 4229-fan, 423-friction pad, 43-telescopic sleeve, 44-adjusting cavity, 45-adjusting spring, 46-second magnet, 47-telescopic column, 48-piston plate, 5-door closer component, 51-movable tooth block, 52-deflection gear, 53-deflection shaft, 54-first hinge rod, 55-second hinge rod, 56-connecting piece, 57-mounting sleeve, 58-compression spring, 6-self-locking component, 61-fixing sleeve and 62-movable pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides the following technical solutions:
as shown in fig. 1 and 4, the normally-open fire door self-locking door closer with the control device comprises two smoke sensors 1, two mounting brackets 2 and two releasers 3, wherein the two smoke sensors 1 and the two mounting brackets 2 are respectively mounted on two side walls of the fire door, the releasers 3 are arranged on the mounting brackets 2, and the releasers 3 are fixedly connected with the mounting brackets 2. The control device detects whether a fire occurs by the smoke sensor 1, and the releaser 3 releases the fireproof door after the fire occurs.
As shown in fig. 1, the releaser 3 includes an electromagnet 31, an adsorption block 32, and a control box 33, the control box 33 is installed on the two side walls of the fire door through a mounting bracket, the electromagnet 31 is fastened to the outer side wall of the control box 33, the adsorption block 32 is installed on the fire door, and the installation position of the adsorption block 32 corresponds to the position of the electromagnet 31. Under the normal condition, prevent that the last absorption piece 32 of fire door is adsorbed by electro-magnet 31, prevent that fire door is in normally open state, when the conflagration takes place, electro-magnet 31 cuts off the power supply, prevents that fire door self-closing from stretching.
As shown in fig. 1 and 4, the normally open fire door self-locking door closer with a control device comprises two sealing assemblies 4, a door closer assembly 5 and a self-locking assembly 6, wherein the two sealing assemblies 4 are respectively fastened and connected with the end surfaces of the two fire doors far away from the door hinge, the two door closer assemblies 5 are provided, one end of each door closer assembly 5 is fastened and connected with the fire door, the other end of each door closer assembly 5 is fastened and connected with the side wall of the fire door, the self-locking assembly 6 comprises a fixed sleeve 61, a movable pin 62 and a reset spring, a cavity is arranged inside the fixed sleeve 61, the fixed sleeve 61 is fastened and connected with the side wall of the fire door, the cavity is communicated with the outside through a straight hole, one end of the movable pin 62 is inserted into the straight hole, the movable pin 62 is slidably connected with the straight hole, and the reset spring is arranged in the straight hole, one end of the return spring is fixedly connected with the inner side wall of the straight hole, and the other end of the return spring is fixedly connected with the movable pin 62. Under the normal condition, prevent that fire door is in the state of open in usual, releaser 3 will prevent that fire door adsorbs, when the conflagration breaing out, smoke transducer 1 receives fire signal, releaser 3 will prevent that fire door releases, the fire door is closed, the conflagration initial stage, prevent that fire door still has spread by the intensity of a fire around, the temperature has not reached very high yet, be filled with gas in the cavity of fixed cover 61 inside, the gas expansion volume is not big this moment, activity round pin 62 has not stretched out completely, the people who is in the room can pull open and prevent fire door and flee, treat that personnel flee the back, the intensity of a fire continuously stretches over, the temperature of preventing fire door department lasts to rise, activity round pin 62 stretches out and blocks preventing fire door, avoid outside personnel to open by mistake when the intensity of a fire is great. According to the sealing assembly 4, the position of the sealing plate 42 is adaptively adjusted through the position change of the two first magnetic blocks 4226 in the closing process of the fireproof door, so that the friction loss in the door closing process is reduced, and the sealing performance of the fireproof door is fully ensured. The ventilation component 422 of the invention converts the electric energy generated by the temperature difference between the inside and the outside of the fire door into the kinetic energy of the first magnetic block 4226, thereby not only improving the sealing performance of the fire door in case of fire, but also prolonging the service life of the sealing component 4. The fan blades arranged on the annular toothed belt 4225 can promote the airflow inside the flow guide cavity 421 to flow, the increase of the airflow can avoid local overheating of the sealing plate 42 when a fire disaster occurs, and the service life of the sealing assembly 4 can be further prolonged by uniform distribution of heat. The self-locking assembly 6 can realize self-locking when the fire is serious, and prevent external personnel from mistakenly opening the protective door when the fire is serious.
As shown in fig. 4, the sealing assembly 4 includes a fixed bin 41, a sealing plate 42, a telescopic sleeve 43, an adjusting cavity 44, an adjusting spring 45, a first magnetic block 46, a telescopic column 47, a piston plate 48, the fixed bin 41 and the end surface of the fireproof door far away from the door hinge are fastened, the adjusting cavity 44 is arranged inside the fixed bin 41, the piston plate 48 is located inside the adjusting cavity 44, the piston plate 48 is slidably connected with the adjusting cavity 44, the first magnetic block 46 is embedded inside the adjusting cavity 44, one end of the adjusting spring 45 is fastened with the inner side wall of the adjusting cavity 44, the other end of the adjusting spring 45 is fastened with the piston plate 48, one end of the telescopic sleeve 43 is fastened with the outer wall surface of the fixed bin 41 far away from the fireproof door, the other end of the telescopic sleeve 43 is fastened with the sealing plate 42, a plurality of telescopic columns 47 are arranged in the telescopic sleeve 43, one end of the telescopic column 47 is fastened with the outer wall surface of the fixed bin 41 far away from the fireproof door, the other end of the telescopic column 47 is fixedly connected with the sealing plate 42, and one side of the interior of the adjusting cavity 44, which is far away from the adjusting spring 45, is provided with an airflow hole which communicates the adjusting cavity 44 with the interior of the telescopic sleeve 43. The telescopic column 47 provided by the invention has large friction force, the telescopic column 47 cannot be moved due to the inertia force of normally opening and closing the door, when the fireproof door is closed, the first door is closed firstly, the second door is closed later, in the process of closing the second door, large friction can be generated on the sealing surface between the door seams, after a long service time, the sealing surface is easy to wear, so that the sealing effect of the fireproof door is influenced, in addition, under the condition of large friction force on the sealing surface, the door closing process is slow, the effective speed of the fireproof door can be influenced, if the friction force on the sealing surface is small, the sealing is not tight, and smoke leakage occurs. According to the invention, two sealing assemblies 4 are respectively arranged at two sides of a closed gap of two fireproof doors, the two sealing assemblies 4 are arranged in opposite directions, when a second door is closed, two first magnetic blocks 46 are gradually close to each other, the magnetism of the opposite sides of the two first magnetic blocks 46 is the same, the first magnetic blocks repel each other, a sealing plate 42 compresses an adjusting spring 45 under the action of repulsive force, a part of gas in an expansion sleeve 43 is sucked into the adjusting cavity 44 by the adjusting cavity 44, the expansion sleeve 43 contracts, the sealing plate 42 moves towards one side close to a fixed bin 41, the first magnetic blocks 46 buffer the closing action of the second door, so that the two doors are prevented from being greatly impacted in the closing process, meanwhile, the sealing plates at the gap of the two doors contract towards two sides, the friction force of the doors is reduced in the closing process, the smooth closing of the doors is facilitated, and after the doors are closed, two first magnetic blocks 46 are dislocated, the repulsive force between the first magnetic blocks 46 is gradually reduced, when the repulsive force between the first magnetic blocks 46 is changed, the adjusting spring 45 can push the piston plate 48 to reset, the initial position of the piston plate 48 exceeds the intermediate value of the adjusting cavity 44, the original surfaces deviating from of the two first magnetic blocks 46 become opposite surfaces at the moment, the repulsive force opposite to the original acting direction is generated between the first magnetic blocks 46, under the action of the repulsive force, the adjusting spring 45 is stretched, part of gas inside the adjusting cavity 44 is conveyed to the telescopic sleeve 43, the telescopic sleeve 43 expands outwards, and the sealing plate 42 is attached to each other more tightly. Through the mode, on one hand, the friction loss in the door closing process is reduced, and on the other hand, the sealing performance of the fireproof door is fully ensured.
As shown in fig. 5, a plurality of flow guiding cavities 421 are formed in the inner side of the sealing plate 42, a ventilation member 422 is formed in each flow guiding cavity, a friction pad 423 is formed on one side of the sealing plate, which is far away from the telescopic sleeve 43, and the friction pad 423 is tightly connected with the sealing plate 42. The friction pad 423 ensures the sealing performance between the sealing plates 42, and the ventilation component 422 can ventilate and cool the sealing plates 42 when a fire disaster occurs in the fire door, and simultaneously, the smoke is prevented from being exposed.
As shown in fig. 5-7, the ventilation component 422 includes a first pole piece 4221, a second pole piece 4222, a solenoid 4223, a circular slideway 4224, a circular toothed belt 4225, a second magnet 4226, a transmission unit 4227, an air flow pipe 4228, a fan 4229 and a holder, the first pole piece 4221 is fastened and connected with one side of the inner wall of the diversion cavity 421, the second pole piece 4222 is fastened and connected with the other side of the inner wall of the diversion cavity 421, the two second pole pieces 4222 are connected with each other through a lead, two solenoids 4223 are provided, one end of the solenoid 4223 is connected with one side of the first pole piece 4221 through a lead, the other end of the solenoid 4223 is connected with one second pole piece 4222 through a lead, the solenoid 4223 is fastened and connected with the lower side of the diversion cavity 421 through a support frame, the circular slideway 4224 passes through the two solenoids 4223, the vertical portion of the circular slideway 4224 is overlapped with the solenoid 4223, the bent portion of the circular slideway 4224 is fastened and connected with the lower side of the diversion cavity 421 through a support frame, one end of an annular toothed belt 4225 is connected with an annular slide rail 4224 in a sliding mode, one end, far away from the annular slide rail 4224, of the annular toothed belt 4225 is fixedly connected with a second magnetic block 4226, the number of the second magnetic blocks 4226 is multiple, the second magnetic blocks 4226 are evenly distributed on the annular toothed belt 4225, one end of a transmission unit 4227 is rotatably connected with a flow guide cavity 421, the other end of the transmission unit 4227 is rotatably connected with an air flow pipe 4228, a fan 4229 is arranged in the air flow pipe 4228, a rotating shaft of the fan 4229 is rotatably connected with a retainer, and the retainer is fixedly connected with the inner side wall of the air flow pipe 4228. When a fire disaster happens inside the fire door, a large temperature difference value can be generated between the first pole piece 4221 and the second pole piece 4222, directional current can be generated in the solenoid 4223 under the action of the temperature difference, the two solenoids 4223 are connected in series on a circuit in an inverted mode, an annular magnetic field can be generated in the two solenoids 4223, the annular slideway 4224 is arranged along the direction of the magnetic field, the second magnet 4226 is arranged in a proper direction, the second magnet 4226 can be pushed by electromagnetic force in the annular magnetic field, electric energy generated by the temperature difference between the inside and the outside of the fire door is converted into kinetic energy of the second magnet, the second magnet 4226 drives the annular toothed belt 4225 to rotate, the annular toothed belt 4225 drives the transmission unit 4227 to rotate in the rotating process, the transmission unit 4227 continuously inputs outside airflow into the fire door through the airflow pipe 4228, multi-strand jet impact can be generated in gaps of the fire door, and external jet and smoke diffused outwards generates impact, produce gaseous inoxidizing coating on fire door's surface, avoid the flue gas to reveal outside the fire door, on the other hand, outside air current also can reduce the temperature of closing plate 42, avoids seal assembly 4 to appear the elasticity loss because of the high temperature, influences sealed effect. The gas flow pipe 4228 is provided with a one-way valve, so that the possibility of smoke leakage is further reduced. According to the invention, the sealing performance of the fireproof door in fire is improved in such a way, and the service life of the sealing assembly is prolonged.
As shown in fig. 5 to 7, the transmission unit 4227 includes a rotation shaft 42271, a transmission gear 42272, a first bevel gear 42273, and a second bevel gear 42274, one end of the rotation shaft 42271 is rotatably connected with the flow guiding chamber 421, the other end of the rotation shaft 42271 extends into the air flow pipe 4228, one end of the rotation shaft 42271 extends into the air flow pipe 4228 and is rotatably connected with the air flow pipe 4228, the transmission gear 42272 and the rotation shaft 42271 are tightly connected, the transmission gear 42272 and the annular toothed belt 4225 are engaged with each other, the first bevel gear 42273 and one end of the rotation shaft 42271 extend into the air flow pipe 4228 and are tightly connected with each other, the second bevel gear 42274 and the rotation shaft of the fan 4229 are tightly connected, and the second bevel gear 42274 and the first bevel gear 42273 are engaged with each other. The ring-shaped toothed belt 4225 drives the transmission gear 42272 to rotate in the rotating process, the transmission gear 42272 drives the rotating shaft 42271 to rotate, the rotating shaft 42271 drives the first bevel gear 42273 to rotate, the first bevel gear 42273 drives the second bevel gear 42274 to rotate, the second bevel gear 42274 drives the fan 4229 to rotate, and external air flow is input into the fire door in the rotating process of the fan 4229.
As shown in fig. 5-7, the ring-shaped toothed belt 4225 is provided with a plurality of fan blades, and the plurality of fan blades are uniformly distributed on one surface of the ring-shaped toothed belt 4225 away from the gear teeth. The specific position of the fan blade is not shown in the drawings, when the annular toothed belt 4225 rotates under the action of magnetic field force, the fan blade can promote the air flow inside the flow guide cavity 421 to flow, the increase of the air flow can avoid local overheating of the sealing plate 42 when a fire disaster occurs, and the service life of the sealing assembly 4 can be effectively prolonged by uniform distribution of heat.
As shown in fig. 2 and 3, the door closer assembly 5 comprises a movable toothed block 51, a deflection gear 52, a deflection shaft 53, a first hinge rod 54, a second hinge rod 55, a connecting piece 56, a mounting sleeve 57 and a pressing spring 58, wherein the movable toothed block 51, the pressing spring 58 and the deflection gear 52 are arranged inside the mounting sleeve 57, the movable toothed block 51 is connected with the inner cavity of the mounting sleeve 57 in a sliding manner, one end of the pressing spring 58 is fixedly connected with one end of the inner cavity of the mounting sleeve 57, the other end of the pressing spring 58 is fixedly connected with the movable toothed block 51, the deflection shaft 53 penetrates through the mounting sleeve 57, the deflection shaft 53 is rotatably connected with the mounting sleeve 57, the deflection gear 52 is fixedly connected with the deflection shaft 53, the teeth of the deflection gear 52 are meshed with the teeth of the movable toothed block 51, one end of the first hinge rod 54 is fixedly connected with the deflection shaft 53, the other end of the first hinge rod 54 is rotatably connected with one end of the second hinge rod 55, the end of the second hinge rod 55 far away from the first hinge rod 54 is rotatably connected with the connecting piece 56, the end of the connecting piece 56 far away from the second hinge rod 55 is fixedly connected with the fireproof door, and the outer side wall of the mounting sleeve 57 is fixedly connected with the side wall of the fireproof door. When the fire is not on fire, the fireproof door is adsorbed by the releaser 3, the pressing spring 58 is compressed, when a fire breaks out, the releaser 3 releases the fireproof door, the pressing spring 58 pushes the movable toothed block 51 to move, the movable toothed block 51 drives the deflection gear 52 to rotate, the deflection gear 52 drives the deflection shaft 53 to rotate, the deflection shaft 53 enables the included angle between the first hinge rod 54 and the second hinge rod 55 to be increased, and the fireproof door is closed.
The working principle of the invention is as follows: normally, the adsorption block 32 on the fireproof door is adsorbed by the electromagnet 31, the fireproof door is in a normally open state, when a fire disaster occurs, the electromagnet 31 is powered off, the fireproof door is automatically closed, when the fireproof door is closed, the first door is firstly closed, the second door is closed, in the closing process of the second door, the two first magnetic blocks 46 are gradually close to each other, at the moment, the opposite sides of the two first magnetic blocks 46 have the same magnetism, the first magnetic blocks repel each other, the sealing plate 42 can compress the adjusting spring 45 under the action of repulsive force, the adjusting cavity 44 can pump part of gas in the telescopic sleeve 43 into the adjusting cavity 44, the telescopic sleeve 43 can contract, the sealing plate 42 can move to one side close to the fixed bin 41, at the moment, the first magnetic blocks 46 can buffer the closing action of the second door, the two doors are prevented from being greatly impacted in the closing process, and meanwhile, the sealing plate at the gap between the two doors can contract towards two sides, the door reduces at closed in-process frictional force, at the closed back of door, two first magnetic path 46 misplace, repulsion diminishes gradually between the first magnetic path 46, when repulsion changes between the first magnetic path 46, adjusting spring 45 can promote piston plate 48 to reset, piston plate 48's initial position has surpassed the median of adjusting chamber 44, the face that two first magnetic path 46 originally deviate from this moment has become relative face, produce between the first magnetic path 46 and originally act on the opposite direction's repulsion, under the repulsion effect, adjusting spring 45 is stretched, adjust the inside part gas of chamber 44 and be carried in the expansion sleeve 43, expansion sleeve 43 outwards expands, closing plate 42 is laminated inseparabler each other. When a fire disaster happens inside the fire door, a large temperature difference value is generated between the first pole piece 4221 and the second pole piece 4222, directional current can be generated in the solenoids 4223 under the action of the temperature difference, the two solenoids 4223 are connected in series on a circuit in an inverted mode, an annular magnetic field can be generated in the two solenoids 4223, the second magnetic block 4226 drives the annular toothed belt 4225 to rotate under the action of magnetic field force, the annular toothed belt 4225 drives the transmission unit 4227 to rotate in the rotating process, and the transmission unit 4227 continuously inputs outside air flow into the fire door through the air flow pipe 4228. When flame spreads to the position of the fireproof door, the movable pin 62 extends out to block the fireproof door, and the situation that an external person mistakenly opens the fireproof door when the fire is strong is avoided.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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 (7)
1. Fire door auto-lock door closer is prevented to open in usual with controlling means, its characterized in that: the control device comprises two smoke sensors (1), two mounting supports (2) and two releasers (3), wherein the two smoke sensors (1) and the two mounting supports (2) are respectively mounted on the wall bodies on the two sides of the fireproof door, the releasers (3) are arranged on the mounting supports (2), and the releasers (3) are fixedly connected with the mounting supports (2);
the releaser (3) comprises an electromagnet (31), an adsorption block (32) and a control box (33), wherein the control box (33) is installed on walls on two sides of the fireproof door through an installation support (2), the electromagnet (31) is fixedly connected with the outer side wall of the control box (33), the adsorption block (32) is installed on the fireproof door, and the installation position of the adsorption block (32) corresponds to the position of the electromagnet (31);
the self-locking door closer comprises a sealing assembly (4), two door closer assemblies (5) and two self-locking assemblies (6), the sealing assemblies (4) are respectively fastened and connected with the end faces of two fireproof doors on one sides far away from the door hinge, the door closer assemblies (5) are two, one end of each door closer assembly (5) is fastened and connected with the fireproof door, the other end of each door closer assembly (5) is fastened and connected with the side wall of the fireproof door, each self-locking assembly (6) comprises a fixing sleeve (61), a movable pin (62) and a reset spring, a cavity is arranged inside the fixing sleeve (61), the fixing sleeve (61) is fastened and connected with the side wall of the fireproof door, the cavity is communicated with the outside through a straight hole, one end of the movable pin (62) is inserted into the straight hole, the movable pin (62) is connected with the straight hole in a sliding manner, the reset spring is arranged in the straight hole, one end of the return spring is fixedly connected with the inner side wall of the straight hole, and the other end of the return spring is fixedly connected with the movable pin (62).
2. The fire door self-locking closer with the control device for the normally-open fire door according to claim 1, wherein: the sealing assembly (4) comprises a fixed bin (41), a sealing plate (42), a telescopic sleeve (43), an adjusting cavity (44), an adjusting spring (45), a first magnetic block (46), a telescopic column (47) and a piston plate (48), the fixed bin (41) is fixedly connected with the end face of the fireproof door far away from one side of a door hinge, the adjusting cavity (44) is arranged inside the fixed bin (41), the piston plate (48) is located inside the adjusting cavity (44), the piston plate (48) is in sliding connection with the adjusting cavity (44), the first magnetic block (46) is embedded inside the adjusting cavity (44), one end of the adjusting spring (45) is fixedly connected with the inner side wall of the adjusting cavity (44), the other end of the adjusting spring (45) is fixedly connected with the piston plate (48), one end of the telescopic sleeve (43) is fixedly connected with the outer wall of the fixed bin (41) far away from one side of the fireproof door, and the other end of the telescopic sleeve (43) is fixedly connected with the sealing plate (42), be provided with a plurality of flexible post (47) in flexible cover (43), the outer wall fastening connection of fire door one side is kept away from to flexible post (47) one end and fixed storehouse (41), flexible post (47) other end and closing plate (42) fastening connection, the inside one side of keeping away from regulating spring (45) of regulation chamber (44) is provided with the air current hole, the air current hole will be adjusted chamber (44) and the inside looks UNICOM of flexible cover (43).
3. The fire door self-locking closer with the control device for the normally-open fire door according to claim 2, wherein: the inner side of the sealing plate (42) is provided with a plurality of flow guide cavities (421), the flow guide cavities are internally provided with ventilation parts (422), one side of the sealing plate, which is far away from the telescopic sleeve (43), is provided with a friction pad (423), and the friction pad (423) is fixedly connected with the sealing plate (42).
4. The fire door self-locking closer with the control device for the normally-open fire door according to claim 3, wherein: the ventilation component (422) comprises a first pole piece (4221), a second pole piece (4222), a solenoid (4223), an annular slideway (4224), an annular toothed belt (4225), a second magnetic block (4226), a transmission unit (4227), an airflow pipe (4228), a fan (4229) and a retainer, wherein the first pole piece (4221) is fixedly connected with one side of the inner wall of the diversion cavity (421), the second pole piece (4222) comprises two pieces, the two pieces of the second pole piece (4222) are fixedly connected with the other side of the inner wall of the diversion cavity (421), the two pieces of the second pole piece (4222) are connected with each other through a lead, the two solenoids (4223) are provided, one end of the solenoid (4223) is connected with one side of the first pole piece (4221) through a lead, the other end of the solenoid (4223) is connected with one piece of the second pole piece (4222) through a lead, the solenoid (4223) is fixedly connected with the lower side of the diversion cavity (421) through a support frame, and the annular slideway (4224) passes through the two solenoids (4223), the vertical part of the annular slideway (4224) is coincided with the solenoid (4223), the bent part of the annular slideway (4224) is fixedly connected with the lower side of the flow guide cavity (421) through a support frame, one end of the annular toothed belt (4225) is connected with the annular slideway (4224) in a sliding mode, one end, far away from the annular slideway (4224), of the annular toothed belt (4225) is fixedly connected with a second magnetic block (4226), the number of the second magnetic blocks (4226) is multiple, the number of the second magnetic blocks (4226) are uniformly distributed on the annular toothed belt (4225), one end of the transmission unit (4227) is rotatably connected with the flow guide cavity (421), the other end of the transmission unit (4227) is rotatably connected with the air flow pipe (4228), a fan (4229) is arranged in the air flow pipe (4228), a rotating shaft of the fan (4229) is rotatably connected with the retainer, and the retainer is fixedly connected with the inner side wall of the air flow pipe (4228).
5. The fire door self-locking closer with the control device for the normally-open fire door according to claim 4, wherein: the transmission unit (4227) comprises a rotating shaft (42271), a transmission gear (42272), a first bevel gear (42273) and a second bevel gear (42274), one end of the rotating shaft (42271) is rotatably connected with the flow guide cavity (421), the other end of the rotating shaft (42271) extends into the airflow pipe (4228), one end of the rotating shaft (42271) extending into the airflow pipe (4228) is rotatably connected with the airflow pipe (4228), the transmission gear (42272) is fixedly connected with the rotating shaft (42271), the transmission gear (42272) is meshed with the annular toothed belt (4225), the first bevel gear (42273) and one end of the rotating shaft (42271) extending into the airflow pipe (4228) are fixedly connected, the second bevel gear (42274) is fixedly connected with the rotating shaft of the fan (4229), and the second bevel gear (42274) is meshed with the first bevel gear (42273).
6. The fire door self-locking closer with the control device for the normally-open fire door according to claim 4, wherein: the ring-shaped toothed belt (4225) is provided with fan blades, the fan blades are provided with a plurality of fan blades, and the fan blades are uniformly distributed on one surface of the ring-shaped toothed belt (4225) far away from the gear teeth.
7. The fire door self-locking closer with the control device for the normally-open fire door according to claim 1, wherein: the door closer component (5) comprises a movable toothed block (51), a deflection gear (52), a deflection shaft (53), a first hinge rod (54), a second hinge rod (55), a connecting piece (56), a mounting sleeve (57) and a compression spring (58), wherein the movable toothed block (51), the compression spring (58) and the deflection gear (52) are arranged inside the mounting sleeve (57), the movable toothed block (51) is in sliding connection with the inner cavity of the mounting sleeve (57), one end of the compression spring (58) is tightly connected with one end of the inner cavity of the mounting sleeve (57), the other end of the compression spring (58) is tightly connected with the movable toothed block (51), the deflection shaft (53) penetrates through the mounting sleeve (57), the deflection shaft (53) is rotatably connected with the mounting sleeve (57), the deflection gear (52) is tightly connected with the deflection shaft (53), gear teeth of the deflection gear (52) are meshed with the teeth surface of the movable toothed block (51), first articulated rod (54) one end and deflection axle (53) fastening connection, first articulated rod (54) other end and second articulated rod (55) one end are rotated and are connected, the one end and connection piece (56) of keeping away from first articulated rod (54) second articulated rod (55) are rotated and are connected, the one end and the fire door fastening connection of second articulated rod (55) are kept away from to connection piece (56), installation sleeve (57) lateral wall and fire door side wall fastening connection.
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| CN202111251452.3A CN113685100A (en) | 2021-10-27 | 2021-10-27 | Normally-open fireproof door self-locking door closer with control device |
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Cited By (1)
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| CN114394330A (en) * | 2021-12-21 | 2022-04-26 | 重庆特斯联智慧科技股份有限公司 | Warehouse locking structure of logistics robot |
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| CN205876010U (en) * | 2016-07-27 | 2017-01-11 | 梁林坤 | Linkage open in usual prevents that fire door closes door gear |
| CN206571306U (en) * | 2017-03-20 | 2017-10-20 | 闫波 | A kind of fire resistant doorsets positioning and release device |
| CN207660492U (en) * | 2017-11-15 | 2018-07-27 | 徐泽华 | A kind of fire resistant doorsets with smoke adsorption device |
| CN210087059U (en) * | 2018-10-26 | 2020-02-18 | 石家庄曾氏天安门业有限公司 | Fireproof door with electromagnetic control opening and closing device |
| CN212054389U (en) * | 2020-02-24 | 2020-12-01 | 林丽琴 | Fireproof door with good fireproof performance |
| CN212154562U (en) * | 2020-03-31 | 2020-12-15 | 北京恒业世纪科技股份有限公司 | Positioning and releasing device for fireproof door |
| CN112412297A (en) * | 2020-11-20 | 2021-02-26 | 江苏盛阳消防门业有限公司 | Reinforced high-flame-retardant smoke-isolating steel fireproof door |
| CN112983225A (en) * | 2021-02-23 | 2021-06-18 | 刘明 | Fireproof door capable of discharging smoke and facilitating escape |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114394330A (en) * | 2021-12-21 | 2022-04-26 | 重庆特斯联智慧科技股份有限公司 | Warehouse locking structure of logistics robot |
| CN114394330B (en) * | 2021-12-21 | 2024-04-05 | 重庆特斯联智慧科技股份有限公司 | Warehouse locking structure of logistics robot |
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Application publication date: 20211123 |