1605 results about "Fire door" patented technology

The invention discloses an automatic welding forming method for a fireproof door frame, and relates to the field of fireproof door frame production, and the automatic welding forming method comprises the following steps: step 1, frame splicing: two ends of a frame plate are fed into a welding box through moving through grooves, and after the lower surface is in contact with a lap plate, the end part of the frame plate is positioned between a right-angle outer coaming and a right-angle inner coaming; 2, clamping and fixing are conducted, specifically, a bidirectional motor in a clamping assembly works, so that a connected threaded rod rotates, a worm connected to the other end rotates under the action of a magnetic coupler, and a worm gear is driven to drive a shaft rod to rotate; and thirdly, cleaning and welding are conducted, after the coaming moves upwards, the top ends of the two semicircular shells are closed under pushing of two first electric telescopic cylinders to form a ring shape, and the ends, abutting against each other, of the two frame plates are sleeved with the semicircular shells, after the ends between the frames are positioned, automatic welding can be conducted at the original position without conveying, and the welding efficiency is improved. And deviation in the conveying process is avoided, and the consistency and stability of the welding quality are ensured.

The utility model discloses a steel heat insulation fireproof door, which belongs to the technical field of fireproof doors, and comprises a frame, a door plate is hinged in the frame, a plurality of U-shaped fixing plates are fixedly connected to the surface of the top end of the frame, and the U-shaped fixing plates are linearly and symmetrically distributed. The top end of the U-shaped fixing plate is fixedly connected with an L-shaped fixing plate, the other end of the L-shaped fixing plate is fixedly connected with the frame, and a bidirectional heat insulation water curtain mechanism is arranged between the L-shaped fixing plate and the U-shaped fixing plate. By arranging the bidirectional heat insulation water curtain mechanism, the water curtain can absorb heat through evaporation, reduce the temperature of a fire area and reduce the temperature of the steel fireproof door directly contacted with flames, so that the door body is prevented from excessively fast thermal expansion and deformation in a fire, and the water curtain not only can reduce the temperature, but also can effectively isolate a fire source, so that the service life of the steel fireproof door is prolonged. Direct contact of flames to the surface of the fireproof door is reduced, and fire spreading speed is inhibited.

The invention discloses a fire-fighting power box with a multifunctional self-rescue jetting device, which comprises a base, a power box body is arranged on the base, a fireproof door assembly is arranged on one side of the body, the body comprises a lower-layer electric appliance box and an upper-layer isolation rescue box, a hydraulic lifting mechanism is arranged in the center of the isolation rescue box, and the hydraulic lifting mechanism is connected with the power box. The output end of the upper portion of the hydraulic lifting mechanism is connected with a spraying device. The spraying device comprises a hollow bowl-shaped base, a conical surface cover is arranged at the upper end of the bowl-shaped base, and a vertical spraying head column is arranged at the upper end of the conical surface cover; in case of fire, shower type self-rescue spraying at the upper end of the body can be realized, so that a self-rescue safety area is formed near the power box; and meanwhile, the danger-related personnel can conveniently use the quick-release spray gun after quickly taking down the quick-release spray gun in the self-rescue safety area by matching the quick-release spray gun arranged on the conical surface cover with threaded connection and quick insertion and extraction of the operation water pipe in the lower auxiliary window.

The invention discloses a fireproof door combination welding device, and belongs to the technical field of fireproof door welding. A welding groove is formed in the rack, and two first storage racks and two second storage racks are arranged on the upper surface of the rack. A material pushing plate is arranged below each of the two first material storage racks in a sliding mode, and a material pulling plate is arranged below each of the two second material storage racks in a sliding mode. A door frame vertical rod and a door frame cross rod are stored through the symmetrical first material storage frames on the two sides and the symmetrical second material storage frames at the two ends correspondingly, and materials can be controlled to be pushed one by one through the material pushing plate and the material pulling plate sliding below and the first material forking groove and the second material forking groove formed in the material pushing plate and the material pulling plate. Through cooperative operation of the material pushing plate and the material pulling plate, the four door frame rod pieces (the vertical rods on the two sides and the transverse rods at the two ends) are accurately pushed into the welding grooves to be spliced into the fireproof door frame, then the welding assemblies are used for welding the connecting positions, full-process automatic operation of the fireproof door frame from material pushing, splicing positioning to welding forming is achieved, and the production efficiency is improved.

The invention discloses a laser machine for machining a steel fireproof door, and relates to the technical field of laser cutting machining of steel fireproof doors. The laser machine for machining the steel fireproof door comprises a bearing lathe bed, a laser cutting system arranged on the upper portion of the bearing lathe bed, two C-shaped rail seats fixedly connected to the front and back opposite sides of the bearing lathe bed correspondingly, and a groove-shaped workbench connected between the two C-shaped rail seats in a sliding mode. A self-pushing and auxiliary scraping integrated mechanism used for automatically pushing out a machined steel fireproof door blank plate and cleaning slag on a saw-shaped metal supporting strip is arranged on the left portion of the upper end face of the bearing lathe bed. The groove-shaped workbench drives the door blank plate to move back to trigger a self-scraping assembly to automatically clean slag dripping on the saw-shaped metal supporting strip. Slag accumulation and solidification are avoided, the problem of tilting or inclining is solved, it is ensured that a door blank plate is flatly placed on the workbench, a laser cutting head is perpendicular to the surface of a workpiece, it is ensured that a laser beam cuts at an accurate angle, and the accuracy of cutting machining is improved.

The invention provides a building layered slow-descent self-rescue type escape cylinder which comprises a plurality of standard knots connected in sequence, a bottom buffer is arranged below the lowest standard knot, each standard knot comprises a fireproof door, an enclosure cylinder and a damping cylinder, the fireproof door is fixedly installed on an escape platform, a connector is arranged between the enclosure cylinder and the fireproof door, the damping cylinder is arranged on the lower side of the enclosure cylinder, and the bottom buffer is arranged below the bottom buffer. The upper opening of the damping cylinder is connected with the lower opening of the enclosure cylinder, the damping cylinder is connected with the upper opening of the enclosure cylinder in the next standard knot or connected with a bottom buffer, a damping plate is arranged in the damping cylinder, a damping shaft is arranged on the damping plate, and a damping device used for driving the damping plate to slowly open and reset is arranged on the damping shaft. According to the building layered slow-descent self-rescue type escape cylinder, escape personnel are buffered by the multiple standard section damping cylinders and finally fall to the bottom layer buffer at a low speed, the bottom layer buffer provides buffering in the vertical direction, the human body slides in the horizontal direction instead of falling, and the safety of the escape personnel is guaranteed.

The utility model discloses an electric overturning poly V-belt roller machine, which is mounted at a fireproof door and comprises a mounting bracket, a main conveying frame arranged on the mounting bracket, an overturning bracket and a driving component for driving the overturning bracket to overturn around the main conveying frame, a plurality of main conveying rollers are rotationally installed on the main conveying frame, a plurality of auxiliary conveying rollers are rotationally installed on the overturning support, the main conveying frame and the overturning support are rotationally connected through the adjacent auxiliary conveying rollers, and the driving assembly is an electric push rod and is provided with a magnetic switch. After the electric push rod extends, the overturning support is overturned to the horizontal position, accurate conveying of goods is guaranteed, and after the electric push rod retracts, it is guaranteed that the fireproof door is completely closed. Compared with the prior art that a rotating shaft is driven by a motor to turn over, the turnover mechanism has the advantages that the structure is simplified, the cost is reduced, the assembly steps are simplified, and the turnover stop position is more accurate.

The invention relates to the technical field of fireproof door processing, in particular to pressure self-adjusting type fireproof door plate processing equipment and a method thereof. Comprising a machining platform, and a supporting rotary disc is arranged in the center of the top of the machining platform; a supporting frame is arranged on the top of the supporting rotary disc. When the processing equipment disclosed by the invention is used for processing the fireproof door plate, the door frame and the door leaf panel can be relatively fixed in the vertical direction, so that the self-adjusting processing mechanism can conveniently compare the difference between the door frame and the inner wall of the door frame in real time and adjust the processing pressure when processing the edge of the door leaf panel; meanwhile, when the self-adjusting machining mechanism moves to the corner of the door leaf panel, a corresponding distance sensor can sense the self-adjusting machining mechanism, and a connecting block is controlled to rotate after contact between a corresponding limiting pressing block and the door leaf panel is released, so that the edge corner of the door leaf panel is exposed for machining; the machining quality of the machining equipment is improved, and meanwhile machining blind areas are avoided.

The invention relates to the technical field of fireproof equipment, in particular to an electrically-driven translation type heavy fireproof door which comprises a door body, a driving mechanism and a translation mechanism. The translation mechanism comprises a translation base and a nut sleeve, a mounting hole and a guide hole which penetrate through the two sides of the translation base are formed in the translation base, the nut sleeve and the lead screw form a thread transmission pair, the nut sleeve is rotatably mounted in the mounting hole, the guide rod is slidably connected in the guide hole, and a synchronous assembly is arranged in the translation base; when the door body moves to the tail end of the stroke, the circumferential constraint of the synchronous assembly on the nut sleeve is automatically relieved, so that the nut sleeve can freely rotate relative to the translation base. Therefore, the motor and the transmission system do not need to overcome the huge inertia of the door body to achieve forced stopping, the instantaneous load and locked-rotor risk of the motor are remarkably reduced, and meanwhile the impact stress borne by a mechanical transmission part at the terminal is greatly relieved.

The invention discloses a steel fireproof door plate polishing device, which belongs to the technical field of fireproof door plate processing, and comprises a rack, rotating rollers uniformly and rotatably mounted along the length direction of the rack, and a housing mounted at one end of the top of the rack, conveying mechanisms are arranged at two ends in the housing, and second hydraulic cylinders are symmetrically and vertically mounted on two sides of the top in the housing. A reciprocating mechanism composed of a first shaft sleeve, a first spline shaft, a reciprocating lead screw, a second sliding block, a connecting rod and a first belt wheel assembly is arranged at the end of the grinding roller, in the process that the grinding motor is used for controlling the grinding roller to rotate, the grinding roller can be controlled to reciprocate in the axial direction, and axial movement and rotation are combined; a crossed net-shaped grinding track is formed, covering is more comprehensive, surface textures are more uniform, subsequent polishing procedures are reduced, spraying or assembling requirements are directly met, in addition, the grinding roller axially moves to enable dust to be distributed more dispersedly, the dust concentration of a working area is greatly reduced in cooperation with a negative pressure dust suction mechanism, and potential safety hazards are reduced.

The invention relates to the technical field of safety control of fire exit doors, in particular to an emergency unlocking device and system of an intelligent fireproof door. The analysis subsystem outputs a fire alarm confidence coefficient value and an operation intention intensity value; the arbitration subsystem sends a blocking signal to the automatic locking control system and activates a to-be-decoupled state of the execution subsystem when the intensity of the operation intention exceeds a threshold value; the execution subsystem synchronously adjusts a mechanical transmission stroke parameter and an electromagnetic latching current parameter according to the intensity value of the operation intention; the fault-tolerant subsystem switches the mechanical locking mechanism to a geometric dead point position to release automatic control connection; and the traceability subsystem records the operation data and maintains storage when the power supply is interrupted. According to the invention, a closed-loop control chain from signal sensing to physical decoupling is formed, the problem of authority conflict of automatic locking logic blocking manual operation is solved, and the timeliness and reliability of emergency unlocking are improved.

The invention provides a remote monitoring method and system based on a fireproof door monitoring module, and relates to the technical field of fireproof safety monitoring, and the method comprises the steps: constructing a fireproof function simulation model of a building; m fireproof door monitoring modules are pre-deployed; after M pieces of real-time state information of the M fireproof door monitoring modules are collected, the function availability of the fireproof door is judged; performing dynamic evacuation path fitting after spatial mapping of the fault fireproof door in the fireproof function simulation model; according to the fireproof influence degree, operation and maintenance priority ranking of the faulted fireproof door is carried out, and a hierarchical operation and maintenance priority sequence is output. The technical problem that the operation and maintenance management efficiency of the fireproof door is low due to the fact that the influence on the whole cannot be evaluated in time when a single fireproof door fails in the prior art is solved, collective availability judgment of the fireproof door combination is performed by monitoring the state of each fireproof door in real time and based on fire escape path fitting, and the operation and maintenance efficiency of the fireproof door combination is improved. And the operation and maintenance management efficiency of fireproof door monitoring is improved.

The invention discloses an automatic closing door closer which comprises a door closer body, an automatic closing device and an auxiliary closing device. The automatic closing device is connected with an output shaft on one side of the main body and comprises a mechanical locking mechanism composed of an angle cam, a sliding block and a supporting spring and a triggering mechanism composed of a swing connecting rod, an unlocking connecting rod and an electric driving mechanism with a gear motor, the output shaft is stably locked in a normally-open state, electric unlocking is achieved when fire signals are triggered, and the automatic closing device can automatically close the output shaft. And the door leaf is automatically closed by the door closer main body. The auxiliary closing device is connected with an output shaft on the other side of the main body and comprises a cam shaft with a concave part and a trigger assisting assembly composed of a roller, a piston and a pressure spring, and when the door leaf is closed to the angle smaller than the set angle, the roller falls into the concave part of the cam, and the pre-tightened spring elastic force is released to generate auxiliary torque. According to the fireproof door, the functions of normally-open locking and releasing and door closing tail section assisting are integrated, and the automatic closing reliability and the final leakproofness of the fireproof door in a fire disaster are remarkably improved.

The invention discloses a steel-wood composite heat insulation fireproof door, and relates to the technical field of fireproof doors. The steel-wood composite heat insulation fireproof door comprises a mounting frame structure, a fireproof door leaf structure is hinged to the inner side of the mounting frame structure, a protective observation window structure is arranged on the inner side of the fireproof door leaf structure, and a locking structure is arranged on the front side of the mounting frame structure. Through the arrangement of the fireproof door leaf structure and the combined design of the fireproof filling ceramsite layer, the fireproof perlite plate layer, the rock wool layer, the heat insulation cotton layer and the flame-retardant sealing layer in the fireproof door leaf structure, the strength and stability of the door body are enhanced, the heat insulation effect is remarkably improved, the fireproof filling ceramsite layer and the fireproof perlite plate layer serve as inner layer materials, and the fireproof filling ceramsite layer and the fireproof perlite plate layer serve as outer layer materials; the door body has excellent fire resistance and heat insulation performance, invasion of high-temperature flames and heat can be effectively blocked, the rock wool layer and the heat insulation cotton layer serve as middle layer materials, the heat insulation effect of the door body is further improved, and heat transfer is reduced.

The utility model discloses a fire door with a smoke-proof effect for a fire passage, comprising a door cover, the door cover is connected to a first door panel via a rotating shaft, the door cover is connected to a second door panel via a rotating shaft, the first door panel and the second door panel are fixedly connected to a sleeve frame on the outside, a strip plate is inlaid inside the sleeve frame, the top of the strip plate is connected to a sealing frame, a sealing plate is inlaid inside the sealing frame, and a threaded rod is arranged outside the strip plate. The fire door with a smoke-proof effect for a fire passage is provided with a sleeve frame, a strip plate, a sealing plate, a sealing frame and other structures on the outside of the door body, so that the smoke-proof effect of the fire door can be improved. When an accident occurs, after the fire door is closed, the strip plates inside the sleeve frame are moved in sequence, so that the sealing plate inside the sealing frame seals the gap, reducing the flow of smoke to the evacuated personnel, thereby reducing the impact on the personnel's body, so that the smoke-proof effect of the fire door is enhanced during use.

The present application relates to the field of door core material preparation, and particularly relates to a heat-insulating and fireproof door core material for security doors and a preparation method thereof, comprising a protective layer, a heat-insulating layer and a core part, wherein the core part comprises a plurality of springs arranged at equal intervals and fixed plates arranged at both ends of the springs; the heat-insulating layer is arranged outside the fixed plates; and the protective layer is bonded to the outside of the heat-insulating layer and is a foamed aluminum plate, which is prepared as follows: S1, cutting the fixed plates and then welding spring fixing bases and fixing buckles; S2, arranging and fixing the springs; S3, weighing the component materials of the heat-insulating layer, adding water and mixing uniformly; S4, based on a core material preparation system, sequentially completing pouring, jarring, smoothing and heat-insulating drying of the two heat-insulating layers after setting; S5, preliminarily determining whether the preparation of the heat-insulating layer meets preset standards according to the measured compressive strength; and S6, bonding the protective layer. On the basis of ensuring the performance of the core material, the present application can also be applied to the door core of security doors with different thicknesses.

An autonomous grid storage system arranged in a warehouse space. The autonomous grid storage system is divided within the warehouse space, for example on a single floor of said space, into a plurality of sub grids separated by fire walls. One or more bridges pass through openings in the fire wall to allow bin handling vehicles to traverse between the sub grids. The openings are provided with closable fire door.

The utility model discloses an A60 fireproof door for a marine ship, which comprises a left door leaf and a right door leaf which are respectively arranged on a door frame through hinges. The door frame, the left door leaf and the right door leaf are each of a structure formed by splicing a plurality of plates. The door frame, the left door leaf and the right door leaf are all filled with fireproof cotton, and fireproof rubber strips and JC rubber strips are additionally arranged. The fireproof door is applied to objects such as marine transportation energy storage containers. According to the utility model, the fireproof door can be used in severe working conditions on the sea through typical marine transportation parts; the fireproof door steel plate frame is filled with fireproof cotton to ensure that the fireproof grade is met; the door slot gap is reasonable, the fireproof door can be opened even if the fireproof door deforms while the airtightness is met, flame retardance and heat resistance are effectively achieved, and smoke is prevented from overflowing; the bottom end of the door lock is changed into a crescent lock head and a matched lock seat from a bolt type structure, so that the situation that the door is difficult to open due to deformation is further reinforced.

The utility model provides a sound insulation steel fireproof door, which belongs to the technical field of fireproof doors and comprises a door frame body. The number of the limiting frames is two, the two limiting frames are fixedly connected to the two side ends of the door frame body correspondingly, and sliding grooves are formed in the two limiting frames correspondingly; the number of the positioning assemblies is two, each positioning assembly comprises a positioning plate, two sleeves and two sliding rods, and the two sliding rods are fixedly connected to the inner wall of one side of the sliding groove; by using the device, the door frame main body is positioned by the positioning assembly, tools such as an external bracket are not needed to position the door frame main body, and the operation is simpler, more convenient and quicker.

The utility model belongs to the technical field of railway station building construction and fire protection, and particularly relates to a fireproof type shielding door machine structure which comprises a shielding door and a concrete side plate serving as an upper supporting structure, and a steel structure frame and a fireproof door machine top box are fixed on the concrete side plate. Assembly gaps among the concrete side plates, the shielding door and the steel structure frame are blocked through fireproof structures, and each fireproof structure comprises a fireproof combined component and a fireproof cloth felt. The platform screen door system can be suitable for various current railway stations, effectively solves the fireproof safety problem of passengers in the current railway stations on the platform screen door system, and ensures the safety of fire rescue. Especially for an underground atrium type railway station, adverse effects on life safety of passengers and station operation evacuation when a train fire occurs are reduced to the maximum extent.

The invention relates to the technical field of fire alarm, in particular to an intelligent fireproof door trigger alarm system and method, and the method comprises the steps: taking a fireproof door as a configuration unit according to a sensor disposed on the fireproof door, and obtaining the early warning data of each configuration unit; taking the early warning data as a decision basis, performing event triggering rule extraction on the early warning data on each configuration unit in a fuzzy theory mode, and identifying an event set at corresponding time during triggering; sorting according to the triggering time of each data in the event set, and extracting a state tag and an event influence range of each configuration unit according to the event duration of each sorting to form a range simulation diagram; and according to the position of each configuration unit in the range simulation diagram, the state of the configuration unit is updated according to the difference of the early warning data at the two sides of the configuration unit, an early warning path is formed by the updated configuration unit, and an early warning strategy corresponding to the early warning path is set. The efficiency and accuracy of fire early warning processing are realized.

The invention relates to a fire door remote debugging system and debugging method based on WiFi networking, and belongs to the technical field of fire door system debugging, the debugging system comprises a fire door system, a server and a client, the fire door system is connected with a network through a USB-WiFi module and comprises a fire door monitor, a fire door electric door closer and a fire door electromagnetic releaser; the server comprises a communication service module and a remote debugging service module; the client comprises a remote debugging platform and a mobile phone APP. The debugging method comprises an on-line debugging mode and an off-line debugging mode: in the on-line mode, the monitor communicates with the server through a TCP / IP protocol to realize remote parameter modification, state query and fault diagnosis; and in the off-line mode, the WiFi module is converted into a hotspot, and the mobile phone APP is directly connected and completes configuration issuing and debugging.

The utility model provides a hidden type fireproof door which comprises a door frame, the inner wall of the door frame is connected with a fireproof door body in a rotating mode, a sealing device is arranged on the inner wall of the door frame, a handle and fireproof glass are arranged on the outer wall of the fireproof door body, and a treading type door opening device is arranged on the inner wall of the fireproof door body. The treading type door opening device comprises a pedal and a driven gear, the driven gear is driven to rotate when a person treads the pedal, the outer wall of the driven gear is fixedly connected with one end of a handle, by treading the arranged pedal, a connecting rod is driven to move, a toothed plate is driven to move downwards, the driven gear is driven to rotate in the moving process of the toothed plate, and therefore the door is opened. And meanwhile, the handle fixedly connected with the driven gear is driven to rotate, so that the handle does not need to be manually opened by a person, and the situation that the person is scalded when the person holds the handle to open the fireproof door body in a fire disaster can be prevented.

The invention provides an installing, clamping and electric welding device for fireproof door production, and relates to the technical field of equipment for fireproof door production, the installing, clamping and electric welding device comprises a welding manipulator, clamping assemblies are arranged on the two sides of the welding manipulator, and the two ends of each clamping assembly are connected with rotating power assemblies; the clamping assembly can be driven by the rotating power assembly to rotate by 360 degrees. One face of the clamping assembly clamps welding steel, and the other face of the clamping assembly is provided with a hollowed-out hole position and a hollowed-out groove position. The door frame welding device has the beneficial effects that the welding manipulator is arranged, the clamping assemblies capable of rotating are arranged on the two sides of the welding manipulator, an operator only needs to load steel onto the clamping assemblies, and the clamping assemblies can drive the positioned steel to rotate so as to be matched with the welding manipulator to weld a door frame; therefore, the door frame does not need to be secondarily installed manually, the labor intensity of operators is reduced, machining errors caused by secondary clamping can be avoided, and the production quality of the door frame is guaranteed.

The invention relates to the technical field of fireproof doors, and discloses an intelligent monitoring device and method for a fireproof door and a fireproof door sequencer. According to the intelligent monitoring device and method for the fireproof door and the fireproof door sequencer, high-precision monitoring of the spatial attitude of a door leaf is achieved through a nine-axis IMU sensor, an encoder and a six-dimensional force sensor are combined in the sequencer, and a multi-dimensional sensing system is constructed; on the basis of a door leaf-sequencer coupling dynamics model and an LSTM life prediction algorithm, mechanical faults can be warned in advance; through a three-level early warning mechanism and LoRa emergency broadcast, a door closing strategy is dynamically adjusted in a fire disaster, the effectiveness of an escape channel is improved, the problems of single perception, rough diagnosis and linkage delay of a traditional system are solved, and the safety of a fireproof door is improved.

The utility model discloses a fireproof door closer reverse installation structure which comprises an adapter seat, a reverse installation plate and a door closer, the adapter seat is fixed on a door frame fixing keel on the outer side of a door frame door pushing face through an anchor bolt, the bottom end of the adapter seat is flush with the bottom end of the door frame door pushing face, the reverse installation plate is an L-shaped plate, and the door closer is arranged on the reverse installation plate. The outer section of a transverse plate is fixed on the adapter seat through a connecting bolt, the inner section of the transverse plate abuts against the bottom end face of the door frame, a vertical plate of the transverse plate vertically extends downwards at the outer end of the transverse plate, the door closer is arranged on the closing side of the door leaf, a machine body of the door closer is fixed on the door leaf, and a connecting seat at the tail end of a connecting rod of the door closer is fixed on the vertical plate of the reverse mounting plate. The adapter is additionally arranged in front of the door frame fixing keel (or the masonry wall lintel), a stable rooting point is provided for the door closer, the door closer is further stably installed between the door pushing face of the closing side of the door leaf and the adapter through the reverse installation plate, it is guaranteed that the door closer is good in stress, the service life of the door closer is prolonged, and construction quality is improved.

The invention discloses an adaptive positioning correction method for a tunnel environment, and the method comprises the steps: preliminarily restoring the position of a mobile device to a tunnel axis through inertial navigation, and employing inherent static features (such as a cable support, a fireproof door, and a duct piece joint) in a tunnel as a reference; and the automatic correction of the SLAM accumulative error is realized by measuring the distance from the feature object. And meanwhile, an intelligent filtering algorithm is adopted to effectively suppress dynamic object interference, so that the positioning precision and the system robustness are remarkably improved, and reliable technical support is provided for intelligent operation and maintenance of the cable tunnel.

The utility model provides a fireproof performance testing device for a fireproof door, which belongs to the technical field of fireproof door detection equipment and comprises a fixing frame, a fuel pipe arranged on the fixing frame, a plurality of fuel nozzles arranged on the fuel pipe and an auxiliary mechanism connected with the fixing frame and used for assisting detection of the fireproof door. A driving motor is arranged in the waterproof shell; a first gear is arranged on the driving motor; a rotating shaft is arranged on the left side of the mounting frame; a second gear is arranged at one end of the rotating shaft, a chain is connected to the second gear, a sliding groove is formed in the other end of the rotating shaft, and a balancing weight is arranged on one side of the sliding groove; and a lead screw motor is arranged on one side, clamping and overturning of the fireproof door are achieved through the auxiliary mechanism, on one hand, the fireproof door is clamped and fixed on the mounting plate, and on the other hand, a driving motor conducts overturning adjustment on the front face and the back face of the fireproof door through a first gear and a second gear.

The present disclosure relates to a push rod lock for a fire door and a control method thereof. The push rod lock comprises: a housing; a lock tongue; a toggle plate; a push rod; an electromagnetic telescopic assembly having a sliding pressure block that can be extended or retracted by electromagnetic control; a lock latch rotating assembly, the lock latch rotating assembly being used to unlock the door by a key; a first sensing element corresponding to the rotating block; a second sensing element corresponding to the lock tongue; a third sensing element corresponding to the push rod; a verification device; a prompting device; a controller, the input end of which is respectively connected to the first sensing element, the second sensing element, the third sensing element and the verification device signal, and the output end is respectively connected to the electromagnetic telescopic assembly and the prompting device signal. The control method is applied to the above-mentioned push rod lock. The present disclosure can realize the management of personnel entry and exit, and has multiple status detection and prompting functions, which can meet the usage needs of various types of users, and at the same time has the advantages of low energy consumption, low heat generation, long service life and high reliability.

The invention discloses a steel heat-insulation fireproof door in the field of fireproof doors, which comprises a mounting frame and a door frame connected to the side surface of the mounting frame, a rotating bracket connected to the side surface of the door frame, a rotating shaft rotatably connected to the rotating bracket, a transmission gear connected to the top of the rotating shaft, a connecting piece connected to the side surface of the rotating shaft, and a rotating door connected to the other end of the connecting piece, according to the device, the unlocking stability of the fireproof door in the high-temperature environment can be effectively improved, the influence of high temperature on the fireproof door can be avoided by adopting a sliding unlocking mode, meanwhile, the use of a lock head of a rotating structure is avoided, the safety of the fireproof door is improved, and the service life of the fireproof door is prolonged. Therefore, the risk of failure of the device is reduced.