Fireproof fire-fighting blank door with hinge connection structure

Abstract

The invention discloses a fireproof fire-fighting blank door with a hinge connection structure, and relates to the technical field of fire-fighting blank doors, and the fireproof fire-fighting blank door comprises an opening and closing mechanism, two monitoring mechanisms and two quick release mechanisms. According to the fire-fighting blank door, the design of the hinges provides double guarantees for fire-fighting safety and personnel escape, on one hand, lubricating oil is released when the storage ring is broken, friction of hinge parts can be reduced, the basic opening and closing function can be still maintained when the hinge parts are damaged, color changes are caused by flowing-out of the lubricating oil, and people can conveniently find and maintain hinge abnormity in time; on the other hand, when the hinges are damaged and cannot be replaced in time in a fire disaster, connection between the hinges and the fireproof door main body is removed through operations such as rotating the hook, so that people can directly push over the fireproof door main body to escape, and the situation that people are trapped due to hinge faults is effectively avoided; more escape opportunities are provided for people in emergency such as fire, and life safety is protected to the maximum extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting concealed doors, in particular to a fireproof fire-fighting concealed door with a hinge connection structure. BACKGROUND

[0002] A fire-fighting concealed door refers to a concealed door structure specially designed and installed to meet fire safety requirements, which is not easily directly perceived in normal state or is integrated with surrounding building decoration in appearance. The fire-fighting concealed door can be quickly opened in emergency situations such as fire to provide a passage for personnel evacuation and escape, facilitate fire personnel to enter the fire scene for fire extinguishing and rescue operations, or protect fire-fighting facilities and equipment from damage by high temperature, smoke, etc. in fire and facilitate fire personnel to quickly take and operate. The material, size, opening direction, fire resistance limit and other performance indicators of the fire-fighting concealed door need to strictly meet the requirements of relevant national fire regulations and standards to ensure that the fire-fighting concealed door can play its due fire-fighting function in fire.

[0003] At present, the fire-fighting concealed doors in many buildings generally use hinges to realize free opening and closing to meet the use requirements in daily life and emergency situations. However, the fire-fighting concealed door has special conditions. It is mostly idle and closed in daily life, unlike ordinary doors which are frequently opened and closed. This long-term idling causes the hinge to rust easily in a humid and unventilated environment. After rusting, the friction of the rotating parts of the hinge increases, and the hinge is frequently stuck, which causes the door to be difficult to open normally. In a fire, the high temperature on the scene will cause the metal of the hinge to expand and deform, the parts will be misaligned, the original matching structure will be broken, the function will be lost, and the fire rescue will be seriously hindered, and the trapped personnel will miss the opportunity to escape, thereby causing serious personnel casualties and property loss accidents. SUMMARY

[0004] The purpose of the present application is to provide a fireproof fire-fighting concealed door with a hinge connection structure. When the hinge is corroded, contaminated or deformed by high temperature, the storage ring made of ceramic will be broken under pressure, releasing the pre-stored lubricating oil to cause a pressure change, causing the dark display plate and the transparent sheet to separate, forming a sharp color difference, reminding people to timely overhaul the hinge. If the hinge is damaged in a fire, only the hook needs to be rotated and pulled to disconnect the hinge and the door body through mechanical linkage, thereby solving the problems raised in the above background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a fireproof fire-fighting concealed door with a hinge connection structure, comprising: an opening and closing mechanism, two monitoring mechanisms and two quick release mechanisms.

[0006] The monitoring mechanism comprises:

[0007] A plurality of storage rings, cylinder and two moving seats, the outer wall of a plurality of said storage ring is fixedly connected with a communication pipe, the input end of the communication pipe is fixedly connected with a top containing sleeve, the input end of the top containing sleeve is fixedly connected with a flow pipe, the input end of the flow pipe is fixedly connected with a cylinder, when the hinge is deformed or misaligned, the storage ring is broken, and the lubricating oil in the storage ring flows out;

[0008] The outer wall of two said moving seats is provided with two installation grooves two, and a group of spring fives is fixedly installed on one side of the inner wall of four said installation grooves two.

[0009] The quick release mechanism comprises:

[0010] The push seat and the connecting roller, the connecting roller is movably inserted into the push seat, the connecting roller drives the clamping block to shrink through the push seat, and the hinge is quickly taken off.

[0011] Preferably, the opening and closing mechanism comprises a door frame, a fireproof door body is movably inserted into the inner surface wall of the door frame, two installation holes one and installation holes two are formed in the outer surface wall of the fireproof door body, two installation grooves one are formed in one side of the inner wall of the door frame, two monitoring mechanisms are fixedly inserted into the inside of the opening and closing mechanism, a plurality of storage rings are fixedly inserted between the inner surface walls of the storage rings, a hinge two is movably sleeved on the outer surface wall of the hinge one, and the hinge one is fixed in the installation groove one through screws.

[0012] Preferably, the outer wall of the cylinder is fixedly inserted into the installation hole two, a transparent sheet is fixedly installed on one side of the outer wall of the cylinder, an installation ring is fixedly inserted into the inner surface wall of the cylinder, a spring one is fixedly installed on one side of the outer wall of the installation ring, a dark display plate is fixedly installed on one side of the outer wall of the spring one, and a base is fixedly installed at the bottom of the hinge one.

[0013] Preferably, three sliding grooves are formed in the inner wall of the base, a spring two is fixedly installed on one side of the inner wall of each of the three sliding grooves, a sliding block is fixedly installed on one side of the outer wall of each of the three spring two, and the outer surface wall of each of the three sliding blocks is movably embedded in the inside of the sliding groove.

[0014] Preferably, three said sliding blocks are fixedly installed on one side of the outer wall of the hinge two, and the hinge two is movably inserted into the inside of the base.

[0015] Preferably, the outer surface wall of the connecting shaft movably sleeved with a ratchet wheel, the outer surface wall of the three said pawls is movably inserted into the inside of the ratchet wheel, the bottom of the ratchet wheel is fixedly installed with a spring three and a rotating shaft, and the outer surface wall of the rotating shaft is movably inserted into the inside of the shaft hole.

[0016] Preferably, the bottom of the rotating shaft is fixedly provided with a movable plate, the outer wall of the second hinge is provided with two mounting holes three, the inner wall of the two mounting holes three is fixedly provided with a spring four on one side, and the two springs four are arranged on the outer wall of the movable seat.

[0017] Preferably, the inside of the opening and closing mechanism is movably provided with two quick release mechanisms, the quick release mechanism comprises a positioning block, the outer wall of the positioning block is provided with a group of threaded holes, and the inner wall of the threaded hole is screw-connected with a fixing screw.

[0018] Preferably, the outer wall of the fixing screw is screw-connected with the inner wall of the fireproof door body, the outer wall of the two movable seats is movably arranged in the inside of the positioning block, the inner wall of the positioning block is movably provided with a push rod, and the outer wall of the connecting roller is movably arranged in the inside of the positioning block.

[0019] Preferably, the outer wall of the connecting roller is fixedly provided with a group of arc blocks, the outer wall of the connecting roller is movably provided with a positioning sleeve, the outer wall of the positioning sleeve is movably arranged in the inside of the mounting hole one, and the outer wall of the connecting roller is fixedly provided with a hook.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] 1、The hinge of the fireproof hidden door provides double protection for fire safety and personnel escape. On the one hand, when the storage ring breaks, the lubricating oil is released to reduce the friction of the hinge parts, so that the basic opening and closing function is maintained when the hinge is damaged, and the lubricating oil flowing out causes color change, which facilitates people to discover the abnormal hinge in time and maintain the fireproof hidden door in good condition. On the other hand, when the hinge is damaged in fire and cannot be replaced in time, the hinge is disconnected from the fireproof door body by rotating the hook, so that people can directly push down the fireproof door body to escape, effectively avoiding being trapped due to hinge failure, providing more escape opportunities for personnel in emergency situations such as fire, and maximizing the protection of life safety.

[0022] 2、In the present application, when the door body rotates, the connecting shaft drives the ratchet wheel to rotate, and the toothed structure and the pawl interact to effectively prevent the door from suddenly closing in the opposite direction due to accidental touch, air flow and other sudden factors, avoid the risk of body injury caused by the door body hitting the passing personnel, ensure that the rescue equipment and materials can smoothly and quickly pass through the fireproof hidden door, and will not delay the valuable rescue time due to accidental closing of the door body, greatly improving the overall safety and rescue efficiency.

[0023] 3、The fireproof hidden door hinge system significantly reduces maintenance cost and replacement difficulty, the modular quick-release design can be disassembled through hook triggering mechanical linkage, without professional tools, so that replacement time and labor cost are greatly shortened, and the modular structure supports separate replacement of damaged components instead of the whole hinge, further saving spare part cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a front view of the fireproof hidden door with hinge connection structure according to the present application;

[0025] Figure 2 It is a sectional view of the opening and closing mechanism in the fireproof hidden door with hinge connection structure according to the present application;

[0026] Figure 3 It is a split schematic view of the monitoring mechanism in the fireproof hidden door with hinge connection structure according to the present application;

[0027] Figure 4 It is a sectional view of the monitoring mechanism in the fireproof hidden door with hinge connection structure according to the present application;

[0028] Figure 5 It is a bottom-up split view of the monitoring mechanism in the fireproof hidden door with hinge connection structure according to the present application;

[0029] Figure 6 It is an enlarged view of the A structure in the fireproof hidden door with hinge connection structure according to the present application;

[0030] Figure 7 It is a partial sectional view of the monitoring mechanism in the fireproof hidden door with hinge connection structure according to the present application;

[0031] Figure 8 It is an enlarged view of the B structure in the fireproof hidden door with hinge connection structure according to the present application;

[0032] Figure 9 It is a split schematic view of the fireproof hidden door with hinge connection structure according to the present application;

[0033] Figure 10 It is a top view of the quick-release mechanism in the fireproof hidden door with hinge connection structure according to the present application;

[0034] Figure 11 It is a partial view of the quick-release mechanism in the fireproof hidden door with hinge connection structure according to the present application.

[0035] In the figure: 1, opening and closing mechanism; 11, door frame; 12, fireproof door main body; 13, mounting hole one; 14, mounting hole two; 15, mounting groove one; 2, monitoring mechanism; 21, hinge one; 22, hinge two; 23, storage ring; 24, communication pipe; 25, top containing sleeve; 26, flow pipe; 27, cylinder; 28, transparent sheet; 29, mounting ring; 210, spring one; 211, dark display plate; 212, base; 213, sliding groove; 214, spring two; 215, sliding block; 216, pawl; 217, connecting shaft; 218, shaft hole; 219, ratchet; 220, spring three; 221, rotating shaft; 222, movable sleeve; 223, mounting hole three; 224, spring four; 225, moving seat; 226, mounting groove two; 227, spring five; 228, clamping block; 3, quick release mechanism; 31, positioning block; 32, threaded hole; 33, fixing screw; 34, push seat; 35, connecting roller; 36, arc block; 37, positioning sleeve; 38, hook. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] Referring to Figure 1 - Figure 11 As shown in the figure, the present application provides a fireproof fire-fighting concealed door with a hinge connection structure, comprising: an opening and closing mechanism 1, two monitoring mechanisms 2 and two quick release mechanisms 3.

[0038] The opening and closing mechanism 1 is the core main structure of the fireproof hidden door, and can realize free and flexible movement under the cooperation and assistance of the monitoring mechanism 2 and the quick release mechanism 3, so as to provide convenient conditions for people to open the fireproof hidden door in time to escape in case of fire. When the fireproof hidden door is in a normal standby state, the opening and closing mechanism 1 is tightly matched with the door body, is stably connected through the hinge and other connecting components, and ensures that the hidden door can stably be in a closed state, effectively blocks the smoke, flame and high temperature generated by the fire, and fights for valuable time for personnel evacuation. At the same time, the monitoring mechanism 2 is in a continuous monitoring state, can realize real-time sensing of the state change of the hinge connected with the opening and closing mechanism 1, and the quick release mechanism 3 is in a standby state and is ready to play a role in an emergency, so as to realize quick separation of the hinge and the door body in a short time. If the hinge is deformed or dislocated due to external force in the normal use process, the monitoring mechanism 2 will immediately play a key role. Due to the deformation or dislocation of the hinge, the specific device inside the monitoring mechanism 2 will be directly extruded. The monitoring mechanism 2 stores a proper amount of lubricating oil, which will flow out along the pre-designed channel after being extruded. The flowing-out lubricating oil can quickly cover the surface of the deformed or dislocated hinge, plays a lubricating role, effectively avoids the hinge from being stuck due to increased friction, and ensures that the opening and closing mechanism 1 can still maintain a relatively flexible movement state to a certain extent, so as to prevent complete loss of the opening function. At the same time, the flowing-out lubricating oil also starts the corresponding visual prompt mechanism, people can timely find that the hinge is damaged, and replace the damaged hinge. In some extremely urgent special situations, such as rapid development of fire, fierce fire and very dangerous on-site conditions, there is no enough time and condition to replace the damaged hinge, people need to quickly start the quick release mechanism 3, make the connecting structure of the quick release mechanism 3 fail instantaneously through a series of precise mechanical actions, so as to realize quick separation of the hinge and the door body. Once the hinge and the door body are separated, the fireproof hidden door loses the original fixed support, and people can easily push down the fireproof hidden door by exerting a small external force. After the fireproof hidden door is pushed down, the escape passage originally blocked by the hidden door is quickly opened, and people can escape from the fire accident site in time along the unblocked passage, so as to improve the survival probability in the fire.

[0039] In some examples, as shown in Figs. Figure 1 , Figure 2 and Figure 9 , the opening and closing mechanism 1 comprises a door frame 11, a fireproof door body 12 movably inserted into the inner surface wall of the door frame 11, two installation holes one 13 and installation holes two 14 formed in the outer surface wall of the fireproof door body 12, and two installation grooves one 15 formed in the inner wall of the door frame 11.

[0040] The opening and closing mechanism 1 is used as the main mechanism. The fireproof door body 12 is hidden and integrated with the wall in normal times, thereby saving space. When a fire occurs, people hold the handle and quickly rotate the fireproof door body 12 to open it, and escape from the dangerous area in time.

[0041] In some examples, with reference to Figures 1-9 As shown, two monitoring mechanisms 2 are fixedly inserted in the opening and closing mechanism 1. A plurality of accommodation rings 23 are fixedly inserted with a hinge two 22 between the inner walls of the accommodation rings 23. The outer wall of the hinge two 22 movably sheaths a hinge one 21. The hinge one 21 is fixedly arranged in the installation groove one 15 by screws. The outer wall of a cylinder 27 is fixedly inserted in the installation hole two 14. The outer wall of the cylinder 27 is fixedly arranged with a transparent sheet 28. The inner wall of the cylinder 27 is fixedly inserted with an installation ring 29. The outer wall of the installation ring 29 is fixedly arranged with a spring one 210. The outer wall of the spring one 210 is fixedly arranged with a dark display plate 211. The bottom of the hinge one 21 is fixedly arranged with a base 212. Three sliding grooves 213 are arranged in the inner wall of the base 212. Three spring two 214 are fixedly arranged in the inner wall of the three sliding grooves 213. Three sliding blocks 215 are fixedly arranged in the outer wall of the three spring two 214. The outer walls of the three sliding blocks 215 are movably arranged in the sliding grooves 213. The bottoms of the three sliding blocks 215 are fixedly arranged with pawls 216. The outer wall of the hinge two 22 is movably inserted in the base 212. The bottom of the hinge two 22 is fixedly arranged with a connecting shaft 217. The bottom of the base 212 is arranged with a shaft hole 218. The outer wall of the connecting shaft 217 movably sheaths a ratchet wheel 219. The outer walls of the three pawls 216 are movably inserted in the ratchet wheel 219. The bottom of the ratchet wheel 219 is fixedly arranged with a spring three 220 and a rotating shaft 221. The outer wall of the rotating shaft 221 is movably inserted in the shaft hole 218. The bottom of the rotating shaft 221 is fixedly arranged with a movable plate 222.

[0042] The monitoring mechanism 2 comprises:

[0043] The plurality of accommodation rings 23, the cylinder 27 and the two moving seats 225 are fixedly communicated with a communication pipe 24 between the outer walls of the plurality of accommodation rings 23. The input end of the communication pipe 24 is fixedly communicated with a top containing sleeve 25. The input end of the top containing sleeve 25 is fixedly communicated with a flow-through pipe 26. The input end of the flow-through pipe 26 is fixedly communicated with the cylinder 27. When the hinge is deformed or misaligned, the accommodation ring 23 will be crushed, so that the internal lubricating oil flows out, thereby facilitating people to timely find the hinge failure.

[0044] In the process of the door body of the fire-fighting concealed door being normally opened or closed, the hinge two 22 installed on the door body will begin to rotate on the surface of the hinge one 21, at this time, the connecting shaft 217 on the outer wall of the hinge two 22 will rotate synchronously with the hinge two 22, and the ratchet wheel 219 connected with the connecting shaft 217 will begin to rotate, in the process of rotating, the unique tooth structure of the ratchet wheel 219 will constantly interact with the pawl 216 to push the pawl 216 outward, after the pawl 216 is pushed out, the sliding block 215 on the top of the pawl 216 will slide in the pre-set sliding groove 213, the cooperation between the sliding groove 213 and the sliding block 215 strictly limits the movement direction of the pawl 216, ensures that the pawl 216 always moves along the predetermined track and cannot deviate, thereby ensuring the stability and accuracy of the operation of the ratchet wheel 219 and the pawl 216 mechanism, in the process of the pawl 216 moving, the pawl 216 will also press the spring two 214 connected with the pawl 216, after being pressed, the spring two 214 will be deformed to store a certain elastic potential energy, when the teeth of the ratchet wheel 219 are separated from the pawl 216, the spring two 214 pressed will stretch to release the stored elastic potential energy, constantly pushing the pawl 216 to reset, preparing for the next interaction with the ratchet wheel 219, the design of the ratchet wheel 219 and the pawl 216 mechanism effectively prevents the door from being suddenly closed in the reverse direction due to accidental touching, air flow and other factors, avoids the door from being closed in the reverse direction to hit the personnel passing by, causing serious physical injury, ensures the smooth and rapid passing of rescue equipment and materials, does not delay the rescue opportunity, greatly improves the rescue efficiency and the safety of personnel evacuation, when the fire-fighting concealed door needs to be closed, the operator only needs to pull the movable plate 222, the movement of the movable plate 222 will drive the rotating shaft 221 connected with the movable plate 222 to descend, the descent of the rotating shaft 221 will cause the ratchet wheel 219 on the top to be pressed, and then press the spring three 220, under the continuous movement, the ratchet wheel 219 will be separated from the connecting shaft 217 and the pawl 216, at this time, the door body loses the limitation of the ratchet wheel 219 and the pawl 216 mechanism, and can drive the hinge two 22 to reverse and close, realizing the normal closing operation of the fire-fighting concealed door.The lubricating oil stored in the cylinder 27 in communication with the storage ring 23 will also flow out. Under normal circumstances, the dark display plate 211 is the same color as the fire door body 12. When the liquid pressure makes the dark display plate 211 tightly adhere to the transparent sheet 28, the color of the place is integrated with the overall color of the fire door body 12, which will not attract people's attention. However, when the internal lubricating oil flows out, the liquid pressure changes, and the spring I 210 begins to contract. The contraction of the spring I 210 will drive the dark display plate 211 to separate from the transparent sheet 28. At this time, the place will be in a colorless and transparent state, which will form a sharp contrast with the surrounding dark fire door body 12. People can discover the abnormal situation of the hinge by observing the obvious color change. After discovering the abnormality, relevant personnel need to replace or maintain the hinge in time to ensure that the fire door is always in good working condition and provide reliable protection for fire safety.

[0045] In some examples, referring to Figures 1-2 、 Figures 7-11 It is shown that the outer wall of the two moving seats 225 is provided with two installation grooves two 226. One side of the inner wall of the four installation grooves two 226 is fixedly installed with a set of spring five 227. The outer wall of the four sets of spring five 227 is fixedly installed with a clamping block 228.

[0046] The quick release mechanism 3 comprises:

[0047] The push seat 34 and the connecting roller 35 are movably inserted into the push seat 34. The connecting roller 35 can drive the clamping block 228 to contract, so as to take off the hinge from the door, avoiding the failure of the hinge leading to the door unable to be normally opened.

[0048] The outer wall of the hinge two 22 is provided with two installation holes three 223. One side of the inner wall of the two installation holes three 223 is fixedly installed with a spring four 224. The two spring fours 224 are installed on one side of the outer wall of the moving seat 225. The two moving seats 225 are movably inserted into the inside of the installation hole three 223. The inside of the opening and closing mechanism 1 movably inserts two quick release mechanisms 3. The quick release mechanism 3 comprises a positioning block 31. The outer wall of the positioning block 31 is provided with a set of threaded holes 32. The inner surface of the set of threaded holes 32 is screwed with a fixed screw 33. The outer wall of the set of fixed screws 33 is screwed with the inner wall of the fire door body 12. The outer wall of the two moving seats 225 is movably inserted into the inside of the positioning block 31. The inner wall of the positioning block 31 movably inserts a push seat 34. The outer wall of the connecting roller 35 is movably inserted into the inside of the positioning block 31. The outer wall of the connecting roller 35 is fixedly installed with a set of arc blocks 36. The outer wall of the connecting roller 35 movably sleeves a positioning sleeve 37. The outer wall of the positioning sleeve 37 is movably inserted into the inside of the installation hole one 13. One side of the outer wall of the connecting roller 35 is fixedly installed with a hook 38.

[0049] In the installation of the fireproof door, people first install the positioning block 31 on the fireproof door body 12 by means of the fixing screw 33, then stick the positioning block 31 and the hinge two 22 together, after sticking, insert professional tools into the installation hole three 223, slowly and steadily push the moving seat 225 forward, in the process of pushing, the moving seat 225 will stretch the spring connected with it, when the moving seat 225 advances and inserts into the positioning block 31, with the moving seat 225 extending out of the installation hole three 223 to the inside of the positioning block 31, the spring five 227 originally squeezed in the installation slot two 226 by the block 228, begins to stretch, firmly fixing the moving seat 225 in the positioning block 31, completing the installation of the hinge, the user can conveniently use the hook 38 to hang clothes, when the emergency situation such as fire breaks out, the hinge is damaged and cannot be replaced in time, at this time, the user can quickly rotate the hook 38, the rotation of the hook 38 will drive the connecting roller 35 to rotate synchronously, when the connecting roller 35 drives the arc-shaped block 36 on the outer wall to rotate to coincide with the groove at the positioning sleeve 37, the user pulls the hook 38, under the action of the pulling force, the arc-shaped block 36 will smoothly insert into the groove, the connecting roller 35 drives the push seat 34 behind to advance, the push seat 34 advances in the positioning block 31, when it contacts the block 228, it will exert an inward extrusion force on the block 228, the block 228 will retract into the installation slot two 226 under the action of the extrusion force, with the retraction of the block 228, the originally stretched spring four 224 begins to contract, the contraction of the spring four 224 will generate a pulling force, pulling the moving seat 225 out of the positioning block 31, so that the connection between the hinge two 22 and the fireproof door body 12 is released, the user does not need to rotate to open the fireproof door body 12 as usual, but can directly push down the fireproof door body 12, quickly escaping from the fire scene, the purpose of this method is to avoid the situation that the hinge fails, leading to difficulty in escaping, providing more opportunities for people to escape in emergency situations such as fire, effectively protecting the safety of people's lives.

[0050] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments, or make equivalent replacements for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fireproof fire-fighting hidden door with a hinged connection structure, characterized in that: include: An opening and closing mechanism (1), two monitoring mechanisms (2) and two quick-release mechanisms (3); The monitoring mechanism (2) comprises: A plurality of receiving rings (23), a cylinder (27) and two movable seats (225); a connecting pipe (24) is fixedly connected between the outer walls of the plurality of receiving rings (23); an input end of the connecting pipe (24) is fixedly connected to a top receiving sleeve (25); an input end of the top receiving sleeve (25) is fixedly connected to a flow pipe (26); an input end of the flow pipe (26) is fixedly connected to a cylinder (27); when the hinge is deformed or misaligned, the receiving ring (23) is squeezed and the lubricating oil in the receiving ring flows out; The outer walls of the two movable seats (225) are each provided with two second mounting grooves (226), one side of the inner wall of each of the four second mounting grooves (226) is fixedly mounted with a set of fifth springs (227), and a clamping block (228) is fixedly mounted between the outer walls of the four sets of fifth springs (227); The quick-release mechanism (3) comprises: A push seat (34) and a connecting roller (35) are provided. The connecting roller (35) is movably inserted into the interior of the push seat (34). The connecting roller (35) drives the clamping block (228) to contract through the push seat (34) for quick removal of the hinge.

2. The fireproof hidden door with a hinged connection structure according to claim 1, characterized in that: The opening and closing mechanism (1) comprises a door frame (11), the inner surface wall of the door frame (11) is movably inserted with a fire door body (12), the outer surface wall of the fire door body (12) is provided with two mounting holes (13) and two mounting holes (14), one side of the inner wall of the door frame (11) is provided with two mounting grooves (15), two monitoring mechanisms (2) are fixedly inserted inside the opening and closing mechanism (1), a hinge (22) is fixedly inserted between the inner surface walls of the plurality of storage rings (23), a hinge (21) is movably sleeved on the outer surface wall of the hinge (22), and the hinge (21) is fixed inside the mounting groove (15) by screws.

3. The fireproof hidden door with a hinged connection structure according to claim 2, characterized in that: The outer wall of the cylinder (27) is fixedly inserted into the interior of the second mounting hole (14); a transparent sheet (28) is fixedly installed on one side of the outer wall of the cylinder (27); a mounting ring (29) is fixedly inserted on the inner wall of the cylinder (27); a spring (210) is fixedly installed on one side of the outer wall of the mounting ring (29); a dark display panel (211) is fixedly installed on one side of the outer wall of the spring (210); and a base (212) is fixedly installed on the bottom of the hinge (21).

4. The fireproof hidden door with a hinged connection structure according to claim 3, characterized in that: Three slide grooves (213) are provided on the top of the inner wall of the base (212), and spring 2 (214) is fixedly installed on one side of the inner wall of the three slide grooves (213), and sliders (215) are fixedly installed on one side of the outer wall of the three springs (214), and the outer walls of the three sliders (215) are movably embedded in the interior of the slide grooves (213).

5. The fireproof hidden door with a hinged connection structure according to claim 4, characterized in that: The bottoms of the three sliders (215) are all fixedly mounted with ratchets (216); the outer wall of the hinge 2 (22) is movably inserted into the interior of the base (212); the bottom of the hinge 2 (22) is fixedly mounted with a connecting shaft (217); and the bottom of the base (212) is provided with an axis hole (218).

6. The fireproof hidden door with a hinged connection structure according to claim 5, characterized in that: The outer wall of the connecting shaft (217) is movably sleeved with a ratchet (219), and the outer walls of the three pawls (216) are movably inserted into the interior of the ratchet (219). A spring (220) and a rotating shaft (221) are fixedly installed at the bottom of the ratchet (219), and the outer wall of the rotating shaft (221) is movably inserted into the interior of the shaft hole (218).

7. The fireproof hidden door with a hinged connection structure according to claim 6, characterized in that: A movable plate (222) is fixedly installed at the bottom of the rotating shaft (221), and two mounting holes (223) are provided on the outer wall of the hinge (22). Springs (224) are fixedly installed on one side of the inner wall of the two mounting holes (223). The two springs (224) are both installed on one side of the outer wall of the movable seat (225), and the two movable seats (225) are both movably inserted into the interior of the mounting hole (223).

8. The fireproof hidden door with a hinged connection structure according to claim 7, characterized in that: Two quick-release mechanisms (3) are movably inserted inside the opening and closing mechanism (1), and the quick-release mechanism (3) includes a positioning block (31). The outer wall of the positioning block (31) is provided with a group of threaded holes (32), and the inner walls of the group of threaded holes (32) are all threadedly connected with fixing screws (33).

9. The fireproof hidden door with a hinged connection structure according to claim 8, characterized in that: The outer walls of a group of the fixing screws (33) are threadedly connected to the inner wall of the fire door body (12), the outer walls of the two movable seats (225) are movably inserted into the interior of the positioning block (31), the inner wall of the positioning block (31) is movably inserted with a push seat (34), and the outer wall of the connecting roller (35) is movably inserted into the interior of the positioning block (31).

10. The fireproof hidden door with a hinged connection structure according to claim 9, characterized in that: A group of arc blocks (36) are fixedly mounted on the outer wall of the connecting roller (35); a positioning sleeve (37) is movably mounted on the outer wall of the connecting roller (35); the outer wall of the positioning sleeve (37) is movably inserted into the interior of the first mounting hole (13); and a hook (38) is fixedly mounted on one side of the outer wall of the connecting roller (35).

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