Fireproof elevator door for elevator car

Abstract

The invention relates to the technical field of elevator doors, in particular to a fireproof elevator door for an elevator car, which comprises a car, a car elevator door, a door frame groove, a frame plate, a unit grid, an expansion flame-retardant module, a joint filling flame-retardant capsule module, a sealing plug block, a shielding net plate, a fixing sleeve, a puncture cone, a perforation groove and a convex block. When the car elevator door is in a closed state, the expansion flame-retardant modules in the unit lattices are heated to expand, so that the gap filling flame-retardant capsule modules and the sealing plug blocks are pushed to move out of the unit lattices, and protruding blocks on the sealing plug blocks penetrate out of the screen plates and extend into fixing sleeves on the opposite screen plates; the stab breaking cones break the gap filling flame-retardant capsule modules mutually, liquid flame retardants in the gap filling flame-retardant capsule modules flow out, then the intumescent flame retardants are mixed with the liquid flame retardants to fill gaps of the car elevator door, and the fireproof effect of a car is effectively improved.

Description

Technical Field

[0001] The present invention relates to a fireproof elevator door, in particular to a fireproof elevator door for an elevator car applied in the technical field of elevator doors. Background Art

[0002] A car is a box-shaped space for an elevator to carry and transport people and materials. The car generally consists of main components such as a car bottom, car walls, a car top, and car doors. It is a car body component of an elevator used to carry passengers, goods, and other loads. The elevator door is one of the main components of an elevator, which can prevent people from falling into the elevator shaft and play a protective role.

[0003] The specification of Chinese Patent CN119683445A discloses "An elevator car door panel gap protection device". The first box door drives the second box door through the first opening panel to open the second box door. During the opening process of the first box door, if a finger is accidentally caught between the first box door and the car body main part, under the action of the first buffer part, there is a cooperation of a first spring and a guiding part between the anti-pinch main board and the first box door. The distance between the anti-pinch main board and the first box door becomes larger and buffers, and at this time, the caught finger can be taken out. The specification of Chinese Patent CN215828123U discloses "A fireproof safety elevator door". A first heat insulation layer is fixedly embedded on the door body, a fireproof layer and a flame retardant layer are fixedly embedded on one side of the door body, and a noise reduction layer and a second heat insulation layer are fixedly embedded on the other side of the door body. The heat insulation layer can conduct heat insulation to reduce heat transfer, the fireproof layer and the flame retardant layer can delay the spread of fire, and the noise reduction layer can ensure the sound insulation effect at the door panel position of the elevator car to avoid being interfered by external noise during normal use.

[0004] Most existing car elevator doors adopt the method of filling fireproof materials inside to improve fireproof ability. The fireproof materials filled inside cannot act on the gaps between elevator doors. Moreover, when designing elevator doors, in order to prevent fingers from being pinched, corresponding buffer structures are generally set. Therefore, the gap between elevator doors will increase, making it easier for flames and thick smoke during a fire to enter the car through the gap. Summary of the Invention

[0005] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is that the gaps between existing elevator doors lack fireproof ability, and flames and thick smoke during a fire are likely to enter the car through the gaps.

[0006] To solve the above problems, the present invention provides a fireproof elevator door for an elevator car, which includes a car. Rail grooves are fixedly connected to the top and bottom of the open end of the car. A car elevator door is slidably connected between the two ends of the two groups of rail grooves. Frame grooves are opened at one end of the two car elevator doors facing each other. A frame board is movably embedded inside the frame groove. Unit cells are fixedly connected to the surface of the frame board at equal intervals. An expansion flame retardant module, a caulking flame retardant capsule module, and a closing plug are fixedly plugged inside the unit cell in sequence from the inside to the outside. A wedge-shaped groove is opened at the bottom of the unit cell, and the bottom of the closing plug corresponds to the top end of the wedge-shaped groove.

[0007] A netting board is fixedly connected to the outer surface of the frame board. A fixing sleeve is fixedly connected to the inner surface of the netting board corresponding to the open end of the unit cell. A puncturing cone is inserted inside the fixing sleeve, and the length of the fixing sleeve is greater than that of the puncturing cone. A perforation groove is opened at one end of the closing plug, and the perforation groove corresponds to the fixing sleeve. A protruding block is fixedly connected to the other end of the closing plug, and the protruding block corresponds to the handle end of the puncturing cone.

[0008] In the above-mentioned fireproof elevator door for an elevator car, the expansion flame retardant module expands when heated to push the caulking flame retardant capsule module and the closing plug, and the puncturing cone is used to break open the caulking flame retardant capsule module, so as to realize the filling of the gap of the car elevator door with the expansion flame retardant mixed liquid flame retardant, thereby effectively improving the fireproof effect of the elevator car.

[0009] As a further improvement of the present application, the expansion flame retardant module is made of expandable graphite material, and the caulking flame retardant capsule module is a liquid flame retardant and is made of a gel capsule. The expandable graphite material absorbs a large amount of heat during the expansion process, and the graphite worm body formed by the expansion and the liquid flame retardant leaking out of the caulking flame retardant capsule module can more effectively fill the gap of the car elevator door.

[0010] As a further improvement of the present application, a plug spring is fixedly connected between the closing plug and the netting board, and a cone spring is fixedly connected between the handle end of the puncturing cone and the inner wall of the fixing sleeve. The closing plug is inserted into the unit cell through the plug spring, and the puncturing cone is retracted into the fixing sleeve through the cone spring.

[0011] As a further improvement of the present application, protruding nails are uniformly fixedly connected to the outer surface of the netting board, and blocking bands are fixedly connected to the left and right edges of the netting board. The blocking bands are made of high-temperature resistant rubber material. The liquid flame retardant is effectively intercepted by the protruding nails, which is convenient for the liquid flame retardant to stay in the gap, and the liquid flame retardant is effectively prevented from leaking out from the side of the gap through the blocking of the blocking bands.

[0012] As another improvement of the present application, discharge ports are provided at both the top and bottom of the unit cell, and a blocking piece is fixedly connected to the outside of the discharge port. The blocking piece is made of spring steel material. By providing the discharge ports, the expansion flame retardant module inside the unit cell can enter the door frame groove after being heated and expanded, effectively increasing the expandable space of the expansion flame retardant module.

[0013] As a supplement to another improvement of the present application, splicing cabinets are fixedly connected to both the top and bottom ends of the door frame groove. A rotating latch is hinged inside the splicing cabinet. Locking pages are fixedly connected to both the top and bottom ends of the border plate. A locking hole is provided in the middle of the locking page. The rotating latch is inserted and corresponding to the locking hole. By inserting the rotating latch into the locking hole, it is convenient to inlay and fix the door frame groove and the border plate, effectively improving the installation efficiency of the border plate.

[0014] As a supplement to another improvement of the present application, the splicing cabinet communicates with the side of the door frame groove. A torsion rod is fixedly connected to the outside of the rotating latch, and a torsion spring is fixedly sleeved on the hinged end of the rotating latch. The torsion spring is used to realize the automatic rotation of the rotating latch, which is convenient for the rotating latch to automatically insert into the locking hole. The staff manually operates the torsion rod to facilitate the rotating latch to disengage from the locking hole.

[0015] As another improvement of the present application, a hanging cable is fixedly connected between the inner wall of the splicing cabinet and the locking page. The hanging cable is made of steel wire. When the border plate is separated from the door frame groove, the border plate is suspended on the door frame groove through the hanging cable, playing a warning role and effectively preventing people from reboarding the elevator.

[0016] In summary, in the event of a fire and when the car elevator door is in a closed state, the expansion flame retardant module inside the unit cell is heated and expanded, thereby pushing the caulking flame retardant capsule module and the sealing plug block outward of the unit cell. The protruding block on the sealing plug block penetrates through the shielding net plate and extends into the fixing sleeve on the opposite shielding net plate, realizing that the puncturing cones break through the caulking flame retardant capsule module with each other. The liquid flame retardant inside the caulking flame retardant capsule module flows out, and then the expansion flame retardant is mixed with the liquid flame retardant to fill the gap of the car elevator door, effectively improving the fire prevention effect of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall three-dimensional structure diagram of the first embodiment of the present application;

[0018] Figure 2 It is the three-dimensional structure diagram of the door frame groove, the border plate and the shielding net plate of the first embodiment of the present application;

[0019] Figure 3 It is the three-dimensional structure diagram of the unit cell of the first embodiment of the present application;

[0020] Figure 4Stereoscopic structure diagram of the intumescent flame retardant module, caulking flame retardant capsule module and closing plug block of the first embodiment of the present application;

[0021] Figure 5 Stereoscopic structure diagram of the unit cell, closing plug block and shielding net plate of the first embodiment of the present application;

[0022] Figure 6 Stereoscopic sectional view of the fixing sleeve and the puncturing cone of the first embodiment of the present application;

[0023] Figure 7 Demonstration diagram of the puncturing cone piercing the caulking flame retardant capsule module of the first embodiment of the present application;

[0024] Figure 8 Stereoscopic sectional view of the discharge port and the blocking piece of the second embodiment of the present application;

[0025] Figure 9 Stereoscopic sectional view of the spliced cabinet body of the second embodiment of the present application;

[0026] Figure 10 Demonstration diagram of the frame board detaching from the door frame groove of the second embodiment of the present application.

[0027] Explanation of the reference numerals in the figure:

[0028] 1, car; 101, rail groove; 102, car elevator door; 103, door frame groove; 2, frame board; 201, unit cell; 202, intumescent flame retardant module; 203, caulking flame retardant capsule module; 204, closing plug block; 205, wedge groove; 206, shielding net plate; 207, fixing sleeve; 208, puncturing cone; 209, perforation groove; 210, protruding block; 211, plug block spring; 212, cone spring; 213, protruding nail; 214, blocking belt; 3, discharge port; 301, blocking piece; 4, spliced cabinet body; 401, rotating latch; 402, locking page; 403, locking hole; 404, torsion bar; 405, torsion spring; 406, connecting cable. Specific embodiments

[0029] The following will describe in detail the two embodiments of the present application with reference to the accompanying drawings.

[0030] The first embodiment:

[0031] Figures 1 to 5Shown is a fireproof elevator door for an elevator car, including a car 1. Rail grooves 101 are fixedly connected to both the top and bottom of the open end of the car 1. A car elevator door 102 is slidably connected between the two ends of the two groups of rail grooves 101. Door frame grooves 103 are provided at one end of the two car elevator doors 102 facing each other. A frame board 2 is movably inlaid inside the door frame grooves 103. Unit cells 201 are fixedly connected to the surface of the frame board 2 at equal intervals. An expansion flame retardant module 202, a caulking flame retardant capsule module 203, and a closing plug 204 are fixedly plugged inside the unit cell 201 in sequence from inside to outside. The expansion flame retardant module 202 is made of expandable graphite material. The caulking flame retardant capsule module 203 is a liquid flame retardant and is made of a gel capsule. To improve the viscosity of the liquid flame retardant, those skilled in the art usually add a thickening agent. The expandable graphite material absorbs a large amount of heat during the expansion process. When the expandable graphite material is heated and expanded, a drastic physical form change occurs, generating filamentous substances in the shape of worms, simply referred to as graphite worm bodies. The graphite worm bodies mixed with the liquid flame retardant leaked from the caulking flame retardant capsule module 203 can more effectively fill the gap between the car elevator doors 102. A netting board 206 is fixedly connected to the outer surface of the frame board 2. A plug spring 211 is fixedly connected between the closing plug 204 and the netting board 206. A wedge-shaped groove 205 is provided at the bottom of the unit cell 201, and the bottom of the closing plug 204 corresponds to the top of the wedge-shaped groove 205;

[0032] In case of a fire and when the car elevator door 102 is in the closed state, the expansion flame retardant module 202 inside the unit cell 201 expands when heated. The expansion flame retardant module 202 is made of expandable graphite material and absorbs a large amount of heat during the heating and expansion process, thus effectively protecting the structure of the car elevator door 102. The expanded expansion flame retardant module 202 pushes the caulking flame retardant capsule module 203 and the closing plug 204 to move outside the unit cell 201. When the caulking flame retardant capsule module 203 and the closing plug 204 are pushed to the position of the netting board 206, the netting board 206 prevents the closing plug 204 from continuing to move. Thus, after the caulking flame retardant capsule module 203 ruptures, the liquid flame retardant inside it is extruded by the expansion flame retardant module 202 and the closing plug 204 and discharged, allowing the liquid flame retardant to mix with the graphite worm bodies generated by the expansion of the expansion flame retardant module 202 to enter the gap between the two car elevator doors 102. The mixed flame retardant effectively adheres to the gap, effectively preventing flames and smoke from passing through the gap and entering the inside of the car 1, thereby effectively improving the fire prevention effect of the car 1.

[0033] Figures 5 to 7It is shown that a fixing sleeve 207 is fixedly connected to the inner surface of the shielding net plate 206 corresponding to the open end of the unit cell 201. A puncturing cone 208 is inserted into the fixing sleeve 207, and the length of the fixing sleeve 207 is greater than that of the puncturing cone 208. A cone spring 212 is fixedly connected between the handle end of the puncturing cone 208 and the inner wall of the fixing sleeve 207. A perforation groove 209 is formed at one end of the closing plug 204, and the perforation groove 209 corresponds to the fixing sleeve 207. A protruding block 210 is fixedly connected to the other end of the closing plug 204, and the protruding block 210 corresponds to the handle end of the puncturing cone 208;

[0034] When the car elevator door 102 is in the closed state, at this time the two shielding net plates 206 are in a closely adjacent state. The expanded flame retardant module 202 after heat expansion pushes the caulking flame retardant capsule module 203 and the closing plug 204 towards the shielding net plate 206. The protruding block 210 on the closing plug 204 penetrates through the shielding net plate 206 and extends into the fixing sleeve 207 on the opposite shielding net plate 206. The puncturing cones 208 break through the caulking flame retardant capsule module 203 with each other, realizing the outflow of the liquid flame retardant inside the caulking flame retardant capsule module 203. When the car elevator door 102 is in the open state, the protruding block 210 on the closing plug 204 cannot extend into the fixing sleeve 207. Therefore, the caulking flame retardant capsule module 203 is not broken by the puncturing cone 208, effectively preventing the leakage of the liquid flame retardant in the caulking flame retardant capsule module 203.

[0035] Figure 5 and Figure 6 It is shown that protruding nails 213 are uniformly fixedly connected to the outer surface of the shielding net plate 206, and blocking belts 214 are fixedly connected to the left and right edges of the shielding net plate 206. The blocking belts 214 are made of high-temperature resistant rubber materials. The protruding nails 213 effectively intercept the liquid flame retardant, facilitating the liquid flame retardant to remain in the gap. And through the blocking of the blocking belts 214, it effectively prevents the liquid flame retardant from leaking out from the side of the gap;

[0036] When the liquid flame retardant mixed with graphite worm bodies enters the gap between the car elevator doors 102, the liquid flame retardant mixture comes into contact with the outer surface of the shielding net plate 206 to achieve adhesion. The protruding nails 213 effectively intercept the liquid flame retardant mixture, facilitating the liquid flame retardant to remain in the gap. Also, through the blocking of the blocking belts 214, it effectively prevents the liquid flame retardant from leaking out from the side of the gap, thereby effectively improving the fire and flame retardant effect.

[0037] The second implementation mode:

[0038] Compared with the first implementation mode, a discharge port 3 and an installation method in which the door frame groove 103 and the frame plate 2 are inserted through the rotary latch 401 and the locking hole 403 are mainly added. The specific added structure is as follows, and the rest of the structure is the same as that of the first implementation mode.

[0039] Figure 8 It is shown that discharge outlets 3 are provided at both the top and bottom of the unit cell 201, and a blocking piece 301 is fixedly connected to the outside of the discharge outlet 3. The blocking piece 301 is made of spring steel material. By providing the discharge outlet 3, the expansion flame retardant module 202 in the unit cell 201 can enter the door frame groove 103 after being heated and expanded, effectively increasing the expandable space of the expansion flame retardant module 202;

[0040] After the expansion flame retardant module 202 is heated and expanded to push the caulking flame retardant capsule module 203 and the sealing plug 204 to move, the expansion flame retardant module 202 continues to undergo a heat expansion reaction. The graphite worm bodies generated push the blocking piece 301 on the discharge outlet 3 to deform, enabling the graphite worm bodies generated by the expansion of the expansion flame retardant module 202 to pass through the discharge outlet 3 and enter the door frame groove 103, effectively increasing the expandable space of the expansion flame retardant module 202 and achieving the heat absorption and cooling effect within the range of the door frame groove 103, effectively protecting the structure of the door frame groove 103.

[0041] Figure 1 、 Figure 9 and Figure 10 It is shown that splicing cabinets 4 are fixedly connected to both the top and bottom ends of the door frame groove 103. A rotating latch 401 is hinged inside the splicing cabinet 4. Locking pages 402 are fixedly connected to both the top and bottom ends of the frame plate 2. A locking hole 403 is provided in the middle of the locking page 402. The rotating latch 401 corresponds to the locking hole 403 for insertion. By inserting the rotating latch 401 into the locking hole 403, it is convenient to inlay and fix the door frame groove 103 and the frame plate 2, effectively improving the installation efficiency of the frame plate 2. The splicing cabinet 4 communicates with the side of the door frame groove 103. A torsion rod 404 is fixedly connected to the outside of the rotating latch 401, and a torsion spring 405 is fixedly sleeved on the hinged end of the rotating latch 401. The torsion spring 405 is used to realize the automatic rotation of the rotating latch 401, facilitating the automatic insertion of the rotating latch 401 into the locking hole 403. When the staff manually operates the torsion rod 404, it is convenient for the rotating latch 401 to disengage from the locking hole 403. A hanging cable 406 is fixedly connected between the inner wall of the splicing cabinet 4 and the locking page 402. The hanging cable 406 is made of steel wire. When the frame plate 2 is detached from the door frame groove 103, the frame plate 2 is suspended on the door frame groove 103 through the hanging cable 406, playing a warning role and effectively preventing people from reboarding the elevator;

[0042] When installing the frame plate 2, align the frame plate 2 and place it into the door frame groove 103. The locking pages 402 at the top and bottom ends of the frame plate 2 are inserted into the splicing cabinet 4. The torsion spring 405 drives the rotating latch 401 to be inserted into the locking hole 403, realizing the automatic installation and fixation of the frame plate 2. When it is necessary to disassemble the frame plate 2, the staff manually rotates the torsion rod 404 to release the insertion of the rotating latch 401 into the locking hole 403, and then the frame plate 2 can be removed;

[0043] When a fire occurs and the car elevator door 102 is in an open state or is being opened, the graphite worm bodies generated by the expansion of the expansion and flame retardant module 202 have passed through the discharge port 3 and entered the door frame groove 103. The graphite worm bodies filled in the door frame groove 103 reach a full load state. At this time, the filled graphite worm bodies apply a thrust to the frame plate 2 towards the outside of the door frame groove 103. When this thrust is greater than the torsion force of the torsion spring 405 acting on the rotating latch 401, the rotating latch 401 makes a plug-in contact with the locking hole 403, thereby realizing the automatic detachment of the frame plate 2 from the door frame groove 103. And because there is a connecting cable 406 between the splicing cabinet body 4 and the frame plate 2, the frame plate 2 is suspended outside the door frame groove 103. The best selected length of the connecting cable 406 is that the connecting cable 406 at the bottom of the frame plate 2 is shorter and is not enough to completely detach the frame plate 2 from the door frame groove 103, while the connecting cable 406 at the top of the frame plate 2 is longer, realizing that the frame plate 2 is far away from the door frame groove 103, and the frame plate 2 is suspended in an inclined and crossed state, thus playing a warning role for the escaping personnel and effectively preventing people from re-riding the elevator.

[0044] Combined with the current actual requirements, the above-mentioned implementation method adopted in this application, the protection scope is not limited to this. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A fireproof elevator door for an elevator car, characterized in that: It includes a car (1). At the top and bottom of the open end of the car (1), guide grooves (101) are fixedly connected. Between the two ends of the two groups of guide grooves (101), car elevator doors (102) are slidably connected. At one end of the two car elevator doors (102) facing each other, door frame grooves (103) are opened. Inside the door frame grooves (103), a frame board (2) is movably inlaid. On the surface of the frame board (2), unit cells (201) are fixedly connected at equal intervals. Inside the unit cells (201), an expandable flame retardant module (202), a caulking flame retardant capsule module (203), and a closing plug (204) are fixedly plugged in sequence from the inside to the outside. At the bottom of the unit cell (201), a wedge-shaped groove (205) is opened, and the bottom of the closing plug (204) corresponds to the top end of the wedge-shaped groove (205). On the outer surface of the frame board (2), a net cover board (206) is fixedly connected. On the inner surface of the net cover board (206), corresponding to the open end of the unit cell (201), a fixing sleeve (207) is fixedly connected. Inside the fixing sleeve (207), a puncturing cone (208) is inserted, and the length of the fixing sleeve (207) is greater than the length of the puncturing cone (208). At one end of the closing plug (204), a perforated groove (209) is opened, and the perforated groove (209) corresponds to the fixing sleeve (207). At the other end of the closing plug (204), a protruding block (210) is fixedly connected, and the protruding block (210) corresponds to the handle end of the puncturing cone (208).

2. The fireproof elevator door for an elevator car according to claim 1, characterized in that: The expandable flame retardant module (202) is made of expandable graphite material, and the caulking flame retardant capsule module (203) is a liquid flame retardant and is made by being wrapped with a gel capsule.

3. The fireproof elevator door for an elevator car according to claim 1, characterized in that: Between the closing plug (204) and the net cover board (206), a plug spring (211) is fixedly connected. Between the handle end of the puncturing cone (208) and the inner wall of the fixing sleeve (207), a cone spring (212) is fixedly connected.

4. The fireproof elevator door for an elevator car according to claim 1, wherein: On the outer surface of the net cover board (206), protruding nails (213) are uniformly fixedly connected, and on the left and right edges of the net cover board (206), blocking belts (214) are fixedly connected. The blocking belts (214) are made of high-temperature resistant rubber material.

5. The fireproof elevator door for an elevator car according to claim 1, wherein: At the top and bottom of the unit cell (201), discharge openings (3) are opened. Outside the discharge openings (3), blocking pieces (301) are fixedly connected. The blocking pieces (301) are made of spring steel material.

6. The fireproof elevator door for an elevator car according to claim 1, wherein: At the top and bottom of the door frame groove (103), splicing cabinets (4) are fixedly connected. Inside the splicing cabinets (4), rotating locking pins (401) are hinged. At the top and bottom of the frame board (2), locking pages (402) are fixedly connected. In the middle of the locking pages (402), locking holes (403) are opened, and the rotating locking pins (401) are inserted and corresponding to the locking holes (403).

7. The fireproof elevator door for an elevator car according to claim 6, wherein: The splicing cabinet (4) communicates with the side surface of the door frame groove (103). Outside the rotating locking pin (401), a torsion rod (404) is fixedly connected, and at the hinged end of the rotating locking pin (401), a torsion spring (405) is fixedly sleeved.

8. The fireproof elevator door for an elevator car according to claim 6, characterized in that: A hanging cable (406) is fixedly connected between the inner wall of the spliced cabinet body (4) and the locking page (402), and the hanging cable (406) is made of steel wire.

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