Fireproof door panel for elevator

Abstract

The utility model relates to elevator parts related technical field especially, it is a kind of elevator fireproof car door plate, including transmission group, the surface of transmission group is provided with elevator car, the surface of elevator car is installed with outer metal sheet, the inner side of outer metal sheet is connected with inner metal sheet, the periphery of outer metal sheet and inner metal sheet is installed with fireproof sealing rubber strip, connection assembly is provided between outer metal sheet and inner metal sheet, fireproof heat insulating layer is provided between outer metal sheet and inner metal sheet, the side of inner metal sheet towards elevator car interior is connected with reinforcing rib, fixed assembly is provided between inner metal sheet and reinforcing rib. This kind of elevator fireproof car door plate, by the setting of fixed assembly, prevent reinforcing rib and inner metal sheet connection loose, offset inner metal sheet thermal expansion and cold shrink deformation, avoid the problem that traditional structure leads to fireproof layer breakage due to connection loose.

Description

Technical Field

[0001] This utility model relates to the field of elevator component technology, and in particular to a fireproof elevator car door panel. Background Technology

[0002] An elevator is an electromechanical vertical transportation device that is electrically driven and relies on a car to run vertically or inclined along fixed guide rails. It is used to carry people and goods in buildings or specific locations. It is usually equipped with a door control system, safety protection devices, control system and drive system, and can realize automatic start and stop, floor positioning and door opening and closing. It is one of the core infrastructures in modern buildings to ensure efficient passage of people and convenient transfer of goods. With the development of the construction industry, elevators, as vertical transportation tools, are widely used in various types of buildings. In the event of a fire, the elevator car door panel must have fire resistance to ensure passenger safety and prevent the spread of fire in the elevator shaft. Therefore, a fireproof elevator car door panel is particularly needed.

[0003] However, traditional elevator car door panels have insufficient fire resistance. For example, ordinary metal car door panels are prone to deformation at high temperatures and cannot effectively block the transfer of flames and heat. Some car door panels that use fire-resistant materials have poor fire resistance and heat insulation due to unreasonable structural design. Moreover, under long-term high-temperature environments, the internal fire-resistant materials are prone to fall off and shift, affecting fire resistance. Utility Model Content

[0004] The purpose of this utility model is to provide a fireproof elevator car door panel to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fireproof elevator car door panel, comprising a transmission assembly, an elevator car being disposed on the surface of the transmission assembly, a car foot guard being installed on one side bottom of the elevator car, an outer metal plate being disposed on the surface of the elevator car, an inner metal plate being connected to the inner side of the outer metal plate, fireproof sealing strips being installed around the outer and inner metal plates, a connecting assembly being disposed between the outer and inner metal plates, a fireproof and heat-insulating layer being disposed between the outer and inner metal plates, a reinforcing rib being connected to the side of the inner metal plate facing the interior of the elevator car, and a fixing assembly being disposed between the inner metal plate and the reinforcing rib; The fixing component includes a screw rod that passes through and connects to the edge between the inner metal plate and the reinforcing rib. A nut is connected to the outer end of the screw rod, and a fixing rod is connected inside the nut. A tension groove is formed inside the fixing rod, and a limiting plate is slidably connected inside the tension groove. A limiting block is connected to the side of the limiting plate, and a limiting groove is formed inside the tension groove. The limiting block and the limiting groove are slidably engaged. A pull rod is connected to the outer side of the tension groove on the surface of the limiting plate, and a tension spring is connected to the outer side of the pull rod. Pull plates are connected to the outer ends of both the pull rod and the tension spring, and a retaining strip is connected to the side of the pull plate. A retaining groove is formed on the surface of the reinforcing rib.

[0006] Preferably, the connecting assembly includes a connecting hole formed on the surface of the outer metal plate and the inner metal plate. A heat-insulating connecting post is installed on the inner wall of the connecting hole. One end of the heat-insulating connecting post is provided with a threaded section. A locking nut is threaded onto the outer wall of the threaded section. A stop block is connected to the other end of the heat-insulating connecting post. A rivet shell is connected inside the heat-insulating connecting post. A nail core is connected inside the rivet shell.

[0007] Preferably, the connecting holes and the heat-insulating connecting posts are provided in multiple identical sets on the surfaces of the outer metal plate and the inner metal plate, and each set is distributed at equal intervals.

[0008] Preferably, one end of the nail core is provided with an enlarged head, the diameter of which is larger than the inner diameter of the rivet shell, the other end of the nail core penetrates the rivet shell and extends to the outside of the heat-insulating connecting post, and the surface of the extended section of the nail core is provided with a breakable groove.

[0009] Preferably, the fireproof and heat-insulating layer includes ceramic fiber felt, which is connected to the inner surface of the outer metal plate. A perlite board is connected to the inner surface of the inner metal plate near the outer metal plate. Fireproof and flame-retardant adhesive is provided on the surfaces of both the ceramic fiber felt and the perlite board.

[0010] Preferably, each side of the ceramic fiber felt and the perlite board is coated with fire-retardant adhesive, and the ceramic fiber felt and the perlite board are fixedly connected between the outer metal plate and the inner metal plate by fire-retardant adhesive.

[0011] Preferably, multiple sets of the reinforcing ribs are provided on the inner side of the inner metal plate, and the reinforcing ribs in each set are distributed at equal intervals in a cross shape.

[0012] Preferably, the limiting plate slides on the inner wall of the stretching groove via the limiting block and the limiting groove. The outer wall dimension of the limiting plate matches the inner wall dimension of the stretching groove, and the dimension of the limiting block is precisely matched with the dimension of the limiting groove.

[0013] Preferably, one end of the tension spring is sleeved on the outer wall of the pull rod, and one end of the tension spring is fixedly connected to the end face of the fixed rod, while the other end of the tension spring is fixedly connected to the inner surface of the pull plate.

[0014] Preferably, the card strips are symmetrically distributed in a cross shape around the center of the pull plate in four identical groups, and the outer wall dimensions of the card strips match the inner wall dimensions of the card slots.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This fireproof elevator car door panel achieves a firm connection between the outer and inner metal plates through the setting of connecting components, preventing the metal plates from loosening or deforming under high temperatures, and solving the problems of traditional metal car door panels being prone to deformation at high temperatures and rapid heat transfer.

[0016] This type of fireproof elevator door panel, through the setting of fixing components, prevents the connection between the reinforcing rib and the inner metal plate from becoming loose, offsets the thermal expansion and contraction deformation of the inner metal plate, and avoids the problem of fireproof layer damage caused by loose connection in traditional structures.

[0017] This new type of fireproof elevator car door panel, through the installation of a fireproof and heat-insulating layer, can prevent the fireproof material from falling off or shifting under high temperatures, thus solving the problems of poor fireproof and heat-insulating effect and easy material failure caused by unreasonable structural design of traditional fireproof car door panels. Attached Figure Description

[0018] Figure 1 This is a side view of the structure of the present utility model; Figure 2 This is a schematic diagram of the elevator car door structure of this utility model; Figure 3 This is a schematic diagram of the back side view of the inner metal plate structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of the outer metal plate and the inner metal plate of this utility model; Figure 5 This is a schematic diagram of the connecting component structure of this utility model; Figure 6 This is a schematic diagram of the fixing component structure of this utility model; Figure 7 This is a schematic diagram of the fireproof and heat-insulating layer structure of this utility model; Figure 8 This is a schematic diagram of the fixing component structure of this utility model.

[0019] In the diagram: 1. Transmission assembly; 2. Elevator car; 3. Car foot guard; 4. Outer metal plate; 5. Inner metal plate; 6. Fireproof sealing strip; 7. Connecting assembly; 701. Connecting hole; 702. Thermal insulation connecting post; 703. Threaded section; 704. Locking nut; 705. Stop block; 706. Rivet housing; 707. Rivet core; 8. Fireproof and thermal insulation layer; 801. Ceramic fiber felt; 80 2. Perlite board; 803. Fire-retardant adhesive; 9. Reinforcing ribs; 10. Fixing components; 1001. Screw; 1002. Nut; 1003. Fixing rod; 1004. Tension groove; 1005. Limiting plate; 1006. Limiting block; 1007. Limiting groove; 1008. Pull rod; 1009. Tension spring; 1010. Pull plate; 1011. Locking strip; 1012. Locking slot. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-8 This utility model provides a technical solution: a fireproof elevator car door panel, including a transmission assembly 1, an elevator car 2 is provided on the surface of the transmission assembly 1, a car foot guard 3 is installed on the bottom of one side of the elevator car 2, an outer metal plate 4 is installed on the surface of the elevator car 2, an inner metal plate 5 is connected to the inner side of the outer metal plate 4, fireproof sealing strips 6 are installed around the outer metal plate 4 and the inner metal plate 5, a connecting component 7 is provided between the outer metal plate 4 and the inner metal plate 5, a fireproof and heat-insulating layer 8 is provided between the outer metal plate 4 and the inner metal plate 5, a reinforcing rib 9 is connected to the side of the inner metal plate 5 facing the inside of the elevator car 2, and a fixing component 10 is provided between the inner metal plate 5 and the reinforcing rib 9. The fixing component 10 includes a screw 1001, which passes through and connects to the edge between the inner metal plate 5 and the reinforcing rib 9. A nut 1002 is connected to the outer end of the screw 1001. A fixing rod 1003 is connected inside the nut 1002. A tension groove 1004 is formed inside the fixing rod 1003. A limiting plate 1005 is slidably connected inside the tension groove 1004. A limiting block 1006 is connected to the side of the limiting plate 1005. A limiting groove 1007 is formed inside the tension groove 1004. The limiting block 1006 slides with the limiting groove 1007. A pull rod 1008 is connected to the outer side of the tension groove 1004 from the surface of the limiting plate 1005. The outer side of the pull rod 1008 is connected to... A tension spring 1009 is provided, and a pull plate 1010 is connected to the outer end of both the pull rod 1008 and the tension spring 1009. A retaining strip 1011 is connected to the side of the pull plate 1010. A retaining groove 1012 is opened on the surface of the reinforcing rib 9. Through the setting of the fixing component 10, after the reinforcing rib 9 is welded to the inner side of the inner metal plate 5, the operator first aligns the screw 1001 with the preset mounting holes on the edge of the reinforcing rib 9 and the inner metal plate 5, and inserts the screw 1001 through the reinforcing rib 9 and the inner metal plate 5. Then, the nut 1002 is put on the outer end of the screw 1001 and screwing begins. During the screwing process, the retaining strip 1011 on the side of the pull plate 1010 will contact the surface of the reinforcing rib 9, forming a blockage for the screw nut 1002 to be screwed in. At this time, the operator pulls the pull plate 1010 outward. The pull plate 1010 drives the pull rod 1008 connected to it to move outward synchronously. The pull rod 1008 pulls the limiting plate 1005 connected to it to slide in the tension groove 1004 inside the fixed rod 1003. At the same time, the limiting block 1006 on the side of the limiting plate 1005 slides synchronously along the limiting groove 1007 on the inner side of the tension groove 1004 to prevent the limiting plate 1005 from shifting during the sliding process. The tension spring 1009 on the outside of the pull rod 1008 is stretched as the pull rod 1008 moves, storing elastic potential energy. When the screw 1001 is fully screwed into the preset position and the nut 1002 is in contact with the surface of the reinforcing rib 9, the operator releases the pull plate 1010, and the tension spring 1009... 009 releases elastic potential energy, pulling the pull rod 1008 to reset towards the fixed rod 1003. The pull rod 1008 drives the pull plate 1010 to reset synchronously. The locking strip 1011 on the side of the pull plate 1010 then embeds into the pre-set slot 1012 on the surface of the reinforcing rib 9. At this time, the limiting plate 1005 returns to the initial position of the tension groove 1004 under the action of the pull rod 1008. The limiting block 1006 also resets synchronously to the corresponding position of the limiting groove 1007. Through the engagement of the locking strip 1011 and the slot 1012, the nut 1002 and the screw 1001 are locked, preventing the screw 1001 from loosening due to vibration during subsequent use, thus achieving a stable reinforcement of the reinforcing rib 9 and the edge of the inner metal plate 5.

[0022] Furthermore, the connecting component 7 includes a connecting hole 701, which is formed on the surfaces of the outer metal plate 4 and the inner metal plate 5. A heat-insulating connecting post 702 is installed on the inner wall of the connecting hole 701. One end of the heat-insulating connecting post 702 has a threaded section 703, and a locking nut 704 is threaded onto the outer wall of the threaded section 703. A stop block 705 is connected to the other end of the heat-insulating connecting post 702. A rivet shell 706 is connected inside the heat-insulating connecting post 702, and a nail core 707 is connected inside the rivet shell 706. Through the arrangement of the connecting component 7, when assembling the outer metal plate 4 and the inner metal plate 5, the heat-insulating connecting post 702 is first inserted into the pre-set connecting hole 701 on the surfaces of the outer metal plate 4 and the inner metal plate 5. At this time, the stop block 705 at one end of the heat-insulating connecting post 702 fits against the outer surface of the outer metal plate 4, forming an initial constraint on the heat-insulating connecting post 702. Then, the rivet shell 706 is inserted into the other end of the heat-insulating connecting post 702, so that the rivet shell 706 runs through the entire heat-insulating connecting post 702. Next, a locking nut 704 is screwed into the threaded section 703 of the heat-insulating connecting post 702 that extends out of the inner metal plate 5. By tightening the locking nut 704, the outer metal plate 4, the inner metal plate 5 and the heat-insulating connecting post 702 are tightly fitted together. Finally, a riveting tool is used to clamp the outer end of the rivet core 707 and apply tension. The rivet core 707 causes the end of the rivet shell 706 to expand and deform. The expanded rivet shell 706 is tightly engaged with the inner wall of the heat-insulating connecting post 702 and abuts against the inner side of the locking nut 704. With the clamping action of the stop block 705 and the locking nut 704, the outer metal plate 4 and the inner metal plate 5 are firmly connected, and the heat transfer path between the two metal plates is blocked by the heat-insulating connecting post 702.

[0023] Furthermore, multiple sets of the same connecting holes 701 and heat-insulating connecting posts 702 are provided on the surfaces of the outer metal plate 4 and the inner metal plate 5, and each set is equally spaced. Through the setting of connecting holes 701 and heat-insulating connecting posts 702, the multiple sets of equally spaced connecting holes 701 and heat-insulating connecting posts 702 can evenly distribute the clamping force between the outer metal plate 4 and the inner metal plate 5 to each connection point, avoiding local stress concentration that could cause deformation of the metal plate. At the same time, the equally spaced layout ensures that the two metal plates always remain parallel, preventing the fireproof and heat-insulating layer 8 from being squeezed and damaged due to uneven connection, further ensuring the stability of the overall structure and the fireproof and heat-insulating effect.

[0024] Furthermore, one end of the rivet core 707 is provided with an enlarged head, the diameter of which is larger than the inner diameter of the rivet shell 706. The other end of the rivet core 707 penetrates through the rivet shell 706 and extends to the outside of the heat-insulating connecting post 702. The surface of the extension section of the rivet core 707 is provided with a breakable groove. Through the arrangement of the rivet shell 706 and the rivet core 707, the enlarged head of the rivet core 707 can squeeze the end of the rivet shell 706 during riveting, so that the rivet shell 706 expands and tightly engages with the inner wall of the heat-insulating connecting post 702, thereby enhancing the connection between the heat-insulating connecting post 702 and the two metal plates. The breakable groove of the extension section of the rivet core 707 can break precisely after the riveting is in place, avoiding the exposure of excess rivet core 707 and affecting the installation of other components. At the same time, it ensures that the rivet shell 706 always remains in an expanded and locked state, preventing the connection from loosening.

[0025] Furthermore, the fireproof and heat-insulating layer 8 includes a ceramic fiber felt 801, which is connected to the inner surface of the outer metal plate 4. A perlite board 802 is connected to the surface of the inner metal plate 5 near the outer metal plate 4. Both the ceramic fiber felt 801 and the perlite board 802 are provided with fire-retardant adhesive 803. Through the setting of the fireproof and heat-insulating layer 8, the ceramic fiber felt 801 on the inner side of the outer metal plate 4 can directly resist the external high temperature and prevent the flame from directly contacting the inner structure. The perlite board 802 on one side of the inner metal plate 5 can further block heat transfer, forming a double heat insulation barrier, effectively reducing the speed at which heat penetrates into the elevator car 2 during a fire, giving the people in the car more time to escape, and protecting the inner metal plate 5 and the reinforcing ribs 9 from high temperature damage.

[0026] Furthermore, each side of the ceramic fiber felt 801 and the perlite board 802 is coated with fire-retardant adhesive 803, and both the ceramic fiber felt 801 and the perlite board 802 are fixedly connected between the outer metal plate 4 and the inner metal plate 5 by the fire-retardant adhesive 803. Through the setting of the fire-retardant adhesive 803, the fire-retardant adhesive 803 on each side of the ceramic fiber felt 801 and the perlite board 802 can firmly bond the two fireproof materials between the outer metal plate 4 and the inner metal plate 5, preventing the fireproof materials from falling off or shifting at high temperatures. At the same time, the fire-retardant adhesive 803 itself has flame-retardant properties, which can fill the tiny gaps between the fireproof materials, preventing flames or high-temperature smoke from passing through the gaps, further improving the overall sealing and fireproof reliability of the fireproof insulation layer 8.

[0027] Furthermore, multiple sets of reinforcing ribs 9 are provided on the inner side of the inner metal plate 5, and each set of reinforcing ribs 9 is distributed at equal intervals in a cross shape. Through the setting of reinforcing ribs 9, multiple sets of reinforcing ribs 9 distributed at equal intervals in a cross shape can form a skeleton support structure on the inner side of the inner metal plate 5, which greatly improves the bending and deformation resistance of the inner metal plate 5. Under high temperature environment, it can offset the deformation stress of the inner metal plate 5 caused by thermal expansion and contraction, avoid the inner metal plate 5 from sinking or warping, and at the same time prevent the fireproof and heat insulation layer 8 from being squeezed and damaged due to the deformation of the metal plate, thus ensuring the overall structural stability of the car door panel.

[0028] Furthermore, the limiting plate 1005 slides on the inner wall of the stretching groove 1004 via the limiting block 1006 and the limiting groove 1007. The outer wall dimension of the limiting plate 1005 matches the inner wall dimension of the stretching groove 1004, and the dimension of the limiting block 1006 is precisely matched with the dimension of the limiting groove 1007. Through the arrangement of the stretching groove 1004, the limiting plate 1005, the limiting block 1006, and the limiting groove 1007, the limiting plate 1005 and the stretching groove are closely aligned. The size of 1004 matches, ensuring that the limiting plate 1005 slides without deviation in the stretch groove 1004. The precise fit between the limiting block 1006 and the limiting groove 1007 can limit the sliding trajectory and range of the limiting plate 1005, preventing the limiting plate 1005 from getting stuck or disengaging from the stretch groove 1004 during the sliding process. This ensures that the pull rod 1008 drives the pull plate 1010 to move smoothly, and ensures that the locking strip 1011 can be accurately aligned with the locking groove 1012.

[0029] Furthermore, one end of the tension spring 1009 is sleeved on the outer wall of the pull rod 1008, and one end of the tension spring 1009 is fixedly connected to the end face of the fixed rod 1003. The other end of the tension spring 1009 is fixedly connected to the inner surface of the pull plate 1010. With the tension spring 1009, one end of the tension spring 1009 is fixed to the end face of the fixed rod 1003, and the other end is fixed to the inner side of the pull plate 1010. When the pull plate 1010 is pulled outward, elastic potential energy can be stored. After the pull plate 1010 is released, the tension spring 1009 can release the elastic potential energy and automatically pull the pull plate 1010 to reset, so that the clip 1011 can be quickly embedded in the slot 1012 without manual pushing of the pull plate 1010, simplifying the operation process. At the same time, the continuous elastic force of the tension spring 1009 can keep the clip 1011 tightly attached to the inner wall of the slot 1012, preventing the clip 1011 from falling out of the slot 1012 due to vibration.

[0030] Furthermore, four identical sets of locking strips 1011 are symmetrically distributed in a "+" shape around the center of the pull plate 1010, and the outer wall size of the locking strip 1011 matches the inner wall size of the locking groove 1012. Through the setting of the locking strips 1011 and the locking groove 1012, the four sets of symmetrically distributed "+"-shaped locking strips 1011 and the locking groove 1012 match the size, which can lock the nut 1002 from multiple directions, preventing the nut 1002 from rotating due to vibration. After the locking strip 1011 is embedded in the locking groove 1012, it can directly restrict the rotational freedom of the nut 1002, prevent the screw 1001 from loosening, and thus ensure that the reinforcement effect of the reinforcing rib 9 and the edge of the inner metal plate 5 is always stable, and prevent the reinforcing rib 9 from losing its support function due to the loosening of the screw 1001.

[0031] Working principle: First, the core structure is constructed. A fireproof and heat-insulating layer 8 is assembled between the outer metal plate 4 and the inner metal plate 5. Fire-retardant adhesive 803 is applied to each side of the ceramic fiber felt 801 and the perlite board 802. The ceramic fiber felt 801 is bonded to the inner side of the outer metal plate 4, and the perlite board 802 is bonded to the side of the inner metal plate 5 closest to the outer layer. The fire-retardant adhesive 803 not only fixes the two fireproof materials but also fills gaps to block smoke penetration, forming a double heat-insulating barrier. Next, the outer metal plate 4 and the inner metal plate 5 are connected by connecting components 7. Multiple sets of equally spaced heat-insulating connecting columns 702 are inserted into the pre-set connecting holes 701 in the two metal plates. The blocks 705 at one end of the heat-insulating connecting columns 702 provide initial positioning. Then, the willow... The rivet shell 706 is inserted into the interior of the heat-insulating connecting column 702. A locking nut 704 is screwed into and tightened onto the threaded section 703 of the heat-insulating connecting column 702 extending from the inner metal plate 5, ensuring a tight fit between the two metal plates and the heat-insulating connecting column 702. Finally, a rivet tool is used to pull the rivet core 707, causing its enlarged head to press against the end of the rivet shell 706, causing it to expand and engage with the inner wall of the heat-insulating connecting column 702, thus securing it against the locking nut 704. The easily broken groove of the extended section of the rivet core 707 precisely breaks, completing the secure connection between the two metal plates. Simultaneously, the heat-insulating connecting column 702 blocks heat transfer. Subsequently, reinforcing ribs 9 are installed on the side of the inner metal plate 5 facing the elevator car 2. Multiple sets of evenly spaced "+" shaped reinforcing ribs 9 are welded onto the inner metal plate 5, and then secured by the fixing assembly 10. To secure the edge, thread the screw 1001 through the mounting hole between the reinforcing rib 9 and the edge of the inner metal plate 5, and screw on the nut 1002. During screwing, if the retaining strip 1011 on the side of the pull plate 1010 blocks the movement, pull the pull plate 1010 outwards. This causes the pull rod 1008 and the limiting plate 1005 to slide within the tension groove 1004 of the fixing rod 1003. The limiting block 1006 slides synchronously along the limiting groove 1007 to prevent displacement. The tension spring 1009 is stretched to store potential energy. After the screw 1001 is fully screwed in and the nut 1002 is in contact with the reinforcing rib 9, release the pull plate 1010. The tension spring 1009 releases its potential energy, pulling the pull plate 1010 back to its original position. The four sets of cross-shaped retaining strips 1011 embed into the retaining grooves 1012 of the reinforcing rib 9, locking the nut 1002 and the screw 1001 in place. 01. To prevent loosening, fireproof sealing strips 6 are installed around the two metal plates to complete the overall assembly of the car door panel. The assembled car door panel is installed on the surface of the elevator car 2. The elevator car 2 moves up and down through the transmission assembly 1. The bottom car foot guard 3 provides protection. In the event of a fire, the outer metal plate 4 resists the impact of external flames, the ceramic fiber felt 801 of the fireproof and heat-insulating layer 8 blocks high temperatures, and the perlite wool board 802 further insulates, reducing heat penetration into the car. The fireproof sealing strips 6 block smoke from entering through the door gaps, and the skeleton support of the reinforcing ribs 9 counteracts the thermal deformation of the inner metal plate 5, preventing damage to the fireproof and heat-insulating layer 8. The stable connection between the connecting component 7 and the fixing component 10 ensures that the overall structure does not loosen, comprehensively protecting the safety of personnel inside the elevator car 2.This buys time for escape, thus completing the process of using a fireproof elevator car door panel.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fireproof elevator car door panel, comprising a transmission assembly (1), characterized in that: The surface of the transmission assembly (1) is provided with an elevator car (2), a car foot guard (3) is installed on the bottom of one side of the elevator car (2), an outer metal plate (4) is installed on the surface of the elevator car (2), an inner metal plate (5) is connected to the inner side of the outer metal plate (4), fireproof sealing strips (6) are installed around the outer metal plate (4) and the inner metal plate (5), a connecting component (7) is provided between the outer metal plate (4) and the inner metal plate (5), a fireproof heat insulation layer (8) is provided between the outer metal plate (4) and the inner metal plate (5), a reinforcing rib (9) is connected to the side of the inner metal plate (5) facing the inside of the elevator car (2), and a fixing component (10) is provided between the inner metal plate (5) and the reinforcing rib (9). The fixing component (10) includes a screw (1001), which is connected through the edge between the inner metal plate (5) and the reinforcing rib (9). The outer end of the screw (1001) is connected to a nut (1002), and the inside of the nut (1002) is connected to a fixing rod (1003). The inside of the fixing rod (1003) is provided with a tension groove (1004). The inside of the tension groove (1004) is slidably connected to a limit plate (1005). The side of the limit plate (1005) is connected to a limit block (1006). A limiting groove (1007) is provided on the inner side of (1004), and the limiting block (1006) slides in conjunction with the limiting groove (1007). The surface of the limiting plate (1005) extends to the outer side of the tension groove (1004) and is connected to a pull rod (1008). A tension spring (1009) is connected to the outer side of the pull rod (1008). A pull plate (1010) is connected to the outer end of both the pull rod (1008) and the tension spring (1009). A locking strip (1011) is connected to the side of the pull plate (1010). A locking groove (1012) is provided on the surface of the reinforcing rib (9).

2. The fireproof elevator car door panel according to claim 1, characterized in that: The connecting assembly (7) includes a connecting hole (701), which is formed on the surface of the outer metal plate (4) and the inner metal plate (5). A heat-insulating connecting post (702) is installed on the inner wall of the connecting hole (701). One end of the heat-insulating connecting post (702) is provided with a threaded section (703). A locking nut (704) is threaded onto the outer wall of the threaded section (703). A stop block (705) is connected to the other end of the heat-insulating connecting post (702). A rivet shell (706) is connected inside the heat-insulating connecting post (702). A nail core (707) is connected inside the rivet shell (706).

3. The fireproof elevator car door panel according to claim 2, characterized in that: The connecting holes (701) and the heat-insulating connecting posts (702) are provided in multiple sets on the surfaces of the outer metal plate (4) and the inner metal plate (5), and each set is distributed at equal intervals.

4. The fireproof elevator car door panel according to claim 2, characterized in that: One end of the nail core (707) is provided with an enlarged head, the diameter of which is larger than the inner diameter of the rivet shell (706). The other end of the nail core (707) penetrates the rivet shell (706) and extends to the outside of the heat-insulating connecting post (702). The surface of the extension section of the nail core (707) is provided with a breakable groove.

5. The fireproof elevator car door panel according to claim 1, characterized in that: The fireproof and heat-insulating layer (8) includes a ceramic fiber felt (801), which is connected to the inner surface of the outer metal plate (4). The inner metal plate (5) is connected to a perlite board (802) on the side surface near the outer metal plate (4). Both the ceramic fiber felt (801) and the perlite board (802) are provided with fireproof and flame-retardant adhesive (803).

6. The fireproof elevator car door panel according to claim 5, characterized in that: Each side of the ceramic fiber felt (801) and the perlite board (802) is coated with fire-retardant adhesive (803), and the ceramic fiber felt (801) and the perlite board (802) are fixedly connected between the outer metal plate (4) and the inner metal plate (5) by the fire-retardant adhesive (803).

7. The fireproof elevator car door panel according to claim 1, characterized in that: The reinforcing ribs (9) are arranged in multiple identical groups on the inner side of the inner metal plate (5), and each group of reinforcing ribs (9) is distributed in a cross shape with equal spacing.

8. The fireproof elevator car door panel according to claim 1, characterized in that: The limiting plate (1005) slides on the inner wall of the stretching groove (1004) via the limiting block (1006) and the limiting groove (1007). The outer wall size of the limiting plate (1005) matches the inner wall size of the stretching groove (1004), and the size of the limiting block (1006) is precisely matched with the size of the limiting groove (1007).

9. The fireproof elevator car door panel according to claim 1, characterized in that: One end of the tension spring (1009) is sleeved on the outer wall of the pull rod (1008), and one end of the tension spring (1009) is fixedly connected to the end face of the fixed rod (1003), while the other end of the tension spring (1009) is fixedly connected to the inner surface of the pull plate (1010).

10. The fireproof elevator car door panel according to claim 1, characterized in that: The card strips (1011) are symmetrically distributed in a cross shape around the center of the pull plate (1010) in four identical groups, and the outer wall dimensions of the card strips (1011) match the inner wall dimensions of the card slots (1012).

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