Fireproof elevator landing door

Abstract

The present invention discloses a fireproof elevator floor door, comprising a door panel, a fireproof sealing plate, a swing arm, a first rotating connection, a second rotating connection, a fixed support member, a limit rod and a first blocking member; the fixed support member is fixedly mounted on the door panel, and the swing arm is rotatably mounted on the fixed support member through the first rotating connection; the fireproof sealing plate is rotatably mounted on one end of the swing arm through the second rotating connection, and the limit rod is mounted on the other end of the swing arm; the first blocking member is fixedly connected to the door panel or the fixed support member through a hot-melt adhesive and contacts with the limit rod, so that the fireproof sealing plate is maintained in a first preset position, and the first preset position makes the fireproof sealing plate not cover the gap of the door panel; the hot-melt adhesive has a preset failure temperature, and when the hot-melt adhesive fails, the fireproof sealing plate is maintained in the second preset position, and the second preset position makes the fireproof sealing plate cover the gap of the door panel.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a fireproof elevator landing door. Background Art

[0002] In fire-resistant elevator landing doors, traditional fixed labyrinth-style fireproof sealing panels serve as a key fire isolation measure. Their original design was to effectively block the vertical propagation of flames and smoke through the elevator hoistway during a fire emergency, thereby protecting passengers and minimizing damage to the building. However, the structural design of these sealing panels presents certain limitations in practical application. Due to their fixed size and shape, additional space is required to accommodate the protruding fireproof sealing panels during elevator door opening, which necessitates a corresponding increase in the door's travel. This increased travel not only impacts elevator operating efficiency but also places higher demands on the elevator hoistway's civil engineering design. In particular, hoistway width may require adjustments to accommodate the fireproof sealing panels, increasing construction costs and complexity. Furthermore, this design can impact the elevator's aesthetics and passenger experience. Therefore, the current technical challenge facing the design of fire-resistant elevator landing doors is to improve the elevator's fire resistance while minimizing the impact on civil engineering. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a fireproof elevator landing door, comprising a door panel, a fireproof sealing plate, a swing arm, a first rotating connector, a second rotating connector, a fixed support member, a limit rod and a first blocking member;

[0004] The fixed support member is fixedly mounted on the door panel, and the swing arm is rotatably mounted on the fixed support member via a first rotating connection member;

[0005] The fireproof sealing plate is rotatably mounted on one end of the swing arm via a second rotating connector, and the limit rod is mounted on the other end of the swing arm;

[0006] The first blocking member is fixedly connected to the door panel or the fixed support member by a hot melt adhesive and contacts the limiting rod to keep the fireproof sealing plate in a first preset position, wherein the first preset position is such that the fireproof sealing plate does not block the gap of the door panel;

[0007] The hot melt adhesive has a preset failure temperature. When the hot melt adhesive fails, the fireproof sealing plate is kept at a second preset position. The second preset position enables the fireproof sealing plate to cover the gap of the door panel.

[0008] Preferably, the fireproof elevator floor door includes a second blocking member, which is fixedly connected to the door panel or the fixed support member; when the hot melt adhesive is effective, it acts together with the first blocking member on the limit rod to keep the fireproof sealing plate in the first preset position.

[0009] Preferably, when the hot melt adhesive fails, the fireproof sealing plate moves from the first preset position to the second preset position in a plane parallel to the door panel.

[0010] Preferably, the hot melt adhesive has a preset failure temperature of about 200 degrees Celsius.

[0011] Preferably, the first blocking member is connected to the fixed support member via a latch.

[0012] Preferably, the first blocking member is connected to the second blocking member via a latch.

[0013] Preferably, when the hot melt adhesive fails, the fireproof sealing plate moves from the first preset position to the second preset position by its own gravity.

[0014] Preferably, the fireproof elevator landing door further has a driving member, and when the hot melt adhesive fails, the fireproof sealing plate moves from the first preset position to the second preset position by the driving force of the driving member.

[0015] Preferably, the driving member is a torsion spring or a spring.

[0016] This invention utilizes the temperature failure mechanism of the hot-melt adhesive to achieve automatic deployment of the fireproof sealing panel, effectively resolving the existing issue of fireproof sealing panels impacting normal elevator operation and civil engineering structures. It offers advantages such as structural rationality, rapid response, and safety and reliability. Furthermore, the design fully considers the aesthetics and practicality of elevator landing doors, ensuring efficient fireproofing in the event of a fire while maintaining normal elevator operation and passenger comfort during daily use.

[0017] The present invention also provides a fireproof elevator landing door, comprising a door panel, a fireproof sealing plate, a fixed support member, a driving member, a triggering member and a temperature monitoring device;

[0018] The fixed support member is fixedly mounted on the door panel, the driving member and the triggering member are mounted on the fixed support member, and the fireproof sealing plate is connected to the driving member;

[0019] The temperature monitoring device monitors the surface temperature of the door panel; when the surface temperature of the door panel reaches or exceeds a preset temperature, the trigger element is controlled to change from a non-trigger state to a trigger state; when the surface temperature of the door panel is lower than the preset temperature, the trigger element is controlled to remain in the non-trigger state;

[0020] When the trigger member is in a non-triggering state, the trigger member constrains the driving member so that the driving member maintains the fireproof sealing plate in a first preset position, and the first preset position prevents the fireproof sealing plate from covering the gap of the door panel; when the trigger member is in a triggering state, the trigger member releases the driving member so that the driving member maintains the fireproof sealing plate in a second preset position, and the second preset position allows the fireproof sealing plate to cover the gap of the door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figures 1 to 3 This is a structural diagram of a fireproof elevator landing door according to Example 1;

[0023] Figure 4 Schematic diagram of the fireproof sealing plate of the fireproof elevator landing door of Example 1 being located at the second preset position;

[0024] Figure 5 Schematic diagram of the fireproof elevator door structure of Example 2. DETAILED DESCRIPTION

[0025] The following describes the implementation manner of the present invention through specific specific embodiments. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation manners, and the various details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0026] Example 1: Figures 1 to 3 As shown, this embodiment provides a door panel 1, a fireproof sealing plate 4, a swing arm 3, a first rotating connector 8, a second rotating connector 7, a fixed support member 2, a limiting rod 9 and a first blocking member 5; the fixed support member 2 is fixedly mounted on the door panel 1, and the swing arm 3 is rotatably mounted on the fixed support member 2 via the first rotating connector 8;

[0027] The fireproof sealing plate 4 is rotatably mounted on one end of the swing arm 3 via a second rotating connector 7, and the limiting rod 9 is mounted on the other end of the swing arm 3;

[0028] The first blocking member 5 is fixedly connected to the door panel 1 or the fixed support member by a hot melt adhesive 11 and contacts the limiting rod 9 to keep the fireproof sealing plate 4 in the first preset position. The first preset position ensures that the fireproof sealing plate 4 does not block the gap of the door panel 1.

[0029] The hot melt adhesive 11 has a preset failure temperature. When the hot melt adhesive 11 fails, the fireproof sealing plate 4 is kept at the second preset position. The second preset position allows the fireproof sealing plate 4 to cover the gap of the door panel 1 (such as Figure 4 shown).

[0030] The hot-melt adhesive 11 has a preset failure temperature of approximately 200°C. When the ambient temperature rises above 200°C due to a fire, the hot-melt adhesive 11 will fail, causing the first blocking member 5 to separate from the door panel 1 or the fixed support member to lose its retaining effect on the retaining rod 9. Under the influence of gravity, the fireproof sealing plate 4 rotates around the first rotating connector 8 until the retaining rod 9 contacts the fixed support member, completing the movement from the first preset position to the second preset position. At this point, the fireproof sealing plate 4 covers the gap in the door panel 1, achieving a fireproof seal.

[0031] In this embodiment, as viewed from the inside of the shaft, the fireproof sealing plate 4 is provided on the right door panel 1. Alternatively, a fireproof sealing plate 4 may be symmetrically provided on the left door panel 1. The first blocking member 5 may be provided on the upper swing arm 3 or alternatively on the lower swing arm 3.

[0032] In order to better constrain the position of the fireproof sealing plate 4, the fireproof elevator floor door includes a second blocking member 6, which is fixedly connected to the door panel 1 or the fixed support member; when the hot melt adhesive 11 is effective, it acts together with the first blocking member 5 on the limiting rod 9 to keep the fireproof sealing plate 4 in the first preset position.

[0033] Preferably, when the hot melt adhesive 11 fails, the fireproof sealing plate 4 moves from the first preset position to the second preset position in a plane parallel to the door panel 1. Controlling the movement of the fireproof sealing plate 4 within a plane can save space and avoid interference with the side components of the car.

[0034] Preferably, the first blocking member 5 is connected to the fixed support member 2 or the second blocking member 6 via a latch 10, so that the first blocking member 5 will not be separated from the door panel 1 after the hot melt adhesive 11 fails, thereby facilitating subsequent re-fixation.

[0035] In this embodiment, the fireproof sealing plate 4 moves from the first preset position to the second preset position by its own gravity.

[0036] Optionally, a driving member may be installed to move the fireproof sealing plate 4 from the first preset position to the second preset position by the driving force of the driving member when the hot melt adhesive 11 fails. The driving member may be, for example, a torsion spring installed on the first rotating connector 8 or a spring fixed to one end of the limiting rod 9.

[0037] This embodiment utilizes the temperature failure mechanism of the hot-melt adhesive to achieve automatic deployment of the fireproof sealing panel, effectively resolving the existing issue of fireproof sealing panels impacting normal elevator operation and civil engineering structures. It offers advantages such as structural rationality, rapid response, and safety and reliability. Furthermore, the aesthetics and practicality of the elevator landing doors are fully considered, ensuring efficient fireproofing in the event of a fire while maintaining normal elevator operation and passenger comfort during daily use.

[0038] Example 2: Figure 5 As shown, this embodiment provides a fireproof elevator landing door, comprising a door panel 1, a fireproof sealing plate 4, a fixed support member 2, a driving member 14, a trigger member 15 and a temperature monitoring device 16;

[0039] The fixed support member 2 is fixedly mounted on the door panel 1 , the driving member 14 and the trigger member 15 are mounted on the fixed support member 2 , and the fireproof sealing plate 4 is connected to the driving member 14 ;

[0040] The temperature monitoring device 16 monitors the surface temperature of the door panel 1; when the surface temperature of the door panel 1 reaches or exceeds a preset temperature, the triggering element 15 is controlled to change from a non-triggering state to a triggering state; when the surface temperature of the door panel 1 is lower than the preset temperature, the triggering element 15 is controlled to remain in the non-triggering state;

[0041] When the trigger member 15 is in a non-triggering state, the trigger member 15 constrains the driving member 14, so that the driving member 14 maintains the fireproof sealing plate 4 in a first preset position, and the first preset position makes the fireproof sealing plate 4 not cover the gap of the door panel 1; when the trigger member 15 is in a triggering state, the trigger member 15 releases the driving member 14, so that the driving member 14 maintains the fireproof sealing plate 4 in a second preset position, and the second preset position makes the fireproof sealing plate 4 cover the gap of the door panel 1.

[0042] The trigger member 15 is, for example, controlled by electromagnetic force to switch between the trigger state and the non-trigger state. The driving member 14 can be a torsion spring and a swing arm driven by it as described in Example 1, or a spring and a guide member that provide horizontal driving.

[0043] The main difference between this embodiment and embodiment 1 is that this embodiment adopts the method of active triggering by the trigger member 15, and the preset temperature can be actively controlled. For example, the preset temperature can be set at 200 degrees Celsius or 230 degrees Celsius. After the hot melt adhesive of embodiment 1 is selected, the preset temperature is determined. Of course, embodiment 1 also has its advantages over embodiment 2. It is more reliable. The temperature monitoring device and trigger member of embodiment 2 are usually electronic devices that require power maintenance and have a certain probability of failure. The trigger member 15 is, for example, controlled by electromagnetic force to switch between the triggered state and the non-triggered state. The driving member 14 can be a torsion spring and a swing arm driven by it as described in embodiment 1, or it can be a spring and a guide member that provide a horizontal drive.

[0044] The present invention has been described in detail above by way of specific embodiments and examples, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may make many variations and improvements, which should also be considered within the scope of protection of the present invention.

Claims

1. A fireproof elevator landing door, characterized in that: It includes a door panel, a fireproof sealing plate, a swing arm, a first rotating connector, a second rotating connector, a fixed support member, a limiting rod and a first blocking member; The fixed support member is fixedly mounted on the door panel, and the swing arm is rotatably mounted on the fixed support member via a first rotating connection member; The fireproof sealing plate is rotatably mounted on one end of the swing arm via a second rotating connector, and the limit rod is mounted on the other end of the swing arm; The first blocking member is fixedly connected to the door panel or the fixed support member by a hot melt adhesive, and the first blocking member limits the limiting rod so that the fireproof sealing plate is maintained in a first preset position. The first preset position ensures that the fireproof sealing plate does not cover the gap of the door panel; The hot melt adhesive has a preset failure temperature. When the hot melt adhesive fails, the first blocking member detaches from the door panel or the fixed support member and loses its limiting effect on the limiting rod. The fireproof sealing plate rotates around the first rotating connection member so that the fireproof sealing plate remains in a second preset position. The second preset position allows the fireproof sealing plate to cover the gap of the door panel.

2. The fireproof elevator landing door according to claim 1, characterized in that: The fireproof elevator floor door includes a second blocking member, which is fixedly connected to the door panel or the fixed support member; when the hot melt adhesive is effective, it acts together with the first blocking member on the limiting rod to keep the fireproof sealing plate in the first preset position.

3. The fireproof elevator landing door according to claim 1, characterized in that: When the hot melt adhesive fails, the fireproof sealing plate moves from the first preset position to the second preset position, which is a plane parallel to the door panel.

4. The fireproof elevator landing door according to claim 1, characterized in that: The hot melt adhesive has a preset failure temperature of approximately 200 degrees Celsius.

5. The fireproof elevator landing door according to claim 1, characterized in that: The first blocking member is connected to the fixed support component through a latch.

6. The fireproof elevator landing door according to claim 2, characterized in that: The first blocking member is connected to the second blocking member through a latch.

7. The fireproof elevator landing door according to claim 1, characterized in that: When the hot melt adhesive fails, the fireproof sealing plate moves from the first preset position to the second preset position by its own gravity.

8. The fireproof elevator landing door according to claim 1, characterized in that: The fireproof elevator landing door further comprises a driving member, and when the hot melt adhesive fails, the fireproof sealing plate moves from the first preset position to the second preset position by the driving force of the driving member.

9. The fireproof elevator landing door according to claim 8, characterized in that: The driving member is a spring.

Images