Fireproof landing door of elevator

Abstract

The utility model discloses a fireproof landing door of an elevator, which comprises a door hanger, a ground sill, a door outer frame connected with the door hanger and the ground sill, a low-speed small door plate, a high-speed small door plate, a high-speed large door plate and a low-speed large door plate, the low-speed small door plate and the high-speed small door plate are connected through a U-shaped reverse buckling structure, the high-speed large door plate and the low-speed large door plate are connected through a U-shaped reverse buckling structure, and the closed position where the high-speed small door plate and the high-speed large door plate are connected is of a staggered structure. A lower door lock hook is arranged on the lower portion of the large fast door plate, a notch matched with the lower door lock hook is correspondingly formed in the lower portion of the small fast door plate, and a connecting rope connected with the lower door lock hook is arranged on the door hanger. Inverted buckle structures are adopted between the large door plates and between the small door plates, gaps between the doors are reduced through the structures, in addition, the strength is increased through interaction when the doors are deformed when the doors are heated, and the large door plates and the small door plates are mutually buckled and opened by not exceeding 6 mm when the doors are heated.

Description

Technical Field

[0001] The utility model relates to the field of elevator equipment, in particular to an elevator fireproof landing door. Background Art

[0002] The elevator fireproof door is an important part of elevator safety. Its function is to prevent the spread of fire to the elevator shaft in case of a fire and ensure the safety of personnel.

[0003] The materials of the elevator fireproof door should generally be steel plates, glass, non-combustible materials, etc. The steel plates should comply with the standard of GB / T1591-2018, the glass should comply with the standard of GB / T9963-2015, and the non-combustible materials should comply with the standard of GB / T8624-2012. The material selection should be based on the special conditions of the elevator shaft. For example, in high-rise buildings, materials with better fireproof performance should be selected.

[0004] The size of the elevator fireproof door should generally be 2000mm×2100mm, and the thickness of the door leaf should not be less than 50mm. The opening direction of the door leaf should correspond to that of the elevator door, and the door leaf should open outwards so that people can escape smoothly in case of a fire. The sealing performance of the door leaf should comply with the national standard to ensure that the fire cannot spread through the door gap in case of a fire.

[0005] The door leaf of the elevator fireproof door should be installed in the elevator shaft, and there should be a certain gap between the door leaf and the shaft wall so that the door leaf can open smoothly in case of a fire. The installation of the door leaf should be firm and reliable, and a sealing strip should be used between the door leaf and the door frame to ensure the sealing performance of the door leaf.

[0006] At present, the main problems of the elevator fireproof landing door are serious deformation during the fire resistance rating test, and the excessive addition of fireproof filling materials resulting in too thick door panels, which requires re-designing the sill and door hanging structure. In addition, increasing the thickness of the door will also increase the internal size of the shaft. Therefore, it is necessary to design a product that can utilize the existing door hanging and sill. Since the thickness of the door panel cannot be changed, only the gap between the door panels or the structure of the door panels can be reduced to strengthen the strength and reduce the deformation. Summary of the Utility Model

[0007] The purpose of the utility model is to provide an elevator fireproof landing door with fireproof function.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an elevator fireproof floor door, comprising a door hanger, a floor sill and a door outer frame connected to the door hanger and the floor sill, and also comprising a slow small door panel, a fast small door panel, a fast large door panel and a slow large door panel arranged between the door hanger and the floor sill from left to right; wherein the slow small door panel and the fast small door panel are connected by a U-shaped inverted buckle structure, the fast large door panel and the slow large door panel are connected by a U-shaped inverted buckle structure, and the closed part where the fast small door panel and the fast large door panel meet adopts a staggered structure; a lower door lock hook is arranged at the lower part of the fast large door panel, a notch correspondingly opened at the lower part of the fast small door panel matches with the lower door lock hook, a connecting rope connected with the lower door lock hook is arranged on the door hanger, and the lower door lock hook can be closed or opened by the connecting rope.

[0009] Furthermore, the lower door lock hook is hinged on the fast door panel, the upper part of the lower door lock hook is provided with a connecting hole fixed to the connecting rope, the lower part of the lower door lock hook is connected to a return spring, one end of the return spring is connected to the lower part of the lower door lock hook, and the other end is fixedly connected to the fast door panel below the lower door lock hook.

[0010] Furthermore, the slow small door panel, the slow large door panel and the door outer frame are also connected by a U-shaped inverted structure.

[0011] Furthermore, an unlocking connecting rod is connected to the door hook, and the other end of the unlocking connecting rod is connected to the fast small door panel.

[0012] The utility model adopts an undercut structure between the large door panels and the small door panels, which reduces the gap between the doors and interacts with each other when deformed by heat to increase the strength. When heated, they are fastened to each other and the opening will not exceed 6mm.

[0013] When the door needs to be opened, the movable roller on the door hook of the door opener installed on the elevator drives the unlocking link and the lower door lock hook connecting rope to lift up all the door hooks and the lower door lock hook to move out of the locked position to achieve the door opening action; on the contrary, the door closing action is achieved; after the lower door lock hook is lifted up, it rotates downward under the action of the reset spring to achieve reset. When closing the door, the two auxiliary knives of the door opener drive the movable roller on the door hook to lift up the movable lock hook and the connecting rope to pull up the lower door lock hook, so that the lower door lock hook smoothly enters the gap on the other side of the small door panel and then falls down and buckles. At this time, the large and small door panels are buckled together. When heated, the bottom door panel will no longer open to both sides under the action of the lower door lock hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the fireproof door of the utility model;

[0015] Figure 2 forFigure 1 The A-A sectional view in

[0016] Figure 3 is Figure 1 the enlarged view of the structure of the door lock hook in part D of

[0017] Figure 4 is Figure 2 the enlarged view of part B in

[0018] Figure 5 is Figure 2 the enlarged view of part C in Specific embodiments

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Such as Figure 1As shown, the utility model discloses an elevator fireproof floor door, comprising a door hanger 1, a sill 2, and a door outer frame 3 connected to the door hanger 1 and the sill 2, and also comprising a slow small door panel 5, a fast small door panel 4, a fast large door panel 6, and a slow large door panel 7 arranged between the door hanger 1 and the sill 2 from left to right; wherein the slow small door panel 5 and the fast small door panel 4 are connected by a U-shaped inverted buckle structure, and the fast large door panel 6 and the slow large door panel 7 are connected by a U-shaped inverted buckle structure (such as Figure 4 , as shown in the enlarged view of part B); the closing part where the fast small door panel 4 and the fast large door panel 6 are connected adopts a staggered structure (such as Figure 5 , as shown in the enlarged view of part C); the lower portion of the fast door panel 6 is provided with a lower door lock hook 10 (as shown Figure 3 As shown), a notch 12 matching with the lower door lock hook is correspondingly opened at the lower portion of the quick small door panel 4, and a connecting rope 9 connected with the lower door lock hook 10 is arranged on the door hanger 1, and the lower door lock hook 10 can be closed or opened through the connecting rope 9.

[0023] like Figure 3 As shown, the lower door lock hook 10 is hinged on the fast door panel 6, and a connecting hole fixed to the connecting rope 9 is opened on the upper part of the lower door lock hook 10. A return spring 11 is connected to the lower part of the lower door lock hook 10. One end of the return spring 11 is connected to the lower part of the lower door lock hook 10, and the other end is fixedly connected to the fast door panel 6 below the lower door lock hook 10.

[0024] The slow small door panel, the slow large door panel and the door outer frame are also connected by a U-shaped inverted buckle structure.

[0025] An unlocking connecting rod 8 is connected to the door hanger 1 , and the other end of the unlocking connecting rod 8 is connected to the fast small door panel 4 .

[0026] The utility model adopts an inverted structure between the large door panels and the small door panels, which reduces the gap between the doors. In addition, when they are deformed by heat, they interact with each other to increase the strength. When heated, they are fastened to each other and will not open more than 6mm. At the same time, the fast small door panel and the fast large door panel are connected by a lock hook when they are closed. When the door panel expands due to heat, the door panel will no longer open to both sides under the action of the lower door lock hook. The fireproof layer door of the utility model has passed the UL 10B fireproof test and can be sold in some foreign markets that require fireproof requirements. At the same time, it is compatible with the company's ordinary similar doors and can be replaced at any time. It is easy to use and has a broad market prospect.

[0027] The working process of the present utility model is as follows: In the normal operation state, the movable locking hook and the fixed locking hook are closed, and the car door lock cannot be opened; only when it reaches the unlocking area, that is, the area where it can be automatically unlocked, can it be automatically unlocked. At this time, the landing door enters between the two auxiliary door knives. As the door opening machine operates, the hanging plate of the door opening machine moves horizontally, and the mounting plate installed on the door opening machine also translates a certain distance. The auxiliary door knife contacts the landing door roller. Since the landing door is relatively stationary, the landing door roller blocks the auxiliary door knife, while the mounting plate follows the hanging plate of the door opening machine and needs to translate. The roller provided on the movable locking hook, because the rotation center of the movable locking hook is hinged on the mounting plate, during the translation of the rotation center of the movable locking hook along with the mounting plate, this roller is blocked by the auxiliary door knife, forcing the movable locking hook to rotate around the rotation center, and the movable locking hook disengages from the fixed locking hook, and the car door opens; when closing the door, the mounting plate follows the door opening machine and translates in the reverse direction of the door opening. The roller on the movable locking hook is blocked by the other auxiliary door knife, forcing the movable locking hook to close with the fixed locking hook; when the elevator stops in the unlocking area due to a fault, the door opening machine stops running, and the passenger opens the car door lock by prying open the car door. The unlocking principle is the same as the automatic unlocking in the normal operation state; when the elevator stops outside the area due to a fault, at this time, the roller of the landing door does not enter between the two auxiliary door knives, the auxiliary door knife cannot contact the landing door roller, and the car door lock cannot be opened; when the elevator stops in the unlocking area due to a fault and the passenger is unable to pry open the car door, the rescue personnel can use a key to open the landing door lock and then pry open the landing door a certain distance. When the landing door lock roller on the elevator door opening mechanism enters between the two auxiliary knives of the door opening machine, the door opening action can be achieved. The lower locking hook is connected to the bracket installed on the movable locking hook through a connecting rope (steel wire rope), and the actions of the movable locking hook and the bottom locking hook are synchronized; the notch opened on the quick small door panel is regarded as the fixed locking hook, the lower locking hook is regarded as another movable locking hook, and the rotation center of the bottom locking hook is hinged on the quick large door panel, so it also translates when the door stop translates.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An elevator fireproof landing door, comprising a door hanger, a sill, and an outer door frame connected to the door hanger and the sill, characterized in that: It also includes a slow small door panel, a fast small door panel, a fast large door panel, and a slow large door panel, which are arranged between the door hanger and the ground sill from left to right; wherein the slow small door panel and the fast small door panel are connected by a U-shaped inverted buckle structure, the fast large door panel and the slow large door panel are connected by a U-shaped inverted buckle structure, and the closed part where the fast small door panel and the fast large door panel meet adopts a staggered structure; a lower door lock hook is arranged at the lower part of the fast large door panel, and a notch correspondingly opened at the lower part of the fast small door panel matches the lower door lock hook, and a connecting rope connected to the lower door lock hook is arranged on the door hanger, and the lower door lock hook can be closed or opened by the connecting rope.

2. The elevator fireproof landing door according to claim 1, characterized in that: The lower door lock hook is hinged on the fast door panel, the upper part of the lower door lock hook is provided with a connecting hole fixed to the connecting rope, the lower part of the lower door lock hook is connected to a return spring, one end of the return spring is connected to the lower part of the lower door lock hook, and the other end is fixedly connected to the fast door panel below the lower door lock hook.

3. The elevator fireproof landing door according to claim 1, characterized in that: The slow small door panel, the slow large door panel and the door outer frame are also connected by a U-shaped inverted buckle structure.

4. The elevator fireproof landing door according to claim 1, characterized in that: The door hanger is connected with an unlocking connecting rod, and the other end of the unlocking connecting rod is connected to the fast small door panel.

5. The fireproof landing door according to claim 1, characterized in that: The connecting rope is a steel wire rope.

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