Fireproof door for marine elevators

Abstract

This utility model relates to a fireproof door for marine elevators, comprising: a landing door head; a left door panel and a right door panel, the upper ends of which are connected to the landing door head; a landing door frame, the upper end of which is connected to the landing door head via a connecting bracket; and a landing door sill assembly, which has a sliding groove and a horizontal positioning rod. A door guide shoe is connected to the lower ends of the left and right door panels respectively. The horizontal positioning rod passes through the door guide shoe, and the door guide shoe is slidably connected to the sliding groove. This utility model forms a rigid constraint on the left and right door panels through the door guide shoe and the sliding groove, forcing the left and right door panels to slide along a fixed trajectory, preventing left and right offset, swaying, or tilting during opening and closing, ensuring normal use and improving safety. The door guide shoe slides horizontally along the horizontal positioning rod, preventing offset during sliding and increasing stability.

Description

Technical Field

[0001] This utility model relates to a fireproof door, specifically a fireproof door for marine elevators. Background Technology

[0002] Because the regulatory bodies for marine elevators differ from those for ordinary land-based elevators, the certification requirements for fire doors in marine elevators also differ significantly. Currently, most fire doors used in marine elevators are manually hinged. After prolonged use, if the hinge structure malfunctions, such as becoming loose or having damaged parts, and given the ship's tendency to sway at sea, the left and right door panels may shift, sway, or tilt during opening and closing, affecting normal use and posing a certain safety hazard. Utility Model Content

[0003] The present invention aims to provide a fireproof door for marine elevators to solve the above-mentioned technical problems in the prior art.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a fireproof door for marine elevators, characterized in that it comprises:

[0005] Doorway / Entrance Headboard;

[0006] The left and right door panels, as well as the upper ends of the left and right door panels, are connected to the door headers.

[0007] The upper end of the landing door frame is connected to the landing door head via a connecting bracket;

[0008] The landing door sill assembly has a sliding groove and a horizontal positioning rod. The lower ends of the left door panel and the lower ends of the right door panel are respectively connected to a door panel guide shoe. The horizontal positioning rod passes through the door panel guide shoe, and the door panel guide shoe is slidably connected to the sliding groove.

[0009] Preferably, a counterweight assembly is provided on one side of the door frame. The counterweight assembly includes a guide tube and a counterweight, and the counterweight is driven to move up and down inside the guide tube by a traction steel wire rope.

[0010] Preferably, the door header is fixed to a shaft enclosure wall by a fixed bracket.

[0011] Preferably, the upper ends of the left door panel and the right door panel are each connected to the door head of the landing door by a door bolt, and the door bolt is provided with an elongated hole or an adjustable nut structure.

[0012] Preferably, the door sill assembly is fixed to the shaft wall by a sill bracket.

[0013] Preferably, a lever is rotatably connected to the upper end of the left door panel, and a groove is provided on the lever. A locking block is rotatably connected to the top of the door. When the left and right door panels are closed, one end of the locking block is located in the groove.

[0014] Preferably, a maze-like structure with bends is provided between the left and right door panels, between the left door panel and the floor door frame, and between the right door panel and the floor door frame.

[0015] The beneficial effects of this utility model are as follows:

[0016] First, the door panel guide shoe is slidably connected to the sliding track. This track structure rigidly constrains the left and right door panels, forcing them to slide along a fixed trajectory (usually horizontal). This prevents the left and right door panels from shifting, wobbling, or tilting during opening and closing, ensuring normal use and improving safety. Second, the door panel guide shoe slides horizontally along a horizontal positioning rod, preventing it from shifting during sliding. This further prevents the left and right door panels from shifting, wobbling, or tilting during opening and closing, increasing stability.

[0017] Second, this utility model is equipped with a counterweight assembly, which plays a role in balancing the weight of the door panel during the opening and closing process. The balancing weight needs to be adjusted according to the size of the door. When the landing door is opened, the counterweight moves upward in the inner cavity of the guide tube under the traction of the steel wire rope. When the door is closed, the counterweight moves downward under the action of gravity, causing the landing door to close automatically. This makes it convenient to use.

[0018] Third, a lever with a groove is rotatably connected to the upper end of the left door panel. A locking block is rotatably connected to the landing door head. When the left and right door panels are closed, one end of the locking block is located in the groove, thus limiting the left and right door panels and preventing them from opening arbitrarily during elevator operation, thereby improving safety. When the elevator reaches a designated location and the left and right door panels need to be opened, pulling the left and right door panels applies a certain pulling force to the lever, causing the groove to disengage from the locking block, allowing the left and right door panels to be opened normally. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0021] Figure 2 This is a side view of an embodiment of the present invention.

[0022] Figure 3 For along Figure 1 A cross-sectional view along the AA direction.

[0023] Figure 4 for Figure 3 Enlarged diagram of point B.

[0024] Figure 5 for Figure 3 Enlarged diagram of point C. Detailed Implementation

[0025] The following detailed description illustrates the specific implementation method:

[0026] like Figures 1 to 3 As shown, the fireproof door for marine elevators of this utility model includes:

[0027] Doorway 1;

[0028] Left door panel 2 and right door panel 3, the upper ends of left door panel 2 and right door panel 3 are connected to the door header 1;

[0029] The upper end of the door frame 4 is connected to the door head 1 via a connecting bracket 8;

[0030] The landing door sill assembly 5 includes a sliding groove and a horizontal positioning rod 51. A door panel guide shoe 10 is connected to the lower end of the left door panel 2 and the lower end of the right door panel 3, respectively. The horizontal positioning rod 51 passes through the door panel guide shoe 10, which is slidably connected to the sliding groove. This track structure of the sliding groove provides rigid constraint to the left door panel 2 and the right door panel 3, forcing them to slide along a fixed trajectory (usually horizontally). This prevents the left and right door panels 2 and 3 from shifting, wobbling, or tilting during opening and closing, ensuring normal use and improving safety. Furthermore, the door panel guide shoe 10 slides horizontally along the horizontal positioning rod 51, preventing it from shifting during sliding. This further prevents the left and right door panels 2 and 3 from shifting, wobbling, or tilting during opening and closing, increasing stability.

[0031] In practice, a counterweight assembly 6 is provided on one side of the landing door frame 4. The counterweight assembly 6 includes a guide tube 61 and a counterweight 62. The counterweight 62 is driven to move up and down within the guide tube 61 by a traction steel wire rope 63. The counterweight assembly 6 plays a role in balancing the weight of the door panel during the opening and closing process, and the balancing weight needs to be adjusted according to the size of the door opening. When the landing door opens, the counterweight moves upward within the guide tube under the traction steel wire rope; when closing, the counterweight moves downward under the action of gravity, causing the landing door to close automatically, which is convenient to use.

[0032] The landing door header 1 is fixed to a shaft wall via a fixed bracket 7. The landing door header is a key load-bearing component of the elevator landing door, and it must withstand the impact force when the landing door opens and closes, the weight of the door itself, and possible external forces (such as collisions with people). The fixed bracket 7, as an intermediate connector, can evenly transfer the force on the landing door header 1 to the shaft wall (the shaft wall is usually made of concrete or steel structure with strong load-bearing capacity), avoiding loosening or deformation caused by force concentration when the door header is directly fixed.

[0033] Furthermore, the upper ends of the left door panel 2 and the right door panel 3 are each connected to the landing door head 1 via a door bolt 9. The door bolt 9 has an elongated hole or an adjustable nut structure, allowing for fine adjustment of the height (horizontal direction) and verticality (vertical direction) of the left and right door panels during installation by rotating the bolt or adding or removing shims. For example, if the door panels are slightly tilted, the door bolts on the corresponding sides can be adjusted individually to ensure that the gaps between the two doors (left door panel 2 and right door panel 3) are uniform and aligned with the car door when closed, avoiding problems such as door jamming, light leakage, or collisions. In addition, the rigid connection of the door bolts ensures that the door panels do not undergo excessive displacement when subjected to external forces (such as being pushed by people), and at the same time, the shear strength of the door bolts themselves absorbs the impact, reducing the risk of door deformation.

[0034] In this embodiment, the landing door sill assembly 5 is fixed to the hoistway wall by a sill bracket 11. The landing door sill assembly 5 needs to withstand the friction of the sliding door, the impact of people stepping on it, and the lateral force when the car docks. The sill bracket 11 distributes the force to the hoistway wall by fixing it at multiple points (such as setting multiple bracket support points along the length of the sill), so as to avoid the sill from loosening, deforming or breaking due to excessive local force.

[0035] A lever 21 is rotatably connected to the upper end of the left door panel 2. The lever 21 has a groove 22. A locking block 101 is rotatably connected to the landing door head 1. When the left door panel 2 and the right door panel 3 are closed, one end of the locking block 101 is located in the groove 22, thereby limiting the left door panel 2 and the right door panel 3 and preventing them from being opened arbitrarily during elevator operation, thus improving safety. When the elevator reaches a designated location and the left door panel 2 and the right door panel 3 need to be opened, the left door panel 2 and the right door panel 3 are pulled, thereby applying a certain pulling force to the lever 21, causing the groove 22 to disengage from the locking block 101, so that the left door panel 2 and the right door panel 3 can be opened normally.

[0036] like Figure 4 and Figure 5As shown, the left door panel 2, right door panel 3, and door frame 4 are uniformly filled with fire-resistant and heat-insulating material 12, ensuring that the average temperature of the fire door's unexposed side during fire testing does not exceed 140°C above the original temperature, and the temperature at any point, including any joints, does not exceed 180°C above the original temperature, thus meeting the requirements for an A60-class fire door. The fire-resistant and heat-insulating material 12 can be made of inorganic materials such as rock wool, or organic materials such as flame-retardant polyurethane foam.

[0037] like Figure 4 and Figure 5 As shown, there are bends forming a maze structure between the left door panel 2 and the right door panel 3, between the left door panel 2 and the door frame 4, and between the right door panel 3 and the door frame 4. If flames or high-temperature smoke want to pass through this maze structure, they must travel along a winding path (similar to "walking a maze"). Compared with a straight channel, the propagation path length can be increased several times or even more than ten times, which significantly delays the time for the flames to reach the other side, thereby hindering the rapid spread of flames and high-temperature smoke and improving the fire prevention effect.

[0038] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A fireproof door for marine elevators, characterized in that, include: Doorway header (1); The upper ends of the left door panel (2) and the right door panel (3) are connected to the door header (1); The upper end of the door frame (4) is connected to the door head (1) of the door via a connecting bracket (8); The door sill assembly (5) is provided with a sliding groove and a horizontal positioning rod (51). The lower end of the left door panel (2) and the lower end of the right door panel (3) are respectively connected to a door panel guide shoe (10). The horizontal positioning rod (51) passes through the door panel guide shoe (10), and the door panel guide shoe (10) is slidably connected to the sliding groove.

2. The fireproof door for marine elevators according to claim 1, characterized in that, A counterweight assembly (6) is provided on one side of the door frame (4). The counterweight assembly (6) includes a guide tube (61) and a counterweight (62). The counterweight (62) is driven to move up and down inside the guide tube (61) by a traction steel wire rope (63).

3. The fireproof door for marine elevators according to claim 1, characterized in that, The door header (1) is fixed to a shaft wall by a fixed bracket (7).

4. The fireproof partition door for marine elevators according to claim 3, characterized in that, The upper ends of the left door panel (2) and the right door panel (3) are respectively connected to the door head (1) by a door bolt (9). The door bolt (9) is provided with an elongated hole or an adjustable nut structure.

5. The fireproof partition door for marine elevators according to claim 4, characterized in that, The door sill assembly (5) is fixed to the shaft wall by a sill bracket (11).

6. The fireproof partition door for marine elevators according to claim 1, characterized in that, A lever (21) is rotatably connected to the upper end of the left door panel (2), and a groove (22) is provided on the lever (21). A locking block (101) is rotatably connected to the door head (1). When the left door panel (2) and the right door panel (3) are closed, one end of the locking block (101) is located in the groove (22).

7. The fireproof partition door for marine elevators according to claim 1, characterized in that, A maze-like structure with bends is provided between the left door panel (2) and the right door panel (3), between the left door panel (2) and the floor door frame (4), and between the right door panel (3) and the floor door frame (4).

Images