Marine midship split fire door

Abstract

The utility model discloses a ship -borne middle -split open -type fireproof door, include: floor door head, floor door sill is fixed on the shaft enclosure wall through the sill support, be provided with left door panel, right door panel between floor door sill, floor door head, be provided with first gap on left door panel end face, be provided with the second gap of shape matching first gap on right door panel end face, floor door frame is personally experienced sth, includes the first stand, second stand of symmetrical arrangement in floor door head both ends, and the first stand is fixedly installed in floor door head end portion through door frame connecting support, and first stand one side is provided with first side bending edge, and the second side bending edge of position corresponding first side bending edge is provided with on right door panel, when the left door panel, right door panel between opposite movement closes, first side bending edge and second side bending edge lock together. Compared with prior art, the utility model solves the problem that the fire -resistant ability of the fire door of the existing land elevator can not satisfy the demand of the ship.

Description

Technical Field

[0001] This utility model relates to the field of marine elevator technology, and in particular to a marine center-opening fireproof door. Background Technology

[0002] The regulatory bodies for marine elevators differ from those for ordinary land-based elevators, and the certification requirements for fire doors also differ significantly. Currently, most fire doors used in elevators do not consider the rolling, pitching, and heaving conditions of ships, nor do they address the corrosive effects of high-smoke environments. Their opening and closing protection rating is only IP21, and the door panels are made using spot welding, which makes them prone to deformation under dynamic loads. Furthermore, A0 and A60 doors typically cannot be used interchangeably with center-spring doors, resulting in poor stability in marine environments and frequent instances of doors failing to close automatically.

[0003] For these reasons, existing fire doors cannot be directly applied to ships. Land-based fire doors operate in stable, static environments, while marine fire doors not only experience dynamic loads but also face strong wind pressure in areas such as generator rooms, resulting in different operating conditions. Utility Model Content

[0004] The purpose of this utility model is to provide a shipboard center-opening fireproof door to solve the problem that the fireproof capability of existing land-based elevator fireproof doors cannot meet the requirements of marine applications.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a marine center-opening fireproof door, comprising:

[0006] The landing door head is fixedly installed on the shaft wall by a door head fixing bracket. The landing door head includes a door guide rail and a door frame beam, and the door guide rail is fixedly installed on the door frame beam.

[0007] The floor sill is fixed to the shaft wall by a sill bracket. A left door panel and a right door panel are provided between the floor sill and the floor door head. A first notch is provided on the end face of the left door panel, and a second notch with a matching shape is provided on the end face of the right door panel.

[0008] The landing door frame includes a first column and a second column symmetrically arranged at both ends of the landing door head. The first column is fixedly installed at the end of the landing door head through a door frame connecting bracket. A first side bend is provided on one side of the first column, and a second side bend is provided on the right door panel, which is positioned corresponding to the first side bend. When the left door panel and the right door panel move towards each other and close, the first side bend and the second side bend are engaged.

[0009] The right door panel has a first upper bend edge at the top, which bends outward to form a U-shaped groove. The door frame beam has a first lower bend edge at the bottom, with the top of the lower bend edge extending into the U-shaped groove.

[0010] As a further description of the above technical solution:

[0011] Two parallel first door bolts are provided on the upper part of the left door panel. The door bracket is fixedly installed on the top of the first door bolts. The door roller is rotatably installed on the door bracket and suspended inside the door guide rail.

[0012] As a further description of the above technical solution:

[0013] Two parallel first door panel guide shoes are provided at the lower end of the left door panel, and the first door panel guide shoes are slidably connected to the landing door sill.

[0014] As a further description of the above technical solution:

[0015] The guide shoe position of the first door panel corresponds to the first door bolt.

[0016] As a further description of the above technical solution:

[0017] A door counterweight guide is provided on the back of the right door panel. A counterweight is installed inside the door counterweight guide. One end of the counterweight is fixedly connected to a steel wire rope. The steel wire rope passes around the guide wheel and is fixedly installed on the left door panel. The guide wheel is rotated and installed on the right door panel.

[0018] As a further description of the above technical solution:

[0019] The door guide rail is a profile guide rail.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, in order to meet the fire protection requirements of ships, when the ship's center-opening fire door is closed, the left door panel end face and the right door panel end face are joined together by the first notch and the second notch to form a maze structure. The left door panel, the right door panel and the door frame beam form a maze structure, and the left door panel, the right door panel and the door frame form a maze structure. The multiple maze structures effectively improve the sealing effect when the fire door is closed, and achieve the effect of preventing smoke and flames from passing through within 60 minutes.

[0022] 2. This utility model addresses the fire protection requirements of ship elevator landing doors, meeting the fire protection level requirements for different partitioned areas of the elevator on board, and while meeting the relevant fire protection requirements for ship equipment, it can safely and reliably meet the requirements for opening and closing elevator doors. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the front view structure of a shipboard center-opening fire door.

[0025] Figure 2 for Figure 1 A sectional view along the AA direction.

[0026] Figure 3 for Figure 2 A magnified view of a section at point B in the middle.

[0027] Figure 4 for Figure 2 A magnified view of a section at point C.

[0028] Figure 5 This is a side view structural diagram of a shipboard center-opening fire door.

[0029] Figure 6 for Figure 5 A magnified view of a section at point D.

[0030] Figure 7 This is a side view structural diagram of the crossbeam of the door frame in a marine center-opening fire door.

[0031] Legend:

[0032] 1. Landing door head; 11. Door frame beam; 111. First lower bend edge; 2. Left door panel; 21. First notch; 3. Right door panel; 31. Second side bend edge; 32. First upper bend edge; 4. Landing door frame; 41. First column; 411. First side bend edge; 5. Landing door sill; 51. Sill bracket; 6. Landing door counterweight guide tube; 61. Steel wire rope; 62. Guide wheel; 7. Door head fixing bracket; 8. Door frame connecting bracket; 9. First hanging bolt; 10. First door panel guide shoe. Detailed Implementation

[0033] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] Please see Figure 1-7 This utility model provides a technical solution: a marine center-opening fireproof door, comprising:

[0036] The landing door head 1 is fixedly installed on the shaft wall by the door head fixing bracket 7. The landing door head 1 includes a door guide rail and a door frame beam 11. The door guide rail is fixedly installed on the door frame beam 11.

[0037] A floor sill 5 is fixed to the shaft wall by a sill bracket 51. A left door panel 2 and a right door panel 3 are provided between the floor sill 5 and the floor door head 1. A first notch 21 is provided on the end face of the left door panel 2, and a second notch with a matching shape to the first notch 21 is provided on the end face of the right door panel 3.

[0038] The landing door frame 4 includes a first column 41 and a second column symmetrically arranged at both ends of the landing door head 1. The first column 41 is fixedly installed at the end of the landing door head 1 through a door frame connecting bracket 8. The door frame connecting bracket 8 is fixed to the first column 41 and the landing door head 1 respectively, without affecting the sliding of the left door panel 2 and the right door panel 3. A first side bend 411 is provided on one side of the first column 41, and a second side bend 31 corresponding to the first side bend 411 is provided on the right door panel 3. When the left door panel 2 and the right door panel 3 move towards each other and close, the first side bend 411 and the second side bend 31 are engaged. A maze structure is formed between the right door panel 3 and the first column in the landing door frame 4. Similarly, a maze structure is formed between the left door panel 2 and the second column in the landing door frame 4.

[0039] The right door panel 3 has a first upper bend edge 32 at the top, which bends outward to form a U-shaped groove. The door frame beam 11 has a first lower bend edge 111 at the bottom, with the top of the lower bend edge 111 extending into the U-shaped groove. A maze structure is formed between the right door panel 3 and the door frame beam 11. Similarly, a maze structure is formed between the left door panel 2 and the door frame beam 11.

[0040] Marine center-opening fire doors use switches with an IP56 protection rating, improving the IP protection level of the switches.

[0041] Left door panel 2 and right door panel 3 are coated with a high-corrosion-resistant paint, and the door panel bodies are encased in stainless steel decorative panels to improve the corrosion resistance of the fire door and address the issue of high smoke levels. During the welding process of left door panel 2 and right door panel 3, intermittent welding with reinforcing ribs is used, with each weld segment being 10mm, and continuous welding at the end caps, with a weld of 10mm, to improve welding quality. To address the incompatibility between A0 and A60 sizes, the thickness of the door panels is standardized, and the power of the door operator is increased, allowing A0 and A60 sizes to be used interchangeably, thereby expanding the scope of application.

[0042] Marine center-opening fireproof doors address the fire protection requirements of marine elevator landing doors, corresponding to a fire rating of A0. This satisfies the fire protection requirements for different partitioned areas of the elevator on board, and while meeting the relevant fire protection requirements for marine equipment, it can safely and reliably meet the requirements for opening and closing elevator doors.

[0043] The door guide rail is a profile guide rail. Compared to the bent sheet metal guide rails used in fire doors of land-based elevators, the one-piece molded profile guide rail is used, which has high strength, is not easily deformed, and effectively copes with the dynamic loads generated by the rolling, pitching, and heaving of ships.

[0044] Working principle: In order to meet the fire protection requirements of ships, when the ship's center-opening fire door is closed, the left door panel 2 end face and the right door panel 3 end face are joined together by the first notch 21 and the second notch to form a maze structure. The left door panel 2, the right door panel 3 and the door frame beam 11 form a maze structure, and the left door panel 2, the right door panel 3 and the door frame 4 form a maze structure. The multiple maze structures effectively improve the airtightness of the fire door when it is closed, and achieve the effect of preventing smoke and flames from passing through within 60 minutes.

[0045] Example 2

[0046] Based on the above embodiments, this embodiment further improves upon the following technical solution: two parallel first door bolts 9 are provided on the upper end of the left door panel 2, the door support is fixedly installed on the top of the first door bolts 9, the door roller is rotatably installed on the door support, and the door roller is suspended in the door guide rail, so that the top of the left door panel 2 achieves a sliding connection with the door head 1.

[0047] Two parallel first door panel guide shoes 10 are provided at the lower end of the left door panel 2. The first door panel guide shoes 10 are slidably connected to the landing door sill 5, so that the bottom of the left door panel 2 is slidably connected to the landing door sill 5. The first door panel guide shoes 10 are slidably connected in the groove on the landing door sill 5. The first door panel guide shoes 10 are preferably eccentric guide shoes to increase stability, so that the door can be used normally in swaying and heaving environments.

[0048] Preferably, the first door panel guide shoe 10 is positioned to correspond to the first door bolt 9, further improving the smoothness of the left door panel 2 sliding.

[0049] The sliding connection structure between the right door panel 3 and the landing door head 1 and the landing door sill 5 is the same as the sliding connection structure between the left door panel 2 and the landing door head 1 and the landing door sill 5.

[0050] Example 3

[0051] Based on the above embodiments, the following improved technical solutions are further made in this embodiment: a door counterweight guide 6 is provided on the back of the right door panel 3, a counterweight is provided in the door counterweight guide 6, one end of the counterweight is fixedly connected to a steel wire rope 61, the steel wire rope 61 passes around the guide wheel 62 and is fixedly installed on the left door panel 2, the left door panel 2 is an active door, and the guide wheel 62 is rotatably installed on the right door panel 3.

[0052] The door counterweight guide 6 is fixedly installed on the back of the right door panel 3 to restrict the sliding direction of the internal counterweight. For the spring-type fire doors of land-based elevators, which have poor stability and self-closing performance, this application effectively ensures the stable operation and closing quality of the fire door by changing to a counterweight-type fire door and increasing the weight of the counterweight.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A marine center-opening fire door, characterized in that, include: The landing door head is fixedly installed on the shaft enclosure wall by a door head fixing bracket. The landing door head includes a door guide rail and a door frame beam, and the door guide rail is fixedly installed on the door frame beam. A floor threshold is fixed to the shaft wall by a threshold bracket. A left door panel and a right door panel are provided between the floor threshold and the floor door head. A first notch is provided on the end face of the left door panel, and a second notch with a shape matching the first notch is provided on the end face of the right door panel. The landing door frame includes a first column and a second column symmetrically arranged at both ends of the landing door head. The first column is fixedly installed at the end of the landing door head through a door frame connecting bracket. A first side bend is provided on one side of the first column, and a second side bend is provided on the right door panel, which is positioned corresponding to the first side bend. When the left door panel and the right door panel move towards each other and close, the first side bend and the second side bend are engaged. The right door panel has a first upper bend edge at the top, which bends outward to form a U-shaped groove. The door frame beam has a first lower bend edge at the bottom, with the top of the lower bend edge extending into the U-shaped groove.

2. A marine center-opening fire door according to claim 1, characterized in that, The upper part of the left door panel is provided with two parallel first door bolts. The door bracket is fixedly installed on the top of the first door bolts. The door roller is rotatably installed on the door bracket and suspended in the door guide rail.

3. A marine center-opening fireproof door according to claim 2, characterized in that, The lower end of the left door panel is provided with two parallel first door panel guide shoes, which are slidably connected to the door sill.

4. A marine center-opening fireproof door according to claim 3, characterized in that, The position of the first door panel guide shoe corresponds to the first door bolt.

5. A marine center-opening fire door according to claim 1, characterized in that, A door counterweight guide tube is provided on the back of the right door panel, and a counterweight is provided inside the door counterweight guide tube. One end of the counterweight is fixedly connected to a steel wire rope. The steel wire rope is fixedly installed on the left door panel after passing around the guide wheel, and the guide wheel is rotatably installed on the right door panel.

6. A marine center-opening fire door according to claim 1, characterized in that, The door guide rail is a profile guide rail.

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