Detachable gravity sliding self-closing door

Abstract

The utility model discloses a detachable gravity sliding self-closing door which comprises a door frame and door columns, the door frame is installed between the two door columns, an upper supporting plate and a lower supporting plate are fixed to the door column on one side, a top connecting plate is rotatably connected to the upper supporting plate through a pin shaft, and a bottom connecting plate is rotatably connected to the lower supporting plate through a pin shaft. An inclined rotating rod is arranged on one side of the door frame, and the rotating rod is mounted between the top connecting plate and the bottom connecting plate; the door frame is a non-planar torsion door frame; and a door opening limiting stop block is arranged on the door post provided with the rotating rod. The gravity self-closing door is achieved by twisting the door frame, the convenience and safety of the maintenance structure are achieved, the cost of a traditional hinge and the hinge welding operation are saved, the benefit of saving the cost is achieved, the failure of a traditional hinge spring is avoided, the safety and reliability of the traditional hinge spring are improved, and the convenience of later maintenance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of platform structure safety protection, and particularly relates to a detachable gravity-sliding self-closing door. Background Art

[0002] In the maintenance structure of equipment platforms, safety doors are important components. However, with the changes in production methods and requirements, we found that traditional safety doors can only achieve the self-closing function through hinges, and basically all hinges are fixed by welding. Moreover, since most maintenance structures are in outdoor environments, as a key component for the opening and closing of safety doors, once the hinges are welded and fixed, their positions are difficult to adjust, and the welding points are vulnerable to environmental erosion (such as rain, dust, chemical gases, etc.), resulting in weld cracking or hinge loosening, thus affecting the stability and durability of the safety doors. In outdoor environments, the hinges and other metal components of safety doors are exposed to harsh climatic conditions for a long time, and are vulnerable to corrosion and wear. Especially in areas with high humidity, strong winds, and large temperature changes, these problems are particularly serious, shortening the service life of safety doors.

[0003] The self-closing function achieved by relying on hinges may fail due to hinge wear or corrosion, resulting in the inability of the safety door to effectively close automatically. This may prevent personnel from quickly evacuating or isolating dangerous areas in case of emergencies, increasing safety risks. Loose or damaged hinges also affect the overall stability of the safety door, making it easy to shake or deform under the action of wind pressure or other external forces, and may even fall off, posing a direct threat to personnel and equipment.

[0004] Since the hinges and other components are vulnerable to environmental erosion and damage, regular maintenance and replacement are required, increasing the maintenance cost and workload. In severe cases, it may be necessary to replace the entire safety door, which is not only costly but also may lead to an extended downtime of the equipment platform, affecting production efficiency. Summary of the Invention

[0005] The purpose of the utility model is to provide a detachable gravity-sliding self-closing door to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A detachable gravity-sliding self-closing door, including a door frame and door posts. The door frame is installed between the two door posts. An upper support plate and a lower support plate are fixed on one of the door posts. A top connecting plate is rotatably connected to the upper support plate through a pin shaft, and a bottom connecting plate is rotatably connected to the lower support plate through a pin shaft. An inclined rotating rod is provided on one side of the door frame, and the rotating rod is installed between the top connecting plate and the bottom connecting plate;

[0007] The door frame is a non-planar torsion door frame;

[0008] An opening limit stopper is provided on the doorpost where the rotating rod is installed.

[0009] Preferably, the door frame includes side frames, a rotating rod, and an upper frame, a reinforcing cross bar, and a lower frame that are fixedly connected in sequence from top to bottom between the side frames and the rotating rod.

[0010] Preferably, the length of the upper frame < the length of the reinforcing cross bar < the length of the lower frame.

[0011] Preferably, polytetrafluoroethylene plates are installed between the top connecting plate and the upper supporting plate, and between the lower supporting plate and the bottom connecting plate.

[0012] Preferably, the upper frame and the lower frame are arranged asymmetrically in the vertical plane to form a non-coplanar structure.

[0013] Preferably, the outer end of the reinforcing cross bar is connected with a closing limit stopper, and a rubber buffer layer is wrapped outside the closing limit stopper.

[0014] The technical effects and advantages of the present utility model:

[0015] 1. With this structure, by utilizing gravity and the inclined rotating rod, the door can automatically slide and close after being opened to a certain angle without the need for an additional power device, achieving a convenient automatic closing function. The entire door structure adopts a detachable design, facilitating maintenance and component replacement when needed, saving the cost of traditional hinges and hinge welding operations, avoiding the failure of traditional hinge springs, increasing its safety and reliability, and allowing for disassembly and maintenance through split pins, improving the convenience of later maintenance.

[0016] 2. The door frame adopts a non-planar torsion design, making the door frame more stable when bearing the impact force during closing, extending its service life. At the same time, the non-coplanar structure enhances the overall strength of the door frame and prevents deformation.

[0017] 3. Polytetrafluoroethylene plates are installed between the connecting plate and the supporting plate. This material has good self-lubricity and wear resistance, reducing friction and wear between components, and also playing a buffering role to protect the door frame and connecting components.

[0018] 4. The maximum opening angle of the door is effectively limited by the provided opening limit stopper, preventing the door from being damaged or causing safety hazards due to excessive opening. Especially, the rubber buffer layer wrapped outside the opening limit stopper further enhances safety and avoids noise and impact force during closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is Figure 1Schematic diagram in the A direction;

[0021] Figures 3 - 4 Assembly schematic diagram of the upper and lower ends of the rotating rod;

[0022] Figure 5 Assembly schematic diagram of the top connecting plate and the upper supporting plate;

[0023] Figure 6 Assembly schematic diagram of the lower supporting plate and the bottom connecting plate.

[0024] In the figure: door post - 1, door opening limit stopper - 2, door closing limit stopper - 3, 4 door frames, rotating rod - 5, strengthening cross bar - 6, top connecting plate - 7, lower supporting plate - 8, upper supporting plate - 9, bottom connecting plate - 10, polytetrafluoroethylene plate - 11, pin shaft - 12, side frame - 41, upper frame - 42, lower frame - 43. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] As Figures 1 - 6 shows a specific implementation mode of a detachable gravity - sliding self - closing door of the present invention: including a door frame 4 and a door post 1, the door frame 4 is installed between the two door posts 1, an upper supporting plate 9 and a lower supporting plate 8 are fixed on one of the door posts 1, a top connecting plate 7 is rotatably connected to the upper supporting plate 9 through a pin shaft 12, a bottom connecting plate 10 is rotatably connected to the lower supporting plate 8 through a pin shaft 12, an inclined rotating rod 5 is arranged on one side of the door frame, and the rotating rod 5 is installed between the top connecting plate 7 and the bottom connecting plate 10;

[0027] The door frame 4 is a non - planar torsion door frame;

[0028] A door opening limit stopper 2 is arranged on the door post 1 where the rotating rod 5 is installed.

[0029] Preferably, the door frame 4 includes a side frame 41, a rotating rod 5, and an upper frame 42, a strengthening cross bar 6, and a lower frame 43 which are fixedly connected in sequence from top to bottom between the side frame 41 and the rotating rod 5.

[0030] Preferably, the length of the upper frame 42 < the length of the strengthening cross bar 6 < the length of the lower frame 43.

[0031] Preferably, polytetrafluoroethylene plates 11 are installed between the top connecting plate 7 and the upper support plate 9, and between the lower support plate 8 and the bottom connecting plate 10.

[0032] Preferably, the upper frame 42 and the lower frame 43 are arranged asymmetrically in the vertical plane to form a non-coplanar structure.

[0033] Preferably, a door closing limiting block 3 is connected to the outer end of the reinforcing cross bar 6, and a rubber buffer layer is wrapped outside the door closing limiting block 3.

[0034] The applicant further declares that the present utility model uses the above embodiments to illustrate the implementation method and device structure of the present utility model, but the present utility model is not limited to the above embodiments, that is, it does not mean that the present utility model must rely on the above methods and structures to be implemented. Those skilled in the art should understand that any improvement to the present utility model, equivalent replacement of the implementation method selected by the present utility model, addition of steps, selection of specific methods, etc., all fall within the protection scope and the disclosed scope of the present utility model.

[0035] The present utility model is not limited to the above embodiments, and all ways of adopting a structure and method similar to the present utility model to achieve the purpose of the present utility model are within the protection scope of the present utility model.

Claims

1. A detachable gravity sliding self-closing door, comprising a door frame (4) and a door post (1), wherein the door frame (4) is arranged between two door posts (1), characterized in that: An upper support plate (9) and a lower support plate (8) are fixed to the door column (1) on one side; a top connecting plate (7) is rotatably connected to the upper support plate (9) via a pin shaft (12); a bottom connecting plate (10) is rotatably connected to the lower support plate (8) via a pin shaft (12); an inclined rotating rod (5) is provided on one side of the door frame; the rotating rod (5) is installed between the top connecting plate (7) and the bottom connecting plate (10); The door frame (4) is a non-planar torsion door frame; A door opening limiting block (2) is provided on the door post (1) on which the rotating rod (5) is installed.

2. The detachable gravity sliding self-closing door according to claim 1, characterized in that: The door frame (4) comprises a side frame (41), a rotating rod (5), and an upper frame (42), a reinforcing cross bar (6), and a lower frame (43) which are fixedly connected between the side frame (41) and the rotating rod (5) in order from top to bottom.

3. The detachable gravity sliding self-closing door according to claim 2, characterized in that: The length of the upper frame (42) is less than the length of the reinforcing cross bar (6) and less than the length of the lower frame (43).

4. The detachable gravity sliding self-closing door according to claim 1, characterized in that: A polytetrafluoroethylene plate (11) is installed between the top connecting plate (7) and the upper supporting plate (9), and between the lower supporting plate (8) and the bottom connecting plate (10).

5. The detachable gravity sliding self-closing door according to claim 3, characterized in that: The upper frame (42) and the lower frame (43) are arranged asymmetrically in a vertical plane to form a non-coplanar structure.

6. The detachable gravity sliding self-closing door according to claim 2, characterized in that: The outer end of the reinforcing cross bar (6) is connected to the door closing limiting block (3), and a rubber buffer layer is wrapped around the door closing limiting block (3).

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