Conveyor cabin door limiting hinge structure

Abstract

The utility model belongs to the technical field of airplane mechanism design, and particularly discloses a conveyor cabin door limiting hinge structure which comprises a first hinge support, a second hinge support and a rotating shaft. The two hinge supports are each composed of a base and an arc-shaped lug piece. Wherein a round hole is formed in the center of the top of an arc-shaped lug of the first hinge support and used for connection and rotation, an embedded design is adopted in the connection position, and a limiting straight section is arranged at the end of the embedded position; a rotating shaft is arranged in the center of the top of the arc-shaped lug of the second hinge support, is inserted into the circular hole in the top of the first hinge support and serves as the rotating center of the second hinge support. By means of the hinge structure, flexible opening of the partition cabin door of the airplane can be achieved, and the hinge has the function of controlling the opening angle of the cabin door. The hinge is simple in structure, the limiting block and the fixed hinge support are combined to reduce installation steps and parts, and space in an airplane is saved.

Description

Technical Field

[0001] The utility model belongs to the field of aviation technical structure design and relates to a transport aircraft cabin door limiting hinge structure. Background Art

[0002] Doors are a crucial component of modern mechanical equipment, opening and closing for personnel access, operation, and maintenance. They are used frequently, placing high demands on operational convenience and aircraft simplicity. Currently, standard hinges on the internal bulkhead doors of certain domestic transport aircraft lack a fixed position, making the door opening angle difficult to control. Excessive opening angles can easily cause interference between the door panel and surrounding equipment and the exterior, necessitating a controlled opening angle. Utility Model Content

[0003] 1. Technical problems solved

[0004] This utility model improves the drawback of existing transport aircraft bulkhead door hinge structures that lack position control. It combines the position limiter with the hinge structure, providing a new position-limiting hinge structure. This structure is simple, low-cost, flexible, and effectively controls the door's opening angle, protecting surrounding equipment.

[0005] 2. Technical solution

[0006] In order to solve the above technical problems, the present invention is realized by the following technical solutions:

[0007] A transport aircraft cabin door limiting hinge structure includes a first hinge support, a second hinge support, and a rotating shaft. The two hinge supports are composed of a base and an arc-shaped ear piece. A circular hole is opened at the center of the top of the arc-shaped ear piece of the first hinge support for connection and rotation. The connection adopts an embedded design, and a limiting straight section is provided at the end of the embedded part. A rotating shaft is provided at the center of the top of the arc-shaped ear piece of the second hinge support. The rotating shaft is inserted into the circular hole at the top of the first hinge support and serves as the rotation center of the second hinge support.

[0008] Furthermore, the ear piece of the second hinge support is designed to be integrated with the rotating shaft.

[0009] Furthermore, mounting holes are arranged on both sides of the ear pieces along the base of the two hinge supports.

[0010] Furthermore, the arc surface of the embedded design at the top connection of the first hinge support is a 1 / 4 arc.

[0011] Furthermore, a straight section is provided at the top of the first hinge support ear, and an arc-shaped structure is adopted at the top of the second hinge support ear.

[0012] Furthermore, the hinge support is made of 45 steel; the rotating hinge support and the rotating shaft are made of 30CrMnSiA.

[0013] Furthermore, the two hinge supports are respectively connected to the door frame and the hatch door to realize the opening and closing and limiting of the hatch door.

[0014] 3. Beneficial technical effects

[0015] 1) The hatch can be opened flexibly, and the hinge can control the opening angle of the hatch.

[0016] 2) The hinge structure is simple, and maintenance and replacement are convenient and reliable.

[0017] 3) The hinge support and limit block are combined into one, eliminating the need for additional limit blocks or door stops (suction), saving space and budget. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model includes 3 drawings, and the drawings and their descriptions are as follows:

[0019] Figure 1 This is a schematic diagram of the installation of the door limit hinge structure;

[0020] Figure 2 This is a structural diagram of a fixed hinge support;

[0021] Figure 3 This is the structural diagram of the rotating hinge support;

[0022] Among them: 1. fixed hinge support, 2. rotating hinge support, 3. rotating shaft. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail with reference to the accompanying drawings and specific embodiments on an aircraft.

[0024] 1) A transport aircraft cabin door limit hinge structure, comprising a fixed hinge support 1, a rotating hinge support 2, and a rotating shaft 3, such as Figure 1 .

[0025] 2) The rotating hinge support 2 and the rotating shaft 3 are welded.

[0026] 3) The fixed hinge support 1 is processed with an embedded concave at the connection, where the processing degree of angle α directly controls the opening and closing angle of the hatch. In the specific implementation process, the example angle α is 90°, and the hatch opening angle is also 90°. Figure 2 、 3 .

[0027] 4) The fixed hinge support 1 and the rotating hinge support 2 are ear-type, the connection is arc-shaped, and a hole is opened at the center of the arc.

[0028] 5) The rotating shaft 3 is cylindrical.

[0029] 6) The fixed hinge support 1 is screwed to the door frame, and the rotating hinge support 2 is screwed to the door. The rotating hinge support 2 is hinged to the fixed hinge support 1 via a rotating shaft 3 and secured by its own weight. During the door opening process, the rotating hinge support 2 rotates around the rotating shaft 3 along with the door to open the door. When the door is opened to the specified angle, the rotating hinge support 2 contacts the fixed hinge support 1 at the inner angle α, limiting the further increase in the door opening angle. In the specific design structure, the rotating hinge support's rotating shaft and ear piece are manufactured as one piece. The two hinge supports are installed in a plug-in manner, allowing for reliable assembly relying solely on the door's own weight. The rotating hinge support has a built-in limit function.

[0030] Finally, it should be noted that the above implementation methods or implementation cases are only used to illustrate the technical solutions of the present invention, and any parts that are not detailed are regarded as conventional technical means or common knowledge in the field; it should be understood that the protection scope of the present invention is not limited to the above specific implementation forms, and any technician familiar with the field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should all be covered by the protection scope of the present invention.

Claims

1. A transport aircraft cabin door limiting hinge structure, characterized in that: It includes a first hinge support, a second hinge support, and a rotating shaft; both hinge supports are composed of a base and an arc-shaped ear piece; wherein, a circular hole is opened at the center of the top of the arc-shaped ear piece of the first hinge support for connection and rotation, the connection adopts an embedded design, and a limiting straight section is provided at the end of the embedded part; a rotating shaft is provided at the center of the top of the arc-shaped ear piece of the second hinge support, and the rotating shaft is inserted into the circular hole at the top of the first hinge support and serves as the rotation center of the second hinge support.

2. A transport aircraft cabin door limiting hinge structure according to claim 1, characterized in that: The ear piece of the second hinge support is designed to be integrated with the rotating shaft.

3. The transport aircraft cabin door limiting hinge structure according to claim 1, characterized in that: Mounting holes are arranged on both sides of the ear pieces along the base of the two hinge supports.

4. The transport aircraft cabin door limiting hinge structure according to claim 1, characterized in that: The arc surface of the embedded design at the top connection of the first hinge support is a 1 / 4 arc.

5. The transport aircraft cabin door limiting hinge structure according to claim 1, characterized in that: The top of the first hinge support ear is provided with a straight section, and the top of the second hinge support ear adopts an arc-shaped structure.

6. A transport aircraft cabin door limiting hinge structure according to claim 5, characterized in that: The first hinge support is fixed on the door frame, and the second hinge support is fixed on the cabin door.

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