Helicopter self-lubricating swash plate

Abstract

The utility model discloses a helicopter self-lubricating swashplate which comprises a swashplate outer ring, a swashplate outer ring bearing is installed inside the swashplate outer ring, a swashplate inner ring is installed inside the swashplate outer ring bearing, and a fisheye bearing is installed inside the swashplate inner ring. A moving ring substrate of the fisheye bearing is of a honeycomb structure, and the honeycomb structure is filled with a graphite nanosheet and tungsten disulfide mixed lubricant. According to the new technology, a swash plate moving ring substrate is of a copper-based material surface structure and a honeycomb structure, and the honeycomb structure is internally pre-filled with a graphite nanosheet and tungsten disulfide mixed lubricant. And the overall shape is a fisheye sphere, so that the lubricating degree and the operating performance can be kept in a high-strength environment of multi-degree-of-freedom composite action.

Description

Technical Field

[0001] This utility model relates to the field of helicopter swashplate technology, and in particular to a self-lubricating helicopter swashplate. Background Technology

[0002] 1. Overall Industry Background:

[0003] The helicopter swashplate is the core mechanical component of the helicopter's flight control system. It is responsible for transmitting the pilot's control commands (via the control stick and collective pitch stick) to the main rotor system, enabling control over the magnitude and direction of lift. Its design directly determines the helicopter's maneuverability, stability, and control precision.

[0004] 2. Current Status of Traditional Technologies:

[0005] As a critical component for controlling helicopters, the swashplate's spherical bearings need to operate stably for extended periods under high-speed rotation, alternating loads, and complex temperature environments. Existing self-lubricating spherical bearings often suffer from lubrication failure due to uneven lubricant distribution, wear particle accumulation, or extreme temperatures, resulting in short service life and poor reliability.

[0006] 3. Defects of traditional technologies:

[0007] A. Traditional spherical plain bearings mostly use a single solid lubrication layer (such as PTFE coating) or grease lubrication, which lacks a dynamic replenishment mechanism. When rotating at high speed, the centrifugal force can easily cause the lubricant to be lost or local dry friction to accelerate wear and increase the delay in edge operation.

[0008] B. Traditional metal-based bearings have poor wear resistance, while pure ceramic bearings are brittle and cannot meet both strength and lubrication requirements. Utility Model Content

[0009] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-lubricating swashplate for helicopters.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A self-lubricating swashplate for helicopters includes an outer ring of the swashplate, an outer ring bearing of the swashplate is installed inside the outer ring of the swashplate, an inner ring of the swashplate is installed inside the outer ring bearing of the swashplate, and a fisheye bearing is installed inside the inner ring of the swashplate.

[0012] The dynamic ring substrate of the fisheye bearing adopts a honeycomb structure, and the interior of the honeycomb structure is filled with a lubricant consisting of graphite nanosheets and tungsten disulfide.

[0013] A further technical solution involves using a copper-based material surface structure for the internal dynamic ring of the fisheye bearing.

[0014] Compared with the prior art, this utility model provides a self-lubricating swashplate for helicopters, which has the following beneficial effects:

[0015] The new technology features a tilting disc rotating ring substrate with a copper-based material surface structure and a honeycomb structure. The honeycomb structure is pre-filled with a lubricant mixture of graphite nanosheets and tungsten disulfide. The overall shape is a fisheye sphere, which enables it to maintain lubrication and operational performance under high-intensity environments with multi-degree-of-freedom compound movements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a self-lubricating swashplate for helicopters proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the honeycomb lubrication structure of the fisheye bearing for a self-lubricating swashplate of a helicopter, as proposed in this utility model.

[0018] In the diagram: 1. Swashplate outer ring; 2. Swashplate outer ring bearing; 3. Swashplate inner ring; 4. Fisheye bearing; 5. Graphite coating. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 scope of protection of the present utility model. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of the present utility model.

[0020] Example 1: Refer to Figure 1 - Figure 2 A self-lubricating swashplate for helicopters includes an outer ring 1 for mounting and fixing the device on a helicopter. An outer ring bearing 2 is installed inside the outer ring 1 to ensure the rotational mounting of an inner ring 3. An inner ring 3 is installed inside the outer ring bearing 2, and a fisheye bearing 4 is installed inside the inner ring 3. The fisheye bearing 4 is mounted on the surface of the rotor shaft to provide support and transmission.

[0021] The moving ring substrate of the fisheye bearing 4 adopts a honeycomb structure, and the lubricant inside the honeycomb structure can provide continuous lubrication during high-speed rotation. The fisheye bearing increases the degree of freedom of rotation. The honeycomb structure is filled with a lubricant consisting of graphite nanosheets and tungsten disulfide.

[0022] A self-lubricating swashplate for helicopters, wherein the inner dynamic ring of the fisheye bearing 4 adopts a copper-based material surface structure, which increases the structural strength and wear resistance of the inner ring.

[0023] Working principle:

[0024] The new technology features a tilting disc rotating ring substrate with a copper-based surface structure and a honeycomb structure. The honeycomb interior is pre-filled with a mixture of graphite nanosheets and tungsten disulfide lubricant. Its overall fisheye spherical shape allows it to maintain lubrication and operational performance even under high-intensity conditions involving multi-degree-of-freedom compound motion.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A self-lubricating swashplate for helicopters, characterized in that, It includes an outer ring of a tilting disk (1), an outer ring bearing (2) of a tilting disk is installed inside the outer ring of the tilting disk (1), an inner ring of a tilting disk (3) is installed inside the outer ring bearing (2), and a fisheye bearing (4) is installed inside the inner ring of the tilting disk (3). The dynamic ring substrate of the fisheye bearing (4) adopts a honeycomb structure, and the interior of the honeycomb structure is filled with a mixture of graphite nanosheets and tungsten disulfide lubricant.

2. The self-lubricating swashplate for helicopters according to claim 1, characterized in that, The internal dynamic ring of the fisheye bearing (4) adopts a copper-based material surface structure.

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