Stainless steel waterproof bearing for unmanned aerial vehicle

Abstract

The utility model discloses a stainless steel waterproof bearing for an unmanned aerial vehicle, which relates to the technical field of bearings, and comprises an outer ring, a rolling body, a retainer and a sealing assembly, and the bearing is only provided with the outer ring without an inner ring; the outer ring is made of a stainless steel material; the rolling body is a stainless steel cylindrical roller and is directly matched with the surface of the mounting shaft for rolling; the retainer is of an integral structure, and pockets matched with the cylindrical rollers are formed in the retainer; the rolling body is a high-precision stainless steel cylindrical roller, and the roller is also made of stainless steel with high corrosion resistance and is subjected to precision machining and a special heat treatment process; pockets used for containing the cylindrical rollers are evenly distributed in the retainer, the shape and the size of the pockets are precisely matched with those of the cylindrical rollers, it is ensured that the cylindrical rollers keep stable intervals and correct motion trails, the retainer is tightly connected with the outer ring in a special installation mode, and the service life of the retainer is prolonged while the structural stability is ensured. And infinitesimal displacement and movement changes of the rolling body under different working conditions can be adapted.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, specifically a kind of stainless steel waterproof bearing for unmanned aerial vehicle. BACKGROUND

[0002] In the face of the rapid development of unmanned aerial vehicle technology, its application scenarios are becoming more and more extensive, covering aerial photography, surveying and mapping, logistics distribution, agricultural plant protection and other fields. Due to the complex and diverse operating environment, unmanned aerial vehicles often face adverse conditions such as rain and high humidity, which puts high demands on the waterproof performance of their core components, bearings.

[0003] Traditional unmanned aerial vehicle bearings, whether they have an inner ring structure or other conventional designs, have many shortcomings in terms of waterproofing. On the one hand, ordinary sealing structures, such as simple rubber sealing rings, are prone to aging, deformation and wear under the conditions of vibration, temperature changes and long-term contact with moisture generated by unmanned aerial vehicle flight, resulting in a significant decline in waterproof performance. Moisture can easily penetrate the interior of the bearing, corrode the bearing components, affect their normal operation, and shorten their service life. On the other hand, some bearings with certain waterproof capabilities have complex structural designs that increase the overall size and weight of the bearings, which contradicts the concept of lightweight and efficient flight for unmanned aerial vehicles and can reduce the flight performance and endurance of unmanned aerial vehicles.

[0004] For some specific unmanned aerial vehicle application scenarios, such as unmanned aerial vehicles that need to be in direct contact with a humid environment or operate in the rain, the waterproofing and structural adaptability problems of traditional bearings are more prominent. In addition, existing bearings, while meeting waterproofing requirements, are difficult to balance good load-carrying capacity and high-speed operation stability. In high-load, high-speed operating conditions, they are prone to failure, affecting the safe and reliable operation of unmanned aerial vehicles. Therefore, developing a bearing that meets the waterproofing needs of unmanned aerial vehicles, adapts to special structural designs, and has high load-carrying capacity and stable operation performance has become a pressing problem in the development of unmanned aerial vehicle technology. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of stainless steel waterproof bearing for unmanned aerial vehicle, in the device, special treatment is carried out to the outer ring and rolling body, so that the adaptability, load-carrying capacity and operation stability of the assembled bearing are greatly improved, the bearing is effectively sealed between the retainer and the outer ring, thereby improving the waterproof performance of the bearing; To solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a kind of unmanned aerial vehicle with stainless steel waterproof bearing, including outer ring, rolling element, retainer and sealing assembly, the bearing is only provided with outer ring without inner ring;The outer ring is made of stainless steel material;The rolling element is stainless steel cylindrical roller, and directly cooperates rolling with installation shaft surface;The retainer is integral structure, and the retainer is provided with pocket hole adapted to cylindrical roller;Effectively guarantee the sealing effect of bearing, avoid the impurities or water of outside to enter into the inside of bearing, influence the use of bearing, to improve the quality and life of bearing in the process of use;

[0008] As a further technical solution of the utility model, the outer ring inner wall two sides are attached and installed with the retainer;The material of the outer ring is 316L stainless steel, and the raceway surface hardness reaches HRC58-62;Ensure that the outer ring has enhanced wear resistance and corrosion resistance during use, to avoid frequent replacement of bearings due to damage;

[0009] As a further technical solution of the utility model, the rolling element is provided with a plurality of, and the spacing between adjacent two rolling elements is same, the material of the rolling element is stainless steel with high corrosion resistance, after precision machining and heat treatment, the hardness reaches HRC60-63, the tensile strength reaches 1500-1800MPa, the cylindricity error is controlled within ±0.001mm, and the surface roughness Ra reaches below 0.05 μm;

[0010] As a further technical solution of the utility model, the width of pocket hole opened on the retainer is same with the diameter of rolling element;Ensure the stability of rolling element during rotation, to avoid shaking condition;

[0011] As a further technical solution of the utility model, the sealing ring is arranged between the retainer and the outer ring, and the sealing ring is embedded between the retainer and the outer ring;The sealing ring effectively ensures the sealing between the retainer and the outer ring, so as to avoid the impurities from outside entering between the retainer and the outer ring during use, affecting the service life of the retainer;

[0012] As a further technical solution of the utility model, the sealing is arranged between the rolling element surface and the outer ring raceway and between the retainer and the rolling element two ends, which effectively ensures the sealing between the components, so as to avoid impurities entering the gap between the two components, thereby affecting the service life of the whole bearing;

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses, in use, the outer ring adopts high -quality stainless steel material to be made, such as 316L stainless steel, it has excellent corrosion resistance, can effectively resist the erosion of moisture, humidity and the chemical substance that can contact, and the raceway surface of outer ring is ground and hardened specially, and the hardness reaches HRC58-62, greatly improved the wear resistance and the fatigue strength of raceway, ensure that raceway can stably support the rolling body under the working condition of high load, high speed, prolong the service life of bearing;

[0015] The utility model discloses, the rolling body selects high -precision stainless steel cylindrical roller, and the material of roller is also stainless steel with high corrosion resistance, and after precision machining and special heat treatment process, its hardness reaches HRC60-63, and the tensile strength reaches 1500-1800MPa;Cylindrical roller is directly rolled with the surface cooperation of mounting shaft under the structure of no inner ring, to ensure good rolling performance and carrying capacity, the cylindricity of roller and surface finish reach very high precision standard, and the cylindricity error is controlled within ±0.001mm, and the surface roughness Ra reaches below 0.05mu m;

[0016] The utility model discloses, the retainer adopts integral structure, is made of engineering plastics with high strength, light weight and good water resistance, and the retainer is evenly distributed with the pocket for accommodating cylindrical roller, and the shape and size of pocket are accurately adapted to cylindrical roller, to ensure that cylindrical roller can keep stable interval and correct movement track when high -speed operation, avoid mutual collision and misplacement;The retainer is closely connected with the outer ring through special mounting mode, can adapt to the slight displacement and movement change of rolling body under different working conditions while guaranteeing the stability of structure. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0018] Figure 2 It is the front view of the utility model Figure 1 .

[0019] Figure 3 It is A-A section view in the utility model Figure 2 .

[0020] Figure 4 It is the split schematic diagram of the utility model Figure 1 .

[0021] In the drawing, 1 is outer ring, 2 is rolling body, 3 is retainer. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] Please refer to Figures 1-4 In the embodiments of the present application, a stainless steel waterproof bearing for unmanned aerial vehicle comprises an outer ring 1, rolling elements 2, a retainer 3 and a sealing assembly, the bearing is only provided with the outer ring without the inner ring; the outer ring 1 is made of stainless steel material; the rolling elements 2 are stainless steel cylindrical rollers, which directly cooperate with the surface of the mounting shaft for rolling; the retainer 3 is of integral structure, and the retainer 3 is provided with pockets adapted to the cylindrical rollers;

[0024] The outer wall of the outer ring 1 is installed in close contact with the retainer 3 on both sides; the material of the outer ring 1 is 316L stainless steel, and the hardness of the raceway surface reaches HRC58-62.

[0025] By adopting the above technical solution, in use, the outer ring is made of high-quality stainless steel material, such as 316L stainless steel, which has excellent corrosion resistance and can effectively resist the corrosion of moisture, humidity and possible chemical substances, the raceway surface of the outer ring is subjected to special grinding and hardening treatment, the hardness reaches HRC58-62, which greatly improves the wear resistance and fatigue strength of the raceway, ensures that the raceway can stably support the rolling elements under high load and high speed working conditions, and prolongs the service life of the bearing;

[0026] In the embodiments, the rolling elements 2 are provided in plurality, and the spacing between the adjacent two rolling elements 2 is the same, the material of the rolling elements 2 is stainless steel with high corrosion resistance, after precision machining and heat treatment, the hardness reaches HRC60-63, the tensile strength reaches 1500-1800MPa, the cylindricity error is controlled within ±0.001mm, and the surface roughness Ra reaches below 0.05μm;

[0027] In the embodiments, the width of the pockets opened on the retainer 3 is the same as the diameter of the rolling elements 2; the material of the retainer 3 is polyether ether ketone added with special water-resistant reinforcing filler; the stability of the rolling elements 2 in the working process is effectively ensured by the opened pockets;

[0028] By adopting the technical scheme, the sealing ring is arranged between the retainer 3 and the outer ring 1, the sealing ring is embedded between the retainer 3 and the outer ring 1, the rolling element is selected as a high-precision stainless steel cylindrical roller, the material of the roller is also stainless steel with high corrosion resistance, the hardness of the roller reaches HRC60-63 through precise machining and special heat treatment process, and the tensile strength reaches 1500-1800MPa; the cylindrical roller is directly matched with the surface of the mounting shaft for rolling in the structure without the inner ring, in order to ensure good rolling performance and bearing capacity, the cylindricality and surface finish of the roller reach very high precision standards, the cylindricality error is controlled to be less than ±0.001mm, and the surface roughness Ra reaches below 0.05μm;

[0029] Furthermore, the sealing is arranged between the surface of the rolling element 2 and the raceway of the outer ring 1 and between the retainer 3 and the rolling element 2 at both ends.

[0030] In the embodiment, the special lubricating coating is coated between the rolling element 2 and the raceway of the outer ring 1 and between the retainer 3 and the rolling element 2 and the contact position of the outer ring 1, the lubricating coating has low friction coefficient, good wear resistance and waterproof performance.

[0031] By adopting the technical scheme, the retainer adopts a whole structure and is made of engineering plastic with high strength, light weight and good waterproof performance, such as polyether ether ketone added with special water-resistant reinforcing filler; the pockets for accommodating the cylindrical rollers are uniformly distributed on the retainer, the shape and size of the pockets are accurately matched with the cylindrical rollers, the cylindrical rollers can keep stable spacing and correct movement track during high-speed operation, and mutual collision and misplacement are avoided; the retainer is tightly connected with the outer ring through a special mounting mode, the structure stability is ensured, and the small displacement and movement change of the rolling element under different working conditions can be adapted.

[0032] The working principle of the utility model is: in use, the outer ring is made of high-quality stainless steel material, such as 316L stainless steel, which has excellent corrosion resistance and can effectively resist the corrosion of moisture, humidity and possible chemical substances, the raceway surface of the outer ring is subjected to special grinding and hardening treatment, the hardness reaches HRC58-62, the wear resistance and fatigue strength of the raceway are greatly improved, the raceway can stably support the rolling element under the working condition of high load and high speed, and the service life of the bearing is prolonged.

[0033] The rolling body selects high-precision stainless steel cylindrical roller, the material of the roller is also stainless steel with high corrosion resistance, after precision machining and special heat treatment process, the hardness reaches HRC60-63, and the tensile strength reaches 1500-1800MPa. The cylindrical roller is directly matched with the surface of the mounting shaft under the structure without the inner ring, in order to ensure good rolling performance and carrying capacity, the cylindricality and surface finish of the roller reach very high precision standards, the cylindricality error is controlled within ±0.001mm, and the surface roughness Ra reaches below 0.05μm;

[0034] The retainer adopts an integral structure and is made of engineering plastic with high strength, light weight and good water resistance, such as polyether ether ketone added with special water-resistant reinforcing filler; The retainer is uniformly distributed with pockets for accommodating cylindrical rollers, the shape and size of the pockets are accurately matched with the cylindrical rollers, so that the cylindrical rollers can maintain stable spacing and correct movement trajectory during high-speed operation, and mutual collision and misplacement are avoided; The retainer is tightly connected with the outer ring through a special mounting mode, which can adapt to the small displacement and movement change of the rolling body under different working conditions while ensuring the stability of the structure.

[0035] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] In addition, it should be understood that although the present application is described in the specification in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A stainless steel waterproof bearing for a drone, characterized by: The bearing is provided with only an outer ring without an inner ring, and comprises the outer ring (1), rolling bodies (2), a retainer (3) and a sealing assembly.

2. The stainless steel waterproof bearing for a drone according to claim 1, characterized in that: The outer ring (1) is made of stainless steel.

3. The stainless steel waterproof bearing for a drone according to claim 1, characterized in that: The rolling bodies (2) are stainless steel cylindrical rollers, and are directly matched with the surface of the mounting shaft for rolling.

4. The stainless steel waterproof bearing for a drone according to claim 3, characterized in that: The retainer (3) is of an integral structure, and is provided with pockets adapted to the cylindrical rollers.

5. The stainless steel waterproof bearing for a drone according to claim 4, characterized in that: The width of the pockets of the retainer (3) is the same as the diameter of the rolling bodies (2).

6. The stainless steel waterproof bearing for a drone according to claim 5, characterized in that: The sealing ring is embedded between the retainer (3) and the outer ring (1). The surface of the rolling bodies (2) and the rolling track of the outer ring (1) and the retainer (3) are sealingly matched.

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