The Oil Spill Analysis and Structure Improvement of Marine Sliding Bearing

2014 ◽  
Vol 541-542 ◽  
pp. 549-552
Author(s):  
Guo Fu Hu ◽  
Shi Ping Yang
Keyword(s):  
Oil Spill ◽  
Reference Value ◽  
Structure Design ◽  
Lubricating Oil ◽  
Motor Shaft ◽  
Sliding Bearings ◽  
Sliding Bearing ◽  
Slide Bearing ◽  
Structure Improvement

In view of the problems serious leakage of lubricating oil in the current slide bearing of a ship motor shaft sealing.This paper analyzed the reasons of bearing oil through the work principle of sliding bearing and the sealing structure. And put forward to solve leakage measures, provide a certain reference value for the seal structure design of sliding bearings and other rotation machine .

A Review of the Research on the Influencing Factors of Lubrication Performance for Sliding Bearings

2021 ◽  
Vol 16 ◽  
Author(s):  
Xiaodong Yu ◽  
Shiwei Zhan ◽  
Dianbin Huang ◽  
Fan Sun ◽  
Fakun Wang ◽  
...  
Keyword(s):  
Influencing Factors ◽  
High Speed ◽  
Sliding Friction ◽  
Working Environment ◽  
Research Progress ◽  
Lubricating Oil ◽  
Stable Operation ◽  
Sliding Bearings ◽  
Sliding Bearing ◽  
Lubrication Performance

Background: Sliding bearing is a kind of bearing that works under sliding friction, which has the characteristics of stable operation, safety and reliability and noiseless. With the technological progress of the machinery industry, modern machinery and equipment is developing in the direction of high speed and heavy load, its power is getting higher and higher, and the working environment is getting worse, so plain bearings are more and more widely used. Objective: In order to improve the lubricating performance of sliding bearings, the influencing factors of lubricating performance of sliding bearings are summarized and commented. Methods: The research progress and achievements at home and abroad are summarized from three aspects: influencing factors of lubrication performance of radial sliding bearings, thrust sliding bearings and influencing factors of lubricating oil on lubrication performance of sliding bearings, which provides reference for the future development of sliding bearings. Results: The study discusses the experimental method, simulation process and experimental results of the factors affecting the lubrication performance of sliding bearing. Conclusion: The texture, deformation, surface morphology of oil cavity, eccentric load and flow state of sliding bearings all affect the lubricating performance of sliding bearings, and lubricating oil also affects the lubricating performance of sliding bearings.

scholarly journals Fluid Characteristics Analysis of the Lubricating Oil Film and the Wear Experiment Investigation of the Sliding Bearing

Coatings ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 67
Author(s):  
Fengming Du ◽  
Changduo Chen ◽  
Kaiguang Zhang
Keyword(s):  
Lubricating Oil ◽  
Sliding Bearings ◽  
Sliding Bearing ◽  
Oil Film ◽  
Cavitation Effect ◽  
Characteristics Analysis ◽  
Key Factor ◽  
Wear Tests ◽  
Fluid Characteristics ◽  
Oil Film Pressure

The sliding bearing is an important component in machines. The characteristics of the oil film fluid of the sliding bearing is the key factor affecting lubrication, which will affect the wear and reliability of the sliding bearing. Herein, the lubricating oil of the sliding bearing is studied, the oil film flow model considering the cavitation effect is established, the pressure and temperature distribution of the oil film under different rotational speeds is explored, and its influence on oil film pressure and temperature are analyzed. Furthermore, wear tests are carried out to measure the wear amount of the bearing bush under different rotational speeds, and the influence of the fluid characteristics of the lubricating oil film on bearing wear is explored. The simulation and experimental study in this paper can provide a reference for the design of sliding bearings.

scholarly journals Design of Lidar System Based on Marine Oil Spill Monitoring

2020 ◽  
Vol 165 ◽  
pp. 03052
Author(s):  
Li Jing ◽  
Che Ying ◽  
Luan Shuang ◽  
Wang Zhaoxin ◽  
Yang Kun
Keyword(s):  
System Design ◽  
Oil Spill ◽  
Oil Pollution ◽  
Structure Design ◽  
Laser Radar ◽  
Light Sources ◽  
Lidar System ◽  
Marine Aquaculture ◽  
Technical Requirements ◽  
Natural Ecology

The occurrence of offshore oil spill will cause great harm to Marine natural ecology and Marine living resources, and seriously affect Marine aquaculture, fishery, tourism and other Marine industries. In the field of monitoring oil spill accident, traditional passive remote sensing measurement is still relying on, and the monitoring of oil spill accident occurring at night is not very good. According to the condition of the surface of the oil spill at night monitoring requirements, design and development of laser radar for monitoring the sea are permeated with oil pollution. This article mainly from the super continuous spectrum of light sources and monochrome laser radar detector selection, spectrometer wavelength calibration, the structure of the optical system design, radar receiving system image quality evaluation, the mechanical structure design and mechanics analysis and prototype design aspects, introduces the first system design of laser radar in detail. The design indexes of lidar system for monitoring oil spill pollution meet the technical requirements.

Research on Design Method of Radiation Field Used for Soft-Base Coat Infrared Drying

2011 ◽  
Vol 347-353 ◽  
pp. 3046-3049
Author(s):  
Xing Jia Liu
Keyword(s):  
Mathematical Model ◽  
Energy Saving ◽  
Radiation Field ◽  
Infrared Radiation ◽  
Design Method ◽  
Reference Value ◽  
Structure Design ◽  
Infrared Heating ◽  
Uniform Temperature ◽  
Infrared Drying

According to the characteristics and difficulties of the soft-base coat drying, the approach of solving the temperature sensitivity through the furnace type structure design as well as the mechanical and electrical chain design is put forward. The form of the infrared radiation field used for soft-base coat drying is determined. By analyzing the characteristics of the infrared heating element and its reflection equipment, a mathematical model of radiation is proposed, and by using of the results and programs obtained from the model, the scientific design method of infrared radiation field is presented. The problem of requirements for uniform temperature of the soft-base coat is solved by infrared radiation field design and movement of belt. By taking the energy saving reconstruction of an infrared blast furnace as an instance, the effectiveness of the proposed method is verified. The design method not only has guiding significance to the design of soft-base coat infrared drying, but also has reference value to other types of infrared heating design for energy saving .

Effect of Machining Precision Caused by NC Gear Hobbing Deformation

2011 ◽  
Vol 86 ◽  
pp. 692-695 ◽  
Author(s):  
Shi Long Wang ◽  
Yong Yang ◽  
Jie Zhou ◽  
Qiang Li ◽  
Shuai Yang ◽  
...  
Keyword(s):  
Large Scale ◽  
Reference Value ◽  
Processing Technique ◽  
Structure Design ◽  
Research Approach ◽  
Machining Error ◽  
Machining Precision ◽  
Design Choice ◽  
Gear Hobbing ◽  
Main Spindle

Research on the effect of main spindle deformation which is caused by hobbing force of gear hobbing machine is an important way to diminish or control the machining tolerance of gear. This paper bases on the structure and technique parameter of some typical large-scale NC gear hobbing machine, and the theory of bend and deformation of beam, a novel equation was proposed in this paper to calculate the hobbing force and deformation by practical hobbing parameter. By calculating and analyzing gear hobbing force and deformation data, we can conclude a change rule between hobbing force and deformation with spindle rotative velocity and hobbing depth. And we can reach a conclusion that we should increase hob rotative velocity and feed in a small hobbing depth in several times, it will diminish cutting force, deformation of hob and workpiece spindle, which will improve the machining precision, efficiency and diminish product scrap ratio. It also prove this research approach has reference value for optimizing gear hobbingmachine structure design, choice of processing technique parameter and machining error prediction and compensation.

Analysis and Models for the Friction Coefficient of a Sliding Bearing

2013 ◽  
Vol 395-396 ◽  
pp. 826-830
Author(s):  
Bao Ming Wang ◽  
Jin Xin Xu ◽  
Fei Zhu ◽  
Zai Xin Wu
Keyword(s):  
Friction Coefficient ◽  
Rotational Speed ◽  
Moving Average ◽  
Grey System Theory ◽  
Grey System ◽  
Sliding Bearings ◽  
Sliding Bearing ◽  
Non Linear ◽  
Grey Relational Grade ◽  
Grey Relational

In this paper, the analyzing and modeling of the friction coefficient in sliding bearing is reported. Based on the grey system theory, the effects of rotational speed and load on the friction coefficient of the sliding bearings are investigated. The grey relational grade is an important parameter to measure the effects of rotational speed and load on friction coefficient of the sliding bearings. The grey relational grade analysis shows that load has an even more significant effect upon the friction coefficient compared with rotational speed. On the basis of analyzing and processing the experimental data, a nonlinear model for friction coefficient of a sliding bearing have been set up by NARMAX Non-Linear Auto-Regressive Moving Average with Exogenous Input. It was found that the NARMAX Non-Linear model has good accuracy and is applicable for the calculation of friction coefficient in sliding bearing.

scholarly journals Research on the Vibration Insulation of High-Speed Train Bogies in Mid and High Frequency

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Jia Liu ◽  
Xuesong Jin
Keyword(s):  
High Frequency ◽  
High Speed ◽  
Structure Design ◽  
High Speed Train ◽  
Bogie Frame ◽  
Explicit Finite Element ◽  
Vibration Transmissibility ◽  
Structure Improvement ◽  
Polygonal Wear ◽  
Stiffness And Damping

According to a large amount of the test data, the mid and high frequency vibrations of high-speed bogies are very notable, especially in the 565~616 Hz range, which are just the passing frequencies corresponding to the 22nd to 24th polygonal wear of the wheel. In order to investigate the main cause of wheel higher-order polygon formation, a 3D flexible model of a Chinese high-speed train bogie is developed using the explicit finite element method. The results show that the couple vibration of bogie and wheelset may lead to the high-order wears of wheel. In order to reduce the coupled resonance of the wheelset and the bogie frame, the effects of the stiffness and damping of the primary suspensions, wheelset axle radius, and bogie frame strength on the vibration transmissibility are discussed carefully. The numerical results show that the resonance peaks in high frequency range can be reduced by reducing the stiffness of axle box rotary arm joint, reducing the wheelset axle radius or strengthening the bogie frame location. The related results may provide a reference for structure improvement of the existing bogies and structure design of the new high-speed bogies.

scholarly journals Anti-wear Mechanism Analysis of Nano-CaCO3 Additives

2018 ◽  
Vol 38 ◽  
pp. 02018 ◽  
Author(s):  
Zhen Xu ◽  
Junfeng Sun
Keyword(s):  
Wear Mechanism ◽  
Piston Ring ◽  
Reference Value ◽  
Wear Test ◽  
Lubricating Oil ◽  
Mechanism Analysis ◽  
Test Device ◽  
Wear Process ◽  
Cylinder Piston ◽  
Lubricating Oil Additive

In this paper, the wear test was carried on with cylinder piston by the wear test device, receiving the results of the piston ring wear and abrasive characteristics by monitoring the wear process, the thesis analysis and put forward the nano-CaCO3 lubricating oil additive anti wear mechanism by the ferrography analysis technology, and provide the technical reference for the relevant measures to reduce wear and the friction, and provide reference value for further study on the related theories of reducing wear and reducing friction.

The Transient Response Analysis for the Damped Free Vibration of Plywood Box

2011 ◽  
Vol 338 ◽  
pp. 513-516 ◽  
Author(s):  
Yi Ding ◽  
Ying Xiang ◽  
Shan Qi Zeng ◽  
Yan Bo Yang
Keyword(s):  
Free Vibration ◽  
Structural Reliability ◽  
Reference Value ◽  
External Pressure ◽  
Structure Design ◽  
Response Analysis ◽  
Element Analysis ◽  
Mass System ◽  
Time Stress ◽  
The Finite Element Analysis

Aiming at the unreasonable phenomenon of the plywood box′ design in the current market, the mechanics research for the structure design of the plywood box was taken. In this paper, a damping spring-mass system for the plywood box is established by using the finite element analysis software ANSYS. In the case of simulated external pressure, analyzed the transient dynamic response, the relation between displacement and time, stress and time were gained in order to verify the structural reliability of the damped free vibration of plywood box during the carriage. Finally, the reliable basis for the design of plywood box was provided, the certain reference value of the standardized and the serialized production for plywood box was provided, as well as the basis of some analysis for the design of cushioning.

THERMAL ANALYSIS OF THE FRICTION PROCESS OF SLIDING BEARINGS USING A STATISTICAL APPROACH

Tribologia ◽  
2016 ◽  
Vol 268 (4) ◽  
pp. 157-165 ◽  
Author(s):  
Dariusz LEPIARCZYK ◽  
Wacław GAWĘDZKI ◽  
Jerzy TARNOWSKI
Keyword(s):  
Dry Friction ◽  
Statistical Approach ◽  
Diagnostic Methods ◽  
Test Results ◽  
Statistical Tools ◽  
Sliding Bearings ◽  
Sliding Bearing ◽  
Friction Process ◽  
Tribological System ◽  
Complex Phenomena

During the friction processes in a sliding bearing complex, phenomena occur that are included amongst the most difficult and complex problems in tribological studies. Therefore, there is a need for a systematic application of modern diagnostic methods and statistical tools to correctly interpret the operating status of the sliding bearing. The use of these tools is designed to ensure proper operational functioning of the tribological system. The paper presents the test results in the form of thermograms and their subsequent processing with the use of statistical tools. The tests were performed on a laboratory stand with the bearing operating in the presence of a lubricant and with the bearing operating in conditions of technical dry friction. FLIR ResearchIR and STATISTICA software were used for the analysis of the temperature distribution. Final remarks contain the conclusions of the research and recommendations for further study.

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