scholarly journals Analisa Kerusakan Poros Motor Final Drive dan Solusi Pemeliharaan pada Unit Excavator 220 LC

1970 ◽  
Vol 2 (04) ◽  
pp. 15-24
Author(s):  
Veny selviyanty YH
Keyword(s):  
Planetary Gear ◽  
Spline Shaft ◽  
Final Drive

Final drive adalah susunan gigi yang biasanya dalam bentuk satu set roda gigi dan lurus atau satu set gigi planet  (planetary  gear)  sebagai  drive  final  gear  yang  berfungsi  untuk  mengurangi  rotasi  dan meningkatkan torsi satuan. Prinsip kerja final drive bersama-sama dengan prinsip-prinsip transmisi, di mana ada pengurangan kecepatan rotasi dan meningkatkan torsi dengan memanfaatkan perbedaan jumlah gigi pada gigi. Pada saat operasi dan drive gigi spline gigi rusak kerusakan / permukaan (memakai / aus dan deformasi). Tujuan dari penelitian ini adalah untuk menentukan penyebab kerusakan gigi drive dan gigi spline shaft motor final drive 220 LC excavator dan untuk mencegah kerusakan serupa di masa mendatang. Dari data pengujian menyimpulkan bahwa kerusakan pada gigi drive dan gigi spline poros motor akhir perjalanan excavator 220 LC adalah memakai lelah (fatigue memakai) dan kegagalan lelah (kegagalan fatigue) yang disebabkan oleh adanya gaya tekan berulang kali (beban dinamis) dan gesekan rotary menyebabkan beban kelelahan di permukaan.

scholarly journals Pengembangan Program Simulasi Planetary Gear Set Dengan Kombinasi Gear Rasio

2019 ◽  
Vol 9 (2) ◽  
pp. 316
Author(s):  
Asrul Sudiar
Keyword(s):  
Planetary Gear ◽  
Gear Ratio ◽  
Study Program ◽  
Learning And Teaching ◽  
Engineering Software ◽  
Heavy Equipment ◽  
Powertrain System ◽  
Different Types ◽  
Application Engineering ◽  
Final Drive

Various components in a powertrain system can consist of a series of several components that aim to continue the engine rotation from the flywheel to the torque conventer then proceed to the transmission and then to the bevel gear to the final drive, have a variety of different types of technology and of course have advantages and each other's shortcomings. Of the various components, there are several types of components that use a device called the Planetary Gear Set, including the powershift transmission, torque divider and final drive. With the Planetary Gear Set, the rotation of the engine will be able to be doubled in torque as needed when the unit is running and with the combination produced from the Planetary Gear Set it will be possible to create various speed combinations both in the direction of the engine speed and vice versa.This research aims to create and design an application (Engineering Software) to study the workings of the Planetary Gear Set which consists of 3 basic components, namely: Ring Gear, Sun Gear and Planetary Carrier with various interactive gear ratio combinations, which will facilitate students in The Department of Mechanical Engineering in general and the Heavy Equipment Study Program especially in learning the workings of the Planetary Gear Set, so that it is expected to be a tool in the learning and teaching process.Keyword: Planetary Gear Set, Engineering Software.

scholarly journals PENYEBAB KERUSAKAN DAN PERAWATAN FRONT FINAL DRIVE PLANETARY GEAR BACKHOE LOADER CASE 580 SN

2018 ◽  
Vol 8 (1) ◽  
pp. 15
Author(s):  
Muh Aan Anhar
Keyword(s):  
Planetary Gear ◽  
Planet Gear ◽  
Final Drive

Teknologi otomotif khususnya pada alat berat sangat cepat, sehingga hal ini mendorong manusia untuk selalu belajar. Hal ini untuk menjamin kesiapan pemakaian untuk pengerjaan dan juga masih minimnya pengetahuan tentang kerusakan yang sering terjadindan belum mampunya ndalam memperbaiki dan juga merawat. Untuk mengetahui lebih mendalam tentang cara mengatasi kerusakan pada Front Final Drive Planetary Gear. Penelitian ini menggunakan metode observasi kelapangan dengan melakukan pengamatan secara langsung dengan mencari penyebab terjadinya kerusakan dan cara mengatasi kerusakan terhadap komponen Front Final Drive Planetary Gear serta melakukan metode tanya jawab sehingga ditemukan suatu permasalahan yang terjadi pada Front Final Drive Planetary Gear.Kerusakan Front Final Drive Planetary Gear Backhoe Loader Case 580 SN disebabkan kurangnya pelumas Final Drive pada saat dijalankan, dikarenakan O-Ring Final Drive mengalami keausan sehingga pelumas merembes keluar. Akibatnya komponen Planetary Gear mengalami keausan,gesekan yang tinggi sehingga Planet Gear mengalami kerusakan yang menimbulkan suara berisik pada Front Final Drive ketika dijalankan.Komponen Front Final Drive Planetary Gear mengalami kerusakan maka harus diganti dengan yang baru, jika dibiarkan akan menimbulkan suara berisik,roda tidak bisa bergerak jika komponen Planetary Gear ada yang pecah sehingga menggangu operator saat bekerja.Untuk mencegah terjadinya kerusakan dini maka harus dilakukan pemeriksaan harian dan perawatan berkala pada Front Final Drive Planetary Gear yaitu memeriksa kondisi komponen Final Drive Planetary Gear dan mengganti minyak pelumas setiap 1000 jam kerja dan melakukan pemeriksaan harian pada unit yang dioperasikan khususnya pada Front Final Drive untuk mencegah terjadinya kerusakan yang tidak terduga.Kata Kunci : Front Final Drive, Planetary Gear, Backhoe Loader 580 SN

Helicopter main reduction planetary gear fault diagnosis method based on SVDD

2020 ◽  
Vol 64 (1-4) ◽  
pp. 137-145
Author(s):  
Yubin Xia ◽  
Dakai Liang ◽  
Guo Zheng ◽  
Jingling Wang ◽  
Jie Zeng
Keyword(s):  
Fault Diagnosis ◽  
Planetary Gear ◽  
Gaussian Kernel ◽  
Support Vector ◽  
Support Vector Data Description ◽  
Vector Data ◽  
Energy Characteristics ◽  
Gear Fault ◽  
Channel Information ◽  
Diagnosis Method

Aiming at the irregularity of the fault characteristics of the helicopter main reducer planetary gear, a fault diagnosis method based on support vector data description (SVDD) is proposed. The working condition of the helicopter is complex and changeable, and the fault characteristics of the planetary gear also show irregularity with the change of working conditions. It is impossible to diagnose the fault by the regularity of a single fault feature; so a method of SVDD based on Gaussian kernel function is used. By connecting the energy characteristics and fault characteristics of the helicopter main reducer running state signal and performing vector quantization, the planetary gear of the helicopter main reducer is characterized, and simultaneously couple the multi-channel information, which can accurately characterize the operational state of the planetary gear’s state.

Based on ANSYS Planetary Gear Ransmission Design Analysis

2011 ◽  
Vol 314-316 ◽  
pp. 1218-1221
Author(s):  
Hao Min Huang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Contact Stress ◽  
Planetary Gear ◽  
Design Analysis ◽  
Ansys Software ◽  
Element Analysis ◽  
Planet Gear ◽  
Gear Contact ◽  
Transmission Gear

Conventional methods of design to be completed ordinary hydraulic transmission gear gearbox design, but for such a non-planet-rule entity, and the deformation of the planet-gear contact stress will have a great impact on the planet gear, it will be very difficult According to conventional design. In this paper, ANSYS software to the situation finite element analysis, the planetary gear to simulate modeling study.

Planetary gear transmissions load sharing measurement from tooth root strains: Numerical evaluation of mesh phasing influence

2021 ◽  
Vol 163 ◽  
pp. 104370
Author(s):  
J. Sanchez-Espiga ◽  
A. Fernandez-del-Rincon ◽  
M. Iglesias ◽  
F. Viadero
Keyword(s):  
Numerical Evaluation ◽  
Planetary Gear ◽  
Load Sharing ◽  
Tooth Root ◽  
Mesh Phasing

scholarly journals The Structure and Optimal Gear Tooth Profile Design of Two-Speed Transmission for Electric Vehicles

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3736
Author(s):  
Jae-Oh Han ◽  
Won-Hyeong Jeong ◽  
Jong-Seok Lee ◽  
Se-Hoon Oh
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Automobile Industry ◽  
Bending Strength ◽  
Gear Tooth ◽  
Planetary Gear ◽  
Maximum Speed ◽  
Compact Structure ◽  
Simple Method ◽  
Paris Climate Agreement

As environmental regulations have been strengthened worldwide since the Paris Climate Agreement, the automobile industry is shifting its production paradigm to focus on eco-friendly vehicles such as electric vehicles and hydrogen-battery vehicles. Governments are banning fossil fuel vehicles by law and expanding the introduction of green vehicles. The energy efficiency of electric vehicles that use a limited power source called batteries depends on the driving environment. Applying a two-speed transmission to an electric vehicle can optimize average speed and performance efficiency at low speeds, and achieve maximum speed with minimal torque at high speeds. In this study, a two-speed transmission for an electric vehicle has been developed, to be used in a compact electric vehicle. This utilizes a planetary gear of a total of three pairs, made of a single module which was intended to enable two-speed. The ring gear was removed, and the carrier was used in common. When shifting, the energy used for the speed change is small, due to the use of the simple method of fixing the sun gear of each stage. Each gear was designed by calculating bending strength and surface durability, using JGMA standards, to secure stability. The safety factor of the gears used in the transmission is as follows: all gears have been verified for safety with a bending strength of 1.2 or higher and a surface pressure strength of 1.1 or higher. The design validity of the transmission was verified by calculating the gear meshing ratio and the reference efficiency of the gear. The transmission to be developed through the research results of this paper has a simple and compact structure optimized for electric vehicles, and has reduced shift shock. In addition, energy can be used more efficiently, which will help improve fuel economy and increase drive range.

scholarly journals Simulative investigation of ring creep on a planetary bearing of a wind turbine gearbox

2021 ◽  
Author(s):  
Jonas Gnauert ◽  
Felix Schlüter ◽  
Georg Jacobs ◽  
Dennis Bosse ◽  
Stefan Witter
Keyword(s):  
Experimental Data ◽  
Finite Element Method ◽  
Sensitivity Analysis ◽  
Planetary Gear ◽  
The Finite Element Method ◽  
Relative Movement ◽  
Wind Turbine Gearbox ◽  
Interference Fit ◽  
Planetary Gears ◽  
Module Coefficient

AbstractWind turbines (WT) must be further optimized concerning availability and reliability. One of the major reasons of WT downtime is the failure of gearbox bearings. Some of these failures occur, due to the ring creep phenomenon, which is mostly detected in the planetary bearings. The ring creep phenomenon describes a relative movement of the outer ring to the planetary gear. In order to improve the understanding of ring creep, the finite element method (FEM) is used to simulate ring creep in planetary gears. First, a sensitivity analysis is carried out on a small bearing size (NU205), to characterize relevant influence parameters for ring creep—considered parameters are teeth module, coefficient of friction, interference fit and normal tooth forces. Secondly, a full-scale planetary bearing (SL185030) of a 1MW WT is simulated and verified with experimental data.

scholarly journals Dynamic characteristics analysis of planetary gear system with internal and external excitation under turbulent wind load

2021 ◽  
Vol 104 (3) ◽  
pp. 003685042110356
Author(s):  
Hexu Yang ◽  
Xiaopeng Li ◽  
Jinchi Xu ◽  
Zemin Yang ◽  
Renzhen Chen
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Nonlinear Dynamic ◽  
Planetary Gear ◽  
Wind Load ◽  
Transmission System ◽  
Gear Transmission ◽  
Stiffness Ratio ◽  
Gear Transmission System ◽  
Planetary Gear System

According to the working characteristics of a 1.5 MW wind turbine planetary gear system under complex and random wind load, a two-parameter Weibull distribution model is used to describe the distribution of random wind speed, and the time-varying load caused by random wind speed is obtained. The nonlinear dynamic model of planetary gear transmission system is established by using the lumped parameter method, and the relative relations among various components are derived by using Lagrange method. Then, the relative relationship between the components is solved by Runge Kutta method. Considering the influence of random load and stiffness ratio on the planetary gear transmission system, the nonlinear dynamic response of cyclic load and random wind load on the transmission system is analyzed. The analysis results show that the variation of the stiffness ratio makes the planetary gear have abundant nonlinear dynamics behavior and the planetary gear can get rid of chaos and enter into stable periodic motion by changing the stiffness ratio properly on the premise of ensuring transmission efficiency. For the variable pitch wind turbine, the random change of external load increases the instability of the system.

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