Analysis of Geneva mechanism using dwell symmetrical coupler curve mechanism (original) (raw)

DESIGN AND FABRICATION OF GENEVA OPERATED BELT CONVEYOR

Design & Fabrication of Geneva Operated Belt Conveyor Abstract: The Geneva mechanism is a gear mechanism that translates a continuous rotation into an intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the driven wheel advancing it by one step. The drive wheel also has a raised circular blocking disc that locks the driven wheel in position between steps. Geneva mechanism has many applications such as in watches, projector, etc. But we used Geneva mechanism for converting rotary motion into an intermittent motion in production line. Geneva mechanism can be used in material handling in an industry. The proposed concept will help in production line where many workers are used for the material handling purpose it also reduce the cost and threshing time requirement of more number of worker will be completely eliminated as only two workers can carried out the complete operation. Generally a belt conveyor consists of a motor to drive the rollers and in our project a handle is attached to driving wheel. By using hand we operate the driving wheel.

Kinematic analysis of combined roller-chain and planar mechanisms

Mechanism and Machine Theory, 1992

This paper presents a suggested mechanical system comprising of two sprocket roller-chains (flexible system) in combination with rigid planar links either crank-coupler or drag-link linkage. The paper discusses and analyzes two alternatives in which the roller-chain is driving the rigid links and "'inverse" possibility when the crank of the rigid planar links is the input element and the output motion is taken from the roller-chain. Moreover. replacing the crank of the rigid links by a variable length is discussed, and obtained by considering the coupler as being joined with a point on a drag-link mechanism. The merits of each version are presented and discussed. Of interest, is the unique advantage of obtaining particular output/input velocity ratios v,hich no available mechanism can achieve. Moreover. the obtained results indicate quite a u~ful applicability of the analyzed system in the industrial packing process, motion transmission and. in particular, in conveying machinery. The kinematic analysis procedure is presented in simple fi~rmulation using trigonometric relations. NOMENCLATURE a-Reduced linear acceleration e-Oll'set distance k-Radial distance measured from the original point O [Fig. 7(All L-Coupler or chain portion length O-Original p~)sition or centre of rotatit)n r-Radius or distance belWeen sprocket axles s-~t.inear displacement ~'-Reduced linear velocily xoy-Transformed coordinalc system XO Y-Original or lixed coordinate system

Dynamic force analysis of a six-link planar mechanism

MATEC Web of Conferences

In this paper is studied a vibratory conveyor that is placed on an elastic base. Using the closed contours method it was determined the system that needs to be solved to obtain graphical representation for the generalized coordinates determining the position of the mechanical system elements. The shaking conveyor represents the chase hanged or supported to the fixed section. The chase commits oscillating motions hereupon the cargo which is in the chase, migrates concerning to the chase. The nature of the flow and its parameters are determined by the nature of the oscillating committed by the chase. Installation causes fluctuations fixed tray. Uniformly distributed load on the tray acts in each element of the mechanism. A proper dynamic model has been developed within MSC ADAMS and Maple 18. Simulation tests have been carried out and results are discussed to validate the proposed design solution.

Mechanical analysis of vibratory conveyor mechanism

MATEC Web of Conferences

The paper describes some of the basics of kinematics and dynamics of vibratory conveyor drive. Featured are dynamic modes of material that is being transported. Presented are the optimum material handling, and most rational mode. Introducing the empirical dependence transport speed as a function of angle bending conveyor, amplitude of oscillation of the transport container, the oscillation frequency excitation angle at which operates the actuating force and the coefficient mode of operation of the conveyor. Featured are some of the drive vibratory conveyors, and especially the operation of electromagnetic vibratory conveyor. In this paper is studied a vibratory conveyor that is placed on an elastic base. Using the closed contours method it was determined the system that needs to be solved to obtain graphical representation for the generalized coordinates determining the position of the mechanical system elements. The shaking conveyor represents the chase hanged or supported to the f...

Development of Mini Conveyor Using Genva Mechanisms

International Journal of Scientific Research in Science, Engineering and Technology, 2023

The Development of mini conveyor using Genva Mechanisms described in this project is designed primarily to carry one person according to the specifications of the client. The development of mini conveyor using Genva Mechanisms is moved by an battery powered machine that drives hardened steel traction sheave over which the ropes are suspended. It has advantages is one part travel to another side . They used in all conveyor belt . Geneva mechanism is a method to transform continuous circular motion into intermittent/fixed step circular motion i.e. a circular motion produced in equal intervals of time and resulting in the same displacement. The name “Geneva” is derived from Geneva, Switzserland where in its earliest days the device was used in mechanical watch making. The Geneva drive is also called a Maltese cross mechanism due to their visual similarity. A conveyer belt is basically a linear belt usually made up of rubber or plastic compounds (of high strength) combined with one or more layers of fabrics such as nylon, polyester, neoprene, or nitrile. It has a basic function of transporting material from one point to another. A simple Geneva mechanism consists of a drive wheel (connected to motor) and a driven wheel (connected to belt pulleys ). The drive wheel is a disk with a pin or a shaft near its circumference. The driven wheel consists of several slots. The drive wheel is kept next to the driven wheel in such a way that when the drive wheel is rotated, the pin or shaft fits inside the slot of driven wheel. As it reaches the inner most point of the slot, the pin exerts a force on the driven wheel. As the driven wheel is pivoted from the center, a moments produced which causes the generation of a torque, leading to the rotation of the driven wheel and the pulley attached to it. Hence, there is an intermittent circular motion in them resulting in the movement of the belt. There are several types of Geneva rotator such as external Geneva rotator, internal Geneva rotator and spherical Geneva rotator. The mechanism that I will be using for the conveyer belt is of an External Geneva rotator in which the rotating drive wheel interacts with the driven wheel externally. Keywords : Remote Sensor Network, Wireless Sensor Network Framework, WSN, Microcontroller

Mechanisms kinematic analysis by geometric and computational approach

World Journal of Advanced Engineering Technology and Sciences, 2022

The kinematics of a four-bar mechanism and others extern elements using one developed method is investigated. The basic four bar mechanism is coupled with a sliding element in a straight line and another sliding element guided by a straight line coupled to a rotating connection. The positions, speeds and accelerations are investigated in the full possible cycle. The PC and the Excel spreadsheet are used for the kinematic solution and simulation of the mechanical system. The kinematic analysis is performed considering specified the initial and end angular positions of the input bar, with an established angular increment. The method used allowed to verify the kinematic of the mechanism with precision and also the working simulation and the visualization, making it a viable alternative and allowing the information of the results.

Shape Optimization of Roller Follower Mechanism for Improving Mechanical Efficiency

Cam follower mechanism is an important part of automobile engine that operates the inlet and outlet valve. The follower is in contact with the cam lobe. In this paper, the design of a roller follower has been modified to reduce the contact area of the follower so as to reduce the friction and wear loss of the follower. This in turn helps to improve the mechanical efficiency. The modified shapes are modeled in Solid Works and they have been investigated for modal analysis and static structural analysis using ANSYS 14.5. Different materials are investigated for the modified design in ANSYS which include Stainless Steel, Structural Steel and Chromium Steel, and the results are compared to select the optimal design for the follower.

MODELING, SIMULATION & DYNAMIC ANALYSIS OF FOUR-BAR PLANAR MECHANISMS USING CATIA V5R21

The four-bar linkage is the most basic chain of pin-connected links that allows relative motion between links. Although a simple mechanism, the four-bar linkage Mechanism is very versatile and used in thousands of applications. To study the motion of a four bar mechanism, knowledge of velocity and acceleration analysis is required. The analysis of velocity and acceleration depend upon the graphical as well as analytical methods. The graphical approach is suitable for finding out the velocity and acceleration of the links of a mechanism in one or two positions of the crank. However, if it is required to find these values at various configurations of the mechanism or to find the maximum values of maximum velocity or acceleration, it is not convenient to draw velocity and acceleration diagrams again and again.so that we are approaches to find out velocity and acceleration of four bar mechanism using software. The main themes of this paper are the modelling, computer-aided dynamic force analysis and simulation of four-bar planar mechanisms composed of rigid bodies and massless force and torque producing elements. Modelling of planar four-bar mechanisms will be done by using the CATIAV5R21 software. By this software we can simulate their link at different positions and find the velocity and acceleration graph and compared with analytical equations.

Belt Conveyor Design and Analysis

2014

For handling of partial or continuous goods, belt conveyors are very efficient way. Belt conveyors are used in mining, iron and steel plants, thermal power plants, ore, coal, limestone, sinter transmission, automotive and the other sectors. There are several factors that have to be taken into consideration when a belt conveyor being designed. That means belt conveyor design process requires repetitive strength calculations. But analytical calculations are not capable of determine to entire stresses which occured at whole body. During the design process, time can be saved with the assistance of Finite Element Method. In this study; as a result, it has been seen that, F.E.M is the most practical method which can be utilized during belt conveyor design process.