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Selection of V-belt for Power Transmission in Agricultural Machinery

M. M. Billah
Department of Computer Science & Mathematics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. S. Hossain
Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. R. Islam
Department of CSE, Manarat International University, Dhaka, Bangladesh

M. A. Rahman
Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The solution of a v-belt design problem depends upon many data tables, figures, equations and sequence of calculations. To solve such a problem a computer program is developed which facilitates the design procedure by fast computation with less drudgery and more accuracy. Computed result shows the diameter of smaller and larger sheave, center distance, belt length, belt number, required number of belt, belt cross-section, as output after calculation. The computer-generated output by using this program is found more accurate and efficient than the conventional calculation method.

Keywords: V-belt selection, Computer program, Agricultural machinery

Location: Department of Computer Science & Mathematics, Bangladesh Agricultural University, Mymensingh, Bangladesh

Start Date:

End Date:

Program Area: Farm Mechanization

Commodity: Performance evaluation

Objectives:

a. To reduce drudgery, time and for accuracy a computer program is developed and

b. To select V-belt with precision and accurate calculation.

Methodology:

In design of this computer program, the first priority was to provide an easily understandable hassle free user interface. As most computers are running on windows operating system (OS), for better compatibility visual basic programming language was chosen. To store several data table an MS Access Database file was used as the backhand database in this program. The main program connects with this access database through Microsoft Jet 4.0 DB provider. As the compiler and all the components of this program are from same vendor, it works very smoothly on any window based PC. Service factor (Nsf) has been determined from the table coded in the program for machine type (driven machine and driving machine). In this program driven machine and driving machine are two inputs and are selected from two different combo box lists, and mathematical equation were used for operational conditions. Design horsepower has been calculated by the equation – Design hp = Nsf × transmitted hp. The case where transmitted hp or consumed hp was not mentioned the nameplate horsepower on the motor or engine is used. RPM of smaller sheave is an input and the figure was incorporated by using the rules of geometry. Point on a particular cross-section is selected by satisfying the geometric conditions of this point. Kθ has been determined from the table stored in the internal database of this program for the value of (D2-D1)/C and type of belt drive. KL has been determined by using the selected length and belt section from the table stored in the internal database of this program. The horsepower from rating equation must be adjusted for length of belt and arc of contact.

Source of Information: Progress. Agric. 19(2) : 187-194, 2008 ISSN 1017-8139

Article Link (Online Journal): http://www.banglajol.info/index.php/PA/article/view/16961/11912

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the above discussion it is clearly evident that this computer program for selecting V-belt is a very efficient tool in comparison with the conventional pen-paper calculation procedures. If conventional technique is used for selecting V-belt, it is laborious and time consuming. In such cases this computer program can be used for selecting V-belt easily. Giving values of transmitted hp, machine type (driven & driving), rpm of smaller sheave & larger pulley, center distance, operating conditions, diameter of smaller sheave and the type of drive (vv or v-flat) etc, as input finally this computer program shows the values of the diameter of smaller and larger sheave, center distance, belt length, belt number, required number of belt, belt cross-section, as output result. The computer generated output by using computer program has been found more accurate and efficient than the conventional calculation results.

Knowledge Management: Journal