Design and Development of an AC/DC Mechanical Jack Lifter

Abstract

The study was focused on the design and development of the AC/DC Mechanical Jack Lifter. This project development research tried to achieve the following objectives: (1. To develop a mechanism in mechanical toggle jack lifter using AC/DC to be more efficient, stress free, saves time and a reliable way to achieve lifting of the load; 2. Evaluate the acceptability of the developed device in terms of design and construction, functionality, durability, and safety; and 3. To determine the efficiency of the mechanical toggle jack lifter and manual jack in terms of: 3.1. Thread deformation test (maximum displacement of jack, lifting time for electric jack and lifting time for manual jack); and 3.2. Maximum load carrying test (weight kg and displacement of jack mm). The five-point Likert’s scale was used to determine the descriptive meaning of the indicators of the variables used. In addition, Weighted Average Mean (WAM) was used to interpret data gathered. The Analysis of Variance (ANOVA) was also used to determine the significant difference between the evaluations of the respondents. Evaluation result shows that the acceptability of the project obtained an Overall Weighted Average Mean of 4.47 which means “Very Good” in terms of the Design, 3.62 in terms of functionality which means the project is “Functional”, 3.14 in terms of Durability which means the project is “Durable”, and 3.15 which means the project is “Safe” in terms of Safety. The project received an overall workability score of 3.39, which indicates "Good" in terms of packaging technique, 3.11 in terms of marketability, which indicates "Marketable," and 4.37 in terms of portability, which indicates "Very Portable."