Automatic Forklift System

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  • Topic: Bearing, Ball bearing, Fluid bearing
  • Pages : 29 (9017 words )
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  • Published : May 1, 2013
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CHAPTER 1
INTRODUCTION
1.1 History
A forklift (also called a lift truck, a high/low, a stacker-truck, trailer loader, side loader or a fork hoist) is a powered industrial truck used to lift and transport materials. The modern forklift was developed in the 1920s by various companies including the transmission manufacturing company Clark and the hoist company Yale & Towne Manufacturing. The forklift has since become an indispensable piece of equipment in manufacturing and warehousing operations. The middle 19th century through the early 20th century saw the developments that led to today's modern forklifts. The Pennsylvania Railroad in 1906 introduced battery powered platform trucks for moving luggage at their Altoona, Pennsylvania train station. World War I saw the development of different types of material handling equipment in the United Kingdom by Ransomes, Sims and Jeffries of Ipswich. This was in part due to the labor shortages caused by the war. In 1917 Clark in the United States began developing and using powered tractor and powered lift tractors in their factories. In 1919 the Towmotor Company and Yale & Towne Manufacturing in 1920 entered the lift truck market in the United States. Continuing development and expanded use of the forklift continued through the 1920s and 1930s. World War II, like World War I before, spurred the use of forklift trucks in the war effort. Following the war, more efficient methods for storing products in warehouses were being implemented. Warehouses needed more maneuverable forklift trucks that could reach greater heights. New forklift models were made that filled this need. In 1956 Toyota introduced its first lift truck model, the Model LA, in Japan and sold its first forklift in the United States in 1967.

1.2 Working Principle
In this project we have two line tracking sensors and those are connected like ground line looking position. The robot’s path should be in black line, because of the sensors can easily detect the black line. When the power is given to the circuit the controller will on the DC motors, which is connected to the fork lift wheel. So the fork lift will move in forward direction on the black line. When the right side sensor sense the black line means the controller will rotate the wheels in right side. When the left side sensor sense the black line means the controller will rotate the wheels in left side, so that the robot can follow the black line. Our model consists of three motors. The first two motors are used to run the robot model. The third motor is in the front of the frame which is mounted with the lead screw arrangement. The fork lift arrangement is mounted on the lead screw such that it can be moved up and down. The third motor in model is used for up and down movement of the fork. The above all arrangements are used to lift a weight from one place and carry it to another place. The whole setup is operated through remote signaling device.

1.3 Target Users
The Automatic Forklift System (AFS) is designed to make the process of stocking efficient while decreasing unnecessary work related spending. A one-sixth scale model forklift is being used to demonstrate the feasibility of the project. An operator will control the system at a safe distance away from the forklift, such as in a separate control room, decreasing the risk of work related injuries with a handheld user interface. The intended users of the AFS would be distributing centers, as well as any company with a large warehouse that uses forklifts to move pallets. The ideal environment for this system would be warehouses with little to no foot traffic that require a forklift to move pallets from trucks to their respective shelves, or stacks, etc. Employers will benefit from this system by saving money in the long run. An initial investment in the AFS will reduce the cost of employing multiple forklift operators needed to keep up with the inflow and outflow of large...
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