Design and Fabrication of Car Wheel Dollies using Hydraulic Ratchet Mechanism
Design and Fabrication of Car Wheel Dollies using Hydraulic Ratchet Mechanism report
ABSTRACT - A project work on design and fabrication of a remote controlled system for a hydraulic jack which consist of a base, gearing system and crank mechanism is presented. The prototype includes motor powered from a 12v battery of a tractor through a car adapter or from a lighter adapter in vehicles. The motor with gearing system will be the lifting mechanism. When an equipment is needed to be lifted, just press the button on the remote device, firstly to lock the hydraulic jack valve, then pressing again will start the lifting operation and afterwards the button is released at a desired height level. The common problem faced by the current available hydraulic jacks in the market is that it is manually operated and needed physical effort to lift the vehicle or heavy equipment. Hydraulic jacks available at the market also has some disadvantages such as requiring more energy to operate, are not suitable for women and cannot be used on an uneven surface. The purpose of this project is to modify the design of the existing hydraulic jack in terms of its functionality and also human factor considerations This work was done based on the mechanism of hydraulic power system method, fabrication processes of marking out, cutting, assembling and finishing were employed where necessary. All the analysis and results such as the required torque and gearing ratio which are important in this project where all determined before the development and incorporations. Several tests were carried out to determine the effectiveness of the device in lifting loads of 1 ton, 2 ton, 3 ton, 4 ton and 5 ton respectively. This work would help to overcome drudgery, musculoskeletal disorders, injuries, increase timeliness and efficiency in the farm while carrying out maintenance works, would also help in reducing size, space occupied, cost employed in maintenance operations This work tries to modify a hydraulic jack by incorporating a prime mover and a remote control system all together in order to make load lifting easier and safer. In this design, the plunger is actuated through a connecting gear with the pinion gear when electrical power flows through the lighter receptacle connected to the motor, plugged to the automobile 12 V battery source to generate power for the prime mover (motor), which transmits its rotating speed to the pinion gear meshing with the bigger gear connected to the plunger lever to be oscillated with required speed reduction and increased torque to drive the hydraulic piston totally displacing manual handling of hydraulic jacks.