International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 02 | Feb -2017
p-ISSN: 2395-0072
www.irjet.net
Design, Construction and Testing of an Electric Powered Toggle Jack Mechanism Ipilakyaa T.D.1, Achirgbenda V.T.2, Gbashi S.3 1Department
of Mechanical Engineering, University of Agriculture Makurdi, Benue State -Nigeria Department of Mechanical Engineering, University of Agriculture Makurdi, Benue State -Nigeria 3 Department of Mechanical Engineering, University of Agriculture Makurdi, Benue State -Nigeria
2
---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Road side emergencies such as tyre punch, is a
saving and more efficient. Thus achieving one of the goals of technology by making life easier for the end user, proper design considerations were given to the design of this project including the stresses, bending moment of the shafts, strength of materials and the maximum load it is expected to carry, thus making safety and reliability a watch word [2].
problem commonly observed in cars. Conventional car jacks uses mechanical advantage to allow a human to lift a vehicle by manual force. This paper is a modification of the current toggle jack by incorporating a servomotor whose motion as well as torque is transmitted via gear trains to the power screw, in order to make load lifting easier for emergency use with the aid of a 12V car battery as power source. Gear ratio is used to increase the lifting power. The significance and purpose of this work is to modify the existing car jack in order to make the operation easier, safer and more reliable in order to save individual internal energy and reduce health risks especially back ache problems associated with doing work in a bent or squatting position for a long period of time. Fabrication work has been done using milling, drilling, grinding, and welding machines. The developed car jack is tested on 1400kg Toyota Camry car. Loads were increased at intervals of 50 Kg using bags of cement and it was observed that, deformation of threads began at loads beyond 1550 Kg. this implies that, the electric powered jack mechanism is capable of lifting vehicles with maximum load of 1550 Kg. The device is highly efficient with high mechanical advantage and jacking speed of 2.98 mms-1 more than that of the manual jack which is 1.17 mms-1. Implementation of design will solve problem associated with ergonomics.
The objective of the study is to develop a mechanism in a power toggle jack that is more efficient, stress free, saves time and a reliable way to achieve lifting of the load. Brief Review of Power Toggle Jack: Jacks are lifting machines used to raise loads. This uses power screws which help in bearing the load. The efficiency is maximized with the use of lubrications. Types of Jack: The various types of jacks are; Screw jack, Toggle jack and Hydraulic jack. The toggle and screw jack uses power screw to raise load. The toggle jack has link members which are arranged to a certain degree of freedom. The hydraulic jack uses fluid but no screw. This is achieved by pumping or increasing the pressure of the fluid in the cylinder to raise the loaded shaft [2].
2. COMPONENTS OF THE POWERED TOGGLE JACK A Powered toggle jack has the following components; Upper links, Load bearing, support, the power screw shaft, 2 pins base support, Lower links, Driven gear, Driver, Gear housing, Base support, Servo motor, Alligator clips, Power switch and Connecting cable. The powered toggle jack is manufactured in such a way that a motor and gears are integrated to the jack. A motorized car jack only incorporates a motorized mechanism. The choice of D.C motor is because the power of a vehicle comes from a D.C battery. For this reason the user is able to supply the power to the motorized jack directly from the battery of the car. The powered toggle jack is ready for use whenever it is connected to the battery of the vehicle. A hand held toggle powered switch control is attached to it through which the operator is able to safely control jacking operations from some cable distance away from the vehicle. When the lift button is pressed, the jack lifts up the vehicle with a perfectly controllable speed. The down
Key Words: Toggle jack, Servomotor, Torque, Gear ratio.
1. INTRODUCTION A toggle jack is a machine which, when a small force is applied in its horizontal plane is used to raise or lower a large load. It is usually applicable in the automobile industry for raising a side of the vehicle during tyre changing [1]. It is made up of a bolt and nut assembly and its working principle is similar to that of an inclined plane. Where a thread wound round a shaft rotates in its bearings while the nut has axial motion against the resisting axial force. In the Nigerian market today, toggle jacks abound but what they have in common is that they are all manually operated. This project is geared towards researching and developing a toggle jack that is power operated, time
Š 2017, IRJET
|
Impact Factor value: 5.181
|
ISO 9001:2008 Certified Journal
|
Page 912