Comparative Analysis for the Anti-Vibration Isolation of a Foundation in the Case of an Elevating Mechanism

To study the vibrations of a Multiparker lift lift model, use various models for the lifting mechanism. In order to increase the number of parking spaces in the center of the Romanian capital, it is intended to design a parking lot on several levels above the Dâmbovița river, which would include two elevators for lifting and lowering cars. One of the elevators works as a system of translating cam and roller translating follower and thus, due to transmitting the torque from the electric drive motor to the cam, respectively changing the travel direction at the end of the route, upon starting and stopping, vibrations may occur within the elevator. This system must be supported on a foundation in order to achieve anti-vibration isolation. There are several possibilities to achieve this anti-vibration isolation, among which one can mention the elastic suspensions mounted on springs, rubber mats or standardized elastic rubber elements

Designing of Energy-efficient Vehicle on Existing Challenges of Electric Vehicle, a Cost Effective and Environment-friendly Approach

An electric vehicle has an electric drive motor which is coupled to drive train for converting the rotational movement of the motor into linear motion of the vehicle and an energy storage device to provide power for the motor uses. Present invention takes advantage of the powerful wind force generated by the vehicle motion. Wind driven turbine of particular design is mounted to rotate the wind energy capturing device upon or in the upper portion of the roof and other is installed under the bonnet area of an electric vehicle to transform wind energy into electrical energy for feeding such energy into the battery pack as the vehicle is being driven forward. At least six wind energy capturing devices are coupled for generating a fast electric potential for recharging the power source. Said wind energy capturing devices would be mounted on particular designed housing and suitable clamps. The motive power of the air rotates the wind-turbines, which are rotatably engaged with an armature shaft to produce electrical energy that is used to continuously recharge the batteries in all phases of road travel, that power the vehicle. Thereby driving range is extended of the vehicle between external charging cycles and reduces time required for that. The design is also prioritized Energy-efficiency and cost-effectiveness of electric vehicles. It also becomes an approach to more environment-friendly rather than the conventional vehicles.

On the operation of blowers controlled by mechanical blades under extreme conditions

Снижение затрат электроэнергии на подачу воздуха в системы аэрации очистных сооружений за счет применения регулируемых воздуходувок является актуальной задачей. Представлен комплексный анализ опыта эксплуатации одноступенчатых центробежных воздуходувок, регулируемых механическими поворотными лопатками, в условиях низких температур окружающей среды, характерных для России. В ходе проведенного мониторинга контролировались параметры работы воздуходувок (температура воздуха на входе в компрессор, избыточное давление на выходе из компрессора, уровень вибрации, температура смазочного масла, температура подшипников вала рабочего колеса, потребляемый приводным электродвигателем ток). Reducing energy costs for air supply to aeration systems of the treatment facilities by using adjustable air blowers is an urgent task. A comprehensive analysis of operating single-stage centrifugal air blowers controlled by mechanical rotating blades under low ambient temperatures typical for Russia is presented. In the process of monitoring, the parameters of the air blowers were monitored (air temperature at the compressor inlet, excess pressure at the compressor outlet, vibration level, lubricating oil temperature, temperature of the impeller shaft bearings, input current consumed of the electric drive motor).

A New Electric Drive System for a Disc Brake System Used in the Vehicle, Experimental Stand

Papers present a new solution for achieving downforce to a brake disc, using a drive gear and ball screw-nut, which the construction adopted, allows moving ball-screw and making the necessary downforce for breaking. The stand includes downforce creating system required by deceleration, and is equipped with a plurality of sensors to determine the following parameters. Measurement of downforce-ring load cell, displacement in the running drive-pressure transducer, mechanism decoupling travel-differential inductive transducer, electrical motor and gear drive mechanism speed-speed transducer, and electric drive motor torque-lamellar load cell. These transducers allow the control of screw ball to realize the forces that are acting on the brake linings in order to control the speed of the vehicle. Using this construction, brake actuation can get higher quality reactions in brake systems.