Applications Of Gears

Agro Industry Gears and gearboxes are widely used in the agro industry. With the advance in technology the agro industry has also advanced and India is still making significant advances in this field. Agriculture has been an essential activity for the survival of mankind. The agricultural industry has come a long way from subsistence farming to mechanized agriculture.

Importance of Gears in Agro Industry The industry makes use of modern technology and powered machinery in different processes. Many processes including tilling, seeding, ploughing, irrigation, pest and insect control etc. make use of a variety of specialized gears, pumps and engines for better farming technique. Agriculture vehicles like tractor also use different gearboxes.

In the early years agriculture was done with the power of hand. Oxen and horses were used for power, sowing was done by hand, threshing with flail and grain cutting with sickle. With the advance in technology, in the early years of 1900, geared tractors were used for extensive farming. In 1915 enclosed gears developed for tractors and thereafter gears became an important part of the agro industry.

Types of Gears used in Agro Industry All agro machinery consists of different types of gears depending upon their function and property. Different gears are used differently in the industry.

•

Spur gears - Transmit power in applications utilizing parallel shafts. They are also used as fuel pumps.

•

Helical gears - Transmit power between parallel and non-intersecting applications.

•

Racks - They are used for linear rotary power motion.

•

Pinion gears - connect shafts of motors on reducers.

•

Worm gears - Worm is used as vertical shaft threaded with small pitch angle from the horizontal.

•

Sprockets - Engages the link of a chain in the tractor.

Automotive Gears Automotive gears transmit torque and rotation through an angle from a power source to the

driven member. Extreme pressure gear oil is a lubricant for automotive gears and bearings. Automotive gears are machined from wrought bar stock and subsequently heat treated to develop the required surface hardness and tooth bending fatigue durability.

Automotive Gear Ratio Automotive gear ratio is the number of turns of the drive wheels in relation to the number of turns of the engine. If the engine is considered the input and the drive wheel is considered to be the output then the input gear or the pinion is said to mate with the output gear or the ring gear to drive or rotate it.

Importance of Gears in Automotive Industry Gears play an important role in trucks, car, buses, motor bikes and even geared cycles. These gears control speed and include gears like ring and pinion, spiral gear, hypoid gear, hydraulic gears, reduction gearbox. Depending on the size of the vehicles, the size of the gears also varies. There are low gears covering a shorter distance and are useful when speed is low. There are high gears also with larger number of teeth. These high gears cover a longer distance with one revolution of pedal.

Looking for Automobile gears, Click Here

Types of Automotive Gears • • • • • • • • • • • • • •

Bevel gears - Important components on all rotorcraft drive system. Crown wheel and pinion - Used in motorcycle automotive gearboxes. Differential gear - Helps two wheels of the car to rotate differentially with respect to each other. Fine pitch gear - It is an anti-backlash gear used to minimize errors introduced by backlash. Helical bevel gears - Used as storage and retrieval units in automobiles. Herringbone gears - Used for power transmission in automobiles. Internal gears - Used in rollers and as tools for creating solid models of drive systems. Master gear - Used to determine the accuracy of work gears. Miter gears - Used to transmit motion and power between intersecting shafts positioned at right angles. Rack - Converts the rotary motion of the wheel into linear motion and provides a gear reduction, making it easier to turn the wheels. Ring gears and pinion - Used in heavy truck differentials. Also used to convert the driving force from the drive shaft (power unit) to the drive wheels. Spiral bevel gears - Used in rotorcraft drive system. They are also used in power windows and power seats. Straight bevel gears - Used in differential of an automobile to connect the drive shaft to the rear axle. Worm gears - Used to transmit motion between perpendicular, non-intersecting shaft.

Marine Gears

Marine gears meet a wide variety of marine applications in a variety of configurations and installations to meet the most critical applications. They are used in yachts, work boats, fishing boats and other marine applications. Selection of the appropriate viscosity grade for marine applications is based on speed, load, operating temperature, and gear geometry. The viscosity required increases as the speed decreases. Specific marine applications include main propulsion, centrifuges, deck machinery such as winches, windlasses, cranes, turning gears, pumps, elevators, and rudder carriers.

Types of Marine Gears Worm gears - They offer corrosion protection. Bevel gears - They are used as special reduction gears for cruise. They are also used for transportation task. Helical gears - Transmit power and motion between parallel axis. Planetary gears - These are used foT co-axial drive.

Instrumentation Gears Instrumentation is the study, development, and manufacture of instruments, as for scientific or industrial use. Instrumentation gears are based on modular concept. Instrumentation gears are provided with or without hubs and are best suited for instrumentation and power transmission in light duty and medical automation fields. Instrumentation gears are manufactured using high accuracy gear cutting equipment. Standard gears are produced in stainless steel, hardened stainless steel, aluminum alloy an brass. Stainless steel is used when maximum corrossion resistance is required. Aluminium offers reduced inertia and good corrosion resistance when anodized. Hardened stainless steel offers remarkable combination of high strength and hardness.

Types of Instrumentation Gears Rack gears - Used to turn the dial that display weight. Pinion gears - Are used for accuracy evaluation. Spur gears - Used to determine the direction of the principle axis.

Bevel gears - Used to redirect the shaft from the horizontal gas turbine engine to the vertical rotor. Worm gears - They offer corrosion protection.

Power Station Power station is an electrical generating station. The energy efficiency of a power station is usually called thermal efficiency and may be defined as the electrical energy leaving the station divided by the fuel energy entering the station. It is essentially a measure of the overall fuel conversion efficiency for the electricity generation process.

Wind Turbine Wind energy is a converted form of solar energy. A wind energy system transforms the kinetic energy of the wind into mechanical or electrical energy that can be harnessed for practical use. Mechanical energy is most commonly used for pumping water in rural or remote locations. Wind electric turbines are used to generate electricity. Turbine systems include a rotor, or blades which convert the wind's energy into rotational shaft energy; a tower to support the rotor and drive train; a nacelle including a gearbox and a generator; and electronic equipments such as controls, electrical cables, ground support equipments, and interconnection equipments. When the rotor rotates, the load on the main shaft is very heavy. It runs with approximate 22 revolutions per minute but generator has to go a lot faster. It cannot use the turning force to increase the number of revolutions and that is why wind turbine uses gear to increase the speed

Mill heads Mill is a machine or device that reduces a solid or coarse substance into pulp or minute grains by crushing, grinding, or pressing. Milling is a process of grinding in a mill. The gearboxes with parallel shafts can drive mills with single or double lateral drives. There is a milling tool designed to mill heads or sockets of joints of spherical form, which comprises a cup formed at least partly as a half sphere and in any case can be connected with a hand-operated milling

machine to revolve around the axis of the sphere which is perpendicular to the equational plane of the half sphere.