Hydraulic Transmission


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to Hydraulic Transmission: hydraulic transmission system

Hydraulic Transmission

 

a device in which mechanical energy and motion at specified forces (torques) and speeds (rpm) are transmitted and converted by means of a fluid. Hydraulic transmissions are used in ships, diesel locomotives, motor vehicles, aircraft, lathes, machine tools, road-building machinery drives, compressors, ventilators, pumps, and so on. They are classified according to the principle of operation into two basic groups, the positive displacement type and the hydrodynamic type. They are also divided into those that convert or transmit mechanical power (hydraulic power transmissions) and those that convert motion for automatic control purposes.

Hydraulic transmissions may be combined with gearing so that the motion will be transmitted from the driving shaft via the hydraulic transmission, the gearing, or both simultaneously. Devices operating on this principle, known as hy-dromechanical transmissions, transmit larger amounts of power and have a greater control range than is possible with the usual hydraulic transmission.

Hydraulic transmissions are versatile, durable, and easily controlled, and they protect mechanisms from overloading. For these reasons they are widely used in modern machines.

References in periodicals archive ?
As presented in figure 1, an alternating flow driven hydraulic transmission is a closed circuit and does not require a tank for the working fluid.
David Brown designs and manufactures industrial gears and mechanical and hydraulic transmission systems used in a wide range of applications -- from industrial machinery, such as conveyors, to transportation applications, such as rail traction gears.
David Brown's products include industrial gears and mechanical and hydraulic transmission systems used in a wide range of applications -- from industrial machinery, such as conveyors, to transportation applications, such as rail traction gears.
Parker s RunWise hydraulic transmission represents a premier, alternative technology that is already surpassing the EPA s emission requirements by reducing fuel consumption and decreasing emissions for more than 30 cities across the U.
Description : Upgrading of 30 Diesel hydraulic 1250 hp locomotives by replacing the Diesel engine and the hydraulic transmission
Supply of lubricating fluids and engine oil as follows - 1000 lt special fluid for hydraulic brakes - tanks,- 60 000 kg diesel engine oil SAE 15W / 40 - in bulk,- 1800 kg diesel engine oil SAE 15W / 40 - drums,- 13 500 kg diesel engine oil SAE 10W / 40 - drums,- 38 000 kg for hydraulic transmission fluid - drums,- 5000 kg differential oil SAE 85W / 140 - drums.
One of Gorden's other businesses, Centranz, has grown from a heavy-duty truck repair service operating out of Gorden's van in 1969 to the global leader in remanufacturing hydraulic transmissions.
In difficult road conditions, the driver shifts the transmission from mechanical to mechanical-plus hydraulic transmissions at speeds up to 32 kph (20 mph).
In the different cases of robots, especially mobile robots, the most important parts of hydraulic transmissions are closed-loop systems.
From diesel to gas engines; transformable four-seaters; factory air-conditioned cabs; and hydraulic transmissions and dump beds, the Kubota RTV lineup truly offers unique solutions for everyone.

Full browser ?