Search results
Results from the WOW.Com Content Network
Hydraulic or pneumatic rotary actuator, using a rack and pinion Both hydraulic and pneumatic power may be used to drive an actuator, usually the larger and more powerful types. As their internal construction is generally similar (in principle, if not in size) they are often considered together as fluid power actuators. [ 2 ]
Hydraulic motors usually have a drain connection for the internal leakage, which means that when the power unit is turned off the hydraulic motor in the drive system will move slowly if an external load is acting on it. Thus, for applications such as a crane or winch with suspended load, there is always a need for a brake or a locking device.
The hydraulic fluid reservoir holds excess hydraulic fluid to accommodate volume changes from: cylinder extension and contraction, temperature driven expansion and contraction, and leaks. The reservoir is also designed to aid in separation of air from the fluid and also work as a heat accumulator to cover losses in the system when peak power is ...
A fluid coupling consists of three components, plus the hydraulic fluid: The housing, also known as the shell [5] (which must have an oil-tight seal around the drive shafts), contains the fluid and turbines. Two turbines (fanlike components): One connected to the input shaft; known as the pump or impeller, [5] or primary wheel input turbine. [5]
Electro-hydraulic actuators (EHAs), replace hydraulic systems with self-contained actuators operated solely by electrical power. EHAs eliminate the need for separate hydraulic pumps and tubing, because they include their own pump, [ 1 ] simplifying system architectures and improving safety and reliability.
Hydraulic transmission may refer to various transmission methods for transferring engine power to drive wheels, using hydraulic fluid: Diesel-hydraulic transmission , used in railway locomotives Hydrostatic transmission , using hydraulic motors to convert the fluid energy into rotary propulsion
World Class Poker. Texas Hold'em, Omaha, 7-Card Stud, 5-Card Draw and more at the most authentic free-to-play online poker room, based on the award-winning World Class Poker with T.J. Cloutier
The use of diaphragm mud pumps is less common, but with the advantage of a simpler design and usually lower overall costs. [3] The disadvantage is that mechanical parts come into contact with the sludge, which is not the case for the more common vacuum pumps. The truck can be configured to be a direct belt drive, or a hydraulic drive system.