hydraulics, pneumatics and transmissions on construction and earthmoving machines

[barracane]

hydraulics, pneumatics and transmissions on construction and earthmoving machines
Hi, could some friend talk in a concise way about the operating principles of the operating machines, the hydraulics, the hydrostatics, the pneumatics, the hydrostatic power shift transmissions and the other more widespread ones, perhaps they are based on the Pascal principle, that is, the endothermic diesel engine activates the variable flow pumps, the circuit goes under pressure which activates the pistons, the transmission, the brakes, could you give us basic examples from Carlo and Mario Bruneri to modern caterpillars, thanks, a chronological evolutionary history of the operating machines, the differential locks, the salient stages, thanks

Pascal's law

xaktly.com

Pascal’s law – Hydraulics Power

Posts about Pascal’s law written by sudubva

bvahydraulics.wordpress.com

??

 

[Gecko]

Pascals Law / principle simply states that in closed system, the pressure of a fluid will be constant - there are some assumptions - no flow, insignificant hight difference, incompressable fluid, but that's all it is.

 

[V8Druid]

Pascals Law / principle simply states that in closed system, the pressure of a fluid will be constant - there are some assumptions - no flow, insignificant hight difference, incompressable fluid, but that's all it is.

and that's exactly what makes hydraulics work

 

[Gecko]

and that's exactly what makes hydraulics work

Sure - the "incompressable fluid" means pressure changes happen 'almost' instantly (in reality, it happens at the speed of sound, but it's not often that makes a differnce).

Pnumatics is very similar, but the working fluid (usually air) is very squishy by comparison.

 

[Mick-the-fitter]

In this scenario! (the endothermic diesel engine activates the variable flow pumps, the circuit goes under pressure which activates the pistons) there would be a series of pumps(gear pumps, variable flow pumps) the engine drives a gear pump giving pilot pressure to enable the control of the variable pump plate angle, giving more or less flow/ pressure.

 

[barracane]

???