TOOLS AND ACCESSORIES
Hydraulic tools use liquid fluid energy to do the job. Heavy construction vehicles are a common example. In this type of hydraulic machine, hydraulic fluid is pumped to various hydraulic motors and hydraulic cylinders throughout the machine and becomes pressurized according to the resistance present. Fluid is directly or automatically controlled by control valves and distributed through hoses, tubes or pipes.
Hydraulic systems, like pneumatic systems, are based on Pascal’s law, which states that any pressure applied to a fluid within a closed system will transmit that pressure equally everywhere and in all directions. A hydraulic system uses an incompressible liquid as its fluid rather than a compressible gas.
The popularity of hydraulic tools is due to the large amount of energy that can be transferred through small flexible tubes and hoses, and the high energy density and wide variety of actuators that can make use of this energy, and the enormous multiplication of forces which can be achieved by applying pressure on relatively large areas. One disadvantage, compared to machines that use gears and shafts, is that any transmission of energy results in some losses due to the resistance of fluid flow through the pipeline.
A key feature of hydraulic tools is the ability to easily apply force or torque multiplication, regardless of the distance between input and output, without the need for mechanical gears or levers, either by changing the effective areas in two connected cylinders or the effective displacement (cc / rev) between pump and motor. In normal cases, hydraulic ratios are combined with a mechanical force or torque ratio for ideal machine designs such as boom movements and track drives for an excavator.
Tecnoar represents Momento in Porto, Portugal.
