The accumulator in a concrete pump truck serves the purpose of
storing energy and providing a surge of hydraulic power when
needed. Here is a description of the function and role of the
accumulator in a concrete pump truck:
The accumulator, also known as the hydraulic accumulator, is a
component of the hydraulic system in a concrete pump truck. It is
designed to store hydraulic energy in the form of pressurized
fluid.
The primary function of the accumulator is to provide a surge of
hydraulic power when the demand exceeds the capacity of the primary
hydraulic system. It acts as a temporary energy reserve, allowing
for quick and efficient response during peak power requirements.
During normal operation, the accumulator is charged (pressurized)
by the hydraulic pump. As the pump operates, it continuously
supplies fluid to the accumulator, compressing a gas (typically
nitrogen) within the accumulator's bladder or piston arrangement.
This creates a stored energy potential.
When there is a sudden increase in hydraulic power demand, such as
when the concrete pump needs to rapidly extend or retract its boom
or perform other high-power actions, the accumulator discharges its
stored energy. The pressurized fluid is released from the
accumulator, providing an instant surge of hydraulic power to meet
the increased demand.
The accumulator helps to improve the responsiveness and efficiency
of the hydraulic system in a concrete pump truck. By providing
additional power during peak demand, it reduces the strain on the
hydraulic pump and other components, prolonging their lifespan and
ensuring smoother operation.
Additionally, the accumulator helps to compensate for pressure
variations in the hydraulic system. It absorbs pressure
fluctuations caused by changes in load or speed, minimizing
pressure spikes and ensuring a more stable and controlled
operation.