the basic principles of hydraulics.ppt

7/23/2019 The basic principles of hydraulics.ppt

1/8

AKM 506

The basic principles of hydraulics

Speaker:Peter Musterman

PM-Akademie


2/8

2/98 gm AKM 506 FN 2 GB2

The basic principles of concrete pump hydraulics

Basic principles:

Pressure distribution

Speed variations

Laminar/turbulent flow

Main pump unit: Inline construction

Piston pump:

Axial piston variable-displacement pump

Components

Variable displacement pump

Fixed type
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3/8

2/98 gm AKM 506 FN 3 GB3

Basic principles

Components

Pumps

Valves

Monobloc

Accumulators

Cylinders

Motors

Hydraulic fluid

Filters

Pressure gauge

Appliedhydraulics Open and closed loop


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2/98 gm AKM 506 FN 4 GB4

Basic principles: Pressure distribution

Part of the energy in a system

with flowing liquids is lost due to

friction and the pressure drops.

The pressure of a static liquid is

distributed in all directions in aclosed system.


5/82/98 gm AKM 506 FN 5 GB5

negative angle

High pressure

Low pressure

Suction side

Return line

Piston pump: Variable-displacement pump

positive angle

HP

LP Suction

side


6/82/98 gm AKM 506 FN 6 GB6

Gear pump: internally geared

Delivery side

Suction side

The hydraulic fluid is conveyed in the

gaps between the teeth


7/82/98 gm AKM 506 FN 7 GB7

Valves: Pressure limiting valves

Limits the system pressure in

the hydraulic circuit

closed

open


8/82/98 gm AKM 506 FN 8 GB8

Accumulators

To store hydraulic energy

Charged by a pump

Instant energy discharge

the basic principles of hydraulics.ppt

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