Simbolos Hidraulicos Din Iso 1219

5/21/2018 Simbolos Hidraulicos Din Iso 1219

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AlleRechtebeiRobertBoschGmbH,auchfrdenFallvonSchutzrechtsanmeldungen.

JedeVerfgungsbefugnis,wieKopier-undWeitergaberechtbeiuns.

BOSCH

Bosch Automation TechnologySymbols according to DIN/ISO 1219

AT/VS Z 300.0

Designation Explanation Symbol

DisplacementFixed Variable

Pumps

with one fl ow direction

with two fl ow directions(reversible)

Hydraulic motor

with one fl ow direction

with two fl ow directions

Pump/motor

Pump actuation with electric motor

with internal combustion engine

Components which can operateboth as pumps and motors

Conversion of hydraulic energyinto mechanical energy of rotation

Conversion of mechanical tohydraulic energy

M


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Hydrostatic transmission

Oscillating motor Rotation angle I 360h

Torque converter, variable capacity

pump and hydraulic motor

Simplified

ary equipm


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AT/VS Z 301.2


Cylinder single acting

single acting with spring return

double actingdifferential cylinder

double acting cylinder withpiston rods on both ends

cylinder with cushion

at end position

cushion adjustableat both ends

telescope cylinder

cylinder withstroke limit switches

Conversion of hydraulic energyinto mechanical energy in theform of linear motion

With different piston areas

Two identical piston areas

S1 S2


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Designation Explanation Sym

Directional control valves

Valves, which are used to open or close various flow paths.

The basic characteristics of these valves are as follows:

number of switching positions. These are indicated by a correspondingnumber of squares, each denoted by means of letters, such as 0, a, b (*)

number of ports and possible connections for each switching position.This is given by lines and arrows inside the particular square.

Ports of valves are marked with the following letters (at the basic switchedposition 0)*

P pump, pressureT tank, returnA, B loadX, Y, Z pilot portsL leakage oil port

Example:4/3 directional control valve

number of switching positionsnumber of ports

Pronunciation: four-three directional control valve

a 0

a 0

A

P


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Designation Explanation Sy

2/2 directional control valve





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Designation Explanation

Switching mechanisms fordirectional control valvesa) directly operated

Located at the particular position inwhich the valve is switched whencontrol is performed

Version ISO 1

Manual control lever

Pedal

Plunger

Roller

Spring-centered


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Switching mechanisms fordirectional control valvesa) directly operated

Located at the particular positi-on in which the valve is switchedwhen control is performed

Version ISO 1

Spring-centered

With solenoid

Hydraulic actuation

Pneumatic actuation

Example: spring return appliedon one end

Example: on both ends, springcentered


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Switching mechanisms fordirectional control valvesa) pilot operated

Located at the particular positi-on in which the valve is switchedwhen control is performed

Version ISO 1

Hydraulically actuated,electromagnetically controlled

Large size directional control val-ves are hydraulically actuated bymeans of a pilot valve. This inturn is oder pneumaelectricallyor pneumatically controlled

Detailed

Simplified

P

a

a

a

X

a


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Designation Explanation S

Directional control valves with gradual transitionThese are valves with gradual transition in switching, which providevariable throttling effect. In hydraulic circuits they are shown withtwo additional lines, parallel to the length of the symbol.

Tracer valve with plunger, ope-rated against a return spring

Solenoid operatedproportional valve

Electrohydraulic control valvewith spool position control

A

P

A B

P T


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AT/VS Z 304.2


Pressure control valves

These are valves which are used to control pressure.The symbol, representing such valves is a square with an arrow inside.The throttling area is varied in a smooth manner.

DIN-ISO 1219 ISO 1219-1

Directly operated pressurerelief valve Normally closed; it opens when apre-set input pressure is reached

Pilot operated pressure relief Oil drain in the control circuit isnormally built-in

Directly operated pressure

reducing valve

Normally open; it opens when a

preset input pressure is reached

Pilot operated pressurereducing valve

External drainage in the controlcircuit

3-way directly operated pressurereducing valve

Actuator unloading throughthe 3rd port


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AT/VS Z 305.2


Flow control valves

These are valves which infl uence the volumetric fl ow. they are repre-sented by graphical symbols showing a restriction in the line area.

Orifi ce Short throttle segment

Flow rate depends on thepressure difference

Flow rate is not dependent onpressure drop

With by-pass check valve

The surplus fl ow is fedthrough the 3rd port

Flow division based on fi xed ratioand depending on load

Throttle valvevariable/fi xed orifi ce

Throttle valve with check valve

Flow control valve

3-way fl ow control valve

Flow divider

DIN-ISO 1219 ISO 1219-1


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Designation Explanation S

Pilot operated sequence valvewith external signal input

Switches when previously fixedpressure is reached; hydraulicconnection

Pressure switch Switches when fixed pressure isreached by means of electricalcontact


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Designation Explanation Symb

Check valves

Valves closing pressure and flow rate in one direction

Non-return valves with/without closing spring

Pilot-operated check valve opens the closed directionwhen there is pressure at thecontrol input

Seated valve with magnetic opens the closed directionwith a magnet actuation

Shuttle valve performs the logicalOR function


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Designation Explanation Symb

Energy transmission andaccessories

Lines Main conduits

Control and drain lines

Flexible connection lines hoses

Line junctions

Crossed lines with nocontact

Air bleeding

Quick-acting coupling

Rotating joint


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AT/VS Z 307.0


Oil tanking, measurement instruments, etc.

Tank with piping, oil levelindicator and bleeding

Hydraulic accumulator

Filte

Cooler

Heater

Pressure-gauge

Flowmeter

Documents

Simbolos Hidraulicos Din Iso 1219