Transcript Mobile Controls Division

System with fixed pump
Spool in neutral
Activated spool
Max.
Pump
Flow
“METER
OUT”
LOWERING
“METER
IN”
LIFTING
Typical flow characteristic
Manually controled valve
100 %
Spool travel
Constant Flow Open Centre System “CFO”
Mobile Controls
07/04/2015
System with variable pump
Spool in mid position
Activated spool
Max.
Pump
Flow
“METER
OUT”
LOWERING
“METER
IN”
LYFTING
100 %
Typical flow characteristic Spool travel
Manual controlled valve
Load-sensing system “LS”
Closed Centre Valve
Mobile Controls
07/04/2015
System with fixed pump and LS valve
L90LS
valve
F1 +
pump
Constant Flow Closed center system “CFC”
Mobile Controls
07/04/2015
System with fixed pump and LS valve
50
100
50
100
200
210
210
210
210
210
210
200
210
200
THREE FUNCTIONS WITHOUT INDIVIDUAL
PRESSURE COMPENSATORS
Mobile Controls
07/04/2015
PRESSURE COMPENSATOR
PILOT
STAGE
INDIVIDUAL COMPENSATOR WITH
PRESSURE REDUCTION FUNCTION
OR FEED REDUCTION FUNCTION
Mobile Controls
07/04/2015
System with fixed pump and LS valve
50
200
100
100
50
200
200
56
6 BAR
6 BAR
210
206
106
210
6 BAR
210
210
THREE FUNCTION WITH INDIVIDUAL
PRESSURE COMPENSATORS
Mobile Controls
07/04/2015
Energy comparison in systems
Systems with fixed pump ”CFO”
P pressure
P pressure
Q flow
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Systems with variable pump ”LS”
Q flow
07/04/2015
Applications well suited for ”LS”
Great demands for
manoeuvrability
Arial lift
Very suitable
for ”LS”
Forest machine
systems
Excavator
Backhoe loader
Hook loader
Refuse collector
Large wheel loader
Great demands for
productivity
Mobile Controls
07/04/2015
System with variable pump and LS
Suitable when;
 When partial pump flow is used for individual
functions
 At high intensity usage
 To create simple system solutions when a number of
functions with different flow rates is demanded
 When system layout is spread out
 At simultanious operation of functions
 Power control and energy conservation
 Reduce energy losses at idling and transportation
Mobile Controls
07/04/2015
Save energy, design advises
 Avoid to mix light and heavy loads from the same pump.
 Avoid to mix large and small flow demands from the same fixed
pump.
 Never control max flow with line mounted restrictors.
 Always use the pump regulator to set maximum work pressure
when you are using a variable pump. The pressure limiter of the
valve needs to be set at least 30 bars above.
 Avoid to limit valve work port pressure with the chock valves,
use the build in individual work port feed reducer.
 Make sure that the cylinders are correctly connected to the
valve, the valve is normally adapted to the cylinder ratio.
Mobile Controls
07/04/2015
LS - Valve Range
For systems with variable displacement pumps
M400
250-600
HV08 LS
150-350
K220LS
100-250
L90LS
50-130
0
100
200
300
400
500
600
Flow l/m in
Mobile Controls
07/04/2015
L90LS
Features
- Emergency stop
- Individual pressure compensators
- Feed reducers
- Force control
- Fast acting leake tight port relief valves
- Counter pressure valve
- Built-in pilot pressure supply
- Wide range of spool-actuators
- Wide range of function adapted spools
- Copied load signal
- Fixed or variable pump
Mobile Controls
07/04/2015
L90LS
CFC-systems
LS-systems
Flow/section 90 l/min, without
compensator
130 l/min
Nodular iron
Max pressure 320 bar
Stackable 1 to 10 sections
Service ports
G1/2
- 7/8” - 14UN
-
Two speed control
Lever release function
Mobile Controls
Pump unloading inlet
Built-in main & port relief valves
Built-in feed reducers
Copy spool function
Function manifolds
Spool actuators
manual
- pneumatic prop & on-off
- hydraulic
- electro-hydraulic prop & onoff
-
Pressure compensators
Application adapted spools
07/04/2015
L90LS
Applications
- Forest machines
- Articulated truck
-
-
cranes
Fork lifts
Excavators
Refuse vehicles
Skip loaders
Drill rigs
Customers
- SISU Logging
- F Weyhausen
- Schaeff
- Atlas Copco
- Pel Job
Mobile Controls
07/04/2015
K170LS/K220LS
Features
- Individual pressure
-
-
compensators
Feed reducers
Force control
Fast acting leak tight port
relief valves
Counter pressure valve
Built-in pilot pressure supply
Wide range of function adapted
spools
Copied load signal
Intermediate sections
Mid-inlet
Mobile Controls
07/04/2015
K170LS/K220LS
LS-systems
Flow/section 170 l/min,
without compensator
210 l/min
Nodular iron
Max pressure 320 bar
Stackable 1 to 10 sections
Motorports
G3/4
- 1 1/16” - 12UN
- SAE 1”
-
Mobile Controls
Built-in main & port relief valves
Built-in feed reducers
Copy spool function
Spool actuators
hydraulic
- electro-hydraulic prop &
on-off
-
Pressure compensators
Application adapted spools
Intermediate sections
07/04/2015
K170LS/K220LS
Applications
- Forest machines
- Excavators
- Backhoe loaders
- Reach stackers
- Wheel loaders
- Fork lifts
Customers
- Timberjack
- Volvo
- Barko
- Ponsse
- Kalmar LMV
Mobile Controls
07/04/2015
HV08
Features
- Optional unloading valve in the
-
-
inlet section
Flow force pressure
compensation
Feed reducers
Force control
Fast acting leak tight port relief
valves
Counter pressure valve
Wide range of function adapted
spools
Copied load signal
Anti-priority function
Mobile Controls
07/04/2015
HV08
CFC-systems
LS-systems
Max flow/section 320 l/min
Grey & nodular iron
Max pressure 320 bar
Stackable 1 to 6 sections
Service ports
-
SAE 1”
Built-in main & port relief
valves
Built-in feed reducer
Copy spool function
Spool actuators
manual
- pneumatic prop & on/off
- hydraulic
- electro-hydraulic prop &
on-off
-
Application adapted spools
Anti priority function
Mobile Controls
07/04/2015
HV08
Applications
- Reach stackers
- Articulated dump
trucks
- Mobile cranes
- Forest machines
Customers
- Volvo
- Kalmar LMV
- SMV
- Lansing
Mobile Controls
07/04/2015
M400LS
Features
- Poppet design
- zero leakage
- not sensitive to
-
-
-
temperature shocks
Fast acting leak-tight port
relief valves
Counter pressure valve
Function adapted spools
Low pressure drops
- high function speed
- low energy consumption
Priority function
Easy to install
Dual cylinder ports
Mobile Controls
07/04/2015
M400LS
LS-systems
Flow/section 450 l/min
Nodular iron
Max pump pressure 300 bar
Max service port pressure 400
bar
Monoblock 2-section
Connections
Pump, 2 x 1 1/4 “
- Tank, 1 x 1 1/2”
- Service ports, 8 x 1”
-
Mobile Controls
Built-in port relief valves
Built-in counter pressure valve
Spool actuators
PC
- FPC
-
Built-in pressure-controlled
float position function
Priority function
Poppet-valve concept
Application adapted spools
07/04/2015
M400LS
Applications
- Wheel loaders
- Reach stackers
- Mobile cranes
- Forest machines
- Excavators
Customers
- Volvo
- Ljungby Machine
- Luna
Mobile Controls
07/04/2015
L90LS
RELIEF
FUNCTION
BYPASS
VALVE
B A
T
T
COMPENSATOR
(K)
DIRECTION
CONTROL
SPOOL
INDIVIDUAL
PRESSURE
REDUCTION
FUNCTIONS
L.S.
LOGIC
CHECK
VALVE
P
L.S.
P
EMERGENCY
STOP (BEN)
L.S.
CFC INLET SECTION + SPOOL SECTION
Mobile Controls
07/04/2015
2
L90LS Inlet section
P1
T1
LS
PX
PL
Inlet Compensator, Emergency Stop Function
and Main Relief Valve With Pilot Assembly
Mobile Controls
07/04/2015
2
L90LS
LS2 Inlet Section Showing Direct Acting Fixed
Setting Relief Valve Cartridge
Mobile Controls
07/04/2015
2
L90LS
PILOT
STAGE
MAIN
STAGE
B A
T
T
COMPENSATOR
(K)
DIRECTION
CONTROL
SPOOL
INDIVIDUAL
PRESSURE
REDUCTION
FUNCTIONS
COPY
SPOOL
L.S.
LOGIC
CHECK
VALVE
P
L.S.
P
P.X.
L.S.
P.L.
LS1 Inlet Section Showing Copy
Spool Function
Mobile Controls
07/04/2015
2
L90LS
LS
PX
PL
Inlet Section Showing Copy Spool Function
Mobile Controls
07/04/2015
2
L90LS
A
B
PS
TP
T
MP
T3
P2
P
L.S.
L.S.P.
COUNTER PRESSURE
VALVE
Single Spool Valve EC Operated
Showing Service Line Relief / Anti- cavitation Cartridges &
Counter-pressure valve in Outlet Section
Mobile Controls
07/04/2015
2
L90LS Outlet Section
T2/MP
T3
TP
PS
LSP
Outlet Section Showing Pressure Reducing For Pilot Supply
and Counterpressure Valve
Mobile Controls
07/04/2015
3
L90LS
Load sense valve LS and/or CFC
Spool in neutral position
Mobile Controls
07/04/2015
L90LS
Load sense valve LS and/or CFC
Spool in outer position
*PBAT = Pump to motorport B. Motorport A to tank.
Mobile Controls
07/04/2015
L90LS
100
FLOW (LPM)
75
50
25
0
20
40
60
80
100%
SPOOL STROKE
Metering to Motor Port Versus Spool Stroke
Mobile Controls
07/04/2015
3
L90LS
100
FLOW (LPM)
80
60
40
20
0
0
100
200
300
DIFFERENTIAL PRESSURE ( Bar )
Performance of Individual Compensator Against
Differential Pressure from Valve Inlet to Motor Port
Mobile Controls
07/04/2015
3
L90LS
Load sense valve LS and/or CFC
with pressure feedback on B-side
*PBAT = Pump to motorport B. Motorport A to tank.
Mobile Controls
07/04/2015
L90LS
Load sense valve LS and/or CFC
with LS-logic
*PBAT = Pump to motorport B. Motorport A to tank.
Mobile Controls
07/04/2015
L90LS
A
B
A
B
PS
TP
T
T2
T3
P2
P
L.S.
L.S.P.
Two spool valve with M10 manifold
Mobile Controls
07/04/2015
3
L90LS
M10 Manifold Section
Mobile Controls
07/04/2015
3
L90LS
FEATURE
STACKABLE
VALVE.
MODULAR
CONSTRUCTION.
ADVANTAGE
BENEFIT
FLEXIBILITY.
EASIER TO INSTALL.
CHEAPER TO SERVICE.
SIMPLIFICATION
FEWER EXTERNAL
COMPONENTS.
LOAD SENSING
WITH
VARIABLE PUMP.
EMERGENCY
STOP.
SIMPLE DESIGN
HIGHER MACHINE
BETTER FUEL ECONOMY.
PERFORMANCE.
HIGHER
WORKING CAPACITY.
EASIER TO RETROFIT
OTHER FUNCTIONS
EASIER TO MEET
EC DIRECTIVES.
EASIER TO INSTALL.
PRESSURE
COMPENSATION.
FEED REDUCER
Mobile Controls
RELIABILITY.
EASIER TO INSTALL
SYSTEM.
SIMPLE SYSTEM DESIGN
& ASSEMBLY.
INDIVIDUAL MAX.
SPEEDS.
EASY TO SET DIFFERENT
FORCE LEVELS.
EASILY INSTALLED
OPTIMISED PERFORMANCE.
LOWER OVERALL COST.
IMPROVED SAFETY.
IMPROVED RELIABILITY.
NO INTERFERENCE
BETWEEN FUNCTIONS.
INCREASED EFFICIENCY.
SAFER OPERATION.
LOWER INSTALLATION COST
07/04/2015
3
L90LS
FEATURE
ADVANTAGE
BENEFIT
FORCE CONTROL
MORE GENTLE
MACHINE
CHARACTERISTICS
IMPROVED STABILITY & SAFETY
LESS WEAR &
GREATER EFFICIENCY.
LOWER RUNNING COSTS.
FAST ACTING
LEAK TIGHT
PORT
RELIEF VALVES
PREVENTS HIGH PEAK PRESSURES.
PORT RELIEF’S CAN BE SET CLOSE
TO MAX. WORKING PRESSURE.
COUNTER PRESSURE
VALVES
LESS RISK OF CAVITATION
SIMPLY TO INSTALL.
ENABLES UNLOADED
LOWERING.
PROVISION FOR
EXTERNAL
PILOT FILTER
GREATER FLEXIBILITY.
EASIER TO KEEP PILOT
SYSTEM COMPLETELY
CLEAN.
FUNCTION
ADAPTED
SPOOLS
EASY TO OPTIMISE
MACHINE
PERFORMANCE WITH
.
LESS STRESS ON MACHINE COMPONENTS.
IMPROVED RELIABILITY..
IMPROVED MACHINE PERFORMANCE.
LESS RISK OF CYLINDER OR MOTOR
DAMAGE.
IMPROVED FUEL ECONOMY
IMPROVED RELIABILITY.
LOWER INSTALLATION
COST
IMPROVED
CONTROLLABILITY,
SAFETY & RELIABILITY.
FEWER COMPONENTS
PILOT PRESSURE
SUPPLY.
Mobile Controls
SIMPLE SYSTEM
ASSEMBLY.
FEWER COMPONENTS
LOWER INSTALLATION
COST.
IMPROVED RELIABILITY.
07/04/2015
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