POWER & FREE
 
ALLMÄNT
PLUS
KONTSTRUKTIONSDETALJER
TEKNISK HUVUDSPECIFIKATION
ANVÄNDNINGSOMRÂDEN




ALLMÄNT


Power&Free transportörer kan klara mycket komplicerade materialhanteringsuppgifter. Exempel på det är sammankoppling mellan två eller flera arbetsstationer som arbetar i olika takt. Flexibiliten i P&F transportörer medger en rad möjligheter. Exempel på dessa är:

  • Nedkallning av önskat gods till önskad arbetsstation, med möjlighet till olika takt på olika arbetsstationer.
  • Möjlighet till buffertar var som helst i anläggningen.
  • Möjlighet till separering av godset, med olika delning, på olika ställen i anläggningen.
  • Möjlighet att ändra hastighet i olika delar av anläggningen.
  • Möjlighet till sortering av gods efter många olika variabler.
  • Möjlighet till växling av gods.
  • Möjlighet att låta gods som inte kan tas emot på arbetsstationen återcirkulera.

PLUS

Possibility of working in particular critical atmospheres for example atmospheres with dust and/or ovens at high temperature, thanks to the use of both material and special ball-bearings for the chain.
Optimisation of the space use
.

Operation without automatic tension units, thanks to the chain that can work in compression.

 
 
P+F overhead conveyor system 32000: trolleys assembly with loading bar
 
Possibility to have horizontal bends with angles ranging from minimum 5 degrees to maximum 270 degrees and vertical bends with angles ranging from 5 degrees to maximum 45 degrees because the chain is completely bi-planer.

This allows to have bends with minimal radius without requiring the use of idle wheels. Negligeable friction and therefore limited wear of the rail components thanks to the uniform distribution of loads between chain and rails.


Limited wear and low noise level thanks to the contemporaneous unmatching of driving dogs and trolley anti-backward dogs when trolleys are in the buffer.

Excellent pull, as to wear and life, thanks to the use of drive units caterpillar type for the chains handling. Indeed the pull of the chain is always made on its axis regardless it is achieved on spiders or on bushes of bearings assembled on horizontal axis.

  P+F overhead conveyor system 2000: trolleys buffer
Frames unloading from upturned P+F conveyor to rollers conveyor  
Reduced values of the pull torque and the reduction in the size of the mechanical protection devices (safety coupling or torque limiters) and increased precision in the setting of the above mentioned devices thanks to the use of small diameter wheels on caterpillars.
Possibility to have slow and fast chains in the same plant: fast chains for a quick sorting, slow chains for close up treatments.


Possibity of five different type of buffers:

In line
In line and inclined (at 45°)
Transversally (at 90°)
In line and transversally
In line, inclined and transversally

  P+F overhead conveyor system 2000: 45° slant buffer


KONTSTRUKTIONSDETALJER

Power & Free conveyors are divided in two classes:

  • Overhead
  • Up- turned

Overhead conveyors are supported from the ceiling or the floor by suspensions. Up-turned conveyors are laid on the floor or buried and then protected by sheeting.

 
 

The conveyor essentially consists of twin tracks along which the chain and trolleys run respectively.


Self aligning 90° rotating hook  
  • The the overhead conveyor chain is housed in the upper track and the trolley in the lower one.
  • In the up-turned conveyors the chain runs along the lower track and trolley in the upper one.
  • It is also possible to have side-by-side dual track conveyors, in which the chain track is on the same level as the trolley track.

The track consists of two pairs of cold rolled sections with pressed steel straddle plates welded on them. The track segments -straight or bent- are connected together with bolts.

The chain has exclusively a pull function. It is completely bi-planer.

The trolley sets may be made into various arrangements using single, front, rear and intermediate trolleys according to the weight and the dimensions of the loads. They are driven by the chain by means of dogs and have an engaging and disengaging device from the drive chain in the stops and in the buffers.

  Multi lever carrier
Up-turned P+Fconveyor SYSTEM 2000: rotating hook

  Overhead P+F conveyor

 


Trolleys can be equipped with 90° rotary dogs or with continuous rotation dogs.

In environments with high temperature (ovens and pre-treatments) special devices are used to automatically compensate tracks, the oven structure and chain expansions.

Every conveyor has a drive unit of the chain (caterpillar type), a tension unit to adjust the tension of the chain by screws (Tension) and eventually automatic lubricators for chain and trolleys in case the transported products have to undergo high temperature treatments o pass though aggressive environments.


  Trolleys automatic lubricators, speed changing, inspection rail

The use of chain-switches allows to change the speed of the loads, while chain and trolley switches can route the loads into different lines or gather them together in the same line loads coming from various lines with the possibility of changes in speed too.

Trolleys stop, single or double, are used to stop the loads.

P & F conveyors can be equipped with drop-sections to move the loads vertically thus avoiding space problems with ascents and descents.

 

TEKNISK HUVUDSPECIFIKATION

 

As to their operational features, the P & F conveyors have continuos flow and a maximum speed of 16 m/min.
Higher speed can be reached according to the weight and size of loads.
The paylaod can reach 6000 daN according to the line features and the lay-out configuration.
Four types of chain and trolley allow the operation in different condition:


ANVÄNDNINGSOMRÂDEN

Inclines with rigid carrier Up-turned P+F conveyor: buffer for loading/unloading

Overhead  P+F conveyor feed by means of ground floor conveyors SYSTEM 08

Booster for speed changing

90° trolley buffer

P+F conveyor: 45° slant buffer

Overhead P+F conveyor system 34000:  carriers pusher into mechanical lines Up-turned P+F conveyor: incline with drive unit under ground floor level Buffer exit with speed changing

P+F conveyor system