HAWE Hydraulik SE, Munich, is exhibiting its new lifting module type HMPL at the 2011 Hanover Fair. It transforms hydraulic systems for forklifts with a rated bearing capacity of up to ten tons into flexible, energy-saving, compact solutions. The lifting module is used to lift and lower the forklift mast. It is designed as a connection block for HAWE Hydraulik's proven proportional directional spool valve type PSL, and so the combination of both products allows all the functions of a forklift to be utilized simply and reliably.
The lifting module is characterized by its low back pressure. This means that the lowering speed of the forks can be kept within the maximum permitted range even with no load. In addition, the vehicle loses less power. As a result, the energy consumed by the forklift falls and the capacity per full tank or battery charge increases. At the same time, the amount of heat developed in the system is limited, which reduces the thermal load on all the hydraulic components.
The direct fitting of the proportional directional spool valve onto the lifting module allows further functions to be implemented, such as the mast’s tilting function or the sideways movement of the fork and bale clamp. Adjusting the volume flows to the necessary consumer unit speed is uncomplicated, since the proportional directional spool valves are available in different sizes. Additional valves can be easily integrated, such as a single or double acting over center valve to move the fork backward and forward in a controlled fashion.
The forklift arm is raised and lowered using a proportional directional seated valve in the lifting module. This valve allows loads to be moved with outstanding precision at volume flows of up to 160 lpm. Because it is leak-free in closed position, it maintains pressure reliably and thus holds the load securely. Lifting and lowering can be carried out in black and white or proportionally.
The type HMPL is designed for a maximum operating pressure of 315 bar. It is available for fixed-displacement pump systems with integrated idle circulation and variable-displacement pump systems. All pressurized components are made of steel.
HAWE Hydraulik at the Hanover Fair 2011
April 4-8, 2011
Hall 19, booth C15 (MDA flagship show)
Hall 27, booth F02 (Wind flagship show)
Hanover Fair site
