Boom Suspension Solutions
HydraForce suspension systems improve load-handling performance for wheel loaders and also enhance operator comfort by reducing vibration and improving ride control. Optimal combinations of cartridge valves in customized manifolds that feature an integral accumulator allow for smooth suspension of the boom.
– How Boom Suspension Works
In a wheel loader, the boom suspension basically functions as a shock absorber for the bucket, creating a smoother ride for the operator.
Boom suspensions have the following benefits:
• Improved wheel contact with the ground, which helps steering and
• Load “floats” over terrain, allowing higher transport speed, fewer
repairs and downtime and increased productivity.
• Reduced vibration with loaded or unloaded bucket, fulfilling Vibration
Directive 2002.44.EC and improving driver comfort.
Basic Boom Suspension Example:
This manifold consists of solenoid valves SV12-28, SV10-22, pilot-operated relief valve with a reverse flow check and RV58-20A, a sequence valve with external pilot and drain with integral sensing PS10-41A and a check valve CV08-20.
Ride control solutions fall into two categories: Passive or Active.
PASSIVE BOOM SUSPENSION —
In a passive system, everything is pre-set – accumulator volume, pre-charge pressure and damping characteristics. Height control and spring rate are set according to load. The suspension can then be switched on or off. When on, damping is preset to a “best fit” constant. This solution features a dedicated PED rated relief valve for accumulator protection and low pressure drop/ high flow HyPerformance™ logic elements for low damping pressure, and easy on/off pressure adjustment.
PASSIVE BOOM SUSPENSION
ACTIVE BOOM SUSPENSION —
In an active system, at least one parameter is variable and can be changed depending on conditions.
Damping and spring rate can be adjusted in real time with a more sophisticated adaptive or active suspension system, which continuously adapts to the conditions of terrain, speed, etc. Fast, precise, repeatable valve response with low hysteresis is essential. HydraForce can provide fully customizable programming algorithms and hydraulic controls for a broad range of boom suspension solutions.