|
|
Drive and Control Systems for Commercial Vehicle Superstructures
Pioneering and Competitive Drive Hydraulics for Commercial Vehicle Equipment
|
|
|
|
|
|
Rotary Group and Body Superstructure
- Rotary group proven millions of times
- Low intrinsic weight
- Slim construction (due to cramped installation conditions)
- Bent-axis axial piston design
- Self-priming for open circuit
- Spherical, self-centring control area
- Cylinder transmission without universal joint
- Tapered piston sealed with piston rings
- Forced lubrication of all moving parts
- Reduced pressure pulsation due to the noise-optimised transmission
- No drain line required: internal drain to the pump inlet side
- Two shaft sealing rings, sealing the inside and outside.
A relief hole between the two seals prevents any pressure accumulation
Operating Principle and Features
- The volumetric flow is proportional to the drive speed and the displacement volume per turn, which, in the case of the variable displacement pump, is infinitely variable between 0 and Vg max
- Suitable for simple throttle control (KFA) or user-friendly load-sensing systems (KVA)
- The favourable dimensions and lightweight construction (aluminium housing) provide advantages of easy installation and reduced vehicle weight
- The drive shaft and mounting flange are suitable for direct mounting on the PTO of all common truck transmissions conforming to the European standard (DIN)
- The systems have robust conical roller bearings, so that they are also suitable for mounting on drive shafts with universal joints
- High overall efficiency
- Patented simple system for changing the direction of rotation
Comparison between drive systems with throttle control and load-sensing control clearly shows the energy-saving possibilities of the LS control system. In addition to improved ease of use and sensitivity, energy costs are reduced.
Throttle Control with Fixed Displacement Pump
The fixed displacement pump is designed for the maximum required power and therefore delivers 100% of the drive power. When the power requirement is reduced, the excess oil flow is throttled, converted to waste heat and cooled down by large heat exchangers.
Load-sensing Control with Variable Displacement Pump
The drive power of the variable displacement pump is adjusted to the relevant requirements by the LS controller. In this system, no excess oil flow is produced by the variable displacement pump, so that no power is lost in the form of waste heat.
Fields of Application
Tipper Vehicles
- Rear tippers, 3-sided tippers
- Roll-off dumpers, dump trucks
- Hook tippers
Self-propelled Cranes
- Loading cranes, timber loading cranes
- Lift platforms
- Service cranes (mobile cranes)
Local Authority Vehicles
- Refuse disposal trucks
- Road-sweeping vehicles
- Fire engines
Tankers
- Tankers for liquids, granulates and flour
- Drives for feed pumps and compressors
Special Vehicles
- Refrigerated vehicles
- Glass transporters, stone transporters
- Washing and vacuuming vehicles
- Drives for generators
- Additional ground drives
Fan Drives
To view the last image, (JPEG, 397KB), click here
Relevant links for Commercial Vehicle Superstructures
Back to Drive and Control Systems for Commercial Vehicle Superstructures Home Page
|
|
|
|
