Low Graphics Version
  Thursday, 3 September 2015
Welcome to ACP&D Limited
 

Mobile hydraulics

Stepping motor based linear actuator for hydraulic valves, type: 8366 as used on mobile hydrulic applications

Wherever high forces have to be applied in mobile applications, hydraulic systems are used. Typical examples are agricultural and construction machinery such as tractors, combine harvesters, excavators, loaders and forklift trucks. As a long-standing supplier to leading companies like John Deere, Sonceboz has extensive experience of stepping motor technology for mobile hydraulic uses.
 
For the adjustment of mobile hydraulic components such as multi-way valves, electro-hydraulic pre-controls with proportional magnets are used in most cases nowadays. By adopting mechatronic systems with stepping motors and integrated electronics with a CAN bus instead of classic servo-elements, a number of significant advantages are achieved:

For the adjustment of mobile hydraulic components such as multi-way valves, electro-hydraulic pre-controls with proportional magnets are used in most cases nowadays. By adopting mechatronic systems with stepping motors and integrated electronics with a CAN bus instead of classic servo-elements, a number of significant advantages are achieved:
 
- Simplified system structure thanks to a decentralised intelligence with a CAN bus.
 
- No hydraulic pilot valve required due to a direct coupling between the step motor and
  the main valve.
 
- Sensitive regulation through high resolution and negligible hysteresis.
 
- No initial adjustment or calibration required.
 
- High system rigidity and immunity to shocks, vibrations and load changes .

There are a number of features and benefits of the stepping motor driven linear actuators as compared to solonoid operated pilot valves in mobile hydraulics applications and these are as follows:

Features

Benefits

High Torque

Cost-effective direct actuation without the need for a pilot valve

Sinewave holding torque curve

High stiffness and immunity against vibrations

2-way rotary movement

ONE motor only for both directions

High resolution

Fine positioning and smooth movement

Brushless system

No maintenance, long life time

Digital system

No calibration required

High efficiency

Lower power requirement than traditional methods

In this application a mechatronic system from Sonceboz is being applied to a hydraulic situation. A hybrid stepping motor with gearbox is built into an enclosure along with the control electronics. The control electronics have a CAN bus interface.
 
Typical examples include agricultural and construction machinery such as tractors, combined harvesters, excavators, loaders or forklift trucks. By their nature, these machines are exposed to special strains such as extreme load changes, impacts and vibrations. These influences act on the built-in hydraulic systems and require considerable expenditure on regulating technology for stabilization purposes. The use of mechatronic stepping motor drives enables some of these difficulties to be resolved elegantly.

Mobile hydraulics in tractors
Downloads
To download each file, right-click and choose 'Save Target As'.

Datasheets

[File] SB8366 linear actuator for mobile hydraulics datasheet (1011.0 kB)

© 1998-2012 ACP&D Limited - All Rights Reserved


 Created with Site Editor Website Builder