Liebherr introduces LiView in new crawler loaders

By Roberta Prandi19 April 2021

LiView position transducer in new crawler loader generation by Liebherr provides cylinder measurement data for driver assistance systems

Liebherr announced that LiView, the intelligent position transducer for hydraulic cylinders, is mounted in the new Liebherr LR 636 G8 crawler loader and allows for reliable control of the bucket using precise measurement data, even under the most demanding conditions.

In mobile machines, assistance systems relieve the driver and can significantly increase efficiency. When hydraulic cylinders are involved, assistance systems require precise measurement data on the exact position of the cylinder. “For our new generation of crawler loaders, it was important for us to have a position transducer that is on a par with the performance of our crawler loader. Work with the crawler can sometimes release enormous forces,” said Wolfgang Schulz, Product Line Manager for crawler loaders at Liebherr-Werk Telfs GmbH. “LiView has proven to be a reliable and, above all, robust solution here – thanks to its unique measuring principle and the great flexibility in the positioning of the electronics module.”

LiView position transducer in new crawler loader by Liebherr Liebherr’s LiView position transducer for hydraulic cylinders is mounted in the company’s new LR 636 G8 crawler loader

In the new LR 636 G8 crawler, the LiView position transducer provides precise measurement data on the tipping and lifting cylinders. This allows the driver, among other things, to activate automatic lifting and lowering of the bucket. This function is intended for loading work, where the lifting gear is to be repeatedly raised or lowered to a certain height. Once the set position is reached, the lifting or lowering stops automatically.

Likewise, a position can also be stored for tipping of the loading bucket in and out, which can be automatically controlled via the hydraulic sensor.

The position transducer consists of the processing electronics and two probes. LiView measures the cylinder’s parameters using signals at different frequencies injected onto the cylinder itself. Piston position and speed are calculated in real-time by the processing electronics.

The LR 636 G8’s areas of application include earthworks and landfill sites. It is suitable for applications that require extremely high breakout forces. Liebherr explained that the LiView position transducer uses the cylinder itself as an extremely robust sensing element, making it ideally suited to the high demands of the LR 636 G8.

With LiView the processing electronics can be installed either directly on the outside of the cylinder or at any location near the cylinder; in the LR 636 G8, the LiView electronics module is installed under the cab.

In the LR 636 G8 crawler, LiView measures the position of the Liebherr cylinders for which the company employs a manufacture that guarantees high quality and durability. OEMs receive a fully tested cylinder and can connect the electronics module directly.

Liebherr hydraulic cylinders from the 380 bar series production range can be ordered with the position transducer already integrated. In addition to Liebherr’s own cylinders, LiView is also suitable for numerous other cylinder types. Compatibility with new cylinders can be checked rapidly based on drawings and 3D models.

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