Johannes Hirschle, customer service fitter
Johannes Hirschle, customer service fitter

When you are working with large cranes in a wind farm, your hoist rope is constantly stressed. The high number of hoists, involving heavy loads alternating with zero loads, subject the rope to extreme strain. For applications of this type it makes sense to shorten the hoist rope from time to time.

It is wound onto the winch with highly developed multi-layer rope coils in a precise geometry involving lotsof layers. The rope windings on the upper layer cross over those on the lower layer. And this is precisely where the rope suffers most stress.

Proper rope care can save lots of money!

Johannes Hirschle, customer service fitter

My tip is designed to ensure that this does not result in damage requiring the rope to be replaced. Shorten the hoist rope before it requires replacement. This relocates the stressed crossing areas to the less stressed parallel area of the winch. This results in asignificant extension to the rope service life.

We need your consent This YouTube video is provided by Google*. If you load the video, your data - including your IP address - is transmitted to Google and may be stored and processed by Google inter alia in the USA. We have no influence over further data processing by Google. By clicking on "Accept", you consent to the transmission of data to Google for this video in accordance with Art. 6 (1) (a) GDPR and at the same time expressly consent to the transfer of data to the USA in accordance with Art. 49 (1) (a) GDPR. If you no longer wish to consent to each YouTube video individually in the future and wish to be able to load the videos without this blocker, you can also select "Always accept YouTube" and thereby consent to the associated data transmissions and transfers to Google and to the USA for all other YouTube videos which you open on our website in the future. Please note that, in the opinion of the European Court of Justice, there does not currently exist an adequate level of data protection in line with EU standards in the USA, and at present we cannot provide suitable safeguards to protect your data and offset this shortcoming. Possible risks to you of data transfer to the USA are that access by state authorities cannot be excluded and that your data could be processed for reasons of national security, criminal prosecution or for other purposes in the public interest of the USA, possibly without you being informed separately and without enforceable rights and effective means of redress being available to you. You can withdraw consent that you have given at any time with future effect via the settings. For further information, please see our Data Protection Declaration and Google's Privacy Policy. *Google Ireland Limited, Gordon House, Barrow Street, Dublin 4, Irland; Mutterunternehmen: Google LLC, 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA

Instructions for this process are available in our short training film or from your Liebherr partner. The following is important in this respect:

• The hoist rope must be secured before it is released

• It must be shortened by 20 times the rope diameter

• It must be welded or soldered expertly

• The rope binding must not come loose whilst the rope is being cut.

The Liebherr Customer service team will then reset the safety cut off. After that the hoist rope must be recoiled under load.

The rope windings on the upper layer across the windings on the lower layer. There is unavoidable friction wear in the rising sections.
The rope windings on the upper layer across the windings on the lower layer. There is unavoidable friction wear in the rising sections.

This article was published in the UpLoad magazine 02 | 2018.

This may be of interest to you


You can download the customer magazines here in PDF format.

Customer Magazines

Product area mobile and crawler cranes

Here you can find the range of Liebherr mobile and crawler cranes.

Mobile and crawler cranes

Our Magazine

Discover further extraordinary stories about mobile and crawler cranes.

Our Magazine