Shock-absorbing strut for hydraulic wheel-drive unit

A shock absorbing strut, comprising:

• an outer guide housing affixed to a vehicle frame;
• a support element rotatable about a strut axis and axially slidable in said outer guide housing and affixed to a wheel carrier having a hydraulic wheel drive;
• means forming at least one pressure chamber between said support element and said outer guide housing for bracing said vehicle frame relative to said wheel carrier;
• fluid-passage means forming an oil feed line running from said outer guide housing through said strut to said hydraulic wheel drive and an oil return line running through said strut from said hydraulic wheel drive to said outer guide housing for operating said drive, said fluid passage means including:
• respective sealed telescoping connectors parallel to said axis and disposed between said outer guide housing and said support element for each of said oil feed line and said oil return line,
• a revolving joint in said support element connected to said telescoping connectors, said revolving joint having a first member axially slidable but nonrotatable relative to said housing and communicating with said telescoping connectors, and a second member rotatable with said support element but axially fixed relative to said first member, said second member being formed with ends of said lines remote from said outer guide housing, and
• means forming a compensation cylinder connected to said revolving joint for exerting a force thereon equal to and opposite to a force exerted on said revolving joint by hydraulic pressure of oil for operating said drive and passing through said telescoping connectors.