Telescopic pipe arrangement for carrier arm of mobile crane, has bearing half shells made of slidable materials, sectionally arranged between pipes for slidable bearing between pipes, and fixed at pipes at carrier layer

摘要

The arrangement has an inner pipe (2) guided into an outer pipe (1) in a sliding manner. Bearing half shells (3, 4) made of slidable materials are sectionally arranged between the pipes for slidable bearing between the pipes. The shells are fixed at the pipes at a carrier layer. One of the pipes is guided into the other pipe at self-lubricating sliding layers (5, 6). The carrier layer is made of glass fibers, which are bonded in epoxy resin. The sliding layers are made of polymer/PTFE-yarn, which is embedded with filler materials and solid lubricants in a resin matrix.