Barres droites de transmission de forces longitudinales à base de matériaux composites renforcés

• Main Author: SCHUTZE RAINER
• Format: Patent
• Language: French
• Published: 14.03.1997
• Edition: 6
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BEARINGS; BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A straight bar for transmitting longitudinal loads consists of two coaxial, thin walled tubes (4,6) butt joined and enclosed in a collar (16). The tubes (4,6) are made of FRP and have a high bending stiffness. The connecting collar (16) is also made of FRP and comprises a thin shell with an axially parallel slit bonded to both tubes (4,6). The shell (16) has an inner layer of axially parallel fibres and an outer layer of unidirectional fibres intersecting each other at more than 20 deg. to the axis. A woven or braided sheath (18) of high strength fibre impregnated with resin covers the outside of the collar (16) and extends beyond the ends where it is laminated to both bars (4,6). In a mfg. process the collar (16) is moulded around a foam core with the same dia as the tubes (4,6), the foam is removed and the shell (16) wall cut axially before being bent open for location around the bars (4,6).