Fremgangsmåde og apparat til indsætning af en stiv understøtning i en muffe til sammenføjninger af elektriske kabler,申请号DK19890005633-传众专利搜索

Fremgangsmåde og apparat til indsætning af en stiv understøtning i en muffe til sammenføjninger af elektriske kabler

申请公布号：DK168928(B1)

申请号：DK19890005633

申请日期：1989.11.10

申请公布日期：1994.07.11

申请人：

CAVI PIRELLI S.P.A., SOCIETA'

发明人：VALLAURI, UBALDO;PORTAS, FRANCESCO

分类号：H02G15/10;B29C55/24;B29C63/18;H02G1/14;(IPC1-7):H02G1/14

主分类号：H02G15/10

摘要：An apparatus comprising two half-shells (7a, 7b) that can mutually be approached to enclose a sleeve (6) among a plurality of pressure elements (11) homogeneously distributed with respect to the outer surface of the sleeve (6) itself and elastically connected to the fixed parts of the half-shells (7a, 7b). The apparatus allows to carry out a process according to which the sleeve (6) enclosed between the half-shells (7a, 7b) is subject to radial centripetal forces homogeneously distributed on its outer surface before a rigid support (3) is inserted in said sleeve. During the insertion of the support (3), the centripetal forces are progressively increased in the zones wherein the end of the support gradually lies. Moreover opposite forces distributed along the whole length of the sleeve (6) and directed in direction opposite to the force producing the advancing of the support are applied on the outer surface of the sleeve. The combined action of the centripetal and opposite forces impedes longitudinal shrinkages of the sleeve and prevents bendings due to the buckling loads.