EP 3727756 B1 20211110 - SETTING METHOD FOR EXPANSION DOWELL USING IMPACT WRENCH
Title (en)
SETTING METHOD FOR EXPANSION DOWELL USING IMPACT WRENCH
Title (de)
SETZVERFAHREN FÜR SPREIZANKER MITTELS SCHLAGSCHRAUBER
Title (fr)
PROCÉDÉ DE POSE POUR ÉLÉMENT D'ANCRAGE À EXPANSION AU MOYEN DE LA CLÉ À PERCUSSION
Publication
Application
Priority
- EP 17208782 A 20171220
- EP 2018083504 W 20181204
Abstract (en)
[origin: WO2019120989A1] The invention relates to a setting method for expansion anchors by means of a drive screw, which setting method has a first phase S1 and a second phase S2. In the first phase, a rotary impact is repeatedly exerted on a screw element of the expansion anchor and a torque transmitted from the rotary impact to the screw head is estimated. The first phase S1 is completed when the estimated transmitted torque exceeds a threshold value predefined for the expansion anchor. During the second phase, a first number of rotary impacts predefined for the expansion anchor Is exerted on the screw head. At least during the first phase, a current rate of change of the estimated torque is monitored. In response to a limiting value of the rate of change predefined for the expansion anchor exceeding the current rate of change, a modified second phase is begun, in which a second number of rotary impacts predefined for the expansion anchor is exerted on the screw head, wherein the second number is smaller than the first number.
IPC 8 full level
B25B 21/02 (2006.01); B25B 23/147 (2006.01); B25B 31/00 (2006.01)
CPC (source: EP US)
B25B 21/02 (2013.01 - EP US); B25B 23/1475 (2013.01 - EP US); B25B 31/00 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3501742 A1 20190626; CN 111465470 A 20200728; CN 111465470 B 20210629; EP 3727756 A1 20201028; EP 3727756 B1 20211110; JP 2021503571 A 20210212; JP 7019043 B2 20220214; US 11292112 B2 20220405; US 2020384620 A1 20201210; WO 2019120989 A1 20190627
DOCDB simple family (application)
EP 17208782 A 20171220; CN 201880076919 A 20181204; EP 18808048 A 20181204; EP 2018083504 W 20181204; JP 2020527889 A 20181204; US 201816764427 A 20181204