EP 3743560 B1 20211110 - TAMPING ASSEMBLY FOR A TRACK-TAMPING MACHINE
Title (en)
TAMPING ASSEMBLY FOR A TRACK-TAMPING MACHINE
Title (de)
STOPFAGGREGAT FÜR EINE GLEISSTOPFMASCHINE
Title (fr)
UNITÉ DE BOURRAGE DESTINÉE À UNE BOURREUSE DE TRAVERSES
Publication
Application
Priority
- AT 500092018 U 20180122
- AT 2019050001 W 20190108
Abstract (en)
[origin: WO2019140466A1] Tamping assembly (1) for a track-tamping machine having tamping tool pairs (3) which take the form of oscillating levers and are arranged on a carrier (7) guided height-adjustably in a tamping assembly frame and of which the lower tamping tine ends (10), intended for engagement in a ballast bed (4), can be driven by an oscillatory drive (11) and can be adjusted hydraulically with respect to one another, wherein each of the tamping tools (3) of a tamping tool pair is assigned a hydraulic cylinder (11) and, where appropriate, a displacement sensor (7) for determining the hydraulic cylinder position, and the hydraulic cylinders (11) form both the linear adjusting drive and the oscillatory drive of the tamping tools (3), and wherein, to activate the hydraulic cylinders (11), electrohydraulic valves are provided which comprise a mechanical hydraulic-cylinder activating valve part (12) and associated valve electronics (13). To provide advantageous construction conditions, it is proposed that the valve electronics (13) are mounted in an oscillation-damped manner with respect to the hydraulic cylinder (11) and/or the mechanical hydraulic-cylinder activating valve part (12).
IPC 8 full level
E01B 27/16 (2006.01)
CPC (source: AT EP RU US)
B07C 5/368 (2013.01 - AT); E01B 27/16 (2013.01 - AT EP RU US); E01B 2203/12 (2013.01 - AT US)
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)
WO 2019140466 A1 20190725; AT 16251 U1 20190515; CN 111566285 A 20200821; EP 3743560 A1 20201202; EP 3743560 B1 20211110; JP 2021511454 A 20210506; JP 7113897 B2 20220805; RU 2741450 C1 20210126; US 11713547 B2 20230801; US 2021010206 A1 20210114
DOCDB simple family (application)
AT 2019050001 W 20190108; AT 500092018 U 20180122; CN 201980007350 A 20190108; EP 19701951 A 20190108; JP 2020533269 A 20190108; RU 2020127874 A 20190108; US 201916960454 A 20190108