The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2023
Filed:
Jan. 08, 2019
Hp3 Real Gmbh, Vienna, AT;
Bernhard Lichtberger, Pregarten, AT;
HP3 Real GmbH, Vienna, AT;
Abstract
A tamping assembly () for a track tamping machine is proposed comprising tamping tool pairs (), which are arranged on a girder () guided vertically adjustable in a tamping assembly frame and are formed as swing arms, and the lower tamping pick ends () of which intended for plunging into a ballast bed () are drivable using an oscillation drive and are hydraulically closable toward one another, wherein a hydraulic cylinder () and possibly a distance sensor () for determining the hydraulic cylinder position are associated with each of the tamping tools () of a tamping tool pair, and the hydraulic cylinders () form both the linear closing drive and also the oscillation drive of the tamping tools (), and wherein electrohydraulic valves () are provided for actuation of the hydraulic cylinders (), which comprise a mechanical hydraulic cylinder actuation valve part () and an associated valve electronic unit (). To provide advantageous construction conditions, it is proposed that the valve electronic unit () is mounted in a vibration-damped manner by means of vibration dampers (D) with respect to the hydraulic cylinder () and/or the mechanical hydraulic cylinder actuation valve part ().