Lifting apparatus having a toggle lever mechanism

US9610666B2 · kind B2 · utility

Assignee

• WALTER MASCHINENBAU GMBH · DE

Inventors

• Daniel Schindler · Ludwigsburg, DE
• Simon Kümmerle · Herrenberg, DE

Key dates

• Filing date: Jun 25, 2013
• Grant date: Apr 4, 2017
• Expiry date: Jun 25, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23Q16/001
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A lifting apparatus includes a lifting part that can be moved in linear direction between a rest position and a working position. At least one drive device is disposed for moving the lifting part. Each drive device includes a toggle lever mechanism, having a first toggle supported pivotally on the lifting part and a second toggle supported on a base part. A positioning device prespecifies the position of the lifting part in lifting direction and in a direction transverse to lifting direction in working position. To do so, said toggle preferably has a stop surface against which the lifting part is pushed into working position by the at least one drive device. In this working position, the toggle joint angle α of the toggle lever mechanism is smaller than 180° so that the two toggles and are outside the extended position.