Cutting element with a base element and chisel holder

US5683144A · kind A · utility

Assignees

• Wirtgen GmbH
• Betek Bergbau- und Hartmetalltechnik Karl-Heinz Simon GmbH & Co. KG · DE

Inventors

• Karl Kammerer · Fluorn-Winzeln, DE
• Bernhard Diessner · Fulpmes, AT
• Dieter Simons · Kürten, DE
• Bernd Holl · Linz, DE

Key dates

• Filing date: Jul 8, 1996
• Grant date: Nov 4, 1997
• Expiry date: Jul 8, 2016

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21C35/191
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A cylindrical cutting element for a cutting machine which includes base ps arranged at a uniform distance from each other. A chisel holder which receives an exchangeable chisel is secured with respect to each base element. The chisel holder has a plug connector which allows the chisel holder to be inserted into a plug receiver of the base element, where it is held by a pressure screw on the base part that grips the plug connector. To relieve the plug connector from the forces acting on the chisel, the base part has a projection which extends in an approximately parallel direction to the running direction of the cutting element and a stop that follows the projection in the running direction and forms an angle therewith. The stop limits the insertion of the chisel holder into the base element and absorbs forces transmitted through the chisel to the chisel holder.