In a tunnel boring machine, it is important as a basis for precise control of the parts or components to know the mechanical load which acts on mining tools mounted on a drill head. This is required in many cases in a dirty environment, under the influence of strong mechanical loads, and therefore under rough conditions. In this respect, it is desirable to provide high-precision sensors for detecting a mechanical load which acts on mining tools mounted on a drill head. This is achieved by providing a mining tool for a drill head of a tunnel boring machine for mining in rock, wherein the mining tool has: a roller cutter fastening device, mountable on the drill head, for accommodating and mounting a rotatable roller cutter; the roller cutter for mining in rock is accommodated or in particular can be interchangeably accommodated rotatably in the roller cutter fastening device; a sensor arrangement for detecting a mechanical load of the mining tool, in particular of the roller cutter, wherein the sensor arrangement is formed as a sleeve, which is mounted at least partially in the roller cutter fastening device and/or on the roller cutter, with at least one load-sensitive element mounted thereon; and wherein the roller cutter fastening device has a roller cutter receptacle and at least one fastening element for fastening the roller cutter on the roller cutter receptacle and/or for fastening the roller cutter receptacle on the drill head, wherein the at least one load-sensitive element of the sensor arrangement is provided separately from the at least one fastening element.
|IPC||E21D 9/ 11 A I|
|Publication status||Published - 20 Dec 2019|