Abstract: The invention relates to a drilling apparatus for producing a cased bore with a first drill drive for driving a drill rod in a rotating manner, at the lower end of which a drilling tool for removing ground material is arranged, a mast, along which the first drill drive is movable with a sledge, and a second drive, with which a support tube for the bore can be introduced into the ground. According to the invention a computer unit is provided, in which a current drilling depth of the drilling tool and a depth of introduction of the support tube are indicated. Furthermore, a monitor is provided, on which the current drilling depth in relation to the depth of introduction of the support tube can be displayed by the computer unit. The invention further relates to a method for operating such a drilling apparatus.

Abstract: The invention relates to a drilling apparatus for producing a cased bore with a first drill drive for driving a drill rod in a rotating manner, at the lower end of which a drilling tool for removing ground material is arranged, a mast, along which the first drill drive is movable with a sledge, and a second drive, with which a support tube for the bore can be introduced into the ground. According to the invention a computer unit is provided, in which a current drilling depth of the drilling tool and a depth of introduction of the support tube are indicated. Furthermore, a monitor is provided, on which the current drilling depth in relation to the depth of introduction of the support tube can be displayed by the computer unit. The invention further relates to a method for operating such a drilling apparatus.

Abstract: A pile-driving apparatus and a method for driving a pile element into the ground, wherein a head region of the pile element is arranged in a driving helmet on an underside of a driven hammer unit, which is moved by a main winch and a main rope along a mast and drives the pile element in a vertical driving position into the ground. The pile element is hoisted by an auxiliary winch with auxiliary rope from a lying position into the approximately vertical driving position, in which the head region of the pile element is received in the driving helmet of the hammer unit.

Abstract: The invention relates to an apparatus and a method for driving a pile element into the ground. A head region of the pile element is arranged in a driving helmet on an underside of a driven hammer unit, which is moved along a mast and drives the pile element into the ground. The pile element is hoisted by means of an auxiliary winch with auxiliary rope from a lying position into the approximately vertical driving position, in which the head region of the pile element is received in the driving helmet of the hammer unit. In accordance with the invention during hoisting of the pile element to be driven in, the main winch and the auxiliary winch are controlled automatically in a simultaneous manner so that during hoisting the head region of the pile element rests with a predeterminable pressing force against the driving helmet.