Patent ID: 8485288

Claim:
An oscillating undercarriage for a drilling device, the oscillating undercarriage comprising: a chassis, two undercarriage units arranged laterally on the chassis and supported in a pivotable manner, two oscillating cylinders for pivoting the undercarriage units relative to the chassis, with one of the two oscillating cylinders being assigned to each undercarriage unit, first and second hydraulic lines arranged on each of the oscillating cylinders for actuation of the oscillating cylinders, the hydraulic lines being connected to one another for pivoting the undercarriage units in opposite directions, a safety device for line breakage safety provided on at least one of the first and second hydraulic lines for each oscillating cylinder, each safety device including at least one electrically remote-controlled stop valve arranged on the respective hydraulic line for blocking the respective hydraulic line in the case of breakage of the respective hydraulic line, and each safety device including a throttle device arranged on the respective hydraulic line for limiting a flow of hydraulic fluid from the respective oscillating cylinder, wherein each throttle device includes a flow regulating valve, a by-pass line, and a check valve arranged in the by-pass line to permit a flow directed towards the stop valve, and a remote-control device in electronic signal connection with the stop valves for opening the stop valves simultaneously during normal operation and for electronically unblocking the stop valves simultaneously.