Propulsion system, in particular for suspended monorails in underground works

摘要

A propulsion system, in particular for suspended monorails in underground works is illustrated and described, the said system having two travelling crabs, which are arranged one behind the other in the direction of travel, and having two hydraulic travel units (4, 5) each travelling crab having a clamping device and at least one of the two travelling crabs being continuously located in its clamped position, that is to say one of the two clamping devices can only be released if the other clamping device is in the clamped position, each hydraulic travel unit (4, 5) having a travel cylinder (10, 11) with a first working space (10a, 11a) and a second working space (10b, 11b), a working piston (12, 13) which can be acted on on both sides and a travel rod (14, 15) which is connected to the working piston (12, 13), and the second working space (10b) of the first travel cylinder (10) and the second working space (11b) of the second travel cylinder (11) being connected to one another hydraulically and the two working pistons (12, 13) being acted on simultaneously in alternate direction. In the propulsion system according to the invention, the necessity of having a leakage compensation performed from time to time in the two working spaces (10b, 11b) of the travel cylinders (10, 11) by an operator is eliminated in that hydraulic fluid can be automatically fed to the two working spaces (10b, 11b) of the two travel cylinders (10, 11), which spaces (10b, 11b) are connected to one another hydraulically. <IMAGE>