This brake is preferably integrated in the transmission (1) of the vehicle and is provided in the form of a multiple disk brake running inside the oil bath.

A hybrid vehicle (1) wherein a brake mechanism (400) is a wet-type multi-plate brake device, and is constructed so as to be capable of selectively locking a motor generator (MG1).

Said brake is designed in such a way that the rotor disks (4) have cooling channels (6) which can be filled with cooling fluid immediately before or at the start of braking.

The crane nose is equipped with Komatsu MDB, Multi Disc Brake, and the number of brake discs can be varied to match the size of the head.

According to the invention, the shaft (10) is connected in a fixed manner to the console (1), a sleeve (20) of the holder part (2) encompassing said shaft and the holder part is connected to the console by means of a multiple disc brake.