Loading vehicle structure

A device for the deaeration of a hydraulic fluid of a hydraulic system of a loading vehicle or agricultural work machine, comprising:

• at least one hydraulic motor arrangement,
• a hydraulic fluid storage which is hydraulically coupled with the at least one hydraulic motor arrangement, and
• a suction device configured for sucking out the hydraulic fluid, the suction device being associated with the at least one hydraulic motor arrangement such that the suction device guides hydraulic fluid out of the at least one hydraulic motor arrangement into the hydraulic fluid storage by means of vacuum pressure (Δp),
• wherein the suction device is constructed as a jet pump and is integrated in a return line between the at least one hydraulic motor arrangement and the hydraulic fluid storage,
• wherein the jet pump comprises a suction connection, at least one motive nozzle, a mixing chamber and a diffuser, wherein motive medium passing through the at least one motive nozzle is branched off from a pressurized portion of the hydraulic system, the mixing chamber is connected to a return line of the at least one hydraulic motor arrangement, and the diffuser is connected to a return line of the hydraulic fluid storage,
• wherein the suction connection is directly flanged to a housing of the hydraulic motor arrangement,
• wherein a transition area between the motive nozzle and a wall of the suction connection has a narrowing in the form of a diaphragm,
• wherein the mixing chamber is formed integrally with the suction connection, opposite the motive nozzle,
• wherein the diffuser is connected at a free end of the mixing chamber via a flange connection so as to be detachable and exchangeable,
• wherein the return line is coupled with an outlet tube which is integrated in the hydraulic fluid storage, and wherein the outlet tube is arranged in the hydraulic fluid storage so as to be inclined in a vertical direction and wherein the outlet tube has orifices for passage of the hydraulic fluid and an air outlet orifice at an upper side.