MILITARY CATERPILLAR VEHICLE Russian patent published in 2006 - IPC F41H7/02 B62D55/00 

FIELD: armored materiel.

SUBSTANCE: the hull is made in the form of two isolated sections linked by a cross horizontal hull hinge providing their turning relative to each other in the vertical plane. Positioned in the front three-bearing section is the engine-transmission compartment with the power unit with a hydromechanical gearbox and a differential turning gear coupled to the driving wheels of its board by the output shafts through gear drives, and the driver's workplace with a chair, control members and a hatch. Positioned in the rear four-bearing section is the fighting compartment with ammunition, and on each board from above-rotary water ramjets of the "screw block' type with a drive from the gearbox. The sections are linked by a hydraulic cylinder that can block in the vertical plane the hinge joint between them. In the linear position the coupling between the sections may be parallel blocked by a spring lock-catcher operating as an individual drive as a result of movement of a slide valve. In the linear position of the sections the vehicle has the outline of a single vehicle.

EFFECT: simplified construction, enhanced reliability and improved operating characteristics.

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