Abstract
The paper proposes the concept of using a machine with a combined stroke based on a wheeled excavator equipped with a tilt-turning device for the repair and maintenance of railway tracks. The current maintenance of the track includes the systematic supervision of the condition of the track structures and track devices and their maintenance in a condition that guarantees the safe movement of trains. It is grounded the expediency of the using road-rail vehicle and the use of tilt-turning devices for various types of work, such as lifting and straightening the track, changing sleepers, laying ballast, clearing railway tracks from snow, and much more. A promising domestic design of a tilt-turning device has been developed with the introduction of a hydraulic rotary actuator into the design. A 3D model of the developed tilt-turning device is built in CAD KOMPAS-3D. The algorithm and the generalized method for calculating of the rotary hydraulic cylinder are presented. It is based on the results of calculations the dependence of the value of the mean thread diameter on the axial force and the value of the angle of climb of the screw thread line from the thread step and the number of turns, allowing to choose the best thread parameters
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