Abstract: The invention relates to a transmission mechanism for a drive system, having at least one tensioning device and acting in two directions. For force transmission, the tractive device runs between a drive roll and an output roll, which are carried by a frame. A spring coupling is connected in the force transmission section between the drive roll and the output roll and has a nonlinear force-distance characteristic curve.

Abstract: The invention relates to a transmission mechanism for a drive system, having at least one tensioning device and acting in two directions. For force transmission, the tractive device runs between a drive roll and an output roll, which are carried by a frame. A spring coupling is connected in the force transmission section between the drive roll and the output roll and has a nonlinear force-distance characteristic curve.

Abstract: The aim of the invention is to provide a device for measuring friction conditions enabling precise measurement and displaying high reproductibility, using simple means. According to the invention, this is achieved by connecting the point of application of force for the introduction of a normal force to the point of application of force of a normal force sensor by means of an elastic flexing element. The flexing element is also connected to the point of application of force for the introduction of a tangential force and the friction force sensor. Connections occur via partial areas with varying flexural strengths and both partial areas are offset at an angle of 90°. The inventive device which examines the friction conditions between friction partners enables a normal force to be applied between two corresponding friction partners and to be determined by means of a normal force sensor.

Abstract: A device for determining the pressure between a contact wire and a pantograph of an electrically-powered vehicle is provided with a measuring device for the static pressure that is determined from the distance between two elastically-connected components, the distance being a function of the static pressure, the device further having an acceleration sensor, which is coupled with the pantograph for determining the pantograph accelerations occurring in the direction of the pressure. The output signal of the acceleration sensor is linked with the output signal of the measuring device for calculating the pressure. The acceleration sensor is embodied to include a seismic mass (3) that is resiliently mounted to the pantograph (6) and whose respective position relative to the pantograph is optically detected, and a corresponding light signal is transmitted to an optoelectrical converter that is potential-isolated from the pantograph (6).

Abstract: An improved device for measuring the contact force between a contact wire and a power collector in an electrically powered vehicle, specially an electrical railway vehicle, by use of optical fiber force sensors. To this end, two compact force sensors are arranged between the base body (7) of the contact strip (6) and the pantograph rocker frame (5) or between the wearing element or shoe (8) and the base body (7) of the contact strip (6). Each sensor includes a deformable body (11), which is elastic in an axial direction but highly rigid crosswise, with the body being fitted with an integrated optical fuber reflex sensor (19). Axial deformations of the deformable body (11) equivalent to the contact force are detected by the reflex sensor (19) with high resolution, accuracy and no interference, are then signaled to a device (27) via optical fibers requiring no potential and converted therein into contact force-equivalent signals (28) or instructions (29).