A toothed CVT using a Cone with One Torque Transmitting Member that is coupled by a Transmission Belt to another Cone with One Torque Transmitting Member for which teeth re-engagement between the Torque Transmitting Members and their Transmission Belt is improved. Said CVT uses a slack-side Tensioning Pulley in order to maintain the tension in the slack-side of the Transmission Belt almost constant so as to ensure smooth re-engagement of the Driven Cone; and a Transmission Diameter Compensating Mechanism, which increases the Transmission Diameter of the Driving Cone when the torque being pulled by the Driving Cone is increased, in order to compensate for an increase in Transmission Belt Teeth Compression and an increase in stretching of the tense-side of the Transmission Belt, due to an increase in tension in the tense-side of the Transmission Belt when an increased torque is transmitted; to ensure smooth re-engagement of the Driving Cone.

The provided is a tensioning adjusting mechanism for a drum, which includes a front plate, a rear plate, a base, a drum, a supporting seat, a motor frame, a motor, a tension spring and a synchronous belt. The base is connected between a bottom of the front plate and a bottom of the rear plate; the drum is rotatably connected between the front plate and the rear plate and located above the base; the supporting seat is disposed on the base, the motor disposed on the motor frame, and a drive shaft of the motor is connected with a synchronous belt wheel. The synchronous belt is tensioned and connected on the synchronous belt wheel and a peripheral wall of the drum. An end of the motor frame is rotatably connected on the supporting seat. An adjusting rod is connected movably between the front plate and the rear plate and located.

A belt tensioning mechanism for a 3D printer and a 3D printer. The belt tensioning mechanism comprises a base, a driving pulley, at least one timing pulley, a sliding block, a tensioning pulley, a spring. The base is provided with a first sliding groove. The driving pulley and the at least one timing pulley are mounted on the base and are connected in series with each other via a belt. The sliding block is mounted on the base and is capable of sliding along the first sliding groove. The tensioning pulley is mounted on the sliding block and is connected in series with the driving pulley and the at least one timing pulley via the belt so as to tension the belt. The spring is configured to apply an elastic force to the sliding block.

A toothed CVT using a Cone with One Torque Transmitting Member that is coupled by a Transmission Belt to another Cone with One Torque Transmitting Member for which teeth re-engagement between the Torque Transmitting Members and their Transmission Belt is improved. Said CVT uses a slack-side Tensioning Pulley in order to maintain the tension in the slack-side of the Transmission Belt almost constant so as to ensure smooth re-engagement of the Driven Cone; and a Transmission Diameter Compensating Mechanism, which increases the Transmission Diameter of the Driving Cone when the torque being pulled by the Driving Cone is increased, in order to compensate for an increase in Transmission Belt Teeth Compression and an increase in stretching of the tense-side of the Transmission Belt, due to an increase in tension in the tense-side of the Transmission Belt when an increased torque is transmitted; to ensure smooth re-engagement of the Driving Cone.

A lift assembly includes a base, a platform coupled to the base and moveable between a lowered state and an elevated state, a first pair of scissor arms including a first arm and a second arm pivotably connected to one another, and a second pair of scissor arms including a third arm and a fourth arm pivotably connected to one another. The lift assembly also includes a carriage coupled to the first pair of scissor arms and to the second pair of scissor arms. The carriage includes a shaft extending transverse to the first arm, the second arm, the third arm, and the fourth arm, and a centering wheel rotatably coupled to the shaft. The first arm includes a cam surface engageable with the centering wheel to guide travel of the platform between the lowered state and the elevated state.

A power transmission device includes a first pulley driven by a first drive source; a second pulley driven by a second drive source; a first power transmission belt that is wound around the first pulley and an object to be driven and that transmits power from the first pulley to the object to be driven; a second power transmission belt that is wound around the second pulley and the object to be driven and that transmits power from the second pulley to the object to be driven; a first tension applying section that applies tension to the first power transmission belt; a second tension applying section that applies tension to the second power transmission belt; and a load applying section that applies a load to the first tension applying section and applies a load to the second tension applying section.

The invention aims at a mobile robotic platform designed to move between two rows of vegetation, vines in particular, comprising four wheels, a hollow chassis defining a chamber, a platform, configured to close the chamber, a propulsion system housed in the chamber and configured to drive the wheels, said system comprising two traction geared motors, each connected to a pair of wheels, each pair being placed on an opposite side of the chassis and facing each other, at least one battery placed in the chassis, two chain systems, each connecting two wheels of the same pair, placed on the same side of the chassis, and each being configured to synchronize the rotation of the wheels on the same side.

A belt drive system includes a housing, a first pulley and a second pulley rotatably disposed in the housing, a belt that connects the first pulley with the second pulley, where the first pulley drives the second pulley via the belt. The belt drive system includes a cover rotatably coupled to the housing with a rotating mechanism, such that the cover is moved between a closed position and an open position with respect to the housing. The belt drive system also includes safety device having an actuating element mounted on the cover and a projection unit mounted within the housing to provide a first caution based on a proximity of the actuating element with respect to the projection unit, where the first caution is indicative of a movement of the cover from the closed position.

A power transmission device includes: a first rotation member; a first rotation shaft supporting the first rotation member; a second rotation member; a second rotation shaft supporting the second rotation member; and an endless flexible member wound around the first rotation member and the second rotation member, in which at least one of the first rotation member and the second rotation member is movable in an axial direction thereof, and the endless flexible member includes a restriction portion configured to restrict movement of at least one of the first rotation member and the second rotation member in the axial direction.

The invention relates to a belt-tensioning device comprising a tensioning device for generating a force for tensioning a belt in a belt drive; a measuring device for measuring a belt tension or a measurement variable corresponding to the belt tension; and an adjustment device for adjusting the force generated by the tensioning device based on signals of the measuring device.