A dynamic belt-tensioning apparatus for a treadmill includes a base having a first end and a second end spaced from the first end. A foot-striking platform is movably supported by the base so as to allow for vertical movement of the platform during operation of the treadmill. A drive belt has a fixed circumference and is positioned above a top portion of the platform. A drive roller is pivotally mounted adjacent to the first end of the base and engages the drive belt. A bell crank is pivotally coupled to the platform such that pivoting of the bell crank translates into movement of a tensioning roller that is pivotally mounted to the base and that is capable of a range of movement to provide substantially constant tension to the drive belt in response to vertical movement of the platform.

A dynamic belt-tensioning apparatus for a treadmill includes a base having a first end and a second end spaced from the first end. A foot-striking platform is movably supported by the base so as to allow for vertical movement of the platform during operation of the treadmill. A drive belt has a fixed circumference and is positioned above a top portion of the platform. A drive roller is pivotally mounted adjacent to the first end of the base and engages the drive belt. A bell crank is pivotally coupled to the platform such that pivoting of the bell crank translates into movement of a tensioning roller that is pivotally mounted to the base and that is capable of a range of movement to provide substantially constant tension to the drive belt in response to vertical movement of the platform.

The belt conveyance device includes a plurality of rollers, a belt, a meandering correction part, and an adjustment part. The rollers are disposed at intervals each other and rotate around axes. The belt is disposed around the plurality of rollers and travels. The meandering correction part shifts one end portion in an axial direction of a tension roller included in the plurality of rollers in a radial direction within a predetermined range to correct a meandering of the belt. The adjustment part shifts the other end portion in the axial direction of the tension roller in the radial direction such that a position of the one end portion of the tension roller is variable under a state where the meandering of the belt is corrected.

The belt conveyance device includes a plurality of rollers, a belt, a meandering correction part, and an adjustment part. The rollers are disposed at intervals each other and rotate around axes. The belt is disposed around the plurality of rollers and travels. The meandering correction part shifts one end portion in an axial direction of a tension roller included in the plurality of rollers in a radial direction within a predetermined range to correct a meandering of the belt. The adjustment part shifts the other end portion in the axial direction of the tension roller in the radial direction such that a position of the one end portion of the tension roller is variable under a state where the meandering of the belt is corrected.

The invention relates to a device and a method for controlling a steep conveyor, comprising a control unit (15), a conveyor drive system (5) for driving a conveyor belt (2), and a sensor unit for determining a weight G.sub.1-n of the material to be conveyed (4) assigned to a predetermined section T.sub.1-n of the conveyor belt (2), wherein the sensor unit is adapted to transmit information about the weight to the control unit (15), wherein the control unit (15) is adapted to determine from the information about the weight G.sub.1-n a length L.sub.1-n assigned to the predetermined section T.sub.1-n in a steep conveyor region S of the conveyor belt (2) and to adjust a strain of a drive belt (2) of the conveyor drive system (5) based on the determined lengths L.sub.1-n assigned to the predetermined sections T.sub.1-n.

The invention relates to a device and a method for controlling a steep conveyor, comprising a control unit (15), a conveyor drive system (5) for driving a conveyor belt (2), and a sensor unit for determining a weight G.sub.1-n of the material to be conveyed (4) assigned to a predetermined section T.sub.1-n of the conveyor belt (2), wherein the sensor unit is adapted to transmit information about the weight to the control unit (15), wherein the control unit (15) is adapted to determine from the information about the weight G.sub.1-n a length L.sub.1-n assigned to the predetermined section T.sub.1-n in a steep conveyor region S of the conveyor belt (2) and to adjust a strain of a drive belt (2) of the conveyor drive system (5) based on the determined lengths L.sub.1-n assigned to the predetermined sections T.sub.1-n.

An egg conveyor for a poultry plant includes a chain of the closed-loop type with bars, for conveying eggs from one or more laying hen sheds to a collection location, assemblies for traction along the chain which are provided with a motor drive component, and a control unit for synchronization of the traction assemblies. The motor drive components each include at least one gearmotor provided at least with a corresponding servomotor. The method for synchronization of traction assemblies in the conveyor includes the following steps: detecting continuously and instantaneously the angular position and the number of bars at each traction assembly, and calculating continuously and instantaneously the average of all the torques at the traction assemblies and, if the number of bars is different from a set number, correcting the speed of each servomotor to obtain a constant torque on each traction assembly, which corresponds to the average.

A conveyor for transporting and elevating articles and a method and system for conveying articles up inclines is provided. The conveyor has a conveyor belt and at least one cleat disposed on an outer surface of the belt and configured to receive and move an object along the conveyor frame. The system may also include a portable base having a base frame and at least one wheel secured to the base frame. The conveyor may also be pivotably coupled to the portable base.

A dual-layer linear cross belt sorting system is provided, including a package supply table, a sorting loop, a platform, sliding chutes and a scanning device. The sorting loop is of a closed-loop and dual-layer linear conveying structure in a vertical direction, and the sorting loop includes sorting trolleys connected along a single queue, two sets of dual-layer rails formed by connecting bent rails located at two ends and straight rails located at upper and lower layers to each other by an internal welding, a driving component and a tensioning component. The driving component and the tensioning component constitute a transmission structure of the sorting loop and are located at two ends of the sorting loop respectively.

A dual-layer linear cross belt sorting system is provided, including a package supply table, a sorting loop, a platform, sliding chutes and a scanning device. The sorting loop is of a closed-loop and dual-layer linear conveying structure in a vertical direction, and the sorting loop includes sorting trolleys connected along a single queue, two sets of dual-layer rails formed by connecting bent rails located at two ends and straight rails located at upper and lower layers to each other by an internal welding, a driving component and a tensioning component. The driving component and the tensioning component constitute a transmission structure of the sorting loop and are located at two ends of the sorting loop respectively.