Pulley

About: Pulley is a research topic. Over the lifetime, 51636 publications have been published within this topic receiving 178220 citations. The topic is also known as: drum & block.

Conveyor installation and shock absorbing elements for use therein

Abstract: A conveyor installation includes an endless belt wound around head and tail pulleys which extends between an impact station wherein material is placed on the belt and a drop off zone wherein the material is removed from the belt. Shock absorbers are disposed beneath the belt at the impact station to dissipate energy imparted on the belt by the material. In one embodiment, the belt is formed of flexible, textile reinforced material and the shock absorbers are in the form of a plurality of rectangular elements having a generally planar upper surface for supporting substantially the entire undersurface of the belt in the impact station. In another embodiment, the belt is formed of rigid steel reinforced material and the shock absorbers are in the form of a plurality of closely spaced rollers. In both embodiments, downstream of the impact station are located idler rollers for supporting the belt at spaced locations. The idler rollers are mounted on a support frame via shock absorbing elements in the form of rings. Each of the shock absorbing elements is formed of elastomeric material and has at least one passage formed therein and configured so that the body wall surrounding the passage is generally K-shaped in section and functions as a buckling element.

Tool for installation and removal of power transmission belts

Abstract: A tool (17) for installation and removal of power transmission belts (16) from fixed center pulleys (13, 15) in a power transmission system (11). The tool (17) comprises a principal member (18) for attaching to a pulley, thus absorbing forces created during installing and removing belts, and simplifying the process. Separated installing (32) and removing (41) devices are secured to the principal member (18) and are configured to support and maneuver the belt (16) while installing onto, or removing from, the selected pulley (15).

High efficiency device that waters for road green belt

Abstract: The utility model relates to a device that waters especially relates to a high efficiency device that waters for road green belt. The to -be -solved technical problem of the utility model is to provide an one kind water fast, water even, efficient high efficiency device that waters for road green belt waters. In order to solve the technical problem, the utility model provides a such high efficiency device that waters for road green belt, which comprises a base plate, the water tank, the extension board, a slide rail, the fixed plate, the cylinder body, a piston, the connecting rod, a spring, pressing plates, water pipe I, check valve I, water pipe II, check valve II, branch I, motor I, the cam, the belt lace wheel, branch II, big belt pulley, the reel, the flat belt, the fixed pulley, act as go -between, the slider, movable plate and shower nozzle, bottom plate top left side is equipped with the water tank, bottom plate top right side is equipped with the extension board, the extension board right side is equipped with the slide rail, slide type connecting has the slider on the slide rail. The utility model discloses water fast, water even, the efficient effect of watering have been reached.

Orthotic device drive system and method

Abstract: An orthosis includes a first portion and a second portion configured to attach on opposite sides of a joint. An actuator is configured to apply a force between the first and second portions. The actuator includes a first spool and a second spool rotatably mounted to the first portion. An output pulley is mounted to the second portion. A belt has a first end wrapped around the first spool, a second end wrapped around the second spool, and a mid-portion wrapped around the output pulley. The actuator is configured to rotate the first and second spools. The rotation of the first spool pulls the belt a given length, and the rotation of the second spool feeds the belt less than the given length, so as to pull the output pulley towards the first portion to pull the second portion towards the first portion.

Construction and method of an electric motor drive

Abstract: In an electric motor drive, a asynchronous motor, such as drum motor, has a stator ( 2 ) mounted on a non-rotatory shaft ( 1 ) and has rotatory, like by means of bearings ( 3 ), connected rotor ( 4 ), is arranged to drive the machine construction (actuator). The rotor ( 4 ) of the asynchronous motor conveyor's is arranged to be directly a functional part of the machine construction (actuator), like conveyor's ( 5 ) driving roll ( 5 a ). Also the rotor can be formed as a shell of pulley ( 4 ) which is part of a vacuum belt conveyor comprising a stationary vacuum box ( 11 ), the rotor drive further including a non-rotatory shaft ( 1 ) supported by at least one supporting bracket ( 8 ) which is connected to the vacuum box.