A traction rope adjustment apparatus includes a traction rope pressing device, and a traction rope pulley apparatus. The traction rope lifting apparatus prevents the traction rope sagging, the traction rope pressing apparatus prevents the traction rope drifting, and the traction rope pulley apparatus enables a car and the counterweight to smoothly pass through the traction rope pressing apparatus, thereby implementing forced guidance of the traction rope and the reliable and smooth running of the car and counterweight. The apparatus can meet the demands of variable gradients and can implement reliable running of an inclined running container in variable gradients, such that the traction rope adapts to the different gradients, solving the challenge of the development of an inclined running container that self-adapts to gradients.

An automatic rope tension equalizer system includes first, second, and third plungers, first, second, and third cam assemblies, and a hitch plate with first, second, and third cavities. The first, second, and third plungers are at least partially situated in the first, second, and third cavities, respectively. Each cam assembly has a cam and a rod extending therefrom. The cam of the first cam assembly engages the first plunger, the cam of the second cam assembly engages the second plunger, and the cam of the third cam assembly engages the third plunger. A network connects each cavity to each other cavity, and fluid in the network automatically equalizes pressure on the first, second, and third plungers, thereby affecting positioning of the first, second, and third plungers and, through each cam, tension on each rod.

An automatic rope tension equalizer system includes first, second, and third plungers, first, second, and third cam assemblies, and a hitch plate with first, second, and third cavities. The first, second, and third plungers are at least partially situated in the first, second, and third cavities, respectively. Each cam assembly has a cam and a rod extending therefrom. The cam of the first cam assembly engages the first plunger, the cam of the second cam assembly engages the second plunger, and the cam of the third cam assembly engages the third plunger. A network connects each cavity to each other cavity, and fluid in the network automatically equalizes pressure on the first, second, and third plungers, thereby affecting positioning of the first, second, and third plungers and, through each cam, tension on each rod.

A false car device configured for use in an elevator hoistway is provided. The false car device includes a platform assembly and a frame assembly configured to support the platform assembly. The frame assembly includes one or more safety assemblies. A lift assembly is configured to facilitate hoisting of the platform and the frame assembly within the elevator hoistway. A climbing rope is attached to the lift assembly and has a tension. The safety assembly is configured to engage an elevator guide rail in the event the tension in the climbing rope is lost.

A false car device configured for use in an elevator hoistway is provided. The false car device includes a platform assembly and a frame assembly configured to support the platform assembly. The frame assembly includes one or more safety assemblies. A lift assembly is configured to facilitate hoisting of the platform and the frame assembly within the elevator hoistway. A climbing rope is attached to the lift assembly and has a tension. The safety assembly is configured to engage an elevator guide rail in the event the tension in the climbing rope is lost.

A vertical lift conveyor for lifting materials between different vertical levels. The vertical lift conveyor includes a pair of spaced uprights and a carriage that moves vertically along the spaced uprights. The vertical lift conveyor includes a drive assembly including a drive motor coupled to a drive shaft. Each end of the drive shaft includes a first sprocket and a second sprocket that each engages one of a pair of lift chains. The first and second sprockets each include a plurality of teeth (N). The first and second sprockets are offset from each other 180/N. The offset between the first and sprockets creates sinusoidal velocity profiles for the two chains that are out of phase with each other. A connection block is used to connect the pair of lift chains to each side of the carriage combines the lift chain velocities into a linear vertical velocity for the carriage.

A vertical lift conveyor for lifting materials between different vertical levels. The vertical lift conveyor includes a pair of spaced uprights and a carriage that moves vertically along the spaced uprights. The vertical lift conveyor includes a drive assembly including a drive motor coupled to a drive shaft. Each end of the drive shaft includes a first sprocket and a second sprocket that each engages one of a pair of lift chains. The first and second sprockets each include a plurality of teeth (N). The first and second sprockets are offset from each other 180/N. The offset between the first and sprockets creates sinusoidal velocity profiles for the two chains that are out of phase with each other. A connection block is used to connect the pair of lift chains to each side of the carriage combines the lift chain velocities into a linear vertical velocity for the carriage.

A hoist security arrangement for avoiding dropping of the load when the chain or cable breaks includes a longer redundant auxiliary chain or cable disposed alongside the main chain or cable and which is raised and lowered synchronously with the slightly shorter main chain or cable so that the main chain or cable normally supports the entire weight of the load. If the main chain or cable breaks, the load drops slightly until the slack in the redundant auxiliary chain or cable is eliminated to hold the load solely by tensioning the auxiliary chain or cable. The extent of slack is set to insure that slight lengthening of the main chain as caused by wear does not result in loading of the auxiliary chain or cable.

A hoist security arrangement for avoiding dropping of the load when the chain or cable breaks includes a longer redundant auxiliary chain or cable disposed alongside the main chain or cable and which is raised and lowered synchronously with the slightly shorter main chain or cable so that the main chain or cable normally supports the entire weight of the load. If the main chain or cable breaks, the load drops slightly until the slack in the redundant auxiliary chain or cable is eliminated to hold the load solely by tensioning the auxiliary chain or cable. The extent of slack is set to insure that slight lengthening of the main chain as caused by wear does not result in loading of the auxiliary chain or cable.

Elevator systems and methods of operation include a tension member support positioned within an elevator shaft, a tension member suspended from the tension member support within the elevator shaft, and a slack detection system. The slack detection system includes at least one biasing element housed within the tension member support and operably coupled to the tension member, the at least one biasing element arranged to receive a load from the tension member and a switch arranged to be moved from a first position to a second position in response to movement of the at least one biasing element, wherein when in the second position the switch triggers an emergency stop of an elevator car within the elevator shaft.