Embodiments of the present disclosure are directed to a system for monitoring conditions of elevator hoisting members. The system includes a processing device configured to receive an actual resistance data from the one or more pairs of tensile load bearing conductive members, calculate an adjusted resistance data by subtracting the actual resistance data from a baseline resistance data and dividing by the baseline resistance data, input the adjusted resistance data into a process configured to model the adjusted resistance data into a breaking strength value for the elevator hoisting member, receive the breaking strength value, and determine whether the breaking strength value is below a predetermined threshold value for a rated breaking load of the elevator hoisting member, wherein when the breaking strength value is below the predetermined threshold value, output an alert to the elevator controller to instruct the elevator controller to inhibit movement of the elevator hoisting member.

Embodiments of the present disclosure are directed to a system for monitoring conditions of elevator hoisting members. The system includes a processing device configured to receive an actual resistance data from the one or more pairs of tensile load bearing conductive members, calculate an adjusted resistance data by subtracting the actual resistance data from a baseline resistance data and dividing by the baseline resistance data, input the adjusted resistance data into a process configured to model the adjusted resistance data into a breaking strength value for the elevator hoisting member, receive the breaking strength value, and determine whether the breaking strength value is below a predetermined threshold value for a rated breaking load of the elevator hoisting member, wherein when the breaking strength value is below the predetermined threshold value, output an alert to the elevator controller to instruct the elevator controller to inhibit movement of the elevator hoisting member.

A suspension member load sensor configured for use with a suspension member in an elevator system is provided. The suspension member load sensor includes a housing bounded by an upper cover plate and a lower cover plate. The upper cover plate and the lower cover plates are configured to receive a rod extending therethrough. The lower cover plate is configured to seat adjacent a mounting plate. A strain gauge is disposed within the housing and configured to produce an electrical signal commensurate with a load on the suspension member. A plurality of spaced apart projections extend outwardly from a lower surface of the lower cover plate. The projections are configured to define a location for the introduction of force into the load sensor.

A single-cable drum-type conveying installation with a cable drum driven by a winch drive, includes a cable-monitoring device, a conveying device, which hangs freely on a conveying cable, and an intermediate harness connecting the conveying cable to the conveying device. The cable-monitoring device includes a load-measuring pin, as a constituent part of the intermediate harness, and also a transmission path along which a measuring signal received from the load-measuring pin is transmitted to an evaluation device. The evaluation device is designed for evaluating the measuring signal such that, in the case of the measuring signal jumping by an extent which exceeds a certain amount, a malfunction is detected.

An overload valve assembly for a pneumatic vacuum elevator is disclosed. The overload valve assembly for a pneumatic vacuum elevator is characterised by a fastening means, a pad with a centre hole, an arresting plate with a centre hole, a disc plate with a centre hole, a bottom bush, a spring and a top bush bounded with a nut. Here, the pad, the arresting plate, the disc plate, the bottom bush, the spring and the top bush bounded with the nut is fitted over the fastening means. The overload valve unit is configured to function based on spring actuation mechanism and ensure the maximum permissible limit of pay load in the elevator cabin assembly.

An overload valve assembly for a pneumatic vacuum elevator is disclosed. The overload valve assembly for a pneumatic vacuum elevator is characterised by a fastening means, a pad with a centre hole, an arresting plate with a centre hole, a disc plate with a centre hole, a bottom bush, a spring and a top bush bounded with a nut. Here, the pad, the arresting plate, the disc plate, the bottom bush, the spring and the top bush bounded with the nut is fitted over the fastening means. The overload valve unit is configured to function based on spring actuation mechanism and ensure the maximum permissible limit of pay load in the elevator cabin assembly.

An elevator installation and a method of operating the elevator system for temporary transportation of an overload within the elevator installation includes a car and a counterweight interconnected by one or more suspension ropes engaging a traction sheave that is driven by a motor. The traction between the suspension ropes and the traction sheave is enhanced independently of the counterweight for intended overload operation.

An elevator installation and a method of operating the elevator system for temporary transportation of an overload within the elevator installation includes a car and a counterweight interconnected by one or more suspension ropes engaging a traction sheave that is driven by a motor. The traction between the suspension ropes and the traction sheave is enhanced independently of the counterweight for intended overload operation.

An elevator car load measurement system for determining a load of an elevator car includes a plurality of at least two force sensors that are daisy-chained and connected to a controller for determining the load. Each force sensor measures a force exerted by the elevator car on the respective force sensor and generates a frequency signal with a square-wave form, wherein the frequency signal is proportional to the respective measured force. At least one of the force sensors adds a first frequency signal received from the previous force sensor along the daisy chain a second frequency signal generated by the at least one force sensor to generate a frequency sum signal, the last of the force sensors in the daisy chain forwards the frequency sum signal to the controller.

A suspension member load sensor configured for use with a suspension member in an elevator system is provided. The suspension member load sensor includes a housing bounded by an upper cover plate and a lower cover plate. The upper cover plate and the lower cover plates are configured to receive a rod extending therethrough. The lower cover plate is configured to seat adjacent a mounting plate. A strain gauge is disposed within the housing and configured to produce an electrical signal commensurate with a load on the suspension member. A plurality of spaced apart projections extend outwardly from a lower surface of the lower cover plate. The projections are configured to define a location for the introduction of force into the load sensor.