摘要:
In an elevator apparatus, a rescue operation for a car is performed by a rescue operation controller. The rescue operation controller obtains a rescue operation voltage value and applies a voltage having the rescue operation voltage value to a brake coil in response to a signal from a speed detector at a time of the rescue operation for the car. The rescue operation voltage value is a value of the voltage necessary to reduce braking force of a brake device to move the car by using a state of imbalance between the car and a counterweight.
摘要:
An elevator apparatus performing proper braking control of a car according to a detected content of a failure, and including: a semiconductor switch connected in series to a brake coil, for varying current flowing through the brake coil; an interruption switch connected in series to the brake coil and the semiconductor switch and capable of interrupting current flowing through the brake coil; a braking force control processing mechanism controlling an amount of current flowing through the semiconductor switch according to deceleration of the car when the car stops; a failure detection section detecting failure in the braking force control processing mechanism; a critical event detection mechanism detecting a critical event requiring an urgent stop of the car based on a state detection signal; and a brake power supply interrupting mechanism turning the interruption switch OFF to apply braking when the failure and the critical event is detected.
摘要:
An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. Stopper detection means detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detection means, the controller lowers a set value of the overspeed.
摘要:
In an elevator apparatus, a brake control device has a first brake control portion for operating a brake device upon detection of an abnormality to stop a car as an emergency measure, and a second brake control portion for reducing a braking force of the brake device when a degree of deceleration of the car becomes equal to or higher than a predetermined value at a time of emergency braking operation of the first brake control portion. The second brake control portion detects emergency braking operation of the brake device independently of the first brake control portion.
摘要:
In an elevator apparatus, a brake device is controlled by a brake control device. The brake control device has a first brake control portion for operating the brake device to stop a car as an emergency measure upon detection of an abnormality, and a second brake control portion for reducing a braking force of the brake device when a deceleration of the car becomes equal to or larger than a predetermined value during emergency braking operation of the first brake control portion. The second brake control portion controls the brake device independently of the first brake control portion.
摘要:
In an elevator operation control device, a plurality of operation control profiles for prescribing values regarding operation of an elevator, for example, a speed of a car are registered in an operation control device body. The operation control device body collects values such as the activation frequency of the car and the like as information on a condition of use of the elevator. The operation control device body also selects one of the operation control profiles in accordance with the information on the condition of use, and controls the operation of the elevator based on the selected operation control profile.
摘要:
In an elevator apparatus, a brake device stops a car from running. The brake device can adjust the magnitude of part of a total braking force generated at a time of emergency braking of the car. As an example of the brake device, the brake device has a nonadjustable brake portion for immediately generating a braking force without making an adjustment thereof at the time of emergency braking of the car, and an adjustable brake portion for generating a braking force while making an adjustment thereof at the time of emergency braking of the car.
摘要:
In an elevator apparatus, a brake device for braking the running of a car is controlled by a brake control device. The brake control device monitors a speed of the car and a degree of deceleration of the car at a time of emergency braking of the car. When the degree of deceleration of the car reaches a preset target deceleration, the brake control device generates a target speed pattern for decelerating the car from a speed of the car at that time.
摘要:
A car door is displaced with respect to a landing door between an engagement position at which the car door is engaged with the landing door and an open-away position located on a door-closing side with respect to the engagement position. While remaining engaged with the car door, the landing door is moved to open/close a landing doorway. When the landing doorway is fully closed by the landing door, a locking device performs an operation corresponding to the position of the car door with respect to the landing door to lock/unlock the landing door. A door control device has an engagement completion time calculating portion, a speed pattern generating portion, and a speed control portion. The engagement completion time calculating portion predicts an engagement completion time to a moment when the car door reaches the engagement position during a door-opening operation, based on information from an unlock detecting device for detecting whether or not the landing door has been unlocked. The speed pattern generating portion generates a speed pattern of the car door during the door-opening operation, based on information from the engagement completion time calculating portion. The speed control portion controls the speed of the car door according to the speed pattern.
摘要:
In an elevator apparatus, a car and a counterweight are raised/lowered by hoisting machines. Each of those hoisting machines includes a drive sheave and a hoisting machine body, the hoisting machine body including an electric motor for rotating the drive sheave and a hoisting machine brake for braking rotation of the drive sheave. At least one of the car and the counterweight includes a raised/lowered body-mounted brake device for stopping the car as an emergency measure on a condition different from a condition set for a safety gear.