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An elevator system

An elevator system and brake technology, applied in elevators, transportation and packaging, etc., can solve problems such as passenger discomfort, and achieve the effect of rapid movement

Active Publication Date: 2018-02-16
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the trapped state, because the car does not move, although the safety of passengers can be guaranteed, passengers will feel uncomfortable

Method used

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Embodiment Construction

[0023] Hereinafter, an embodiment will be described in detail with reference to the drawings.

[0024] 【Example】

[0025] figure 1 It is an overall configuration diagram showing an embodiment of an elevator system in the present invention, and movement of an elevator car (passenger car) 104 is controlled by an elevator controller (control unit) 100 . The elevator controller 100 includes a braking force control unit 20 in addition to the elevator control unit 2 that performs operation control of the elevator.

[0026] The car 104 moves between a plurality of floors in a hoistway formed in a building, and is connected to a counterweight 106 (a counterweight for balancing the car 104 ) via a sling 105 . The car 104 is provided with a passenger car side door (not shown) that engages with the elevator hall side door to open and close. The movement of the car 104 is performed by driving a pulley (not shown) by a motor (motor) 103 . A pulley around which the rope 105 is wound and...

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PUM

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Abstract

An elevator system has a speed detection unit for detecting the speed of a riding car and a controller controlling a brake according to detection output of the speed detection unit. The controller supplies a brake power to the brake on the condition that the speed detection unit detects that a riding car is stopped during rescue operation, and generates an instruction value for releasing braking force of the brake gradually and controls the braking force of the brake according to the generated instruction value; then on the condition that the speed detection unit detects the movement of the riding car, the generated instruction value is stored to an information memory; in a process of reducing the instruction value with the speed of the riding car becoming a target car speed, when it is detected that detection output of the speed detection unit meet certain conditions, the reduced instruction value is replaced and the braking force of the brake is controlled according to the instruction value stored in the information memory. During rescue operation, a riding car can be moved more rapidly.

Description

technical field [0001] The present invention relates to an elevator system for controlling the operation of a passenger car and the braking force of a brake. Background technique [0002] In a conventional elevator, a motor is rotated by a power converter, and a rope is moved up and down via a pulley coupled to the motor, whereby a car connected to the rope can be raised or lowered. When a part of the drive system such as the power converter, the motor, and the encoder connected to the motor fails, the elevator stops. If the car of the elevator stops at a position between floors and passengers are in the car at this time, trapped will occur. In the trapped state, because the car does not move, although the safety of the passengers can be guaranteed, the passengers will feel uncomfortable. [0003] As a method for rescuing passengers trapped due to failure of such a drive system, it is generally performed by maintenance workers. Especially when the weight in the car is out...

Claims

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Application Information

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IPC IPC(8): B66B1/06B66B5/04
CPCB66B1/06B66B5/04
Inventor 照沼智明井上真辅大沼直人高山直树
Owner HITACHI LTD
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