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Elevator maintenance safety device

A safety device, technology of elevators, used in the direction of elevators in buildings, transportation and packaging, elevators

Active Publication Date: 2022-02-01
HITACHI BUILDING SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the push-button switch operates reliably, but there is a problem that the push-button switch also operates when the door of the lowest floor is opened such as closing the elevator.

Method used

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  • Elevator maintenance safety device
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  • Elevator maintenance safety device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] figure 1 It is a side view showing the overall structure of the elevator. exist figure 1 Among them, 1 is the lifting path of the elevator, 2 is the boarding point of the elevator, and 3 is the pit of the lifting path. The boarding point 2 is provided on each floor where the elevator stops, and in the illustrated example, 2a is the boarding point on the lowest floor such as the first floor, and 2b is the second floor. The pit 3 is the part from the lowermost stop position to the bottom of the lifting path.

[0022] 4 is the car of the elevator, and 5 is the counterweight. The car 4 and the counterweight 5 move up and down in the lifting path 1 in opposite directions.

[0023] 6 is a traction machine, 7 is a control panel, and 8 is a speed regulator. In the elevator without a machine room, the traction machine 6 , the control panel 7 , and the speed controller 8 are arranged in the hoisting path 1 . In an elevator having a machine room, the hoisting machine 6, the ...

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PUM

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Abstract

The invention provides an elevator maintenance safety device, which can safely make a push switch operate when a maintenance worker performs maintenance work in a pit. The elevator maintenance safety device is characterized by: a landing door that opens and closes along the door track and the landing threshold, a switch that operates when the landing door is in the fully open position, and a switch that prevents The closing direction movement prevention mechanism for the landing door moving in the closing direction allows the landing door to move to the full open position by the start operation of pit maintenance work and allows the landing door door to move to the full open position by the completion operation of pit maintenance work. The opening and closing permission mechanism that moves in the closing direction controls the power supply of the elevator through the above switch.

Description

technical field [0001] The invention relates to an elevator maintenance safety device. Background technique [0002] In the elevator, since there is maintenance equipment in the hoistway portion of the hoistway, maintenance workers perform maintenance work in the hoistway of the hoistway. In the case of maintenance work in the pit, open the locking device of the landing door, use a limiter or the like to prevent the locking of the landing door that is automatically locked, and operate the push switch that cuts off the power supply. [0003] Among them, in order to avoid interference with the elevator car, etc., the push switch is installed near the entrance and exit of the lifting path, such as under the threshold of the entrance and exit. However, in order to operate the push switch, it is necessary to stick out the body in the lifting path, and there is a possibility of slipping into the pit. of danger. [0004] Patent Document 1 discloses a device that automatically ope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B13/18B66B5/00B66B5/02B66B5/28B66B13/30
CPCB66B13/18B66B5/0031B66B5/02B66B5/28B66B13/301
Inventor 新堀贵明大林孝矢内贤一中村贤铃木健太
Owner HITACHI BUILDING SYST CO LTD