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Elevator device

A technology of elevators and device pairs, used in elevators, transportation and packaging, elevators, etc. in buildings

Inactive Publication Date: 2019-04-12
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In an elevator system with a car that moves up and down at high speed over a long stroke, there is a possibility that passengers in the car may experience discomfort such as earplugs due to sudden pressure changes in the car.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Figure 6 It is a schematic diagram of the elevator apparatus concerning the embodiment of this invention. The elevator apparatus 11 includes a car 1 and a counterweight 15 that move vertically inside a hoistway 13 . The car 1 and the counterweight 15 are connected to each other by ropes 14 . A machine room 16 is provided on the top of the elevator shaft 13, and a control panel 12, a traction wheel 17 and a pulley 18 are arranged in the machine room 16. The control panel 12 controls the movement of the car 1, the opening and closing of doors, and the like, thereby controlling the elevator device 11. The rope 14 is wound around the traction sheave 17 and the pulley 18 . When the traction sheave 17 rotates, the rope 14 is driven, and the car 1 and the counterweight 15 are raised and lowered.

[0026] figure 1 It is an external perspective view of the car 1. The car 1 ascending and descending in the elevator shaft 13 includes a pressure regulating device 2 , a pipe 4...

Embodiment 2

[0053] In Example 1, according to figure 2 The air pressure difference curve is generated according to the steps shown, but the air pressure difference curve can also be generated according to steps other than this step. In Example 2, a method of generating a pressure difference curve in steps other than those shown in Example 1 will be described.

[0054] In Example 1, such as figure 2 As shown, in step S4, generate target stroke curve 9, in step S5, obtain the difference between target stroke curve 9 and S-shaped stroke curve 7 and generate stroke difference curve, convert stroke difference curve in step S6, with Generate a differential pressure curve. In this embodiment, the steps after generating the target stroke curve 9 are different from those in the first embodiment.

[0055] Figure 7 It is a flow chart showing the procedure of generating the air pressure difference curve in Example 2. exist Figure 7 In the flow chart, from step S1 to step S4 is the same as ...

Embodiment 3

[0061] As the elevator device 11 becomes high-speed and the air pressure difference inside and outside the long-travel car 1 increases, as Figure 4 The shown difference between the target travel curve 9 related to the air pressure inside the car 1 and the S-shaped travel curve 7 related to the air pressure outside the car 1 increases. If the air pressure difference inside and outside the car 1 increases, the burden on the pressure regulator 2 will increase, and unless the pressure regulator 2 has a strong capability, it will be difficult to control the air pressure inside the car 1, which is not preferable.

[0062] Therefore, during the period in which the air pressure inside the car 1 is not controlled, the period p1 from the start time of the car 1 running to the predetermined time t1, and the period p1 from the predetermined time t2 to the end time of the car 1 running can be compared. Set both or one of the period p2 up to now. That is, the air pressure control device 5...

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Abstract

This elevator device is provided with: a car (1), the speed of which is controlled according to a speed pattern which represents the relation between time and speed; a pressure adjustment device (2) which changes the air pressure inside of the car (1) by supplying or discharging air; and an air pressure control device (5) which controls the pressure adjustment device (2). From the speed pattern, the air pressure control device (5) generates a pressure difference pattern which represents the relation between time and the pressure difference between inside and outside of the car (1), and controls the pressure adjustment device (2) such that the pressure difference between inside and outside of the car (1) is the pressure difference in the pressure difference pattern.

Description

technical field [0001] The present invention relates to an elevator apparatus, and more specifically, to an elevator apparatus that controls air pressure in a car. Background technique [0002] In an elevator apparatus having a car that moves up and down at high speed over a long stroke, a sudden pressure change in the car may cause discomfort such as earplugs to passengers in the car. In order to improve such problems, there are techniques described in Patent Documents 1 and 2, for example. [0003] In Patent Document 1 (Japanese Patent Laid-Open Publication No. 7-112879), an elevator device is described. The elevator device includes: an air pressure detector for detecting the air pressure inside and outside the car; and a pressurizing device. The pressurizing device pressurizes the inside of the car, and the elevator apparatus uses the pressurizing device to change the air pressure in the car in a stepwise manner according to the difference in air pressure inside and outs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B11/02B66B1/06
CPCB66B1/06B66B11/02
Inventor 吉峰竜马大沼直人岩本晃
Owner HITACHI LTD