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Elevator lift car and damping device

A vibration damping device and elevator car technology, which is applied in the field of elevators, can solve problems such as not being able to meet the use requirements of the elevator system, achieve the effects of convenient control, reduce low-frequency vibration, and meet the use requirements

Inactive Publication Date: 2019-12-10
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the particularity of the elevator system, the load in the elevator car changes within a certain range, and the ratio of the maximum load to the minimum load can reach 2-3 times, so the quasi-zero stiffness vibration isolator with fixed mechanical properties cannot meet the requirements. Requirements for the use of elevator systems

Method used

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  • Elevator lift car and damping device
  • Elevator lift car and damping device
  • Elevator lift car and damping device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Elevator car, including damping device, adjusting device, measuring device and controller;

[0104] The damping device is installed on the top of the car or the bottom of the car;

[0105] The measuring device is used to detect the load of the vibration reduction device;

[0106] The damping device includes a positive stiffness element and a negative stiffness element;

[0107] The controller is configured to output an adjustment control signal to the adjustment device according to the load of the vibration reduction device;

[0108] The adjustment device is used to adjust the mechanical characteristics of the vibration reduction device according to the adjustment control signal.

[0109] The elevator car of the first embodiment is based on the concept of a quasi-zero stiffness vibration isolator. The controller controls the adjustment device in real time to adjust the overall mechanical characteristics of the vibration reduction device according to the actual load of the vibratio...

Embodiment 2

[0111] Based on the elevator car of the first embodiment, the positive stiffness element is connected in parallel with the negative stiffness element.

[0112] Preferably, the negative stiffness element is realized by an unstable structure, and when the load exceeds a limit value, the ratio of the load increment to the deformation increment is negative.

[0113] Preferably, the negative stiffness element is designed as a combination of one or more butterfly springs, diaphragm springs or buckling beams according to the force requirements.

[0114] Preferably, the negative stiffness element is an electromagnetic device.

[0115] The electromagnetic device is an electromagnet or a combination of an electromagnet and a permanent magnet.

[0116] Preferably, the positive stiffness element is made of conventional damping materials such as coil springs, rubber or polyurethane, and the ratio of the load increment to the deformation increment is positive.

[0117] Preferably, the adjustment devic...

Embodiment 3

[0122] The elevator car based on the first embodiment, such as Figure 4 As shown, the vibration damping device 1 is arranged between the car bottom 22 and the lower beam or supporting frame 23.

[0123] In the elevator car of the third embodiment, the mechanical characteristic curve of the vibration damping device can be adjusted in real time through the controller, so that the vibration damping device works in a small rigidity area, and the vibration isolation ability of the car bottom 22 is improved.

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PUM

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Abstract

The invention discloses an elevator lift car comprising a damping device, an adjusting device, a measuring device and a controller. The damping device is installed on the roof of the lift car or at the bottom of the lift car. The measuring device is used for detecting the load of the damping device. The damping device comprises a positive stiffness element and a negative stiffness element. The controller outputs adjusting and control signals to the adjusting device according to the load of the damping device. The adjusting device adjusts the mechanical characteristics of the damping device according to the adjusting and control signals. The invention further discloses several kinds of damping devices. By the adoption of the elevator lift car and the damping devices, low-frequency vibrationof the lift car can be effectively lowered, different loading work conditions can be met at the same time, the use requirement of an elevator system is met, the size is small, and control is convenient.

Description

Technical field [0001] The invention relates to elevator technology, in particular to an elevator car and a vibration damping device. Background technique [0002] Ride comfort is an important indicator for evaluating elevator quality. In order to reduce car vibration and improve ride comfort, the vibration damping device is an effective passive vibration reduction measure. However, since the vibration damping element needs to support the car and passengers, the rigidity is relatively large, and the vibration isolation ability of low frequency vibration is small. [0003] During the operation of the elevator, the vibrations generated by the guide rails, rolling guide shoes and other components are all low-frequency vibrations. Such low-frequency vibrations will affect the ride comfort. There is a gap between the high-rigidity support performance of the vibration damping device and the low-rigidity damping performance contradiction. [0004] Due to the particularity of the elevator...

Claims

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Application Information

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IPC IPC(8): B66B11/02
CPCB66B11/028
Inventor 莫志翔王玮彦费翔
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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