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A vibration damping device, vibration detection technology, applied in transportation and packaging, spring/shock absorber, vibration suppression adjustment, etc., can solve the problem of increasing the cost of components

Inactive Publication Date: 2009-05-13
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the method of reducing the vibration of an object using the above-mentioned vibration-damping device, it is necessary to install the vibration-damping device in the vibration-damping object.
In addition, there is a problem of an increase in the number of parts and the resulting cost
[0007] In particular, in an elevator, since the car to be damped moves within the hoisting path, it is necessary to perform complex control design in advance in consideration of vibration characteristics that vary depending on the position of the car in order to damp vibration using a vibration damping device. And other issues

Method used

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no. 1 Embodiment approach

[0020] figure 1 It is a figure which shows the structure in the case of applying the damping apparatus concerning 1st Embodiment of this invention to an elevator.

[0021] The elevator includes, as a drive source, a hoist 11 installed in an appropriate place such as a machine room on the highest floor of a building. A main pulley 12 is attached to a rotating shaft 11 a of the hoist 11 , and a rope 13 is reeled on the main pulley 12 . A car 14 is connected to one end of the rope 13 , and a balance weight 15 is connected to the other end of the rope 13 via a deflector pulley 16 .

[0022] The car 14 and the counterweight 15 are supported on a pair of guide rails (only one side is shown here) 17 and 18 erected in the lifting path via guide blocks. In addition, the car 14 and the counterweight 15 move vertically in a suspended manner via the ropes 13 as the main pulley 12 rotates.

[0023] The car 14 is provided with a car chamber 14 a for passengers to ride on, and a load sens...

no. 2 Embodiment approach

[0056] Next, a second embodiment of the present invention will be described.

[0057] Figure 8 It is a figure which shows the structure in the case of applying the damping apparatus concerning 2nd Embodiment of this invention to an elevator. In addition, for the same as in the above-mentioned first embodiment figure 1 Parts having the same structure are given the same reference numerals and their descriptions are omitted.

[0058] In an elevator, a speed governor 30 called a governor is generally provided. The speed governor 30 includes governor pulleys 31 and 32 as a pair of rotating bodies, and a rope 33 stretched between the governor pulleys 31 and 32 . The car 14 is connected to the rope 33 , and the regulator pulleys 31 and 32 rotate in conjunction with the movement of the car 14 .

[0059] In addition, a rotation detector 34 composed of a pulse generator or the like is attached to one regulator pulley 31 . When the governor pulley 31 rotates according to the moveme...

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Abstract

A load signal (S2) outputted from a load sensor (19) installed in an elevator car (14) is passed through a highpass filter (24) to acquire a vibration signal (S3) of the elevator car (14). A phase control section (25) generates a dumping signal (S4) by imparting a phase variation corresponding to the length of the rope (13) between the hoist (11) and the elevator car (14) to the vibration signal (S3). A gain multiplying section (26) multiplies the dumping signal (S4) by a predetermined gain, adds the product to a torque command signal (S1), and gives the resultant signal to the hoist (11). Thus, the rope (13) is swung by the torque control of the hoist (11), and the vibration component of the elevator car (14) is reduced.

Description

technical field [0001] The present invention relates to a vibration damping device, and in particular, to a vibration damping device suitable for reducing vibration transmitted from a hoist of an elevator to a car via ropes, and the like. Background technique [0002] The car of the elevator moves up and down in the lifting path through the rope on the hoist of the coil frame. At this time, the vibration generated when the hoist is rotating may be transmitted to the car via the ropes, thereby giving discomfort to passengers in the car. [0003] As a method of reducing the vibration generated when such a car moves, an active vibration damping device disclosed in Patent Document 1, for example, is known. This vibration damping device is attached to an object to be damped, and generates vibration in an opposite phase to the vibration of the object to damp the vibration. In particular, an anti-vibration device that vibrates by driving a weight made of a magnetic body with an e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/06F16F15/02
CPCB66B11/028B66B1/3484F16F15/002
Inventor 平井正昭村尾洋辅
Owner TOSHIBA ELEVATOR KK