Control device for brake of elevator

A technology of control devices and electromagnetic brakes, which is applied in hoisting devices, transportation and packaging, elevators, etc.

Inactive Publication Date: 2014-12-24
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current situation is that unnecessary economic burdens such as supplies and labor costs for replacement occur for a long time

Method used

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  • Control device for brake of elevator
  • Control device for brake of elevator
  • Control device for brake of elevator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0014] figure 1 It is a schematic configuration diagram showing the brake control device for an elevator according to the first embodiment. 1 is an elevator control circuit for controlling the operation of the elevator, 2 is an electromagnetic brake for braking the hoist of the elevator, 3 is a power supply for the electromagnetic brake 2, and 4 is a brake operation sensing switch for sensing the operating state of the electromagnetic brake 2.

[0015] 5 is an electromagnetic contactor operated by the elevator control circuit 1, and its normally open contacts 5a1, 5a2 are connected between the electromagnetic brake 2 and the brake power supply 3. In addition, as the normally open contacts 5 a 1 , 5 a 2 , it is necessary to use contacts having sufficient opening and closing performance for the voltage and current supplied to the electromagnetic brake 2 .

[0016] Also, 6, 7 are power relays operated by the elevator control circuit 1, whose normally closed contacts 6b, 7b are c...

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PUM

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Abstract

The present invention provides a control device for a brake of an elevator, wherein contact reliability of contacts of electromagnetic contactors and so on used in the control of an electromagnetic brake can be ensured, and replacements also can be performed according to real lss states of the contacts. The control device for the brake comprises: an electromagnetic contactor (5) which is connected in parallel with a plurality of normally open contacts (5a1, 5a2) capable of opening and closing synchronously between an electromagnetic brake (2) and a power supply (3); normally closed contacts (6b, 7b) which are connected in series to the contacts with the normally open contacts (5a1, 5a2); and a control circuit (1), wherein the control circuit selects one of the normally closed contacts (6b, 7b) to keep close, and performs control so that the residual normally closed contacts (6b, 7b) only break for a while before or after the electromagnetic contactor (5) switches the opening / closing of the normally open contacts (5a1, 5a2), and the control circuit also can change the selected normally closed contact according to the opening / closing times of the normally open contacts (5a1, 5a2) performed by the electromagnetic contactor (5).

Description

[0001] This application is based on Japanese Patent Application No. 2010-159140 (filing date: July 13, 2010), and enjoys the priority of this application. The entire content of this application is incorporated by reference. technical field [0002] The present invention relates to an elevator brake control device for controlling an electromagnetic brake used for elevator braking. Background technique [0003] In order to ensure the safety of operation, there are multiple safety devices in the elevator. The most basic device is the braking device of the winch. As the braking device of the hoist, an electromagnetic brake using an electromagnet is generally used. By supplying power to this electromagnetic brake via an electromagnetic contactor, the brake is released, and the elevator is brought into a state where it can be operated. In addition, when the elevator stops, the electromagnetic brake is cut off by the electromagnetic contactor to maintain the braking state. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D5/30B66B5/00
Inventor 佐藤慎史
Owner TOSHIBA ELEVATOR KK
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