JPH0360895U

JPH0360895U -

Info

Publication number: JPH0360895U
Application number: JP11587989U
Authority: JP
Priority date: 1989-10-03
Filing date: 1989-10-03
Publication date: 1991-06-14

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示す回路図、第
２図ａ，ｂ及びｃはこの考案の一実施例の正転の
制動原理を示す回路図、第３図は従来の巻上機を
一部ブロツクで示す回路図である。図において、１……交流電源、２，３……正転
用のａ接点、４，５……逆転用のａ接点、６１…
…電機子コイル、６２……界磁コイル、９……正
転用のスイツチ、１０……正転用の電磁コイル、
１１……逆転用のスイツチ、１２……逆転用の電
磁コイル、１３……ブリツジ回路、１４……正転
用のｂ接点、１５……発電抵抗、１６……逆転用
のｂ接点、１７……ブリツジ回路である。なお、
各図中、同一符号は同一、又は相当部分を示す。 Fig. 1 is a circuit diagram showing an embodiment of this invention, Fig. 2 a, b, and c are circuit diagrams showing the braking principle of forward rotation of an embodiment of this invention, and Fig. 3 is a conventional hoisting machine. FIG. 3 is a circuit diagram partially showing the circuit in blocks. In the figure, 1...AC power supply, 2, 3...A contact for forward rotation, 4, 5...A contact for reverse rotation, 61...
... Armature coil, 62 ... Field coil, 9 ... Switch for forward rotation, 10 ... Electromagnetic coil for forward rotation,
11...Switch for reverse rotation, 12...Magnetic coil for reverse rotation, 13...Bridge circuit, 14...B contact for forward rotation, 15...Generating resistor, 16...B contact for reverse rotation, 17... It is a bridge circuit. In addition,
In each figure, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A motor having a first bridge circuit that rectifies alternating current power into direct current, an armature coil, and a field coil connected to the armature coil via a second bridge circuit, and forward and reverse rotation of the motor. an operating circuit that is connected between the first bridge circuit and the electric motor, and is capable of operating the electric motor in forward and reverse directions and stopping the electric motor based on the operation of the operating circuit; The armature coil is short-circuited through a power generation resistor so that dynamic braking is activated when forward rotation and reverse rotation of the motor is stopped based on the forward rotation and reverse rotation stop switching circuit that performs switching, and the operation to stop the forward rotation and reverse rotation. A hoisting machine characterized by being equipped with a dynamic braking circuit.