CN103248310A

CN103248310A - Damping and noise reducing method for single-phase motor used for lifting device

Info

Publication number: CN103248310A
Application number: CN2013101774255A
Authority: CN
Inventors: 陈亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-08-14

Abstract

The invention provides a damping and noise reducing method for a single-phase motor used for a lifting device. The damping and noise reducing method comprises a main winding, a secondary winding, a running capacitor, and a starting capacitor connected with a switch in series, and provides an ascending operating circuit and a descending operating circuit by changing the connecting method of the machine winding through an alternating current contactor without changing the supply voltage. In the descending operating circuit, the secondary winding is connected with the main winding in series to generate partial voltage operation; the capacitor is connected with one winding in parallel to enable the machine winding current to generate phase difference to generate starting torque, so as to greatly decrease the reverse operating current of the motor and eliminate the defects of reverse high energy consumption, strong noise and high vibration caused by large current. According to the method provided by the invention, the condition that the conventional single-phase motor can not be used for hoisting machinery or lifting machinery is solved, and a domestic gap is filled. The wire connection method can also be used for machines requiring motors to work under different powers, so as to achieve the purpose of saving energy.

Description

A kind of jacking equipment damping and de-noising method of monophase machine

Technical field

The present invention relates to a kind of electric machines control technology, particularly a kind of jacking equipment damping and de-noising method of monophase machine.

Background technology

Present single-phase two-capacitance capacitive motor application on lifting machine or the elevation and subsidence mechanical when weight rises and descend, all adopt the same a kind of mode of connection in parallel with main winding after the auxiliary winding series capacitance, when weight descends because the effect of acceleration of gravity, the electric current of machine operation winding is raise, because the electromagnetic noise of motor and electric and magnetic oscillation increase with the increase of electric current, often when descending, cause adverse consequencess such as motor high energy consumption, strong noise, high vibrations.Limited the application of monophase machine on lifting machine.

Summary of the invention

The technical problem to be solved in the present invention is at the deficiencies in the prior art, has proposed the damping and de-noising method that a kind of jacking equipment that can reach low current, low energy consumption, low noise and low vibrations when the decline inverted running is used monophase machine.

The technical problem to be solved in the present invention is achieved through the following technical solutions, a kind of jacking equipment damping and de-noising method of monophase machine, comprise main winding, auxiliary winding, operation electric capacity, the startup electric capacity of connecting with switch, be characterized in: comprise rising wiring circuit and decline wiring circuit

The outlet head end of main winding is set to I number lead-in wire, and the outlet tail end of main winding is set to II number lead-in wire; The outlet head end of auxiliary winding is set to III number lead-in wire, and the outlet tail end of auxiliary winding is set to IV number lead-in wire; The outlet head end of operation electric capacity is set to V number lead-in wire, and the outlet tail end of operation electric capacity is set to VI number lead-in wire; Start the electric capacity electric capacity leading-out terminal that also starts in parallel with operation electric capacity and be set to VII number lead-in wire, the switch leading-out terminal is set to VIII number lead-in wire,

Rising wiring circuit is formed the rising operating circuit by control components and parts and motor, and the rising operating circuit comprises: I, III number lead-in wire join with one of power supply after joining; IV, V number lead-in wire join; Join another of back and power supply of II, VI number lead-in wire joins;

Decline wiring circuit is formed the decline operating circuit by control components and parts and motor, and the decline operating circuit comprises: I number lead-in wire joins with one of power supply; II, III, V number lead-in wire join; Join another of back and power supply of IV, VI number lead-in wire joins, auxiliary winding is connected with main winding, make two windings produce dividing potential drop work, it is in parallel with auxiliary winding to move electric capacity, make the motor winding current produce phase difference and produce starting torque, reduce the reverse operation electric current of motor, realized the damping noise reduction of motor in the decline process.

The technical problem to be solved in the present invention can also be come to realize that further described control components and parts are the A.C. contactor group by the following technical programs.

The present invention is to change the motor winding connection method by A.C. contactor under the constant situation of supply voltage compared with prior art, and risings, two kinds of operating circuits of decline are provided.In the decline operating circuit, auxiliary winding is connected with main winding, make two windings produce dividing potential drop work, electric capacity is attempted by in one of them winding, make the motor winding current produce phase difference and produce starting torque, greatly reduce the reverse operation electric current of motor like this, the kinetic energy that utilizes weight decline self to produce moves motor under small-power, has realized the low vibrations of low noise low energy consumption.Eliminated the shortcoming that produces reverse high energy consumption, strong noise, high vibrations because of big electric current.Solve present monophase machine and can not fill up a domestic blank in the situation of lifting machine or elevation and subsidence mechanical use.Also can be used for the machinery that the requirement motor is worked with this mode of connection under different capacity, reach purpose of energy saving.If any load require motor power when starting bigger, be operated in behind the electric motor starting under the little operating mode of power, can move switching to behind the electric motor starting under the small-power, reach energy-saving effect.

Description of drawings

Fig. 1 is the schematic diagram of rising operating circuit.

Fig. 2 is the schematic diagram of decline operating circuit.

Fig. 3 is the control electrical schematic diagram.

Embodiment

A kind of jacking equipment damping and de-noising method of monophase machine, comprise main winding 1, auxiliary winding 2, operation electric capacity 3, the startup electric capacity 4 of connecting with switch 5, comprise rising wiring circuit and decline wiring circuit, rising wiring circuit and decline wiring circuit are equipped with six normally opened contacts and a normally-closed contact

As Fig. 1, rising wiring circuit is formed the rising operating circuit by control components and parts and motor, and the rising operating circuit comprises: I, III number lead-in wire join with one of power supply after joining; IV, V number lead-in wire join; Join another of back and power supply of II, VI number lead-in wire joins; Start electric capacity and join with operation electric capacity VII in parallel number lead-in wire and IV number lead-in wire and/or V number lead-in wire, VIII lead-in wire and II, VI number go between and to join or direct and power line joins; Auxiliary winding is in parallel with main winding after the capacitances in series with operation.

As Fig. 2, decline wiring circuit is formed the decline operating circuit by control components and parts and motor, and the decline operating circuit comprises: I number lead-in wire joins with one of power supply; II, III, V number lead-in wire join; Join another of back and power supply of IV, VI number lead-in wire joins, auxiliary winding is connected with main winding, make two windings produce dividing potential drop work, it is in parallel with auxiliary winding to move electric capacity, make the motor winding current produce phase difference and produce starting torque, reduce the reverse operation electric current of motor, realized the damping noise reduction of motor in the decline process; It is in parallel with operation electric capacity not need to start electric capacity under this state, can manage the mode of connection of VII, VIII number lead-in wire under the good situation of the operating state of switch, also VII and/or VIII number lead-in wire can be disconnected.

Described control components and parts comprise the A.C. contactor group, but are not limited to the A.C. contactor group.Can also realize by the components and parts with switching function.

As Fig. 3, when pressing rising button SB1, A.C. contactor KM1 and KM2 adhesive, 6 normally opened contacts that A.C. contactor KM1 is corresponding with KM2 are all closed, finish the wiring of motor rising circuit, and the normally-closed contact of KM1 is opened among the figure simultaneously, make the decline circuit inoperative, when unclamping rising button SB1,6 normal battles that A.C. contactor KM1 is corresponding with KM2 all disconnect, and motor quits work.

When pressing decline button SB2, A.C. contactor KM3 and KM4 adhesive, 6 normal all closures of making war that A.C. contactor KM3 is corresponding with KM4, the normally-closed contact of KM4 disconnects simultaneously, finishes the wiring of motor decline circuit, and the KM3 normally-closed contact is opened among the figure simultaneously, make the decline circuit inoperative, when unclamping decline button SB2,6 normal battles that A.C. contactor KM3 is corresponding with KM4 all disconnect, and motor quits work.

Claims

1. a jacking equipment is with the damping and de-noising method of monophase machine, comprises main winding, auxiliary winding, operation electric capacity, the startup electric capacity of connecting with switch, it is characterized in that: comprise rising wiring circuit and decline wiring circuit,

2. jacking equipment monophase machine according to claim 1, it is characterized in that: described control components and parts are the A.C. contactor group.