CN202535175U

CN202535175U - Hybrid excitation type internal combustion direct current arc welding machine

Info

Publication number: CN202535175U
Application number: CN2012200842504U
Authority: CN
Inventors: 杨均; 赵强
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-03
Filing date: 2012-03-03
Publication date: 2012-11-14
Anticipated expiration: 2022-03-03

Abstract

The utility model discloses an internal combustion direct current arc welding machine, wherein a hybrid excitation intermediate frequency generator is driven by an internal combustion engine to generate alternating current and then provides power for welding through rectification. The generator is composed of a stator core, alternating current windings, a rotor claw pole N pole, a rotor claw pole S pole, a permanent magnetic ring, an electric excitation ring winding, a rotating shaft and collector rings. Under the situation of maximum output, 60% of the main flux of the generator comes from the main flux generated by the permanent magnetic ring, and the other 40% comes from the main flux generated by excitation current in the electric excitation ring winding. Under the situation of minimum welding output, only the permanent magnetic ring is used for excitation; and when welding output current needs to be increased, the main flux is increased by increasing the excitation current in the excitation winding so that the welding output current is increased. In the utility model, energy conversion media of the generator come from the permanent magnetic ring and the electric excitation ring winding, the permanent magnetic ring is circular and is magnetized axially from both end faces, the process is simplified, and the material cost can be reduced.

Description

A kind of internal combustion direct current arc welding machine of composite excitation formula

Technical field:

The utility model is a kind of direct current welding equipment of small-power self power generation, and it supplies with welding energy with electric arc, is used in non-transformer or the inconvenient local welding procedure operation of connection civil power.

Background technology:

Internal combustion direct current arc welding machine, a kind of arc welding equipment that adopts the self power generation power supply, its generator type, present both at home and abroad technology intermediate frequency electric excitation types that adopt also have only a few to adopt magneto more.

The generator of electric excitation type, the required air-gap field of Conversion of energy are to produce through the electric magnet exciting coil of switching on, and the close size of magnetic only needs the size of electrical current is done to change and can be realized.Therefore, it is very easy to the realization of regulating the welding current size, but because excitation need consume continual electric energy, and this makes that the efficient of this generator is lower, the generator efficiency of an output 10KW only has an appointment 75%.

The generator of magneto, the required magnetic field of Conversion of energy is produced by permanent magnet, in whole use; Electric comb reaction power changes to some extent and causes that air gap flux density has the less variation under loading condition changes, the few of basically variation in its magnetic field, therefore; The generating power supply power supply of this form is welded; Change output, how many leads that has only through selecting cutting magnetic line changes output voltage, and the size of welding current also can only have level to regulate in several gears.Such generator though generating efficiency is higher, is used in the welding equipment, and is obviously not too suitable.

Summary of the invention:

The problem that the utility model solves is both to have improved the generating efficiency of power generator, and convenient again the use regulated.

The utility model discloses a kind of internal combustion direct current arc welding machine, the intermediate frequency generator that it constitutes the internal combustion engine drive composite excitation sends alternating current after rectification provides DC power supply for welding.The generator of this composite excitation is made up of stator core, stator AC Windings, the rotor claw utmost point N utmost point, the rotor claw utmost point S utmost point, permanent magnetic ring, magnetic inductive block, electric excitation ring-shaped winding, rotating shaft, collector ring.Wherein, under the maximum output state, 60% main flux of generator main magnetic flux from the permanent magnetic ring generation, other 40% comes from the main flux that the exciting current in the electric excitation winding produces, and two main flux directions are consistent, and it is stackable to produce electromotive force.Under the situation of minimum welding output,, when needing to increase welding output, increase the generator main magnetic flux, thereby realize increasing the welding output current through the exciting current that increases in the electric excitation winding only by the permanent magnetic ring excitation.In this was novel, generator energy conversion medium---magnetic field source was in permanent magnetic ring and electric excitation ring-shaped winding, and permanent magnetic ring is circular, and magnetizing direction is the both ends of the surface axial charging, has simplified processing technology, can reduce material cost.

Description of drawings:

Fig. 1 is that the utility model internal combustion direct current arc welding machine constitutes sketch map.

Fig. 2 is the utility model hybrid excitation generator structure half section sketch map.

Fig. 3 is that the utility model permanent magnetic ring master looks sketch map.

Fig. 4 is that the magnetizing direction sketch map is looked on the utility model permanent magnetic ring left side.

Among the figure: 1, internal combustion engine; 2, the intermediate frequency generator of composite excitation; 3, stator core;

4, stator AC Windings; 5, the rotor claw utmost point N utmost point; 6, the rotor claw utmost point S utmost point;

7, electric excitation ring-shaped winding; 8, permanent magnetic ring; 9, rotating shaft; 10, collector ring.

Embodiment:

The assembling of rotor: the rotor claw utmost point N utmost point [5] is pressed onto in the rotating shaft [9]; Brush coating on the position of preparing the dress magnet ring; Again permanent magnetic ring [8] is pressed onto rotating shaft [9] and compresses with the rotor claw utmost point N utmost point [5], and then the electric excitation ring-shaped winding [7] that coiling is good is pressed onto on the rotor claw utmost point N utmost point [5], the respective face at permanent magnetic ring [8] brushes glue at last; And the rotor claw utmost point S utmost point [6] is pressed onto rotating shaft [9] is gone up and permanent magnetic ring [8] is close to; The lead-in wire of electric excitation ring-shaped winding [7] is drawn, load onto collector ring [10], accomplished the pin of the lead-in wire of electric excitation ring-shaped winding [7] and collector ring [10] i.e. group welded together the rotor portion of the utility model generator.

The execution mode of remainder is decided according to different generator unit structure forms, not at the row of the utility model claim.Repeat no more here.

Claims

1. the internal combustion direct current arc welding machine of a composite excitation formula; It constitutes the generator (2) that internal combustion engine (1) drives composite excitation; Send alternating current after rectification provides DC power supply for welding; The generator of this composite excitation; Be made up of stator core (3), stator AC Windings (4), the rotor claw utmost point N utmost point (5), the rotor claw utmost point S utmost point (6), electric excitation ring-shaped winding (7), permanent magnetic ring (8), rotating shaft (9), collector ring (10), it is characterized in that: generator energy conversion medium---magnetic field source is in permanent magnetic ring (8) and electric excitation ring-shaped winding (7).

2. the internal combustion direct current arc welding machine of a kind of composite excitation formula according to claim 1 is characterized in that: the permanent magnetic ring in the generator (8) is for circular, and magnetizing direction is the both ends of the surface axial charging.