CN2188801Y

CN2188801Y - Arc welding voltage transformer

Info

Publication number: CN2188801Y
Application number: CN 94201790
Authority: CN
Inventors: 王建行
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-24
Filing date: 1994-01-24
Publication date: 1995-02-01
Anticipated expiration: 2004-01-24

Abstract

The utility model relates to an AC arc welding voltage transformer used by an electric welder, which is suitable for the use for ordinary manual arc welding. A casing type iron core is adopted, a primary and a secondary windings are respectively wound around the both ends of the same core iron column, clearances among the windings are provided, a variable type moving iron core is composed of two moving iron cores and a regulating device, and the two moving iron cores and the regulating device are arranged in an iron core window which is arranged between the primary and the secondary windings. The magnitude of the arc welding current can be changed under the condition of the two moving cores shifting out of or shifting into the iron core window. The utility model has the advantages of reasonable magnetic path distribution, big current regulation range, small moving core volume, little copper consumption for windings and convenient regulation.

Description

Arc welding voltage transformer

The utility model is the AC arc welding power source that a kind of electric welding machine is used, and is suitable for general manual electric arc welding and uses.

Arc welding transformer is the most frequently used a kind of Arc Welding Power.Normally used arc welding transformer is divided into two kinds of moving-iron type and moving-coil types according to the mode of regulating electric current.The moving-iron type transformer all adopts " mouth " font iron core, and primary and secondary coil lays respectively on two side columns, is that magnetic shunt is regulated electric current with middle movable iron core, and simple in structure, volume is less, but arc stability is relatively poor, and the Current Regulation scope is little.If will add wide adjusting range, must on winding, increase tap, use inconvenience.Moving-coil transformer adopts " day " font iron core, and primary and secondary coil all on center pillar, is regulated electric current by the distance of regulating between two coils, and magnetic circuit distributes rationally, and arc stability is better, but is subjected to spatial limitation, and the Current Regulation scope is littler.

The utility model is exactly the characteristics in conjunction with above-mentioned two kinds of arc welding transformers, designs a kind of magnetic circuit and distributes rationally, and volume is little, and structure is simpler, the moving-iron type arc welding transformer that adjustable range is bigger.

The utility model selects for use moving-iron type to regulate the electric current structure, this transformer core adopts the shell-type iron core, primary and secondary coil is respectively around the two ends of " day " font same center unshakable in one's determination iron prop, leave the gap between the primary and secondary coil, adjustable moving iron core is made up of two in the window unshakable in one's determination that is contained between the primary and secondary coil moving iron cores and adjusting device.Two moving ends unshakable in one's determination are connected by a crossbeam, have threads of lead screw to link to each other with regulating handle in the middle of the crossbeam, shake handle and can make two moving iron cores move into simultaneously or shift out in the window unshakable in one's determination.Two moving magnetic shunts that constitute transformer unshakable in one's determination when moving iron core all moves into window unshakable in one's determination, can obtain maximum leakage reactance, and moving iron core is when all shifting out window unshakable in one's determination, the air leakage field becomes the major part of leakage reactance, can obtain minimum leakage reactance, thereby changes the size of arc-welding electric current.

The utility model adopts the unshakable in one's determination and moving-iron type structure of shell-type, compares with original arc welding transformer, has increased the Current Regulation scope, because magnetic circuit distributes rationally, the winding copper consumption can reduce, and moving core volume is little, easy to adjust, and the complete machine ratio of performance to price obviously improves.

Accompanying drawing 1 is a structural representation of the present utility model.

Accompanying drawing 2 is the utility model internal structure schematic diagrames.

This transformer adopting " day " font shell-type iron core, as making the transformer that the Current Regulation scope is the 50-250 peace, with dashing folded thick about 0.18 meter of good silicon steel sheet (1), primary coil (2) and secondary coil (3) all with flakiness ratio be 4 flat copper double glass fiber line respectively lap wound at the two ends of shell-type newel unshakable in one's determination, leave 0.025 meter gap between primary coil (2) and the secondary coil (3), in the window unshakable in one's determination in gap, place two moving (4) unshakable in one's determination.The upper end of two moving (4) unshakable in one's determination is connected by crossbeam (5), has threaded screw rod (6) to link to each other with regulating handle (7) in the middle of the crossbeam (5), shakes handle (7) and can make two moving (4) unshakable in one's determination to move into or shift out the window of shell-type iron core (1) simultaneously.When moving (4) unshakable in one's determination move into or shift out the window of shell-type iron core (1), can change the size of arc-welding electric current.

Claims

1, a kind of moving-iron type arc welding transformer, form by iron core, primary coil, secondary coil and adjustable moving iron core etc., it is characterized in that this transformer core adopts the shell-type iron core, primary and secondary coil is respectively around the two ends of same " day " font center unshakable in one's determination iron prop, leave the gap between the primary and secondary coil, adjustable moving iron core is made up of two in the window unshakable in one's determination that is contained between the primary and secondary coil moving iron cores and adjusting device.

2, arc welding transformer as claimed in claim 1 is characterized in that two moving ends unshakable in one's determination are connected by a crossbeam, has threads of lead screw to link to each other with regulating handle in the middle of the crossbeam, shakes handle and can make two moving iron cores move into simultaneously or shift out in the window unshakable in one's determination.