CN2147223Y

CN2147223Y - Quick lifting dc electric magnetic iron

Info

Publication number: CN2147223Y
Application number: CN 92241872
Authority: CN
Inventors: 瞿安; 杨森; 赵光国
Original assignee: LIFTING ELECTRIC MAGNETIC IRON FACTORY YINGKOU CITY
Current assignee: LIFTING ELECTRIC MAGNETIC IRON FACTORY YINGKOU CITY
Priority date: 1992-11-26
Filing date: 1992-11-26
Publication date: 1993-11-24
Anticipated expiration: 2002-11-26

Abstract

The utility model belongs to an electromagnetism lifting apparatus and is a quick lifting dc electric magnetic iron. A laminated iron core and a plurality of electromagnet coils are connected in series. A dropping resistor is connected in series with a coil circuit. The quick lifting dc electric magnetic iron is provided with bad permeability magnetic material space and low magnetism density. Therefore, the utility model has sufficient attracting force. The release time is 0.1 second under a rated current. The high speed automatic requirement can be completely satisfied.

Description

Quick lifting dc electric magnetic iron

The utility model belongs to the electromagnetism weight-lifting equipment, especially is widely used for the quick lifting DC electromagnet in the automation Rolling Production.

DC electromagnet of the prior art adopts dead-soft steel as magnetic core, has a coil that links to each other with power supply, and the pole shoe with solid shape is in order to pick up the section bar of respective shapes.In production reality, require lifting electromagnet must reduce to be inhaled in the shaped steel and produce eddy current loss, otherwise both wasted electric energy, will make the shaped steel heating again and influence the electromagnet temperature rise.In addition, the enough suction of electromagnet generation that plays in a flash from energising holds the opening time that shaped steel experiences, and be reduced to zero and discharge the drop away time that shaped steel experienced from the suction that plays in a flash of outage, all must be short as far as possible, so that fully satisfy the requirement of automated handling speed, but existing DC electromagnet all surpasses 0.3 second, can not meet the demands.Simultaneously,, just must adopt electromagnet, bring inconvenience and invest increase with difformity cartridge for adapting to the difformity and the size of being inhaled shaped steel.

The purpose of this utility model is, a kind of above-mentioned defective that overcomes is provided, and can pick up fast and discharge, and has enough suction also can be suitable for the quick lifting electromagnet of differential profiles.

The utility model adopts the cold-reduced silicon sheet laminated core, and with the series connection of many magnet coils and the mode of connection that seals in dropping resistor to reduce coil turn, be provided with the conformal cartridge of replacement, between conformal cartridge and iron core, be provided with additional bad permeability magnetic material gap, make the linear portion of work of electromagnet, with truncate magnetic flux lifting time at curve of magnetization.

Description of drawings:

Fig. 1 is the front view of quick DC electromagnet;

Fig. 2 is the lateral plan of quick DC electromagnet.

Now with reference to the accompanying drawings, describe the application's preferred embodiment in detail, number in the figure 1 is repeatedly folded iron core, and label 2 is a coil, and label 3 is the conformal cartridge, and label 4 is additional bad permeability magnetic material gap.As seen from the figure, the middle part of C type laminated core (1) is wound with coil (2), is connected with conformal cartridge (3) on two ends of iron core, utilizes this area conventional means can finish above-mentioned connection.Additional bad permeability magnetic material gap (4) is set between conformal cartridge (3) and laminated core (1), can select for use copper material to make this gap (4), and suitably enlarging air gap, many magnet coil series connection on the line also seal in the dropping resistor (not shown).C shape laminated core (1) is made with cold-reduced silicon sheet.Thereby the instantaneous eddy current that produces when preventing the direct current flux lifting delays the lifting of magnetic flux.Adopt low magnetic density, make the linear portion of work of electromagnet, with the time of truncate magnetic flux lifting at curve of magnetization.

The utility model that designs first and manufacture experimently result after tested is: be no more than 0.1 second the drop away time under rated current; When electric current is 1.25 times of rated current, be no more than 0.2 second, pick up opening time similarly, the suction abundance.Facts have proved the complete requirement that can satisfy increasingly automated carrying shaped steel.

Claims

1, a kind of quick lifting DC electromagnet, have iron core and coil, on iron core, be associated with cartridge, it is characterized in that, described iron core (1) is a laminated core, coil (2) is wrapped on the iron core (1), and cartridge (3) replacedly links with iron core (1) by additional bad permeability magnetic material gap (4), and many magnet spools (2) are connected and added a dropping resistor.

2,, it is characterized in that laminated core (1) is the cold-reduced silicon sheet iron core according to the quick lifting DC electromagnet of claim 1.

3,, it is characterized in that described modification space (4) is bad permeability magnetic material, makes as copper according to the quick lifting DC electromagnet of claim 2.

4, according to the quick lifting DC electromagnet of claim 3, it is characterized in that the linear portion of work of electromagnet at curve of magnetization.