CN201647792U

CN201647792U - Electro-permanent magnet lifting jack

Info

Publication number: CN201647792U
Application number: CN2010201621336U
Authority: CN
Inventors: 叶井启
Original assignee: KUNSHAN WEIYI MACHINERY CO Ltd
Current assignee: KUNSHAN WEIYI MACHINERY CO Ltd
Priority date: 2010-04-13
Filing date: 2010-04-13
Publication date: 2010-11-24
Anticipated expiration: 2020-04-13

Abstract

The utility model relates to an electro-permanent magnet lifting jack capable of sucking, hoisting and carrying steel plates and other materials. The lifting jack comprises a magnetic conduction shell, a coil fixed in the magnetic conduction shell, a first permanent magnet group arranged outside the coil and a second permanent magnet group arranged inside the coil, wherein the first permanent magnet group is permanent magnets containing the elements of neodymium, ferrum and boron, and the intrinsic coercive force thereof ranges from 11700 to 21000 oersted; and the second permanent magnet group is permanent magnets containing the elements of aluminium, nickel and cobalt, and the intrinsic coercive force thereof ranges from 420 to 1850 oersted. The electro-permanent magnet lifting jack has advantages that the electro-permanent magnet technology is adopted, and users are free from worrying about endangering workers and equipment under the circumstance of falling of the steel plate and other materials caused by power down; and the time of excitation and demagnetization is short, and the electro-permanent magnet lifting jack does not need to be powered up at other times, thereby saving electric energy.

Description

Electric permanent magnetic lifter

Technical field

The utility model relates to a kind of Jack, particularly relates to a kind of Jack that materials such as steel plate is formed lifting, carrying function.

Background technology

In the present mechanical industry magnet crane is adopted in the carrying of materials such as iron and steel more, its main portion is an electromagnet.This hoisting crane needs continued power when work, in case outage, electromagnet will lose magnetism and material is fallen, jeopardize the safety of personnel and equipment, in the process of whole use, the encouraging of electromagnet, demagnetization time are long, and need continued power, cause power consumption too high.

Summary of the invention

The utility model provides a kind of energy-conservation, safe electric permanent magnetic lifter that is applicable to material lifting such as steel plate, handling for solving the technical matters that exists in the known technology.

Concrete scheme is:

Electric permanent magnetic lifter, comprise magnetic conductive shell, be fixed on the coil in the described magnetic conductive shell, be arranged on the described coil outside first permanent magnets, be arranged on second permanent magnets of described coil inboard, described first permanent magnets is for containing neodymium, iron, the permanent magnet block of boron element, its HCJ is the 11700-21000 oersted, described second permanent magnets is for containing aluminium, nickel, the permanent magnet block of cobalt element, its HCJ is the 420-1850 oersted, and the in-to-in magnetic line of force is parallel separately with second permanent magnets with described first permanent magnets for the axis of described coil.

Described magnetic conductive shell internal fixation has a pair of fixed support, and described fixed support is positioned at two outsides of described first permanent magnets, and described fixed support clamps and fixing described first permanent magnets, coil and second permanent magnets.

The magnetic pole and the described magnetic conductive shell of described first permanent magnets and second permanent magnets are adjacent to.

Principle of work of the present utility model is:

When electric permanent magnetic lifter is worked, in coil, feed a forward short-time current, the magnetic field that electric current produces exerts an influence to first permanent magnets and second permanent magnets.First permanent magnets that contains neodymium, iron, boron owing to the HCJ that contains second permanent magnets of aluminium, nickel, cobalt is much smaller, so under the influence in magnetic field, can make the polarity generation conversion of second permanent magnets, and magnetic field does not almost have influence to first permanent magnets.After the reversal of second permanent magnets, because this moment, first permanent magnets was identical with the polar orientation of second permanent magnets, the magnetic patch external magnetic line of force is got back to magnetic patch through the bottom of magnetic conductive shell, the top of sling material, magnetic conductive shell, promptly material is produced suction.After the outage, permanent magnet block still can keep magnetic force, can carry out lifting, shifting function to material, and material can not fall during operation, and is safe.

When need put down material, in coil, feed a reverse short-time current, produce backing field in the coil and make, under this magnetic field effect, can make the magnetic pole generation conversion of second permanent magnets, first permanent magnets and second permanent magnets are got back to the state of opposite polarity directions, at this moment, the magnetic line of force that they form constitutes C/LOOP, and electric permanent magnetic lifter object does not to external world produce magnetic action, can realize putting down material.

The advantage that the utlity model has is:

1, because the utility model has adopted electric permanent magnetism technology, in use after the outage, permanent magnets still can keep suction, still can do material sling, shifting function, jeopardize the safety of personnel and equipment and need not to worry to make material such as steel plate to fall owing to power down.

2, because the magnetic field that only needs a short-time current to produce can change the polarity of second permanent magnets, thereby excitation, demagnetization time are short, and the other times Jack in the working process need not to power up, so a large amount of electric energy of saving.

Description of drawings

Fig. 1 is the front elevation that the utility model is partly cut open.

It is identical with the second permanent magnets polarity and semisectional view is looked on left side when suction is arranged that Fig. 2 is that the utility model adds first permanent magnets behind the forward short-time current in coil.

Fig. 3 is that semisectional view is looked on the left side that the utility model adds in coil when first permanent magnets does not have suction mutually on the contrary with the second permanent magnets polarity behind the reverse short-time current.

Fig. 4 is the full sectional view of overlooking of the present utility model.

Among the figure: 1 magnetic conductive shell, 2 fixed supports, 3 first permanent magnets, 4 coils, 5 second permanent magnets, 6 tightening screws.

The specific embodiment

Consult Fig. 1 and Fig. 2.Electric permanent magnetic lifter, comprise magnetic conductive shell 1, be fixed on the coil 4 in the described magnetic conductive shell, be arranged on the described coil outside first permanent magnets 3, be arranged on second permanent magnets 5 of described coil inboard, described first permanent magnets 3 is for containing neodymium, iron, the permanent magnet block of boron element, its HCJ is the 11700-21000 oersted, described second permanent magnets 5 is for containing aluminium, nickel, the permanent magnet block of cobalt element, its HCJ is the 420-1850 oersted, and the in-to-in magnetic line of force is parallel separately with second permanent magnets 5 with described first permanent magnets 3 for the axial line of described coil 4.

Described magnetic conductive shell 1 internal fixation has a pair of fixed support 2, and described fixed support 2 is positioned at two outsides of described first permanent magnets 3, and described fixed support 2 clamps and fixing described first permanent magnets 3, coil 4 and second permanent magnets 5.

The magnetic pole and the described magnetic conductive shell 1 of described first permanent magnets 3 and second permanent magnets 5 are adjacent to.

As shown in Figure 2, when in coil 4, feeding forward current, the S utmost point of first permanent magnets 3 is pressed close to the top of magnetic conductive shell 1, the N utmost point is pressed close to the bottom of magnetic conductive shell 1, the magnetic field that electric current produces changes the polarity of second permanent magnets 5, the S utmost point of second permanent magnets 5 is pressed close to the top of magnetic conductive shell 1, and the N utmost point is pressed close to the bottom of magnetic conductive shell 1.This moment, electric permanent magnetic lifter produced suction to material.

As shown in Figure 3, when in coil 4, feeding counter-current, the S utmost point of first permanent magnets 3 is pressed close to the top of magnetic conductive shell 1, the N utmost point is pressed close to the bottom of magnetic conductive shell 1, the magnetic field that electric current produces changes the polarity of second permanent magnets 5, the S utmost point of second permanent magnets 5 is pressed close to the bottom of magnetic conductive shell 1, and the N utmost point is pressed close to the top of magnetic conductive shell 1.This moment, electric permanent magnetic lifter did not produce suction to material.

The utility model also can be provided with the fixed support 2 of pair of L-shaped in magnetic conductive shell 1, the one side of L shaped fixed support 2 is screwed the top at magnetic conductive shell 1, another side is fixed on two outsides of first permanent magnets 3 with screw 6, clamp and fixedly fixed support 2 in-to-ins first permanent magnets 3, coil 4 and second permanent magnets 5 available plank jam-pack between the fixed support 2 and first permanent magnets 3.

Claims

1. electric permanent magnetic lifter, it is characterized in that: described Jack comprises magnetic conductive shell, be fixed on the coil in the described magnetic conductive shell, be arranged on the described coil outside the first permanent magnets group, be arranged on the second permanent magnets group of described coil inboard, the described first permanent magnets group is for containing neodymium, iron, the permanent magnet block of boron element, its HCJ is the 11700-21000 oersted, the described second permanent magnets group is for containing aluminium, nickel, the permanent magnet block of cobalt element, its HCJ is the 420-1850 oersted, and the in-to-in magnetic line of force is parallel separately with the second permanent magnets group with the described first permanent magnets group for the axial line of described coil.

2. electric permanent magnetic lifter as claimed in claim 1, it is characterized in that: described magnetic conductive shell internal fixation has a pair of fixed support, described fixed support is positioned at the described first permanent magnets group's two outsides, and described fixed support clamps and the fixing described first permanent magnets group, coil and the second permanent magnets group.

3. electric permanent magnetic lifter as claimed in claim 1 or 2 is characterized in that: the described first permanent magnets group and the second permanent magnets group's magnetic pole and described magnetic conductive shell are adjacent to.