CN2639274Y

CN2639274Y - Electromagnetic unload permanent-magnet crampon

Info

Publication number: CN2639274Y
Application number: CN 03205605
Authority: CN
Inventors: 屈景春; 屈大鹏; 关景和; 王正希; 张工化
Original assignee: HUISHENG STRONG MAGNET CO Ltd JILIN
Priority date: 2003-08-01
Filing date: 2003-08-01
Publication date: 2004-09-08
Anticipated expiration: 2013-08-01

Abstract

The utility model discloses an electromagnetic unloading hoisting head, which comprises a reverse U shaped outer magnetic yoke 1, an ringed below magnetic yoke cover 2, an electromagnetic winging 3, a commutating electro-circuit 4, a reverse T shaped inner magnetic yoke 5, a ringed permanent magnet 6. The device is an integrative open magnetic hoisting head integrated with permanent magnet, electromagnetism and commutating together. The utility model has the advantages of novel design concept and easy for producing, which can overcome the vibrating situation brought by the steel plates when the large-plane steel plates are being hoisted. The device solves the safety and the reliability, realizes the installation for a plurality of hoisting heads positioned on the hoisting support, and the even arrangement for the hoisting heads when absorbing the large-plane steel plates. The device can finish the hoisting operation by the total absorbing force for a plurality of hoisting heads.

Description

A kind of electromagnetism off-load permanent magnet hoisting hangs head

Technical field

The utility model relates to big plane steel plate lifting off-load technical field, and particularly a kind of economy, convenience, safe and reliable electromagnetism off-load permanent magnet hoisting hang head.

Background technology

What traditional big plane steel plate lifting off-load was adopted is that single large-scale electromagnetic lifter head or permanent magnetism hang head, thisly hang head to exist volume weight big, the mechanical drive train complexity, power consumption is big, owing to be single magnetic head, the local adhesive steel plate of therefore big plane steel plate produces the gravity that vibration forms external force and steel plate self and synthesizes in the lifting off-load operational process, being directed downwards of power, causing easily comes off automatically causes accident, the shortcoming that safety and reliability are difficult to guarantee.Develop to obtain common concern at the nineties magneto hoisting hook head at home, constantly bring forth new ideas technically and ripe, disclosed Chinese patent has: ZL922287775, ZL942282906, ZL992497418 etc.Such permanent magnet hoisting hangs head should exist that volume is big, weight is also big, and off-load machinery is complicated, has deficiencies such as potential safety hazard.

The utility model content

The purpose of this utility model is to overcome above-mentioned many shortcoming and defect, provide that a kind of volume is little, compact conformation, economize on electricity, permanent magnetic energy degree of utilization height, use flexible, cheap, safety and reliability are high, and a kind of electromagnetism off-load permanent magnet hoisting that can satisfy big plane steel plate lifting technical requirements fully hangs head.Its design philosophy novelty, be convenient to make, can solve the vibration problem that big plane steel plate lifting process is produced by steel plate, both solved safety, solved reliability again, realized that a plurality of heads that hang for a short time are distributed on the suspension bracket and install, when the big plane steel plate of adhesive, hung uniformly that a plurality of summations of hanging a suction are finished jointly to inhale to restart and hung.

The utility model adopts following technical scheme for achieving the above object:

A kind of electromagnetism off-load permanent magnet hoisting hangs head, comprises permanent magnetism, electromagnetism that inverted U outer yoke, ring-like lower yoke cover, magnet coil, rectifying circuit, inverted T shape inner yoke, ring-like permanent magnet are formed, and the integrated open circuit magnetic circuit of rectifying circuit hangs head, it is characterized in that:

1. tapped blind hole and through hole are corresponding with the axial concentric locating of high-strength adhesive between above-mentioned inverted T shape inner yoke, ring-like permanent magnet and inverted U outer yoke three;

2. above-mentioned magnet coil be placed in the cavity that inverted U outer yoke and inverted T shape inner yoke and ring-like permanent magnet form after rectifying circuit is connected in;

3. cooperate connection at above-mentioned ring-like lower yoke sleeve to screw thread between excircle and the inverted U outer yoke lower end inner periphery.

Above-mentioned a kind of electromagnetism off-load permanent magnet hoisting hangs the cavity that inverted U outer yoke in the head, magnet coil, inverted T shape inner yoke, ring-like permanent magnet form and reinstates resin embedding location together with rectifying circuit one.

The ring-like lower yoke cover internal orifice that above-mentioned a kind of electromagnetism off-load permanent magnet hoisting hangs in the head is a conical surface hypotenuse, the lower surface axially place of keeping to the side is established assembling recruitment person ignorant of ABCs in art hole, and the cavity that forms between U type outer yoke cover and magnet coil, the inverted T shape inner yoke is with flat mouthful of resin embedding.

The high-coercive force Nd-Fe-B rare earth permanent magnetic material was made during the ring-like permanent magnet of the utility model adopted, and purpose is the operating temperature that conforms, and did not cause ring-like permanent magnet demagnetization when producing reverse electromagnetic field off-load by electric current in that magnet coil is instantaneous.

Ring-like lower yoke cover internal orifice of the present utility model is designed to the conical surface and becomes hypotenuse, and purpose is to improve Surface field intensity, the magnet short-cut path between minimizing and the inverted T shape inner yoke termination.

Inverted T shape inner yoke design of the present utility model, purpose is that inverted T shape inner yoke lower surface gathers magnetic, tapped blind hole is established at center, inverted T shape inner yoke upper surface, purpose be to cooperate with the centre hole of ring-like permanent magnet and U type outer yoke for and lifting hanger between join suspension hook or suspension ring.

Description of drawings

Fig. 1 is the axial cut-away view that a kind of electromagnetism off-load permanent magnet hoisting of the present utility model hangs head

Fig. 2 is the schematic perspective view of the utility model analog operation state suspension bracket

A kind of electromagnetism off-load permanent magnet hoisting shown in Figure 1 hangs permanent magnetism, the electromagnetism that head is made up of inverted U outer yoke 1, ring-like lower yoke cover 2, magnet coil 3, rectifying circuit 4, inverted T shape inner yoke 5, ring-like permanent magnet 6, and the integrated open circuit magnetic circuit of rectifying circuit hangs head.

The configurable number amount of the electromagnetism off-load hoisting hook head on Fig. 2 suspension bracket depends on the area and the weight of steel plate, is proportional relation between them.

The specific embodiment

The working process of the utility model embodiment is: electromagnetism off-load permanent magnet hoisting is hung head suspension on suspension bracket shown in Figure 2, finished by overhead traveling crane or jenny and rise and fall.When suspension bracket falls near big plane steel plate, electromagnetism off-load permanent magnet hoisting hangs an automatic adhesive steel plate and forms closed magnetic circuit crane lifting operation, when crane is transported to the destination with steel plate, when suspension bracket downthrow ground is very near, impose on 4 one instantaneous currents of rectifying circuit by power supply, rectifying circuit 4 offers 3 one reverse instantaneous DC current of magnet coil and produces an electromagnetic field, and instantaneous the falling sharply of permanent magnetic field this moment finished automatic deloading, steel plate falls to the ground automatically, so far finishes a working process.

Claims

1, a kind of electromagnetism off-load permanent magnet hoisting hangs head, comprise permanent magnetism, electromagnetism that inverted U outer yoke 1, ring-like lower yoke cover 2, magnet coil 3, rectifying circuit 4, inverted T shape inner yoke 5, ring-like permanent magnet 6 are formed, the integrated open circuit magnetic circuit of rectifying circuit hangs head, it is characterized in that:

1. tapped blind hole and through hole are corresponding with the axial concentric locating of high-strength adhesive between above-mentioned inverted T shape inner yoke 5, ring-like permanent magnet 6 and inverted U outer yoke 1 three;

2. above-mentioned magnet coil 3 be placed in the cavity that inverted U outer yoke 1 and inverted T shape inner yoke 5 and ring-like permanent magnet 6 form after rectifying circuit 4 is connected in;

3. screw thread cooperates connection between above-mentioned ring-like lower yoke cover 2 axial excircles and inverted U outer yoke 1 lower end inner periphery.

2, a kind of electromagnetism off-load permanent magnet hoisting according to claim 1 hangs head, it is characterized in that the cavity of inverted U outer yoke cover 1, magnet coil 3, inverted T shape inner yoke 5,6 formation of ring-like permanent magnet is reinstated resin embedding location together with rectifying circuit 4 one.

3, a kind of electromagnetism off-load permanent magnet hoisting according to claim 1 hangs head, it is characterized in that ring-like lower yoke 2 internal orifices are conical surface hypotenuse, the lower surface axially place of keeping to the side is established assembling recruitment person ignorant of ABCs in art hole, and the cavity that forms between U type outer yoke cover 1 and magnet coil 3, the inverted T shape inner yoke 5 is with flat mouthful of resin embedding.