CN2128242Y

CN2128242Y - Translation type rare-earth permanent-magnet crane

Info

Publication number: CN2128242Y
Application number: CN 91209735
Authority: CN
Inventors: 关品三; 韩中凡; 王樱
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 1991-06-12
Filing date: 1991-06-12
Publication date: 1993-03-17
Anticipated expiration: 2001-06-12

Abstract

The utility model discloses a craning device which is made of new material by using new technology. The translation type rare-earth permanent-magnet crane mainly comprises a non-magnetic steel craning housing, a lower magnet group which comprises a permanent magnet and a magnetic yoke, a non-magnetic steel tank bracket, and an upper magnet group which comprises a permanent magnet and a magnetic yoke. A translation guiding sliding track is arranged between the two magnet groups, and both ends of the non-magnetic steel tank bracket are respectively provided with a limiting sensor, a driving motor, gears, a gear rack, a chain, etc. A closed magnetic loop is formed when the relative translation of the two magnet groups is carried out, and ferromagnetic weight is unloaded. The weight is sucked if the magnetic poles are superimposed. The translation type rare-earth permanent-magnet crane can suck large weight and change the number of the sucked weight, and the magnetic induction density of the surfaces of the magnetic yokes tends to zero. The translation type rare-earth permanent-magnet crane has the advantage of long service life.

Description

Translation type rare-earth permanent-magnet crane

The weight-lifting equipment that the utility model genus uses of the new technology, new material is made.

At present, the suction of domestic and international existing permanent magnet hoisting equipment is heavy, and magnetic source---permanent magnet all adopts low performance materials such as strontium calcium ferrite, alnico magnet, with the afterburning magnetic circuit that changes of simple and crude machinery; Also have and use ancillary coil energising excitation and change mode such as magnetic field and realize that the suction in the lifting process heavily unloads heavy; Also useful rotary type permanent magnet makes a magnetic group rotate around anchor shaft and causes the short circuit of work magnetic flux, reaches the purpose of laying down weight.

It is as follows that the contriver had once consulted the data of keeping to the point both at home and abroad:

(1) 1, nationality: Britain

2, the patent No.: 8531752

3, open day: on January 24th, 87

4, patent name: the magnetic refitting is put

5, patentee: IMADOS

(2) 1, nationality: Britain

2, the patent No.: 8811916

3, open day: on December 7th, 88

4, patent name: the magnetic hoisting device of ferromagnetic weight thing

5, patentee: Josef Darid Baumann.

(3) 1, nationality: the Soviet Union

2, the patent No.: 42009448140-11

3, open day: on August 23rd, 88

4, patent name: power weight-lifting equipment

5, patentee: AZ Wei Kexi

(4) 1, nationality: the Soviet Union

2, the patent No.: 4340683/25-11

3, open day: on December 7th, 89

4, patent name: magnet crane

5, patentee: HA machine building works

(5) 1, nationality: China

2, the patent No.: 892091479

3, patent name: rotary type rare earth permanent magnet hoisting permanent magnet

4, patentee: willow is clear

(6) 1, nationality: China

2, title: practical lifting handbook (P94)

3, author: in the monarch position

4, press: press of Ministry of Water Resources and Electric Power

5, issuing date: in September, 1989

With the immediate weight-lifting equipment of the utility model is " rotary type rare earth permanent magnet hoisting permanent magnet ".The magnetic group that makes a permanent magnet is rotated around anchor shaft and is caused the magnetic flux short circuit to lay down weight.The shortcoming of this permanent magnet weight-lifting equipment is: inhale (1), magnetic induction changes not quite when unloading weight, and firmization of ferromagnetic object that influence is inhaled reduced permanent magnetism and inhaled Beijing South Maxpower Technology Co. Ltd's power; (2) owing to adopt the short circuit of rotary type mechanical control magnetic group, the expense power consumption is big, and efficient is not high; (3) the permanent magnet protection is not good, easily oxidized, hydrogenation, and magnetic loss is serious, makes the magnetic hoisting hook life-span short, shorter in coastal dock, Craft in Chemical Industrial Area and plum rain season magnetic hoisting hook life-span especially.

The purpose of this utility model is the shortcoming that overcomes prior art.Design and inhale the rare-earth permanent magnet hoisting hook that Beijing South Maxpower Technology Co. Ltd's power is strong, efficient is high, the life-span is long.

Structural principle of the present utility model as shown in Figure 1 and Figure 2.Fig. 1 is the heavy situation of unloading, and Fig. 2 is for inhaling heavy situation.Among Fig. 1, Fig. 2,1 is yoke, divides left and right two; 2 is permanent magnet, divides upper and lower two, is clipped in the middle of two yokes 1, and its magnetic pole is inhaled mutually with yoke 1 and connect; 3 is the ferrimagnetism weight.

As seen from Figure 1, when the magnetic pole reversed arrangement of upper and lower two permanent magnets 2, two permanent magnets 2 and two yokes 1 constitute closed magnetic loops.Promptly the situation of magnetic line of force as shown in fig. 1 (dotted line among Fig. 1) does not externally show magnetic.As long as the magnetic resistance of closed magnetic loop is very little, then the running surface magnetic field of yoke 1 goes to zero.Fig. 2 puts upside down the magnetic pole of a permanent magnet 2 once, and same yoke 1 follows the same pole of two permanent magnets 2 to contact.Like this, the magnetic field of two permanent magnets 2 is superposeed mutually, resemble the situation of magnetic line of force shown in Figure 2 (dotted line), the ferrimagnetism weight is inhaled on two yokes 1, the suction of generation is very big.

Concrete structure of the present utility model is provided by Fig. 3, Fig. 4.Fig. 3 is an integral structure section-drawing when laying down the ferrimagnetism weight; Fig. 4 is an integral structure section-drawing when attracting the ferrimagnetism weight.Among Fig. 3 and Fig. 4,2 is permanent magnet, the termination of permanent magnet 2 is equipped with yoke 1 respectively, 3 is the ferrimagnetism weight, and 5 are following magnetic group, and 6 is last magnetic group, two magnetic groups constitute by yoke 1 and the permanent magnet 2 alternate frameworks that are embedded in, the relative arrangement of like pole of the permanent magnet 2 in each magnetic group and adjacent permanent magnet 2, promptly N is extremely to the N utmost point, and S is extremely to the S utmost point.7 for inhaling heavily translation limit sensors, and 8 is last magnetic framing, and 9 are the translation tooth bar, 10 are the translation transmission gear, and 11 is drive motor, and 12 is chain, 13 for unloading heavily translation limit sensors, and 14 is directive slide track, and last magnetic framing 8 is installed on it so that the translation that horizontally slips.15 for hanging shell, made by nonmagnetic steel.Following magnetic group 5 is fixedly mounted on hangs on the shell 15.16 is corrosion protective covering, is added on the surface of magnetic group 6 and following magnetic group 5.Permanent magnet 2 adopts High Performance, high HCJ, high-Curie-point rare earth permanent-magnetic material nd-fe-b or 2:17 rare-earth permanent magnet or samarium praseodymium cobalt rare-earth permanent magnet etc. to make.Yoke 1 by a permanent magnet 2 and two ends constitutes the unit composite permanent magnet, and each unit composite permanent magnet is inhaled great in 5 tons.Last magnetic group 6 and following magnetic group 5 are made up of the unit composite permanent magnet of equal number respectively.If last magnetic group 6 and following magnetic group 5 are made up of 10 unit composite permanent magnets respectively, the standard suction is heavy can to reach 50 tons greatly.

Last magnetic framing 8 also is to make with nonmagnetic steel.Inhale heavily translation limit sensors 7 and unload heavily translation limit sensors 13, the translation distance that is used for controlling magnetic group 6 is controlled the size of suction Beijing South Maxpower Technology Co. Ltd power simultaneously.Translation tooth bar 9 is installed on the magnetic group 6, can translation in last magnetic framing 8, and translation tooth bar 9 is caught up with the 6 parallel installations of magnetic group.Translation transmission gear 10 matches with translation tooth bar 9.Drive motor 11, chain 12 and translation transmission gear 10 are used for magnetic group 6 and descend 5 translations of magnetic group relatively on directive slide tracks 14.

Fig. 4 is for inhaling heavy situation, reach maximum position of inhaling Beijing South Maxpower Technology Co. Ltd's power after last magnetic group 6 translations, at this moment the magnetic circuit of each units corresponding composite permanent magnet is superimposed, as shown in phantom in Figure 4, magnetic axis 1 is inhaled heavy industry and is made surperficial magnetic-field intensity maximum, and ferrimagnetism Beijing South Maxpower Technology Co. Ltd is enough brought into play the highest attraction function.

The utility model is unloading heavy state, and yoke is inhaled heavy surface induction intensity and gone to zero, and can not inhale light little iron filings, and the little iron filings of 0.03 gram all can not be inhaled.Change the size of inhaling the tuple amount by the big I of regulating translation distance.Owing to added corrosion protective covering 16, can reduce magnetic loss, increase the service life.

Claims

1, a kind of parallel-moving type rare earth permanent magnet hoisting hook, mainly by hang shell 15, go up magnetic framing 8, be installed in translation tooth bar 9 on the magnetic group frame 8, and the translation transmission gear 10 that matches of translation tooth bar 9, drive motor 11, chain 12 etc. constitute, it is characterized in that,

(1) on last magnetic framing 8 magnetic group 6 is housed, down magnetic group 5 is housed hanging on the shell 15, they are made up of the unit composite permanent magnet that the yoke 1 by permanent magnet 2 and two ends thereof of equal number constitutes respectively; Last magnetic group 6 is with the 9 parallel installations of translation tooth bar, under translation tooth bar 9 drives with respect to magnetic group 5 translations down;

(2) the relative arrangement of like pole of each permanent magnet 2 of going up magnetic group 6 and adjacent permanent magnet 2, promptly N is extremely to the N utmost point, and S is extremely to the S utmost point, and following magnetic group 5 also is like this.

2, according to the described parallel-moving type rare earth permanent magnet of claim 1 hoisting hook, it is characterized in that saidly going up magnetic group 6 and following magnetic group 5 is made up of 10 unit composite permanent magnets respectively, make its suction weigh 50 tons.

3,, it is characterized in that adding corrosion protective covering on the surface of last magnetic group 6 and following magnetic group 5 according to claim 1,2 described parallel-moving type rare earth permanent magnet hoisting hooks.