JPH08245155A - Lifting gar - Google Patents
Lifting garInfo
- Publication number
- JPH08245155A JPH08245155A JP7072405A JP7240595A JPH08245155A JP H08245155 A JPH08245155 A JP H08245155A JP 7072405 A JP7072405 A JP 7072405A JP 7240595 A JP7240595 A JP 7240595A JP H08245155 A JPH08245155 A JP H08245155A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- pole
- magnet
- state
- magnet body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 16
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000005281 excited state Effects 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鋼材等の磁性体を吸着
及び吊上げて、運搬等に使用する永久磁石式吊上装置に
係り、特に内蔵した永久磁石を回転させることによって
着脱を切り替える装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet type hoisting device for adsorbing and hoisting a magnetic material such as steel and using it for transportation, and more particularly to a device for switching attachment / detachment by rotating a built-in permanent magnet. Regarding
【０００２】[0002]
【従来の技術】従来、この種の吊上装置は、例えば実公
昭６２−３９０２０号に記載されているように、固定さ
れた副磁石を有するヨーク体と回転自在に配置された円
筒磁石体とで構成される。詳述すると、図４に示すよう
に、吊上装置は磁気回路部１と非磁性体からなる磁気遮
断板２を介して磁気回路部を支持し、吊金具部４を有す
る基板３とを有し、これらはボルト５によって一体的に
組立てられている。磁気回路部１は、吸着面６ａ、６ｂ
を各々有し強磁性体よりなる一対のヨーク７ａ、７ｂ
と、これらの間に介在された非磁性スペーサ８ａ、８ｂ
を有すると共に、ヨーク７ａ、７ｂ及び非磁性スペーサ
８ａ、８ｂの間に形成された空孔９を有する。空孔９内
には、外周面に互いに異極性を有する一対のポールピー
ス１１ａ、１１ｂ及び主磁石１０で構成された回転自在
の円筒磁石体１２が配置される。また、非磁性スペーサ
８ａの上部には、一対のヨークと同方向に磁化された副
磁石１３が固定される。2. Description of the Related Art Conventionally, a hoisting device of this type has a yoke body having a fixed sub-magnet and a cylindrical magnet body rotatably arranged, as described in Japanese Utility Model Publication No. 62-39020. Composed of. More specifically, as shown in FIG. 4, the hoisting device includes a magnetic circuit unit 1 and a substrate 3 that supports the magnetic circuit unit via a magnetic blocking plate 2 made of a non-magnetic material and that has a hanging fitting unit 4. However, these are integrally assembled by the bolt 5. The magnetic circuit unit 1 has attracting surfaces 6a and 6b.
A pair of yokes 7a and 7b each having
And the non-magnetic spacers 8a and 8b interposed between them
And has a hole 9 formed between the yokes 7a and 7b and the non-magnetic spacers 8a and 8b. Inside the hole 9, a rotatable cylindrical magnet body 12 including a pair of pole pieces 11a and 11b having different polarities and a main magnet 10 is arranged on the outer peripheral surface. Further, a sub-magnet 13 magnetized in the same direction as the pair of yokes is fixed to the upper portion of the non-magnetic spacer 8a.
【０００３】図４では副磁石１３の紙面右側の磁極はＮ
極、主磁石１０の紙面右側の磁極はＳ極である。副磁石
１３のＮ極より発生した磁力線１５ａ、１６ａ、１７
ａ、１８ａはヨーク７ａ、ポールピース１１ａを通り主
磁石１０を通過した後、反対側のポールピース１１ｂ、
ヨーク７ｂを通り副磁石１３に戻る磁気回路を構成して
いる。すなわち、吸着面６ａ、６ｂは磁力が発生しない
非励磁状態となっているため、被吸着物１４に磁力線が
通過することはなく、吊上機能は働いていない。In FIG. 4, the magnetic pole on the right side of the auxiliary magnet 13 in the drawing is N.
The pole and the magnetic pole on the right side of the drawing of the main magnet 10 are S poles. Magnetic field lines 15a, 16a, 17 generated from the N pole of the sub-magnet 13.
a and 18a pass through the yoke 7a, the pole piece 11a and the main magnet 10, and then the pole piece 11b on the opposite side,
A magnetic circuit that passes through the yoke 7b and returns to the sub magnet 13 is configured. That is, since the attraction surfaces 6a and 6b are in a non-excited state in which no magnetic force is generated, the lines of magnetic force do not pass through the object to be attracted 14 and the lifting function does not work.
【０００４】図４に対し円筒磁石体１２が１８０°回転
した状態を図６に示す。図６では主磁石１０及び副磁石
１３の磁極は共に紙面右側がＮ極であり反発状態となっ
ている。すなわち、吸着面６ａ、６ｂは磁力が発生する
励磁状態となっているため、主磁石１０及び副磁石１３
の紙面右側のＮ極から発生した磁力線１５ａ、１６ａ、
１７ａ、１８ａは、ヨーク７ａ、吸着面６ａを経て被吸
着物１４に入り、反対側の吸着面６ｂ、ヨーク７ｂを通
過した後、主磁石１０及び副磁石１３の紙面左側のＳ極
に戻る磁気回路を構成している。すなわち吊上機能が働
き被吸着物１４を吊り上げることができる。FIG. 6 shows a state in which the cylindrical magnet body 12 is rotated by 180 ° with respect to FIG. In FIG. 6, the magnetic poles of the main magnet 10 and the sub magnet 13 are both N poles on the right side of the drawing and are in a repulsive state. That is, since the attraction surfaces 6a and 6b are in an excited state in which magnetic force is generated, the main magnet 10 and the sub magnet 13 are
Lines 15a, 16a generated from the N pole on the right side of
The magnets 17a and 18a enter the object to be attracted 14 via the yoke 7a and the attracting surface 6a, pass through the attracting surface 6b and the yoke 7b on the opposite side, and then return to the S pole on the left side of the main magnet 10 and the sub magnet 13 in the drawing. It constitutes the circuit. That is, the lifting function works and the object 14 can be lifted.
【０００５】図５に、図４と図６の中間の状態すなわち
図４に対し円筒磁石体１２が９０°回転した状態を示
す。図５では副磁石１３の紙面右側の磁極はＮ極、主磁
石１０の紙面上側の磁極はＳ極である。図５において、
副磁石１３のＮ極より発生した磁力線１５ａは、図６と
同様に被吸着物１４を通過した後副磁石１３のＳ極に戻
る磁気回路を構成している。しかし同様に発生した磁力
線１６ａは、ポールピース１１ａを介して戻る閉磁路を
構成する。また主磁石１０のＮ極（ポールピース１１
ｂ）より発生した磁力線１７ａ、１８ａは、ヨーク７ａ
あるいはヨーク７ｂを通過した後、主磁石１０のＳ極
（ポールピース１１ａ）に戻る閉磁路を構成する。FIG. 5 shows an intermediate state between FIGS. 4 and 6, that is, a state in which the cylindrical magnet body 12 is rotated by 90 ° with respect to FIG. In FIG. 5, the magnetic pole on the right side of the paper of the sub magnet 13 is an N pole, and the magnetic pole on the upper side of the paper of the main magnet 10 is an S pole. In FIG.
The magnetic force line 15a generated from the N pole of the sub magnet 13 constitutes a magnetic circuit that returns to the S pole of the sub magnet 13 after passing through the attracted substance 14 as in FIG. However, the magnetic field lines 16a similarly generated constitute a closed magnetic circuit that returns via the pole piece 11a. The N pole of the main magnet 10 (pole piece 11
Magnetic field lines 17a and 18a generated from b) are generated by the yoke 7a.
Alternatively, it forms a closed magnetic circuit that returns to the S pole (pole piece 11a) of the main magnet 10 after passing through the yoke 7b.
【０００６】一般に磁力で構成される閉磁路接触面では
吸着力が発生する。従って、回転自在に設けられている
円筒磁石体１２の回転を妨げる作用が働くことになり、
特に図５における磁力線１６ａ及び１６ｂで構成される
閉磁路の影響が大きい。In general, an attractive force is generated on the contact surface of the closed magnetic circuit, which is composed of magnetic force. Therefore, an action of hindering the rotation of the cylindrical magnet body 12 that is rotatably provided works.
In particular, the influence of the closed magnetic circuit formed by the magnetic force lines 16a and 16b in FIG. 5 is great.
【０００７】[0007]
【発明が解決しようとする課題】前述した従来の吊上装
置の場合、一般に図４〜６に示すように非磁性スペーサ
の幅寸法はポールピースの幅寸法よりも小さくなってい
る。そのため吸着作業移行時に吊上装置内部に閉磁路を
形成し、円筒磁石体１２の回転が妨げられる結果、円滑
な吸着作業を行なえないという問題点が生じていた。本
発明は、上記従来技術に存在する問題点を解決し、円滑
な吸着作業を可能とする吊上装置を提供することを目的
とする。In the case of the above-described conventional lifting device, the width dimension of the non-magnetic spacer is generally smaller than the width dimension of the pole piece as shown in FIGS. As a result, a closed magnetic path is formed inside the lifting device during the transfer of the suction work, and the rotation of the cylindrical magnet body 12 is hindered, resulting in a problem that the smooth suction work cannot be performed. It is an object of the present invention to solve the problems existing in the above-mentioned conventional techniques and provide a hoisting device that enables a smooth suction operation.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明においては、固定用副磁石及び非磁性体から
なるスペーサを介して対向し、且つ各々が吸着面を有す
る一対のヨークと、前記非磁性スペーサと前記ヨークで
形成された円筒状空孔を有するヨーク体と、前記空孔内
に回転自在に配置された円筒磁石体と、前記円筒磁石体
の外周面に互いに異極性を有する一対のポールピースと
によって構成された磁気回路構造を有する吊上装置にお
いて、前記非磁性スペーサの幅寸法を前記ポールピース
の幅寸法と同等又はそれより大きくする、という技術的
手段を採用した。In order to achieve the above object, in the present invention, a pair of yokes facing each other via a spacer composed of a fixing sub-magnet and a non-magnetic material and each having an attracting surface. , A yoke body having a cylindrical hole formed by the non-magnetic spacer and the yoke, a cylindrical magnet body rotatably arranged in the hole, and different polarities on the outer peripheral surface of the cylindrical magnet body. In the hoisting device having a magnetic circuit structure constituted by a pair of pole pieces, the technical means of making the width dimension of the non-magnetic spacer equal to or larger than the width dimension of the pole pieces is adopted.
【０００９】[0009]
【作用】上記構成によれば、吸着作業移行時において主
磁石１０及び副磁石１３から発生した磁力線は被吸着物
１４を通過し、従来構成されていた吊上装置内部の閉磁
路は発生せず、円滑な吸着作業が可能となる。According to the above structure, the magnetic lines of force generated from the main magnet 10 and the sub magnet 13 at the time of transfer to the attraction work pass through the object to be attracted 14 and the closed magnetic path inside the conventionally constructed lifting device does not occur. It enables smooth suction work.
【００１０】[0010]
【実施例】本発明の実施例を図１に示す。図１におい
て、従来例と同等の機能を有する部分については同一の
参照符号で示し、その詳細な説明は省略する。図１に示
す吊上装置の全体の構成は、図４に示した従来例の構成
と実質的に同一であるが、非磁性スペーサの幅寸法とポ
ールピースの幅寸法との関係が全く異なる。FIG. 1 shows an embodiment of the present invention. In FIG. 1, parts having the same functions as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted. The overall configuration of the hoisting device shown in FIG. 1 is substantially the same as the configuration of the conventional example shown in FIG. 4, but the relationship between the width of the non-magnetic spacer and the width of the pole piece is completely different.
【００１１】図１において、固定された副磁石１３の紙
面右側の磁極はＮ極、回転自在に配置された主磁石１０
の紙面右側の磁極はＳ極であり、副磁石１３と主磁石１
０の磁極の向きは相反している。従って図４と同様に、
副磁石１３のＮ極より発生した磁力線１５ａ、１６ａ、
１７ａ、１８ａは主磁石１０を通過して戻る磁気回路を
構成している。すなわち、吸着面６ａ、６ｂは磁力が発
生しない非励磁状態となっているため、被吸着物１４に
磁力線が通過することはなく、吊上機能は働いていな
い。In FIG. 1, the fixed sub-magnet 13 has a magnetic pole on the right side of the drawing as an N-pole, and the main magnet 10 is rotatably arranged.
The magnetic pole on the right side of the drawing is the S pole, and the sub magnet 13 and the main magnet 1
The directions of the zero magnetic poles are opposite. Therefore, as in FIG.
Magnetic field lines 15a, 16a generated from the N pole of the sub magnet 13,
Reference numerals 17a and 18a constitute a magnetic circuit which passes through the main magnet 10 and returns. That is, since the attraction surfaces 6a and 6b are in a non-excited state in which no magnetic force is generated, the lines of magnetic force do not pass through the object to be attracted 14 and the lifting function does not work.
【００１２】図１に対し円筒磁石体１２が１８０°回転
した状態を図３に示す。図３では主磁石１０及び副磁石
１３の磁極は共に紙面右側がＮ極であり反発状態となっ
ている。従って図６と同様に、吸着面６ａ、６ｂは磁力
が発生する励磁状態となり、被吸着物を吸着可能な状態
である。主磁石１０及び副磁石１３の紙面右側のＮ極か
ら発生した磁力線１５ａ、１６ａ、１７ａ、１８ａは、
被吸着物１４を通過した後、主磁石１０及び副磁石１３
の紙面左側のＳ極に戻る磁気回路を構成している。すな
わち吊上機能が働き被吸着物１４を吊り上げることがで
きる。FIG. 3 shows a state in which the cylindrical magnet body 12 is rotated by 180 ° with respect to FIG. In FIG. 3, the magnetic poles of the main magnet 10 and the sub magnet 13 are both N poles on the right side of the drawing and are in a repulsive state. Therefore, as in FIG. 6, the attraction surfaces 6a and 6b are in an excited state in which magnetic force is generated, and are in a state capable of attracting an object to be attracted. Magnetic force lines 15a, 16a, 17a, 18a generated from the N poles of the main magnet 10 and the sub magnet 13 on the right side of the drawing are,
After passing through the attracted object 14, the main magnet 10 and the sub magnet 13
A magnetic circuit returning to the S pole on the left side of the paper. That is, the lifting function works and the object 14 can be lifted.
【００１３】図２に、図１と図３の中間の状態すなわち
図１に対し円筒磁石体１２が９０°回転した状態を示
す。図２では副磁石１３の紙面右側の磁極はＮ極、主磁
石１０の紙面上側の磁極はＳ極である。図２において、
ポールピース１１ａ、１１ｂの幅寸法が非磁性スペーサ
８ａ、８ｂの幅寸法よりも小さいため、図５に示したよ
うな副磁石１３のＮ極より発生した磁力線の一部がポー
ルピース１１ａを介して戻る閉磁路は構成しない。同様
に、主磁石１０のＮ極（ポールピース１１ｂ）より発生
した磁力線がヨーク７ａあるいはヨーク７ｂを通過して
戻る閉磁路も構成しない。従って、閉磁路の発生に伴う
円筒磁石体１２の回転を妨げる作用が生じることはな
く、円滑な吸着作業が可能となる。FIG. 2 shows an intermediate state between FIGS. 1 and 3, that is, a state in which the cylindrical magnet body 12 is rotated by 90 ° with respect to FIG. In FIG. 2, the magnetic pole on the right side of the paper of the sub magnet 13 is an N pole, and the magnetic pole on the upper side of the paper of the main magnet 10 is an S pole. In FIG.
Since the width dimensions of the pole pieces 11a, 11b are smaller than the width dimensions of the non-magnetic spacers 8a, 8b, some of the magnetic force lines generated from the N pole of the sub magnet 13 as shown in FIG. There is no closed closed magnetic path. Similarly, a closed magnetic circuit in which magnetic lines of force generated from the N pole (pole piece 11b) of the main magnet 10 pass through the yoke 7a or the yoke 7b and return is not formed. Therefore, the action of hindering the rotation of the cylindrical magnet body 12 due to the generation of the closed magnetic circuit does not occur, and the smooth attracting work can be performed.
【００１４】本発明において、円筒磁石及び副磁石は、
公知の磁石材料（フェライト磁石、アルニコ磁石、希土
類磁石等）で形成すればよいが、小型でしかも高い吸着
力を得るためには、最大エネルギー積の大きい希土類・
鉄・ボロン系磁石を用いることが望ましい。In the present invention, the cylindrical magnet and the sub magnet are
It may be formed of a known magnet material (ferrite magnet, alnico magnet, rare earth magnet, etc.), but in order to obtain a small size and a high attraction force, a rare earth / large earth energy product
It is desirable to use iron / boron magnets.
【００１５】[0015]
【発明の効果】本発明は以上記述したように、非磁性ス
ペーサの幅寸法をポールピースの幅寸法より大きくある
いは等しく設けることにより、円筒磁石体の回転を妨げ
る作用を持つ閉磁路の発生を防止し、円滑な吸着作業が
可能となる。As described above, according to the present invention, the width dimension of the non-magnetic spacer is set to be larger than or equal to the width dimension of the pole piece to prevent the generation of the closed magnetic circuit having the function of hindering the rotation of the cylindrical magnet body. As a result, smooth suction work is possible.
【図１】本発明の実施例に係る吊上装置の非励磁状態を
示す正面図である。FIG. 1 is a front view showing a non-excited state of a lifting device according to an embodiment of the present invention.
【図２】本発明の実施例に係る吊上装置の非励磁状態と
励磁状態の中間状態を示す正面図である。FIG. 2 is a front view showing an intermediate state between a non-excited state and an excited state of the lifting device according to the embodiment of the present invention.
【図３】本発明の実施例に係る吊上装置の励磁状態を示
す正面図である。FIG. 3 is a front view showing an excited state of the lifting device according to the embodiment of the present invention.
【図４】従来の吊上装置の非励磁状態を示す正面図であ
る。FIG. 4 is a front view showing a non-excited state of a conventional hoisting device.
【図５】従来の吊上装置の非励磁状態と励磁状態の中間
状態を示す正面図である。FIG. 5 is a front view showing an intermediate state between a non-excited state and an excited state of a conventional hoisting device.
【図６】従来の吊上装置の励磁状態を示す正面図であ
る。FIG. 6 is a front view showing an excited state of a conventional hoisting device.
１…ヨーク体、２、…磁気遮断板、３…基板、４…吊金
具部、５…ボルト、６ａ、６ｂ…吸着面、７ａ、７ｂ…
ヨーク、８ａ、８ｂ…非磁性スペーサ、９…空孔、１０
…主磁石、１１ａ、１１ｂ…ポールピース、１２…円筒
磁石体、１３…副磁石、１４…被吸着物、１５ａ、１５
ｂ、１６ａ、１６ｂ、１７ａ、１７ｂ、１８ａ、１８ｂ
…磁力線DESCRIPTION OF SYMBOLS 1 ... Yoke body, 2 ... Magnetic-shielding plate, 3 ... Board | substrate, 4 ... Hanging metal fitting part, 5 ... Bolt, 6a, 6b ... Adsorption surface, 7a, 7b ...
Yoke, 8a, 8b ... Non-magnetic spacer, 9 ... Hole, 10
... Main magnet, 11a, 11b ... Pole piece, 12 ... Cylindrical magnet body, 13 ... Sub magnet, 14 ... Adsorption target, 15a, 15
b, 16a, 16b, 17a, 17b, 18a, 18b
… Magnetic field lines
Claims (1)
ーサを介して対向し、且つ各々が吸着面を有する一対の
ヨークと、前記非磁性スペーサと前記ヨークで形成され
た円筒状空孔を有するヨーク体と、前記空孔内に回転自
在に配置された円筒磁石体と、前記円筒磁石体の外周面
に互いに異極性を有する一対のポールピースとによって
構成された磁気回路構造を有する吊上装置において、 前記非磁性スペーサの幅寸法を前記ポールピースの幅寸
法と同等又はそれより大きくしたことを特徴とする吊上
装置。1. A pair of yokes, which face each other with a fixing sub-magnet and a spacer made of a non-magnetic material, each having an attracting surface, and a cylindrical hole formed by the non-magnetic spacer and the yoke. A suspension having a magnetic circuit structure composed of a yoke body having the same, a cylindrical magnet body rotatably arranged in the hole, and a pair of pole pieces having different polarities on the outer peripheral surface of the cylindrical magnet body. In the device, the width dimension of the non-magnetic spacer is equal to or larger than the width dimension of the pole piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07240595A JP3517476B2 (en) | 1995-03-06 | 1995-03-06 | Lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07240595A JP3517476B2 (en) | 1995-03-06 | 1995-03-06 | Lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08245155A true JPH08245155A (en) | 1996-09-24 |
| JP3517476B2 JP3517476B2 (en) | 2004-04-12 |
Family
ID=13488351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07240595A Expired - Fee Related JP3517476B2 (en) | 1995-03-06 | 1995-03-06 | Lifting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3517476B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100703934B1 (en) * | 2006-06-14 | 2007-04-04 | 서동우 | Magnetic moving device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03293292A (en) * | 1990-04-12 | 1991-12-24 | Fuji Jikou Kk | Permanent magnet type attraction device |
-
1995
- 1995-03-06 JP JP07240595A patent/JP3517476B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03293292A (en) * | 1990-04-12 | 1991-12-24 | Fuji Jikou Kk | Permanent magnet type attraction device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100703934B1 (en) * | 2006-06-14 | 2007-04-04 | 서동우 | Magnetic moving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3517476B2 (en) | 2004-04-12 |
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