CN108231326A - 一种减少剩磁的永磁起重装置 - Google Patents

一种减少剩磁的永磁起重装置 Download PDF

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Publication number
CN108231326A
CN108231326A CN201611149815.1A CN201611149815A CN108231326A CN 108231326 A CN108231326 A CN 108231326A CN 201611149815 A CN201611149815 A CN 201611149815A CN 108231326 A CN108231326 A CN 108231326A
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CN
China
Prior art keywords
yoke
remanent magnetism
coil
permanent magnet
lifting device
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.)
Pending
Application number
CN201611149815.1A
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English (en)
Inventor
夏小舒
熊禾根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Science and Engineering WUSE
Wuhan University of Science and Technology WHUST
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Wuhan University of Science and Engineering WUSE
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Application filed by Wuhan University of Science and Engineering WUSE filed Critical Wuhan University of Science and Engineering WUSE
Priority to CN201611149815.1A priority Critical patent/CN108231326A/zh
Publication of CN108231326A publication Critical patent/CN108231326A/zh
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means
    • B66C1/06—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means electromagnetic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0257—Lifting, pick-up magnetic objects
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • H01F2007/208—Electromagnets for lifting, handling or transporting of magnetic pieces or material combined with permanent magnets

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

本发明涉及一种减少剩磁的永磁起重装置，其主要包括磁轭、永磁体、线圈、黄铜；所述磁轭共两个，包括左磁轭、右磁轭，且呈左右对称分布；所述线圈固定在所述永磁体外表面，且在所述磁轭与所述黄铜形成空腔内360°范围内转动。本装置不仅能实现吸吊安全可靠、卸载方便，而且能消除起重装置表面的剩磁。

Description

一种减少剩磁的永磁起重装置
技术领域
本发明涉及磁力起重装置，具体涉及一种减少剩磁的永磁起重装置。
背景技术
永磁起重装置的研宄是一项非常有前景的工作，随着高性能稀土永磁材料的快速发展，使得永磁起重代替电磁电磁起重成为可能。永磁起重吸盘的基本思想是：在吸吊作业过程中，不需要通电流，靠永磁体的强大吸力来吸吊铁磁材料工件，更重要的是不存在因停电而发生安全事故的问题。因此，相比传统的电磁起重，永磁起重的最大优点是节能。
但是，永磁起重装置在卸载时也存在漏洞。例如，永磁起重主要由永磁体、工业纯铁和黄铜镶嵌组成，由于工业纯铁的磁滞存在的剩磁现象，容易在磁极表面吸附铁屑，致使起重装置在下一次使用时其磁力会得到削减,从而导致吸引重物不牢使得作业的可靠性和安全性不好。这是一个摆在业内急需解决的问题，虽然国内已经有一些解决方法，但是效果不是很好。
因此市场上开发一种减少剩磁的永磁起重装置是非常必要的。
发明内容
本发明的主要目的是提供一种减少剩磁的永磁起重装置，本发明不仅能实现吸吊安全可靠、卸载方便，而且能消除起重装置表面的剩磁，确保其表面无铁屑。
为达到上述目的，发明采取以下技术方案：一种减少剩磁的永磁起重装置，其特征在于：其主要包括磁轭、永磁体、线圈、黄铜；所述磁轭共两个，包括左磁轭、右磁轭，且呈左右对称分布；所述线圈固定在所述永磁体外表面，且在所述磁轭与所述黄铜形成空腔内360°范围内转动。
本发明的优点在于：本装置通过设置一组转动的永磁体和线圈，当永磁体和线圈转动90°，且与黄铜接触时，可实现铁磁材料工件被快速卸载，同时通以针对线圈通一定的反向电流，使其产生的电磁通来减弱永磁起重装置中的剩磁。
附图说明
图1为本发明吸载废钢整体结构示意图。
图2为本发明卸载废钢整体结构示意图。
具体实施方式
以下结合附图对本发明作进一步详细说明。
参照图1至图2，本发明提供了一种减少剩磁的永磁起重装置，其特征在于：其主要包括磁轭1、永磁体2、线圈3、黄铜4；所述磁轭1共两个，包括左磁轭11、右磁轭12，且呈左右对称分布；所述线圈3固定在所述永磁体2外表面，且在所述磁轭1与所述黄铜4形成空腔内360°范围内转动。
本发明的工作原理如下：当永磁体2和线圈3转到图1位置时，线圈3不通电，永磁体2产生的磁通经过工件5形成闭合回路，此时起重装置处于吸吊作业状态。当永磁体2和线圈3转到图2位置时，永磁体2产生的磁通大部分被黄铜4切断断，少量经过工件5，为了消除永磁起重装置的剩磁，针对线圈2通以一定的反向电流，使其产生的电磁通来减小该装置中的剩磁，此时起重装置处于为卸载状态。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关领域，均同理包括在本发明的专利保护范围内。

Claims (1)

1.一种减少剩磁的永磁起重装置，其特征在于：其主要包括磁轭、永磁体、线圈、黄铜；所述磁轭共两个，包括左磁轭、右磁轭，且呈左右对称分布；所述线圈固定在所述永磁体外表面，且在所述磁轭与所述黄铜形成空腔内360°范围内转动。
CN201611149815.1A 2016-12-14 2016-12-14 一种减少剩磁的永磁起重装置 Pending CN108231326A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110143437A (zh) * 2019-06-04 2019-08-20 恒钛(天津)机械制造有限公司 一种利用永磁体运料的装置
KR102364518B1 (ko) * 2021-06-07 2022-02-18 한국전기연구원 회전자가 구비된 마그네틱 리프트
WO2023191234A1 (ko) * 2022-03-29 2023-10-05 주식회사 상영마그네트 마그네틱 리프트 장치

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110143437A (zh) * 2019-06-04 2019-08-20 恒钛(天津)机械制造有限公司 一种利用永磁体运料的装置
KR102364518B1 (ko) * 2021-06-07 2022-02-18 한국전기연구원 회전자가 구비된 마그네틱 리프트
WO2023191234A1 (ko) * 2022-03-29 2023-10-05 주식회사 상영마그네트 마그네틱 리프트 장치

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Application publication date: 20180629