High-pressure-resistant moving-magnet type bidirectional proportional electromagnet

A proportional electromagnet and moving magnet technology, applied in the fields of electro-hydraulic servo valve, high-pressure moving magnet bidirectional proportional electromagnet, and electro-mechanical converter for proportional valve, which can solve problems such as inability to work and inability to achieve proportional control. , to achieve the effect of improving output force, simple structure and low manufacturing cost

CN103606431AInactive Publication Date: 2014-02-26ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-02-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a high-pressure-resistant moving-magnet type bidirectional proportional electromagnet which comprises push rods, yokes, a shell, control coils, a first permanent magnet, a magnetic conduction ring, an armature, a second permanent magnet, limiting plates, guide sleeves and non-magnetic rings. Flanges of the yokes are matched with inner holes of the guide sleeves, and the three guide sleeves are magnetic conductors, are separated from one another by the non-magnetic rings made of non-magnetic-conduction materials and then are integrated with one another by means of welding. Compared with the prior art, the high-pressure-resistant moving-magnet type bidirectional proportional electromagnet has the advantages that the permanent magnets are used as main moving components, so that the shortcoming of constraints due to magnetic saturation and the like can be overcome, and outputted force of a system can be greatly increased; the outputted force or displacement can be bidirectionally and continuously controlled, and zero positions and dead zones can be prevented; the high-pressure-resistant moving-magnet type bidirectional proportional electromagnet is high-oil-pressure-resistant and can be used as a wet electro-mechanical converter; the high-pressure-resistant moving-magnet type bidirectional proportional electromagnet is simple in structure and low in manufacturing cost.
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Description

technical field

[0001] The invention relates to an electro-mechanical converter for an electro-hydraulic servo valve and a proportional valve in the field of fluid control, in particular to a high-voltage-resistant moving magnet bidirectional proportional electromagnet. Background technique

[0002] Proportional electromagnets can convert input electrical signals into force or displacement output, and are the core components of electro-hydraulic servo / proportional control systems, but traditional proportional electromagnets can only provide unidirectional drive output. Invention patent CN10155281B discloses a permanent magnet operating mechanism that uses two sets of coils to alternately energize to achieve linear reciprocating motion, but it cannot achieve proportional control and cannot work in an oil pressure environment; invention patent CN1258775C discloses a permanent magnet operating mechanism that uses permanent magnet The proportional electromagnet that can be optim...

Examples

Embodiment Construction

[0018] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Such as Figure 1 ~ Figure 3 As shown, the high-voltage resistant moving magnet type bidirectional proportional electromagnet of the present invention includes push rods 1, 11, yoke irons 2, 10, housing 3, control coils 4, 8, first permanent magnet 5, magnetic conduction ring 6, Armature 7, the second permanent magnet 9, limit pieces 12,17, guide sleeves 13,15,18, magnetic isolation rings 14,16. The housing 3, the yokes 2, 10, the armature 7, and the guide sleeves 13, 15, 18 are all magnetizers.

[0020] The shell 3 is a hollow shell, the two ends are connected with the yokes 2, 10, the flanges of the yokes 2, 10 are matched with the inner holes of the guide sleeves 13, 15, 18, and the guide sleeves 13, 15, 18 are non-guided The magnetic isolation rings 14 and 16 made of magnetic material are separated and welde...