CN204419939U - A kind of convergent magnetic field type permanent magnetism safety brake - Google Patents

A kind of convergent magnetic field type permanent magnetism safety brake Download PDF

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Publication number
CN204419939U
CN204419939U CN201420826558.0U CN201420826558U CN204419939U CN 204419939 U CN204419939 U CN 204419939U CN 201420826558 U CN201420826558 U CN 201420826558U CN 204419939 U CN204419939 U CN 204419939U
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China
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metal magnetic
magnetic conducting
inner core
urceolus
described metal
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CN201420826558.0U
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Chinese (zh)
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刘德良
毛长雨
陈立铭
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TIANJIN UHT SCIENCE AND TECHNOLOGY Co Ltd
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TIANJIN UHT SCIENCE AND TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a kind of convergent magnetic field type permanent magnetism safety brake, comprise relative stators and rotators, rotor is provided with armature, stator comprises metal magnetic conducting urceolus and metal magnetic conducting inner core, therebetween annular space is formed, coil is provided with in annular space, coil is fixed in insulated coil skeleton, the end face of insulated coil skeleton is lower than the barrel end face of metal magnetic conducting inner core, the barrel end face of metal magnetic conducting inner core is lower than the barrel end face of metal magnetic conducting urceolus, the barrel end face of metal magnetic conducting urceolus forms stator rubbing surface, stator rubbing surface is relative with armature, the end face of metal magnetic conducting inner core is provided with groove, the internal diameter of groove is greater than the internal diameter of armature, the barrel top cylindrical of metal magnetic conducting urceolus is provided with shoulder, the internal diameter of shoulder is greater than the external diameter of armature.The utility model can make break reduce volume, saves the consumption of permanent magnet and coil, reduces manufacture cost, and can avoid the problem of the braking moment instability caused because of stators and rotators decentraction.

Description

A kind of convergent magnetic field type permanent magnetism safety brake
Technical field
The utility model relates to a kind of break, particularly relates to a kind of convergent magnetic field type permanent magnetism safety brake.
Background technique
Traditional permanent magnetism safety brake due to stator internal-and external diameter equal with armature internal-and external diameter, and the cross section of magnetic conduction inner/outer tube remains consistent in the axial direction, causes magnetic field to restrain.Under identical suction, enlarging section is long-pending will strengthen magnetic flux, reduce sectional area and magnetic resistance will be caused to increase, and this increases causing the consumption of permanent magnet increasing and coil, and break volume strengthens, and cost increases.And stator because the factors such as manufacture, assembly precision cause, rotor decentraction cannot be avoided the impact of break magnetic circuit, cause the braking moment of break unstable.
Summary of the invention
The utility model provides a kind of convergent magnetic field type permanent magnetism safety brake for solving in known technology the technical problem that exists, when suction is identical, this break can reduce volume, save the consumption of permanent magnet and coil, reduce manufacture cost, and the problem of the braking moment instability caused because of stators and rotators decentraction can be avoided.
The technological scheme that the utility model is taked for the technical problem existed in solution known technology is: a kind of convergent magnetic field type permanent magnetism safety brake, comprise relative stators and rotators, described rotor comprises armature and adpting flange, described armature is annular, described armature is sleeved on described adpting flange, and the two relative end face is connected by springs, described stator comprises metal magnetic conducting urceolus and metal magnetic conducting inner core, described metal magnetic conducting inner core is contained in described metal magnetic conducting urceolus, the two is connected by permanent magnet, annular space is formed between the barrel of described metal magnetic conducting inner core and the barrel of described metal magnetic conducting urceolus, coil is provided with in described annular space, described coil is fixed in insulated coil skeleton, described insulated coil skeleton is fixed in described annular space, the end face of described insulated coil skeleton is lower than the barrel end face of described metal magnetic conducting inner core, the barrel end face of described metal magnetic conducting inner core is lower than the barrel end face of described metal magnetic conducting urceolus, the barrel end face of described metal magnetic conducting urceolus forms stator rubbing surface, described stator rubbing surface is relative with described armature, the end face of described metal magnetic conducting inner core is provided with groove, the internal diameter of described groove is greater than the internal diameter of described armature, the barrel top cylindrical of described metal magnetic conducting urceolus is provided with shoulder, the internal diameter of described shoulder is greater than the external diameter of described armature.
Described springs is fixed in the counterbore be located on described adpting flange.
Described metal magnetic conducting urceolus is provided with the bottom of band hollow structure, and described metal magnetic conducting inner core is provided with the outward extending bottom of barrel from described metal magnetic conducting inner core; Described permanent magnet is patty, comprise circumferentially uniform polylith, described permanent magnet is inlaid on annular insulating permanent magnet iron skeleton, described permanent magnet clamps between the bottom of described metal magnetic conducting urceolus and the bottom of described metal magnetic conducting inner core, together with the bottom of described metal magnetic conducting urceolus, described insulating permanent magnet iron skeleton are connected by screw with the bottom of described metal magnetic conducting inner core; Annulus is formed between the bottom of described metal magnetic conducting urceolus and the barrel of described metal magnetic conducting inner core; Described insulated coil skeleton is fixed on the bottom of described metal magnetic conducting inner core.
Described insulating permanent magnet iron skeleton is provided with the flange stretched in described annulus.
Described armature is fixedly connected with described springs by rivet.
The advantage that the utility model has and good effect are: by shrinking in magnetic conduction, urceolus is near the area of armature part, magnetic conduction urceolus is less than armature external diameter near the diameter of armature part, magnetically conducting inner tube is greater than armature internal diameter near the internal diameter of armature part, increase the magnetic induction intensity of stators and rotators contact segment, reduce overall magnetic circuit magnetic induction intensity and magnetic resistance, improve permanent magnetic attraction, the volume of break can be reduced, save the consumption of permanent magnet and coil, reduce manufacture cost, and traditional permanent magnetism safety brake can be avoided to cause stators and rotators decentraction on the impact of break magnetic circuit due to factors such as assembly precisions, ensure the stability of break product braking moment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, screw, 2, magnetically conducting inner tube, 3, insulating permanent magnet iron skeleton, 4, magnetic conduction urceolus, 5, insulated coil skeleton, 6, coil, 7, rivet, 8, springs, 9, armature, 10, adpting flange, 11, permanent magnet.
Embodiment
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of convergent magnetic field type permanent magnetism safety brake, comprises relative stators and rotators, described rotor comprises armature 9 and adpting flange 10, described armature 9 is annular, and described armature 9 is sleeved on described adpting flange 10, and the two relative end face is connected by springs 8, described stator comprises metal magnetic conducting urceolus 4 and metal magnetic conducting inner core 2, described metal magnetic conducting inner core 2 is contained in described metal magnetic conducting urceolus 4, the two is connected by permanent magnet 11, annular space is formed between the barrel of described metal magnetic conducting inner core 2 and the barrel of described metal magnetic conducting urceolus 4, coil 6 is provided with in described annular space, described coil 6 is fixed in insulated coil skeleton 5, described insulated coil skeleton 5 is fixed in described annular space, the end face of described insulated coil skeleton 5 is lower than the barrel end face of described metal magnetic conducting inner core 2, the barrel end face of described metal magnetic conducting inner core 2 is lower than the barrel end face of described metal magnetic conducting urceolus 4, the barrel end face of described metal magnetic conducting urceolus 4 forms stator rubbing surface, described stator rubbing surface is relative with described armature 9, the end face of described metal magnetic conducting inner core 2 is provided with groove, the internal diameter of described groove is greater than the internal diameter of described armature 9, the barrel top cylindrical of described metal magnetic conducting urceolus 4 is provided with shoulder, the internal diameter of described shoulder is greater than the external diameter of described armature 9.
The permanent magnet circuit be made up of magnetically conducting inner tube 2, permanent magnet 11, magnetic conduction urceolus 4 and armature 8 during power-off brake produces permanent magnetic attraction, and armature 9 is inhaled to magnetic conduction urceolus 4 by permanent magnetic attraction, and under the effect of permanent magnetic attraction, produce frictional force formation braking moment.Because magnetic conduction urceolus main body portion diameter is greater than the diameter of magnetic conduction urceolus near armature part, magnetically conducting inner tube main body portion diameter is less than the diameter of magnetically conducting inner tube near armature part, when stators and rotators decentraction, magnetic conductive area can remain unchanged, effectively can eliminate the stator because a variety of causes causes, rotor decentraction to the impact of permanent magnetic circuit, ensure the stability of break product braking moment.The utility model can reduce the ferromagnetic resistance of break effectively, effectively can reduce permanent magnet and coil consumption under equal suction, reduces break volume.
In order to be suitable for damped condition better, permanent magnet is preferably made up of high temperature resistant NdFeB material.In the present embodiment, springs 8 is fixed in the counterbore be located on adpting flange 10, armature 9 is fixedly connected with springs 8 by rivet 7, adpting flange 10 is formed the cavity holding springs 8, and by controlling the degree of depth in this chamber, make springs 8 can have a small tension force at initial time, armature 9 is close on adpting flange 10.Structure is more reasonable, compact.In the present embodiment, metal magnetic conducting urceolus 4 is provided with the bottom with hollow structure, and metal magnetic conducting inner core 2 is provided with from the outward extending bottom of the barrel of metal magnetic conducting inner core; Described permanent magnet 11 is patty, comprise circumferentially uniform polylith, described permanent magnet 11 is inlaid on annular insulating permanent magnet iron skeleton 3, described permanent magnet 11 clamps between the bottom of described metal magnetic conducting urceolus 4 and the bottom of described metal magnetic conducting inner core 2, and the bottom of the bottom of described metal magnetic conducting urceolus 4, described insulating permanent magnet iron skeleton 3 and described metal magnetic conducting inner core 2 is linked together by screw 1; Annulus is formed between the bottom of described metal magnetic conducting urceolus 4 and the barrel of described metal magnetic conducting inner core; Described insulated coil skeleton 3 is fixed on the bottom of described metal magnetic conducting inner core 2.Adopt said structure can reduce the consumption of permanent magnet, reduce cost of production.Reliable in order to ensure the structural stability of product, described insulating permanent magnet iron skeleton 3 is provided with the flange stretched in described annulus.Described armature 9 is fixedly connected with described springs 8 by rivet.
Working principle of the present utility model is permanent magnetism pressurization, electromagnetic releasing.The utility model stationary part produce magnetic field be formed by stacking by permanent magnetic field and electromagnetic field, when stator is in off-position, when only having permanent magnetic field, armature at permanent magnetic field effect lower stress by adsorption pressure to stator, frictional force is provided, so produce braking moment.And when stator is energized, the electromagnetic field of generation is contrary with permanent magnetic field direction, cancel each other, armature affranchises, and opens, brake off from stator emaciated face.
Frictional force, and then produce braking moment.And when stator is energized, the electromagnetic field of generation is contrary with permanent magnetic field direction, cancel each other, armature affranchises, and opens, brake off from stator emaciated face.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong to protection domain of the present utility model.

Claims (5)

1. a convergent magnetic field type permanent magnetism safety brake, comprises relative stators and rotators, and described rotor comprises armature and adpting flange, and described armature is annular, and described armature is sleeved on described adpting flange, and the two relative end face is connected by springs, described stator comprises metal magnetic conducting urceolus and metal magnetic conducting inner core, described metal magnetic conducting inner core is contained in described metal magnetic conducting urceolus, the two is connected by permanent magnet, annular space is formed between the barrel of described metal magnetic conducting inner core and the barrel of described metal magnetic conducting urceolus, coil is provided with in described annular space, described coil is fixed in insulated coil skeleton, described insulated coil skeleton is fixed in described annular space, the end face of described insulated coil skeleton is lower than the barrel end face of described metal magnetic conducting inner core, the barrel end face of described metal magnetic conducting inner core is lower than the barrel end face of described metal magnetic conducting urceolus, the barrel end face of described metal magnetic conducting urceolus forms stator rubbing surface, described stator rubbing surface is relative with described armature, it is characterized in that, the end face of described metal magnetic conducting inner core is provided with groove, the internal diameter of described groove is greater than the internal diameter of described armature, the barrel top cylindrical of described metal magnetic conducting urceolus is provided with shoulder, the internal diameter of described shoulder is greater than the external diameter of described armature.
2. convergent magnetic field type permanent magnetism safety brake according to claim 1, is characterized in that, described springs is fixed in the counterbore be located on described adpting flange.
3. convergent magnetic field type permanent magnetism safety brake according to claim 1, is characterized in that, described metal magnetic conducting urceolus is provided with the bottom of band hollow structure, and described metal magnetic conducting inner core is provided with the outward extending bottom of barrel from described metal magnetic conducting inner core; Described permanent magnet is patty, comprise circumferentially uniform polylith, described permanent magnet is inlaid on annular insulating permanent magnet iron skeleton, described permanent magnet clamps between the bottom of described metal magnetic conducting urceolus and the bottom of described metal magnetic conducting inner core, together with the bottom of described metal magnetic conducting urceolus, described insulating permanent magnet iron skeleton are connected by screw with the bottom of described metal magnetic conducting inner core; Annulus is formed between the bottom of described metal magnetic conducting urceolus and the barrel of described metal magnetic conducting inner core; Described insulated coil skeleton is fixed on the bottom of described metal magnetic conducting inner core.
4. convergent magnetic field type permanent magnetism safety brake according to claim 3, it is characterized in that, described insulating permanent magnet iron skeleton is provided with the flange stretched in described annulus.
5. convergent magnetic field type permanent magnetism safety brake according to claim 1, it is characterized in that, described armature is fixedly connected with described springs by rivet.
CN201420826558.0U 2014-12-22 2014-12-22 A kind of convergent magnetic field type permanent magnetism safety brake Active CN204419939U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111981061A (en) * 2020-08-24 2020-11-24 浙江英洛华赫兹电气有限公司 Electromagnetic power-off brake with high braking torque

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111981061A (en) * 2020-08-24 2020-11-24 浙江英洛华赫兹电气有限公司 Electromagnetic power-off brake with high braking torque

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