CN204741401U - Permanent magnetism gear - Google Patents
Permanent magnetism gear Download PDFInfo
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- CN204741401U CN204741401U CN201520465208.0U CN201520465208U CN204741401U CN 204741401 U CN204741401 U CN 204741401U CN 201520465208 U CN201520465208 U CN 201520465208U CN 204741401 U CN204741401 U CN 204741401U
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Abstract
The utility model discloses a permanent magnetism gear drive, including stator assembly, magnet adjustment ring assembly, rotor assembly and casing assembly. The utility model discloses only have the one deck permanent magnet, consequently when practicing thrift the permanent magnet, the degree of difficulty of processing and assembly is also less. The utility model discloses a built -in type hole of permanent magnet in by rotor core is fixed, and the permanent magnet can be because of the high -speed centrifugal force that produces when rotatory of rotor core throws away, therefore safe and reliable. The utility model discloses a drive ratio can change as required. The utility model discloses an output speed can establish to invariable as required. The utility model discloses a last damping strip that is equipped with the conductor material and makes of rotor core can cut the magnetic field of stator winding production and form induced current, and the produced lorentz lorentz's power of this induced current can form the damping, makes rotational speed and torque fast convergence and steady operation after the rotor starts, the utility model discloses an air current can be taken away produced heat in stator assembly, magnet adjustment ring assembly and the rotor assembly.
Description
Technical field
The utility model relates to a kind of gear drive, particularly a kind of permanent magnet gear transmission device.
Background technology
Mechanical gear transmission device is very extensive as a kind of power transmission range of application, almost throughout the every field of industrial and agricultural production and people's daily life.
The introducing of mechanical gear transmission device, solves the matching problem of Torque and speed in drive system.But the introducing of mechanical gear transmission device also brings the problems such as such as vibration, noise, lubrication, reliability and regular maintenance to drive system.
Permanent magnet gear transmission device utilizes magnetic Field Coupling transferring power, has non-contact transmission feature, avoids the problem such as such as wearing and tearing, noise, gear teeth spot corrosion, fracture that traditional mechanical gear drive produces because of material contact, reduces maintenance cost.
The same with mechanical gear transmission device, permanent magnet gear transmission device also has parallel-axis type, with one heart three kinds of forms such as shaft type and staggered shaft type.
Wherein, concentric shaft type permanent magnet gear transmission device also claims concentric type permanent magnet gear transmission device, can make full use of permanent magnet magnetic energy product, reaches the mechanical performance compared favourably with mechanical gear transmission device; without friction, nothing wearing and tearing during operation, and there is the advantages such as overload protection.
Concentric type permanent magnet gear transmission device has three layers of concentric rotor: (1) low speed rotor (permanent magnet pole logarithm is more); (2) adjustable magnetic ring (adjusting the back-up block of pole piece and magnetic permeability near vacuum to form by the ferromagnetism that magnetic permeability is very large); (3) high speed rotor (permanent magnet pole logarithm is less).
Concentric type permanent magnet gear transmission device has two-layer air gap: between (1) low speed rotor and adjustable magnetic ring; (2) between adjustable magnetic ring and high speed rotor.
Concentric type permanent magnet gear transmission device has two kinds of motion modes: (1) adjustable magnetic ring is fixed, high speed rotor and low speed rotor direction of rotation; (2) by low speed rotor or high speed rotor, one of them is fixed, and adjustable magnetic ring relatively rotates with another p-m rotor and rotation direction is identical.
The shortcoming of existing concentric type permanent magnet gear transmission device a: rotor must be fixed in (1) three layer of concentric rotor, can only have two motion rotors when namely running, therefore its gearratio is fixing; (2) when fluctuation appears in input speed (as wind power generation), also there is fluctuation in output speed, namely output speed can not be constant thereupon; (3) can only speed change, can not speed governing.
The gearratio that prior art is formed is constant, can not change, and gearratio of the present utility model can change as required, and concrete principle is see operation logic described below.
3, output speed of the present utility model can be set to constant as required
When fluctuation occurs input speed (wheel speed as during wind power generation), the output speed of prior art also fluctuates thereupon; And the utility model can change the magnetic field rotating speed (comprising numerical values recited and direction) of stator winding, to ensure that output speed is constant by Frequency Converter Control.Concrete principle is see operation logic described below.
4, the utility model is short for start-up time, rotating speed and torque ripple little
The amortisseur bar that conductor material is made rotor core of the present utility model is equipped with, can cutting stator winding produce magnetic field and form induced current, the Lorentz force that this induced current produces can form damping, makes the rotating speed after rotor startup and torque Fast Convergent and stable operation; Prior art then needs the long period to restrain and stable operation.
5, the utility model heating is little, and efficiency is high
Centrifugal fan of the present utility model subsequently projecting shaft rotates, and the centrifugal force formed can make air flow and form ventilation circuit; The path of this ventilation circuit is: air flows through the case surface ventilation hole of flange after the shell and enters the gap that rear end cap, shell and stator core, adjustable magnetic ring and rotor core formed, object be cool stator winding near the end of curved cover, tune pole piece is near the external part of curved cover part, cushion block and back-up block; Then the semicircle orifice of this air stream again in rotor core flows into the gap that in shell, front end housing and stator core, adjustable magnetic ring and rotor core are formed, then by flowing out near the ventilation hole of shell front flange the radial air gap through fan housing and shell gusset, object be cooled rotor inside unshakable in one's determination, stator winding near the end of front projecting shaft, tune pole piece is near the outer surface of front projecting shaft part, the external part of cushion block, the external part of back-up block and stator core.
The heat produced in field frame assembly, adjustable magnetic ring assembly and rotor assembly can be taken away by the air stream that therefore mechanical structure of the present utility model is formed.
Summary of the invention
For solving the problems referred to above that prior art exists, the purpose of this utility model is to provide one both can change gearratio, and when input speed also can be made to occur fluctuation, output speed is constant, and has the permanent magnet gear transmission device of stepless speed governing characteristic; Except there is the advantage of existing concentric type permanent magnet gear transmission device, also there is the advantages such as mechanical structure is simple, permanent magnet consumption is little, design and manufacture is easy.
For achieving the above object, the utility model adopts following technical scheme:
A kind of permanent magnet gear transmission device, comprises field frame assembly, adjustable magnetic ring assembly, rotor assembly and casing assembly.
Described field frame assembly comprises stator core and stator winding; The silicon steel plate stacking that described stator core is insulated by two sides forms, and stator core has shape identical and equally distributed groove; Described stator winding is inlaid in the groove of stator core, produces rotating magnetic field during stator winding indirect current.
Shell in described stator core and casing assembly adopts interference fit to fix.
Described stator core is external stator iron core or internal stator iron core; When stator core is external stator iron core, it is unshakable in one's determination inner that adjustable magnetic ring assembly and rotor assembly are positioned at external stator; When stator core is internal stator iron core, adjustable magnetic ring assembly and rotor assembly are positioned at the outside of internal stator iron core.
Described adjustable magnetic ring assembly comprises front projecting shaft, front bottom end bearing, front projecting shaft gland, adjusts pole piece, back-up block, cushion block, curved cover, curved jacket gland and posterior end bearing.
Described front projecting shaft is multidiameter, and has stair-stepping center nibs; Built-in front bottom end bearing; Oil filler point is had near the outside of front bottom end bearing; The equally distributed back-up block nibs matched with back-up block is had near excircle place; The external part of front projecting shaft has keyway, for being connected with extraneous prime mover or load.
Described front bottom end bearing is standard single sided sealing radial ball bearing, and sealing ring is positioned at the corresponding shaft shoulder location place of rear projecting shaft.
Described front projecting shaft gland has centre bore, is sleeved on the outer round surface of front projecting shaft and fits with its side; Have equally distributed screw hole near its excircle place, screw hole number and position of center line consistent with the back-up block nibs of front projecting shaft.
The silicon steel plate stacking that described tune pole piece is insulated by two sides forms or is made up of permeability magnetic material; Described cushion block and back-up block are made up of non-magnet material.
Described tune pole piece profile is I-steel shape; Described back-up block is rectangle, in the rectangle nibs that the tune pole piece being sleeved on two I-steel shapes is formed, makes tune pole piece form adjustable magnetic ring; Described cushion block is sleeved on back-up block two ends, and tune pole piece is fixed vertically.
Described curved cover is multidiameter, and its position of center line place has stair-stepping center nibs; Built-in posterior end bearing; Oil filler point is had near the outside of posterior end bearing; The equally distributed back-up block nibs matched with back-up block is had near excircle place.
Described curved jacket gland has centre bore, is sleeved on the outer round surface of curved cover and fits with its side; Have equally distributed screw hole near its excircle place, screw hole number and position of center line consistent with the back-up block nibs of curved cover.
Described posterior end bearing is standard single sided sealing radial ball bearing, and sealing ring is positioned at the corresponding shaft shoulder location place of rear projecting shaft.
Described rotor assembly comprises rear projecting shaft, permanent magnet, rotor core, amortisseur bar, centrifugal fan and front lower cover.
The silicon steel plate stacking that described rotor core is insulated by two sides forms, or is made up of permeability magnetic material; The axle center place of rotor core has endoporus, and bore area has the semicircle orifice of ventilation in the axial direction, and rotor core is sleeved on rear projecting shaft by key connecting or interference fit joint mode; Have equally distributed permanent magnet nibs near rotor core cylindrical place, be used for laying and fixed permanent magnet; Rotor core also has equally distributed amortisseur bar nibs, for placing amortisseur bar.
Described permanent magnet is watt shape or rectangle, is arranged on the permanent magnet nibs place of rotor core; When rotor magnetic circuit is radial structure, the permanent magnet polarity at the permanent magnet nibs place that rotor core is adjacent is different; When rotor magnetic circuit is tangential structure, the permanent magnet polarity at the permanent magnet nibs place that rotor core is adjacent is identical.
Described rear projecting shaft is multidiameter structure; Centrifugal fan is installed in the front end of rear projecting shaft; The middle part of rear projecting shaft is connected by key connecting or interference fit joint mode and rotor core; The two ends of rear projecting shaft are by bottom end bearing and posterior end bearings before in adjustable magnetic ring assembly; Rear projecting shaft has along the uniform screw hole of axial line, for matching with the screw hole on front lower cover near the end face of front bottom end bearing; Other end circumferential surface has keyway, for being connected with extraneous load or prime mover.
Described amortisseur bar conductor material is made, and is riveted on rotor core two ends.
Described centrifugal fan is made up of centrifugal flabellum and centrifugal flabellum base plate; Centrifugal flabellum is welded on centrifugal flabellum base plate in circumference uniform distribution mode, ventilation hole is had between the endoporus of centrifugal flabellum base plate and centrifugal flabellum, centrifugal flabellum base plate is sleeved on rear projecting shaft by key connecting mode or interference fit joint mode, and ensures that each ventilation hole that centrifugal flabellum base plate is opened is concentric with the semicircle orifice in rotor core.
Described front lower cover profile is stepped, has central blind hole vertically, is sleeved on the end of rear projecting shaft; The maximum outer round surface of front lower cover has seal groove, for sealing the lubricating oil of front bottom end bearing, makes it not leak; Around axial line, have equally distributed screw hole, its quantity and position of center line identical with the screw hole on rear projecting shaft end face, the end face for front bottom end bearing is located vertically.
Described casing assembly comprises front upper press cover, front upper end bearing, front end housing, shell, rear end cap, rear pressing cover, rear upper end bearing, shell gusset, fan housing, bedplate and terminal box.
Described shell has front flange and rear flange in the axial direction, front flange and rear flange all have equally distributed bolt hole, the top of front flange also has equally distributed screw hole, and the case surface near front flange and rear flange along the circumferential direction has equally distributed ventilation hole; A flat board is welded in the side of shell, flat board has the nibs of hollow, and ensure that the wiring of stator winding passes from nibs and connect with AC power, nibs surrounding has equally distributed screw hole.
Described front end housing, rear end cap, fan housing and terminal box there is equally distributed bolt hole, to be connected with shell by bolt and fix.
Described front end housing has centre bore vertically, for laying front upper end bearing; Have equally distributed bolt hole near its external peripheral surface place, its quantity and position of center line identical with the bolt hole of shell front flange, to be connected with shell front flange by bolt and fix; There is equally distributed screw hole between bolt hole and centre bore, to be connected with front upper press cover by screw and fix; Front end housing has oil filler point near front upper press cover place.
Described rear end cap has centre bore vertically, for laying rear upper end bearing; Have equally distributed bolt hole near its external peripheral surface place, its quantity and position of center line identical with the rear flange portion bolt hole of shell, connect by bolt with the rear flange of shell and fix; There is equally distributed screw hole between bolt hole and centre bore, to be connected with rear pressing cover by screw and fix; Rear end cap has oil filler point near rear pressing cover place.
Described fan housing has screw hole near shell front flange place, its quantity and position of center line identical with the screw hole at shell front flange top, fixing by the front flange top attachment of screw and shell.
Have screw hole bottom described terminal box, its quantity and position of center line identical with the screw hole in shell side panel, to be connected with shell side panel by screw and fix.
Described shell gusset is welded on case surface and is positioned at stator core place, plays reinforcement and heat dissipation ventilation groove; Bedplate is welded on outer casing bottom, and it has bolt hole.
Described front upper press cover has stepped centre bore vertically, is sleeved on the outer round surface of front projecting shaft and fits with the side of front end housing; The inner circumferential surface at centre bore small diameter place has seal groove, for sealing the lubricating oil of front upper end bearing, makes it not leak; Have equally distributed screw hole near excircle place, its quantity and position of center line identical with front end housing, the end face for front upper end bearing is located vertically.
Described rear pressing cover has stepped centre bore vertically, is sleeved on the outer round surface of curved cover and fits with the side of rear end cap; The inner circumferential surface at centre bore small diameter place has seal groove, for sealing the lubricating oil of rear upper end bearing, makes it not leak; Have equally distributed screw hole near excircle place, its quantity and position of center line identical with rear end cap, the end face for rear upper end bearing is located vertically.
There is one deck even air gap in radial direction in described fan housing and shell gusset, for ventilating.
There is Binding post/stud in described terminal box, stator winding and extraneous AC power are connected.
One deck even air gap is there is between described field frame assembly and adjustable magnetic ring assembly; Also one deck even air gap is there is between described adjustable magnetic ring assembly and rotor assembly.
Permanent magnet broad ways described in the utility model is divided into the fritter that some pieces of pole orientation are identical, lays and be fixed on the same permanent magnet nibs place of rotor core.
Permanent magnet described in the utility model is divided into the fritter that some pieces of pole orientation are identical along its length, lays and is fixed on the same permanent magnet nibs place of rotor core.
There is Binding post/stud in terminal box described in the utility model, stator winding is connected with frequency converter.
Stator winding described in the utility model is single-phase winding.
Stator winding described in the utility model is polyphase windings.
The utility model compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage:
1, electromagnetic structure of the present utility model is simple, and manufacturing expense is lower and operational reliability is high, is mainly reflected in following two aspects:
(1) prior art is two-layer permanent magnet, because the magnetic energy product of rare earth permanent magnet is very large, and the upper and lower two-layer gas length less (being generally less than 1mm) that two-layer permanent magnet is formed with adjustable magnetic ring respectively, therefore process and assembly difficulty larger; The utility model only has one deck permanent magnet, and therefore while saving permanent magnet, the difficulty of processing and assembling is also less.
(2) permanent magnet of prior art is outer sticky formula, and the non-magnet material such as glass fibre or Stainless Steel need be adopted to wrap, and add processing cost and manufacture difficulty, operational reliability also significantly reduces.Permanent magnet of the present utility model is fixed by the built-in nibs in rotor core, and permanent magnet can not throw away because of the centrifugal force produced during rotor core High Rotation Speed, therefore safe and reliable.
2, gearratio of the present utility model can adjust as required
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model embodiment.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 be that rotor magnetic circuit is radial structure and permanent magnet shape is watt shape time rotor core structure chart.
Fig. 4 be that rotor magnetic circuit is radial structure and permanent magnet is divided into some fritters time rotor core structure chart.
Fig. 5 be that rotor magnetic circuit is radial structure and permanent magnet shape is rectangle time rotor core structure chart.
Fig. 6 be that rotor magnetic circuit is cutting orientation structure and permanent magnet shape is rectangle time rotor core structure chart.
Fig. 7 is by the adjustable magnetic ring 3-D view adjusting pole piece, back-up block and cushion block to form.
In figure: 1, front projecting shaft; 2, front bottom end bearing; 3, front upper end bearing; 4, front upper press cover; 5, front end housing; 6, shell; 7, stator core; 8, pole piece is adjusted; 9, permanent magnet; 10, stator winding; 11, cushion block; 12, curved cover; 13, back-up block; 14, curved jacket gland; 15, rear end cap; 16, rear pressing cover; 17, rear upper end bearing; 18, posterior end bearing; 19, rear projecting shaft; 20, rotor core; 21, bedplate; 22, fan housing; 23, centrifugal flabellum base plate; 24, centrifugal flabellum; 25, front lower cover; 26, front projecting shaft gland; 27, terminal box; 28, shell gusset; 29, amortisseur bar.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in figs. 1-7, a kind of permanent magnet gear transmission device, comprises field frame assembly, adjustable magnetic ring assembly, rotor assembly and casing assembly.
Described field frame assembly comprises stator core 7 and stator winding 10; The silicon steel plate stacking that described stator core 7 is insulated by two sides forms, and stator core 7 has shape identical and equally distributed groove; Described stator winding 10 is inlaid in the groove of stator core 7, produces rotating magnetic field during stator winding 10 indirect current.
Described stator core 7 adopts interference fit to fix with the shell 6 in casing assembly.
Described stator core 7 is external stator unshakable in one's determination 7 or internal stator iron core 7; When stator core 7 is external stator iron core 7, it is inner that adjustable magnetic ring assembly and rotor assembly are positioned at external stator unshakable in one's determination 7; When stator core 7 is internal stator iron core 7, adjustable magnetic ring assembly and rotor assembly are positioned at the outside of internal stator iron core 7.
Described adjustable magnetic ring assembly comprises front projecting shaft 1, front bottom end bearing 2, front projecting shaft gland 26, adjusts pole piece 8, back-up block 13, cushion block 11, curved cover 12, curved jacket gland 14 and posterior end bearing 18.
Described front projecting shaft 1 is multidiameter, and has stair-stepping center nibs; Built-in front bottom end bearing 2; Oil filler point is had near the outside of front bottom end bearing 2; Equally distributed back-up block 13 nibs matched with back-up block 13 is had near excircle place; The external part of front projecting shaft 1 has keyway, for being connected with extraneous prime mover or load.
Described front bottom end bearing 2 is standard single sided sealing radial ball bearing, and sealing ring is positioned at the corresponding shaft shoulder location place of rear projecting shaft 19.
Described front projecting shaft gland 26 has centre bore, is sleeved on the outer round surface of front projecting shaft 1 and fits with its side; Have equally distributed screw hole near its excircle place, screw hole number and position of center line consistent with back-up block 13 nibs of front projecting shaft 1.
The silicon steel plate stacking that described tune pole piece 8 is insulated by two sides forms or is made up of permeability magnetic material; Described cushion block 11 and back-up block 13 are made up of non-magnet material.
Described tune pole piece 8 profile is I-steel shape; Described back-up block 13 is rectangle, in the rectangle nibs that the tune pole piece 8 being sleeved on two I-steel shapes is formed, makes tune pole piece 8 form adjustable magnetic ring; Described cushion block 11 is sleeved on back-up block 13 two ends, and tune pole piece 8 is fixed vertically.
Described curved cover 12 is multidiameter, and its position of center line place has stair-stepping center nibs; Built-in posterior end bearing 18; Oil filler point is had near the outside of posterior end bearing 18; Equally distributed back-up block 13 nibs matched with back-up block 13 is had near excircle place.
Described curved jacket gland 14 has centre bore, is sleeved on the outer round surface of curved cover 12 and fits with its side; Have equally distributed screw hole near its excircle place, screw hole number and position of center line consistent with back-up block 13 nibs of curved cover 12.
Described posterior end bearing 18 is standard single sided sealing radial ball bearing, and sealing ring is positioned at the corresponding shaft shoulder location place of rear projecting shaft 19.
Described rotor assembly comprises rear projecting shaft 19, permanent magnet 9, rotor core 20, amortisseur bar 29, centrifugal fan and front lower cover 25.
The silicon steel plate stacking that described rotor core 20 is insulated by two sides forms, or is made up of permeability magnetic material; The axle center place of rotor core 20 has endoporus, and bore area has the semicircle orifice of ventilation in the axial direction, and rotor core 20 is sleeved on rear projecting shaft 19 by key connecting or interference fit joint mode; Have equally distributed permanent magnet 9 nibs near rotor core 20 cylindrical place, be used for laying and fixed permanent magnet 9; Rotor core 20 also has equally distributed amortisseur bar 29 nibs, for placing amortisseur bar 29.
Described permanent magnet 9 is watt shape or rectangle, is arranged on the permanent magnet 9 nibs place of rotor core 20; When rotor magnetic circuit is radial structure, permanent magnet 9 polarity at the permanent magnet 9 nibs place that rotor core 20 is adjacent is different; When rotor magnetic circuit is tangential structure, permanent magnet 9 polarity at the permanent magnet 9 nibs place that rotor core 20 is adjacent is identical.
Described rear projecting shaft 19 is multidiameter structure; Centrifugal fan is installed in the front end of rear projecting shaft 19; The middle part of rear projecting shaft 19 is connected by key connecting or interference fit joint mode and rotor core 20; The two ends of rear projecting shaft 19 are supported by bottom end bearing 2 before in adjustable magnetic ring assembly and posterior end bearing 18; Rear projecting shaft 19 has along the uniform screw hole of axial line near the end face of front bottom end bearing 2, for matching with the screw hole on front lower cover 25; Other end circumferential surface has keyway, for being connected with extraneous load or prime mover.
Described amortisseur bar 29 is made with conductor material, and is riveted on rotor core 20 two ends.
Described centrifugal fan is made up of centrifugal flabellum 24 and centrifugal flabellum base plate 23; Centrifugal flabellum 24 is welded on centrifugal flabellum base plate 23 in circumference uniform distribution mode, ventilation hole is had between the endoporus of centrifugal flabellum base plate 23 and centrifugal flabellum 24, centrifugal flabellum base plate 23 is sleeved on rear projecting shaft 19 by key connecting mode or interference fit joint mode, and ensures that each ventilation hole that centrifugal flabellum base plate 23 is opened is concentric with the semicircle orifice in rotor core 20.
Described front lower cover 25 profile is stepped, has central blind hole vertically, is sleeved on the end of rear projecting shaft 19; The maximum outer round surface of front lower cover 25 has seal groove, for sealing the lubricating oil of front bottom end bearing 2, makes it not leak; Around axial line, have equally distributed screw hole, its quantity and position of center line identical with the screw hole on rear projecting shaft 19 end face, the end face for front bottom end bearing 2 is located vertically.
Described casing assembly comprises front upper press cover 4, front upper end bearing 3, front end housing 5, shell 6, rear end cap 15, rear pressing cover 16, rear upper end bearing 17, shell gusset 28, fan housing 22, bedplate 21 and terminal box 27.
Described shell 6 has front flange and rear flange in the axial direction, front flange and rear flange all have equally distributed bolt hole, the top of front flange also has equally distributed screw hole, along the circumferential direction has equally distributed ventilation hole near shell 6 surface of front flange and rear flange; A flat board is welded in the side of shell 6, flat board has the nibs of hollow, and ensure that the wiring of stator winding 10 passes from nibs and connect with AC power, nibs surrounding has equally distributed screw hole.
Described front end housing 5, rear end cap 15, fan housing 22 and terminal box 27 there is equally distributed bolt hole, to be connected with shell 6 by bolt and fix.
Described front end housing 5 has centre bore vertically, for laying front upper end bearing 3; Have equally distributed bolt hole near its external peripheral surface place, its quantity and position of center line identical with the bolt hole of shell 6 front flange, connect by bolt with shell 6 front flange and fix; There is equally distributed screw hole between bolt hole and centre bore, connect by screw with front upper press cover 4 and fix; Front end housing 5 has oil filler point near front upper press cover 4 place.
Described rear end cap 15 has centre bore vertically, for laying rear upper end bearing 17; Have equally distributed bolt hole near its external peripheral surface place, its quantity and position of center line identical with the rear flange portion bolt hole of shell 6, connect by bolt with the rear flange of shell 6 and fix; There is equally distributed screw hole between bolt hole and centre bore, to be connected with rear pressing cover 16 by screw and fix; Rear end cap 15 has oil filler point near rear pressing cover 16 place.
Described fan housing 22 has screw hole near shell 6 front flange place, its quantity and position of center line identical with the screw hole at shell 6 front flange top, fixing by the front flange top attachment of screw and shell 6.
Have screw hole bottom described terminal box 27, its quantity and position of center line identical with the screw hole in shell 6 side panel, connect by screw with shell 6 side panel and fix.
Described shell gusset 28 is welded on shell 6 surface and is positioned at stator core 7 place, plays reinforcement and heat dissipation ventilation groove; Bedplate 21 is welded on bottom shell 6, and it has bolt hole.
Described front upper press cover 4 has stepped centre bore vertically, is sleeved on the outer round surface of front projecting shaft 1 and fits with the side of front end housing 5; The inner circumferential surface at centre bore small diameter place has seal groove, for sealing the lubricating oil of front upper end bearing 3, makes it not leak; Have equally distributed screw hole near excircle place, its quantity and position of center line identical with front end housing 5, the end face for front upper end bearing 3 is located vertically.
Described rear pressing cover 16 has stepped centre bore vertically, is sleeved on the outer round surface of curved cover 12 and fits with the side of rear end cap 15; The inner circumferential surface at centre bore small diameter place has seal groove, for sealing the lubricating oil of rear upper end bearing 17, makes it not leak; Have equally distributed screw hole near excircle place, its quantity and position of center line identical with rear end cap 15, the end face for rear upper end bearing 17 is located vertically.
There is one deck even air gap with shell gusset 28 in radial direction in described fan housing 22, for ventilating.
There is Binding post/stud in described terminal box 27, stator winding 10 and extraneous AC power are connected.
One deck even air gap is there is between described field frame assembly and adjustable magnetic ring assembly; Also one deck even air gap is there is between described adjustable magnetic ring assembly and rotor assembly.
Permanent magnet 9 broad ways described in the utility model is divided into the fritter that some pieces of pole orientation are identical, lays and be fixed on the same permanent magnet 9 nibs place of rotor core 20.
Permanent magnet 9 described in the utility model is divided into the fritter that some pieces of pole orientation are identical along its length, lays and is fixed on the same permanent magnet 9 nibs place of rotor core 20.
There is Binding post/stud in terminal box 27 described in the utility model, stator winding 10 is connected with frequency converter.
Stator winding 10 described in the utility model is single-phase winding.
Stator winding 10 described in the utility model is polyphase windings.
Operation logic of the present utility model is as follows:
1, magnetic Field Coupling principle of the present utility model
A p-m rotor stator winding 10 in concentric type permanent magnet gear transmission device replaces by the utility model, forms a kind of brand-new concentric type permanent magnet gear transmission device.
Produce rotating magnetic field during the utility model stator winding 10 indirect current, and form magnetic pole logarithm; Because adjustable magnetic ring assembly adjusts the back-up block 13 of pole piece 8 and magnetic permeability near vacuum to form by the ferromagnetism that magnetic permeability is very large, therefore there is adjustable magnetic effect, the air-gap field produced by permanent magnet 9 in the air-gap field produced by the stator winding 10 in field frame assembly in the utility model and rotor assembly mutually can be mated and is coupled: be i.e. the rotating magnetic field of stator winding 10 generation, the fundamental wave magnetic field that the harmonic field formed after adjustable magnetic ring can be formed with permanent magnet in rotor assembly 9 matches, and forms certain gearratio.
2, gearratio change principle of the present utility model
When low speed rotor is fixed, the computing formula of the gearratio i of prior art is
In formula (1), ω
hfor high speed rotor rotating speed; ω
sfor adjustable magnetic ring rotating speed; p
hfor high speed rotor magnetic pole logarithm; p
sfor tune pole piece 8 number of adjustable magnetic ring.
From formula (1): due to p
h, p
sbe constant, therefore the gearratio i of prior art can not change.
When high speed rotor or adjustable magnetic ring are fixed, the computational methods cotype (1) of the gearratio i of prior art, its gearratio also all can not change equally.
In the utility model, if establish adjustable magnetic ring to input, high speed rotor exports, and low speed rotor is stator core 7, then the computing formula of the utility model gearratio i
In formula (2), ω
hfor high speed rotor rotating speed; ω
sfor adjustable magnetic ring rotating speed; ω
lfor the magnetic field rotating speed of stator winding 10; p
hfor high speed rotor magnetic pole logarithm; p
sfor tune pole piece 8 number of adjustable magnetic ring; p
lfor the field pole logarithm of stator winding 10.
From formula (2), work as ω
lwith ω
sdirection of rotation contrary time, gearratio i can be increased; Work as ω
lwith ω
sdirection of rotation identical time, gearratio i can be reduced.
In the utility model, ω
lset direction very simple: only need to change the sense of current of stator winding 10, direction of rotation and the ω in magnetic field can be changed
ldirection.
In addition, in the utility model, ω
ldirection of rotation and numerical values recited also can be adjusted by frequency converter and control.
Therefore the utility model can change the size of gearratio as required.
Adjustable magnetic ring inputs, and low speed rotor exports, and the computational methods cotype (2) of gearratio i when high speed rotor is stator core 7, its gearratio i also all can change equally.
3, the utility model principle that output speed can be made constant
If the ω in the formula of establishing (2)
hfor output speed, ω
sfor input speed, then
From formula (3): as input speed ω
swhen changing or fluctuate, can by controlling and changing the magnetic field rotating speed omega of stator winding 10
l, make output speed ω
hkeep constant.
Therefore the utility model can make output speed constant.
Assembly method of the present utility model is as follows: adopt interference fit to connect with shell 6 stator core 7; Stator winding 10 is inlaid in the respective grooves of stator core 7; Back-up block 13 penetrates by two pieces of nibs adjusting pole piece 8 to form vertically, then the axial two ends of cushion block 11 along back-up block 13 are penetrated respectively, to fix adjusting the two ends of pole piece 8 vertically, tune pole piece 8 is located and is formed adjustable magnetic ring by back-up block 13 and cushion block 11 between two, then the two ends of back-up block 13 are inserted respectively in the back-up block nibs of front projecting shaft 1 and curved cover 12, fixed by the screw hole screw attachment on front projecting shaft gland 26 and curved jacket gland 14; Together with rotor core 20 to connect firmly with rear projecting shaft 19 by key connecting or interference fit; Centrifugal flabellum 24 circumferentially uniform welding, on centrifugal flabellum base plate 23, forms centrifugal fan; Centrifugal fan is sleeved on the end of rear projecting shaft 19 near front projecting shaft 1 by interference fit, and fits with the end face of rotor core 20; Permanent magnet 9 puts into the permanent magnet nibs of rotor core 20; Amortisseur bar 29 puts into the amortisseur bar nibs of rotor core 20; Shell gusset 28 is circumferentially welded on the outer surface of shell 6; Bedplate 21 is welded on the bottom of shell 6; Front end housing 5 and rear end cap 15 are fixed by Bolt Connection and shell 6; Front projecting shaft 1 is supported with front upper end bearing 3 by front bottom end bearing 2; Curved cover 12 is supported by posterior end bearing 18 and rear upper end bearing 17; The two ends of rear projecting shaft 19 are supported with posterior end bearing 18 by front bottom end bearing 2 respectively; Front bottom end bearing 2 and posterior end bearing 18 are arranged on front projecting shaft 1 respectively with the center nibs of curved cover 12; Front upper end bearing 3 is arranged in the centre bore of front end housing 5 and rear end cap 15 with rear upper end bearing 17 respectively, and front upper end bearing 3 is located by front upper press cover 4, rear pressing cover 16, front projecting shaft 1 and curved cover 12 respectively with the axial direction of rear upper end bearing 17; Front bottom end bearing 2 is located by front lower cover 25, rear projecting shaft 19, front projecting shaft 1 and curved cover 12 respectively with the axial direction of posterior end bearing 18; Fan housing 22 adopts together with screw attachment connects firmly with shell 6 respectively; Terminal box 27 is connected with the side panel of shell 6 by the screw hole of bottom; Stator winding 10 is connected with extraneous AC power or frequency converter by the Binding post/stud in terminal box 27.
Claims (6)
1. a permanent magnet gear transmission device, is characterized in that: comprise field frame assembly, adjustable magnetic ring assembly, rotor assembly and casing assembly;
Described field frame assembly comprises stator core (7) and stator winding (10); The silicon steel plate stacking that described stator core (7) is insulated by two sides forms, and stator core (7) has shape identical and equally distributed groove; Described stator winding (10) is inlaid in the groove of stator core (7), produces rotating magnetic field during stator winding (10) indirect current;
Described stator core (7) adopts interference fit to fix with the shell (6) in casing assembly;
Described stator core (7) is external stator iron core (7) or internal stator iron core (7); When stator core (7) is for external stator iron core (7), it is inner that adjustable magnetic ring assembly and rotor assembly are positioned at external stator iron core (7); When stator core (7) is for internal stator iron core (7), adjustable magnetic ring assembly and rotor assembly are positioned at the outside of internal stator iron core (7);
Described adjustable magnetic ring assembly comprises front projecting shaft (1), front bottom end bearing (2), front projecting shaft gland (26), adjusts pole piece (8), back-up block (13), cushion block (11), curved cover (12), curved jacket gland (14) and posterior end bearing (18);
Described front projecting shaft (1) is multidiameter, and has stair-stepping center nibs; Built-in front bottom end bearing (2); Oil filler point is had near the outside of front bottom end bearing (2); Equally distributed back-up block (13) nibs matched with back-up block (13) is had near excircle place; The external part of front projecting shaft (1) has keyway, for being connected with extraneous prime mover or load;
Described front bottom end bearing (2) is standard single sided sealing radial ball bearing, and sealing ring is positioned at the corresponding shaft shoulder location place of rear projecting shaft (19);
Described front projecting shaft gland (26) has centre bore, is sleeved on the outer round surface of front projecting shaft (1) and fits with its side; Have equally distributed screw hole near its excircle place, screw hole number and position of center line consistent with back-up block (13) nibs of front projecting shaft (1);
The silicon steel plate stacking that described tune pole piece (8) is insulated by two sides forms or is made up of permeability magnetic material; Described cushion block (11) and back-up block (13) are made up of non-magnet material;
Described tune pole piece (8) profile is I-steel shape; Described back-up block (13) is rectangle, in the rectangle nibs that the tune pole piece (8) being sleeved on two I-steel shapes is formed, makes tune pole piece (8) form adjustable magnetic ring; Described cushion block (11) is sleeved on back-up block (13) two ends, and tune pole piece (8) is fixed vertically;
Described curved cover (12) is multidiameter, and its position of center line place has stair-stepping center nibs; Built-in posterior end bearing (18); Oil filler point is had near the outside of posterior end bearing (18); Equally distributed back-up block (13) nibs matched with back-up block (13) is had near excircle place;
Described curved jacket gland (14) has centre bore, is sleeved on the outer round surface of curved cover (12) and fits with its side; Have equally distributed screw hole near its excircle place, screw hole number and position of center line consistent with back-up block (13) nibs of curved cover (12);
Described posterior end bearing (18) is standard single sided sealing radial ball bearing, and sealing ring is positioned at the corresponding shaft shoulder location place of rear projecting shaft (19);
Described rotor assembly comprises rear projecting shaft (19), permanent magnet (9), rotor core (20), amortisseur bar (29), centrifugal fan and front lower cover (25);
The silicon steel plate stacking that described rotor core (20) is insulated by two sides forms, or is made up of permeability magnetic material; The axle center place of rotor core (20) has endoporus, and bore area has the semicircle orifice of ventilation in the axial direction, and rotor core (20) is sleeved on rear projecting shaft (19) by key connecting or interference fit joint mode; Have equally distributed permanent magnet (9) nibs near rotor core (20) cylindrical place, be used for laying and fixed permanent magnet (9); Rotor core (20) also has equally distributed amortisseur bar (29) nibs, for placing amortisseur bar (29);
Described permanent magnet (9) is watt shape or rectangle, is arranged on permanent magnet (9) the nibs place of rotor core (20); When rotor magnetic circuit is radial structure, permanent magnet (9) polarity at permanent magnet (9) the nibs place that rotor core (20) is adjacent is different; When rotor magnetic circuit is tangential structure, permanent magnet (9) polarity at permanent magnet (9) the nibs place that rotor core (20) is adjacent is identical;
Described rear projecting shaft (19) is multidiameter structure; Centrifugal fan is installed in the front end of rear projecting shaft (19); The middle part of rear projecting shaft (19) is passed through key connecting or interference fit joint mode and rotor core (20) and is connected; The two ends of rear projecting shaft (19) are supported by bottom end bearing (2) before in adjustable magnetic ring assembly and posterior end bearing (18); Rear projecting shaft (19) has along the uniform screw hole of axial line, for matching with the screw hole on front lower cover (25) near the end face of front bottom end bearing (2); Other end circumferential surface has keyway, for being connected with extraneous load or prime mover;
Described amortisseur bar (29) is made with conductor material, and is riveted on rotor core (20) two ends;
Described centrifugal fan is made up of centrifugal flabellum (24) and centrifugal flabellum base plate (23); Centrifugal flabellum (24) is welded on centrifugal flabellum base plate (23) in circumference uniform distribution mode, ventilation hole is had between the endoporus of centrifugal flabellum base plate (23) and centrifugal flabellum (24), centrifugal flabellum base plate (23) is sleeved on rear projecting shaft (19) by key connecting mode or interference fit joint mode, and ensures that each ventilation hole that centrifugal flabellum base plate (23) is opened is concentric with the semicircle orifice in rotor core (20);
Described front lower cover (25) profile is stepped, has central blind hole vertically, is sleeved on the end of rear projecting shaft (19); The maximum outer round surface of front lower cover (25) has seal groove, for sealing the lubricating oil of front bottom end bearing (2), makes it not leak; Around axial line, have equally distributed screw hole, its quantity and position of center line identical with the screw hole on rear projecting shaft (19) end face, the end face for front bottom end bearing (2) is located vertically;
Described casing assembly comprises front upper press cover (4), front upper end bearing (3), front end housing (5), shell (6), rear end cap (15), rear pressing cover (16), rear upper end bearing (17), shell gusset (28), fan housing (22), bedplate (21) and terminal box (27);
Described shell (6) has front flange and rear flange in the axial direction, front flange and rear flange all have equally distributed bolt hole, the top of front flange also has equally distributed screw hole, along the circumferential direction has equally distributed ventilation hole near shell (6) surface of front flange and rear flange; A flat board is welded in the side of shell (6), flat board has the nibs of hollow, and ensure that the wiring of stator winding (10) passes from nibs and connect with AC power, nibs surrounding has equally distributed screw hole;
Described front end housing (5), rear end cap (15), fan housing (22) and terminal box (27) there is equally distributed bolt hole, connects by bolt with shell (6) and fix;
Described front end housing (5) has centre bore vertically, for laying front upper end bearing (3); Have equally distributed bolt hole near its external peripheral surface place, its quantity and position of center line identical with the bolt hole of shell (6) front flange, connect by bolt with shell (6) front flange and fix; There is equally distributed screw hole between bolt hole and centre bore, connect by screw with front upper press cover (4) and fix; Front end housing (5) has oil filler point near front upper press cover (4) place;
Described rear end cap (15) has centre bore vertically, for laying rear upper end bearing (17); Have equally distributed bolt hole near its external peripheral surface place, its quantity and position of center line identical with the rear flange portion bolt hole of shell (6), connect by the rear flange of bolt with shell (6) and fix; There is equally distributed screw hole between bolt hole and centre bore, connect by screw with rear pressing cover (16) and fix; Rear end cap (15) has oil filler point near rear pressing cover (16) place;
Described fan housing (22) has screw hole near shell (6) front flange place, its quantity and position of center line identical with the screw hole at shell (6) front flange top, fixing by the front flange top attachment of screw and shell (6);
Described terminal box (27) bottom has screw hole, its quantity and position of center line identical with the screw hole in shell (6) side panel, connect by screw with shell (6) side panel and fix;
Described shell gusset (28) is welded on shell (6) surface and is positioned at stator core (7) place, plays reinforcement and heat dissipation ventilation groove; Bedplate (21) is welded on shell (6) bottom, and it has bolt hole;
Described front upper press cover (4) has stepped centre bore vertically, is sleeved on the outer round surface of front projecting shaft (1) and fits with the side of front end housing (5); The inner circumferential surface at centre bore small diameter place has seal groove, for sealing the lubricating oil of front upper end bearing (3), makes it not leak; Have equally distributed screw hole near excircle place, its quantity and position of center line identical with front end housing (5), the end face for front upper end bearing (3) is located vertically;
Described rear pressing cover (16) has stepped centre bore vertically, is sleeved on the outer round surface of curved cover (12) and fits with the side of rear end cap (15); The inner circumferential surface at centre bore small diameter place has seal groove, for sealing the lubricating oil of rear upper end bearing (17), makes it not leak; Have equally distributed screw hole near excircle place, its quantity and position of center line identical with rear end cap (15), the end face for rear upper end bearing (17) is located vertically;
There is one deck even air gap in radial direction in described fan housing (22) and shell gusset (28), for ventilating;
There is Binding post/stud in described terminal box (27), stator winding (10) and extraneous AC power are connected;
One deck even air gap is there is between described field frame assembly and adjustable magnetic ring assembly; Also one deck even air gap is there is between described adjustable magnetic ring assembly and rotor assembly.
2. a kind of permanent magnet gear transmission device according to claim 1, it is characterized in that: described permanent magnet (9) broad ways is divided into the fritter that some pieces of pole orientation are identical, lay and be fixed on same permanent magnet (9) the nibs place of rotor core (20).
3. a kind of permanent magnet gear transmission device according to claim 1, it is characterized in that: described permanent magnet (9) is divided into the fritter that some pieces of pole orientation are identical along its length, lay and be fixed on same permanent magnet (9) the nibs place of rotor core (20).
4. a kind of permanent magnet gear transmission device according to claim 1, is characterized in that: have Binding post/stud in described terminal box (27), connected by stator winding (10) with frequency converter.
5. a kind of permanent magnet gear transmission device according to claim 1, is characterized in that: described stator winding (10) is single-phase winding.
6. a kind of permanent magnet gear transmission device according to claim 1, is characterized in that: described stator winding (10) is polyphase windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465208.0U CN204741401U (en) | 2015-07-01 | 2015-07-01 | Permanent magnetism gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465208.0U CN204741401U (en) | 2015-07-01 | 2015-07-01 | Permanent magnetism gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204741401U true CN204741401U (en) | 2015-11-04 |
Family
ID=54423118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520465208.0U Withdrawn - After Issue CN204741401U (en) | 2015-07-01 | 2015-07-01 | Permanent magnetism gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204741401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059223A (en) * | 2016-05-25 | 2016-10-26 | 东南大学 | Complementary type magnetic gear double-rotor motor |
| CN106452008A (en) * | 2016-12-01 | 2017-02-22 | 大连交通大学 | Concentric permanent magnet gear driving device based on squirrel cage rotor |
-
2015
- 2015-07-01 CN CN201520465208.0U patent/CN204741401U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059223A (en) * | 2016-05-25 | 2016-10-26 | 东南大学 | Complementary type magnetic gear double-rotor motor |
| CN106059223B (en) * | 2016-05-25 | 2018-06-15 | 东南大学 | A kind of complementary type magnetic gear double-rotor machine |
| CN106452008A (en) * | 2016-12-01 | 2017-02-22 | 大连交通大学 | Concentric permanent magnet gear driving device based on squirrel cage rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151104 Effective date of abandoning: 20180213 |