CN105720749A - Rotating motor - Google Patents
Rotating motor Download PDFInfo
- Publication number
- CN105720749A CN105720749A CN201510951804.4A CN201510951804A CN105720749A CN 105720749 A CN105720749 A CN 105720749A CN 201510951804 A CN201510951804 A CN 201510951804A CN 105720749 A CN105720749 A CN 105720749A
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- brush
- support bracket
- stator
- frame support
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
- H02K5/145—Fixedly supported brushes or brush holders, e.g. leaf or leaf-mounted brushes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention improves the operation of the replacement operation of a ground brush in a rotary motor. The rotating motor (100) includes: a stator (20) with a stator core (21) and a stator coil (22); and a ground device (38, 40) for preventing static electricity accumulation on a rotor (10). The ground device (38, 40) includes one ground brush fixed on a rotating shaft (11) in a compressing state; a support tray which supports the ground brush on the rotating shaft (11) in the compressing state; a brush pressing member supported on the support tray in a rotable mode, and pressing the ground brush on the rotating shaft (11); and a driving support part (44) which makes the support tray move between a set position and radial direction outside.
Description
Technical field
The present invention relates to the electric rotating machine with earthing brush.
Background technology
On the armature spindle of electric rotating machine, can produce to be referred to as the voltage of shaft voltage between axial end or bearing.Producing cause as shaft voltage, it is possible to enumerate the accumulation of the electromagnetic induction effect, electrostatic induction effect and the electrostatic charge that produce because of magnetomotive force, the imbalance of magnetic circuit.
Even if although when being driven with sine-wave power, also a little shaft voltage can be produced because of the electric capacity of above-mentioned effect and electric rotating machine, but when carrying out Driven by inverter, compared with driving with sine-wave power, there is the impact being subject to high fdrequency component and the tendency increased.
In electric rotating machine, shaft voltage is higher, thus because flowing through electric current by oil film or the lubrication electric discharge of adipose membrane or energising, there is countershaft, bearing and cause the impacts such as damage.
Therefore, in the electric rotating machine being susceptible to the higher situation of shaft voltage, near any one in two bearings, it is provided with grounding device.Grounding device has: earthing brush, this earthing brush is carried out static supporting so that it is contact with rotating shaft；And maintenance part, this maintenance part is carried out static supporting, makes earthing brush be crimped on rotating shaft (patent documentation 1).Maintaining part code insurance is held in bracket, implements following countermeasure: make electric current be down to bearing bracket (ground connection) so that not have electric current to flow through on bearing.
Prior art literature
Patent documentation
Patent documentation 1: Japan Patent is real opens clear 63-97358 publication
Summary of the invention
Invent problem to be solved
Earthing brush maintains the state of the rotating shaft being crimped on rotation, therefore, it may occur that abrasion.Therefore, when reaching the wear extent of regulation, it is necessary to be replaced.
When having the electric rotating machine of external fan, it is disposed proximate to the grounding device near the bearing of external fan side and is arranged in the space between framework and external fan cover plate.Therefore, being formed with taking-up inserting opening on fan cover plate outside, this taking-up inserting opening is used for entering grounding device and being taken out by earthing brush and insert.
Therefore, when changing earthing brush, take out earthing brush via this taking-up inserting opening, it addition, insert the earthing brush changed.It addition, the taking-up of earthing brush, installation operation are undertaken by hands stretches into taking-up inserting opening.Therefore, operability likely can be deteriorated, and according to circumstances likely can injure hands, thus there is the problem needing to improve operability.
Therefore, it is an object of the invention to improve the operability of the replacement operation of earthing brush in electric rotating machine.
Technical teaching for solving the problem was
In order to achieve the above object, electric rotating machine involved in the present invention is characterised by, including: rotor, this rotor has rotating shaft and rotor core, described rotating shaft is rotatably supported by axle, axially extends at place of rotating shaft center, and described rotor core is arranged at the outside of described rotating shaft；Stator, this stator has stator core and stator coil, and described stator core is configured at the radial outside of described rotating shaft, and described stator coil is arranged in described stator core in the groove formed；And grounding device, this grounding device is used for preventing electrostatic from accumulating to described rotor, and described grounding device includes: earthing brush, and this earthing brush is fixed on described rotating shaft so that crimped status is static；Frame support bracket, described earthing brush is supported on described rotating shaft so that crimped status is static by this frame support bracket；Brush pressing piece, this brush pressing piece is pivotally supported on described frame support bracket, and described earthing brush is pressed so that described earthing brush is crimped on described rotating shaft；And driving support, this driving support is formed to make described frame support bracket to move between position and described radial outside arranging.
Invention effect
According to the present invention, the operability of the replacement operation of earthing brush can be improved in electric rotating machine.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of the electric rotating machine involved by embodiment.
Fig. 2 indicates that the partial lengthwise sectional view of the grounding device part that the II-II alignment of Fig. 1 looks.
Fig. 3 indicates that the partial lateral sectional view of the grounding device part that the III-III alignment of Fig. 2 looks.
Fig. 4 is an illustration for the structure driving support of the grounding device of the electric rotating machine involved by embodiment and the concept map of action.
Detailed description of the invention
Hereinafter, with reference to accompanying drawing, the cage induction motor involved by embodiments of the present invention is illustrated.
Fig. 1 is the longitudinal sectional view of the electric rotating machine involved by embodiment.Electric rotating machine 100 possesses rotor 10, stator 20, framework 31, external fan side bearing 32, ball bearing (coupling side) 33, external fan 35, external fan cover plate 37.
Rotor 10 possesses rotating shaft 11, rotor core 12, rotor shaft 13 and short-circuited conducting sleeve 14.Rotating shaft 11, can be supported by axle in the way of rotating around the spindle, extends along major axes orientation.Rotor core 12 be centrally formed the central opening running through rotating shaft 11, for instance the drum formed in the silicon steel steel plate of ferromagnetic is carried out stacking along major axes orientation.It addition, in rotor core 12, near the radial outside of central opening and the radial outside of rotor core 12, circumferentially separated from each other alternately form not shown through hole.
Rotor shaft 13 is electric conductor, is respectively arranged in each through hole.Short-circuited conducting sleeve 14 is the electric conductor of ring-type prominent from the axial two ends of rotor core 12, that rotor shaft 13 be electrically connected to each other.
Stator 20 has stator core 21 and stator coil 22.Stator core 21 is mainly made up of ferromagnetic material, is located at the radial outside of rotor core 12, separates gap with rotor core 12 and relative.Stator coil 22 has the connecting portion outside the conductor being accommodated in not shown groove and stator core 21, and described groove is formed at stator core 21 and extends along major axes orientation.
Rotor core 12 and stator 20 are received by framework 31.External fan side bearing 32 and the both sides as the ball bearing (coupling side) 33 rotatably major axes orientation of countershaft 11 of the shaft coupling 11a side of the joint portion combined with not shown rotating mechanism carry out axle supporting.External fan side bearing 32 and ball bearing (coupling side) 33 are static fixing by framework 31 respectively.
The axially external of the part supported by external fan side bearing 32 of rotating shaft 11 is provided with external fan 35.It addition, a part for framework 31 and external fan 35 are covered by external fan cover plate 37.In a part for the external fan cover plate 37 of the suction side of external fan 35, it is formed with the suction inlet 37b of cooling atmosphere gas.It addition, external fan cover plate 37 is provided with the process opening 37a of the earthing brush for processing frame support bracket described later 43 (Fig. 2,3), except processing time, it is stamped lid.
Shaft coupling side grounding device 38 it is provided with between ball bearing (coupling side) 33 and shaft coupling portion 11a.It addition, be provided with external fan side grounding device 40 between external fan 35 and external fan side bearing 32.External fan side grounding device 40 has driving support 44.Illustrate to drive support 44 below with Fig. 2.
Fig. 2 indicates that the partial lengthwise sectional view of the grounding device part that the II-II alignment of Fig. 1 looks.It addition, Fig. 3 indicates that the partial lateral sectional view of the grounding device part that the III-III alignment of Fig. 2 looks.External fan side grounding device 40 possesses earthing brush 41, brush pressing piece 42, frame support bracket 43 and drives support 44.
It is static fixing that earthing brush 41 is supported by bracket 43 institute.One face of earthing brush 41 is fixedly attached to the brush pressing piece 42 of frame support bracket 43 and is crimped on the surface of rotating shaft 11.Under the rotation status of rotating shaft 11, the sliding mode between face and rotating shaft 11 surface of this earthing brush 41 is maintained.
Driving support 44 to possess mobile support 45 and drive division 46, described drive division 46 moves driving to by the mobile fixed supported frame support bracket 43 of support 45.Mobile support 45 extends from rotating shaft 11 near surface to radial outside, arrives near the process opening 37a of external fan cover plate 37 (Fig. 1).Mobile support 45 is built-in with the rotating shaft 45a rotated around the axle axially extended.Rotating shaft 45a is formed with screw thread, drive division 46 rotate driving.
Fig. 4 is an illustration for the concept map of structure and the action driving support 44.Mobile support 45 possesses rotating shaft 45a, bearing 45b, slows down with the second gear 45c and move axially conducting part 45d.The frame support bracket 43 making to maintain earthing brush 41 in order to change earthing brush 41 moves to radial outside, and this direction moved is called brush moving direction.
Rotating shaft 45a extends along brush moving direction, and its two ends are rotatably supported by bearing 45b institute axle so that described rotating shaft 45a does not move along brush moving direction.Rotating shaft 45a is configured to can rotate in positive and negative both direction.Rotating shaft 45a is formed with external screw thread in two parts sandwiched for bearing 45b.Deceleration is arranged at the outside of the bearing of the side of rotating shaft 45a with the second gear 45c.
Move axially and conducting part 45d is formed for the rotating shaft 45a through hole run through.The part relative with rotating shaft of through hole is formed the female thread corresponding with the external screw thread being formed at rotating shaft 45a.Move axially conducting part 45d to combine with frame support bracket 43.Not shown guide portion is utilized to be configured to frame support bracket 43 be only capable of moving along brush moving direction.Therefore, by the rotation of rotating shaft 45a, move axially conducting part 45d and frame support bracket 43 combined with it will not move along brush moving direction in the way of rotating in the plane being perpendicular to brush moving direction.
Drive division 46 possesses driving motor 46a and slows down with the first gear 46b.Drive motor 46a can rotate in positive and negative both direction, make deceleration rotate with the first gear 46b.Slow down and with the first gear 46b, rotation conduction is extremely slowed down with the second gear 45c, make rotating shaft 45a rotate.Additionally, though it is shown that make driving motor 46a situation about reversing for making the direction of rotation of rotating shaft 45a reverse, but it is not limited thereto.Such as, when the direction of rotation making rotating shaft 45a reverses, it is also possible to replace to slow down with the first gear 46b and deceleration with the second gear 45c between via the system of not shown gear.
In addition, in the present embodiment, illustrate the situation using the mode being formed with externally threaded rotating shaft etc. for moving between making the frame support bracket 43 of maintenance earthing brush 41 near the installation site and external fan cover plate 37 inner surface of rotating shaft 11 near surface, but be not limited thereto.For example, it is also possible to be comprise use the mode etc. of crawler belt, moveable mode.
Above embodiments of the present invention are illustrated, but this embodiment exemplarily proposes, be not intended to the scope of the present invention is defined.It addition, embodiment can be implemented with other various forms, without departing from, in the scope of the inventive concept, various omission, replacement, change being carried out.Embodiment and deformation thereof are all contained in the scope of the present invention, inventive concept, similarly, are also contained in the invention described in present patent application claim and in the scope that is equal to it.
Label declaration
10 rotors
11 rotating shafts
11a shaft coupling portion
12 rotor cores
13 rotor shaft
14 short-circuited conducting sleeves
15 internal fans
20 stators
21 stator cores
22 stator coils
31 frameworks
32 external fan side bearings
33 ball bearing (coupling side)s
35 external fans
37 external fan cover plates
37a processes opening
37b suction inlet
38 shaft coupling side grounding device
40 external fan side grounding device
41 earthing brushes
42 brush pressing pieces
43 frame support brackets
44 drive support
45 move support
45a rotating shaft
45b bearing
45c slows down and uses the second gear
45d moves axially conducting part
46 drive divisions
46a drives motor
46b slows down and uses the first gear
100 electric rotating machines
Claims (3)
1. an electric rotating machine, it is characterised in that including:
Rotor, this rotor has rotating shaft and rotor core, and described rotating shaft is rotatably supported by axle, axially extends at place of rotating shaft center, and described rotor core is arranged at the outside of described rotating shaft；
Stator, this stator has stator core and stator coil, and described stator core is configured at the radial outside of described rotating shaft, and described stator coil is arranged in described stator core in the groove formed；And
Grounding device, this grounding device is used for preventing electrostatic from accumulating to described rotor,
Described grounding device includes:
Earthing brush, this earthing brush is fixed on described rotating shaft so that crimped status is static；
Frame support bracket, described earthing brush is supported on described rotating shaft so that crimped status is static by this frame support bracket；
Brush pressing piece, this brush pressing piece is pivotally supported on described frame support bracket, and described earthing brush is pressed so that described earthing brush is crimped on described rotating shaft；And
Driving support, this driving support is formed to make described frame support bracket to move between position and described radial outside arranging.
2. electric rotating machine as claimed in claim 1, it is characterised in that
Described driving support includes:
Mobile support, this moves support and in a movable manner described frame support bracket is supported, and extends to radial outside；And
Drive division, described frame support bracket is moved driving along described mobile support by this drive division.
3. electric rotating machine as claimed in claim 2, it is characterised in that
Described mobile support utilizes the built-in rotating shaft axially extended, and along its length described frame support bracket is retrained in a movable manner,
Described rotating shaft is rotated driving by described drive division.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014255331A JP6121980B2 (en) | 2014-12-17 | 2014-12-17 | Rotating electric machine |
| JP2014-255331 | 2014-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105720749A true CN105720749A (en) | 2016-06-29 |
| CN105720749B CN105720749B (en) | 2020-02-21 |
Family
ID=56142626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510951804.4A Active CN105720749B (en) | 2014-12-17 | 2015-12-16 | Rotating electrical machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6121980B2 (en) |
| CN (1) | CN105720749B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006119A (en) * | 2018-10-05 | 2020-04-14 | 东芝三菱电机产业系统株式会社 | Rotating electric machine, oil drain box and air supply system |
| CN111788419A (en) * | 2018-03-23 | 2020-10-16 | 伊格尔工业股份有限公司 | Mechanical seal |
| CN111837319A (en) * | 2018-03-12 | 2020-10-27 | 东芝三菱电机产业系统株式会社 | Rotating electric machine and bearing bracket |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7533276B2 (en) | 2021-02-25 | 2024-08-14 | ニデック株式会社 | Motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6397358U (en) * | 1986-12-11 | 1988-06-23 | ||
| KR100201700B1 (en) * | 1994-11-30 | 1999-06-15 | 오상수 | Automatic controlling device for a brush |
| CN1317077A (en) * | 1998-09-09 | 2001-10-10 | Smc株式会社 | Motor-driven actuator |
| JP2002325397A (en) * | 2001-04-26 | 2002-11-08 | Toshiba Corp | Current collector of dynamo-electric machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5859360U (en) * | 1981-10-16 | 1983-04-21 | 守谷電工株式会社 | Generator slip ring automatic cleaning device |
| JP3480802B2 (en) * | 1998-02-12 | 2003-12-22 | 東芝エンジニアリング株式会社 | Motor equipment |
-
2014
- 2014-12-17 JP JP2014255331A patent/JP6121980B2/en active Active
-
2015
- 2015-12-16 CN CN201510951804.4A patent/CN105720749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6397358U (en) * | 1986-12-11 | 1988-06-23 | ||
| KR100201700B1 (en) * | 1994-11-30 | 1999-06-15 | 오상수 | Automatic controlling device for a brush |
| CN1317077A (en) * | 1998-09-09 | 2001-10-10 | Smc株式会社 | Motor-driven actuator |
| JP2002325397A (en) * | 2001-04-26 | 2002-11-08 | Toshiba Corp | Current collector of dynamo-electric machine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111837319A (en) * | 2018-03-12 | 2020-10-27 | 东芝三菱电机产业系统株式会社 | Rotating electric machine and bearing bracket |
| CN111837319B (en) * | 2018-03-12 | 2022-08-02 | 东芝三菱电机产业系统株式会社 | Rotating electric machine and bearing bracket |
| CN111788419A (en) * | 2018-03-23 | 2020-10-16 | 伊格尔工业股份有限公司 | Mechanical seal |
| US11402023B2 (en) | 2018-03-23 | 2022-08-02 | Eagle Industry Co., Ltd. | Mechanical seal |
| CN111788419B (en) * | 2018-03-23 | 2023-08-01 | 伊格尔工业股份有限公司 | Mechanical seal |
| CN111006119A (en) * | 2018-10-05 | 2020-04-14 | 东芝三菱电机产业系统株式会社 | Rotating electric machine, oil drain box and air supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6121980B2 (en) | 2017-04-26 |
| CN105720749B (en) | 2020-02-21 |
| JP2016116407A (en) | 2016-06-23 |
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