CN201467036U - Carbon brush lifting device - Google Patents
Carbon brush lifting device Download PDFInfo
- Publication number
- CN201467036U CN201467036U CN2009201256293U CN200920125629U CN201467036U CN 201467036 U CN201467036 U CN 201467036U CN 2009201256293 U CN2009201256293 U CN 2009201256293U CN 200920125629 U CN200920125629 U CN 200920125629U CN 201467036 U CN201467036 U CN 201467036U
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- weight
- guide rod
- slip ring
- motor
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a carbon brush lifting device. The device comprises a centrifugal short connection system for a heavy punch, a slip ring system and a carbon brush lifting system which are sequentially arranged along the radial direction of a rotating shaft of a motor. Before motor starting is accomplished, under the pulling force of a spring, the heavy punch is approach to a shaft center, a moving contact and a fixed contact are driven to be separated by a guide rod and a cutting-out guide rod, and a carbon brush holder under the action of a compression spring of a lifting electromagnetic device leads the carbon brush to be closely contacted with the slip ring; when the rotation speed of the motor achieves a rated value, centrifugal force acting on the heavy punch overcomes the pulling force of the spring and presses the moving and the fixed contacts together, and a rotor winding of the motor is in short connection; after starting time, a time relay is switched on to control a relay of the lifting electromagnetic device, and after being electrified, the lifting electromagnetic device lifts the carbon brush holder, thereby accomplishing the complete starting process; and after shut down, the lifting electromagnetic device losses electricity, the heavy punch does not have centrifugal force, and components are respectively restored to the states before starting. The device has the advantages of reliable running, simple structure and reduced maintenance times of motor in a production process.
Description
Technical field
The utility model relates to the starting field of large wound formula asynchronous motor, relates in particular to contact and the device that separates between control carbon brush and the slip ring.
Background technology
In the prior art, carbon brush and slip ring continue to keep in touch behind the large wound formula asynchronous motor starting, are in the process of friction and wear, cause the loose contact between carbon brush and the slip ring and need often maintenance easily like this.In order to address this problem, the Japanese fuji motor provides a kind of carbon brush lifting device, its operation principle is by lifting device motor drives gear, shift fork running when progressively excising resistance according to the starting time, shift fork promotes the short contact ring along motor axial motion and the fixed contact short circuit that rotates with the axis that connects winding, by another shift fork carbon brush holder is mentioned realization carbon brush and slip ring separating behind motor starting behind the short circuit.Yet the carbon brush lifting device complex structure of FUJI ELECTRIC, mechanical moving element is many, and reliability is not high during operation.
Summary of the invention
At the deficiencies in the prior art, the utility model aim to provide a kind of when starting carbon brush can well contact with slip ring; Starting back carbon brush separates with slip ring, and simple in structure, reliable carbon brush lifting device.
The technical solution of the utility model: on machine shaft one end outer circumference surface, at first establish one and be the axle collar of interference fit with this rotating shaft; On the outer circumference surface of the axle collar, be symmetrical arranged 2～3 pairs of weight centrifugal devices.Described weight centrifugal device comprises one the one end margin round-meshed cylindrical weight cover of opening other end end face that turns up, be the cylindrical weight of matched in clearance with described weight cover, and an end and the end face of the weight extension spring that the other end connects with the annulus outer circumference surface that links; The shape and the axle collar outer circumference surface shape of described weight cover openend are suitable; The pulling force of extension spring is greater than the weight of weight.On the other end of described weight with respect to the extension spring connection screwed hole is arranged; The guide rod that one end has a screw thread passes circular hole that described weight puts and the screwed hole of weight connects firmly, the other end of guide rod has connection seat, connect firmly by described connection seat guide rod and short circuit guide rod, be fixed with moving contact head on the short circuit guide rod respectively, the axis direction of described moving contact head is consistent with guide rod axis bearing of trend; One end of described moving contact is opening-like opposed with end fixed contact, the other end of described fixed contact is fixed on the slip ring, perhaps make one with slip ring, described slip ring is provided with 2～3 slip ring spiders, and the bottom of slip ring spider is provided with on the outer circumference surface that insulating base is connected in the axle collar.The outer circumference surface of described slip ring contacts with carbon brush, described carbon brush is connected on the carbon brush holder by elastic steel sheet, described carbon brush holder connects with the telescopic shaft that promotes electromagnetic device at medium position, the telescopic shaft tail end also is provided with a compression spring in promoting electromagnetic device, promote electromagnetic device not electric before, described compression spring well contacts carbon brush and slip ring maintenance.Promote electromagnetic device and be fixed on the square or circular framework with installing hole, described framework and electric motor end cap are linked together, and whole lifting device is in described framework.
The outside institute of lifting device connects starting, and sensor or resistance electric loop are constant frequently, only increase by a time relay and promote the relay of electromagnetic device; Before the electric motor starting, weight is subjected to the effect of spring force, and is close to the axle center, and by guide rod, the short circuit guide rod drives moving contact to be separated with fixed contact, to pressing down, carbon brush closely contacted with slip ring under the compression spring action of carbon brush holder in self gravitation and lifting electromagnetic device; In the motor starting process, the same with existing starting process, frequently sensor or resistance progressively excise according to the requirement of starting time, starting current, the rotating speed of motor rotor has zero beginning progressively to increase, when rotating speed is increased to certain value, the suffered centrifugal force of weight is greater than the pulling force of extension spring, weight is to moving away from axis direction, and pass through guide rod, the short circuit guide rod drives moving contact and contacts with fixed contact, and when rotor speed reached the volume rotating speed, it is maximum that the suffered centrifugal force of weight reaches, moving contact is crimped on tightly motor rotor winding short circuit with fixed contact; Reach starting and finish behind the setting-up time, the time relay is connected the relay that control promotes electromagnetism, promotes electromagnetic device and gets; carbon brush holder is mentioned, so far finish whole starting process. after motor is shut down, promote the electromagnetic device dead electricity; weight does not have centrifugal action, all gets back to pre-start state, like this; when starting; carbon brush closely contacts with slip ring, and after starting finished, carbon brush separated with slip ring; reduce the wearing and tearing of motor carbon brush in service, reduced the maintenance number of times of motor.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of first kind of execution mode of the utility model carbon brush lifting device;
Fig. 2 is that Figure 1A-A is to the sectional structure schematic diagram;
Fig. 3 is the sectional structure schematic diagram of second kind of execution mode of the utility model carbon brush lifting device.
The utility model is described in further detail below in conjunction with accompanying drawing.
In the accompanying drawing: the 1-axle collar, 2-weight cover, 3-extension spring, the 4-weight, 5-guide rod, 6-short circuit guide rod, the 7-moving contact, 8-fixed contact, 9-slip ring, the 10-carbon brush, 11-elastic steel sheet, 12-carbon brush holder, 13-promotes electromagnetic device, 14-framework, 15-rotating shaft, the 16-rotor coil conducting wire, 17-slip ring spider, 18-insulating base.
Embodiment
As attached illustrated in figures 1 and 2,, on machine shaft 15 1 end outer circumference surfaces, at first be provided with one and be the axle collar 1 of interference fit with this rotating shaft 15 as first kind of execution mode of the present utility model; On the outer circumference surface of the axle collar 1, be symmetrical arranged 3 pairs of weight centrifugal devices, this weight centrifugal device comprises one the one end margin round-meshed cylindrical weight cover 2 of opening, other end end face that turns up, and is the cylindrical weight 4 of matched in clearance and an end and the end face of weight 4 extension spring 3 that the other end connects with the annulus outer circumference surface that links with this weight cover.This weight overlaps 2 openend shapes and the axle collar 1 outer circumference surface shape is suitable, and the pulling force of extension spring 3 is greater than the weight of weight 4.The other end that weight 4 connects with respect to extension spring and weight overlap 2 circular hole correspondence positions and are placed with screwed hole, the guide rod 5 that one end has a screw thread passes circular hole on the weight cover 2 and the screwed hole of weight connects firmly, the other end of guide rod 5 has connecting firmly of connection seat realization and short circuit guide rod 6, on this connects firmly the short circuit guide rod 6 at position, be processed with screwed hole respectively and realize and screwed the connecting firmly of moving contact 7 one ends, also can be at the short circuit guide rod 6 that connects firmly position machining hole and realizing and moving contact 7 one end interference fit joint respectively; The axis direction of moving contact 7 is consistent with guide rod 5 axis bearing of trends, and the outer end of moving contact 7 is opening-like, and is corresponding with an end of fixed contact 8; The other end of fixed contact 8 is fixed on the copper slip ring 9, and perhaps fixed contact 8 is made an integral body with slip ring 9, and slip ring 9 is provided with 2～3 slip ring spiders 17, and the bottom of slip ring spider 17 is provided with insulating base 18 and realizes and the connecting firmly of the axle collar 1.Also be provided with through wires hole on insulating base 18, rotor coil conducting wire 16 connects with copper slip ring spider 17 through through wires hole by the through hole of rotating shaft 15 heart portions again.The outer circumference surface of slip ring 9 contacts with carbon brush 10, carbon brush 10 connects firmly on carbon brush holder 12 by elastic steel sheet 11 and is integral, elastic steel sheet 11 is positioned on the bearing of trend of guide rod 5, fixed contact 7, the lateral middle position of carbon brush holder connects firmly with telescopic shaft one end that promotes electromagnetic device 13, in the telescopic shaft the other end that promotes electromagnetic device 13 the compression spring can also be set, increase the contact force of carbon brush 10 and copper slip ring.Promote electromagnetic device 13 and be fixed on the square or circular framework 14 with installing hole, framework 14 connects firmly with electric motor end cap.
As shown in Figure 3, as second kind of execution mode of the present utility model, two ends are symmetrical arranged 2 pairs of weight centrifugal devices and corresponding with slip ring 9 respectively on the outer circumference surface of the axle collar 1, just remove the centre to the weight centrifugal device on first kind of execution mode basis; Can realize that so same function but makes whole device simpler.
Carbon brush lifting device of the present utility model is reliable in actual production process, obviously reduces the maintenance frequency of motor, has improved production efficiency.
Claims (5)
1. carbon brush lifting device, comprise machine shaft (15), slip ring (9), carbon brush (10), it is characterized in that: on machine shaft (15) one end outer circumference surfaces, be provided with one and be the axle collar (1) of interference fit, on the outer circumference surface of the axle collar (1), be symmetrical arranged 2～3 pairs of weight centrifugal devices with this rotating shaft (15); This weight centrifugal device by one one end margin turn up the round-meshed cylindrical weight cover of opening other end end face (2), be the cylindrical weight (4) of matched in clearance and an end with this weight cover and connect that the other end connects with axle (1) ring and pulling force spring (3) formation with weight (4) greater than weight (4) weight; The shape of weight cover (2) openend and the outer circumference surface shape of the axle collar (1) are suitable, and the weight end face is provided with screwed hole corresponding to weight cover circular hole place, and circular hole and weight that the guide rod (5) that an end has a screw thread passes weight cover (2) connect firmly; The other end of guide rod (5) and vertical the connecting firmly of short circuit guide rod (6) connect firmly the moving contact (7) consistent with guide rod (5) extending direction on short circuit guide rod (6), the opening-like end with fixed contact (8) of moving contact (7) one ends is corresponding; Fixed contact (8) is fixed on the slip ring (9), slip ring (9) body has slip ring spider (17) and is fixed on the outer circumference surface of the axle collar (1), slip ring (9) outer circumference surface contacts with carbon brush (10), carbon brush (10) connects firmly by elastic steel sheet (11) and carbon brush holder and is integral, medium position at carbon brush holder connects with the telescopic shaft that promotes electromagnetic device (13), promotes electromagnetic device and is positioned on the framework (14) with installing port.
2. carbon brush lifting device according to claim 1 is characterized in that: the short circuit guide rod has screwed hole on (6), and an end of moving contact (7) is threaded.
3. carbon brush lifting device according to claim 1 and 2 is characterized in that: be provided with the compression spring at the tail end that promotes electromagnetic device (13) telescopic shaft.
4. carbon brush lifting device according to claim 3 is characterized in that: guide rod (5) is provided with the connection seat that links with short circuit guide rod (6) with respect to the other end of the end of thread.
5. carbon brush lifting device according to claim 1 and 2 is characterized in that: guide rod (5) is provided with the connection seat that links with the short circuit guide rod with respect to the other end of the end of thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201256293U CN201467036U (en) | 2009-08-12 | 2009-08-12 | Carbon brush lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201256293U CN201467036U (en) | 2009-08-12 | 2009-08-12 | Carbon brush lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201467036U true CN201467036U (en) | 2010-05-12 |
Family
ID=42394383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201256293U Expired - Lifetime CN201467036U (en) | 2009-08-12 | 2009-08-12 | Carbon brush lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201467036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848670A (en) * | 2015-12-03 | 2017-06-13 | 林德股份公司 | For the negative contact element and slip-ring motor of slip-ring motor |
| CN111048965A (en) * | 2019-12-19 | 2020-04-21 | 武汉航空仪表有限责任公司 | Helicopter main rotor deicing long-life collector ring |
-
2009
- 2009-08-12 CN CN2009201256293U patent/CN201467036U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848670A (en) * | 2015-12-03 | 2017-06-13 | 林德股份公司 | For the negative contact element and slip-ring motor of slip-ring motor |
| CN106848670B (en) * | 2015-12-03 | 2020-12-01 | 林德股份公司 | Female contact element for a slip-ring machine and slip-ring machine |
| CN111048965A (en) * | 2019-12-19 | 2020-04-21 | 武汉航空仪表有限责任公司 | Helicopter main rotor deicing long-life collector ring |
| CN111048965B (en) * | 2019-12-19 | 2021-04-23 | 武汉航空仪表有限责任公司 | Helicopter main rotor deicing long-life collector ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101621270B (en) | Carbon brush lifting device | |
| CN201467036U (en) | Carbon brush lifting device | |
| CN209200872U (en) | A kind of reliable motor of commutation | |
| CN203967461U (en) | A kind of light steering gear | |
| CN101856883A (en) | Structure of clutch brake for high-speed press | |
| CN201536333U (en) | Brushless starting device for wound rotor asynchronous motor | |
| CN2669465Y (en) | Brushless excitation generator with detecting device | |
| CN201312224Y (en) | Series motor of tumbling-box washing machine | |
| CN107404198A (en) | Motor | |
| CN204538892U (en) | A kind of engine electric igniter finite angle motor | |
| CN210405048U (en) | Double-rotor generator | |
| CN203645477U (en) | Motor shaft current eliminating device | |
| CN205195604U (en) | Single -phase asynchronous motor starting drive | |
| CN110729841A (en) | Electric brush lifting device for wound three-phase asynchronous motor | |
| CN105141108B (en) | A kind of super clutch permanent-magnet speed governor | |
| CN204633544U (en) | A kind of intelligent starting capacitive means | |
| CN101272071A (en) | Frequency conversion electric motor grounding device | |
| CN203761211U (en) | Automobile starting motor | |
| CN205172788U (en) | Starter and electromagnetic switch thereof | |
| CN204906110U (en) | High efficiency motor | |
| CN108942166A (en) | The pre- apparatus for leveling of centrifugal fan impeller press fitting | |
| CN103683737A (en) | Winding lead head clamping device | |
| CN202102978U (en) | Novel starter electromagnetic switch | |
| CN210669705U (en) | Electric brush lifting device for wound three-phase asynchronous motor | |
| CN201063484Y (en) | Small electric motor for hoist |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090812 |