CN1021476C - Magnetic powder starting planetary speed reducer - Google Patents
Magnetic powder starting planetary speed reducer Download PDFInfo
- Publication number
- CN1021476C CN1021476C CN 91107509 CN91107509A CN1021476C CN 1021476 C CN1021476 C CN 1021476C CN 91107509 CN91107509 CN 91107509 CN 91107509 A CN91107509 A CN 91107509A CN 1021476 C CN1021476 C CN 1021476C
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- CN
- China
- Prior art keywords
- gear ring
- magnetic powder
- casing
- present
- speed reducer
- 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 - Fee Related
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- Structure Of Transmissions (AREA)
- Friction Gearing (AREA)
Abstract
The present invention belongs to the technical field of mechanical transmission. The present invention has a planet speed reduction transmission mechanism composed of a sun gear, a driving shaft, a planet gear, a planet carrier, a driven shaft, a gear ring and a casing. The present invention is characterized in that an electromagnetic coil and an electromagnetic clutch which cooperate with the gear ring are respectively fixed in the casing, and the working gap between the electromagnetic coil and the gear ring is filled with magnetic powder. In the present invention, the electromagnetic start and the planet speed reducer are integrated; the present invention has the advantages of compact structure, small size, short transmission distance, reliable operation, high transmission efficiency and little self power consumption, and is suitable for frequent quick starts.
Description
A kind of magnetic powder starting planetary speed reducer belongs to the mechanical transmissioning technology field.
General power of electric motor greater than 18.5KW or power engine when having device than heavy load and connect, the across-the-line starting meeting produces bigger impact, even fail to start, usually adopt increase equipment design power for this reason or between power engine and load, be provided with and flexibly connect transmission device, do soft start as fluid coupling or magnetic powder clutch, but these two kinds of devices all exist consumable power big, slippage operation during heavy service, shortcomings such as speed instability, and increase the waste that plant capacity can cause the energy.
The objective of the invention is for various power engines under severe duty, can directly start reposefully and move, and a kind of direct transmission device of rigidity that omits flexible connecting device is provided, thereby reduce the transmission power loss, shorten the transmission distance, make transmission device simpler, reliable.
The technical solution that realizes above-mentioned purpose is: constitute a planet reduction gearing mechanism by sun gear and driving shaft, planet wheel, planetary carrier and driven shaft, gear ring, casing, and in casing, fix an electromagnetic coil that matches with gear ring and a magnetic clutch respectively, filling magnetic in the working clearance of electromagnetic coil and gear ring.
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is circuit theory diagrams of the present invention.
The invention will be further described with an embodiment below in conjunction with accompanying drawing.
Sun gear (5) is connected with driving shaft (9), and planet wheel (4) is meshed with sun gear (5), gear ring (2) respectively, and the planetary carrier (6) that planet wheel (4) is installed is connected with driven shaft (10), constitutes a planet reduction gearing mechanism thus; Be covered with electromagnetic coil (1) in the outside of gear (2), it is fixed in the inner face of casing (8), is filled with ferrum,cobalt and nickel magnetic powder (3) in the working clearance of gear ring (2) and electromagnetic coil (1); An inner side surface of casing (8) is fixed with the friction disk type magnetic clutch (7) that cooperates with an axial sides of gear ring (2) in addition, so just constituted the present invention-magnetic powder starting planetary speed reducer.When power engine need start, press starter button DA, the coil CLH of magnetic clutch (7) promptly switches on, and magnetic clutch (7) is loosened, and its friction plate disengaging contacts with gear ring (2), and gear ring this moment (2) promptly is in free rotary state; The time delay relay SJ that in circuit, switches on simultaneously with coil CLH
1, its time-delay can be transferred within 1 second, because SJ
1The contact close, make the energising of JCZ contactor, and making the auxiliary contact self-insurance of JCZ, the main circuit of motor YD is connected, electric motor starting, driving shaft (9) rotation, and by sun gear (5) transmission planet wheel (4) drive gear ring (2) running, planet wheel this moment (4) turns round around sun gear (5) and fail to drive planetary carrier (6) only by the transmission rotation, thereby the load of power engine is the resistance of gear, bearing and the magnetic hysteresis resistance that magnetic remanent magnetism causes at this moment, and its value is very little; But in the time of electric motor starting, another auxiliary contact on-delay relay SJ of JCZ
2, 2-3 second is transferred in this time-delay, SJ behind the assurance electric motor starting
2Make contact, excitation power supply HR is powered to electromagnetic coil (1) CL, thereby electromagnetic coil (1) produces magnetic field and makes magnetic (3) magnetization, and formation magnetization chain, gear ring (2) to rotation produces braking moment, this moment is passed to planetary carrier (6) through planet wheel (4), so to the load output torque that is connected with driven shaft (10), and the size of braking moment is directly proportional with the size of exciting curent, when exciting curent constantly increases, when the output torque of planetary carrier (6) was equal to or greater than the required moment of torsion of load starting, load began slow rotation; Be connected on the time relay sj in the circuit
3Be to control starting process cumulative time, it can set up the regular hour according to the concrete condition of equipment and the length of actual starting process, guarantees the contact SJ that makes magnetic clutch preceding after starting process is finished
3Open, cut off the power supply of magnetic clutch (7), this moment, magnetic clutch (7) medi-spring was upheld, and its friction plate contacts with gear ring (2) is outside, and gear ring (2) is locked; At the same time, another contact SJ in the circuit
3Make time delay relay SJ
4Energising, this time-delay adjustablely is decided to be 1 second, guarantees after magnetic clutch (7) the CLH action again normally-closed contact SJ
4Open, cut off the exciting circuit of electromagnetic coil (1) CL.Whole starting process finishes, normal operation input, and system becomes common planetary reducer.
The present invention is simple in structure, reliable operation, and the transmission efficiency height, its concrete advantage is as follows:
1. the present invention is designed to one to the electromagnetism starting with planetary reduction gear, compact conformation, and volume is little, the transmission Distance Shortened. Gearratio can directly be made decelerator and use between 4-12 the time, also can do the elementary of multi-stage speed reducer, the deceleration smooth start when guaranteeing large speed ratio.
Since this device after starting is finished, adopt the locking gear ring, close the method for excitation power supply, after making system enter normal operation, the magnetic brake portion promptly breaks away from operation, need to participate in the power loss that operation is caused thereby overcome fluid coupling or magnetic powder clutch always, also reduced fluid coupling or magnetic powder clutch need to force cooling owing to long-time running supplementary equipment and auxiliary power in addition.
3. because this device can make the power engine soft start, can reduce the equipment design power that increases owing to the bringing onto load starting, reach purpose of energy saving.
4. friction driving is adopted in the locking of gear ring, can reach overload protection total system.
5. the dynamic responding speed of magnetic transmitting torque is exceedingly fast, and generally within several milliseconds, so this device is suitable for frequently, quick starting.
Claims (4)
1, a kind of magnetic powder starting planetary speed reducer, has the planet speed reduction driving mechanism that constitutes by sun gear (5) and driving shaft (9), planet wheel (4), planetary carrier (6) and driven shaft (10), gear ring (2), casing (8), it is characterized in that being fixed with respectively in the casing (8) electromagnetic coil (1) and the magnetic clutch (7) that match with gear ring (2), be filled with magnetic (3) in the working clearance of electromagnetic coil (1) and gear ring (2).
2, by the described magnetic powder starting planetary speed reducer of claim 1, it is characterized in that electromagnetic coil (1) is to be fixed in casing (8) inner face, and cover in the outside of gear ring (2).
3,, it is characterized in that magnetic clutch (7) is to be fixed on the casing (8) of an axial sides of gear ring (2) by claim 1 or 2 described magnetic powder starting planetary speed reducers.
4, by the described magnetic powder starting planetary speed reducer of claim 3, it is characterized in that magnetic clutch (7) is a friction-type electromagnetic clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107509 CN1021476C (en) | 1991-10-19 | 1991-10-19 | Magnetic powder starting planetary speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107509 CN1021476C (en) | 1991-10-19 | 1991-10-19 | Magnetic powder starting planetary speed reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1062025A CN1062025A (en) | 1992-06-17 |
| CN1021476C true CN1021476C (en) | 1993-06-30 |
Family
ID=4908846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107509 Expired - Fee Related CN1021476C (en) | 1991-10-19 | 1991-10-19 | Magnetic powder starting planetary speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021476C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079031C (en) * | 1999-12-01 | 2002-02-13 | 常立华 | Chinese medicine composition for treating toothache |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3311543B2 (en) * | 1995-06-12 | 2002-08-05 | 本田技研工業株式会社 | Power transmission device |
| CN103277471B (en) * | 2013-06-27 | 2015-08-26 | 重庆理工大学 | Magnetic flow liquid and memory alloy alternative transmission device |
| CN111786509B (en) * | 2020-07-24 | 2021-10-26 | 合肥工业大学 | Integrated motor clutch coupling actuator |
-
1991
- 1991-10-19 CN CN 91107509 patent/CN1021476C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079031C (en) * | 1999-12-01 | 2002-02-13 | 常立华 | Chinese medicine composition for treating toothache |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1062025A (en) | 1992-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |