CN2163887Y - Non-round planetary low-speed large-torque hydraulic motor - Google Patents
Non-round planetary low-speed large-torque hydraulic motor Download PDFInfo
- Publication number
- CN2163887Y CN2163887Y CN 93221257 CN93221257U CN2163887Y CN 2163887 Y CN2163887 Y CN 2163887Y CN 93221257 CN93221257 CN 93221257 CN 93221257 U CN93221257 U CN 93221257U CN 2163887 Y CN2163887 Y CN 2163887Y
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- round
- pitch curve
- hydraulic motor
- gear
- motor
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Abstract
The utility model relates to a non-round planetary gear type low-speed large-torque hydraulic motor, which is mainly composed of a non-round outer gear, a plurality of cylindrical planetary gears, a non-round inner geared ring, an end cover, a port plate and an output shaft. A structural form that the difference between pitch curve periodicity of the non-round inner geared ring and the pitch curve periodicity of the non-round outer gear is 2 is adopted. The displacement volume ratio of the hydraulic motor can be raised; the area of an oil distributing hole can be increased; the flow distributing performance of the motor can be improved; the diameter of a planetary wheel can be increased; the carrying capacity of the motor can be enhanced. The motor also has the advantages of simple structure, large starting torque, strong anti-pollution ability, low cost, long service life, easy use and maintenance, etc.
Description
The utility model belongs to the variable capacity motor of liquid driven.Use more low speed high torque hydraulic motor at present and mostly be plunger hydraulic motor, though plunger hydraulic motor has many different types again by divisions such as structure, working principles, they have a common characteristic, include trunk piston set exactly.Because the existence of trunk piston set, make plunger hydraulic motor very strict requirement all be arranged, and complex structure, cost an arm and a leg, be difficult to maintenance the filter precision of material, machining accuracy, working oil etc.Pole B.Sieniawski was applied to oil hydraulic motor with non-circular planetary gear mechanism first in 1977, had successfully developed SOK type non-circular planetary gear low speed high torque hydraulic motor.This motor has obtained state's patents such as Poland, the U.S., and is produced in batches by producers such as Poland extra large Te Luositai shipyards.Simple in structure, advantages such as starting torque is big, contamination resistance is strong, volume is little, low price, life-span length that this oil hydraulic motor has, thereby won market very soon, progressively replaced the Si Dafa motor of Britain in Poland.The core of this oil hydraulic motor is a non-circular planetary gear mechanism, comprises a non-round ring gear, a non-round external gear and some cylindrical planetary gears.The type of motor can be by the pitch curve periodicity n of non-round external gear 1
1Pitch curve periodicity n with non-round ring gear 3
3Combination represent, for example: n
1=3, n
3=4 is 34 types, n
1=4, n
3=6 is 46 types.SOK type oil hydraulic motor is 34 types, and promptly the pitch curve periodicity of its non-round external gear is 3, and the pitch curve periodicity of non-round ring gear is 4, and its essential characteristic is that the difference of the pitch curve periodicity of two noncircular gears is 1, is referred to as to differ from a type structure.Theory analysis and calculating show that the displacement volume ratio of the oil hydraulic motor of this pattern is not an optimum, and the area of oil distributing hole is less, makes the flow velocity of working oil excessive, has reduced the dosing performance of motor.In addition, the diameter of planet wheel is less, is unfavorable for improving bearing capacity.
At the problems referred to above, the purpose of this utility model is: (1) improves the displacement volume ratio of oil hydraulic motor.(2) increase the area of oil distributing hole, improve the flow performance of oil hydraulic motor.(3) diameter of increase planet wheel improves bearing capacity.
To achieve these goals, the novel employing of this reality differs from 2 type structures, i.e. the pitch curve periodicity n of its non-round ring gear
3Pitch curve periodicity n with non-round external gear
1Difference be 2, as structures such as 35 types, 46 types, 57 types, 68 types.As shown in Figure 1, this motor mainly is made up of non-round external gear 1, cylindrical gears 2, non-round ring gear 3, end cap 4, thrust plate 5 and output shaft 6.Wherein end cap 4, thrust plate 5 connect firmly with non-round ring gear 3 and are in the same place, and have constituted the housing of motor.Output shaft 6 links by pin 7 and non-round external gear 1, realizes the output of oil hydraulic motor.Planetary pinion 2 floats and is installed between non-round external gear 1 and the non-round ring gear 3 its number m
2Pitch curve periodicity n for non-round external gear
1Pitch curve periodicity n with non-round ring gear
3Sum, i.e. m
2=n
1+ n
3Non-round external gear 1, non-round ring gear 3, end cap 4 and thrust plate 5 surround the annular space that forms and have been separated into m by planet wheel
2Individual airtight little space.Along with the rotation of non-round external gear 1, planetary pinion 2 also is in constant motion, and the volume in each airtight little space is constantly changed.When the volume in airtight little space changes from small to big, finish oil-absorbing process from corresponding oil-sucking hole, when the volume in airtight little space from large to small the time, finish the oil extraction process from corresponding oil drainage hole.Instantaneous arbitrarily, the flow that flows through motor equal this instantaneous all just in oil suction (or oil extraction) the flow sum in the airtight little space of oil suction (or oil extraction).Oil distributing hole is opened on the thrust plate 5, and its number P is non-round ring gear pitch curve periodicity n
32 times, i.e. P=2n
3, n wherein
3Individual oil inlet hole and n
3Individual oil drainage hole.The position of oil distributing hole, shape and neglect different pitch curve design parameters greatly and difference can be tried to achieve by designing and calculating.
The utility model also has following three outstanding advantages except simple in structure, the advantages such as starting torque is big, contamination resistance is strong, low price, life-span are long that have that SOK type oil hydraulic motor had:
1. displacement volume has a more substantial increase than (being the discharge capacity of unit motor volume).Compare with 34 types, the condition lower volume that equates in discharge capacity is littler, or discharge capacity is bigger under the condition that volume equates.Compare with 34 type motors as the 35 type motors that the utility model is designed, displacement volume is than improving 21%.
2. the oil distributing hole area increases, and has improved the flow performance.Compare with 34 type motors of same discharge capacity as the 35 type motors that the utility model is designed, the oil distributing hole area improves 70%.
Since the planetary pinion diameter increase relatively, thereby improved the bearing capacity of whole motor.Because planetary contact strength is the principal element of decision motor load bearing ability, and the increase of planetary pinion diameter has improved its contact strength.
Below accompanying drawing is made brief description.
Accompanying drawing 1 is the designed hydraulic motor structure schematic representation of the utility model.
Accompanying drawing 2 is end view of 35 type oil hydraulic motors, and the pitch curve periodicity of its non-round external gear is 3, and the pitch curve periodicity of non-round ring gear is 5, and the planet wheel number is 8, and the number of oil distributing hole is 10.
Accompanying drawing 3 is end view of 46 type oil hydraulic motors, and the pitch curve periodicity of its non-round external gear is 4, and the pitch curve periodicity of non-round ring gear is 6, and the planet wheel number is 10, and the number of oil distributing hole is 12.
Accompanying drawing 4 is end view of 57 type oil hydraulic motors, and the pitch curve periodicity of its non-round external gear is 5, and the pitch curve periodicity of non-round ring gear is 7, and the planet wheel number is 12, and the number of oil distributing hole is 14.
Accompanying drawing 5 is end view of 68 type oil hydraulic motors, and the pitch curve periodicity of its non-round external gear is 6, and the pitch curve periodicity of non-round ring gear is 8, and the planet wheel number is 14, and the number of oil distributing hole is 16.
In above each figure:
The non-round ring gear 4-end cap of the non-round external gear 2-planetary pinion 3-of 1-
5-thrust plate 6-output shaft 7-pin
A-oil inlet hole B-oil drainage hole
As previously mentioned, the critical component that non-round external gear and non-round ring gear are whole oil hydraulic motors, the difficulty or ease of its manufacturing have determined the difficulty or ease that whole motor is made, the precision of its processing has determined the quality of whole motor performance.Adopt the domestic existing digital control gear shaper to process non-round external gear and non-round ring gear, make that their processing is simple.By improving the anchor clamps of digital control gear shaper, can guarantee the machining accuracy of noncircular gear with data computing precision and design specialized.
Claims (6)
1, a kind of non-circular planetary gear formula low speed high torque hydraulic motor is characterized in that the pitch curve periodicity n of non-round ring gear
3Pitch curve periodicity n with non-round external gear
1Difference be 2, i.e. n
3=n
1+ 2.
2, oil hydraulic motor according to claim 1 is characterized in that mainly being made up of noncircular gear 1, cylindrical planetary gear 2, non-round ring gear 3, end cap 4, thrust plate 5 and output shaft 6.End cap, thrust plate connect firmly mutually with non-round ring gear, and non-round external gear and output shaft link, and planetary pinion floats and is installed between non-round external gear and the non-round ring gear, and oil distributing hole is opened on the thrust plate.
3, oil hydraulic motor according to claim 1 is characterized in that the pitch curve periodicity n of non-round ring gear
3Be 5, the pitch curve periodicity n of non-round external gear
1Be 3.
4, oil hydraulic motor according to claim 1 is characterized in that the pitch curve periodicity n of non-round ring gear
3Be 6, the pitch curve periodicity n of non-round external gear
1Be 4.
5, oil hydraulic motor according to claim 1 is characterized in that the pitch curve periodicity n of non-round ring gear
3Be 7, the pitch curve periodicity n of non-round external gear
1Be 5.
6, oil hydraulic motor according to claim 1 is characterized in that the pitch curve periodicity n of non-round ring gear
3Be 8, the pitch curve periodicity n of non-round external gear
1Be 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221257 CN2163887Y (en) | 1993-08-12 | 1993-08-12 | Non-round planetary low-speed large-torque hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93221257 CN2163887Y (en) | 1993-08-12 | 1993-08-12 | Non-round planetary low-speed large-torque hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2163887Y true CN2163887Y (en) | 1994-05-04 |
Family
ID=33800158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93221257 Expired - Fee Related CN2163887Y (en) | 1993-08-12 | 1993-08-12 | Non-round planetary low-speed large-torque hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2163887Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586523B (en) * | 2009-06-30 | 2011-09-28 | 合肥航天液压机械有限公司 | Noncircular planetary gear hydraulic motor |
| CN103362731A (en) * | 2012-06-07 | 2013-10-23 | 北京航天试验技术研究所 | Valve plate of square and hexagon type non-circular gear planetary gear train hydraulic motor and hydraulic motor |
| CN103375330A (en) * | 2012-06-07 | 2013-10-30 | 北京航天试验技术研究所 | Flow distributing disc of hexagonal-octagonal type non-circular gear planetary-gear-train hydraulic motor and hydraulic motor |
| CN103883864A (en) * | 2012-04-20 | 2014-06-25 | 吴小平 | Hydraulic motor of planetary gear pump with singular teeth and volume varying technology for same |
| CN104265560A (en) * | 2014-09-18 | 2015-01-07 | 武汉理工大学 | Dual-output inner-rotor non-conical gear hydraulic motor |
| CN110370924A (en) * | 2019-07-15 | 2019-10-25 | 肇庆高新区伙伴汽车技术有限公司 | Gear-type hydraulic driver and its automatic catch automobile |
-
1993
- 1993-08-12 CN CN 93221257 patent/CN2163887Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586523B (en) * | 2009-06-30 | 2011-09-28 | 合肥航天液压机械有限公司 | Noncircular planetary gear hydraulic motor |
| CN103883864A (en) * | 2012-04-20 | 2014-06-25 | 吴小平 | Hydraulic motor of planetary gear pump with singular teeth and volume varying technology for same |
| CN103362731A (en) * | 2012-06-07 | 2013-10-23 | 北京航天试验技术研究所 | Valve plate of square and hexagon type non-circular gear planetary gear train hydraulic motor and hydraulic motor |
| CN103375330A (en) * | 2012-06-07 | 2013-10-30 | 北京航天试验技术研究所 | Flow distributing disc of hexagonal-octagonal type non-circular gear planetary-gear-train hydraulic motor and hydraulic motor |
| CN103375330B (en) * | 2012-06-07 | 2015-10-21 | 北京航天试验技术研究所 | The thrust plate of six or eight type hydraulic motor for non-circular epicyclic train and oil hydraulic motor |
| CN104265560A (en) * | 2014-09-18 | 2015-01-07 | 武汉理工大学 | Dual-output inner-rotor non-conical gear hydraulic motor |
| CN110370924A (en) * | 2019-07-15 | 2019-10-25 | 肇庆高新区伙伴汽车技术有限公司 | Gear-type hydraulic driver and its automatic catch automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |