CN202402575U - Non-circular planetary gear mechanism - Google Patents
Non-circular planetary gear mechanism Download PDFInfo
- Publication number
- CN202402575U CN202402575U CN 201120557958 CN201120557958U CN202402575U CN 202402575 U CN202402575 U CN 202402575U CN 201120557958 CN201120557958 CN 201120557958 CN 201120557958 U CN201120557958 U CN 201120557958U CN 202402575 U CN202402575 U CN 202402575U
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- Prior art keywords
- oil
- planetary
- gear
- internal gear
- hydraulic motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
Abstract
A non-circular planetary gear mechanism used in a non-circular planetary gear hydraulic motor is formed by an internal gear, an internal gear sleeve and a plurality of multiple planetary gears through matching, wherein the internal gear is matched with an output shaft; both sides of the planetary gear mechanism are matched with an inlet oil distribution disc and a return oil distribution disc both of the hydraulic motor; a working cavity is formed between the planetary gears, the internal gear, the internal gear sleeve and the inlet oil distribution disc as well as the return oil distribution disc; and further, along with the rotation of the internal gear and the planetary gears, the working cavity is respectively communicated with oil inlet holes in the inlet oil distribution disc and oil return holes in the return oil distribution disc. The non-circular planetary gear mechanism is characterized in that oil passing holes are formed in the planetary gears, so that high pressure oil can enter an oil film cavity on the other side of the planetary gears through the oil passing holes. The internal gear is square, the internal gear contour line of the internal gear sleeve is formed by 6 groups of identical curves through connecting, and the number of the planetary gears is 10. The planetary gear mechanism has small size, large torque, simple structure, small internal friction and long service life.
Description
Technical field
The utility model relates to the oil hydraulic motor field, the non-circular planetary gear mechanism that uses in particularly a kind of noncircular planetary gear hydraulic motor.
Background technique
Non-circular planetary gear mechanism is by internal gear, and planetary pinion and tooth cover are formed, and planetary pinion is around internal gear revolution and time rotational, and the spatial form between the planetary pinion can the variation of generating period property with size.Utilize this characteristic, people have designed noncircular planetary gear hydraulic motor.
The noncircular planetary gear hydraulic motor rotating speed is low, output torque is big, has that low-speed running is steady, rotary inertia is little, acceleration and advantages such as period of braking weak point, compact structure, thereby in engineering equipment, obtains application more and more widely.
Like patent of invention CN 200810098077.1 " non-circular gear planetary gear system low speed high torque hydraulic motor "; Its non-circular planetary gear mechanism adopts triangle gear, cubic gear and a plurality of planetary pinion to cooperate exactly; Constitute the one group of train of gearings that can rotate continuously; Between triangle gear, cubic gear and the planetary pinion, constitute 7 airtight oil pockets.Triangle gear is connected with output shaft; Under the effect of high pressure oil, promote triangle gear and rotate, triangle gear drives planetary pinion revolution and rotation again; Make the volume of 7 airtight oil pockets of 7 seal oil chambers produce periodic the variation, oil inlet hole and oil drainage hole and airtight oil pocket communicate.Along with high pressure oil constantly gets into airtight oil pocket fixed position on the oil distribution casing, promote triangle gear and planetary pinion and rotate, noncircular planetary gear hydraulic motor also just constantly rotates, through the output shaft output torque that links to each other with triangle gear.
Since the monolateral oil-feed of oil distribution casing, and cause planet wheel and three horn rings under the thrust of high pressure oil, produce pressure to a side, make surface of contact produce friction.For addressing this problem, designed height in this patent mmi machine body, cubic gear, the back body and be press-fitted oily runner and low and be press-fitted oily runner.After high pressure oil inserted oil hydraulic motor, high pressure was distributed in triangle gear and planetary pinion both sides simultaneously, and three horn rings, planetary pinion are avoided and preceding body friction and cause oil hydraulic motor to kill damage, broke down.
Also mentioned especially in this patent and adopted the ball connection between triangle gear and the output shaft.
This motor is compared the certain longer service life of traditional noncircular planetary gear hydraulic motor, and performance is better, but also has the deficiency of following several respects.
1. owing to increased height in preceding body, cubic gear and the back body and be press-fitted oily passage and low and be press-fitted oily passage; Not only make complex structure; Be difficult to processing, and after making cubic gear perforation, still have enough intensity, must thicken the thickness of cubic gear; Not only increase the overall diameter of motor, also wasted material.
2. adopt steel ball to connect output shaft and triangle gear, when motor rotary speed improves, bear and do not live axial centrifugal force, easy deformation, even steel ball is broken, causes rotating axis locking, motor produces fault.
3. the structure processing of triangle gear needs the angle of strict guarantee 120 degree, and the necessary precision of needed process equipment is very high, could guarantee that gear matched is good.Therefore the component of this motor are very high to the requirement of process equipment.
Summary of the invention
The utility model technical problem to be solved is: the non-circular planetary gear that uses in a kind of noncircular planetary gear hydraulic motor mechanism is provided, and this planetary gears advantages of small volume, moment of torsion is big, and simple in structure, interior friction is little, long service life.
The utility model addresses the above problem the technological scheme that is adopted: a kind of non-circular planetary gear mechanism that is used for noncircular planetary gear hydraulic motor; Form by internal gear, internal tooth casing and the cooperation of a plurality of planetary pinion; Said internal gear and output shaft cooperate; The oil-feed oil distribution casing of planetary gears both sides and oil hydraulic motor, oil return oil distribution casing cooperate, and form active chamber between planetary pinion, internal gear, internal tooth casing and oil-feed oil distribution casing, the oil return oil distribution casing; Rotate with internal gear and planetary pinion; Active chamber respectively with the oil-feed oil distribution casing on oil inlet hole, the spill port on the oil return oil distribution casing be connected; It is characterized in that: have oil-through hole in the said planetary pinion, high pressure oil can get in the oil film chamber of planetary pinion opposite side through this oil-through hole.
Said internal gear is cubic gear, and the internal gear profile of said internal tooth casing is formed by connecting 6 groups of identical curves, and said planetary pinion has 10.
Said internal gear, internal tooth casing, planetary thickness are identical.
Said internal gear is connected through roller with output shaft, and the rotating direction of roller is consistent with the output shaft sense of rotation.
On the inwall of said oil-feed oil distribution casing and oil return oil distribution casing sliding bearing is installed also.
Compared with prior art, the advantage of the utility model is:
1. when oil hydraulic motor rotated, high pressure oil can enter into through the oil-through hole in the planetary pinion in the oil film chamber on oil inlet hole opposite, and the oil film chamber is positioned on the oil return oil distribution casing.Because oil return oil distribution casing and oil-feed oil distribution casing all do not rotate, so the oil film chamber can be to planetary pinion and backpressure of internal gear generation, and the high pressure in the counteracting oil inlet hole prevents the friction of planetary pinion and internal gear and oil return oil distribution casing.Motor configuration is simpler, is easy to processing.And being press-fitted oily runner with low because the inside of internal tooth casing does not have height to be press-fitted oily runner, the oil hydraulic motor volume can be littler.
2. adopt roller to replace ball, the output shaft of hydraulic pressure horse can bear bigger load, and roller bigger with area of contact oil lamella, and it is faster to dispel the heat, and the maximum (top) speed that oil hydraulic motor allowed can be higher.Cooperate sliding bearing simultaneously, friction is littler when making revolution.
3. internal gear has adopted cubic gear structure, is different from triangle gear of the prior art, and cubic gear is processed more easily.And in the disclosed structure of the utility model, working oil chamber more, and the discharge capacity of each oil pocket reduces.The high pressure oil of so same discharge capacity and pressure adopts the novel structure of this use, and effective working surface of oil pocket is more, and the moment of torsion of generation is bigger, and rotating speed is higher, and the performance of oil hydraulic motor is better.
Description of drawings
The sectional view of Fig. 1, noncircular planetary gear hydraulic motor.
Fig. 2, planetary stereogram.
A-A sectional view among Fig. 3, Fig. 1.
Fig. 4, oil hydraulic motor fundamental diagram.
Fig. 5, oil-feed oil distribution casing, the side view of oil inlet hole one side.
Fig. 6, oil return oil distribution casing, the side view of spill port one side.
Embodiment
Below in conjunction with accompanying drawing the novel embodiment of this use is further described.
Fig. 1 uses the embodiment on oil hydraulic motor for non-circular planetary gear mechanism.Noncircular planetary gear hydraulic motor comprises front cover 1, outside framework oil seal 2, packing ring 3, output shaft 4, seal washer 5, locating stud 6, planetary pinion 8, internal gear 7, internal tooth casing 9, straight pin 10, locking nut 11, side seal 12, roller 13, sliding bearing 14, oil-feed oil distribution casing 15, oil return oil distribution casing 16, fixing pin 17, motor cover 18 and housing 19.Wherein be evenly equipped with 6 oil inlet hole 15-1 on the oil-feed oil distribution casing 15, be evenly equipped with 6 spill port 15-1 on the oil return oil distribution casing 15.
Wherein internal gear 7, planetary pinion 8, internal tooth casing 9 are formed non-circular planetary gear mechanism.
The internal profile of internal tooth casing 9 is formed by 6 groups of arc transition, has tooth and planetary pinion 8 and internal gear 7 to cooperate on the inner outline.6 pin-and-hole 9-1 are arranged on the internal tooth casing 9, install and fix pin 17 after, can oil-feed oil distribution casing, oil return oil distribution casing and internal tooth casing be fixed.
The order of oil hydraulic motor assembling is from left to right, on output shaft 4, loads onto seal washer 5 earlier, and housing 19 is installed then; Dress locating stud 6 on housing; The oil-feed oil distribution casing 15 that to load onto sliding bearing 14 is then packed into, then 6 rollers 13 is contained on the output shaft 4, and planetary pinion 7 and internal tooth casing 9 are installed then; Refill planetary pinion 8; Adorn fixing pin 17 then, oil return oil distribution casing 16, motor cover 18 and front cover 1, outside framework oil seal 2, packing ring 3 are installed at last, with locking nut 11 motor cover 18 is locked at last.
Wherein straight pin 10 is fixing with side seal 12, prevents that the lubricant oil in the roller is influenced by high pressure oil.Locating stud 6 is fixed oil-feed oil distribution casing and shell, and motor cover 18 is fixing with oil return oil distribution casing 16, and oil-feed oil distribution casing 15, internal tooth casing 9 and oil return oil distribution casing 16 are fixing through fixing pin 17.
There is the in-line 15-2 in filler opening 19-1 and the oil-feed oil distribution casing to communicate on the housing 19, and is assigned to 6 oil inlet hole 15-1; Return opening 18-1 is arranged on the motor cover 18, and 6 spill port 16-1 communicate through oil circuit 16-2 and return opening 18-1.After installing, oil inlet hole 15-1 and spill port 16-1 angle differ 30 degree.
As shown in Figure 3; Noncircular planetary gear hydraulic motor has 10 active chambers; Any time all has 4 active chambers to connect oil inlet hole, and 4 active chambers are connected spill port; 2 neither also not oil returns of oil-feed of active chamber (promptly oil inlet hole or spill port are stopped by planetary pinion under this state, are in to set up the high pressure oil film or discharge the high pressure oil membrane stage).In conjunction with Fig. 1, shown in Figure 4, high pressure oil gets into active chamber D from filler opening 18-1 through in-line 15-2, oil inlet hole 15-1.Because the left side of active chamber D is the sealing of planetary tooth root portion, perpendicular distance is L1, and the right is planetary caps sealing, and perpendicular distance is L2.Obviously L2 is greater than L1, and under the effect of same high oil pressure pressure, thrust to the right is greater than left thrust, so planetary pinion 8 drives internal gears 7 and rotates along clockwise direction.And then internal gear drives output shaft 4 rotations; When active chamber D and spill port 16-1 connection, oil pressure reduces rapidly, finally discharges through return opening 18-1.
As shown in Figure 1, because filler opening is distributed in planetary left side, return opening is distributed in planetary right side; So when planetary pinion passes through oil inlet hole 15-1; Can produce a pressure to the right to planetary pinion, thus 8 designed oil-through hole 8-1 on the planetary pinion, when planetary pinion during through oil inlet hole 15-1; High pressure oil enters the oil film chamber on oil return oil distribution casing surface rapidly through oil-through hole 8-1, between planetary pinion and oil return oil distribution casing, set up the high pressure oil film of a thickness less than 1mm.This high pressure oil film not only can play lubricated effect, can also produce left a thrust to planetary pinion, and the high pressure oil of offsetting in-line reduces the frictional force between planetary pinion and the oil return oil distribution casing to planetary pinion pressure left.When planetary pinion when the spill port 16-1, this high pressure oil film can be taken away the inner heat of oil hydraulic motor from spill port 16-1 pressure release, prevents between oil return oil distribution casing 16 and the planetary pinion 8 that friction is overheated and burns out.
The rotating speed of noncircular planetary gear hydraulic motor is changed by oil pressure and load influences jointly, and be used for internal gear installed inside sliding bearing and roller bearing structure can have good compressive strength again both having guaranteed low friction.Simultaneously, structural designs such as planetary oil-through hole, high pressure oil film improve the heat dispersion of oil hydraulic motor, make motor satisfy requirement low, middling speed.This oil hydraulic motor has the more work chamber, and starting torque is bigger, and efficient is higher.
Owing to oil-feed and the oil return employing design of symmetry fully, therefore when high low oil pressure exchanged, noncircular planetary gear hydraulic motor also can rotate counterclockwise, and adaptive capacity is strong.
Claims (5)
1. non-circular planetary gear mechanism that is used for noncircular planetary gear hydraulic motor; Form by internal gear (7), internal tooth casing (9) and a plurality of planetary pinion (8) cooperation; Said internal gear (7) and output shaft (4) cooperate; The oil-feed oil distribution casing (15) of planetary gears both sides and oil hydraulic motor, oil return oil distribution casing (16) cooperate, and it is characterized in that: have oil-through hole in the said planetary pinion, high pressure oil can get in the oil film chamber of planetary pinion opposite side through this oil-through hole.
2. noncircular planetary gear hydraulic motor according to claim 1 is characterized in that: said internal gear (7) is cubic gear, and the internal gear profile of said internal tooth casing is formed by connecting 6 sets of curves, and said planetary pinion (8) has 10.
3. noncircular planetary gear hydraulic motor according to claim 1 is characterized in that: the thickness of said internal gear (7), internal tooth casing (9), planetary pinion (8) is identical.
4. noncircular planetary gear hydraulic motor according to claim 1 is characterized in that: said internal gear (7) is connected through roller with output shaft (4), and the rotating direction of roller is consistent with the output shaft sense of rotation.
5. noncircular planetary gear hydraulic motor according to claim 1 is characterized in that: on the inwall of said oil-feed oil distribution casing (15) and oil return oil distribution casing (16) sliding bearing is installed also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120557958 CN202402575U (en) | 2011-12-28 | 2011-12-28 | Non-circular planetary gear mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120557958 CN202402575U (en) | 2011-12-28 | 2011-12-28 | Non-circular planetary gear mechanism |
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| Publication Number | Publication Date |
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| CN202402575U true CN202402575U (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120557958 Expired - Lifetime CN202402575U (en) | 2011-12-28 | 2011-12-28 | Non-circular planetary gear mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389734A (en) * | 2014-09-18 | 2015-03-04 | 武汉理工大学 | Outer rotor noncircular bevel gear hydraulic motor |
| CN106015466A (en) * | 2016-07-16 | 2016-10-12 | 梁庆昌 | Drive mechanism of cylindrical gear and non-cylindrical gear |
| WO2019147148A1 (en) * | 2018-01-24 | 2019-08-01 | Politechnika Gdańska | Satellite hydraulic motor |
| CN111760358A (en) * | 2020-04-03 | 2020-10-13 | 上海果瑞环境工程有限公司 | Sewage treatment equipment capable of automatically replacing filter screen |
| EP4191020A1 (en) * | 2021-12-01 | 2023-06-07 | Politechnika Gdanska | Satellite pump |
-
2011
- 2011-12-28 CN CN 201120557958 patent/CN202402575U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389734A (en) * | 2014-09-18 | 2015-03-04 | 武汉理工大学 | Outer rotor noncircular bevel gear hydraulic motor |
| CN106015466A (en) * | 2016-07-16 | 2016-10-12 | 梁庆昌 | Drive mechanism of cylindrical gear and non-cylindrical gear |
| CN106015466B (en) * | 2016-07-16 | 2017-12-12 | 梁庆昌 | A kind of transmission mechanism of roller gear and not rounded stud wheel |
| WO2019147148A1 (en) * | 2018-01-24 | 2019-08-01 | Politechnika Gdańska | Satellite hydraulic motor |
| CN111760358A (en) * | 2020-04-03 | 2020-10-13 | 上海果瑞环境工程有限公司 | Sewage treatment equipment capable of automatically replacing filter screen |
| CN111760358B (en) * | 2020-04-03 | 2022-01-28 | 上海果瑞环境工程有限公司 | Sewage treatment equipment capable of automatically replacing filter screen |
| EP4191020A1 (en) * | 2021-12-01 | 2023-06-07 | Politechnika Gdanska | Satellite pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315207, 1, 1818 East Luo Lu, Zhenhai Town, Zhenhai District, Zhejiang, Ningbo Patentee after: NINGBO HENGTONG NUODA HYDRAULIC CO., LTD. Address before: 10, 3, 1177, Lingyun Road, 315103 hi tech Zone, Ningbo, Zhejiang, Ningbo Patentee before: Ningbo Helm Tower Hydraulic Motor Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |