CN102287487A - Planetary transmission device with high reliability and no bearing - Google Patents
Planetary transmission device with high reliability and no bearing Download PDFInfo
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- CN102287487A CN102287487A CN2011102313257A CN201110231325A CN102287487A CN 102287487 A CN102287487 A CN 102287487A CN 2011102313257 A CN2011102313257 A CN 2011102313257A CN 201110231325 A CN201110231325 A CN 201110231325A CN 102287487 A CN102287487 A CN 102287487A
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Abstract
The invention belongs to the technical field of planetary transmission, particularly relating to a planetary transmission device with high reliability and no bearing. According to the invention, the problems that the existing planetary transmission device uses a bearing to support a planetary shaft, which can not meet the strength requirement of each component within the space dimension limitation, can be solved. The planetary transmission device with high reliability and no bearing comprises a sun gear, wherein the exterior of the sun gear is provided with a plurality of planetary gears and planetary shafts matched the planetary gears, the sun gear is meshed and connected with the planetary gears, the planetary gears are meshed and connected with inner gear rings, the planetary gears are directly installed on the planetary shafts without bearings, the planetary shafts are fixedly connected in a planetary carrier, and the planetary shafts are made of high-strength wear-resistant copper base alloy. The invention has the following beneficial effects: planetary gear holes are directly coordinated with the planetary shafts; each planetary shaft has the functions of a shaft and a bearing, thus the planetary transmission device is not only small in size, but also have high strength.
Description
Technical field
The invention belongs to the technical field of planetary pinion transmission, being specifically related to a kind of high reliability does not have the bearing planetary driving device.
Background technique
Traditional planetary driving device generally adopts duplex bearing to support planet axis, bearing or place in the planet wheel, or place planet carrier, bearing unavoidably will take the radial dimension in the confined space, arrange that in the confined space bearing just need reduce planet axis diameter or planet wheel, planet carrier outer wall wall thickness, under the certain space size restrictions, be difficult to satisfy simultaneously planet wheel or planet carrier, planet axis intensity and bearing life requirement.
Summary of the invention
The present invention adopts the bearings planet axis in order to solve existing planetary driving device, under the bulk restriction, is difficult to satisfy the problem of the requirement of strength of each member, provides a kind of high reliability not have the bearing planetary driving device.
The present invention adopts following technological scheme to realize:
High reliability does not have the bearing planetary driving device, comprise sun gear, sun gear outer installment several rows star-wheel and with the supporting planet axis of planet wheel, sun gear connects with the planet wheel engagement, planet wheel connects with the ring gear engagement, it is characterized in that planet wheel does not have bearing and directly is installed on the planet axis, planet axis is fixedly connected in the planet carrier, and described planet axis material is the high-strength wearable copper base alloy.
Planet wheel and planet axis Spielpassung, planet wheel are evenly equipped with some oilholes along the circumferential direction, each oilhole is positioned at planetary gear root position, and a side has and opens the formula oil duct on the planet axis, and the opposite side of symmetry has closed oil duct.
The planet wheel upper and lower settings has the spacer ring of spacing usefulness.Between planet carrier and the planet axis flat key is housed.The ring gear arm is established in the ring gear outside, has locating slot on the ring gear arm.
The present invention adopts new planet axis material, the planet wheel hole directly cooperates with planet axis, planet axis and planet carrier are fixed, no bearings, planet wheel is relative with planet axis to be rotated, and planet axis has the function of axle and bearing concurrently, changed the needle bearing that relies on sliding bearing or remove inside and outside circle, the diameter that increases planet axis improves the conventional thought of planet axis intensity, effectively reduces the Gear Planet Transmission volume, improves the Gear Planet Transmission power to volume ratio.
The relative prior art of the present invention has following beneficial effect: the planet wheel hole directly cooperates with planet axis, and planet axis has the function of axle and bearing concurrently, can guarantee that volume is little, can guarantee high strength again.Along with the continuous increase of Modern coal mines mechanical output volume ratio, adopting this Gear Planet Transmission structure is the effective way that solves the minor diameter planetary type gear transmission unit, is with a wide range of applications.
Description of drawings
Fig. 1 is no bearing planetary driving device structural front view
Fig. 2 is no bearing planetary driving device structure plan view
Fig. 3 is no bearing planetary driving device structure side view
Fig. 4 is the A-A view of Fig. 1
Fig. 5 is the structural drawing of planet wheel
Fig. 6 is the A-A sectional drawing of Fig. 5
Fig. 7 is the planet axis structural drawing
Fig. 8 is that the A of Fig. 7 is to view
Fig. 9 is that the B of Fig. 8 is to view
Among the figure: 1-ring gear, 2-spacer ring I, 3-floating seal I, 4-sprocket wheel I, 5-flat key, 6-planet axis, the 7-planet wheel, 8-bearing I, 9-is apart from the cover I, 10-double-screw bolt I, 11-nut I, 12-packing ring I, the locking baffle plate of 13-, 14-driving pin I, 15-auxiliary hole, the 16-locating slot, 17-ring gear arm, 18-planet carrier, 19-driving pin II, 20-double-screw bolt II, 21-nut II, 22-packing ring II, 23-sun wheel shaft, 24-bearing II, 25-sprocket wheel II, 26-is apart from cover II, 27-floating seal II, 28-spacer ring II, the 29-sun gear.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.Embodiment is that sprocket wheel is an example to be driven part.
Shown in Fig. 1,2,3, be overall structure figure of the present invention, 5 planet wheels 7, the planet axis 6 that odd number is provided with is equipped with in sun gear 23 outsides, planet wheel 7 is installed on the planet axis 6, planet wheel 7, planet axis 6 are installed in the planet carrier 18, and planet carrier 18 is by driving pin I 14, driving pin II 19, double-screw bolt I 10, double-screw bolt II 20, nut I 11, nut II 21, packing ring I 12, packing ring II 22 are connected with sprocket wheel I 4, sprocket wheel II 25; Ring gear 1 right outside is ring gear arm 17, auxiliary hole 15, locating slot 16, and locating slot 16 makes ring gear 1 fixing, and sprocket wheel I 4, sprocket wheel II 25 are fixed on the wheel hub of frame by bearing I 8, bearing II 24; Between sprocket wheel 4 and the ring gear 1 floating seal I 3 is arranged, between ring gear 1 and the sprocket wheel II 25 floating seal II 27 is arranged, spacer ring I 2 is equipped with in planet wheel 7 top and the bottom, spacer ring II 28 is spacing, between planet carrier 18 and 5 planet axis 6 flat key 5 is housed, prevent planet axis 6 rotations, distance cover I 9 is housed between bearing I 8 and the planet carrier 18, distance cover II 26 is housed between bearing II 24 and the planet carrier 18, spacing.Locking baffle plate 13 is welded on sprocket wheel I 4, the sprocket wheel II 25, prevents that nut I 11, nut II 21 is loosening.
Shown in Figure 4, the inner transmission joint graph of a relation of no bearing planetary driving device, sun gear 23 connects with planet wheel 7 engagements, and sun gear 23 drives planet wheel 7, and planet wheel 7 connects with ring gear 1 engagement; Ring gear 1 right outside is ring gear arm 17 Design Orientation grooves 16, locating slot 16 makes ring gear 1 fixing, planet wheel 7 is installed on the planet axis 6, planet axis 6 drives planet carrier 18, planet carrier 18 is by driving pin I 14, driving pin II 19 driving sprocket wheel I 4, sprocket wheel II 25, sprocket wheel I 4, sprocket wheel II 25 connect the track link of creeper undercarriage, driving track chain.
The material of planet axis 6 is high-strength wearable copper base alloy (" non-ferrous metal ", the 54th volume, the second phase, " research of high-strength copper-based alloy material and application present situation "), has the characteristic of high strength, high wear resistance.
Guarantee no bearing Gear Planet Transmission reliability of structure, just need to guarantee that planet wheel 7 is a fluid lubrication between planet axis 6.Planet wheel 7 is evenly equipped with some oilholes along the circumferential direction, oilhole is generally offered three, and oilhole is positioned at planetary gear root position, and a side has and opens the formula oil duct on the planet axis 6, and the opposite side of symmetry has closed oil duct.The formula oil duct of opening can enter between planet axis and the planet wheel lubricant oil, and closed oil duct plays the effect that stores lubricant oil, guarantees unlubricated dead angle.In addition, planet wheel 7 and planet axis 6 Spielpassung with reference to the matching gap of sliding bearing with axle, should guarantee both quality of fits, can form oil film when guaranteeing the surface of contact relative movement again, utilize the principle of hydrodynamic, relying on changes the planet axis self speed, the fluid of certain viscosity is brought in the gap of planet axis and planet wheel, generate dynamic pressure oil film, planet axis and planet wheel are isolated, and it is lubricated to form stable Hydrodynamic, bears load to reach, reduces the purpose that rubs, slows down wearing and tearing.
Planet axis 6 is fixing with planet carrier 19, no bearings, planet wheel 7 and planet axis 6 relative rotations.Planet axis 6 has the function of axle and bearing concurrently, can guarantee that volume is little, the requirement that intensity is high.Sun wheel shaft 23, ring gear 1, planet wheel 7 will be made of the good Alloy Constructional Steel of intensity, the flank of tooth processing of hardening, and profile of tooth grinds to good.
Claims (5)
1. a high reliability does not have the bearing planetary driving device, comprise sun gear (29), sun gear (29) outer installment several rows star-wheels (7) and with the supporting planet axis (6) of planet wheel (7), sun gear (29) connects with planet wheel (7) engagement, planet wheel (7) connects with ring gear (1) engagement, it is characterized in that the no bearing of planet wheel (7) directly is installed on the planet axis (6), planet axis (6) is fixedly connected in the planet carrier (18), and described planet axis (6) material is the high-strength wearable copper base alloy.
2. high reliability according to claim 1 does not have the bearing planetary driving device, it is characterized in that planet wheel (7) and planet axis (6) Spielpassung, planet wheel (7) is evenly equipped with some oilholes along the circumferential direction, each oilhole is positioned at planetary gear root position, the last side of planet axis (6) has opens the formula oil duct, and the opposite side of symmetry has closed oil duct.
3. high reliability according to claim 1 and 2 does not have the bearing planetary driving device, it is characterized in that planet wheel (7) upper and lower settings has the spacer ring of spacing usefulness.
4. high reliability according to claim 3 does not have the bearing planetary driving device, it is characterized in that between planet carrier (18) and the planet axis (6) flat key (5) being housed.
5. high reliability according to claim 4 does not have the bearing planetary driving device, it is characterized in that ring gear (1) outside establishes ring gear arm (17), has locating slot (16) on the ring gear arm (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102313257A CN102287487A (en) | 2011-08-12 | 2011-08-12 | Planetary transmission device with high reliability and no bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102313257A CN102287487A (en) | 2011-08-12 | 2011-08-12 | Planetary transmission device with high reliability and no bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287487A true CN102287487A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102313257A Pending CN102287487A (en) | 2011-08-12 | 2011-08-12 | Planetary transmission device with high reliability and no bearing |
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| CN (1) | CN102287487A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896502A (en) * | 2012-10-08 | 2013-01-30 | 武汉贝格泰克数控直驱机械有限公司 | Bearingless direct-driven rotating platform |
| CN104006117A (en) * | 2014-05-26 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Vertical planetary mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4674360A (en) * | 1983-08-16 | 1987-06-23 | Matex Co., Ltd. | Planetary transmission with axial thrust protection means |
| CN87207630U (en) * | 1987-05-06 | 1988-04-20 | 龚振鑫 | Large speed ratio planetary speed reducer free from planetary bearings |
| CN2449002Y (en) * | 2000-10-27 | 2001-09-19 | 王俊法 | Zero side gap planetary gear transmission mechanism |
| CN1982746A (en) * | 2005-12-13 | 2007-06-20 | 财团法人工业技术研究院 | Secondary planetary gear reducing mechanism |
| CN101539196A (en) * | 2009-04-13 | 2009-09-23 | 江苏泰隆减速机股份有限公司 | Automatic power type lubricant passage way system for transmission of satellite gears |
| CN201666356U (en) * | 2010-03-31 | 2010-12-08 | 南京高速齿轮制造有限公司 | Lubricating arrangement for planetary gear |
| CN102042369A (en) * | 2010-12-28 | 2011-05-04 | 上海合纵重工机械有限公司 | Improved planetary reducer |
-
2011
- 2011-08-12 CN CN2011102313257A patent/CN102287487A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4674360A (en) * | 1983-08-16 | 1987-06-23 | Matex Co., Ltd. | Planetary transmission with axial thrust protection means |
| CN87207630U (en) * | 1987-05-06 | 1988-04-20 | 龚振鑫 | Large speed ratio planetary speed reducer free from planetary bearings |
| CN2449002Y (en) * | 2000-10-27 | 2001-09-19 | 王俊法 | Zero side gap planetary gear transmission mechanism |
| CN1982746A (en) * | 2005-12-13 | 2007-06-20 | 财团法人工业技术研究院 | Secondary planetary gear reducing mechanism |
| CN101539196A (en) * | 2009-04-13 | 2009-09-23 | 江苏泰隆减速机股份有限公司 | Automatic power type lubricant passage way system for transmission of satellite gears |
| CN201666356U (en) * | 2010-03-31 | 2010-12-08 | 南京高速齿轮制造有限公司 | Lubricating arrangement for planetary gear |
| CN102042369A (en) * | 2010-12-28 | 2011-05-04 | 上海合纵重工机械有限公司 | Improved planetary reducer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896502A (en) * | 2012-10-08 | 2013-01-30 | 武汉贝格泰克数控直驱机械有限公司 | Bearingless direct-driven rotating platform |
| CN102896502B (en) * | 2012-10-08 | 2016-02-10 | 武汉贝格泰克数控直驱机械有限公司 | A kind of bearing-free directly turns platform |
| CN104006117A (en) * | 2014-05-26 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Vertical planetary mechanism |
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Application publication date: 20111221 |