CN104373558A - Small tooth difference speed reducer with zinc base alloy bearing supporting output shaft - Google Patents
Small tooth difference speed reducer with zinc base alloy bearing supporting output shaft Download PDFInfo
- Publication number
- CN104373558A CN104373558A CN201410396915.9A CN201410396915A CN104373558A CN 104373558 A CN104373558 A CN 104373558A CN 201410396915 A CN201410396915 A CN 201410396915A CN 104373558 A CN104373558 A CN 104373558A
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- Prior art keywords
- bearing
- output shaft
- base alloy
- zinc base
- ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to a small tooth difference speed reducer with a zinc base alloy bearing supporting an output shaft. The small tooth difference speed reducer comprises a box body, a transmission component and an output component. The small tooth difference speed reducer is characterized in that a bearing is used for supporting an input shaft in an inner hole of a hub of a round end cover connected with the input end of the box body; the transmission component comprises planet gears, an inner gear ring and an eccentric bearing, and the inner gear ring is fastened to an inner hole in the input end of the box body; the output component comprises the output shaft, pins and a load balance ring; a wear-resisting ring arranged on the output shaft is supported in the zinc base alloy bearing, and the zinc base alloy bearing is connected in the output end of the box body; a sponge with the section in a T shape is arranged in the output shaft, an inner hole of the load balance ring is connected with the zinc base alloy bearing, and the zinc base alloy bearing is supported on a second wear-resisting ring which is arranged on the outer circle of the hub. The small tooth difference speed reducer with the zinc base alloy bearing supporting the output shaft has the advantages that the price of the zinc base alloy bearing can be can be 60-80% lower; the small tooth difference speed reducer is stable in working, free of noise, small in radial size, high in impact resistance and bearing capacity, long in service life, simple in structure, convenient to demount and mount, good in impact resistance and vibration absorption performance and capable of saving bearing steel.
Description
[technical field]
The present invention relates to the improvement of K-V-H mechanism (N-type) few teeth difference technology in universal planetary technical field, be specifically related to the improvement of little tooth difference speed reducer output shaft block bearing, a kind of little tooth difference speed reducer of zinc base alloy bearing supporting output shaft.
[background technique]
Universal planetary transmission comprises 2K-H negative mechanisms (NGW type) and the large class of K-V-H mechanism (N-type) two, and K-V-H mechanism (N-type) comprises cycloid and involute.The output shaft of existing universal planetary transmission all adopts rolling bearing to support, and comparatively sliding bearing is high a lot of for the price of rolling bearing, especially high-power, high pulling torque type.
Research finds, universal planetary transmission output shaft can adopt sliding supported condition, as long as ensure that there is enough, clean lubricant oil in sliding supported condition face, this is that " bearing due to (planetary reducer) output shaft does not bear radial working load (only bearing the deadweight of output planetary rack device), and thus bearing size is only determined by structural requirement." (" design and manufaction of Planetary Involute Gear " chapter 12 calculated examples)
Output shaft is if use sliding supported condition instead, and its Advantageous Effects is that bearing price can save 60-80%:
Through looking into, what above-mentioned calculated example was selected is the light ball bearing 9707/780 of single-row spy, and two bearings amounts to heavy 624kg, valency 44450 yuan.As changed casting Zine containing alloy sliding bearing into, weight about can alleviate 500kg, save nearly 40,000 yuan.
The advantage of casting Zine containing alloy sliding bearing is:
1, good casting property, foundry goods is fine and close, and the little heat conductivity of friction factor is higher, and finish turning surface roughness can reach 1.6;
2, weight ratio copper is light by 40%, and cost is lower than tin bronze by more than 40%;
3, working life is tin bronze 2 ~ 3 times, has self-lubricating property and shock-absorbing function, is applicable to middle low-speed heave-load occasion;
4, have nonmagnetic, no-spark performance, in inflammable and explosive dangerous situation safety.
[summary of the invention]
Aeroplane engine main bearing can adopt sliding bearing, speed reducer be assorted petty can not?
The object of the invention is, the rolling bearing providing zinc base alloy bearing to replace existing little tooth difference speed reducer output shaft to adopt, a kind of little tooth difference speed reducer of zinc base alloy bearing supporting output shaft.
The theoretical foundation that sliding bearing can replace rolling bearing is as follows:
" plain bearing structure is simple, easily manufactured, bearing capacity large, but high stability is poor, easy bad student's oil whip." (Wang Wenbin " mechanical design handbook " rolls up 3.21-4 page)
" in normal state, sliding bearing abrasion rate is very low, and the swarf particles of formation is small-sized, and quantity is also few." (Bu Yan " practical bearing technology handbook " 492 pages)
" aeroplane engine main bearing adopts general sliding bearing; parameter: specific pressure allowable [p]=12-22 (MPa); linear velocity allowable [v]=8-10 (m/s), [pv] allowable value≤80 (MPa) (m/s)." (Bu Yan " practical bearing technology handbook " 349 pages)
" casting Zine containing alloy be applicable in, low speed (≤7-10m/s), heavy duty (25-30MPa), the bearing that works under (allowable contact stress σ=550MPa) condition." (6 pages, Cheng great Xian " mechanical design handbook " bearing)
The key of technical solution of the present invention is: ensure that there are enough clear gusolines in zinc base alloy sliding supported condition face." outer fork-like farm tool used in ancient China particle totally, is not had to be the major reason that sliding bearing lost efficacy." (" mechanical design handbook " rolls up 4.27-227 page)
Described casing input end face connects nose circle lid, and described nose circle lid endoporus connects wheel hub, and described wheelboss inner hole bearing supports input shaft, and described nose circle lid input end face connects small end cover;
Further, described transmission part comprises two phase differences 180 ° of planet wheels, ring gears and is located at input shaft axle stretch end capacity eccentric bearing, and described ring gear is fastened on casing input end endoporus, makes active force directly point to casing footing and can not produce tilting moment;
Again further, described pin axle type output block comprises output shaft, pin and all carries ring, and described pin two ends connect output shaft disk respectively and all carry ring and form cage output shaft;
Described output axle journal tightens joins the first wear-resisting ring, and the first wear-resisting ring is bearing in the first zinc-base sliding bearing, and the first zinc-base sliding bearing is fastened on casing output terminal endoporus;
" cylinder-disc type " polyester oil suction sponge of " T " word section is provided with in described output shaft, cylindrical end and output shaft axis hole form a shoe cream room Q, described shoe cream room Q lubricant oil flows into alloy bearing and wear-resisting ring gap from output shaft aperture, and disk end is located at radial hole uniform with disc circumference on output shaft disk end face and communicates;
The described ring endoporus that all carries connects the second zinc base alloy bearing, and described second zinc base alloy bearing is bearing on the second wear-resisting ring, and described second wear-resisting ring is located at nose circle lid wheel hub cylindrical.
[technique effect]
Although each independent technical characteristics of the present invention is completely known, support each other, and can following Advantageous Effects be produced:
(1) zinc base alloy bearing ratio with internal diameter rolling bearing, price can reduce 60-80%, and the larger effect of internal diameter is more remarkable;
(2) zinc base alloy sliding bearing stable working, noise free, radial dimension is little, bearing capacity is large;
(3) sliding bearing abrasion rate is the advantages such as very low, long service life is that rolling bearing is irreplaceable;
(4) structure simple, manufacture, processing, easy accessibility; There is good shock-resistant and good absorbing performance;
(5) can save Bearing Steel 60-80%, old zinc base alloy sliding bearing is recyclable to be cast again.
[accompanying drawing explanation]
Fig. 1. embodiment of the present invention structural representation
[embodiment]
Below in conjunction with accompanying drawing, the present invention is encyclopaedized:
With reference to Fig. 1. a kind of little tooth difference speed reducer of zinc base alloy bearing supporting output shaft, comprises casing 1 and the transmission part be arranged in casing 1 and pin axle type output block, it is characterized in that:
Described casing 1 input end face connects nose circle lid 17, and described nose circle lid 17 endoporus connects wheel hub 13, and described wheel hub 13 endoporus bearing 10 supports input shaft 12, and described nose circle lid 17 input end face connects small end cover 11;
Described transmission part comprises two planet wheels 6 of phase difference 180 °, ring gear 7 and is located at the capacity eccentric bearing 9 of input shaft 12 axle stretch end, and described ring gear 7 is fastened on the input end endoporus of casing 1, makes active force directly point to casing footing and can not produce tilting moment;
Described pin axle type output block comprises output shaft 4,6-12 only uniform pin 8 and all carry ring 16, and described pin 8 two ends connect output shaft 4 disk respectively and all carry ring 16 and form cage output shaft, wherein:
Described output shaft 4 axle journal is provided with the first wear-resisting ring 2, and described first wear-resisting ring 2 is bearing in the first zinc base alloy bearing 5, and described first zinc base alloy bearing 5 is connected to casing 1 output terminal endoporus;
" cylinder-disc type " polyester oil suction sponge 3 of " T " word section is provided with in described output shaft 4, cylindrical end and output shaft 4 axis hole form a shoe cream room Q, described shoe cream room Q lubricant oil flows into alloy bearing and wear-resisting ring gap from output shaft 4 aperture, and disk end is located at the radial hole uniform with disc circumference on output shaft 4 disk end face and communicates, polyester oil suction sponge has excellent mechanical strength: wear-resisting, wear-corrosion resistance, high temperature resistant, stretchability strong, the oil resistant of good springiness and uniqueness is anti-aging, the characteristic of solvent resistant.After casing oil sump lubricant oil is sucked by " cylinder-disc type " polyester oil suction sponge filter core, the oil that its column part stores relies on gravity constantly to drip, accumulate in shoe cream room Q, the rubbing surface between sliding bearing and wear-resisting ring is entered by oilhole little on output shaft, lubricant oil in a steady stream Fill fills, and guarantees that rubbing surface has very long working life;
Described ring 16 endoporus that all carries connects the second zinc base alloy bearing 15, described second zinc base alloy bearing 15 is bearing on the second wear-resisting ring 14, described second wear-resisting ring 14 is located on the cylindrical of wheel hub 13, the maximum outside diameter of described wheel hub 13 is less than the external diameter of the second wear-resisting ring 14, its role is to assemble smoothly all carry ring 16.
Pin axle type output block both sides zinc-base sliding supported condition, advantage is that to change traditional cantilever be freely supported structure.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (1)
1. a little tooth difference speed reducer for zinc base alloy bearing supporting output shaft, comprises casing (1) and the transmission part be arranged in casing (1) and pin axle type output block, it is characterized in that:
Described casing (1) input end face connects nose circle lid (17), described nose circle lid (17) endoporus connects wheel hub (13), described wheel hub (13) endoporus bearing (10) supporting input shaft (12), described nose circle lid (17) input end face connects small end cover (11);
Described transmission part comprises two planet wheels (6) of phase difference 180 °, ring gear (7) and is located at the capacity eccentric bearing (9) of input shaft (12) axle stretch end, and described ring gear (7) is fastened on the input end endoporus of casing (1);
Described pin axle type output block comprises output shaft (4), 6-12 only uniform pin (8) and all carry ring (16), described pin (8) two ends connect output shaft (4) disk respectively and all carry ring (16) and form cage output shaft, wherein:
Described output shaft (4) axle journal is provided with the first wear-resisting ring (2), described first wear-resisting ring (2) is bearing in the first zinc base alloy bearing (5), and described first zinc base alloy bearing (5) is connected to casing (1) output terminal endoporus;
" cylinder-disc type " polyester oil suction sponge (3) of " T " word section is provided with in output shaft (4), cylindrical end and output shaft (4) axis hole form a shoe cream room (Q), described shoe cream room (Q) lubricant oil flows into alloy bearing and wear-resisting ring gap from output shaft (4) aperture, and disk end is located at radial hole uniform with disc circumference on output shaft (4) disk end face and communicates;
Described ring (16) endoporus that all carries connects the second zinc base alloy bearing (15), described zinc base alloy bearing (15) is bearing on the second wear-resisting ring (14), described second wear-resisting ring (14) is located on the cylindrical of wheel hub (13), and the maximum outside diameter of described wheel hub (13) is less than the external diameter of the second wear-resisting ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410396915.9A CN104373558A (en) | 2014-08-06 | 2014-08-06 | Small tooth difference speed reducer with zinc base alloy bearing supporting output shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410396915.9A CN104373558A (en) | 2014-08-06 | 2014-08-06 | Small tooth difference speed reducer with zinc base alloy bearing supporting output shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104373558A true CN104373558A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410396915.9A Pending CN104373558A (en) | 2014-08-06 | 2014-08-06 | Small tooth difference speed reducer with zinc base alloy bearing supporting output shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747658A (en) * | 2015-03-06 | 2015-07-01 | 吴小杰 | Zero-return-difference involute small-tooth-difference reduction box |
| CN109114200A (en) * | 2018-10-25 | 2019-01-01 | 山东柳杭减速机有限公司 | Big registration internal messing Gear Planet Transmission speed reducer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2751264A (en) * | 1954-01-21 | 1956-06-19 | Gen Electric | Self-lubricating journal pin |
| CN86102085A (en) * | 1986-03-26 | 1988-07-20 | 方祖彭 | Small tooth difference planetary reducer series |
| JPH11221736A (en) * | 1998-02-10 | 1999-08-17 | Nikken Kosakusho Works Ltd | High-speed rotation tool holder |
| CN102889341A (en) * | 2011-07-17 | 2013-01-23 | 吴小杰 | Large star wheel gear box |
| CN103291846A (en) * | 2012-02-22 | 2013-09-11 | 周晓汀 | Small tooth difference planetary transmission device adopting pin hole output and provided with adjustable clearance |
-
2014
- 2014-08-06 CN CN201410396915.9A patent/CN104373558A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2751264A (en) * | 1954-01-21 | 1956-06-19 | Gen Electric | Self-lubricating journal pin |
| CN86102085A (en) * | 1986-03-26 | 1988-07-20 | 方祖彭 | Small tooth difference planetary reducer series |
| JPH11221736A (en) * | 1998-02-10 | 1999-08-17 | Nikken Kosakusho Works Ltd | High-speed rotation tool holder |
| CN102889341A (en) * | 2011-07-17 | 2013-01-23 | 吴小杰 | Large star wheel gear box |
| CN103291846A (en) * | 2012-02-22 | 2013-09-11 | 周晓汀 | Small tooth difference planetary transmission device adopting pin hole output and provided with adjustable clearance |
Non-Patent Citations (1)
| Title |
|---|
| 无: "AF-90高强度减磨锌基合金——一种降低滑动轴承类产品成本的新材料", 《铸造设备研究》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747658A (en) * | 2015-03-06 | 2015-07-01 | 吴小杰 | Zero-return-difference involute small-tooth-difference reduction box |
| CN109114200A (en) * | 2018-10-25 | 2019-01-01 | 山东柳杭减速机有限公司 | Big registration internal messing Gear Planet Transmission speed reducer |
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Application publication date: 20150225 |
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