CN102889342A

CN102889342A - Novel pinwheel output cycloid speed reducer

Info

Publication number: CN102889342A
Application number: CN2011102085602A
Authority: CN
Inventors: 吴声震
Original assignee: 吴小杰
Current assignee: Jiangsu Tailong Decelerator Machinery Co Ltd
Priority date: 2011-07-17
Filing date: 2011-07-17
Publication date: 2013-01-23
Anticipated expiration: 2031-07-17
Also published as: CN102889342B

Abstract

The invention relates to the technical field of cycloid speed reduction and provides a novel pinwheel output cycloid speed reducer. The novel pinwheel output cycloid speed reducer comprises a machine body, an input part and an output part which are arranged in the machine body, wherein the input part comprises an input shaft, an eccentric bearing and cycloid wheel components; the output part comprises an output shaft and a pinwheel; the novel pinwheel output cycloid speed reducer is characterized in that each cycloid wheel in the cycloid wheel components is formed by assembling a cast iron wheel spoke and a bearing steel wheel ring; an abrasion-resisting ring is arranged in a pin hole on the cast iron wheel spoke; a column sleeve and the cycloid wheels are same in thickness; a uniform loading plate is arranged between the cycloid wheels; the eccentric bearing comprises two back-to-back single-row tapered roller bearings and an eccentric sleeve; a radial clearance of the eccentric bearing is approximate to zero so as to eliminate the vibration; the pinwheel comprises a pin and a pin wheel housing; the pin wheel housing is linked with an output shaft disc; and when two sets and four pieces of cycloid wheel components are arranged, the bearing capacity is doubled. The novel pinwheel output cycloid speed reducer has the beneficial effects: the bearing capacity is high and the maximal torque T2 is equal to 600kNm; the manufacturing cost is reduced by 35-55%; and during a running process, the inertia force and the inertia moment are theoretically and completely balanced and the noise is low.

Description

Novel pinwheel output cycloidal reducer

Technical field the present invention relates to the cycloid reduction technical field, a kind of novel pinwheel output cycloidal reducer.

The professor of background technique Dalian University Of Communications innovation " pinwheel output pin swing planetary transmission speed reducer " (ZL200820218490.2) has proposed a kind of " pinwheel output pin swing planetary transmission speed reducer that bearing capacity is high, transmission efficiency is high, cost performance is high ", according to " China Construction Machinery " 2010.10 reports, this model utility is listed in national natural science fund subsidy project in 2009 in addition.

Research is found, there is following problems in this model utility: (A) pinwheel causes the complete machine cost too high in casing with needle roller bearing support, because the needle bearing internal diameter of this moment is slightly larger than center diameter of gear pins, take X3 type cycloidal reducer as example: Dz=140,555 yuan of unit prices, as adopt this model utility pinwheel output, and through looking into: 864 yuan of needle bearing NA4928 (140 * 190 * 50) unit prices, a needle bearing cost is higher than the complete machine valency; B) traditional freely-supported needle pin structure, thereby low bearing capacity.

The two large factors that studies show that restriction cycloid bearing capacity are: (one) whole cycloid wheel pin-and-hole grinding: touch stress σ according to pin-toe joint _Jmax=(8914/Rz) (Ymax T ₂/ b) ^0.5, bearing capacity T ₂Dz is directly proportional with centre circle of gear pins, and the domestic initiation main shaft rotating diameter 1188mm super sized type horizontal inner hole grinding machine of Tianjin speed reducer factory is exactly in order to solve the grinding of X12 type cycloid wheel pin-and-hole." mechanical design handbook " middle 930 pages is loaded with larger four kinds of type: Dz=750～1200, and this just requires inner hole grinding machine main shaft rotating diameter up to 1350～2000.Calculating shows, if Rz=600, b=70, Ymax=1.5, partly bury tooth, two wheel T ₂=300000 (Nm), 4 wheel moments of torsion will be up to 600000Nm., and maximum type HJW80D is identical for bearing capacity and star-wheel, but is impossible with the integral body cycloid wheel of hardening, because can not the large so inner hole grinding machine of manufacturing; (2) gear-box vibration: producing the main factor of vibration is that prior art input shaft capacity eccentric bearing all adopts the in-built eccentric bushing of roller bearing, and radial internal clearance is larger." rolling bearing application manual " 720 pages: " the actual middle (center) bearing radial internal clearance that uses will have influence on bearing load distribution, vibration, noise, friction torque and life-span." summary of the invention the object of the invention is to provide a kind of " novel pinwheel output cycloidal reducer ", in order to replace background technique " pinwheel output pin swing planetary transmission speed reducer " (ZL200820218490.2).

Technological scheme (1) cycloid wheels are cast iron spoke and Bearing Steel wheel rim assembly structure, greatly simplify technique; (2) adopt two back-to-back combinations of single row conical bearing, radial internal clearance is bordering on zero and eliminates vibration; (3) pin holes on the pin wheel housing is half buried via hole.

Beneficial effect: be according to its creativeness of background technique: (1) bearing capacity is high, Maximum Torque T ₂=600kNm; (2) low cost of manufacture 35-55%; (3) when running inertial force and moment of inertia complete equilibrium, noise are low in theory.

Description of drawings 1. embodiment of the invention structural representations

Fig. 2. input shaft, eccentric bushing, two single-row tapered roller bearing assembling schematic representation

Fig. 3. cycloid wheel, pin-and-hole, wear-resisting ring, pin, column sleeve assembling schematic representation

Fig. 4. assembly type cycloid wheel assembling schematic representation

Embodiment encyclopaedizes the present invention below in conjunction with accompanying drawing:

With reference to Fig. 1. and 2., 3. with 4. 1 kinds of novel pinwheel output cycloidal reducers, comprise body (1) and be contained in the interior input block of body (1) and output block, described input block comprises input shaft (13), capacity eccentric bearing and cycloid wheel assembly, pin (9) and end cap (15), described capacity eccentric bearing comprises roller bearing (10) and eccentric bushing (11), described capacity eccentric bearing is contained in input shaft (13) shaft extension end, described input shaft (13) is bearing in end cap (15) endoporus by bearing (12), described end cap (15) is connected in body (1) input end, described pin (9) two ends reach with end cap (15) respectively and all carry the upper uniform hole of circle (16) close-fitting, described output block comprises output shaft (3) and the pinwheel that is bearing in body (1) endoporus with bearing (2), described pinwheel comprises needle pin (6) and pin wheel housing (5), described pin wheel housing (5) links with output shaft (3) disk, it is characterized in that: described cycloid wheel assembly refers in each group identical two cycloid wheel (4) are arranged, 180 ° of described two cycloid wheel phase differences, described cycloid wheel (4) is by cast iron spoke (L ₂) and Bearing Steel wheel rim (L ₁) be assembled, connect described cast iron spoke (L between the two with uniform junction of the edges of two sheets of paper pin (X) ₂) upper every uniform pin-and-hole interior sliding join a wear-resisting ring (14), described cast iron spoke (L ₂) material is grey cast iron or spheroidal graphite cast iron, anti-seismic performance is good, technology capability is good, cast iron spoke (L ₂) can be used as standard piece in advance machining center hole and uniform pin-and-hole, not only reduce cost but also shorten the manufacture cycle, wear-resisting ring (15) is housed in the pin-and-hole makes pin-and-hole have the very long life.

Described novel pinwheel output cycloidal reducer, it is characterized in that: the upper column sleeve (8) of described pin (9) and cycloid wheel (4) uniform thickness, column sleeve shorten pin and cover lubricate reach stressed even, the equal support plate of the annulus that places between two cycloid wheel (7) also is housed on the described pin (9), greatly improves the flexural strength of pin.

Described novel pinwheel output cycloidal reducer, it is characterized in that: described capacity eccentric bearing comprise two back-to-back single-row tapered roller bearing (10) be contained in inner ring eccentric bushing (8), the described two bearings outer ring small bore end that refers to back-to-back is close to, described single eccentric bushing (8) axial length equals 2T+ (0.003-0.01), T is the single-row tapered roller bearing axial length, the radial clearance of tapered roller bearing can be controlled to and is bordering on zero, thereby eliminates the vibration of input shaft.

Described novel pinwheel output cycloidal reducer, it is characterized in that: the pin holes on the described pin wheel housing (5) is half buried via hole, described half buried via hole and needle pin (6) are movingly, the discussion of half buried via hole sees Wang Wenbin " mechanical design handbook " volume 3.174-129 page or leaf: " RV ... the pin tooth partly is embedded in the pin holes of pin wheel housing; there is no bending deflection ", first buried via hole of described pin wheel housing (5) is that pin wheel housing endoporus car is obtained to Dz-dz+4e+ (0.2-0.4) greatly, half buried via hole opening both sides wedge angle is repaiied blunt, not only improve wedge angle intensity but also be beneficial to rubbing surface oil-feed (Dz-needle pin center circle diameter, dz-needle pin diameter, the e-throw of eccentric), described half buried via hole and needle pin (6) are movingly, make needle pin and the rolling engagement of cycloidal gear teeth as needle guard and cycloidal gear teeth, the maximum value of pinwheel output of the present invention is: needle pin-gear teeth are lubricated fabulous, and pinwheel rotates and makes oil temperature evenly reach heat radiation well.

Calculating shows that needle pin and half buried via hole contact stress only are allowable value 6-8%, and reduction speed ratio 87 increases to 180 needn't take out tooth.

Described new pinwheel output cycloidal reducer, it is characterized in that: described cycloid wheel assembly has two groups, 4 cycloid wheel (4), it is identical that described 4 cycloid wheel middle two are taken turns the phase angle, make the rotating mass on the input shaft be in static balancing, dynamic balancing, stable drive, bearing capacity is specified 2 times, and the device equal support plate of annulus (7) between the cycloid wheel in twos in described 4 makes whole pins simultaneously stressed.

Claims

1. a novel pinwheel is exported cycloidal reducer, comprise body (1) and be contained in the interior input block of body (1) and output block, described input block comprises input shaft (13), capacity eccentric bearing and cycloid wheel assembly, pin (9) and end cap (15), described capacity eccentric bearing comprises roller bearing (10) and eccentric bushing (11), described capacity eccentric bearing is contained in input shaft (13) shaft extension end, described input shaft (13) is bearing in end cap (15) endoporus by bearing (12), described end cap (15) is connected in body (1) input end, described pin (9) two ends reach with end cap (15) respectively and all carry the upper uniform hole of circle (16) close-fitting, described output block comprises output shaft (3) and the pinwheel that is bearing in body (1) endoporus with bearing (2), described pinwheel comprises needle pin (6) and pin wheel housing (5), described pin wheel housing (5) links with output shaft (3) disk, it is characterized in that: described cycloid wheel assembly refers in each group identical two cycloid wheel (4) are arranged, 180 ° of described two cycloid wheel phase differences, described cycloid wheel (4) is by cast iron spoke (L ₂) and Bearing Steel wheel rim (L ₁) be assembled, connect described cast iron spoke (L between the two with uniform junction of the edges of two sheets of paper pin (X) ₂) upper every uniform pin-and-hole interior sliding join a wear-resisting ring (14), described cast iron spoke (L ₂) material is grey cast iron or spheroidal graphite cast iron.

2. described novel pinwheel is exported cycloidal reducer according to claim 1, it is characterized in that: the upper column sleeve (8) of described pin (9) and cycloid wheel (4) uniform thickness, also be equipped with the equal support plate of the annulus that places between two cycloid wheel (7) on the described pin (9).

3. described novel pinwheel is exported cycloidal reducer according to claim 1, it is characterized in that: described capacity eccentric bearing comprise two back-to-back single-row tapered roller bearing (10) be contained in inner ring eccentric bushing (8), the described two bearings outer ring small bore end that refers to back-to-back is close to, described single eccentric bushing (8) axial length equals 2T+ (0.003-0.01), and T is the single-row tapered roller bearing axial length.

4. novel pinwheel according to claim 1 is exported cycloidal reducer, and it is characterized in that: the pin holes on the described pin wheel housing (5) is half buried via hole, and described half buried via hole and needle pin (6) are movingly.

5. novel pinwheel according to claim 1 is exported cycloidal reducer, it is characterized in that: described cycloid wheel assembly has two groups, correspondingly be that cycloid wheel (4) is 4, it is identical that described 4 cycloid wheel middle two are taken turns the phase angle, installs in twos the equal support plate of annulus (7) in described 4 cycloid wheel between the cycloid wheel.