CN201348024Y - Compound small teeth difference reducing gear - Google Patents

Compound small teeth difference reducing gear Download PDF

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Publication number
CN201348024Y
CN201348024Y CNU2008201438899U CN200820143889U CN201348024Y CN 201348024 Y CN201348024 Y CN 201348024Y CN U2008201438899 U CNU2008201438899 U CN U2008201438899U CN 200820143889 U CN200820143889 U CN 200820143889U CN 201348024 Y CN201348024 Y CN 201348024Y
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CN
China
Prior art keywords
gear
tooth
speed reducer
eccentric
output
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008201438899U
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Chinese (zh)
Inventor
荆瑞民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin General Principle Machinery New Technology Co Ltd
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Tianjin General Principle Machinery New Technology Co Ltd
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Priority to CNU2008201438899U priority Critical patent/CN201348024Y/en
Application granted granted Critical
Publication of CN201348024Y publication Critical patent/CN201348024Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a bevel gear-planet-parallel shaft-small teeth difference four-stage transmission compound small teeth difference reducing gear which is in bevel gear-planet-parallel shaft-small teeth difference four-stage transmission, and comprises an input gear pair, an intermediate planetary gear pair, a parallel shaft gear pair, an output small teeth difference gear pair, a box and an end cover. The compound small teeth difference reducing gear greatly improves the transmission ratio and the output torque of a vertical reducing gear, and has the advantages of strong load bearing and overload capability, small vibration, low noise, fast heat radiation, higher gear processing precision, easily ensured processing precision, reduced overall volume and weight, far lower manufacturing cost of the large-power vertical reducing gear, and shorter production cycle.

Description

The few poor tooth speed reducer of a kind of combined type
Technical field
The utility model relates to a kind of retarder, the few poor tooth speed reducer of especially a kind of combined type of level Four transmission.
Background technique
Few tooth difference speed reducer has advantages such as compact structure, big, the multiple tooth engagement of velocity ratio, overload property are good, be widely used in the machinery of industries such as metallurgy, mine, chemical industry, building, agricultural, communications and transportation, generating, especially be widely used especially at heavy duty equipment.Therefore, the few poor tooth speed reducer of development function admirable has significant role to the production of China's machinery industry, and is significant to the economic development of promotion promulgated by the State Council.
Existing fewer differential teeth planetary speed reducer, as application number is that 200610054438.3 " ring gear output planetary speed reducer " is a kind of multicrank two-stage planetary reduction gear, and mainly comprise: input gear shaft, driven gear, eccentric crankshaft, ring gear, ring flat-plate, discoidal bearing support, the inner are discoidal output shaft, end cap, casing etc.Power is by input gear shaft input, by straight-tooth or the helical teeth engagement on the straight-tooth on the input gear shaft or helical teeth and 2 one 8 driven gears, thereby 2 one 8 driven gears rotated, and realizes deceleration of first order straight-tooth or helical teeth and power dividing.The rotation of 2 one 8 driven gears drives corresponding eccentric crankshaft and rotates, the rotation of eccentric crankshaft drives the internal tooth engagement that 1 one 4 ring flat-plates produce the external tooth and the ring gear of dead axle swing ring flat-plate, make ring gear produce revolution, ring gear is connected with the supporting disk partial fixing of output shaft, the drive output shaft rotates, finish power output, realize second level deceleration.The facewidth broad of the ring gear of this speed reducer, processed complex, bearing capacity a little less than, ring gear is fixed on the output shaft, is cantilever support, rigidity is relatively poor, has influenced bearing capacity greatly, vibrates bigger.
And for example application number is 200410046112.7 patent disclosures " interior three-ring gear reducers ", is a kind of single crank one-level planetary reduction gear, mainly comprises: ring flat-plate, two eccentric input shaft, output shaft, the ring gear that has internal tooth, pin, end cap etc.Power drives the ring flat-plate translation by two eccentric input shaft inputs, external tooth on the ring flat-plate and the engagement of the internal tooth on the ring gear, and ring gear is motionless, and ring flat-plate is revolved round the sun, and ring flat-plate is connected with pin with output shaft, as the output mechanism outputting power, realizes that fewer differential teeth planetary slows down.By theory analysis and experimental results show that present ring-type gear reducer exists vibration, noise, temperature rise and bearing early damage in actual use, increased output mechanism, efficient is reduced, and manufacture cost increases, shortcomings such as bearing capacity is not strong, particularly retarder in continuously running, heavy duty, at a high speed, problem is more outstanding under the big speed ratio operating mode, influenced it greatly and applied.
The model utility content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, generally adopt two-stage or three grades of reduction gearing mechanisms at present powerful vertical type speed reducer (change gear), transmission speed ratio is less, and the practical problem that volume is also bigger provides a kind of new combined type few tooth difference speed reducer.
The purpose of this utility model is achieved in that the few tooth difference speed reducer of a kind of combined type of design, the few tooth difference speed reducer of this combined type is a kind of bevel gear-planet-parallel axes-few tooth difference level Four transmission speed reducer, comprises input gear pair, middle planetary gear pair, gear pair with parallel axes, output gear pair with small teeth difference, casing and end cap; Wherein, described output gear pair with small teeth difference comprises driven gear, eccentric crankshaft, ring flat-plate, axle sleeve, bearing, output ring gear, supporting disk, output shaft; Described output shaft is that the inner is discoidal output shaft; The annexation of the few tooth difference speed reducer of combined type is:
Input shaft is provided with drive bevel gear, crowned teeth tooth axle is provided with driven wheel of differential, drive bevel gear and driven wheel of differential engagement, described parallel axes driven gear be separately positioned on eccentric crankshaft one end and be connected and the engagement of the affixed driven gear of eccentric crankshaft by key, eccentric crankshaft flexibly connects by capacity eccentric bearing and supporting disk, 2 ring flat-plates flexibly connect with eccentric crankshaft respectively by capacity eccentric bearing, the no increment of output ring gear and the integrated disc portions of output shaft are bolted to connection, the external tooth engagement of internal tooth and 2 ring flat-plates.
Described eccentric crankshaft has 2, is combined by running shaft and eccentric bushing, and eccentric bushing connects the middle part that is fixed in running shaft by key.Described eccentric crankshaft along the circumferential direction evenly distributes; Described driven gear is 2 spur gears, is separately positioned on an end of eccentric crankshaft, connects with eccentric crankshaft affixed by key; Described ring flat-plate has 2, and the symmetry axis of described ring flat-plate is coaxial decentraction with the symmetry axis of driven gear, and the angle between 2 ring flat-plates evenly distributes along the inner circumference of round box, and the external tooth of described 2 ring flat-plates is involute-type tooth or gerotor type tooth.
The internal tooth of increment is involute-type tooth or pin tooth in the described output ring gear.
The number of teeth difference of the internal tooth of output ring gear 12 and the external tooth of ring flat-plate is 1 tooth, forms few tooth difference transmission.
In the utility model, after bevel gear, planetary pinion and the transmission of parallel-axes gears triple reduction gear, set up the few tooth difference transmission of one-level, its advantage is:
1. the centre distance of retarder planetary stage transmission is reduced, reach the diameter that dwindles planetary stage driving gear diameter, particularly ring gear, improved the Gear Processing precision.
2. improved the transmission speed ratio and the output torque of vertical type speed reducer (change gear) significantly, and carrying and overload capacity are strong.
3. vibration, noise is little, rapid heat dissipation, and machining accuracy easily guarantees, has also reduced the volume and weight of complete machine simultaneously, greatly reduces the manufacture cost of high-power vertical speed reducer, has also shortened the manufacture cycle.
Description of drawings
Fig. 1 is the overall structure schematic representation of the few poor tooth speed reducer of the utility model combined type;
Wherein
1 input shaft, 9 ring flat-plates
2 input gear pairs, 10 excentric sleeves
3 middle planetary gear pairs, 11 capacity eccentric bearings
4 gear pair with parallel axes, 12 output ring gears
5 connect internal tooth casing 13 supporting disks
6 parallel axes driven gears, 14 output shafts
7 driven gear middle planetary are taken turns 15 casings
8 eccentric crankshafts, 16 end caps
Embodiment
Fig. 1 is the overall structure schematic representation of the few poor tooth speed reducer of the utility model combined type.
As shown in Figure 1: a kind of bevel gear-planet-parallel axes-few tooth difference speed reducer of few tooth difference four-stage driving combined type mainly comprises input gear pair, middle planetary gear pair, gear pair with parallel axes, output gear pair with small teeth difference, casing 15 and end cap 16.Wherein, the few poor tooth speed reducer of described combined type comprises input shaft 1, input gear pair 2, middle planetary gear pair 3, gear pair with parallel axes 4, connects internal tooth casing 5, parallel axes driven gear 6, driven gear 7, eccentric crankshaft 8, ring flat-plate 9, excentric sleeve 10, capacity eccentric bearing 11, output ring gear 12, supporting disk 13, output shaft 14; Wherein: output shaft 14 is discoidal output shaft for the inner.
In conjunction with the accompanying drawings, the utility model is described as follows:
Power is realized first order deceleration by input shaft 1 input gear pair, and the input gear pair is delivered to the middle planetary gear pair realization second level with power by internal tooth casing 5 and slows down; The middle planetary gear pair is realized third level deceleration with transmission of power to gear pair with parallel axes, parallel axes driven gear 6 and driven gear 7 engagements that are arranged on eccentric crankshaft 8 one ends; 2 ring flat-plates 9 flexibly connect with eccentric crankshaft 8 respectively by capacity eccentric bearing 11; The external tooth engagement of the internal tooth of output ring gear 12 and 2 ring flat-plates, the integrated disc portions of no increment and output shaft is bolted to connection.Eccentric crankshaft 8 has 2, driven gear 7 is fixed on the eccentric crankshaft 8 by the key connection, eccentric crankshaft 8 flexibly connects by capacity eccentric bearing 11 and supporting disk 13, eccentric crankshaft 8 along the circumferential direction evenly distributes, eccentric crankshaft 8 is combined by running shaft and eccentric bushing, and eccentric bushing connects the middle part that is fixed in running shaft by key.Driven gear 7 is 2 spur gears, is separately positioned on an end of eccentric crankshaft 8, connect with eccentric crankshaft 8 by key affixed, and with parallel axes driven gear 6 on the straight-tooth engagement.Ring flat-plate 9 has 2, flexibly connect by capacity eccentric bearing 11 and eccentric crankshaft 8 respectively, the symmetry axis of ring flat-plate 9 is coaxial decentraction with the symmetry axis of driven gear 7, and the angle between 2 ring flat-plates 9 evenly distributes along the inner circumference of round box 15, and the external tooth of 2 ring flat-plates 9 is the involute-type tooth.The no increment of output ring gear 12 and the integrated disc portions of output shaft 14 are bolted to connection, and the internal tooth of increment is the involute-type tooth in the output ring gear 12.The involute-type external tooth of 2 ring flat-plates 9 meshes with the involute-type internal tooth of exporting ring gear 12 simultaneously, because the external tooth of ring flat-plate 9 is 1 tooth with the number of teeth difference of the internal tooth of output ring gear 12, form few tooth difference transmission, at last the output mechanism outputting power that forms by output ring gear 12 and output shaft 14.
The utility model has been set up the one-level driving of parallel axes and the transmission of one-level few teeth difference after bevel gear one planet gear double reduction gear transmission, its advantage comprise following some:
1. the centre-to-centre spacing of decelerator planetary stage transmission is reduced, reach that to dwindle the planetary stage travelling gear straight Directly, particularly the diameter of ring gear has improved the Gear Processing precision.
2. improved significantly transmission speed ratio and the output torque of vertical type speed reducer (change gear), and carrying and overload Ability is strong.
3. vibration, noise is little, rapid heat dissipation, and machining accuracy easily guarantees, also reduced simultaneously complete machine Volume and weight greatly reduces the manufacturing cost of high-power vertical reductor, has also shortened production Cycle.

Claims (7)

1. a combined type is lacked tooth difference speed reducer, comprise input gear pair (2), middle planetary gear pair (3), gear pair with parallel axes (4), output gear pair with small teeth difference, casing (15) and end cap (16), it is characterized in that: described output gear pair with small teeth difference comprises driven gear (7), eccentric crankshaft (8), ring flat-plate (9), excentric sleeve (10), capacity eccentric bearing (11), output ring gear (12), supporting disk (13), output shaft (14);
Wherein: output shaft (14) is discoidal output shaft for the inner;
The annexation of the few tooth difference speed reducer of combined type is:
Described parallel axes driven gear (6) be separately positioned on eccentric crankshaft (8) one ends and be connected and the engagement of the affixed driven gear (7) of eccentric crankshaft (8) by key, eccentric crankshaft (8) flexibly connects by capacity eccentric bearing (11) and supporting disk (13), 2 ring flat-plates (9) flexibly connect with eccentric crankshaft (8) respectively by capacity eccentric bearing (11), the no increment of output ring gear (12) and the integrated disc portions of output shaft (14) are bolted to connection, the external tooth engagement of internal tooth and 2 ring flat-plates (9).
2. the few tooth difference speed reducer of combined type according to claim 1 is characterized in that the internal tooth of the interior increment of described output ring gear (12) is involute-type tooth or pin tooth.
3. the few tooth difference speed reducer of combined type according to claim 1 is characterized in that described eccentric crankshaft (8) has 2, is combined by running shaft and eccentric bushing, and eccentric bushing connects the middle part that is fixed in running shaft by key.
4. the few tooth difference speed reducer of combined type according to claim 3 is characterized in that described eccentric crankshaft (8) along the circumferential direction evenly distributes.
5. the few tooth difference speed reducer of combined type according to claim 1 is characterized in that described driven gear (7) is 2 spur gears, is separately positioned on an end of eccentric crankshaft (8), connects with eccentric crankshaft (8) affixed by key.
6. the few tooth difference speed reducer of combined type according to claim 1 is characterized in that described ring flat-plate (9) has 2, and the external tooth of 2 ring flat-plates (9) is involute-type tooth or gerotor type tooth.
7. the few tooth difference speed reducer of combined type according to claim 6 is characterized in that the symmetry axis of described plate (9) is coaxial decentraction with the symmetry axis of driven gear (7).
CNU2008201438899U 2008-12-05 2008-12-05 Compound small teeth difference reducing gear Expired - Fee Related CN201348024Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562056A (en) * 2012-01-30 2012-07-11 郑州四维机电设备制造有限公司 Small tooth difference type coal mining machine rocker arm
CN102797797A (en) * 2011-05-27 2012-11-28 吴小杰 Three-ring decelerator with high bearing capacity
CN102996066A (en) * 2012-12-17 2013-03-27 中联重科股份有限公司 Rotary-drill power head and rotary-drill mechanical equipment
CN108488335A (en) * 2018-07-04 2018-09-04 郑州大学 A kind of speed changer based on small teeth number difference planet gear

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797797A (en) * 2011-05-27 2012-11-28 吴小杰 Three-ring decelerator with high bearing capacity
CN102797797B (en) * 2011-05-27 2015-12-16 陈伟 High-bearing capacity three-ring speed reducer
CN102562056A (en) * 2012-01-30 2012-07-11 郑州四维机电设备制造有限公司 Small tooth difference type coal mining machine rocker arm
CN102996066A (en) * 2012-12-17 2013-03-27 中联重科股份有限公司 Rotary-drill power head and rotary-drill mechanical equipment
CN108488335A (en) * 2018-07-04 2018-09-04 郑州大学 A kind of speed changer based on small teeth number difference planet gear
CN108488335B (en) * 2018-07-04 2020-01-31 郑州大学 speed variator based on small tooth difference planetary gear

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091118

Termination date: 20101205