CN202176679U - Crankshaft inside meshing gear speed reducer - Google Patents
Crankshaft inside meshing gear speed reducer Download PDFInfo
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- CN202176679U CN202176679U CN2011202399075U CN201120239907U CN202176679U CN 202176679 U CN202176679 U CN 202176679U CN 2011202399075 U CN2011202399075 U CN 2011202399075U CN 201120239907 U CN201120239907 U CN 201120239907U CN 202176679 U CN202176679 U CN 202176679U
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- gear
- planetary system
- bent axle
- system gear
- speed reducer
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Abstract
The utility model relates to a crankshaft inside meshing gear speed reducer, which solves the problems of large volume and weight, small transmission power and small transmission ratio of the speed reducer. The crankshaft inside meshing gear speed reducer comprises an outer shell body composed of a front shell body and a rear shell body, and an input crankshaft and a speed-reducing output shaft are arranged in the outer shell body. A driving planetary gear and a driven planetary gear are arranged on the input crankshaft through a bearing and are coaxially arranged in parallel, and the driving planetary gear and the driven planetary gear are fixedly connected. An output inside gear is arranged on the inner hole wall of one end of the speed-reducing output shaft opposite with the driving planetary gear, and the output inside gear is engaged with the driving planetary gear. The inner wall of the rear shell body is provided with a fixed inside gear, and the fixed inside gear is engaged with the driven planetary gear. The crankshaft inside meshing gear speed reducer has the advantages of compact structure, small volume and large transmission ratio and reduces the eccentricity and the phenomenon of center of gravity deviation.
Description
Technical field
The utility model relates to the speed reducer in a kind of mechanical transmission, relates in particular to the bent axle inside engaged gear speed reducer that a kind of volume is little, in light weight, transmission power is big, velocity ratio is big.
Background technique
Speed reducer in existing the use generally adopts cylinder and cone gear, worm and gear, planetary pinion, cycloidal-pin wheel, harmonic wheel, three ring wheels and stepless speed regulation speed reducer to solve mechanically operated deceleration or variable motion, but they exist following shortcoming in making and using:
1. for cylinder and cone gear and worm and worm gear speed reducer, energy consumption is big in mechanical transmission course, exists in the application to high-power, big speed ratio that volume is big, Heavy Weight, and receives the restriction of place occasion;
2. for planet-gear speed reducer, though volume is little, in light weight, manufacturing structure is complicated; Application area is little; Generally be applied on stepping and the actuating motor, its velocity ratio is little, must be through two or three grades of allocation problems that reach big speed ratio when increasing velocity ratio.Moreover output shaft is restricted powerful transmission (diameter of axle design), radial force (bearing also closes application).
3. for cycloidal planetary gear speed reducer; Though volume is less; But precision of manufacturing process height and complex structure, in generally being applicable to, low power application area, also need be through two when big speed ratio is used, the one-level one-level collocation of tertiary gear speed reducer uses; In the collocation transmission of multi-stage speed-reducing machine, its shell body increases immediately.It exists output shaft radial force and transmission energy consumption problem equally.
4. for the harmonic wheel speed reducer,, only be applicable to small-power, also need reach when big speed ratio is used through twin-stage, the complex wave level kind of drive because major part flexbile gear manufacturing process is complicated.
5. need equally through combination multistage output power (power) when three ring wheel speed reducers use big speed ratio.
6. be that friction plate, wheel through the manufacturing of various types of materials frictional behaviour reaches the friction driving speed change for general employing of stepless speed changer.For this reason, be not suitable for application high-power, big speed ratio.
In order to address the above problem and a kind of inside engaged gear retarder to have occurred; It adopts double-deck interior toothing; Like notice of authorization number is CN2491651Y, and name is called the Chinese utility model patent of reverse sync deceleration unit, and its structure is for comprising input bent axle and output shaft; In input double-deck internal tooth is installed on the bent axle, two internal tooths respectively with unit casing on fixedly internal tooth, the output internal tooth on the output shaft be meshed.But this unit has following shortcoming: it be double-deck in toothing, so just cause design external volume, excircle dimension excessive.And the cylindrical decentre distance of shaft centers of outer inside engaged gear causes the eccentricity of complete machine excessive from excessive, and deviation of gravity center is big, even equilibrium block is installed, also is difficult to reach balance.In addition, double-deck inside engaged gear, the two circumference of internal layer inside engaged gear and outer inside engaged gear bigger causes the design step-down ratio also smaller.
Summary of the invention
The utility model has mainly solved the problem that existing retarder volume is little, in light weight, transmission power is little, velocity ratio is little, and the bent axle inside engaged gear that a kind of volume weight is little, transmission power is big, velocity ratio is big speed reducer is provided.
The utility model has solved also that the inside engaged gear retarder external volume excircle dimension of toothing is excessive in the existing bilayer, eccentricity is excessive, deviation of gravity center is big, the velocity ratio problem of smaller, and the bent axle inside engaged gear that a kind of volume weight is little, transmission power is big, velocity ratio is big speed reducer is provided.
The utility model solves the technological scheme that its technical problem adopted: a kind of bent axle inside engaged gear speed reducer; Comprise the frame that constitutes by front case and rear case; In frame, be provided with input bent axle and deceleration output shaft; Said input crankshaft front end is connected on the central bore of deceleration output shaft through bearing; On said input bent axle, be provided with initiatively planetary system gear and driven planetary system gear, it is characterized in that through bearing: said active planetary system gear and coaxial the laterally arranging of driven planetary system gear, and initiatively planetary system gear and driven planetary system gear are fixedly connected; The deceleration output shaft is provided with output inner gear with the inner hole wall of the relative end of active planetary system gear; Said output inner gear is meshed with active planetary system gear, is provided with fixed annulus at said rear case inwall, and said fixed annulus is meshed with driven planetary system gear.Inside engaged gear in the utility model i.e. active planetary system gear adopts coaxial parallel mounting structure with driven planetary system gear; Compare the structure that adopts double-deck inside engaged gear; Reduced excircle dimension significantly, made project organization compact more, the speed reducer volume is littler.And make that active planetary system gear and driven planetary system gear distance center axle are nearer, reduce eccentricity as far as possible, reduce the deviation of gravity center phenomenon.In addition, owing to adopt parallel mounting structure, the difference of the pitch circle of feasible initiatively planetary system gear and driven planetary system gear is less, and the difference of pitch circle is approaching more, and slowing down, it is bigger than more to rotate.
As a kind of preferred version; Said input bent axle intermediate portion is the eccentric shaft of one section disalignment line position; Said active planetary system gear and driven planetary system gear are installed on the eccentric shaft; Input bent axle and the opposing end of deceleration output shaft are provided with spline, and the input bent axle links to each other with motor output shaft through spline.Initiatively planetary system gear and driven planetary system gear are installed on the eccentric shaft, and when rotating, eccentric shaft will rotate through pair of bearings drive active planetary system gear and driven planetary system gear like this; Input bent axle and motor interface adopt the spline Placement; Speed reducer radial component when receiving load, stressed even, its center accurate positioning, easy for installation; Prevent that simultaneously motor and speed reducer from installing in the connection procedure damage to the speed reducer internal bearings; Higher interchangeability is arranged again, be convenient to all kinds of motor and connect, reach the purpose of popularization.
As a kind of preferred version, said input bent axle one end is provided with the eccentric balance wheel, and said eccentric balance wheel is for fan-shaped, and the eccentric balance wheel laterally arranges with said active planetary system gear, driven planetary system gear.Because the eccentric shaft portion of input bent axle; And be installed in active planetary system gear and the driven planetary system gear on the eccentric shaft, and there is the skew of center of gravity in pair of bearings, behind the setting-up eccentricity stabilizer; Make dynamic balancing be in state of equilibrium, the oscillation phenomenon when reducing the operation of whole speed reducer.
As a kind of preferred version, said active planetary system gear is the gear of the different numbers of teeth of same modulus or the different numbers of teeth of different modulus with driven planetary system gear.When the input crankshaft rotating, initiatively planetary pinion and driven planetary system gear turn round with output inner gear, fixed annulus engagement respectively.Because the location internal gear is fixing, driven planetary system gear is along the location rotation of internal gear inner ring, and driven planetary system gear fixes with planetary system gear initiatively; The synchronous same-speed operation; Initiatively the planetary system gear makes the rotation of deceleration output shaft internal gear simultaneously again, at this moment turning round with the engagement of deceleration output shaft internal gear; The poor of speed will appear in two pairs of inside engaged gear rotations, promptly import bent axle and different separately rotational speeies will occur with the deceleration output shaft.
As a kind of preferred version, the pitch circle of said active planetary system gear is greater than the pitch circle of driven planetary system gear.Pitch circle numerical value is the long-pending of the module and the number of teeth, and during greater than the pitch circle of driven planetary system gear, speed reducer is forward output at the pitch circle of active planetary system gear.
As a kind of preferred version, the pitch circle of said driven planetary system gear is greater than the initiatively pitch circle of planetary system gear.During greater than the pitch circle of active planetary system gear, speed reducer is reverse output at the pitch circle of driven planetary system gear.
As a kind of preferred version; Said deceleration output shaft axle center is provided with through hole; Between said input crankshaft front end and through hole, also be provided with bearing and unload load plate, said bearing unloading panel surface is the discoid of middle indent, and said bearing unloading tray bottom is provided with the handle body; The handle body is inserted in the through hole, and the edge that said bearing unloads the load plate card contacts with bearing.This bearing unloads load plate and is used for dismantling input bent axle and the bearing that slows down between the output endoporus, and the use steel pole is inserted in the through hole of deceleration output shaft and knocks the bearing removal dish during dismounting, just can accomplish bearing removal work.
As a kind of preferred version; The said input bent axle output shaft one end axle center of slowing down relatively is provided with first blind hole; Unload the disk center position at said bearing and be provided with second blind hole; Said first blind hole and second blind hole are on the same axis, between first blind hole and second blind hole, are provided with ball, said ball with first blind hole, second blind hole is tangent cooperates.Motor reel is being installed or on the deceleration output shaft, drive wheel is being installed, during like belt wheel, gear or sprocket wheel, when preventing to knock and damage internal bearings; Prevented the large size friction phenomenon between input bent axle and the bearing removal dish in addition.
As a kind of preferred version, front case is provided with fuel filler neck.On fuel filler neck, pass through pressing oil gun the inner chamber of gear lubricant adding speed reducer, play gear operation lubrication.
As a kind of preferred version, be provided with seal ring at the axis hole place of said front case and rear case.Prevent the leak generation of phenomenon of gear oil.
The utility model has the advantages that: 1. inside engaged gear adopts the structure that laterally arranges, and has reduced excircle dimension, makes that project organization is compact more, volume is little; 2. the difference of the pitch circle of two groups of inside engaged gears changes increasing, and the difference of pitch circle is approaching more, and step-down ratio is big more, otherwise then more little; 3. be applicable to large speed ratio, high-power input output; 4. realize the coaxial reverse Application Design; 5. two groups of inside engaged gear distance center axles are nearer, reduced eccentricity as far as possible, and the deviation of gravity center phenomenon makes eccentric dynamic balancing wheel can better play balanced action.
Description of drawings
Fig. 1 is a kind of cross section cross-sectional schematic of the utility model;
Fig. 2 be among Fig. 1 A-A to generalized section;
Fig. 3 be among Fig. 1 B-B to generalized section;
Fig. 4 is the enlarged diagram at C place among Fig. 1.
The 1-front case 2-rear case 3-deceleration output shaft 4-input bent axle 5-eccentric shaft 6-initiatively driven planetary system gear of planetary system gear 7-8-output inner gear 9-fixed annulus 10-fuel filler neck 11-seal ring 12-bearing 13-spline 14-through hole 15-bearing unloads the load plate 16-ball 17-second blind hole 18-first blind hole 19-central bore 20-eccentric balance wheel 21-motor output shaft 22-handle body
Embodiment:
Below through embodiment, and combine accompanying drawing, the technological scheme of the utility model is further described.
Embodiment 1:
A kind of bent axle inside engaged gear of present embodiment speed reducer, as shown in Figure 1, comprise the frame that connects and composes by front case 1 and frame 2, front case adopts conical structure to cooperate with the rear case binding site, and on four angles, fixes through bolt.In housing, be provided with input bent axle 4 and deceleration output shaft 3; Deceleration output shaft 4 links to each other with front case, rear case inwall respectively through bearing 12; Deceleration output shaft 4 is positioned at and has a central bore 19 on frame one end; Input bent axle 4 front ends are connected central bore 19 bottoms through bearing 12, and central bore edge inwall is provided with output inner gear 8.Input bent axle 4 intermediate portions are the eccentric shaft 5 of one section disalignment line position; On eccentric shaft, coaxial active planetary system gear that laterally arranges 6 and driven planetary system gear 7 are arranged through Bearing Installation; Initiatively planetary system gear 6 fixes with driven planetary system gear 7 and is integral; As shown in Figure 3, initiatively planetary system gear 6 is meshed with output inner gear 8 on the deceleration output shaft, and is as shown in Figure 4; The inwall of rear case is provided with the fixed annulus 9 that is wholely set with rear case, and driven planetary system gear 6 is meshed with fixed annulus 9.Eccentric balance wheel 20 is installed on the eccentric shaft left end of input bent axle 4, and this eccentric balance wheel parallels setting with active planetary system gear 6 with driven planetary system gear 7.The right-hand member of input bent axle is provided with spline 13, and motor output shaft 21 is connected with the input bent axle through spline.Deceleration output shaft 3 axle center are provided with through hole 14; As shown in Figure 4; Between input bent axle 4 front ends and through hole 14, also be provided with bearing and unload load plate 15, it is the discoid of middle indent that bearing unloads load plate, and bearing unloading tray bottom is provided with handle body 22; The handle body is inserted in the through hole 14, and the edge that bearing unloads the load plate card contacts with bearing 12.Input bent axle 4 relative deceleration output shafts 3 one end axle center are provided with first blind hole 18; Unload load plate 15 central positions at bearing and be provided with second blind hole 18; First blind hole and second blind hole are on the same axis; Between first blind hole and second blind hole, be provided with ball 16, ball with first blind hole, second blind hole is tangent cooperates.As shown in Figure 1, front case 1 is provided with fuel filler neck 10, is provided with seal ring 11 at the axis hole place of front case 1 and rear case 2.Speed reducer in the present embodiment is for being rotated in the forward speed reducer, and the pitch circle of its active planetary system gear is less than the pitch circle of driven planetary system gear.During speed reducer work, the motor input shaft drives the input crankshaft rotating, and initiatively planetary pinion and driven planetary system gear mesh running with output inner gear, fixed annulus respectively.Because location internal gear wheel is fixed; Driven planetary system gear is the rotation of internal gear inner ring along the location, and driven planetary system gear fixes the synchronous same-speed operation with active planetary system gear; Initiatively the planetary system gear is turning round with the engagement of deceleration output shaft internal gear; Make simultaneously the rotation of deceleration output shaft internal gear again, at this moment, the poor of speed will appear in two pairs of inside engaged gear rotations; Because initiatively the pitch circle of planetary system gear is less than the pitch circle of driven planetary system gear, then makes the deceleration output shaft be and is rotated in the forward.
Embodiment 2:
Speed reducer in the present embodiment is the counterrotating speed reducer; The pitch circle of its active planetary system gear is greater than the pitch circle of driven planetary system gear; Then output inner gear and fixed annulus are made corresponding adjustment according to active planetary system gear and driven planetary system gear, and the structure among other structures and the embodiment 1 is consistent.Speed reducer is when work in the present embodiment, and the deceleration output shaft rotates with the input crankshaft reversal.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as front case, rear case, input bent axle, deceleration output shaft, eccentric shaft, active planetary system gear, driven planetary system gear, eccentric balance wheel morely, get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (10)
1. bent axle inside engaged gear speed reducer; Comprise the frame that constitutes by front case and rear case; In frame, be provided with input bent axle and deceleration output shaft; Said input crankshaft front end is connected on the central bore of deceleration output shaft through bearing; Go up through bearing at said input bent axle (4) and to be provided with initiatively planetary system gear and driven planetary system gear, it is characterized in that: said active planetary system gear (6) and coaxial the laterally arranging of driven planetary system gear (7), and active planetary system gear and driven planetary system gear are fixedly connected; Deceleration output shaft (3) is provided with output inner gear (8) with the inner hole wall of the relative end of active planetary system gear (6); Said output inner gear is meshed with active planetary system gear (6), is provided with fixed annulus (9) at said rear case (2) inwall, and said fixed annulus is meshed with driven planetary system gear (7).
2. bent axle inside engaged gear speed reducer according to claim 1; It is characterized in that said input bent axle (4) intermediate portion is the eccentric shaft (5) of one section disalignment line position; Said active planetary system gear (6) and driven planetary system gear (7) are installed on the eccentric shaft (5); Input bent axle and the opposing end of deceleration output shaft are provided with spline (13), and the input bent axle links to each other with motor output shaft through spline.
3. bent axle inside engaged gear speed reducer according to claim 2; It is characterized in that said input bent axle (4) one ends are provided with eccentric balance wheel (20); Said eccentric balance wheel is for fan-shaped, and the eccentric balance wheel laterally arranges with said active planetary system gear (6), driven planetary system gear.
4. according to claim 1 or 2 or 3 described a kind of bent axle inside engaged gear speed reducers, it is characterized in that said active planetary system gear (6) and the gear of driven planetary system gear (7) for the different numbers of teeth of same modulus or the different numbers of teeth of different modulus.
5. bent axle inside engaged gear speed reducer according to claim 4 is characterized in that the pitch circle of said active planetary system gear (6) is greater than the pitch circle of driven planetary system gear (7).
6. bent axle inside engaged gear speed reducer according to claim 4 is characterized in that the pitch circle of said driven planetary system gear (7) is greater than the initiatively pitch circle of planetary system gear (6).
7. bent axle inside engaged gear speed reducer according to claim 1; It is characterized in that said deceleration output shaft (3) axle center is provided with through hole (14); Between said input bent axle (4) front end and through hole, also be provided with bearing and unload load plate (15), it is the discoid of middle indent that said bearing unloads load plate, and said bearing unloading tray bottom is provided with handle body (22); The handle body is inserted in the through hole, and the edge that said bearing unloads the load plate card contacts with bearing (12).
8. bent axle inside engaged gear speed reducer according to claim 7; It is characterized in that said input bent axle (4) output shaft (3) the one end axle center of slowing down relatively are provided with first blind hole (18); Unload load plate (15) central position at said bearing and be provided with second blind hole (17); Said first blind hole and second blind hole are on the same axis, between first blind hole and second blind hole, are provided with ball (16), said ball with first blind hole, second blind hole is tangent cooperates.
9. according to claim 1 or 2 or 3 or 8 described bent axle inside engaged gear speed reducers, it is characterized in that front case (1) is provided with fuel filler neck (10).
10. according to claim 1 or 2 or 3 or 8 described a kind of bent axle inside engaged gear speed reducers, it is characterized in that being provided with seal ring (11) at the axis hole place of said front case (1) and rear case (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202399075U CN202176679U (en) | 2011-07-08 | 2011-07-08 | Crankshaft inside meshing gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202399075U CN202176679U (en) | 2011-07-08 | 2011-07-08 | Crankshaft inside meshing gear speed reducer |
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| Publication Number | Publication Date |
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| CN202176679U true CN202176679U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202399075U Expired - Fee Related CN202176679U (en) | 2011-07-08 | 2011-07-08 | Crankshaft inside meshing gear speed reducer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508584A (en) * | 2016-02-01 | 2016-04-20 | 上海奇步机器人有限公司 | Planetary gear transmission with embedded bearing mechanism |
| CN105697662A (en) * | 2016-03-12 | 2016-06-22 | 芜湖瑞思机器人有限公司 | Novel internal gear output type planetary wheel speed reducer |
| CN108843749A (en) * | 2018-09-11 | 2018-11-20 | 广州煌牌自动设备有限公司 | A kind of speed reducer |
| CN109058391A (en) * | 2018-11-02 | 2018-12-21 | 重庆大学 | Mini-type tubular cycloidal pinwheel planetary gear speed reducer |
| CN111022587A (en) * | 2019-11-18 | 2020-04-17 | 衡阳翔润机械有限公司 | Cycloidal speed reducer |
-
2011
- 2011-07-08 CN CN2011202399075U patent/CN202176679U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508584A (en) * | 2016-02-01 | 2016-04-20 | 上海奇步机器人有限公司 | Planetary gear transmission with embedded bearing mechanism |
| CN105697662A (en) * | 2016-03-12 | 2016-06-22 | 芜湖瑞思机器人有限公司 | Novel internal gear output type planetary wheel speed reducer |
| CN108843749A (en) * | 2018-09-11 | 2018-11-20 | 广州煌牌自动设备有限公司 | A kind of speed reducer |
| CN109058391A (en) * | 2018-11-02 | 2018-12-21 | 重庆大学 | Mini-type tubular cycloidal pinwheel planetary gear speed reducer |
| CN111022587A (en) * | 2019-11-18 | 2020-04-17 | 衡阳翔润机械有限公司 | Cycloidal speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20140708 |
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| EXPY | Termination of patent right or utility model |