CN201381525Y

CN201381525Y - Rotating planetary reducer

Info

Publication number: CN201381525Y
Application number: CN200920149670U
Authority: CN
Inventors: 朱学军; 吴冬萌; 刘毓泉; 朱玉新; 何润兰; 江忠良; 马善红
Original assignee: Ganzhou Wuhuan Machine Co Ltd
Current assignee: Ganzhou Wuhuan Machine Co Ltd
Priority date: 2009-04-18
Filing date: 2009-04-18
Publication date: 2010-01-13
Anticipated expiration: 2019-04-18

Abstract

The utility model discloses a rotating planetary reducer, and belongs to the technical field of middle and small excavator reducing machines. The reducer comprises a reducer housing, a primary planetary supporting disk component, a secondary planetary supporting disk component and an output shaft. The reducer is characterized in that the primary planetary supporting disk component and the secondary planetary supporting disk component are mounted in the reducer housing; the rotating motion of a motor drive shaft of the main engine is transferred to a drive gear connected by a spline; three primary planetary gears are decelerated by meshing with the drive gear; the primary planetary gears are mounted on the primary planetary supporting disk component; a transition gear is connected with the primary planetary supporting disk component through a spline; the rotation of the primary planetary gears drives the transition gear to rotate; three secondary planetary gears achieves the secondary deceleration of the rotating planetary reducer by meshing with the transition gear; and finally, the secondary planetary supporting disk is connected with the output shaft through a spline to drive the output shaft to conduct deceleration output. On the basis of achieving the rotation function, a secondary planetary reducing mechanism is added, so that that the speed-reducing mechanism has the advantages of compact structure, small volume, high efficiency, high reduction ratio, high bearing capacity, little heat output and power loss, reliable operation and the like.

Description

The rotary planetary reductor

Technical field

The utility model is a kind of rotary planetary reductor, belongs to middle-size and small-size excavator deceleration field of mechanical technique.

Technical background

That rotary planetary apparatus structure complexity in the variable delivery hydraulic system of present middle-size and small-size digging machine, process technology require is high, manufacture difficulty is bigger, and price is high again.

Summary of the invention

In order to overcome the deficiency of existing middle-size and small-size digger revolving planetary reducer, the utility model provides a kind of structure more easy, adopts the secondary planet deceleration device, is meshed with ring gear through two-stage planet and realizes the rotating rotary planetary reductor of turntable

The technical scheme that its technical problem that solves the utility model adopts is: a kind of rotary planetary reductor comprises reducer shell, one-level planet supporting disk assembly, secondary planet supporting disk assembly, output shaft.It is characterized in that: (1) one-level planet supporting disk assembly is made up of primary planet pinion, one-level planet supporting disk, needle bearing, needle bearing inner ring, gear pad respectively.Primary planet pinion is contained on three pillars of one-level planet supporting disk; Needle bearing and needle bearing inner ring are housed in the middle of primary planet pinion and the pillar; The gear pad is contained in below the one-level every trade star gear; (2) secondary planet supporting disk assembly is made up of three secondary planetary gears, secondary planet supporting disk, needle bearing, needle bearing inner ring, secondary planet cover plate, hexagon socket countersunk flat cap head screw respectively.Secondary planetary gear is contained on four pillars of secondary planet supporting disk; Needle bearing and needle bearing inner ring are housed in the middle of secondary planetary gear and the pillar; And the secondary planet cover plate is fixed on the top of four pillars of secondary planet supporting disk by hexagon socket countersunk flat cap head screw; (3) excavator main frame motor drive shaft connects with travelling gear by spline; Travelling gear and primary planet pinion engagement, primary planet pinion is installed on the one-level planet supporting disk, and one-level planet supporting disk connects with transition gear by spline; Transition gear and secondary planetary gear engagement, secondary planetary gear is installed on the secondary planet supporting disk, and the secondary planet supporting disk connects with output shaft by spline.

One-level planet supporting disk assembly and secondary planet supporting disk assembly are housed in the reducer shell.The rotatablely moving of main frame motor drive shaft is sent on the travelling gear by splined, and three primary planet pinions are by slowing down with the engagement of travelling gear.Primary planet pinion is installed on the one-level planet supporting disk, and transition gear and one-level planet supporting disk are with splined, the rotation of primary planet pinion drives the transition gear transmission, three secondary planetary gears are by realizing the double reduction of rotary planetary reductor with the engagement of transition gear, and final secondary planet supporting disk drives output shaft output with splined.

The beneficial effects of the utility model are on the basis of realizing revolute function, increased the secondary planet reducing gear, made that reducing gear has compact conformation, volume is little, efficient is high, speed reducing ratio is big, supporting capacity is strong, calorific value and advantages such as power loss is little, reliable operation; Adopt the secondary planetary gear transmission, reasonably utilized external toothing characteristics in a plurality of planetary gears, realized power dividing; Reducer shell has adopted the advanced technologies of tufftride, has significantly improved fatigue strength, toughness and the corrosion resistance of ring gear; Thereby adopted gear axial modification technology to increase the supporting capacity of gear and the noise that reduces mechanism.

Further specify the utility model below in conjunction with drawings and Examples

Description of drawings

Fig. 1 is the outline drawing of the utility model rotary planetary reductor;

Fig. 2 is the general assembly drawing of the utility model rotary planetary reductor;

Fig. 3 is the one-level planet supporting disk component drawings of the utility model rotary planetary reductor;

Fig. 4 is the secondary planet supporting disk component drawings of rotary planetary reductor of the present utility model.

Among the figure, 1. output shaft, 2. backing plate, 3. dustproof sheet, 4. seal cover, 5. single-row tapered roller bearing, 6. reducer shell, 7. outside framework oil seal, 8. single-row tapered roller bearing, 9. collar ring, 10. semicircle collar, 11. secondary planet supporting disk assemblies, 12. circlip for shaft, 13. transition gears, 14. one-level planet supporting disk assemblies, 15. travelling gear, 16. 3 angle cover plates, 17. screw plugs, 18. sealing ring, 19. primary planet pinion, 20. one-level planet supporting disks, 21. needle bearings, 22. needle bearing inner ring, 23. the gear pad, 24. secondary planetary gears, 25. secondary planet supporting disks, 26. needle bearing, 27. the needle bearing inner ring, 28. secondary planet cover plates, 29. hexagon socket countersunk flat cap head screws.

The specific embodiment

Embodiment one

The utility model embodiment is the middle-size and small-size digger revolving planetary reducer of R9008, use is made up of reducer shell (6), one-level planet supporting disk assembly (14), secondary planet supporting disk assembly (11) and output shaft (1) on 3.5～6.5 tons middle-size and small-size excavator.

One-level planet supporting disk assembly (14) is made up of primary planet pinion (19), one-level planet supporting disk (20), needle bearing (21), needle bearing inner ring (22), gear pad (23) etc.It is characterized in that: primary planet pinion (19) is contained on three pillars of one-level planet supporting disk (20); Primary planet pinion (19) and middle needle bearing (21) and the needle bearing inner ring (22) of being equipped with of the pillar of one-level planet supporting disk (20); Gear pad (23) is contained in below the primary planet pinion (19).

Secondary planet supporting disk assembly (11) is made up of secondary planetary gear (24), secondary planet supporting disk (25), needle bearing (26), needle bearing inner ring (27), secondary planet cover plate (28), hexagon socket countersunk flat cap head screw (29) respectively.Secondary planetary gear (24) is contained on four pillars of secondary planet supporting disk (25); Secondary planetary gear (24) and middle needle bearing (26) and the needle bearing inner ring (27) of being equipped with respectively of the pillar of secondary planet supporting disk (25); And secondary planet cover plate (28) is fixed on the top of four pillars of secondary planet supporting disk (25) by hexagon socket countersunk flat cap head screw (29).

The utility model operating principle

Rotatablely moving of main frame motor drive shaft is sent on the travelling gear (15) by splined, and three primary planet pinions (19) are by slowing down with the engagement of travelling gear (15).Primary planet pinion (19) is installed on the one-level planet supporting disk (20), and transition gear (13) and one-level planet supporting disk (20) are with splined, the rotation of primary planet pinion (19) passes to transition gear (13), three secondary planetary gears (24) are by realizing the double reduction of rotary planetary reductor with the engagement of transition gear (13), and final secondary planet supporting disk (25) is delivered to output shaft (1) output with splined.

Claims

1, a kind of rotary planetary reductor comprises reducer shell (6), one-level planet supporting disk assembly (14), secondary planet supporting disk assembly (11), output shaft (1), it is characterized in that:

A. one-level planet supporting disk assembly (14) is made up of primary planet pinion (19), one-level planet supporting disk (20), needle bearing (20), needle bearing inner ring (21), gear pad (23) respectively, and primary planet pinion (19) is contained on three pillars of one-level planet supporting disk (20); Primary planet pinion (19) and middle needle bearing (20) and the needle bearing inner ring (21) of being equipped with of pillar; Gear pad (23) is contained in below the one-level every trade star gear (19);

B. secondary planet supporting disk assembly (11) is made up of three secondary planetary gears (24), secondary planet supporting disk (25), needle bearing (26), needle bearing inner ring (27), secondary planet cover plate (28), hexagon socket countersunk flat cap head screw (29) respectively, and secondary planetary gear (24) is contained on four pillars of secondary planet supporting disk (25); Secondary planetary gear (24) and middle needle bearing (26) and the needle bearing inner ring (27) of being equipped with of pillar; And secondary planet cover plate (28) is fixed on the top of four pillars of secondary planet supporting disk (25) by hexagon socket countersunk flat cap head screw (29);

C. excavator main frame motor drive shaft connects with travelling gear (15) by spline; Travelling gear (15) and primary planet pinion (19) engagement, primary planet pinion (19) is installed on the one-level planet supporting disk (14), and one-level planet supporting disk (14) connects with transition gear (13) by spline; Transition gear (13) and secondary planetary gear (24) engagement, secondary planetary gear (24) is installed on the secondary planet supporting disk (25), and secondary planet supporting disk (25) connects with output shaft (1) by spline.