CN2177839Y - Ring-rotation planet-gear speed reducer - Google Patents

Abstract

The utility model discloses a ring-rotation planet-gear speed reducer which belongs to the technical field of a speed reducing machine, mainly comprising a worm screw, a planet wheel set, a stator and a rotating arm, wherein, the worm screw is provided with a spiral groove and a plurality of planet wheels are arranged around the worm screw, and the circumference of the planet wheel is provided with an engaged bulge which is engaged with the spiral groove of the worm screw on one hand, and on the other hand, the engaged bulge is engaged with the groove of the stator; the planetary wheels are installed on the rotating arm through a wheel shaft. The utility model has the advantages of novel structure and reasonable design, and compared with an existing gear speed reducer, the utility model has the advantages of higher transmission ratio, compact structure, small size, stable operation, low noise, high transmission efficiency and using reversibility.

Description

Ring-rotation planet-gear speed reducer

The utility model relates to the speed reducer field, specifically is a kind of ring rotating star gearing speed-reducer.

Existing mechanical gear transmission speed reducer has polytype, such as spur gear speed reducer, worm decelerating machine, planet-gear speed reducer, pinwheel one cycloid speed reducer, integrate and exist volume big, heavy, velocity ratio is low, the cost height, low and the big deficiency that waits of noise of efficient, particularly more outstanding during big speed ratio, though people make every effort to reach dynamical purpose by manufacturing process technology and computerized dynamic analysis that modern material, section emulate the advanced, but with regard to its performance and cost, reached the limit.

The purpose of this utility model just provides a kind of ring rotating star gearing speed-reducer, has higher velocity ratio, compact structure, the characteristics that volume is little, noise is low, transmission efficiency is high.

The technical solution of the utility model is: mainly comprise worm screw, planetary gear set, stator and pivoted arm, wherein worm screw is with spiral chute, be provided with a plurality of planet wheels around worm screw, on the circumference of planet wheel mesh bulge is arranged, spiral chute with worm screw meshes on the one hand, be meshed with the groove of stator on the other hand, planet wheel is contained on the pivoted arm by wheel shaft.

Below in conjunction with embodiment's accompanying drawing the utility model is described in detail.

At first accompanying drawing is described:

Fig. 1 represents the structural drawing of the utility model drive part;

Fig. 2 represents the broken section three-dimensional structure diagram of drive part;

Fig. 3 represents the structural drawing with the planet wheel (12) of garden post projection (8);

Fig. 4 represent to dribble structural drawing of planet wheel (12) of shape projection (8);

Fig. 5 represents the structural drawing of retarder.

In technique scheme, center input (or output) member of the worm screw (6) of band spiral chute (7) for rotating in fixed axis, worm screw (6) a plurality of planet wheels (12) on every side are meshed with spiral chute on the worm screw (6) by the mesh bulge on it (8), planet wheel (12) was both revolved round the sun around worm screw, simultaneously do rotation around wheel shaft again, planet wheel (12) is by stator (10), (14) groove on (9) is meshed dirivig member is assembled together, pivoted arm (4), (15) be the tie-rod that planetary gear set (12) is installed, pivoted arm (4), (15) be connected to an integral body by coupling block (1) and straight pin (2), and the output that rotates in fixed axis (or input) member, according to accompanying drawing 1, shown in 2, worm screw (6) is during as input link, its transmission principle is: driving force rotates in fixed axis it by input shaft (16) to central worm (6), worm screw (6) utilizes its spiral chute (7) that power is passed to each planet wheel (12) in the planetary gear train equably, drive each planet wheel (12) on the one hand around worm screw (6) revolution, simultaneously again around the wheel shaft rotation, because planet wheel (12) is installed in pivoted arm (4), (15) on, the revolution of planet wheel (12) drives pivoted arm (4), (15) rotation, and pivoted arm (4) fuses with output shaft (5), thereby driving force is exported from output shaft (5), and reached the purpose of speed change.

Spiral chute (7) on the worm screw of the present utility model (6) is the circular arc spiral chute, mesh bulge (8) on the planet wheel (12) is spherical or cylindrical, shown in Fig. 3,4, like this, engagement drive performance between worm screw (6) and the planet wheel (12) is reliable, the transmission efficiency height, cylindrical protrusions of the present utility model (8) is a resilient member, hemisphere jut (8) can roll.Stator of the present utility model (10), (14) are assembled together by attachment screw (13) centering for half sheet housing with many spin slots (9), assemble, make, keep in repair all very convenient like this.

4 according to the embodiment shown in the accompanying drawing 5, Fig. 1, driving mechanism shown in Figure 2 are contained in the speed reducer casing (11), on the casing (11) of output shaft (5) side of stretching out, little end cap (3) is housed, on the casing (11) of input shaft (16) side of stretching out big end cap (17) is housed, stator (14) is connected in aggregates with bolt with casing (11) and big end cap (17).Promptly constitute retarder.

The ring rotation planet-gear speed reducer novel structure that the utility model provides, reasonable in design, compare with the existing machinery gear reduction unit and to have following characteristics:

1, higher gearratio is arranged, be generally i=6～240;

2, structure is very compact, and volume is little, and cost is low;

3, running is steady, noise is little;

4, very high transmission efficiency is arranged;

5, has reversibility in the use.

Claims (4)

1, a kind of ring rotating star gearing speed-reducer, mainly comprise worm screw, planetary gear set, stator and pivoted arm, feature of the present utility model is worm screw (a 6) band spiral chute (7), be provided with a plurality of planet wheels (12) around worm screw (6), mesh bulge (8) is arranged on the circumference of planet wheel (12), spiral chute (7) with worm screw (6) meshes on the one hand, is meshed with the groove (9) of stator (10), (14) on the other hand, and planet wheel (12) is contained on pivoted arm (4), (15) by wheel shaft.

2, ring rotating star gearing speed-reducer according to claim 1 is characterized in that the spiral chute (7) on the worm screw (6) is the circular arc spiral chute, and the mesh bulge (8) on the planet wheel (12) is spherical or cylindrical.

3, ring rotating star gearing speed-reducer according to claim 1 is characterized in that stator (10), (14) for half sheet housing with many spin slots (9), are assembled together by attachment screw (13) centering.

4, ring rotating star gearing speed-reducer according to claim 1 is characterized in that cylindrical protrusions (8) is resilient member, and hemisphere jut (8) can roll.

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