阅读说明：本技术 一种错齿行星减速机 (Staggered-tooth planetary reducer ) 是由 王怡科 于 2020-04-08 设计创作，主要内容包括：本发明涉及一种错齿行星减速机,包括机壳；一级行星架固定于机壳内一端,一级行星架背离机壳一端的一面装有多个一级行星齿轮；二级行星架可转动的装于机壳内,二级行星架靠近机壳一端的一面装有多个二级行星齿轮,一级行星齿轮和二级行星齿轮的尺寸和齿数不同；内齿轮可转动的装于外壳中；输入轴同轴设于内齿轮中,二级行星架的旋转中心与输入轴的轴线重合,输入轴上沿其轴向同轴设有尺寸和齿数均不同的第一输入轴齿轮和第二输入轴齿轮,一级行星齿轮分别与第一输入轴齿轮及内齿轮啮合,二级行星齿轮分别与第二输入轴齿轮及内齿轮啮合；输出法兰与输入轴同轴设置,且通过同轴设置的圆柱与二级行星架连接固定。优点：机体体积小、减速比大。(The invention relates to a staggered-tooth planetary reducer, which comprises a shell; the primary planet carrier is fixed at one end in the machine shell, and one surface of the primary planet carrier, which is far away from one end of the machine shell, is provided with a plurality of primary planet gears; the second-stage planet carrier is rotatably arranged in the machine shell, one surface of the second-stage planet carrier, which is close to one end of the machine shell, is provided with a plurality of second-stage planet gears, and the sizes and the tooth numbers of the first-stage planet gears and the second-stage planet gears are different; the internal gear is rotatably arranged in the shell; the input shaft is coaxially arranged in the internal gear, the rotation center of the secondary planet carrier is superposed with the axis of the input shaft, a first input shaft gear and a second input shaft gear which are different in size and tooth number are coaxially arranged on the input shaft along the axial direction of the input shaft, the primary planet gear is respectively meshed with the first input shaft gear and the internal gear, and the secondary planet gear is respectively meshed with the second input shaft gear and the internal gear; the output flange and the input shaft are coaxially arranged and are fixedly connected with the secondary planet carrier through a coaxially arranged cylinder. The advantages are that: the machine body has small volume and large reduction ratio.)

1. An offset planetary reducer, comprising:

a housing (1);

the primary planet carrier (2) is positioned in the machine shell (1) and fixed at one end of the machine shell (1), and one surface of the primary planet carrier (2) departing from one end of the machine shell (1) is provided with a plurality of rotatable primary planet gears (21);

the secondary planet carrier (3) is rotatably assembled on the inner wall of the machine shell (1), one surface, close to one end of the machine shell (1), of the secondary planet carrier (3) is provided with a plurality of rotatable secondary planet gears (31), and the size and the number of teeth of the primary planet gears (21) are different from those of the secondary planet gears (31);

an internal gear (4) rotatably mounted in the housing (12);

the input shaft (5) is coaxially arranged in the inner gear (4), two ends of the input shaft are respectively and rotatably connected with the primary planet carrier (2) and the secondary planet carrier (3), and the rotation center of the secondary planet carrier (3) is coincided with the axis of the input shaft (5); a first input shaft gear (51) and a second input shaft gear (52) are coaxially arranged on the input shaft (5) along the axial direction of the input shaft, the primary planetary gear (21) is respectively meshed with the first input shaft gear (51) and the internal gear (4), and the secondary planetary gear (31) is respectively meshed with the second input shaft gear (52) and the internal gear (4); the size and the number of teeth of first input shaft gear (51) and second input shaft gear (52) all differ, and the size and the number of teeth of first order planetary gear (21) and second grade planetary gear (31) all differ, and, the size and the number of teeth of the internal tooth of internal gear (4) are unanimous, or the size and the number of teeth of first input shaft gear (51) and second input shaft gear (52) are the same, and the size and the number of teeth of first order planetary gear (21) and second grade planetary gear (31) all differ, and, internal gear (4) inboard with the number of teeth and the size of the internal tooth of the round that first order planetary gear (21) and second grade planetary gear (31) mesh respectively all differ, perhaps again the size and the number of teeth of first input shaft gear (51) and second input shaft gear (52) differ, just the size and the number of teeth of first order planetary gear (21) and second grade planetary gear (31) all differ, the number of teeth and the size of a circle of internal teeth, which are meshed with the primary planetary gear (21) and the secondary planetary gear (31) respectively, on the inner side of the internal gear (4) are different;

and the output flange (6) is coaxially arranged with the input shaft (5) and is fixedly connected with the secondary planet carrier (3) through a cylinder (61) which is coaxially arranged with the output flange and penetrates through the other end of the machine shell (1).

2. The staggered teeth planetary reducer of claim 1, wherein; casing (1) includes cylindric shell (12) and assembles respectively and is fixed in base (11) and cover (13) at shell (12) both ends, one-level planet carrier (2) are fixed in on base (11), second grade planet carrier (3) and internal gear (4) rotatable assembly respectively in on shell (12) inner wall.

3. The staggered-tooth planetary reducer according to claim 2, wherein: the internal gear (4) is rotatably assembled on the inner wall of the shell (12) through an internal gear bearing (41) coaxially assembled outside the internal gear.

4. The staggered-tooth planetary reducer according to claim 2, wherein: the base (11) and the shell (12) and the cover (13) are fixedly connected through a plurality of bolts respectively.

5. The staggered-tooth planetary reducer according to claim 2, wherein: the middle parts of the first-stage planet carrier (2) and the second-stage planet carrier (3) are respectively provided with an assembly hole, an input shaft bearing (53) is respectively assembled in the assembly holes, and two ends of the input shaft (5) are respectively coaxially assembled and connected with the two input shaft bearings (53).

6. The staggered-tooth planetary reducer according to claim 2, wherein: the secondary planet carrier (3) is rotationally connected with the inner wall of the shell (12) through a planet carrier bearing (7) assembled outside the secondary planet carrier.

7. The staggered-tooth planetary reducer according to claim 2, wherein: the utility model discloses a cover, including cover (13), cylinder (61) and cylinder (8), cover (13) middle part is equipped with and is equipped with the round hole that is equipped with flange bearing (8), this flange bearing (8) and round hole are passed to cylinder (61) to through this flange bearing (8) with cover (13) rotate to be connected.

8. The staggered-tooth planetary reducer according to any one of claims 2 to 7, wherein: the size and the number of teeth of the first input shaft gear (51) are larger than those of the second input shaft gear (52), and the size and the number of teeth of the first input shaft gear (21) are smaller than those of the second input shaft gear (31), or the size and the number of teeth of the first input shaft gear (51) are smaller than those of the second input shaft gear (52), and the size and the number of teeth of the first input shaft gear (21) are larger than those of the second input shaft gear (31); or the number of teeth and the size of a circle of internal teeth meshed with the primary planetary gear (21) on the inner side of the internal gear (4) are smaller than the number of teeth and the size of a circle of internal teeth meshed with the secondary planetary gear (31), and the size and the number of teeth of the primary planetary gear (21) are smaller than the size and the number of teeth of the secondary planetary gear (31); or internal gear (4) inboard with the number of teeth and the size of the round internal tooth of one-level planetary gear (21) meshing all are greater than the number of teeth and the size of the round internal tooth with second grade planetary gear (31) meshing, just the size and the number of teeth of one-level planetary gear (21) are greater than the size and the number of teeth of second grade planetary gear (31).

Technical Field

The invention relates to speed reducer equipment, in particular to a staggered-tooth planetary speed reducer.

Background

In the speed reducer family, the staggered tooth planetary reducer is with its small, transmission efficiency is high, and the speed reduction scope is wide, a great deal of advantages such as precision height, and by the wide application, however, when the power of transmission is great, need increase the size of each part of speed reducer to improve the reduction ratio, like this, will increase the volume and the weight of speed reducer certainly, can't install in small-size equipment, be not conform to the miniaturized development trend of current equipment.

In view of the above, how to reduce the size of the planetary reduction gear set under the condition of obtaining a larger reduction ratio is an urgent problem to be solved by those skilled in the art.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a staggered-tooth planetary reducer, which effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows:

an offset planetary reducer comprising:

a housing; the primary planet carrier is positioned in the shell and fixed at one end of the shell, and one surface of the primary planet carrier, which is deviated from one end of the shell, is provided with a plurality of rotatable primary planet gears; the secondary planet carrier is rotatably assembled on the inner wall of the machine shell, one surface of the secondary planet carrier, which is close to one end of the machine shell, is provided with a plurality of rotatable secondary planet gears, and the size and the tooth number of the primary planet gears are different from those of the secondary planet gears; an internal gear rotatably fitted in the housing; the input shaft is coaxially arranged in the internal gear, two ends of the input shaft are respectively and rotationally connected with the primary planet carrier and the secondary planet carrier, and the rotation center of the secondary planet carrier is superposed with the axis of the input shaft; the input shaft is coaxially provided with a first input shaft gear and a second input shaft gear along the axial direction, the primary planetary gear is respectively meshed with the first input shaft gear and the internal gear, and the secondary planetary gear is respectively meshed with the second input shaft gear and the internal gear; the sizes and the numbers of teeth of the first input shaft gear and the second input shaft gear are different, the sizes and the numbers of teeth of the first-stage planetary gear and the second-stage planetary gear are different, and the sizes and the numbers of teeth of the inner gear are consistent, or the first input shaft gear and the second input shaft gear have the same size and number of teeth, and the first-stage planetary gear and the second-stage planetary gear have different sizes and numbers of teeth, and the inner side of the internal gear is respectively engaged with the primary planetary gear and the secondary planetary gear, the number of teeth and the size of a circle of internal teeth are different, or the size and the number of teeth of the first input shaft gear and the second input shaft gear are different, and the size and the number of teeth of the primary planetary gear and the secondary planetary gear are different, the inner side of the internal gear is respectively meshed with the primary planet gear and the secondary planet gear, and the number of teeth and the size of a circle of internal teeth are different; and the output flange is coaxially arranged with the input shaft and is fixedly connected with the secondary planet carrier through a cylinder which is coaxially arranged with the output flange and penetrates through the other end of the shell.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the casing comprises a cylindrical shell, a base and a cover, wherein the base and the cover are respectively assembled and fixed at two ends of the shell, the primary planet carrier is fixed on the base, and the secondary planet carrier and the internal gear are respectively and rotatably assembled on the inner wall of the shell.

Further, the internal gear is rotatably mounted on the inner wall of the housing through an internal gear bearing coaxially mounted thereon.

Furthermore, the base and the shell and the cover are respectively connected and fixed through a plurality of bolts.

Furthermore, the middle parts of the first-stage planet carrier and the second-stage planet carrier are respectively provided with an assembly hole, an input shaft bearing is respectively assembled in the assembly holes, and two ends of the input shaft are respectively coaxially assembled and connected with the two input shaft bearings.

Further, the second-stage planet carrier is rotatably connected with the inner wall of the housing through a planet carrier bearing assembled outside the second-stage planet carrier.

Furthermore, the middle part of the cover is provided with a round hole assembled with a bearing, and the cylinder passes through the bearing and the through hole and is rotationally connected with the cover through the bearing.

Further, the size and the number of teeth of the first input shaft gear are larger than those of the second input shaft gear, and the size and the number of teeth of the first-stage planetary gear are smaller than those of the second-stage planetary gear, or the size and the number of teeth of the first input shaft gear are smaller than those of the second input shaft gear, and the size and the number of teeth of the first-stage planetary gear are larger than those of the second-stage planetary gear; or the number of teeth and the size of a circle of internal teeth meshed with the primary planetary gear on the inner side of the internal gear are smaller than the number of teeth and the size of a circle of internal teeth meshed with the secondary planetary gear, and the size and the number of teeth of the primary planetary gear are smaller than the size and the number of teeth of the secondary planetary gear; or the number of teeth and the size of the inner side of the internal gear and the inner tooth of the circle meshed with the primary planetary gear are both larger than the number of teeth and the size of the inner tooth of the circle meshed with the secondary planetary gear, and the size and the number of teeth of the primary planetary gear are larger than the size and the number of teeth of the secondary planetary gear.

The invention has the beneficial effects that: reasonable design, flexible use, small body volume and large reduction ratio.

Drawings

FIG. 1 is an exploded view of the staggered teeth planetary reducer of the present invention;

fig. 2 is a schematic view of the transmission principle of the input shaft, the primary planetary gear and the secondary planetary gear of the staggered-tooth planetary reducer.

In the drawings, the components represented by the respective reference numerals are listed below:

1. casing, 2, one-level planet carrier, 3, second grade planet carrier, 4, internal gear, 5, input shaft, 6, output flange, 7, planet carrier bearing, 8, flange bearing, 11, base, 12, shell, 13, cover, 21, one-level planetary gear, 31, second grade planetary gear, 41, internal gear bearing, 51, first input shaft gear, 52, second input shaft gear, 53, input shaft bearing, 61, cylinder.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.