阅读说明：本技术 一种分体式人字齿轮及其行星传动装置 (Split herringbone gear and planetary transmission device thereof ) 是由 王淑妍 郭栋祥 袁卓俊 于 2020-05-22 设计创作，主要内容包括：本发明涉及一种分体式人字齿轮及其行星传动装置,属于机械传动技术领域；包括径向分节拼装式人字齿内齿轮、轴向分离式人字齿外齿轮、具有均载效应的人字齿行星齿轮和行星架；径向分节拼装式人字齿内齿轮上设有人字齿行星齿轮,不同的人字齿行星齿轮通过一个行星架连接；轴向分离式人字齿外齿轮与人字齿行星齿轮啮合连接。本发明通过相位可调的人字齿轮外齿轮、人字齿轮内齿轮和人字齿轮行星齿轮之间的相互配合,实现了刚度波动可控、行星轮均载情况良好的人字齿轮行星传动装置,解决了目前人字齿齿轮加工难度大、安装困难及刚度波动较大的问题,为矿用、船用和航空用大功率应用场合提供了一种有效传动结构形式。(The invention relates to a split herringbone gear and a planetary transmission device thereof, belonging to the technical field of mechanical transmission; the planetary gear set comprises a radial segmented assembled herringbone tooth inner gear, an axial separated herringbone tooth outer gear, a herringbone tooth planetary gear with a load balancing effect and a planetary carrier; the radial section assembling type herringbone tooth inner gear is provided with a herringbone tooth planetary gear, and different herringbone tooth planetary gears are connected through a planetary carrier; the axial separation type herringbone tooth outer gear is in meshed connection with the herringbone tooth planetary gear. According to the herringbone gear planetary transmission device, the herringbone gear outer gear, the herringbone gear inner gear and the herringbone gear planetary gear which are adjustable in phase are matched with one another, the herringbone gear planetary transmission device with controllable rigidity fluctuation and good planetary gear uniform load condition is realized, the problems of high processing difficulty, mounting difficulty and large rigidity fluctuation of the existing herringbone gear are solved, and an effective transmission structural form is provided for high-power application occasions for mining, marine and aviation.)

1. A split type herringbone gear and planetary transmission device thereof are characterized in that: the planetary gear set comprises a radial segmented assembled herringbone tooth inner gear, an axial separated herringbone tooth outer gear, a herringbone tooth planetary gear with a load balancing effect and a planetary carrier; the radial section assembling type herringbone tooth internal gear is provided with a herringbone tooth planetary gear, and different herringbone tooth planetary gears are connected through the planetary carrier; the axial separation type herringbone tooth outer gear is in meshed connection with the herringbone tooth planetary gear.

2. The split herringbone gear and the planetary transmission device thereof according to claim 1, wherein: the axially separated herringbone tooth outer gear comprises a left-handed outer gear, a right-handed outer gear and an annular gasket; the left-handed external gear and the right-handed external gear are provided with the same central axis, and the left-handed external gear and the right-handed external gear are connected through end faces; an arc-shaped arc boss is arranged on the end face of the connection of the left-handed external gear and the right-handed external gear; the end face of the right-handed outer gear connected with the left-handed outer gear is provided with an arc-shaped arc hole corresponding to the arc-shaped arc boss; the arc length of the arc-shaped arc hole is set to be larger than that of the arc-shaped arc boss, and an annular gasket is arranged at the intersection of the arc-shaped arc boss arranged on the end face of the left-handed outer gear and the end face of the left-handed outer gear.

3. The split herringbone gear and the planetary transmission device thereof as claimed in claim 2, wherein: the radial segmented assembling herringbone tooth inner gear comprises a left-handed tooth section, a right-handed tooth section and an inverted T-shaped circumferential positioning ring; an annular bulge is arranged in the middle of the outer circumference of the annular reverse T-shaped circumferential positioning ring, and an annular boss I and an annular boss II are arranged on two sides of the bulge respectively; the arc-shaped left-handed tooth joint is connected with the annular boss I arranged on one side of the protrusion through an arc-shaped groove arranged on one side of the inner arc; the arc-shaped right-handed tooth section is connected with a second annular boss arranged on the other side of the protrusion through an arc-shaped groove arranged on one side of the inner arc; a first counter bore is formed in the circular arc end face, connected with one side of the annular protrusion, of the left-handed tooth section, and a first threaded blind hole, used for connecting the left-handed tooth section with the protrusion, is formed in one side of the annular protrusion and corresponds to the first counter bore; a second counter bore is formed in the circular arc end face, connected with the other side of the annular protrusion, of the right-handed tooth section, and a second threaded blind hole, used for connecting the right-handed tooth section and the protrusion, is formed in the other side of the annular protrusion and corresponds to the second counter bore; the left-handed gear section is assembled and connected through the annular boss I to form a circular left-handed internal gear, and the right-handed gear section is assembled and connected through the annular boss II to form a circular right-handed internal gear.

4. A split herringbone gear and its planetary transmission device as claimed in claim 3, wherein: the herringbone-tooth planetary gear with the load balancing effect comprises a left-handed helical gear, a right-handed helical gear, a cap-shaped sleeve, four fan-shaped blocks and four screws; the hat-shaped sleeve is connected with the right-handed helical gear through the left-handed helical gear; four fan-shaped blocks and four screws are arranged between the left helical gear and the right helical gear; the cap-shaped sleeve is provided with a circular base and a cylindrical shaft body, and the shaft body with the same circle center as the base opening is vertically arranged at the central circular opening of the base; the shaft body penetrates through central axes of the left-handed helical gear and the right-handed helical gear.

5. The split herringbone gear and the planetary transmission device thereof according to claim 4, wherein: the end face, connected with the cap-shaped sleeve base, of the left-handed helical gear is provided with a first cross sliding groove, and the cap-shaped sleeve base is provided with a first cross protruding block matched with the first cross sliding groove.

6. The split herringbone gear and the planetary transmission device thereof according to claim 5, wherein: the other side end face of the left-hand helical gear, which corresponds to the end face provided with the first cross-shaped sliding chute, is provided with a circular groove with the same central axis as the left-hand helical gear, and the circumference of the outer side of the circular groove is uniformly provided with circular through holes along the radial direction; four fan-shaped blocks are arranged in the circular groove and are arranged on a virtual circular plane which is the same with the left-handed helical gear in the central axis; a threaded blind hole III corresponding to the circular through hole arranged in the circular groove is arranged on the circular arc ring surface on the outer side of the fan-shaped block; the circular through hole arranged on the circular groove is connected with the threaded blind hole tee joints arranged on the four fan-shaped blocks through four screws respectively; and a second cross lug is arranged on the end face, connected with the left-handed helical gear, of the right-handed helical gear, the second cross lug and the four fan-shaped blocks are arranged on the same circular plane, and each lug of the second cross lug is arranged between the two fan-shaped blocks.

7. The split herringbone gear and the planetary transmission device thereof according to claim 6, wherein: the planet carrier is a triangular planet carrier with a cross boss.

8. The split herringbone gear and the planetary transmission device thereof according to claim 7, wherein: and 3 herringbone-tooth planetary gears are arranged on the radial segmented assembled herringbone-tooth internal gear.

9. The split herringbone gear and the planetary transmission device thereof according to claim 8, wherein: the triangular base of the triangular planet carrier is provided with three shafts which are perpendicular to the surface of the base in the same direction at equal intervals near three included angles, and the three shafts are respectively arranged in a central through hole of a cylindrical shaft body of a cap-shaped sleeve arranged on the herringbone-tooth planetary gear in a penetrating manner; annular steps are arranged on the outer circumferences of the three shafts and are connected with the inner wall of a cylindrical shaft body center through hole of the cap-shaped sleeve through a bearing.

Technical Field

The invention relates to a split herringbone gear and a planetary transmission device thereof, belonging to the technical field of mechanical transmission.

Background

Herringbone gear transmissions are widely used in transmission systems for heavy machinery, in particular in high-power speed reducers for mining, marine and aviation, because they can operate at high load capacities without axial thrust. The existing herringbone gear is generally of an integral structure and is structurally characterized in that one half of the tooth width of the cylindrical gear is set as right-handed teeth, and the other half of the tooth width of the cylindrical gear is set as left-handed teeth. The main problems of the structure with the gear teeth in bilateral symmetry at present are as follows: 1. the processing is particularly difficult, especially for the herringbone tooth inner gear with larger size; 2. the mounting difficulty is high, and particularly in a herringbone gear planetary gear train, the problems that a sun gear, a planet gear and an inner gear ring are difficult to mount and even cannot be mounted exist; 3. the completely symmetrical structure leads to superposition of peaks and valleys of meshing rigidity at the left side and the right side, and the rigidity fluctuation is large and the vibration noise is large. In order to break through the overall structure form, the split herringbone gear structure and the meshing performance are considered, and further optimization is an important direction and a research hotspot in the field of herringbone gear structure design and research. The literature search of the prior art finds that: (1) chinese patent, publication No.: CN103867687A, announcement date: 2014.06.18, patent name: combined type segmented herringbone annular gears. The herringbone gear ring is radially segmented, the axial left-hand gear teeth and the axial right-hand gear teeth are not integrally separated, and the multiple sections of herringbone gear rings are connected through the multiple sections of positioning rings to form the integral herringbone gear ring, so that the processing and assembling difficulty is reduced. (2) Chinese patent, publication No.: CN105736644A, announcement date: 2016.07.06, patent name: a staggered-tooth phase-adjustable planetary herringbone gear reducer is characterized in that gears of the herringbone gear reducer are split, positioning grooves and positioning blocks are arranged between the split gears, and staggered-tooth phases can be adjusted. (3) Chinese patent, publication No.: CN101793308A, published: 2010.08.04, patent name: herringbone tooth planetary reducer. The herringbone-tooth inner gear ring adopted in the patent is formed by splicing at least two sections of gear ring sections along the circumferential direction, and the splicing surface is positioned at the crossed part of oblique teeth in two directions in the herringbone teeth, so that the problem that the sun gear, the planet gear and the inner gear ring are difficult to install is solved. The above patent documents adopt different structural designs from the modes of radial and axial sectioning and the like to solve the problems of difficult processing, difficult installation and large rigidity fluctuation of herringbone gears.

Disclosure of Invention

The invention aims to solve the technical problems of high processing difficulty, difficult installation and large rigidity fluctuation of the existing herringbone gear.

In order to solve the problems, the technical scheme adopted by the invention is to provide a split herringbone gear and a planetary transmission device thereof, wherein the split herringbone gear comprises a radial segmented assembled herringbone-tooth inner gear, an axial split herringbone-tooth outer gear, a herringbone-tooth planetary gear with a load-sharing effect and a planet carrier; the radial section assembling type herringbone tooth internal gear is provided with a herringbone tooth planetary gear, and different herringbone tooth planetary gears are connected through the planetary carrier; the axial separation type herringbone tooth outer gear is in meshed connection with the herringbone tooth planetary gear.

Preferably, the axially-separated herringbone-tooth external gear comprises a left-handed external gear, a right-handed external gear and an annular gasket; the left-handed external gear and the right-handed external gear are provided with the same central axis, and the left-handed external gear and the right-handed external gear are connected through end faces; an arc-shaped arc boss is arranged on the end face of the connection of the left-handed external gear and the right-handed external gear; the end face of the right-handed outer gear connected with the left-handed outer gear is provided with an arc-shaped arc hole corresponding to the arc-shaped arc boss; the arc length of the arc-shaped arc hole is set to be larger than that of the arc-shaped arc boss, and an annular gasket is arranged at the intersection of the arc-shaped arc boss arranged on the end face of the left-handed outer gear and the end face of the left-handed outer gear.

Preferably, the radial segmented assembling herringbone tooth inner gear comprises a left-handed tooth section, a right-handed tooth section and an inverted T-shaped circumferential positioning ring; an annular bulge is arranged in the middle of the outer circumference of the annular reverse T-shaped circumferential positioning ring, and an annular boss I and an annular boss II are arranged on two sides of the bulge respectively; the arc-shaped left-handed tooth joint is connected with the annular boss I arranged on one side of the protrusion through an arc-shaped groove arranged on one side of the inner arc; the arc-shaped right-handed tooth section is connected with a second annular boss arranged on the other side of the protrusion through an arc-shaped groove arranged on one side of the inner arc; a first counter bore is formed in the circular arc end face, connected with one side of the annular protrusion, of the left-handed tooth section, and a first threaded blind hole, used for connecting the left-handed tooth section with the protrusion, is formed in one side of the annular protrusion and corresponds to the first counter bore; a second counter bore is formed in the circular arc end face, connected with the other side of the annular protrusion, of the right-handed tooth section, and a second threaded blind hole, used for connecting the right-handed tooth section and the protrusion, is formed in the other side of the annular protrusion and corresponds to the second counter bore; the left-handed gear section is assembled and connected through the annular boss I to form a circular left-handed internal gear, and the right-handed gear section is assembled and connected through the annular boss II to form a circular right-handed internal gear.

Preferably, the herringbone-tooth planetary gear with the load-sharing effect comprises a left-handed helical gear, a right-handed helical gear, a hat-shaped sleeve, four fan-shaped blocks and four screws; the hat-shaped sleeve is connected with the right-handed helical gear through the left-handed helical gear; four fan-shaped blocks and four screws are arranged between the left helical gear and the right helical gear; the cap-shaped sleeve is provided with a circular base and a cylindrical shaft body, and the shaft body with the same circle center as the base opening is vertically arranged at the central circular opening of the base; the shaft body penetrates through central axes of the left-handed helical gear and the right-handed helical gear.

Preferably, a first cross sliding groove is formed in the end face, connected with the cap-shaped sleeve base, of the left-handed helical gear, and a first cross protruding block matched with the first cross sliding groove is formed in the cap-shaped sleeve base.

Preferably, the other side end face of the left-handed helical gear, which corresponds to the end face provided with the first cross sliding groove, is provided with a circular groove with the same central axis as the left-handed helical gear, and the circumference of the outer side of the circular groove is uniformly provided with circular through holes along the radial direction; four fan-shaped blocks are arranged in the circular groove and are arranged on a virtual circular plane which is the same with the left-handed helical gear in the central axis; a threaded blind hole III corresponding to the circular through hole arranged in the circular groove is arranged on the circular arc ring surface on the outer side of the fan-shaped block; the circular through hole arranged on the circular groove is connected with the threaded blind hole tee joints arranged on the four fan-shaped blocks through four screws respectively; and a second cross lug is arranged on the end face, connected with the left-handed helical gear, of the right-handed helical gear, the second cross lug and the four fan-shaped blocks are arranged on the same circular plane, and each lug of the second cross lug is arranged between the two fan-shaped blocks.

Preferably, the planet carrier is a triangular planet carrier with a cross boss.

Preferably, the radial segmented assembling type herringbone tooth internal gear is provided with 3 herringbone tooth planetary gears.

Preferably, the triangular base of the triangular planet carrier is provided with three shafts which are perpendicular to the surface of the base in the same direction at equal intervals near three included angles, and the three shafts are respectively arranged in a central through hole of a cylindrical shaft body of a cap-shaped sleeve arranged on the herringbone-tooth planetary gear in a penetrating manner; annular steps are arranged on the outer circumferences of the three shafts and are connected with the inner wall of a cylindrical shaft body center through hole of the cap-shaped sleeve through a bearing.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides the assembled herringbone tooth structure with adjustable phase and automatic uniform loading of the planet wheels and the planet transmission device thereof, which reduce the processing and installation difficulty and can adjust the phase according to the rigidity fluctuation.

(1) The left and right-handed gear circumferential sections are arranged on the inverted T-shaped circumferential positioning ring to form the herringbone-tooth inner gear which is adjustable in phase and separable in axial direction and radial direction, the problem that the inner gear is difficult to machine and install is solved, and meanwhile the problem that the dynamic rigidity fluctuation is large due to the fact that the phase is adjustable can be reduced.

(2) The herringbone-tooth planetary gear adopts the cross groove movable connection which can automatically distribute load and is formed between the left-handed gear and the cap-shaped sleeve as well as between the left-handed gear and the right-handed helical gear, and the radial position of the left-handed gear and the right-handed gear can be changed according to the load distribution condition, so that the problem of uneven load distribution of a plurality of planetary gears is solved.

(3) According to the herringbone gear planetary transmission device, the herringbone gear outer gear, the herringbone gear inner gear and the herringbone gear planetary gear are matched with one another, so that the herringbone gear planetary transmission device with controllable rigidity fluctuation and good planetary gear uniform load condition is realized, the problem of axial thrust can be avoided under the condition of large bearing capacity, and an effective transmission structural form is provided for high-power application occasions for mining, ship and aviation.

Drawings

FIG. 1 is a structural view of an axially split type herringbone tooth outer gear of a split type herringbone gear and a planetary transmission device thereof according to the present invention;

FIG. 2 is a view of the construction of the split herringbone gear and its radial segmented assembled herringbone internal gear of the planetary transmission device of the present invention;

FIG. 3 is a structural view of the movable coupling between the cap-shaped sleeve and the left-hand gear of the herringbone-tooth planetary gear of the split herringbone gear and the planetary transmission device thereof of the present invention;

FIG. 4 is a structural view of the movable connection between the right-hand gear and the left-hand gear of the herringbone-tooth planetary gear of the split herringbone gear and the planetary transmission device thereof;

FIG. 5 is an assembly view of a split herringbone gear and herringbone gear planets of a planetary transmission in accordance with the present invention;

fig. 6 is a structural view of a herringbone-tooth planetary gear transmission device of a split herringbone gear and a planetary gear transmission device thereof according to the present invention.

Reference numerals: 1. a left-handed outer gear; 2. a right-handed external gear; 3. an arc-shaped circular arc hole; 4. an arc-shaped arc boss; 5. an annular gasket; 6. a left-handed gear segment; 7. a right-handed gear section; 8. an inverted T-shaped circumferential positioning ring; 9. a first annular boss; 10. a second annular boss; 11. a first arc-shaped groove; 12. a second arc-shaped groove; 13. a left-handed inner gear; 14. a right-handed internal gear; 15. a first counter bore; 16. a first threaded blind hole; 17. a left-handed helical gear; 18. a right-handed helical gear; 19. a cap-shaped sleeve; 20. a sector block; 21. a screw; 22. a first cross-shaped sliding chute; 23. a circular groove; 24. a circular ring table-top; 25. a circular through hole; 26. a third threaded blind hole; 28. a first cross bump; 29. a second cross bump; 30. a triangular planet carrier; 31. a shaft; 32. a step; 33. a bearing; 111. an axially separated herringbone tooth outer gear; 222. the radial segmental assembling herringbone tooth inner gear; 333. a herringbone-tooth planetary gear with a load-sharing effect; . .

Detailed Description

In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:

as shown in fig. 1 to 6, the present invention provides a split herringbone gear and a planetary transmission device thereof, comprising a radial segmented assembled herringbone tooth internal gear 222, an axial split herringbone tooth external gear 111, a herringbone tooth planetary gear 333 with load-sharing effect and a planet carrier; the radial section assembling type herringbone tooth internal gear 222 is provided with a herringbone tooth planetary gear 333, and different herringbone tooth planetary gears 333 are connected through a planet carrier; the axially split herringbone tooth outer gear 111 is in meshing connection with a herringbone tooth planetary gear 333. The axially-separated herringbone-tooth external gear 111 comprises a left-handed external gear 1, a right-handed external gear 2 and an annular gasket 5; the left-handed external gear 1 and the right-handed external gear 2 are provided with the same central axis, and the left-handed external gear 1 and the right-handed external gear 2 are connected through end faces; an arc-shaped arc boss 4 is arranged on the end surface of the connection of the left-handed external gear 1 and the right-handed external gear 2; the end surface of the right-handed outer gear 2 connected with the left-handed outer gear 1 is provided with an arc-shaped arc hole 3 corresponding to the arc-shaped arc boss 4; the arc length of the arc-shaped arc hole 3 is set to be larger than that of the arc-shaped arc boss 4, and the intersection of the arc-shaped arc boss 4 arranged on the end face of the left-handed outer gear 1 and the end face of the left-handed outer gear 1 is provided with an annular gasket 5. The radial segmented assembling herringbone tooth inner gear 222 comprises a left-handed tooth section 6, a right-handed tooth section 7 and an inverted T-shaped circumferential positioning ring 8; an annular bulge is arranged in the middle of the outer circumference of the annular reverse T-shaped circumferential positioning ring 8, and a first annular boss 9 and a second annular boss 10 are arranged on two sides of the bulge respectively; the arc-shaped left-handed tooth section 6 is connected with an annular boss I9 arranged on one side of the protrusion through an arc-shaped groove I11 arranged on one side of the inner arc; the arc-shaped right-handed gear section 7 is connected with a second annular boss 10 arranged on the other side of the protrusion through a second arc-shaped groove 12 arranged on one side of the inner arc; a counter bore I15 is arranged on the circular arc end face of the left-handed tooth section 6 connected with one side of the annular protrusion, and a threaded blind hole I16 used for connecting the left-handed tooth section 6 and the protrusion is arranged on one side of the annular protrusion corresponding to the counter bore I15; a counter bore II is arranged on the arc end surface of the right-handed tooth section 7 connected with the other side of the annular protrusion, and a threaded blind hole II for connecting the right-handed tooth section and the protrusion is arranged on the other side of the annular protrusion corresponding to the counter bore II; the left-handed gear segments 6 are connected in an assembling mode through a first annular boss 9 to form a circular left-handed internal gear 13, and the right-handed gear segments are connected in an assembling mode through a second annular boss 10 to form a circular right-handed internal gear 14. The herringbone-tooth planetary gear 333 with the load-sharing effect comprises a left helical gear 17, a right helical gear 18, a hat-shaped sleeve 19, four segments 20 and four screws 21; the hat-shaped sleeve 19 is connected with the right-handed helical gear 18 through the left-handed helical gear 17; four fan-shaped blocks 20 and four screws 21 are arranged between the left helical gear 17 and the right helical gear 18; the cap-shaped sleeve 19 is provided with a circular base and a cylindrical shaft body, and the shaft body with the same circle center as the base opening is vertically arranged at the central circular opening of the base; the shaft body passes through the central axis of the left-handed helical gear 17 and the right-handed helical gear 18. The end face of the left-handed helical gear 17 connected with the base of the cap-shaped sleeve 19 is provided with a first cross sliding groove 22, and the base of the cap-shaped sleeve 19 is provided with a first cross bump 28 matched with the first cross sliding groove 22. The other side end face of the left-handed helical gear 17, which corresponds to the end face provided with the first cross sliding chute 22, is provided with a circular groove 23 which has the same central axis as the left-handed helical gear 17, and the circumference of the outer side of the circular groove 23 is uniformly provided with circular through holes 25 along the radial direction; four fan-shaped blocks 20 are arranged in the circular groove 23, and the four fan-shaped blocks 20 are arranged on a virtual circular plane which is the same with the left-handed helical gear 17 in the central axis; a third threaded blind hole 26 corresponding to the circular through hole 25 arranged in the circular groove 23 is arranged on the circular arc ring surface on the outer side of the fan-shaped block 20; a circular through hole 25 arranged on the circular groove 23 is respectively connected with a threaded blind hole III 26 arranged on the four fan-shaped blocks 20 through four screws 21; the end face of the right-handed helical gear 18 connected with the left-handed helical gear 17 is provided with a second cross-shaped lug 29, the second cross-shaped lug 29 and the four fan-shaped blocks 20 are arranged on the same circular plane, and each lug of the second cross-shaped lug 29 is arranged between the two fan-shaped blocks. The planet carrier is a triangular planet carrier 30 with a cross boss, and 3 herringbone-tooth planet gears 333 are arranged on the radial segmented assembled herringbone-tooth internal gear 222; the triangular base of the triangular planet carrier 30 is provided with three shafts 31 which are perpendicular to the base surface at equal intervals and in the same direction near the three included angles, and the three shafts 31 are respectively arranged in the central through hole of the cylindrical shaft body of the cap-shaped sleeve 19 arranged on the herringbone-tooth planetary gear 333 in a penetrating way; the three shafts 31 are provided with annular steps 32 on the outer circumference, and the annular steps 32 are connected with the inner wall of the cylindrical shaft body central through hole of the cap type sleeve 19 through bearings 33.

The invention is characterized in that the phase-adjustable assembled herringbone tooth structure with the automatic load balancing of the planet wheels and the planet transmission device thereof comprise an axial separated herringbone tooth outer gear 111, a radial segmented assembled herringbone tooth inner gear 222, a herringbone tooth planet gear 333 with the load balancing effect and a triangular planet carrier 30 with a cross boss as shown in figure 6.

As shown in fig. 1, the axially-separated herringbone-tooth external gear 111 is composed of a left-handed external gear 1, a right-handed external gear 2 and an annular gasket 5, an arc-shaped arc boss 4 on the left end face of the left-handed external gear 1 is installed in an arc-shaped arc hole 3 on the right end face of the right-handed external gear 2, and the arc length of the arc-shaped arc hole 3 is longer than that of the arc-shaped arc boss 4, so that the left-handed external gear 1 and the right-handed external gear 2 form relative circumferential rotation connection within a certain range, and the herringbone-tooth external gear 111 with adjustable phase difference of the left-handed external.

As shown in fig. 2, the radially segmented herringbone-tooth internal gear 222 is composed of a plurality of left-handed tooth segments 6, a plurality of right-handed tooth segments 7, and an inverted T-shaped circumferential positioning ring 8. The left end and the right end of the inverted T-shaped circumferential positioning ring 8 are provided with annular bosses 9 and 10, the left-handed gear section 6 is installed on a first left annular boss 9 of the inverted T-shaped circumferential positioning ring 8 through a first arc-shaped groove 11, the right-handed gear section 7 is installed on a second right annular boss 10 of the inverted T-shaped circumferential positioning ring 8 through a second arc-shaped groove 12 on the left end face of the right-handed gear section to form a left-handed inner gear 13 and a right-handed inner gear 14 which are installed on the inverted T-shaped circumferential positioning ring 8 and can rotate relatively, after the left-handed inner gear 13 and the right-handed inner gear 14 are rotated to find proper phases, fixed connection is realized through a first counter bore 15 on the gear section and a first threaded blind hole 16 on the inverted T-shaped circumferential positioning ring.

As shown in fig. 3, 4 and 5, the double helical planetary gear 333 with the load sharing effect is composed of a left helical gear 17, a right helical gear 18, a hat shaped sleeve 19, four segments 20 and four screws 21. A first cross sliding groove 22 is formed in the left end face of the left-handed helical gear 17, a circular groove 23 is formed in the right end face of the left-handed helical gear 17, a plurality of circular through holes 25 are uniformly distributed in an outer circular table surface 24 of the groove, a third threaded blind hole 26 is formed in the outer circular surface of the sector block 20 arranged in the circular groove 23 in the right end face of the left-handed helical gear 17, and the third threaded blind hole is fixedly connected with the left-handed helical gear 17 through a screw 21 after the third threaded blind hole is rotated to a proper position in the circumferential direction according to the phase difference between; a cross convex block I28 is arranged on the right step of the cap-shaped sleeve 19 and is matched with a cross sliding groove I22 on the left end face of the left-handed helical gear 17 to form cross groove movable connection; the left end face of the right-handed helical gear 18 is provided with a second cross lug 29 which is matched with a cross sliding groove formed by the left-handed gear 17 and the fan-shaped block 20 to form a cross groove movable connection, and the cap-shaped sleeve 19 is movably connected with the left-handed and right-handed gears 17 and 18 through the cross groove, so that the rotation centers of the left-handed helical gear 17 and the right-handed helical gear 18 can keep a movable space within a certain range, and the load balancing adjustment between the planet gears in the planetary transmission device is realized.

The triangular planet carrier 30 is provided with three shafts 31, steps 32 are arranged on the shafts, bearings 33 are arranged on the steps 32, and hat-shaped sleeves 19 of herringbone-tooth planetary gears are sleeved on the bearings 33.

The specific working process of the invention is as follows:

as shown in fig. 6, power is input from the axially split type herringbone tooth external gear 111 formed in accordance with the phase adjustment combination, and is meshed with the herringbone tooth planetary gear 333 having the load equalizing effect formed in accordance with the phase adjustment combination, the herringbone tooth planetary gear 333 is also meshed with the radially segmented type herringbone tooth internal gear 222 which is formed in accordance with the phase adjustment combination and is stationary at the same time, and finally, the revolving motion of the herringbone tooth planetary gear 333 is output from the triangular carrier 30. In the operation process, three symmetrical herringbone-tooth planet wheels 333 are mounted on the triangular planet carrier 30, and the central positions of the left-handed gears 17 and 18 of the planet wheels can be respectively adjusted through the cross sliding groove connection formed between the left-handed gear 17 and the cap-shaped sleeve 19 of the herringbone-tooth planet wheels 333 and between the right-handed gear 18 of the planet wheels and the left-handed gear 17 of the planet wheels according to the load condition, namely the central positions of the six right-handed or left-handed helical gears 17 and 18 of the herringbone-tooth planet wheels 333 are formed in a flexible adjustment mode, so that the automatic adjustment of the load is realized. .

While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.