CN214036795U

CN214036795U - Right-angle planetary gear reducer

Info

Publication number: CN214036795U
Application number: CN202023083836.2U
Authority: CN
Inventors: 姚文龙; 江建斌
Original assignee: Zhejiang Sankai Mechanical And Electrical Co ltd
Current assignee: Zhejiang Sankai Mechanical And Electrical Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-08-24
Anticipated expiration: 2030-12-18
Also published as: WO2022127520A1

Abstract

The utility model provides a right angle planetary gear speed reducer belongs to mechanical technical field. It has solved the current speed reducer problem of operation steady inadequately. The right-angle planetary gear reducer comprises a shell, an input shaft vertically arranged in the shell, an output shaft and a sun gear shaft, wherein the output shaft and the sun gear shaft are horizontally arranged in the shell; the top wall of the input shaft is formed with a protruding shaft, the inner wall of the shell is formed with a protruding ring, the protruding shaft is located in the protruding ring, a first bearing is arranged between the protruding shaft and the protruding ring, the inner ring and the outer ring of the first bearing are fixedly connected with the protruding shaft and the protruding ring respectively, and the second bevel gear is located between the first bearing and the double-row angular contact ball bearing. The right-angle planetary gear reducer operates stably.

Description

Right-angle planetary gear reducer

Technical Field

The utility model belongs to the technical field of machinery, a speed reducer, especially a right angle planetary gear speed reducer are related to.

Background

The planetary reducer is an industrial product with wide application, and can reduce the rotating speed of a motor and increase the output torque. The planetary reducer can be used as a matched component for industries such as hoisting, digging, transportation, building and the like.

The existing planetary reducer, such as a right-angle planetary reducer (application number: 2019208832907) disclosed in Chinese patent library, which has two speed ratios and two-way output, comprises an output shaft A, an input shaft, an output shaft B, an intermediate shaft, an output flange A, an intermediate flange B, a rear flange, an output flange B, a primary gear ring, a secondary gear ring, a planet carrier, a right angle body, an input bevel gear, an output bevel gear, a primary sun gear, a secondary sun gear, a primary planet gear and a secondary planet gear; the input shaft is supported on the reducer case by a bearing.

In the speed reducer, the bearing is arranged on the shaft body of the input shaft, the tail end of the input shaft (the end part connected with the input bevel gear) is in a suspended state, and when the input torque is too large, the input shaft can shake to a certain extent, so that the transmission stability and precision are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a right angle planetary gear speed reducer, the technical problem of solution is how to improve the operating stability.

The purpose of the utility model can be realized by the following technical proposal: the right-angle planetary gear reducer comprises a shell, an input shaft vertically arranged in the shell, an output shaft and a sun gear shaft, wherein the output shaft and the sun gear shaft are horizontally arranged in the shell; the integrated into one piece has the protruding axle on the input shaft roof, and integrated into one piece has the bulge loop on the shell inner wall, and bulge loop, protruding axle and input shaft three are coaxial, and the protruding axle is located the bulge loop, is equipped with first bearing between protruding axle and the bulge loop, and the inner circle and the outer lane of first bearing link firmly with protruding axle and bulge loop respectively, and bevel gear two is located between first bearing and the biserial angular contact ball bearing.

The convex shaft which is matched with the shell in a rotating mode through the first bearing is arranged at the top of the input shaft, the end portion, close to the bevel gear II, of the input shaft is well supported, the double-row angular contact ball bearing is used for supporting the shaft body of the input shaft, the double-support effect of the shaft body and the end portion of the input shaft is achieved, the rotating stability of the input shaft is guaranteed, and the transmission precision is improved.

In foretell right angle planetary gear reducer, foretell shell is including all being cylindric left casing and right casing, left casing axis is the level setting, output shaft and sun gear axle all set up in left casing, the input shaft sets up in right casing lower extreme, left casing right-hand member and right casing upper end can dismantle through the bolt and link firmly, be equipped with the gasket coaxial with the output shaft between left casing and the right casing, gasket both ends face sticiss respectively on left casing and right casing terminal surface, and be equipped with the through-hole that supplies the bolt to pass on the gasket. The gasket is clamped between the left shell and the right shell, so that the thickness of the gasket can be changed to ensure the mounting distance of the bevel gear to ensure the meshing smoothness of the bevel gear in actual use, and the running stability is further improved.

In foretell right angle planetary gear reducer, left casing right-hand member integrated into one piece has and is annular guide, and the guide is between gasket and sun gear axle, and guide and right casing upper end hole match, and the guide slides and sets up in right casing upper end, and forms sealedly between guide outer wall and the right casing inner wall. The guide part can guide the installation of the left shell and the right shell and can preliminarily position the gasket so as to effectively improve the smoothness of shell assembly.

In the right-angle planetary gear reducer, the outer side wall of the guide part is provided with the annular groove, the annular groove is internally provided with the sealing ring, and the outer side wall of the sealing ring is abutted against the inner wall of the upper end of the right shell, so that reliable sealing is formed between the guide part and the right shell.

In the right-angle planetary gear reducer, the planetary gear mechanism comprises a sun gear formed at the left end of the sun gear shaft, a gear ring formed on the inner wall of the left shell and a planetary gear meshed between the gear ring and the sun gear, the planetary gear is fixedly connected with the output shaft, the output shaft is rotatably connected with the left shell through a left bearing and a right bearing, and the planetary gear is positioned between the left bearing and the right bearing so as to ensure the transmission stability.

In the right-angle planetary gear reducer, a locking ring coaxial with the output shaft is arranged in the left port of the left shell, the locking ring is sleeved outside the output shaft, the outer wall of the locking ring is fixedly connected with the left shell in a sealing manner, and the inner wall of the locking ring forms a seal with the output shaft through an oil seal; the right end of the locking ring is tightly pressed on the left bearing outer ring, and a shaft shoulder for tightly pressing the right end of the left bearing inner ring is arranged on the output shaft; the right end of the output shaft and the inner wall of the left shell are respectively provided with a first annular abutting surface and a second annular abutting surface which are coaxial with the output shaft, and the left end of the inner ring and the right end of the outer ring of the right bearing are respectively tightly pressed on the first annular abutting surface and the second annular abutting surface.

The locking ring arranged in the left port of the left shell is tightly pressed on the left bearing, so that the output shaft has the tendency of moving rightwards, and the right bearing is always limited on the annular pressing surface I and the annular pressing surface II, so that the axial movement gap of the output shaft is effectively eliminated, the axial shaking in the transmission process is avoided, and the transmission stability and precision are improved.

In the right-angle planetary gear reducer, the outer wall of the locking ring is fixedly connected with the left shell in a sealing mode through a thread structure, so that the locking ring can move to the right by rotating the locking ring, the locking ring is enabled to be pressed on the left bearing more tightly, and the assembly is more convenient and easier.

In the right-angle planetary gear reducer, the locking ring is provided with the jacks which are axially arranged, the jacks are blind holes, the hole openings of the jacks are arranged towards the left, and at least two jacks are uniformly distributed along the circumferential direction of the locking ring. The jack is used for rotating the locking ring with the cooperation of instrument, like this in the actual product, can effectively reduce the length of locking ring outside the shell, makes whole structure comparatively compact.

As another scheme, in the right-angle planetary gear reducer, the shape and size of the outer wall of the locking ring are matched with the inner wall of the left port of the left shell, and the outer wall of the locking ring is tightly and fixedly connected with the left shell.

In the right-angle planetary gear reducer, the sun gear shaft and the sun gear are of an integrated structure, and the maximum torsional rigidity and zero backlash power transmission at high input rotation speed are ensured.

Compared with the prior art, the right-angle planetary gear reducer has the following advantages:

1. the convex shaft which is matched with the shell in a rotating mode through the first bearing is arranged at the top of the input shaft, the end portion, close to the bevel gear II, of the input shaft is well supported, the double-row angular contact ball bearing is used for supporting the shaft body of the input shaft, the double-support effect of the shaft body and the end portion of the input shaft is achieved, the rotating stability of the input shaft is guaranteed, and the transmission precision is improved.

2. The gasket is clamped between the left shell and the right shell, so that the thickness of the gasket can be changed to ensure the mounting distance of the bevel gear to ensure the meshing smoothness of the bevel gear in actual use, and the running stability is further improved.

3. The locking ring arranged in the left port of the left shell is tightly pressed on the left bearing, so that the output shaft has the tendency of moving rightwards, and the right bearing is always limited on the annular pressing surface I and the annular pressing surface II, so that the axial movement gap of the output shaft is effectively eliminated, the axial shaking in the transmission process is avoided, and the transmission stability and precision are improved.

Drawings

Fig. 1 is a schematic structural view of a right-angle planetary gear reducer.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.

Fig. 4 is an enlarged schematic view of the structure at C in fig. 1.

In the figure, 1, a housing; 1a, a left shell; 1a1, guide; 1a2, ring gear; 1a3 and a second annular abutting surface; 1b, a right shell; 1b1, convex ring; 1c, a bolt; 1d, a gasket; 2. an input shaft; 2a, a convex shaft; 3. an output shaft; 3a, a first annular abutting surface; 4. a sun gear shaft; 4a, a sun gear; 5. a first bevel gear; 6. a second bevel gear; 7. a seal ring; 8. a double row angular contact ball bearing; 9. a planet wheel; 10. a left bearing; 11. a right bearing; 12. locking a ring; 12a, a jack; 13. oil sealing; 14. a first bearing.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, the right-angle planetary gear reducer includes a housing 1, an input shaft 2 vertically disposed in the housing 1, and an output shaft 3 and a sun gear shaft 4 both horizontally disposed in the housing 1. Wherein the sun gear shaft 4 and the output shaft 3 are coaxially arranged, and the sun gear shaft 4 is located between the output shaft 3 and the input shaft 2. The left end of a sun gear shaft 4 is connected with the output shaft 3 through a planetary gear mechanism, a first bevel gear 5 is arranged at the right end of the sun gear shaft 4, a second bevel gear 6 matched with the first bevel gear 5 is arranged at the upper end of the input shaft 2, and the first bevel gear 5 is meshed with the second bevel gear 6.

In particular, the present invention relates to a method for producing,

the shell 1 is structured as follows:

as shown in fig. 1 and 3, the housing 1 includes a left housing 1a and a right housing 1b each having a cylindrical shape, and an axis of the left housing 1a is horizontally arranged. As shown in fig. 1, the output shaft 3 and the sun gear shaft 4 are both arranged in the left housing 1a, and the middle part of the sun gear shaft 4 is rotatably connected with the left housing 1a through a bearing; the input shaft 2 is arranged in the lower end of the right housing 1 b; the right end of the left shell 1a and the upper end of the right shell 1b are detachably fixedly connected through a bolt 1c, a gasket 1d coaxial with the output shaft 3 is arranged between the left shell 1a and the right shell 1b, two end faces of the gasket 1d are respectively pressed on the end faces of the left shell 1a and the right shell 1b, and a through hole for the bolt 1c to pass through is formed in the gasket 1 d. The gasket 1d is clamped between the left shell 1a and the right shell 1b, so that in actual use, the thickness of the gasket 1d can be changed to ensure the installation distance of the bevel gears so as to ensure the meshing smoothness of the bevel gears, and the running stability is further improved. In this embodiment, at least two bolts 1c are distributed along the circumference of the left housing 1a, and the number of the through holes is the same as that of the bolts 1c and the positions thereof are in one-to-one correspondence.

To explain further, the right end of the left housing 1a is integrally formed with a guide portion 1a1 in a ring shape, the guide portion 1a1 is between the washer 1d and the sun gear shaft 4, the guide portion 1a1 is matched with the inner hole at the upper end of the right housing 1b, the guide portion 1a1 is slidably disposed in the upper end of the right housing 1b, and a seal is formed between the outer wall of the guide portion 1a1 and the inner wall of the right housing 1 b. The guide portion 1a1 can guide the installation of the left casing 1a and the right casing 1b and preliminarily position the gasket 1d, so that the smoothness of the assembly of the housing 1 is effectively improved. In the present embodiment, the sealing between the guide portion 1a1 and the right housing 1b is as follows: the outer side wall of the guide part 1a1 is provided with an annular groove which is coaxial with the guide part 1a1, a sealing ring 7 is arranged in the annular groove, and the outer side wall of the sealing ring 7 is abutted against the inner wall of the upper end of the right shell 1b, so that reliable sealing is formed between the guide part 1a1 and the right shell 1 b.

The input shaft 2 is mounted as follows:

as shown in fig. 1 and 2, the lower end of the input shaft 2 is rotatably connected with the right housing 1b through a double-row angular contact ball bearing 8; the top wall of the input shaft 2 is integrally formed with a protruding shaft 2a, the inner wall of the right shell 1b is integrally formed with a protruding ring 1b1, the protruding ring 1b1, the protruding shaft 2a and the input shaft 2 are coaxial, the protruding shaft 2a is located in the protruding ring 1b1, a first bearing 14 is arranged between the protruding shaft 2a and the protruding ring 1b1, the inner ring and the outer ring of the first bearing 14 are fixedly connected with the protruding shaft 2a and the protruding ring 1b1 respectively, and the bevel gear two 6 is located between the first bearing 14 and the double-row angular contact ball bearing 8. The protruding shaft 2a which is matched with the shell 1 in a rotating mode through the first bearing 14 is arranged at the top of the input shaft 2, the end portion, close to the second bevel gear 6, of the input shaft 2 is well supported, the double-row angular contact ball bearing 8 is used for supporting the shaft body of the input shaft 2, the double-support effect of the shaft body and the end portion of the input shaft 2 is achieved, the rotating stability of the input shaft 2 is guaranteed, and the transmission precision is improved.

The planetary gear mechanism is of an existing structure, and the structure of the planetary gear mechanism is as follows:

the planetary gear mechanism comprises a sun gear 4a formed on the left end of the sun gear shaft 4, a gear ring 1a2 formed on the inner wall of the left housing 1a, and planet gears 9 engaged between the gear ring 1a2 and the sun gear 4a, wherein the planet gears 9 are fixedly connected with the output shaft 3. In an actual product, the sun gear shaft 4 and the sun gear 4a are of an integrated structure, so that the maximum torsional rigidity and zero backlash power transmission at high input rotation speed are ensured; three planet wheels 9 are uniformly distributed along the circumferential direction of the output shaft 3; the planet wheel 9 is connected with the input shaft 2 through a pin shaft, and the planet wheel 9 and the pin shaft are connected through a circle of roller pins arranged between the planet wheel and the pin shaft.

The output shaft 3 is mounted as follows:

as shown in fig. 1 and 4, the output shaft 3 is rotatably connected with the left housing 1a through a left bearing 10 and a right bearing 11, and the planet wheel 9 is arranged between the left bearing 10 and the right bearing 11 to ensure the smoothness of the transmission. As shown in fig. 1, a locking ring 12 coaxial with the output shaft 3 is arranged in the left port of the left housing 1a, the locking ring 12 is sleeved outside the output shaft 3, the outer wall of the locking ring 12 is fixedly connected with the left housing 1a in a sealing manner, the inner wall of the locking ring 12 forms a seal with the output shaft 3 through an oil seal 13, at this time, the oil seal 13 is sleeved outside the output shaft 3, and the inner side wall and the outer side wall of the oil seal 13 respectively abut against the outer wall of the output shaft 3 and the inner wall of the locking ring 12; the right end of the locking ring 12 is tightly pressed on the outer ring of the left bearing 10, and a shaft shoulder for tightly pressing the right end of the inner ring of the left bearing 10 is arranged on the output shaft 3; the right end of the output shaft 3 and the inner wall of the left shell 1a are respectively provided with a first annular abutting surface 3a and a second annular abutting surface 1a3 which are coaxial with the output shaft 3, and the left end of the inner ring and the right end of the outer ring of the right bearing 11 are respectively tightly pressed on the first annular abutting surface 3a and the second annular abutting surface 1a 3. The locking ring 12 arranged in the left port of the left shell 1a is tightly pressed on the left bearing 10, so that the output shaft 3 has the tendency of moving rightwards, the right bearing 11 is always limited on the first annular abutting surface 3a and the second annular abutting surface 1a3, the axial movement gap of the output shaft 3 is effectively eliminated, the axial shaking in the transmission process is avoided, and the transmission stability and precision are improved.

The locking ring 12 is mounted as follows:

the outer wall of the locking ring 12 is fixedly connected with the left shell 1a in a sealing mode through a thread structure, so that the locking ring 12 can be rotated to move rightwards, the locking ring 12 is enabled to be pressed on the left bearing 10 more tightly, and assembly is more convenient and easier. Further, the locking ring 12 is provided with axially arranged insertion holes 12a, the insertion holes 12a are blind holes, the openings of the insertion holes 12a are arranged towards the left, and at least two insertion holes 12a are uniformly distributed along the circumferential direction of the locking ring 12. The insertion hole 12a is used to rotate the locking ring 12 in cooperation with a tool, so that the length of the locking ring 12 outside the casing 1 can be effectively reduced in an actual product, resulting in a compact overall structure.

Example two

The second embodiment is basically the same as the first embodiment in structure and principle, and the difference lies in: the shape and the size of the outer wall of the locking ring 12 are matched with the inner wall of the left port of the left shell 1a, and the outer wall of the locking ring 12 is tightly matched and fixedly connected with the left shell 1 a.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The right-angle planetary gear reducer comprises a shell (1), an input shaft (2) vertically arranged in the shell (1), an output shaft (3) and a sun gear shaft (4) which are horizontally arranged in the shell (1), wherein the sun gear shaft (4) is positioned between the output shaft (3) and the input shaft (2), the left end of the sun gear shaft (4) is connected with the output shaft (3) through a planetary gear mechanism, the right end of the sun gear shaft (4) is provided with a first bevel gear (5), and the upper end of the input shaft (2) is provided with a second bevel gear (6) meshed with the first bevel gear (5), and the right-angle planetary gear reducer is characterized in that the lower end of the input shaft (2) is rotatably connected with the shell (1) through a double-; a protruding shaft (2a) is integrally formed on the top wall of an input shaft (2), a protruding ring (1b1) is integrally formed on the inner wall of a shell (1), the protruding ring (1b1), the protruding shaft (2a) and the input shaft (2) are coaxial, the protruding shaft (2a) is located in the protruding ring (1b1), a first bearing (14) is arranged between the protruding shaft (2a) and the protruding ring (1b1), the inner ring and the outer ring of the first bearing (14) are fixedly connected with the protruding shaft (2a) and the protruding ring (1b1) respectively, and a second bevel gear (6) is located between the first bearing (14) and a double-row angular contact ball bearing (8).

2. The right-angle planetary gear reducer according to claim 1, wherein the housing (1) includes a left casing (1a) and a right casing (1b) both having a cylindrical shape, an axis of the left casing (1a) is horizontally disposed, the output shaft (3) and the sun gear shaft (4) are disposed in the left casing (1a), the input shaft (2) is disposed in a lower end of the right casing (1b), a right end of the left casing (1a) and an upper end of the right casing (1b) are detachably and fixedly connected by a bolt (1c), a spacer (1d) coaxial with the output shaft (3) is disposed between the left casing (1a) and the right casing (1b), two end faces of the spacer (1d) are respectively pressed against end faces of the left casing (1a) and the right casing (1b), and a through hole for the bolt (1c) to pass through is disposed on the spacer (1 d).

3. The right-angle planetary gear reducer according to claim 2, wherein the right end of the left housing (1a) is integrally formed with a guide part (1a1) in an annular shape, the guide part (1a1) is arranged between the gasket (1d) and the sun gear shaft (4), the guide part (1a1) is matched with an inner hole at the upper end of the right housing (1b), the guide part (1a1) is slidably arranged in the upper end of the right housing (1b), and a seal is formed between the outer wall of the guide part (1a1) and the inner wall of the right housing (1 b).

4. The right-angle planetary gear reducer according to claim 3, wherein an annular groove is formed in the outer side wall of the guide portion (1a1), a seal ring (7) is arranged in the annular groove, and the outer side wall of the seal ring (7) abuts against the inner wall of the upper end of the right housing (1 b).

5. The right-angle planetary gear reducer according to claim 2, characterized in that the planetary gear mechanism comprises a sun gear (4a) formed on the left end of the sun gear shaft (4), a ring gear (1a2) formed on the inner wall of the left housing (1a), and planet gears (9) engaged between the ring gear (1a2) and the sun gear (4a), the planet gears (9) are fixedly connected with the output shaft (3), the output shaft (3) is rotationally connected with the left housing (1a) through a left bearing (10) and a right bearing (11), and the planet gears (9) are located between the left bearing (10) and the right bearing (11).

6. The right-angle planetary gear reducer according to claim 5, wherein a locking ring (12) coaxial with the output shaft (3) is arranged in a left port of the left housing (1a), the locking ring (12) is sleeved outside the output shaft (3), the outer wall of the locking ring (12) is fixedly connected with the left housing (1a) in a sealing manner, and the inner wall of the locking ring (12) forms a seal with the output shaft (3) through an oil seal (13); the right end of the locking ring (12) is tightly pressed on the outer ring of the left bearing (10), and a shaft shoulder for tightly pressing the right end of the inner ring of the left bearing (10) is arranged on the output shaft (3); the right end of the output shaft (3) and the inner wall of the left shell (1a) are respectively provided with a first annular abutting surface (3a) and a second annular abutting surface (1a3) which are coaxial with the output shaft (3), and the left end of the inner ring and the right end of the outer ring of the right bearing (11) are respectively tightly pressed on the first annular abutting surface (3a) and the second annular abutting surface (1a 3).

7. The right-angle planetary gear reducer according to claim 6, wherein the outer wall of the locking ring (12) is sealingly connected with the left housing (1a) by a thread structure.

8. The right-angle planetary gear reducer according to claim 7, wherein the locking ring (12) has axially disposed insertion holes (12a), the insertion holes (12a) are blind holes, the openings of the insertion holes (12a) are disposed toward the left, and at least two insertion holes (12a) are uniformly distributed along the circumferential direction of the locking ring (12).

9. The right-angle planetary gear reducer according to claim 6, wherein the shape and the size of the outer wall of the locking ring (12) are matched with the inner wall of the left port of the left shell (1a), and the outer wall of the locking ring (12) is tightly and fixedly connected with the left shell (1 a).

10. The right-angle planetary gear reducer according to claim 1, wherein the sun gear shaft (4) and the sun gear (4a) are of an integral structure.