阅读说明：本技术 一种三级传动斜齿行星齿式减速器 (Three-stage transmission helical gear planetary gear type speed reducer ) 是由 崔文征 王胜 王兰菊 于 2019-10-24 设计创作，主要内容包括：本发明公开了一种三级传动斜齿行星齿式减速器,包括箱盖、中间箱体、外箱体、输入轴、第二转轴、花键轴、行星轮和行星架,输入轴输出端与箱盖转动连接,输入轴输出端设置有斜齿；第二转轴输入端与箱盖转动连接,第二转轴输入端固定连接有第一齿轮,第一齿轮为斜齿轮,第一齿轮与输入轴输出端的斜齿啮合,第二转轴输出端设置有斜齿且与中间箱体转动连接；花键轴套设在输入轴上且转动连接在中间箱体上,花键轴输入端固定连接有第二齿轮,第二齿轮与第二转轴输出端的斜齿啮合,花键轴输出端设置有直齿且与行星轮啮合,行星轮与行星架啮合；本发明能够在提供较大传动扭矩的情况下,减小减速器的体积,能够满足现有技术领域的要求。(The invention discloses a three-level transmission helical gear planetary gear type speed reducer which comprises a box cover, a middle box body, an outer box body, an input shaft, a second rotating shaft, a spline shaft, a planet wheel and a planet carrier, wherein the output end of the input shaft is rotatably connected with the box cover; the input end of the second rotating shaft is rotationally connected with the box cover, the input end of the second rotating shaft is fixedly connected with a first gear, the first gear is a helical gear, the first gear is meshed with helical teeth at the output end of the input shaft, and the output end of the second rotating shaft is provided with helical teeth and is rotationally connected with the middle box body; the spline shaft is sleeved on the input shaft and is rotationally connected to the middle box body, the input end of the spline shaft is fixedly connected with a second gear, the second gear is meshed with helical teeth at the output end of the second rotating shaft, the output end of the spline shaft is provided with straight teeth and is meshed with the planet gear, and the planet gear is meshed with the planet carrier; the invention can reduce the volume of the reducer under the condition of providing larger transmission torque, and can meet the requirements of the prior art field.)

1. The utility model provides a three-level transmission skewed tooth planet tooth formula reduction gear, includes case lid, middle box and outer box, its characterized in that: the box cover is characterized by also comprising an input shaft, a second rotating shaft, a spline shaft, a planet wheel and a planet carrier, wherein the input shaft is a bevel gear shaft, the input end of the input shaft is rotatably connected with the planet carrier through a first bearing, the output end of the input shaft is rotatably connected with the box cover through a second bearing, and the output end of the input shaft is provided with bevel teeth; the second rotating shaft is a bevel gear shaft, the input end of the second rotating shaft is rotatably connected with the box cover through a third bearing, the input end of the second rotating shaft is fixedly connected with a first gear, the first gear is a bevel gear, the first gear is meshed with a bevel gear at the output end of the input shaft, the output end of the second rotating shaft is provided with a bevel gear, and the second rotating shaft is rotatably connected with the middle box body through a fourth bearing; the spline shaft is sleeved on the input shaft and is rotationally connected to the middle box body through a fifth bearing and a sixth bearing, the input end of the spline shaft is fixedly connected with a second gear, the second gear is a helical gear, the second gear is meshed with helical teeth at the output end of the second rotating shaft, and the output end of the spline shaft is provided with straight teeth; the outer box body is fixedly connected with a plurality of pin shafts, the planetary gears correspond to the pin shafts one by one, the planetary gears are rotationally connected to the pin shafts, straight teeth at the output end of the spline shaft are meshed with the planetary gears, the planetary gears are meshed with the planetary carrier, and the output end of the planetary carrier is rotationally connected with the outer box body through a seventh bearing; the outer box body and the box cover are fixedly connected to two ends of the middle box body through bolts respectively.

2. The three-stage drive helical-tooth planetary gear-type reducer according to claim 1, characterized in that: the spline shaft is characterized in that an interval shaft sleeve is sleeved on the input end of the spline shaft, a spline shaft sleeve is sleeved on the output end of the spline shaft, a first wear-resistant shaft sleeve is sleeved on the spline shaft sleeve, and the first wear-resistant shaft sleeve is located between the spline shaft sleeve and the planet carrier.

3. The three-stage drive helical-tooth planetary gear-type reducer according to claim 1, characterized in that: the outer box with be provided with first oil blanket between the planet carrier, first oil blanket is located seventh bearing inboard, be provided with the second oil blanket between planet carrier and the input shaft, the second oil blanket is located the first bearing outside, is provided with first circlip for the hole between second oil blanket and the first bearing, and first circlip for the hole is laminated with first bearing.

4. The three-stage drive helical-tooth planetary gear-type reducer according to claim 1, characterized in that: the planet carrier is sleeved with a shaft sleeve, the shaft sleeve is located between the planet carrier and the outer box body, the shaft sleeve is sleeved with a first shaft elastic check ring, and the first shaft elastic check ring is attached to the shaft sleeve.

5. The three-stage drive helical-tooth planetary gear-type reducer according to claim 1, characterized in that: and the input end of the spline shaft is sleeved with a second-shaft elastic check ring, and the second-shaft elastic check ring is positioned on the inner side of the fifth bearing and is attached to the fifth bearing.

6. The three-stage drive helical-tooth planetary gear-type reducer according to claim 1, characterized in that: the first bearing, the second bearing, the third bearing, the fifth bearing, the sixth bearing and the seventh bearing are deep groove ball bearings, and the fourth bearing is a cylindrical roller bearing.

7. The three-stage drive helical-tooth planetary gear-type reducer according to claim 1, characterized in that: the pin shaft is sleeved with a second wear-resistant shaft sleeve, and the second wear-resistant shaft sleeve is located between the pin shaft and the planet wheel.

8. The three-stage drive helical-tooth planetary gear-type reducer according to claim 1, characterized in that: the planet wheel with the round pin axle is 3.

Technical Field

The invention relates to a planetary speed reducer, in particular to a three-stage transmission helical gear planetary gear type speed reducer.

Background

The planetary reducer is a power transmission mechanism, can utilize the pinion on the input mechanism to mesh with the bull gear on the output mechanism to reach the purpose of speed reduction, slows down the number of revolutions of the motor to the required number of revolutions, and obtains great torque, along with the continuous rapid development of the planetary reducer industry, it is widely used in the mechanical equipment fields such as chemical industry, light industry, pharmacy, metallurgy, mine, papermaking, electronic instrument, glass, environmental protection. The planetary speed reducer is expected to be small in size and large in transmission torque in various fields, but in the existing planetary speed reducer, the three-stage transmission speed reducer with large transmission torque is mainly in a three-stage planetary gear structure, the space occupied by the planetary gear is large, so that the whole speed reducer is large in size and cannot meet the requirements of some fields, and the first-stage speed reducer body with small size is small in transmission torque and cannot meet the requirements of some fields.

Disclosure of Invention

The invention aims to provide a three-stage transmission helical-tooth planetary gear type speed reducer, which is used for solving the problems that the planetary speed reducer in the prior art cannot simultaneously realize small volume and large transmission torque.

In order to achieve the purpose, the invention adopts the following technical scheme: a three-level transmission helical gear planetary gear type speed reducer comprises a box cover, a middle box body, an outer box body, an input shaft, a second rotating shaft, a spline shaft, a planet wheel and a planet carrier, wherein the input shaft is a helical gear shaft; the second rotating shaft is a bevel gear shaft, the input end of the second rotating shaft is rotatably connected with the box cover through a third bearing, the input end of the second rotating shaft is fixedly connected with a first gear, the first gear is a bevel gear, the first gear is meshed with a bevel gear at the output end of the input shaft, the output end of the second rotating shaft is provided with a bevel gear, and the second rotating shaft is rotatably connected with the middle box body through a fourth bearing; the spline shaft is sleeved on the input shaft and is rotationally connected to the middle box body through a fifth bearing and a sixth bearing, the input end of the spline shaft is fixedly connected with a second gear, the second gear is a helical gear, the second gear is meshed with helical teeth at the output end of the second rotating shaft, and the output end of the spline shaft is provided with straight teeth; the outer box body is fixedly connected with a plurality of pin shafts, the planetary gears correspond to the pin shafts one by one, the planetary gears are rotationally connected to the pin shafts, straight teeth at the output end of the spline shaft are meshed with the planetary gears, the planetary gears are meshed with the planetary carrier, and the output end of the planetary carrier is rotationally connected with the outer box body through a seventh bearing; the outer box body and the box cover are fixedly connected to two ends of the middle box body through bolts respectively.

Optionally, a spacing shaft sleeve is sleeved on the spline shaft input end, a spline shaft sleeve is sleeved on the spline shaft output end, a first wear-resistant shaft sleeve is sleeved on the spline shaft sleeve, and the first wear-resistant shaft sleeve is located between the spline shaft sleeve and the planet carrier.

Optionally, a first oil seal is arranged between the outer box and the planet carrier, the first oil seal is located on the inner side of the seventh bearing, a second oil seal is arranged between the planet carrier and the input shaft, the second oil seal is located on the outer side of the first bearing, a first hole circlip is arranged between the second oil seal and the first bearing, and the first hole circlip is attached to the first bearing.

Optionally, a shaft sleeve is sleeved on the planet carrier and located between the planet carrier and the outer box body, a first shaft elastic check ring is sleeved on the shaft sleeve, and the first shaft elastic check ring is attached to the shaft sleeve.

Optionally, a second circlip is sleeved on the input end of the spline shaft, and the second circlip is located on the inner side of the fifth bearing and attached to the fifth bearing.

Optionally, the first bearing, the second bearing, the third bearing, the fifth bearing, the sixth bearing and the seventh bearing are all deep groove ball bearings, and the fourth bearing is a cylindrical roller bearing.

Optionally, a second wear-resistant shaft sleeve is sleeved on the pin shaft and located between the pin shaft and the planet wheel.

Optionally, the number of the planet wheels and the number of the pin shafts are 3.

The three-stage transmission helical gear planetary gear type speed reducer has the following advantages;

(1) the transmission between the helical teeth at the output end of the input shaft and the first gear is first-stage transmission, the transmission between the helical teeth at the output end of the second rotating shaft and the second gear is second-stage transmission, the transmission between the straight teeth at the output end of the spline shaft and the planet gear is third-stage transmission, and the effect of increasing transmission torque can be realized by adopting a helical tooth meshing mode and a three-stage transmission structure in the first-stage transmission and the second-stage transmission.

(2) The first-stage transmission and the second-stage transmission both adopt a transmission mode of meshing a gear and a gear shaft, and compared with a planetary gear transmission mode with a large size, the size of the whole equipment is greatly reduced.

(3) The use of each shaft sleeve can reduce the abrasion degree of other important parts and prolong the service life of the equipment.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Detailed Description

In the present embodiment, the left positional relationship corresponds to the inner side of the claims, and the right positional relationship corresponds to the outer side of the claims.

As shown in fig. 1, a three-stage transmission helical-tooth planetary gear type speed reducer comprises a case cover 1, a middle case 2, an outer case 3, an input shaft 4, a second rotating shaft 9, a spline shaft 13, a planetary gear 22 and a planetary carrier 25, wherein the input shaft 4 is a helical gear shaft, the input end of the input shaft 4 is rotatably connected with the planetary carrier 25 through a first bearing 5, a second oil seal 7 is arranged between the input shaft 4 and the planetary carrier 25, the second oil seal 7 is positioned at the right side of the first bearing 5, a first hole elastic check ring 6 is arranged between the second oil seal 7 and the first bearing 5, the first hole elastic check ring 6 is attached to the first bearing, the first hole elastic check ring 6 can prevent the first bearing 5 from moving rightwards, the output end of the input shaft 4 is rotatably connected with the case cover 1 through a second bearing 8, and helical teeth are arranged at the output end of; the second rotating shaft 9 is a bevel gear shaft, the input end of the second rotating shaft 9 is rotatably connected with the box cover 1 through a third bearing 10, the input end of the second rotating shaft 9 is fixedly connected with a first gear 11, the first gear 11 is a helical gear, the first gear 11 is meshed with a bevel gear at the output end of the input shaft 4, the output end of the second rotating shaft 9 is provided with a bevel gear, and the second rotating shaft 9 is rotatably connected with the middle box body 2 through a fourth bearing 12.

A spline shaft 13 is sleeved on the input shaft 4, the spline shaft 13 is rotatably connected on the middle box body 2 through a fifth bearing 14 and a sixth bearing 15, the input end of the spline shaft 13 is fixedly connected with a second gear 17, the second gear 17 is a helical gear, the second gear 17 is meshed with helical teeth at the output end of the second rotating shaft 9, the input end of the spline shaft 13 is sleeved with a second elastic check ring 18, the second elastic check ring 18 is positioned at the left side of the fifth bearing 14 and is attached to the fifth bearing 14, the second elastic check ring 18 has the functions of positioning and stopping, the installation of the fifth bearing 14 is convenient, the fifth bearing 14 can be prevented from transversely moving, the input end of the spline shaft 13 is sleeved with a spacing shaft sleeve 19, the spacing shaft sleeve 19 can reduce the abrasion between the spline shaft 13 and the middle box body 2, the output end of the spline shaft 13 is provided with straight teeth, and the output end of, the spline shaft sleeve 20 is sleeved with a first wear-resistant shaft sleeve 21, the spline shaft sleeve 20 and the first wear-resistant shaft sleeve 21 are located between the spline shaft 13 and the planet carrier 25, and the two shaft sleeves can reduce the wear between the spline shaft 13 and the planet carrier 25.

The outer box body 3 is fixedly connected with three pin shafts 23, the planet gears 22 correspond to the pin shafts 23 one by one, the planet gears 22 are rotatably connected to the pin shafts 23, the pin shafts 23 are sleeved with second wear-resistant shaft sleeves 24, the second wear-resistant shaft sleeves 24 can reduce the wear of the planet gears 22, straight teeth at the output end of the spline shaft 13 are meshed with the planet gears 22, the planet gears 22 are meshed with planet carriers 25, the output end of the planet carriers 25 is rotatably connected with the outer box body 3 through seventh bearings 26, first oil seals 27 are arranged between the outer box body 3 and the planet carriers 25, the first oil seals 27 are arranged on the left side of the seventh bearings 26, the planet carriers 25 are sleeved with shaft sleeves 28 and first shaft elastic check rings 29, the first shaft elastic check rings 29 are arranged on the right side of the shaft sleeves 28 and are attached to the shaft sleeves 28, the shaft sleeves 28 are arranged on the right side of the seventh, the first bearing 5, the second bearing 8, the third bearing 10, the fifth bearing 14, the sixth bearing 15 and the seventh bearing 26 are all deep groove ball bearings, and the fourth bearing 12 is a cylindrical roller bearing.

When the three-stage transmission mechanism works, an input motor drives an input shaft 4 to rotate, the input shaft 4 drives a first gear 11 to rotate, the first gear 11 drives a second rotating shaft 9 to rotate, the second rotating shaft 9 drives a second gear 17 to rotate, the second gear 17 drives a spline shaft 13 to rotate, the spline shaft 13 drives a planet gear 22 to rotate, the planet gear 22 drives a planet carrier 25 to rotate, and the output end of the planet carrier 25 is connected with external equipment, wherein the first-stage transmission is that the input shaft 4 drives the first gear 11 to rotate, the second-stage transmission is that the second rotating shaft 9 drives the second gear 13 to rotate, the third-stage transmission is that the spline shaft 13 drives the planet gear 22 and the planet carrier 25 to rotate, the transmission torque is increased by the three-stage transmission, the transmission mode that helical teeth are meshed with helical gears is adopted by the first-stage transmission and the second-stage transmission, the transmission torque can also be, the running noise is low; the first-stage transmission and the second-stage transmission adopt a transmission mode that a gear is meshed with a gear shaft, so that the occupied space of parts is greatly saved, the size of the whole speed reducer is reduced, the output end of the planet carrier 25 is provided with a spline, and the spline is used for being matched with a winding drum or other equipment to transmit power to the winding drum or other equipment.

The embodiments described above are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any inventive work belong to the protection scope of the present invention.