CN-224214672-U - Speed reducer

CN224214672UCN 224214672 UCN224214672 UCN 224214672UCN-224214672-U

Abstract

The utility model relates to the technical field of speed reducers, in particular to a speed reducer which comprises an integrated gear ring, an input flange, an output shaft, a first inner shell, a second inner shell, a plurality of first transmission units and a second transmission unit, wherein each first transmission unit comprises a planet wheel, a pin shaft, a plurality of rolling needles and two first end face rolling needle bearings, and a plurality of first grooves are formed in each of the first inner shell and the second inner shell. When the planet wheel rotates, replace first inner shell and second inner shell through two terminal surface bearing, both ends contact around with the planet wheel, and then reduce the area of contact when the planet wheel rotates, and then reduce frictional force to two terminal surface bearing rotate the adaptation in corresponding first recess, the device passes through terminal surface bearing's setting from this, and then has reduced the friction of planet wheel, and then has reduced the temperature when the device operates, and then has improved life.

Inventors

GAO JIAYOU
ZHANG XIAOMING
ZHANG QIANG
JIANG TAO

Assignees

重庆尚循熙机械制造有限公司

Dates

Publication Date: 20260508
Application Date: 20250703

Claims (5)

1. A speed reducer is characterized in that, The device comprises an integrated gear ring, an input flange, an output shaft, a first inner shell, a second inner shell, a plurality of first transmission units and a plurality of second transmission units; Each first transmission unit comprises a planet wheel, a pin shaft, a plurality of rolling pins and two first end face rolling pin bearings, a plurality of first grooves are formed in each first inner shell and each second inner shell, the output shaft is fixedly connected with the outer wall of each first inner shell, each first inner shell is matched with the corresponding second inner shell, the rolling pins are respectively arranged in the planet wheel, the pin shaft is inserted in the planet wheel, the rolling pins are respectively sleeved outside the pin shaft, the two end face rolling pin bearings are respectively arranged in the corresponding first grooves, the two end face rolling pin bearings are respectively in contact with the planet wheel, and the input flange is arranged on the outer side of the second inner shell.
2. The reduction gear as set forth in claim 1, wherein, The second transmission unit comprises an input gear shaft, two second end face needle bearings and two first deep groove ball bearings, the outer wall of the second inner shell and the integrated gear ring are respectively provided with a second groove, the input gear shaft penetrates through the second inner shell and is positioned among the plurality of first transmission units, the input gear shaft is matched with the planet gears, the two first deep groove ball bearings are respectively sleeved on the outer parts of the input gear shaft and the output shaft and are positioned on the outer wall of the first inner shell, the two second end face needle bearings are respectively arranged on the side faces of the corresponding deep groove ball bearings, and the two second end face needle rollers are respectively matched with the corresponding second grooves.
3. The speed reducer according to claim 2, wherein, The second transmission unit further comprises a second deep groove ball bearing and a third end face needle bearing, the first inner shell is provided with a third groove, the second deep groove ball bearing is sleeved outside the input gear shaft and is matched with the first inner shell, and the third end face needle bearing is arranged inside the third groove.
4. The speed reducer according to claim 3, wherein, The speed reducer further comprises a framework oil seal, and the framework oil seal is arranged in the integrated gear ring.
5. The reduction gear unit as set forth in claim 4, wherein, The plurality of first transmission units are respectively arranged on the input gear shaft in a surrounding mode, and the third end face needle roller bearing is matched with the second deep groove ball bearing.

Description

Speed reducer Technical Field The utility model relates to the technical field of speed reducers, in particular to a speed reducer. Background A speed reducer is a mechanical transmission device for reducing the output rotation speed of a power source (e.g., motor, engine) while increasing the output torque. The material is widely applied to the fields of industry, traffic, energy sources and the like, and is an indispensable core component in mechanical equipment. However, in the prior art, when the planetary gear in the existing speed reducer rotates, the friction force is too large, so that the temperature in the speed reducer is too high, and the service life is shortened. Disclosure of utility model The utility model aims to provide a speed reducer, which solves the problems of the prior art that when a planet wheel in the speed reducer rotates, the friction force is too large, the temperature in the speed reducer is too high, and the service life is shortened. In order to achieve the above purpose, the utility model provides a speed reducer, which comprises an integrated gear ring, an input flange, an output shaft, a first inner shell, a second inner shell, a plurality of first transmission units and a second transmission unit, wherein each first transmission unit comprises a planet wheel, a pin shaft, a plurality of rolling needles and two first end face rolling needle bearings, the first inner shell and the second inner shell are respectively provided with a plurality of first grooves, the output shaft is fixedly connected with the outer wall of the first inner shell, the first inner shell is matched with the second inner shell, a plurality of rolling needles are respectively arranged in the planet wheel, the pin shaft is inserted into the planet wheel, a plurality of rolling needles are respectively sleeved outside the pin shaft, two end face rolling needle bearings are respectively arranged in the corresponding first grooves, two end face rolling needle bearings are respectively contacted with the planet wheel, and the input flange is arranged on the outer side of the second inner shell. The second transmission unit comprises an input gear shaft, two second end face needle bearings and two first deep groove ball bearings, the outer wall of the second inner shell and the integral gear ring are respectively provided with a second groove, the input gear shaft penetrates through the second inner shell and is positioned among the plurality of first transmission units, the input gear shaft is matched with the planet gears, the two first deep groove ball bearings are respectively sleeved on the outer parts of the input gear shaft and the output shaft and are positioned on the outer wall of the first inner shell, the two second end face needle bearings are respectively arranged on the side faces of the corresponding deep groove ball bearings, and the two second end face needle rollers are respectively matched with the corresponding second grooves. The second transmission unit further comprises a second deep groove ball bearing and a third end face needle bearing, the first inner shell is provided with a third groove, the second deep groove ball bearing is sleeved on the outer portion of the input gear shaft and is matched with the first inner shell, and the third end face needle bearing is arranged in the third groove. The speed reducer further comprises a framework oil seal, and the framework oil seal is arranged in the integrated gear ring. The first transmission units are respectively arranged on the input gear shaft in a surrounding mode, and the third end face needle roller bearing is matched with the second deep groove ball bearing. According to the speed reducer, when the planet wheel rotates, the two end face needle roller bearings replace the first inner shell and the second inner shell and are in contact with the front end and the rear end of the planet wheel, so that the contact area of the planet wheel during rotation is reduced, friction force is further reduced, the two end face needle roller bearings are rotationally matched in the corresponding first grooves, and therefore friction of the planet wheel is further reduced through the arrangement of the end face needle roller bearings, the temperature of the device during operation is further reduced, and the service life is further prolonged. Drawings In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Fig. 1 is a schematic overall structure of the present utility model. Fig. 2 is a left side view of the entirety of the present utility model. Fig. 3 is a cross-sectional view taken along line A-A of fig. 2 in accordance with the present utility model. Fig. 4 is a schematic view of a part of the structure of the present utility model. The novel planetary gear transmiss