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CN-224229187-U - Two-stage planetary gear reducer

CN224229187UCN 224229187 UCN224229187 UCN 224229187UCN-224229187-U

Abstract

The utility model provides a two-stage planetary gear reducer, and belongs to the technical field of reducers. The axial force stabilizing device solves the problem that the axial force of the speed reducer is unstable in the prior art. The planetary gear comprises a gear ring body, a front side end cover plate, a rear side end cover plate, a primary planetary gear set, a secondary planetary gear set and a driving motor, wherein a first bearing hole is formed in the middle of one side of a primary planet carrier, a first ball bearing is fixed in the first bearing hole, a primary fixing column is fixed at the end of the primary planet carrier, a primary planet gear is sleeved outside the primary fixing column, a motor shaft extends out of the driving motor, one end of the motor shaft extends into the first bearing hole and is connected with the first ball bearing, a primary sun gear is sleeved outside the motor shaft, the primary sun gear is meshed with the primary planet gear, and a primary connecting shaft is formed on one side of the primary planet carrier. The utility model has the advantages of compact structure, high transmission efficiency and stable axial force.

Inventors

  • XU JUNPENG
  • JIANG ZUGUANG
  • JIANG CHAOHUI

Assignees

  • 浙江万盛机械有限公司

Dates

Publication Date
20260512
Application Date
20250710

Claims (6)

  1. 1. The two-stage planetary gear reducer comprises a gear ring body (1), a front side end cover plate (2), a rear side end cover plate (3), a first-stage planetary gear set (4), a second-stage planetary gear set (5) and a driving motor (6), and is characterized in that the gear ring body (1) is in a circular ring shape and is internally provided with a gear-shaped structure, the first-stage planetary gear set (4) comprises a first-stage planetary gear (41), a first-stage sun gear (42) and a first-stage planetary carrier (43), a first bearing hole (431) is formed in the middle of one side of the first-stage planetary carrier (43), a first ball bearing (44) is fixed in the first bearing hole (431), a first-stage fixing column (45) is fixed at the end of the first-stage planetary carrier, a first-stage fixing sheet (46) is fixed at the two sides of the first-stage planetary gear set (41) and is sleeved outside the first-stage fixing column (45), a motor shaft (61) is stretched out from the driving motor (6), one end of the motor shaft (61) is stretched into the first bearing hole (431) and is connected with the first ball bearing (44), the first-stage sun gear (42) is sleeved on one side of the first-stage planetary carrier (41) and is meshed with the first-stage planetary gear (43), the secondary planetary gear set (5) comprises a secondary planetary gear (51), a secondary sun gear (52) and a secondary planet carrier (53), a second bearing hole (531) is formed in the middle of one side of the secondary planet carrier (53), a second ball bearing (54) is fixed in the second bearing hole (531), a primary connecting shaft (432) stretches into the second bearing hole (531) and is connected with the second ball bearing (54), a first limiting table body (433) is formed at the end part of the primary connecting shaft (432), the secondary sun gear (52) is sleeved outside the primary connecting shaft (432) and is attached to the first limiting table body (433), a secondary fixing column (55) is fixed at the end part of the secondary planet carrier (53), secondary fixing sheets (56) are fixed on two sides of the secondary planet gear (51) and are sleeved outside the secondary fixing column (55), the secondary planet gears (51) are meshed with the secondary sun gear (52), and the primary planet gear (41) and the secondary planet gear (51) are meshed with the inner gear ring gear (1).
  2. 2. The two-stage planetary gear reducer according to claim 1, wherein the end part of the primary fixing column (45) is connected with a primary connecting bearing (47), the primary connecting bearing (47) is installed between the end part of the primary planet carrier (43) and the primary fixing piece (46), and two sides of the primary connecting bearing (47) are respectively attached to the end part of the primary planet carrier (43) and the primary fixing piece (46).
  3. 3. The two-stage planetary gear reducer according to claim 1, wherein the end part of the second-stage fixing column (55) is connected with a second-stage connecting bearing (57), the second-stage connecting bearing (57) is arranged between the end part of the second-stage planet carrier (53) and the second-stage fixing piece (56), and two sides of the second-stage connecting bearing (57) are respectively attached to the end part of the second-stage planet carrier (53) and the second-stage fixing piece (56).
  4. 4. The two-stage planetary gear reducer according to claim 1, wherein a secondary connecting shaft (532) is formed on one side of the secondary planet carrier (53), the front end cover plate (2) is sleeved outside the secondary connecting shaft (532) and connected with the secondary connecting shaft (532), and the rear end cover plate (3) is sleeved outside the motor shaft (61) and connected with the motor shaft (61).
  5. 5. The two-stage planetary gear reducer according to claim 1, wherein the outer side of the gear ring body (1) is provided with an extension connecting body (11), the peripheries of the front end cover plate (2) and the rear end cover plate (3) are respectively provided with a front connecting body (21) and a rear connecting body (31) which are matched with the extension connecting body (11), a front spacer (9) is arranged between the front connecting body (21) and the extension connecting body (11), a rear spacer (10) is arranged between the rear connecting body (31) and the extension connecting body (11), and a front fixing pin (7) is fixedly arranged between the front connecting body (21), the front spacer (9) and the extension connecting body (11) in a penetrating manner, and a rear fixing pin (8) is fixedly arranged between the rear connecting body (31), the rear spacer (10) and the extension connecting body (11) in a penetrating manner.
  6. 6. The two-stage planetary gear reducer according to claim 1, wherein the rear end cover plate (3) is attached to the end face of the driving motor (6) and is fixedly connected with the end face of the driving motor (6).

Description

Two-stage planetary gear reducer Technical Field The utility model belongs to the technical field of speed reducers, and relates to a two-stage planetary gear speed reducer. Background The two-stage planetary gear reducer is an efficient power transmission device, has the characteristics of compact structure, high transmission efficiency, strong bearing capacity and the like, and is widely applied to scenes requiring large torque output, such as engineering machinery, automation equipment, new energy fields and the like. The Chinese patent with the patent publication number of CN204140785U discloses a secondary planetary gear reducer, which comprises a primary planetary support, a primary planetary gear arranged on the primary planetary support, a secondary planetary support and a secondary planetary gear arranged on the secondary planetary support, wherein the primary planetary gear is internally meshed with a primary gear ring, a primary transmission tooth is arranged in the middle of the primary gear ring, passes through the secondary planetary support and is externally meshed with the secondary planetary gear, the secondary planetary gear is internally meshed with the secondary gear ring, the middle of the secondary gear ring is synchronously connected with an output shaft, the primary planetary support and the secondary planetary support are respectively provided with a mounting flange, a buckle and a bulge are respectively arranged on the mounting flange, and the primary planetary support is fixedly clamped with the secondary planetary support. In the second-stage planetary gear reducer provided by the patent, effective treatment measures for lifting axial force are not provided, if the axial force cannot be properly solved, axial displacement or play of the second-stage planetary carrier can be caused, the meshing precision of gears is affected, abrasion of the gears is accelerated, and the service life of the reducer is shortened. Disclosure of utility model The present utility model has been made keeping in mind the above problems occurring in the prior art, and an object of the present utility model is to provide a two-stage planetary gear reducer. The two-stage planetary gear reducer comprises a gear ring body, a front end cover plate, a rear end cover plate, a primary planetary gear set, a secondary planetary gear set and a driving motor, wherein the gear ring body is in a circular ring shape and internally forms a gear-shaped structure, the primary planetary gear set comprises a primary planetary gear, a primary sun gear and a primary planet carrier, a first bearing hole is formed in the middle of one side of the primary planet carrier, a first ball bearing is fixed in the first bearing hole, a primary fixed column is fixed at the end part of the primary planet carrier, a primary planetary gear sleeve is arranged outside the primary fixed column, primary fixing sheets are fixed at two sides of the primary planetary gear, the driving motor extends out of a motor shaft, one end of the motor shaft extends into the first bearing hole and is connected with the first ball bearing, the primary sun gear sleeve is arranged outside the motor shaft, a primary connecting shaft is formed on one side of the primary planetary carrier, the secondary planetary gear set comprises a secondary planetary gear, a secondary sun gear and a secondary planet carrier, a first ball bearing is fixed in the first bearing hole is formed in the middle of one side of the secondary carrier, a second ball bearing is fixed in the second bearing hole is formed in the second side of the second carrier, a second ball bearing is connected with the second ball bearing sleeve, the second ball bearing is connected with the second ball bearing sleeve is arranged at two sides of the second ball bearing hole, the second ball bearing sleeve is fixedly connected with the second ball bearing sleeve, the second ball bearing sleeve is connected with the second end part of the second ball bearing sleeve, the second shaft is fixedly connected with the first ball bearing hole, and the second shaft is meshed with the second shaft, the primary planetary gear and the secondary planetary gear are both in meshed connection with the inner part of the gear ring body. In the two-stage planetary gear reducer, the first-stage fixing column end portion is connected with the first-stage connecting bearing, the first-stage connecting bearing is arranged between the first-stage planet carrier end portion and the first-stage fixing piece, and two sides of the first-stage connecting bearing are respectively attached to the first-stage planet carrier end portion and the first-stage fixing piece. In the two-stage planetary gear reducer, the end part of the second-stage fixing column is connected with the second-stage connecting bearing, the second-stage connecting bearing is arranged between the end part of the second-stage planet carrier and the second-stage fixin