Bearing retraction type reversing reduction gearbox
By adopting a bearing recessed design and a limit ring sealing structure in the reversing gearbox, the problem of excessive axial length of the output shaft was solved, resulting in cost reduction and improved stability.
Patent Information
- Application Number
- CN202423256006.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-29
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-29
AI Technical Summary
In existing commutator gearboxes, the axial length of the output shaft is too long, which increases manufacturing costs.
The bearing is designed with a recessed bearing, which connects the bearing directly to the flange plate, shortening the axial length of the bearing. The axial displacement of the output shaft is limited by a limit ring and a sealing ring, and the input shaft is connected in conjunction with a planetary reducer.
It effectively reduces the axial length of the output shaft, lowers manufacturing costs, and prevents dust from entering through the sealing ring, thereby improving the stability of the bearing housing.
Smart Images
Figure CN223594911U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transmission field especially a bearing retraction type reversing speed reducer. BACKGROUND
[0002] In the transmission field, reversing speed reducer is 90 DEG reversing speed reduction to the input power, and then divides into two output forces and carries out the output again, the existing output shaft and the box body often adopt bearing connection, and then the outside of bearing is provided with flange plate, the overall width of speed reducer is increased in this way, because the end of output shaft exceeds flange plate, the length of output shaft is increased, and the manufacturing cost of output shaft is increased.
[0003] Summarizing above, how to reduce the axial length of output shaft and the manufacturing cost of output shaft in reversing speed reducer becomes the problem that the researchers in the field urgently need to solve. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problem that how to reduce the axial length of output shaft and the manufacturing cost of output shaft in reversing speed reducer.
[0005] In order to solve the above technical problem, the technical scheme that the utility model adopts is:
[0006] The utility model relates to a bearing retraction type reversing speed reducer, which comprises a box body, a horizontally arranged output shaft rotatably arranged in the box body, a second bevel gear fixedly sleeved on the output shaft, a bearing seat with a vertical input shaft rotatably arranged therein, a first bevel gear arranged on the top of the input shaft and engaged with the second bevel gear, a flange seat arranged on one side of the box body, one end of the output shaft passing through the inner hole of the flange seat, a first step surface with an annular structure being formed at the inner hole, a first bearing fixedly sleeved on the output shaft, the outer ring side surface of the first bearing being abutted against the first step surface, and a first limiting ring sleeved on the output shaft and fixedly connected with the inner ring of the first bearing.
[0007] In the scheme, the bearing adopts the retracted form, that is, the flange plate is directly connected with the box body, the first bearing is arranged at the first step surface of the flange plate, and the first bearing is retracted in the flange plate, so that the axial length of the first bearing is shortened compared with the conventional output shaft, the axial length of the output shaft is reduced, and the manufacturing cost of the output shaft is reduced.
[0008] How to limit the axial displacement of the output shaft, the utility model is provided with a second step surface with an annular structure arranged on the side of the box body away from the flange seat, a second bearing fixedly sleeved on the other end of the output shaft, the outer ring of the second bearing being abutted against the second step surface, and a second limiting ring sleeved on the output shaft and fixedly connected with the inner ring of the second bearing.
[0009] The second bearing on the other side of the output shaft is in contact with a second step surface at the box body, the second limiting ring fixes the inner ring of the second bearing, and the first limiting ring fixes the inner ring of the first bearing, so that the axial displacement of the output shaft relative to the box body is limited, and the output shaft is better axially positioned with the box body.
[0010] In order to prevent dust from entering the reduction gearbox at the second limiting ring, the utility model adopts the sealing ring arranged between the second limiting ring and the end of the box body.
[0011] The sealing ring is arranged at the gap between the box body and the second limiting ring, so that dust is prevented from entering the box body.
[0012] In order to explain how the bearing seat is connected with the input shaft, the utility model adopts the planetary reducer arranged between the bearing seat and the input shaft.
[0013] The planetary reducer can realize the speed reduction of one side of the input shaft.
[0014] The utility model has the beneficial effects that the utility model relates to a bearing retraction type reversing reduction gearbox, the bearing adopts a retraction type, that is, a flange plate is directly connected with the box body, a first bearing is arranged at a first step surface of the flange plate, and the first bearing is retracted in the flange plate; when the output shaft is manufactured, the axial length of the first bearing is shortened relative to a conventional output shaft, the axial length of the output shaft is reduced, and the manufacturing cost of the output shaft is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] The utility model will be further described below in combination with the drawings and embodiments.
[0016] Figure 1 It is a structural schematic view of the utility model;
[0017] In the figure, 1 is a box body, 2 is an output shaft, 3 is a second bevel gear, 4 is a bearing seat, 5 is an input shaft, 6 is a first bevel gear, 7 is a flange seat, 8 is a first step surface, 9 is a first bearing, 10 is a first limiting ring, 11 is a second step surface, 12 is a second bearing, 13 is a second limiting ring, 14 is a sealing ring, and 15 is a planetary reducer. DETAILED DESCRIPTION
[0018] The utility model will be further described below in combination with the drawings and embodiments.
[0019] As Figure 1As shown, the utility model relates to a bearing retraction type reversing speed reducer box, include: box 1, horizontal arrangement output shaft 2, it rotates and is arranged in the box 1, and the second bevel gear 3 is fixed with on it, bearing seat 4, vertical input shaft 5 is rotationally arranged in it, first bevel gear 6, it is arranged at input shaft 5 top, and with second bevel gear 3 meshing, flange seat 7, it is arranged at one side of the box 1, one end of output shaft 2 passes through the inner hole of flange seat 7, and the first step surface 8 of annular structure is opened at the inner hole, first bearing 9, it is fixedly sleeved on the output shaft 2, and the outer ring side surface is opposite the first step surface 8, first limit ring 10, it is sleeved on the output shaft 2, and with the inner ring of first bearing 9 fixed connection,
[0020] In the scheme, the bearing adopts the form of retraction, that is, the flange plate is directly connected with the box, the first bearing is arranged at the first step surface of the flange plate, and the first bearing is retracted in the flange plate; when manufacturing the output shaft, the axial length of the first bearing is shortened relative to the conventional output shaft, thereby realizing the reduction of the axial length of the output shaft and the reduction of the manufacturing cost of the output shaft.
[0021] As Figure 1 shown, how to limit the axial displacement of the output shaft, the utility model adopts the second step surface 11 of annular structure that is arranged on the side of the box 1 away from the flange seat 7, the second bearing 12 is fixedly sleeved on the other end of the output shaft 2, and the outer ring is opposite the second step surface 11, the second limit ring 13 is sleeved on the output shaft 2, and the inner ring of the second bearing 12 is fixedly connected with the second limit ring 13,
[0022] The second bearing on the other side of the output shaft is in contact with the second step surface at the box, the inner ring of the second bearing is fixed by the second limit ring, and the inner ring of the first bearing is fixed by the first limit ring, so that the axial displacement of the output shaft relative to the box is limited, and the output shaft is better axially positioned with the box.
[0023] As Figure 1 shown, in order that dust enters into the speed reducer box at the second limit ring, the utility model adopts the sealing ring 14 that is arranged between the second limit ring 13 and the end of the box 1,
[0024] The sealing ring is arranged at the gap between the box and the second limit ring, so that dust is prevented from entering into the box.
[0025] As Figure 1 shown, in order to explain how the bearing seat is connected with the input shaft, the utility model adopts the planet reducer 15 that is connected between the bearing seat 4 and the input shaft 5,
[0026] The planet reducer can realize the speed reduction on one side of the input shaft.
[0027] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A bearing recessed reversing reduction gearbox characterised in that, The utility model relates to a horizontal planetary reducer, which comprises: a box; a horizontally arranged output shaft rotatably arranged in the box, a second bevel gear fixedly sleeved on the output shaft; a bearing seat with a vertically arranged input shaft rotatably arranged in the bearing seat; a first bevel gear arranged on the top of the input shaft and engaged with the second bevel gear; a flange seat arranged on one side of the box, one end of the output shaft penetrating through the inner hole of the flange seat, a first stepped surface with an annular structure being formed at the inner hole of the flange seat; a first bearing fixedly sleeved on the output shaft, the outer ring side of the first bearing abutting against the first stepped surface; a first limiting ring sleeved on the output shaft, the first limiting ring being fixedly connected with the inner ring of the first bearing.
2. A bearing recessed reversing reduction gearbox according to claim 1, characterised in that, a second stepped surface with an annular structure is arranged on the side of the box away from the flange seat; a second bearing fixedly sleeved on the other end of the output shaft, the outer ring of the second bearing abutting against the second stepped surface; a second limiting ring sleeved on the output shaft, the second limiting ring being fixedly connected with the inner ring of the second bearing.
3. A bearing recessed reversing reduction gearbox according to claim 2, characterised in that, a sealing ring is arranged between the second limiting ring and the end of the box.
4. A bearing recessed reversing reduction gearbox according to claim 2, characterised in that, the bearing seat and the input shaft are connected through a planetary reducer.