CN208845687U - A kind of main reducer of middle axle roller gear thrust structure - Google Patents
A kind of main reducer of middle axle roller gear thrust structure Download PDFInfo
- Publication number
- CN208845687U CN208845687U CN201821161924.XU CN201821161924U CN208845687U CN 208845687 U CN208845687 U CN 208845687U CN 201821161924 U CN201821161924 U CN 201821161924U CN 208845687 U CN208845687 U CN 208845687U
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- roller gear
- roller
- gear shaft
- bearing
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Abstract
The utility model belongs to commercial vehicle drive axle field, specifically a kind of main reducer of middle axle roller gear thrust structure.The structure includes active cylindrical gear shaft, compound bearing, active roller gear, snap ring and inter-axle differential；Compound bearing includes short outer ring, the roller assembly with retainer, inner ring and long outer ring；The utility model replaces original structure using a kind of completely new compound bearing, three point contact type ball bearing has good mechanical strength and bearing capacity, it can bear biggish axially and radially load, axial thrust can be played, it is able to cooperate needle roller again and bears radial load, improve the radial bearing capacity of the position, axially and radially friction between active roller gear and active cylindrical gear shaft is all converted into rolling friction, assembly and the accuracy of mesh of the active roller gear with active cylindrical gear shaft simultaneously is significantly improved, keep entire inter-axle differential system operating more steady, performance is relatively reliable.
Description
Technical field
The utility model belongs to commercial vehicle drive axle field, specifically a kind of main reducer of middle axle roller gear thrust
Structure.
Background technique
Currently, in the main reducer of middle axle of built-in inter-axle differential between active roller gear and active cylindrical gear shaft
Generalling use copper alloy thrust washer, perhaps end face needle roller thrust bearing bears axial force using steel back composite bush or rolling
Needle bearing comes by radial load.
Above structure has the following problems in use:
Though the copper alloy thrust washer for bearing axial force has good wearability, by biggish axial force and profit
Abrasion is still had in the case that sliding condition is bad, with the increasing of abrasion loss, can make the back lash of inter-axle differential gear
It increases, so that gear teeth meshing is incomplete, inter-axle differential gear is caused to beat tooth.Equally, the steel back composite bush of radial force is born
By biggish radial force and bad lubricating condition, abrasion can be also gradually appeared, as the increase of abrasion loss is made
At active roller gear beat, whole system failure is eventually led to.On the other hand, the copper alloy powder of abrasion also can be to lubricating oil
It causes centainly to pollute.
Replace copper alloy thrust washer and steel back composite bush can be one with end face needle roller thrust bearing and needle bearing
Determine to alleviate the above problem in degree, but limited by structure and assembled condition, on the one hand which cooperates with needle bearing
Working surface it is more demanding, another aspect end face needle roller thrust bearing can generate the play of radial direction in use,
The retainer outer ring and active roller gear for causing needle roller thrust bearing are worn, and end face needle roller thrust bearing and system are eventually led to
Failure.
Summary of the invention
The utility model provides that a kind of structure is simple, the answering of forming of being arranged in pairs or groups by three point contact type ball bearing and needle bearing
The main reducer of middle axle roller gear thrust structure of mould assembly, solves the upper of existing main reducer of middle axle roller gear thrust structure
State problem.
Technical solutions of the utility model are described with reference to the drawings as follows:
A kind of main reducer of middle axle roller gear thrust structure, the structure include active cylindrical gear shaft 1, compound bearing
2, active roller gear 3, snap ring 4 and inter-axle differential 5；Wherein the compound bearing 2 includes short outer ring 6, band retainer
Roller assembly 7, inner ring 8 and long outer ring 9；The active cylindrical gear shaft 1 and active roller gear 3 passes through compound bearing
2 roll connection；The short outer ring 6 and active cylindrical gear shaft 1 is interference fitted at axle bumper shoulder inside groove；The long outer ring 9
It is interference fitted at gear center hole with active roller gear 3；The roller assembly 7 with retainer is fixed with inner ring 8；Institute
The roller assembly 7 with retainer and active cylindrical gear shaft 1 stated roll cooperation at the diameter of axle；The active cylindrical gear shaft
1 with compound 2 cooperation of bearing on the right side of be provided with the slot fixed with snap ring 4；The active cylindrical gear shaft 1 by spline with
Inter-axle differential 5 connects.
The utility model has the following beneficial effects:
1, the features such as the utility model structure is simple, Yi Shixian, high reliablity, low damage maintenance rate；
2, the utility model is using a kind of completely new compound bearing, that is, three point contact ball and needle roller composite bearing, to replace
Original structure, three point contact type ball bearing have good mechanical strength and bearing capacity, can bear it is biggish axially and radially
Load, can play axial thrust and needle roller bears radial load, improve the radial bearing capacity of the position.
3, the composite bearing of the utility model by between active roller gear and active cylindrical gear shaft axially and radially
Friction is all converted to rolling friction, and there are gaps between active cylindrical gear shaft and active roller gear, has certain storage
Oily function, crocking resistance are greatly improved, while active roller gear and the assembly of active cylindrical gear shaft and being engaged
Precision is significantly improved, and keeps entire inter-axle differential system operating more steady, performance is relatively reliable.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the structural schematic diagram of compound bearing in the utility model.
In figure: 1, active cylindrical gear shaft；2, compound bearing；3, active roller gear；4, snap ring；5, shaft space difference speed
Device；6, short outer ring；7, with the roller assembly of retainer；8, inner ring；9, long outer ring.
Specific embodiment
Refering to fig. 1, Fig. 2, a kind of main reducer of middle axle roller gear thrust structure, the structure include active cylindrical gear shaft
1, compound bearing 2, active roller gear 3, snap ring 4 and inter-axle differential 5.
Wherein the compound bearing 2 includes short outer ring 6, the roller assembly 7 with retainer, inner ring 8 and long outer ring 9；
The active cylindrical gear shaft 1 and active roller gear 3 is rolled by compound bearing 2 to be connected.
The short outer ring 6 and active cylindrical gear shaft 1 is interference fitted at axle bumper shoulder inside groove；The long outer ring 9 with
Active roller gear 3 is interference fitted at gear center hole；The roller assembly 7 with retainer is fixed with inner ring 8；It is described
The roller assembly 7 with retainer and active cylindrical gear shaft 1 cooperation is rolled at the diameter of axle；Active cylindrical gear shaft 1 with it is multiple
Right side is provided with a slot at 2 cooperation of mould assembly bearing, and snap ring 4 is fixedly connected in this position with active cylindrical gear shaft 1, it is therefore an objective to axial
Limit compound bearing 2.The active cylindrical gear shaft 1 is connect by spline with inter-axle differential 5.
The compound bearing 2 is three point contact ball and needle roller composite bearing, to replace original structure, is had good
Mechanical strength and bearing capacity can bear biggish axially and radially load, can play axial thrust and needle roller
Radial load is born, the radial bearing capacity of the position is improved, also improves active roller gear 3 and active cylindrical gear shaft
1 and inter-axle differential 5 assembly and service precision, greatly improve the reliability of main reducer of middle axle assembly, maintenance and rope
Cost is paid for be substantially reduced.
In addition, the composite bearing 2 is by the axially and radially friction between active roller gear 3 and active cylindrical gear shaft 1
Rolling friction all is converted to, there are gaps between active cylindrical gear shaft 1 and active roller gear 3, have certain oil storage
Function, crocking resistance are greatly improved, while active roller gear 3 and the assembly of active cylindrical gear shaft 1 and being engaged
Precision is significantly improved, and keeps entire 5 system of inter-axle differential operating more steady, performance is relatively reliable.
The utility model promotion prospect is good.
Claims (1)
1. a kind of main reducer of middle axle roller gear thrust structure, which is characterized in that the structure includes active cylindrical gear shaft
(1), compound bearing (2), active roller gear (3), snap ring (4) and inter-axle differential (5)；The wherein compound bearing
It (2) include short outer ring (6), the roller assembly (7) with retainer, inner ring (8) and long outer ring (9)；The active roller gear
Axis (1) and active roller gear (3) are rolled by compound bearing (2) to be connected；The short outer ring (6) and active roller gear
Axis (1) is interference fitted at axle bumper shoulder inside groove；The long outer ring (9) and active roller gear (3) mistake at gear center hole
It is full of cooperation；The roller assembly (7) with retainer is fixed with inner ring (8)；The roller assembly (7) with retainer with
Active cylindrical gear shaft (1) rolls cooperation at the diameter of axle；The active cylindrical gear shaft (1) is matched with compound bearing (2)
Right side is provided with the slot fixed with snap ring (4) at conjunction；The active cylindrical gear shaft (1) passes through spline and inter-axle differential (5)
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821161924.XU CN208845687U (en) | 2018-07-20 | 2018-07-20 | A kind of main reducer of middle axle roller gear thrust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821161924.XU CN208845687U (en) | 2018-07-20 | 2018-07-20 | A kind of main reducer of middle axle roller gear thrust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208845687U true CN208845687U (en) | 2019-05-10 |
Family
ID=66353589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821161924.XU Active CN208845687U (en) | 2018-07-20 | 2018-07-20 | A kind of main reducer of middle axle roller gear thrust structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208845687U (en) |
-
2018
- 2018-07-20 CN CN201821161924.XU patent/CN208845687U/en active Active
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