Lubricating structure of speed reducer bearing for engineering machinery
By installing counters and oil storage grooves on the planetary shaft of the reducer and adding oil over holes on the bearing spacer, the problem of insufficient lubrication of the reducer planetary wheel bearing when rotating at high speed is solved, and effective lubrication and cooling of the bearing is achieved.
Patent Information
- Application Number
- CN202421701704.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-07-18
AI Technical Summary
When the bearings of existing reducer planetary wheels rotate at high speed, lubricating oil is insufficient through the bearing roller gap, resulting in the problem of heating or even burning of the bearing.
The planetary shaft is equipped with counters and oil storage grooves, and oil-through holes are added to the bearing spacer, thereby providing sufficient lubricating oil for the planetary gear bearings to ensure lubrication and cooling of the bearings.
Through the design of counters and grooves, an oil silo is formed, and lubricating oil can effectively enter the planetary wheel bearing, solving the problem of insufficient lubrication during high-speed rotation and ensuring the normal operation and cooling of the bearing.
Smart Images
Figure CN222687281U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of reducers, in particular to a lubricating structure of a reducer bearing for engineering machinery, which is a lubricating structure applied to a planetary wheel bearing of a reducer. Background Art
[0002] The conventional structure of the planetary shaft and bearing spacer of the reducer commonly used in engineering machinery in the prior art adopts a transition fit. The lubrication of the planetary wheel bearing mainly relies on the oil entering through the clearance of the bearing rollers. When the speed is relatively high, the oil inlet and outlet volume of the lubricating oil is too low, which will cause the bearing to heat up, and in severe cases, the planetary wheel bearing will be burned.
[0003] Therefore, it is necessary to develop a new type of lubrication structure for the reducer bearings to provide sufficient lubricating oil to ensure the lubrication and cooling of the bearings. Utility Model Content
[0004] Purpose of the utility model: In view of the deficiencies and defects of the prior art, the utility model provides a lubrication structure for a reducer bearing for engineering machinery, wherein a countersunk hole is provided on the planetary shaft and an oil hole and an oil storage groove are added, and an oil hole is added to the bearing spacer, thereby providing sufficient lubricating oil to the planetary gear bearing of the reducer to ensure lubrication and cooling of the bearing.
[0005] Technical solution: The utility model discloses a lubrication structure for a reducer bearing for engineering machinery, which is characterized by comprising a planetary shaft with countersunk holes and grooves, a bearing spacer with oil holes, a planetary wheel, a planetary wheel bearing and a retaining ring. The planetary wheel bearing is mounted on the planetary wheel, the planetary shaft with countersunk holes and grooves is mounted on the planetary wheel bearing, the bearing spacer with oil holes is mounted between two planetary wheel bearings, and the retaining ring is mounted on the planetary shaft with countersunk holes and grooves.
[0006] Wherein, the planetary wheel bearing is installed in the hole of the planetary wheel.
[0007] Wherein, the planet shaft with countersunk holes and grooves is installed in the hole of the planet wheel bearing.
[0008] Wherein, the retaining ring is installed in the groove of the planetary shaft with countersunk holes and grooves.
[0009] Wherein, the planetary gear bearing is arranged on the reducer.
[0010] Wherein, the reducer is a reducer for engineering machinery.
[0011] Wherein, external lubricating oil enters into the counterbore of the planetary shaft with the counterbore and the groove.
[0012] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model is provided with a countersink on the planetary shaft and an oil hole and an oil storage groove are added, and the bearing spacer is provided with an oil hole, thereby providing sufficient lubricating oil to the planetary gear bearing of the reducer to ensure the lubrication and cooling of the bearing. It effectively solves the problem that when the reducer rotates at high speed, the amount of lubricating oil entering the bearing through the roller gap of the planetary wheel bearing is reduced and is insufficient to cool the heat of the bearing.
[0013] When the reducer runs at high speed, the lubricating oil entering the bearing through the roller gap of the planetary gear bearing is significantly reduced, while a large amount of lubricating oil can enter the groove of the planetary shaft through the countersunk hole and oil hole of the planetary shaft, thereby forming an oil tank at the groove of the planetary shaft. The oil in the oil tank enters the planetary gear bearing through the oil hole of the bearing spacer, thereby achieving lubrication and cooling for the planetary gear bearing. Due to the existence of the planetary shaft groove, the oil hole of the bearing spacer does not need to be aligned with the oil hole of the planetary shaft when installing the bearing spacer, and the oil path can be unobstructed; the retaining ring is installed inside the planetary shaft to form a retaining platform, thereby forming an oil tank at the countersunk hole of the planetary shaft, and continuously supplying oil to the oil tank of the planetary shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a schematic structural diagram of a planetary shaft with countersunk holes and grooves of the utility model;
[0016] Figure 3 It is a structural schematic diagram of a bearing spacer with oil holes of the utility model;
[0017] In the figure, 1 is a planetary shaft with countersunk holes and grooves; 2 is a bearing spacer with oil holes; 3 is a planetary gear; 4 is a planetary gear bearing; and 5 is a retaining ring. DETAILED DESCRIPTION
[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0019] The utility model discloses a lubrication structure of a reducer bearing for engineering machinery, comprising a planetary shaft 1 with countersunk holes and grooves, a bearing spacer 2 with oil holes, a planetary wheel 3, a planetary wheel bearing 4 and a retaining ring 5. The planetary wheel bearing 4 is mounted on the planetary wheel 3, the planetary shaft 1 with countersunk holes and grooves is mounted on the planetary wheel bearing 4, the bearing spacer 2 with oil holes is mounted between two planetary wheel bearings 4, and the retaining ring 5 is mounted on the planetary shaft 1 with countersunk holes and grooves.
[0020] The planetary wheel bearing 4 is installed in the hole of the planetary wheel 3. The planetary shaft 1 with the countersunk hole and the groove is installed in the hole of the planetary wheel bearing 4. The retaining ring 5 is installed in the groove of the planetary shaft 1 with the countersunk hole and the groove. The planetary wheel bearing 4 is arranged on the reducer. The reducer is a reducer for engineering machinery. The external lubricating oil enters the countersunk hole of the planetary shaft 1 with the countersunk hole and the groove.
[0021] During use, when the planetary gear 3 rotates at high speed, the lubricating oil will enter the countersunk hole of the planetary shaft 1 with countersunk holes and grooves, and the baffle formed by the retaining ring 5 will form an oil tank in the planetary shaft 1 with countersunk holes and grooves. The lubricating oil enters the groove through the oil hole of the planetary shaft 1 with countersunk holes and grooves, thereby forming a second oil tank on the planetary shaft 1 with countersunk holes and grooves. The lubricating oil in this oil tank enters the middle of the two planetary wheel bearings 4 through the oil hole on the spacer sleeve 2 with oil hole, thereby lubricating and cooling the two planetary wheel bearings 4.
Claims
1. A lubrication structure for a reducer bearing for engineering machinery, characterized in that: The invention comprises a planetary shaft (1) with a countersunk hole and a groove, a bearing spacer (2) with an oil hole, a planetary wheel (3), a planetary wheel bearing (4) and a retaining ring (5), wherein the planetary wheel bearing (4) is mounted on the planetary wheel (3), the planetary shaft (1) with a countersunk hole and a groove is mounted on the planetary wheel bearing (4), the bearing spacer (2) with an oil hole is mounted between two planetary wheel bearings (4), and the retaining ring (5) is mounted on the planetary shaft (1) with a countersunk hole and a groove.
2. The lubrication structure of the reducer bearing for engineering machinery according to claim 1, characterized in that: The planetary wheel bearing (4) is installed in the hole of the planetary wheel (3).
3. The lubrication structure of the reducer bearing for engineering machinery according to claim 1, characterized in that: The planet shaft (1) with the countersunk hole and the groove is installed in the hole of the planet wheel bearing (4).
4. The lubrication structure of the reducer bearing for engineering machinery according to claim 1, characterized in that: The retaining ring (5) is installed in the groove of the planetary shaft (1) with a countersunk hole and a groove.
5. The lubrication structure of the reducer bearing for engineering machinery according to claim 1, characterized in that: The planetary wheel bearing (4) is arranged on the reducer.
6. The lubrication structure of the reducer bearing for engineering machinery according to claim 5, characterized in that: The reducer is a reducer for engineering machinery.
7. The lubrication structure of the reducer bearing for engineering machinery according to claim 1, characterized in that: External lubricating oil enters the counterbore of the planetary shaft (1) with the counterbore and the groove.