Oil baffle plate for lubricating supporting bearing of intermediate shaft of multi-gear speed reducer
By designing an oil baffle that matches the oil guide groove of the reducer housing, lubricating oil is collected and guided to the intermediate shaft support bearing, solving the problem of insufficient lubrication of the intermediate shaft support bearing of the multi-speed reducer, and achieving full lubrication and extended service life of the bearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-06
AI Technical Summary
In existing multi-speed dual intermediate shaft reducers, the intermediate shaft support bearings cannot be adequately lubricated under certain operating conditions, leading to wear and increased temperature, which affects service life.
Design an oil baffle that works in conjunction with the oil guide groove inside the reducer housing to collect and guide the lubricating oil splashed from the second and third gear drive gears on the intermediate shaft to the cylindrical roller bearing chamber supporting the right side of the intermediate shaft, thus achieving sufficient lubrication.
It effectively reduces bearing wear, lowers temperature, and extends bearing service life. At the same time, it has a simple structure, is easy to install, and meets the design requirements of the reducer.
Smart Images
Figure CN223975529U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of speed reducer technology, and in particular to an oil baffle for lubricating the intermediate shaft support bearing of a multi-speed speed reducer. Background Technology
[0002] In the existing technology, multi-speed dual intermediate shaft reducers have technical difficulties in spatial arrangement and oil churning loss, which makes it impossible to ensure that both intermediate shaft support bearings are below the oil level. As a result, under the conditions of vehicle level and 30% downhill, the lubricating oil splashed out by the second and third gear drive gears inside the reducer is insufficient to fully lubricate the intermediate shaft support bearings.
[0003] Therefore, how to provide an oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer, which can achieve sufficient lubrication of the intermediate shaft support bearing, has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0004] The purpose of this invention is to provide an oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer, thereby solving the technical problem of insufficient splash lubrication of the intermediate shaft support bearing in existing systems. Compared with the existing single lubrication structure oil guide groove inside the reducer housing, it can effectively collect the lubricating oil splashed out by the second and third gear drive gears of the intermediate shaft, and cooperate with the oil guide groove inside the reducer housing to guide the flow to the intermediate shaft support bearing, thereby providing sufficient lubrication to the intermediate shaft support bearing, effectively reducing bearing wear, lowering bearing temperature, and thus effectively extending the service life of the bearing.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer includes: an oil baffle body, the oil baffle body having a first fixed support foot and a second fixed support foot, and the oil baffle body being connected to the reducer housing by two fixing screws passing through the first fixed support foot and the second fixed support foot;
[0007] The reducer housing has an internal oil guide groove and an internal intermediate shaft right-side support cylindrical roller bearing chamber; the two ends of the intermediate shaft are respectively equipped with an intermediate shaft left-side support deep groove ball bearing and an intermediate shaft right-side support cylindrical roller bearing; the intermediate shaft is integrated with the first gear drive gear, and the intermediate shaft is connected to the second gear drive gear, the third gear drive gear, and the input shaft driven gear through splines;
[0008] The driven gear on the input shaft receives power from the input shaft and drives the intermediate shaft to rotate clockwise via a spline connection. Simultaneously, the intermediate shaft transmits power to the second and third drive gears via the spline connection, and together they rotate clockwise, splashing out the lubricating oil inside the reducer. At this time, the oil baffle plate collects the lubricating oil splashed out by the second and third drive gears and guides it to the oil guide groove inside the reducer housing. Finally, the lubricating oil is introduced into the cylindrical roller bearing chamber on the right side of the intermediate shaft inside the reducer housing to fully lubricate the cylindrical roller bearing on the right side of the intermediate shaft.
[0009] Compared with the prior art, the oil baffle for lubricating the intermediate shaft support bearing of the multi-speed reducer described in this utility model has the following advantages:
[0010] The oil baffle plate for lubricating the intermediate shaft support bearing of a multi-speed reducer provided by this utility model, because the oil baffle plate body cooperates with the oil guide groove inside the reducer housing, guides the lubricating oil to the cylindrical roller bearing chamber supporting the right side of the intermediate shaft inside the reducer housing, and fully lubricates the cylindrical roller bearing supporting the right side of the intermediate shaft. Therefore, compared with the existing single lubrication structure oil guide groove inside the reducer housing, it can effectively collect the lubricating oil splashed out by the second and third gear drive gears of the intermediate shaft, and guide it to the intermediate shaft support bearing in cooperation with the oil guide groove inside the reducer housing, thereby fully lubricating the intermediate shaft support bearing, effectively reducing bearing wear, lowering bearing temperature, and thus effectively extending the bearing service life. In addition, the oil baffle plate for lubricating the intermediate shaft support bearing of a multi-speed reducer provided by this utility model has the advantages of simple structure, small size, and convenient installation, which is more in line with the current needs of reducer structural design. Attached Figure Description
[0011] Figure 1 A schematic diagram of the structure of the oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer provided in an embodiment of this utility model;
[0012] Figure 2 A schematic diagram of the assembly structure of the oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer provided in an embodiment of this utility model;
[0013] Figure 3 A schematic diagram of the oil collection and guiding flow direction of the oil baffle plate for lubricating the intermediate shaft support bearing of a multi-speed reducer, provided for an embodiment of this utility model.
[0014] Figure label:
[0015] 1- Gearbox housing; 11- Oil guide groove inside the gearbox housing; 12- Cylindrical roller bearing chamber supporting the right side of the intermediate shaft inside the gearbox housing; 2- Fixing screw; 3- Oil baffle plate body; 31- First fixed support leg of the oil baffle plate; 32- Second fixed support leg of the oil baffle plate; 4- Cylindrical roller bearing supporting the right side of the intermediate shaft; 5- Intermediate shaft; 51- First gear drive gear; 6- Second gear drive gear; 7- Third gear drive gear; 8- Input shaft driven gear; 9- Deep groove ball bearing supporting the left side of the intermediate shaft. Detailed Implementation
[0016] For ease of understanding, the oil baffle plate for lubricating the intermediate shaft support bearing of a multi-speed reducer provided in the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0017] This utility model embodiment provides an oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer, such as... Figures 1-3 As shown, it includes: an oil baffle body 3, which has an oil baffle first fixed support 31 and an oil baffle second fixed support 32, and the oil baffle body 3 is connected to the reducer housing 1 by two fixing screws 2 passing through the oil baffle first fixed support 31 and the oil baffle second fixed support 32.
[0018] The reducer housing 1 has an internal oil guide groove 11 and an internal intermediate shaft right-side support cylindrical roller bearing chamber 12; the two ends of the intermediate shaft 5 are respectively equipped with an intermediate shaft left-side support deep groove ball bearing 9 and an intermediate shaft right-side support cylindrical roller bearing 4; the intermediate shaft 5 is integrated with the first gear drive gear 51, and the intermediate shaft 5 is connected to the second gear drive gear 6, the third gear drive gear 7, and the input shaft driven gear 8 through splines;
[0019] The driven gear 8 receives power from the input shaft and drives the intermediate shaft 5 to rotate clockwise via a spline connection. Simultaneously, the intermediate shaft 5 transmits power to the second-speed drive gear 6 and the third-speed drive gear 7 via a spline connection, and together they rotate clockwise, splashing out the lubricating oil inside the reducer. At this time, the oil baffle plate body 3 collects the lubricating oil splashed out by the second-speed drive gear 6 and the third-speed drive gear 7, and guides it to the oil guide groove 11 inside the reducer housing. Finally, the lubricating oil is introduced into the cylindrical roller bearing chamber 12 on the right side of the intermediate shaft inside the reducer housing to fully lubricate the cylindrical roller bearing 4 on the right side of the intermediate shaft.
[0020] Compared with the prior art, the oil baffle for lubricating the intermediate shaft support bearing of the multi-speed reducer described in this embodiment of the invention has the following advantages:
[0021] In the oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer provided in this embodiment, the oil baffle body 3, through cooperation with the oil guide groove 11 inside the reducer housing, guides the lubricating oil to the cylindrical roller bearing chamber 12 on the right side of the intermediate shaft inside the reducer housing, and fully lubricates the cylindrical roller bearing 4 on the right side of the intermediate shaft. Therefore, compared with the existing single lubrication structure oil guide groove inside the reducer housing, it can effectively collect the lubricating oil splashed out by the second and third gear drive gears of the intermediate shaft, and guide it to the intermediate shaft support bearing through cooperation with the oil guide groove inside the reducer housing, thereby fully lubricating the intermediate shaft support bearing, effectively reducing bearing wear, lowering bearing temperature, and thus effectively extending the bearing service life. In addition, the oil baffle for lubricating the intermediate shaft support bearing of a multi-speed reducer provided in this embodiment has the advantages of simple structure, small size, and convenient installation, which is more in line with the current needs of reducer structural design.
[0022] In other words, the oil baffle for lubricating the intermediate shaft support bearing of the multi-speed reducer provided in this embodiment of the utility model achieves the purpose of fully lubricating the intermediate shaft support bearing by continuously adjusting the structure and arrangement of the oil baffle and cooperating with the oil guide groove inside the reducer housing through animation simulation of splash lubrication inside the reducer.
[0023] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. An oil deflector for lubricating a support bearing of an intermediate shaft of a multi- speed reduction gear, characterized in that Comprising: The oil baffle body has an oil baffle first fixed leg and an oil baffle second fixed leg, and the oil baffle body is connected with the reducer housing through two fixed screws passing through the oil baffle first fixed leg and the oil baffle second fixed leg; The reducer housing has a reducer housing internal oil guide groove and a reducer housing internal middle shaft right side support cylindrical roller bearing chamber; the two ends of the middle shaft are respectively provided with a middle shaft left side support deep groove ball bearing and a middle shaft right side support cylindrical roller bearing; the middle shaft is integrated with a two-gear primary gear, and the middle shaft is connected with a three-gear primary gear and an input shaft driven gear through a spline; The input shaft driven gear receives driving power from the input shaft and drives the middle shaft to rotate clockwise through the spline connection, and the middle shaft transmits power to the two-gear primary gear and the three-gear primary gear through the spline connection, and rotates clockwise together to splash and throw out the lubricating oil in the reducer; at this time, the oil baffle body collects the lubricating oil splashed and thrown out by the two-gear primary gear and the three-gear primary gear, and guides and transmits the lubricating oil to the reducer housing internal oil guide groove, and finally guides the lubricating oil into the reducer housing internal middle shaft right side support cylindrical roller bearing chamber to fully lubricate the middle shaft right side support cylindrical roller bearing.