Input shaft bearing lubrication arrangement
By opening axial and radial oil holes on the input shaft and using a lubricating oil pump to generate pressure for forced lubrication, the problems of uneven lubrication and complex structure in the prior art are solved, achieving effective lubrication of multiple bearings and components, simplifying the structure and reducing weight.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINCHUAN WEIMA MOTOR CO LTD
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-31
AI Technical Summary
Existing lubrication methods for the input shaft bearings of reducers are difficult to accurately provide the appropriate amount of lubricating oil, and traditional lubrication structures are complex and difficult to achieve lubrication in multiple locations.
Axial and radial oil holes are opened on the input shaft, and a cavity structure connecting the gaps and oil holes is used to generate pressure for forced lubrication by a lubricating oil pump, thus achieving multi-point oil spray lubrication.
The lubrication structure has been simplified, enabling effective lubrication of multiple bearings and components, and reducing the weight of the shaft.
Smart Images
Figure CN224579744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reducer lubrication technology, and in particular to an input shaft bearing lubrication structure. Background Technology
[0002] Currently, the input shaft bearings of existing reducers or gearboxes are generally lubricated by oil slinging or point-to-point forced lubrication structures.
[0003] However, using oil-slinging lubrication makes it difficult to guarantee that the right amount of lubricating oil can be accurately provided to lubricate the bearing; point-to-point forced lubrication generally involves making a separate hole at the bearing to lubricate a single bearing, and the lubrication structure is generally more complex. Utility Model Content
[0004] The purpose of this utility model is to provide an input shaft bearing lubrication structure to solve the technical problem of difficult lubrication of the input shaft bearing in existing reducers.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An input shaft bearing lubrication structure includes a first oil hole in the central axis of the input shaft, a second oil hole in the radial direction, and a third oil hole in the axial direction; the third oil hole is parallel to the first oil hole and communicates with the second oil hole, and the second oil hole communicates with the first oil hole.
[0007] The second oil hole is connected to the first cavity, and the first cavity is connected to the second cavity through a gap; the third oil hole is connected to the third cavity, and the first oil hole is connected to the fourth oil hole;
[0008] Lubricating oil is pumped into the first cavity. Under pressure, the lubricating oil enters the second cavity through the gap, and then enters the third cavity through the second oil hole and the third oil hole. Because the gap and the third oil hole are small, the lubricating oil will generate pressure after passing through, so as to spray oil lubricate the upper and lower bearings. Excess lubricating oil enters the fourth oil hole from the first oil hole and is used to force lubricate the remaining components.
[0009] In practical applications, a forced lubrication method using an oil pump is used to pump lubricating oil into the first cavity.
[0010] Compared with the prior art, the input shaft bearing lubrication structure of this utility model has the following advantages:
[0011] The input shaft bearing lubrication structure provided by this utility model provides forced lubrication of bearing components by opening axial oil holes and radial oil holes on the input shaft, and the lubricating oil is sprayed out under pressure after passing through the gaps and oil holes; therefore, the lubrication structure is not only simple, but also can achieve lubrication in multiple places, and the oil holes can also reduce the weight of the shaft. Attached Figure Description
[0012] Figure 1 This is a cross-sectional view of the input shaft bearing lubrication structure provided in an embodiment of the present invention.
[0013] Figure label:
[0014] 1-First oil hole; 2-Second oil hole; 3-Third oil hole; 4-First cavity; 5-Gap; 6-Second cavity; 7-Third cavity; 8-Fourth oil hole. Detailed Implementation
[0015] For ease of understanding, the input shaft bearing lubrication structure provided in the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0016] This utility model embodiment provides an input shaft bearing lubrication structure, such as... Figure 1 As shown, a first oil hole 1 is opened in the inner central shaft of the input shaft, a second oil hole 2 is opened in the radial direction, and a third oil hole 3 is opened in the axial direction; the third oil hole 3 is parallel to the first oil hole 1 and communicates with the second oil hole 2, and the second oil hole 2 communicates with the first oil hole 1.
[0017] The second oil hole 2 is connected to the first cavity 4, and the first cavity 4 is connected to the second cavity 6 through the gap 5; the third oil hole 3 is connected to the third cavity 7, and the first oil hole 1 is connected to the fourth oil hole 8.
[0018] Lubricating oil is pumped into the first chamber 4. Under pressure, the lubricating oil enters the second chamber 6 through the gap 5, and then enters the third chamber 7 through the second oil hole 2 and the third oil hole 3. Because the gap 5 and the third oil hole 3 are small, the lubricating oil will generate pressure after passing through, so as to spray oil to lubricate the upper and lower bearings. Excess lubricating oil enters the fourth oil hole 8 from the first oil hole 1 and is used to force lubricate the remaining parts.
[0019] Compared with the prior art, the input shaft bearing lubrication structure described in this embodiment of the invention has the following advantages:
[0020] In the input shaft bearing lubrication structure provided in this embodiment of the utility model, the bearing components are forcibly lubricated by opening axial oil holes and radial oil holes on the input shaft, and the lubricating oil is sprayed out under pressure after passing through the gaps and oil holes; therefore, the lubrication structure is not only simple, but also can achieve lubrication in multiple places, and the oil holes can also reduce the weight of the shaft.
[0021] In practical applications, an oil pump or other forced lubrication method can be used to pump lubricating oil into the first cavity 4.
[0022] 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 input shaft bearing lubrication arrangement, characterized by, A first oil hole is made in the central part of the input shaft, a second oil hole is made in the radial direction, and a third oil hole is made in the axial direction; the third oil hole is parallel to the first oil hole and communicates with the second oil hole, and the second oil hole communicates with the first oil hole. The second oil hole is connected to the first cavity, and the first cavity is connected to the second cavity through a gap; the third oil hole is connected to the third cavity, and the first oil hole is connected to the fourth oil hole; Lubricating oil is pumped into the first cavity. Under pressure, the lubricating oil enters the second cavity through the gap, and then enters the third cavity through the second oil hole and the third oil hole. Because the gap and the third oil hole are small, the lubricating oil will generate pressure after passing through, so as to spray oil lubricate the upper and lower bearings. Excess lubricating oil enters the fourth oil hole from the first oil hole and is used to force lubricate the remaining components.
2. The input shaft bearing lubrication arrangement of claim 1, wherein, The lubricating oil is pumped into the first cavity using a forced lubrication method with an oil pump.