Bearing oil injection and pressure relief structure
By designing an automatic pressure relief valve and clearance seal structure in the bearing, the problems of excessive injection of lubricating oil and poor dust protection are solved, and the lubricating effect is improved and the bearing assembly is effectively protected.
Patent Information
- Application Number
- CN202421831397.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The prior art lacks effective pressure control and dust prevention measures during bearing lubrication, resulting in excessive injection of lubricating oil that may damage the bearing, and uneven lubrication and poor dust prevention effect.
A bearing oil injection and pressure relief structure is designed, and an automatic pressure relief valve is used to achieve automatic pressure relief in the lubricating oil chamber to avoid excessive internal pressure; at the same time, an oil injection channel and a clearance seal structure are set on the bearing seat to ensure uniform injection of lubricating oil and effectively prevent dust.
Through the design of the automatic pressure relief valve, excessive injection of lubricating oil is avoided to damage the bearing, and the lubricating effect is improved; and the gap sealing structure effectively prevents dust and protects the bearing assembly.
Smart Images
Figure CN222773007U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearings, and in particular relates to a bearing oil injection and pressure relief structure, which can be applied to agricultural machinery. Technical Background
[0002] The lubrication of bearings and bearing seats is one of the most critical daily maintenance items, especially for agricultural machinery with complex operating environments and high power intensity. At present, the lubrication and maintenance of bearings and bearing seats are generally injected with lubricating oil. The more the lubricating oil is injected, the more it will be. Since there is generally no detection device, the oil is generally injected based on experience. Excessive injection of lubricating oil will generate a large pressure, which will damage or damage the surrounding bearings and affect the service life of the components.
[0003] In addition, especially for agricultural machinery, the operating environment is complex and dust prevention is the key. How to improve the dust prevention effect of bearings is also our research and development direction;
[0004] Currently, many bearings are externally oiled, which relies on penetration into the deep of the bearing, resulting in uneven lubrication. Utility Model Content
[0005] The utility model provides a bearing oil injection pressure relief structure, which can solve the problems pointed out in the background technology.
[0006] A bearing oil filling and pressure relief structure includes a bearing, a bearing seat, a lubricating oil chamber, and an automatic pressure relief valve. The automatic pressure relief valve is used for automatic pressure relief of the lubricating oil chamber. The automatic pressure relief valve includes a valve body and a valve core. The valve body has a pressure inlet end and a pressure outlet end. The pressure inlet end is connected to the lubricating oil chamber. The valve core is sealed on the pressure inlet end under the action of a pressure piece.
[0007] Preferably, the valve body is a hollow rod, one inner end of which is a pressure inlet end and the other inner end is a pressure outlet end.
[0008] Preferably, the valve core is a blocking ball, and the blocking ball reciprocates along the inside of the hollow rod. The pressure piece is a compression spring, and the blocking ball is blocked at the pressure inlet end under the action of the compression spring.
[0009] Preferably, the hollow rod is a hollow bolt rod.
[0010] Preferably, the bearing seat is provided with an oil injection channel, through which lubricating oil is injected into the inner bearing.
[0011] Preferably, a gap sealing structure is provided on the bearing seat.
[0012] Preferably, the gap sealing structure is an annular gap groove arranged on the connecting side of the bearing seat.
[0013] Beneficial effects: The utility model provides a bearing oil injection pressure relief structure, and the automatic pressure relief valve can realize automatic pressure relief, thereby preventing excessive internal pressure from damaging other components;
[0014] The built-in oil injection channel allows the lubricating oil to enter the inner bearing smoothly, which improves the lubrication effect.
[0015] The designed gap sealing structure can effectively prevent dust and water, and can effectively protect the bearing components. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] Figure 2 For this utility model Figure 1 The enlarged schematic diagram of point A in the middle,
[0018] Description of reference numerals:
[0019] Reference numerals in the figure: bearing 1; bearing seat 2; lubricating oil chamber 3; automatic pressure relief valve 4; valve body 41; pressure inlet end 42; pressure outlet end 43; valve core 44; pressure piece 45; oil injection channel 5; annular gap groove 6; sealing end plate 7. DETAILED DESCRIPTION
[0020] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.
[0021] Embodiment 1:
[0022] like Figure 1-2 As shown, an embodiment of the utility model provides a bearing oil filling and pressure relief structure, including a bearing 1, a bearing seat 2, a lubricating oil chamber 3, and an automatic pressure relief valve 4, wherein the automatic pressure relief valve 4 is used for automatic pressure relief of the lubricating oil chamber 3, and the automatic pressure relief valve 4 includes a valve body 41 and a valve core 44, wherein the valve body 41 has a pressure inlet end 42 and a pressure outlet end 43, wherein the pressure inlet end 42 is connected to the lubricating oil chamber 3, and the valve core 44 is sealed on the pressure inlet end 42 under the action of a pressure piece 45.
[0023] Specifically, the valve body 41 is a hollow rod, one inner end of which is a pressure inlet end 42, and the other end is a pressure outlet end 43. The valve core 44 is a sealing ball, which reciprocates along the inside of the hollow rod. The pressure piece 45 is a compression spring, and the sealing ball is sealed at the pressure inlet end 42 under the action of the compression spring. One end of the compression spring rests on the sealing ball, and the other end rests on the boss inside the hollow rod. When the internal pressure of the lubricating oil chamber 3 is greater than the force of the compression spring, the compression spring is compressed, and the sealing ball moves away from the sealing position. The lubricating oil and gas in the lubricating oil chamber 3 enter from the pressure inlet end 42 and are discharged from the pressure outlet end 43, so as to realize automatic pressure relief and oil drainage in the lubricating oil chamber 3.
[0024] In some embodiments, the hollow rod is a hollow bolt rod, and the hollow bolt rod can be directly fixed on the sealing end plate 7 to facilitate the installation of the automatic pressure relief valve 4.
[0025] Embodiment 2:
[0026] In some embodiments, the bearing seat 2 is provided with an oil injection channel 5, and the lubricating oil is injected into the inner bearing 1 through the oil injection channel 5 to achieve internal injection of the lubricating oil, thereby achieving a good lubrication effect.
[0027] Embodiment 3:
[0028] In some embodiments, a gap sealing structure is provided on the bearing seat 2, and the gap sealing structure is an annular gap groove 6 arranged on the connecting side of the bearing seat 2, that is, a gap seal is formed between the annular gap groove 6 and the mounting body (such as a rotating shaft), similar to a "labyrinth" gap seal, that is, after the annular gap groove 6 cooperates with the mounting body, several bending parts are formed to prevent dust from entering.
[0029] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A bearing oil filling and pressure relief structure, comprising a bearing (1), a bearing seat (2), and a lubricating oil chamber (3), characterized in that: The invention also comprises an automatic pressure relief valve (4), which is used for automatically relieving pressure of the lubricating oil chamber (3). The automatic pressure relief valve (4) comprises a valve body (41) and a valve core (44). The valve body (41) has a pressure inlet end (42) and a pressure outlet end (43). The pressure inlet end (42) is connected to the lubricating oil chamber (3). The valve core (44) is sealed on the pressure inlet end (42) under the action of a pressure piece (45).
2. A bearing oil filling and pressure relief structure according to claim 1, characterized in that: The valve body (41) is a hollow rod, one inner end of which is a pressure inlet end (42) and the other inner end is a pressure outlet end (43).
3. A bearing oil filling and pressure relief structure according to claim 2, characterized in that: The valve core (44) is a blocking ball, which reciprocates along the inside of the hollow rod, and the pressure piece (45) is a compression spring, which causes the blocking ball to block the pressure inlet end (42) under the action of the compression spring.
4. A bearing oil filling and pressure relief structure according to claim 2, characterized in that: The hollow rod is a hollow bolt rod.
5. A bearing oil filling and pressure relief structure according to any one of claims 1 to 4, characterized in that: The bearing seat (2) is provided with an oil injection channel (5), and lubricating oil is injected into the inner bearing (1) through the oil injection channel (5).
6. A bearing oil filling and pressure relief structure according to any one of claims 1 to 4, characterized in that: The bearing seat (2) is provided with a gap sealing structure.
7. A bearing oil filling and pressure relief structure according to claim 6, characterized in that: The gap sealing structure is an annular gap groove (6) arranged on the connection side of the bearing seat (2).