Abrasion-resistant and impact-resistant engine main bearing bush

Abstract

The utility model discloses a wear-resistant shock-resistant engine main bearing bush, which comprises a main bearing bush arranged between a main shaft neck and a bearing bush sleeve, an oil duct is arranged in the middle of the inner surface of the main bearing bush, and an oil port is arranged at the center of the oil duct of the main bearing bush. Oil storage grooves and oil storage pieces are alternately distributed on the surfaces, distributed on the two sides of the oil channel, of the inner surface of the main shaft bush, each oil storage piece comprises a wear-resistant alloy inner layer, a wear-resistant rubber oil storage layer and a wear-resistant alloy surface layer, the wear-resistant rubber oil storage layers are distributed between the wear-resistant alloy inner layers and the wear-resistant alloy surface layers, and oil outlet micropores are formed in the surfaces of the wear-resistant alloy surface layers; the main bearing bush is provided with an oil storage design, lubricating oil flows into the oil storage tank, part of the lubricating oil can be stored, the rotating main shaft neck impacts the wear-resistant alloy surface layer, the wave crests of the wear-resistant rubber oil storage layer deform under the action of the wear-resistant alloy surface layer, the lubricating oil stored at the wave troughs flows out of the oil outlet micropores, part of the lubricating oil can be stored, and loss of the lubricating oil is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine accessories, and in particular relates to a wear-resistant and impact-resistant engine main bearing bush. Background Art

[0002] The engine main bearing is a key component in the engine equipment. It is in direct contact with the crankshaft and realizes friction transmission between the crankshaft and the main bearing through the action of lubricating oil. The main bearing is usually made of high-strength alloy steel, which has high wear resistance, fatigue resistance and impact resistance. Its main function is to support the main shaft and make it run normally, support the bearing load, reduce friction, reduce axial force, and improve the rotation accuracy.

[0003] When the engine main bearing is used for a long time, as the normal wear increases, the bearing clearance will become larger and obvious bearing noise will occur, which will cause the lubricating oil to be lost midway. In addition, the particle impurities entering from the outside will rub against the main shaft journal, which will destroy the oil film on the surface of the engine main bearing, causing friction between the main shaft journal and the engine main bearing, increasing the degree of wear. When the engine main bearing is in use, there is a problem of no oil storage design. For this reason, the present application proposes a wear-resistant and impact-resistant engine main bearing. Utility Model Content

[0004] The utility model aims to provide a wear-resistant and impact-resistant engine main bearing to solve the problem of the design without oil storage on the engine main bearing proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wear-resistant and impact-resistant engine main bearing, comprising a main bearing installed between the main shaft journal and the bearing sleeve, an oil channel is opened in the middle position of the inner surface of the main bearing, and an oil port is opened at the center position of the oil channel. The inner surface of the main bearing is distributed on both sides of the oil channel. The surface is provided with alternatingly distributed oil storage grooves and oil storage parts, the oil storage parts include a wear-resistant alloy inner layer, a wear-resistant rubber oil storage layer and a wear-resistant alloy surface layer, the wear-resistant rubber oil storage layer is distributed between the wear-resistant alloy inner layer and the wear-resistant alloy surface layer, and the surface of the wear-resistant alloy surface layer is provided with oil outlet micropores.

[0006] Preferably, the oil storage groove provided on the surface of the main bearing is a concave triangular structure.

[0007] Preferably, the wear-resistant alloy inner layer, wear-resistant rubber oil storage layer and wear-resistant alloy surface layer are curved, and an installation groove is provided on the surface of the main bearing. The wear-resistant alloy inner layer, wear-resistant rubber oil storage layer and wear-resistant alloy surface layer are installed in the installation groove, and the inner diameter of the wear-resistant alloy surface layer is the same as the inner diameter of the main bearing.

[0008] Preferably, the surface of the wear-resistant rubber oil storage layer is wavy, and troughs and peaks are formed on the surface of the wear-resistant rubber oil storage layer, and the oil outlet micropores are opposite to the troughs.

[0009] Preferably, the groove depth of the oil channel is the same as the thickness of the wear-resistant alloy surface layer, and the sum of the thickness of the wear-resistant alloy surface layer and the wear-resistant rubber oil storage layer is the same as the thickness of the wear-resistant alloy inner layer.

[0010] Preferably, an oil guide groove is provided on the inner surface of the end of the bearing sleeve.

[0011] Preferably, the oil guide groove is in a triangular shape, and the end of the oil channel is connected to the oil guide groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, there is an oil storage design on the main bearing, and the lubricating oil flows into the oil storage tank, which can store part of the lubricating oil. The rotating main shaft journal impacts the surface layer of the wear-resistant alloy, and the peak of the wear-resistant rubber oil storage layer is deformed by the wear-resistant alloy surface layer. The lubricating oil stored in the trough flows out from the oil outlet micropores, which can store part of the lubricating oil and avoid the loss of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0016] Figure 3 It is a schematic diagram of the top view of the main bearing shell of the utility model;

[0017] Figure 4 For the utility model Figure 3 Schematic diagram of the structure of the main bearing in the middle BB direction;

[0018] Figure 5 For the utility model Figure 3 The enlarged structural diagram of the middle C part;

[0019] Figure 6 It is a partial cross-sectional structural schematic diagram of the main bearing of the utility model;

[0020] In the figure: 1. spindle journal; 2. bearing sleeve; 3. main bearing; 4. wear-resistant alloy surface layer; 5. wear-resistant alloy inner layer; 6. wear-resistant rubber oil storage layer; 31. oil channel; 32. oil port; 33. oil storage tank; 34. oil guide groove; 41. oil outlet micropore; 61. wave trough. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] See also Figures 1 to 6 The utility model provides a technical solution: a wear-resistant and impact-resistant engine main bearing, comprising a main bearing 3 installed between a main shaft journal 1 and a bearing sleeve 2, an oil passage 31 is provided in the middle of the inner surface of the main bearing 3, an oil port 32 is provided at the center of the oil passage 31, the engine oil injection system injects lubricating oil into the oil passage 31 from the oil port 32, the main shaft journal 1 rotates, and an oil film is formed in the gap between the main bearing 3 and the main shaft journal 1; the inner surface of the main bearing 3 is provided with alternately distributed oil storage grooves 33 and oil storage parts on the surface of both sides of the oil passage 31, the lubricating oil flows into the oil storage groove 33, and part of the lubricating oil can be stored to avoid In order to avoid the loss of lubricating oil, the oil storage part includes a wear-resistant alloy inner layer 5, a wear-resistant rubber oil storage layer 6 and a wear-resistant alloy surface layer 4. The wear-resistant rubber oil storage layer 6 is distributed between the wear-resistant alloy inner layer 5 and the wear-resistant alloy surface layer 4. The surface of the wear-resistant alloy surface layer 4 is provided with oil outlet micropores 41. The lubricating oil enters the trough 61 on the surface of the wear-resistant rubber oil storage layer 6 from the oil outlet micropores 41. The rotating main shaft journal 1 impacts the surface of the wear-resistant alloy surface layer 4. The peak of the wear-resistant rubber oil storage layer 6 is deformed by the wear-resistant alloy surface layer 4. The lubricating oil stored in the trough 61 flows out from the oil outlet micropores 41, so as to store part of the lubricating oil and avoid the loss of the lubricating oil.

[0024] In this embodiment, the oil storage groove 33 provided on the surface of the main bearing 3 is a concave triangular structure. The lubricating oil flows into the oil storage groove 33, which can store part of the lubricating oil to avoid the loss of the lubricating oil. Secondly, particulate impurities entering from the outside can accumulate in the oil storage groove 33 to prevent the particulate impurities from destroying the oil film.

[0025] In this embodiment, the wear-resistant alloy inner layer 5, the wear-resistant rubber oil storage layer 6 and the wear-resistant alloy surface layer 4 are curved in shape, and a mounting groove is provided on the surface of the main bearing 3. The wear-resistant alloy inner layer 5, the wear-resistant rubber oil storage layer 6 and the wear-resistant alloy surface layer 4 are installed in the mounting groove. The inner diameter of the wear-resistant alloy surface layer 4 is the same as the inner diameter of the main bearing 3. The surface of the wear-resistant rubber oil storage layer 6 is wavy in shape, and troughs 61 and peaks are formed on the surface of the wear-resistant rubber oil storage layer 6. The oil outlet micropores 41 are opposite to the troughs 61. The rotating main shaft journal 1 impacts the surface of the wear-resistant alloy surface layer 4. The peaks of the wear-resistant rubber oil storage layer 6 are deformed by the wear-resistant alloy surface layer 4. The lubricating oil stored in the trough 61 flows out from the oil outlet micropores 41, so that part of the lubricating oil can be stored to avoid the loss of the lubricating oil.

[0026] In this embodiment, the groove depth of the oil channel 31 is the same as the thickness of the wear-resistant alloy surface layer 4, the sum of the thickness of the wear-resistant alloy surface layer 4 and the wear-resistant rubber oil storage layer 6 is the same as the thickness of the wear-resistant alloy inner layer 5, and the wear-resistant alloy surface layer 4 and the wear-resistant alloy inner layer 5 are made of high-strength alloy steel and have high wear resistance, fatigue resistance and impact resistance.

[0027] In this embodiment, an oil guide groove 34 is provided on the inner surface of the end of the bearing sleeve 2. The oil guide groove 34 is in a triangular shape. The end of the oil channel 31 is connected to the oil guide groove 34. Excessive and uneven lubricating oil can flow from the oil guide groove 34 into the interior of the oil channel 31.

[0028] The working principle and use process of this utility model:

[0029] When the main bearing 3 is in use, the engine oil injection system injects lubricating oil from the oil port 32 into the oil channel 31, the main shaft journal 1 rotates, an oil film is formed in the gap between the main bearing 3 and the main shaft journal 1, and the lubricating oil flows into the oil storage tank 33, which can store part of the lubricating oil. The rotating main shaft journal 1 impacts the surface of the wear-resistant alloy surface layer 4, and the wear-resistant rubber oil storage layer 6 is deformed by the wear-resistant alloy surface layer 4. The lubricating oil stored in the trough 61 flows out from the oil outlet micropores 41, which can store part of the lubricating oil and avoid the loss of the lubricating oil.

[0030] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant and impact-resistant engine main bearing, comprising a main bearing (3) installed between a main shaft journal (1) and a bearing sleeve (2), characterized in that: An oil passage (31) is provided in the middle of the inner surface of the main bearing (3), an oil port (32) is provided in the center of the oil passage (31), and the inner surface of the main bearing (3) is provided with oil storage grooves (33) and oil storage parts which are alternately distributed on the surface of both sides of the oil passage (31), the oil storage parts comprising a wear-resistant alloy inner layer (5), a wear-resistant rubber oil storage layer (6) and a wear-resistant alloy surface layer (4), the wear-resistant rubber oil storage layer (6) is distributed between the wear-resistant alloy inner layer (5) and the wear-resistant alloy surface layer (4), and the surface of the wear-resistant alloy surface layer (4) is provided with oil outlet micropores (41).

2. The wear-resistant and impact-resistant engine main bearing according to claim 1, characterized in that: The oil storage groove (33) provided on the surface of the main bearing (3) is a concave triangular structure.

3. The wear-resistant and impact-resistant engine main bearing according to claim 1, characterized in that: The wear-resistant alloy inner layer (5), the wear-resistant rubber oil storage layer (6) and the wear-resistant alloy surface layer (4) are in a curved shape, a mounting groove is provided on the surface of the main bearing (3), the wear-resistant alloy inner layer (5), the wear-resistant rubber oil storage layer (6) and the wear-resistant alloy surface layer (4) are mounted in the mounting groove, and the inner diameter of the wear-resistant alloy surface layer (4) is the same as the inner diameter of the main bearing (3).

4. The wear-resistant and impact-resistant engine main bearing according to claim 1, characterized in that: The surface of the wear-resistant rubber oil storage layer (6) is in a wave shape, and wave troughs (61) and wave peaks are formed on the surface of the wear-resistant rubber oil storage layer (6), and the oil outlet micropores (41) are opposite to the wave troughs (61).

5. The wear-resistant and impact-resistant engine main bearing according to claim 1, characterized in that: The groove depth of the oil channel (31) is the same as the thickness of the wear-resistant alloy surface layer (4), and the sum of the thickness of the wear-resistant alloy surface layer (4) and the wear-resistant rubber oil storage layer (6) is the same as the thickness of the wear-resistant alloy inner layer (5).

6. The wear-resistant and impact-resistant engine main bearing according to claim 1, characterized in that: An oil guide groove (34) is provided on the inner surface of the end of the bearing sleeve (2).

7. The wear-resistant and impact-resistant engine main bearing according to claim 6, characterized in that: The oil guide groove (34) is in a triangular shape, and the end of the oil passage (31) is in communication with the oil guide groove (34).

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