Engine with bearing lubricating structure

Abstract

The utility model discloses an engine with a bearing lubrication structure, which comprises a main shell, an integrated cavity is arranged on the main shell, a bearing lubrication cavity is communicated with the integrated cavity, an oil inlet is arranged between the integrated cavity and the bearing lubrication cavity, a bearing mounting groove is arranged on the back side of the bearing lubrication cavity, and the bearing lubrication cavity is communicated with the integrated cavity. A bearing mounting groove is formed in the bearing lubricating cavity, a lubricating channel is communicated between the bearing mounting groove and the bearing lubricating cavity, a liquid storage tank is arranged in the bearing lubricating cavity and is arranged below the oil inlet, and the lubricating channel is arranged in the liquid storage tank. According to the engine with the bearing lubricating structure, in the follow-up using process, the bearing piece can be ejected out from the back face of the bearing installation groove, the disassembling efficiency is improved, meanwhile, the continuous lubricating effect can be achieved in the working process, and the working quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to an engine with a bearing lubrication structure. Background Technology

[0002] In existing technologies, the surface of crankshaft bearing bores is mostly a complete flat plane, making it difficult to remove the bearings after press-fitting, and also making it difficult for engine oil to lubricate the bearings from the back. For example, publication number "CN116140966A" discloses "an engine crankshaft bearing assembly method and engine crankshaft bearing connection structure". An oil seal is inserted into a needle roller bearing, and a lubricating coating is pre-applied to the needle rollers. The needle roller bearing is then pre-press-fitted into a metal bushing. A press-fitting tool is then used to press-fit the entire structure of the needle roller bearing and metal bushing into the rear end bore of the crankshaft. One end of the press-fitting tool is inserted into the bore of the needle roller bearing, and the hammering part of the press-fitting tool is fully fitted against the end face of the metal bushing. The other end of the press-fitting tool is connected to a high-frequency air gun. Under the reciprocating force of the high-frequency air gun, the press-fitting tool hammers the end face of the metal bushing at high frequency, pressing the entire structure of the needle roller bearing and metal bushing into the rear end bore of the crankshaft. Finally, a gearbox plug is inserted into the bore of the needle roller bearing. However, in practical applications, the bearing is difficult to remove after press-fitting, and it cannot receive continuous lubrication in subsequent working processes. Summary of the Invention

[0003] In view of the problems mentioned in the background art, such as the difficulty in removing bearings and the inability to continuously lubricate bearings, this utility model provides an engine with a bearing lubrication structure, which can push the bearing out from the back of the bearing mounting groove during subsequent use, improving disassembly efficiency, and at the same time, can provide a continuous lubrication effect during operation, improving work quality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] An engine with a bearing lubrication structure includes a main housing, an integrated cavity on the main housing, a bearing lubrication chamber connected to the integrated cavity, an oil inlet between the integrated cavity and the bearing lubrication chamber, a bearing mounting groove on the back side of the bearing lubrication chamber, a lubrication channel connecting the bearing mounting groove and the bearing lubrication chamber, a liquid reservoir inside the bearing lubrication chamber located below the oil inlet, and the lubrication channel located within the liquid reservoir.

[0006] In this application, all components and cavities are housed within the main housing, which is the primary component of the engine. An integrated cavity is located on the main housing, housing a transmission system including gears, a main shaft, a countershaft, and transmission components. Therefore, the integrated cavity requires continuous oil lubrication. In this application, an oil inlet is provided between the bearing lubrication cavity and the integrated cavity, allowing oil from the integrated cavity to be transferred to the bearing lubrication cavity. This ensures that oil is available in the bearing lubrication cavity to supply the bearing components. A bearing mounting groove is located on the back side of the bearing lubrication cavity, connecting the bearing components. A lubrication channel connects the bearing mounting groove and the bearing lubrication cavity, allowing oil from the bearing lubrication cavity to enter the bearing mounting groove, thus providing lubrication to the bearing components within the bearing mounting groove. A reservoir is provided in the bearing lubrication chamber, positioned below the oil inlet. This allows the oil to be stored in the reservoir, preventing it from flowing back into the integrated cavity and ensuring continuous lubrication of the bearing components. Simultaneously, the lubrication channel is located in the reservoir, ensuring that the bearing components receive an uninterrupted supply of oil from the reservoir. Even when the oil inlet is not receiving oil, lubrication can still be maintained for a period of time.

[0007] Furthermore, in this application, since the bearing lubrication cavity and the bearing mounting groove are arranged opposite to each other, that is, the bearing mounting groove is located on the back side of the bearing lubrication cavity, and a lubrication channel is provided between the two, since the lubrication channel connects the bearing mounting groove and the bearing lubrication cavity, during use, the bearing component installed on the bearing mounting groove side can be contacted on the bearing lubrication cavity side through the lubrication channel. This allows the operator to use a tool (such as a push rod) from the bearing lubrication cavity side and then abut against the bearing component in the bearing mounting groove through the lubrication channel, thereby pushing out the bearing component in the bearing mounting groove. This solves the problem of the bearing component being difficult to disassemble after press-fitting, improves work efficiency, and ensures the integrity of the bearing component, reducing damage to the bearing component during disassembly.

[0008] Preferably, a partition is provided between the bearing lubrication cavity and the integrated cavity, forming a fluid reservoir between the partition and the bearing lubrication cavity. The oil inlet is located at the end of the partition. The partition between the bearing lubrication cavity and the integrated cavity allows the formation of a fluid reservoir within the bearing lubrication cavity, storing the oil in the lubrication cavity. The partition prevents oil from flowing back into the integrated cavity. By placing the oil inlet at the end of the partition, the entire fluid reservoir is positioned below the oil inlet, facilitating the flow of oil from the inlet into the fluid reservoir while preventing oil from flowing back into the integrated cavity and causing loss of lubricating oil from the bearing components.

[0009] Preferably, the partition plate is provided with columnar protrusions. The columnar protrusions on the partition plate facilitate ejection during the casting process without causing deformation of the partition plate, thus improving the structural strength at that point. Simultaneously, because the columnar protrusions form a raised structure on the partition plate, they further limit the flow of oil in the storage tank. When shaking causes the oil in the storage tank to flow towards the inlet, the columnar protrusions can further limit the flow of oil, preventing it from directly rushing to the inlet.

[0010] Preferably, the bearing mounting groove includes a mounting area that fits against the outer ring of the bearing component. The bearing mounting groove also includes a stepped groove located inside the mounting area. When the bearing component is installed in the bearing mounting groove, a gap exists between the inner ring of the bearing and the stepped groove. The bearing mounting groove includes a mounting area and a stepped groove, with the stepped groove located inside the mounting area. Due to the stepped structure of the stepped groove, the mounting area can achieve a tight fit with the outer ring of the bearing component while maintaining a certain gap between the inner ring of the bearing component and the stepped groove. This ensures that the bearing component does not experience interference friction during operation and allows oil to circulate fully within the bearing mounting groove, ensuring smooth operation.

[0011] Preferably, the lubrication channel includes an opening in the bearing mounting groove, with the outer ring of the bearing partially exposed at the bottom of the opening. If the channel includes an opening that extends through the bearing mounting groove and extends to the outer ring of the bearing, meaning the outer ring is partially exposed at the opening, then during subsequent disassembly, workers can directly use a push rod to push out the outer ring of the bearing through the opening. This avoids the need to push out the bearing by removing the inner ring or balls, ensuring protection of the bearing during the removal process and preventing structural damage.

[0012] Preferably, the opening is a groove-shaped structure, and its position is aligned with the balls inside the bearing component. The groove-shaped opening and its alignment with the balls ensure better lubrication of the balls and allow the oil to be evenly distributed across the inner and outer rings of the bearing component through the rolling of the balls, thus ensuring uniform lubrication.

[0013] Preferably, a locking protrusion is provided on the side of the opening, protruding towards the center of the opening. This locking protrusion, with its structure pointing towards the center of the opening, can lock the width of the opening, reducing the open portion. Furthermore, since the bottom of the opening needs to extend to the outer ring of the bearing component, the locking protrusion improves the support for the bearing component during use, mitigating the uneven support caused by the opening and preventing axial movement that could compromise the connection reliability between the bearing component and the bearing support.

[0014] Preferably, the bearing lubrication cavity has a hollow section. This hollow section reduces the overall weight of the device, making the structure more lightweight.

[0015] Preferably, the bearing mounting groove is provided with a retaining groove, and a retaining spring is engaged with the retaining groove. The retaining groove in the bearing mounting groove can connect to the retaining spring, thereby limiting the bearing components in the bearing mounting groove and ensuring the connection stability of the bearing components.

[0016] Preferably, the lubrication channel is flush with the bottom of the reservoir. This flush arrangement prevents oil accumulation at the bottom of the reservoir, ensuring that the oil can smoothly enter the bearing mounting groove to lubricate the bearing components.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) It can push the bearing parts out from the back of the bearing mounting groove during subsequent use, improving disassembly efficiency, and at the same time, it can provide continuous lubrication during operation, improving work quality;

[0019] (2) It can avoid damage to the bearing components during disassembly and protect the structural integrity of the bearing components;

[0020] (3) It can ensure the uniformity of support for bearing components and avoid the situation where the support effect of local bearing components is weakened, resulting in a decrease in overall stability;

[0021] (4) It can ensure sufficient lubrication of bearing components and improve the uniformity and smoothness of lubrication. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the bearing lubrication cavity in this utility model.

[0024] Figure 3 This is a schematic diagram of the bearing mounting groove in this utility model.

[0025] Figure 4 This is a schematic diagram of the cylindrical protrusion in Example 2.

[0026] In the picture:

[0027] 1 main shell;

[0028] 2. Integrated cavity;

[0029] 3 Bearing lubrication cavity, 31 Oil inlet, 32 Liquid reservoir, 33 Baffle, 331 Columnar protrusion, 34 Locking protrusion, 35 Hollowed-out part; 4 Bearing mounting groove, 41 Mounting area, 42 Step groove, 43 Snap groove, 44 Snap spring.

[0030] 5 lubrication channels, 51 openings;

[0031] 6 bearing components. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1:

[0034] like Figure 1 , 2 As shown in Figure 3, an engine with a bearing lubrication structure includes a main housing 1, an integrated cavity 2 on the main housing 1, a bearing lubrication cavity 3 connected to the integrated cavity 2, an oil inlet 31 between the integrated cavity 2 and the bearing lubrication cavity 3, a bearing mounting groove 4 on the back side of the bearing lubrication cavity 3, a lubrication channel 5 connected to the bearing mounting groove 4 and the bearing lubrication cavity 3, a liquid storage tank 32 inside the bearing lubrication cavity 3, the liquid storage tank 32 being located below the oil inlet 31, and the lubrication channel 5 being located in the liquid storage tank 32.

[0035] In this embodiment, all components and cavities are housed in the main housing 1, which is the main component housing of the engine. An integrated cavity 2 is provided on the main housing 1, and a transmission system, including gears, main shaft and countershaft, and transmission components, is installed in the integrated cavity 2. Therefore, the integrated cavity needs continuous oil lubrication. In this embodiment, an oil inlet 31 is provided between the bearing lubrication cavity 3 and the integrated cavity 2, which can transfer the oil in the integrated cavity 2 to the bearing lubrication cavity 3, so that the bearing lubrication cavity 3 can provide oil to the bearing component 6. A bearing mounting groove 4 is provided on the back side of the bearing lubrication cavity 3, and the bearing component 6 is connected in the bearing mounting groove 4. A lubrication channel 5 is provided between the bearing mounting groove 4 and the bearing lubrication cavity 3 to connect the two. The lubrication channel 5 allows the oil in the bearing lubrication cavity 3 to enter the bearing mounting groove 4, so that the bearing component 6 in the bearing mounting groove 4 can be lubricated. A liquid storage tank 32 is provided in the bearing lubrication cavity 3. The liquid storage tank 32 is located below the oil inlet 31, so that the oil can be stored in the liquid storage tank 32, avoiding the oil from flowing back directly into the integrated cavity 2. This ensures the continuous lubrication effect of the oil on the bearing component 6. At the same time, the lubrication channel 5 is set in the liquid storage tank 32, which can ensure that the bearing component 6 can receive the oil from the liquid storage tank 32 without interruption. Even when the oil inlet 31 is not receiving oil, the lubrication effect can still be guaranteed for a period of time.

[0036] In this embodiment, the bearing lubrication cavity 3 and the bearing mounting groove 4 are arranged opposite to each other, i.e., the bearing mounting groove 4 is located on the back side of the bearing lubrication cavity 3, and a lubrication channel 5 is provided between them. Since the lubrication channel 5 connects the bearing mounting groove 4 and the bearing lubrication cavity 3, during use, the bearing component 6 installed on the side of the bearing mounting groove 4 can be contacted on the side of the bearing lubrication cavity 3 through the lubrication channel 5. This allows the operator to use a tool (such as a push rod) to push the bearing component 6 in the bearing mounting groove 4 from the side of the bearing lubrication cavity 3 through the lubrication channel 5, thereby pushing out the bearing component 6 in the bearing mounting groove 4. This solves the problem that the bearing component 6 cannot be easily disassembled after press-fitting, improves work efficiency, and ensures the integrity of the bearing component 6, reducing damage to the bearing component 6 during disassembly.

[0037] Example 2:

[0038] like Figure 1 , 2As shown in Figure 3, an engine with a bearing lubrication structure includes a main housing 1, an integrated cavity 2 on the main housing 1, a bearing lubrication cavity 3 connected to the integrated cavity 2, an oil inlet 31 between the integrated cavity 2 and the bearing lubrication cavity 3, a bearing mounting groove 4 on the back side of the bearing lubrication cavity 3, a lubrication channel 5 connected to the bearing mounting groove 4 and the bearing lubrication cavity 3, a liquid storage tank 32 inside the bearing lubrication cavity 3, the liquid storage tank 32 being located below the oil inlet 31, and the lubrication channel 5 being located in the liquid storage tank 32.

[0039] In this embodiment, all components and cavities are housed in the main housing 1, which is the main component housing of the engine. An integrated cavity 2 is provided on the main housing 1, and a transmission system, including gears, main shaft and countershaft, and transmission components, is installed in the integrated cavity 2. Therefore, the integrated cavity needs continuous oil lubrication. In this embodiment, an oil inlet 31 is provided between the bearing lubrication cavity 3 and the integrated cavity 2, which can transfer the oil in the integrated cavity 2 to the bearing lubrication cavity 3, so that the bearing lubrication cavity 3 can provide oil to the bearing component 6. A bearing mounting groove 4 is provided on the back side of the bearing lubrication cavity 3, and the bearing component 6 is connected in the bearing mounting groove 4. A lubrication channel 5 is provided between the bearing mounting groove 4 and the bearing lubrication cavity 3 to connect the two. The lubrication channel 5 allows the oil in the bearing lubrication cavity 3 to enter the bearing mounting groove 4, so that the bearing component 6 in the bearing mounting groove 4 can be lubricated. A liquid storage tank 32 is provided in the bearing lubrication cavity 3. The liquid storage tank 32 is located below the oil inlet 31, so that the oil can be stored in the liquid storage tank 32, avoiding the oil from flowing back directly into the integrated cavity 2. This ensures the continuous lubrication effect of the oil on the bearing component 6. At the same time, the lubrication channel 5 is set in the liquid storage tank 32, which can ensure that the bearing component 6 can receive the oil from the liquid storage tank 32 without interruption. Even when the oil inlet 31 is not receiving oil, the lubrication effect can still be guaranteed for a period of time.

[0040] In this embodiment, the bearing lubrication cavity 3 and the bearing mounting groove 4 are arranged opposite to each other, i.e., the bearing mounting groove 4 is located on the back side of the bearing lubrication cavity 3, and a lubrication channel 5 is provided between them. Since the lubrication channel 5 connects the bearing mounting groove 4 and the bearing lubrication cavity 3, during use, the bearing component 6 installed on the side of the bearing mounting groove 4 can be contacted on the side of the bearing lubrication cavity 3 through the lubrication channel 5. This allows the operator to use a tool (such as a push rod) to push the bearing component 6 in the bearing mounting groove 4 from the side of the bearing lubrication cavity 3 through the lubrication channel 5, thereby pushing out the bearing component 6 in the bearing mounting groove 4. This solves the problem that the bearing component 6 cannot be easily disassembled after press-fitting, improves work efficiency, and ensures the integrity of the bearing component 6, reducing damage to the bearing component 6 during disassembly.

[0041] like Figure 2 As shown, a partition 33 is provided between the bearing lubrication cavity 3 and the integrated cavity 2, forming a reservoir 32 between the partition 33 and the bearing lubrication cavity 3. The oil inlet 31 is located at the end of the partition 33. The partition 33 allows the reservoir 32 to be formed within the bearing lubrication cavity 3, storing the oil in the lubrication cavity 3. The partition 33 prevents the oil from flowing back into the integrated cavity 2. The oil inlet 31 is located at the end of the partition 33, thus placing the entire reservoir 32 below the oil inlet 31. This facilitates the flow of oil from the oil inlet 31 into the reservoir 32 while preventing the oil in the reservoir 32 from flowing back into the integrated cavity 2 and causing loss of lubricating oil from the bearing component 6.

[0042] like Figure 4 As shown, columnar protrusions are provided on the partition plate 33. The columnar protrusions on the partition plate 33 facilitate ejection during the casting process without causing deformation of the partition plate 33, thus improving the structural strength at that point. Simultaneously, because the columnar protrusions form a raised structure on the partition plate 33, they further limit the flow of oil in the storage tank 32. When shaking causes the oil in the storage tank 32 to flow towards the oil inlet 31, the columnar protrusions further limit the flow of oil, preventing it from directly rushing to the oil inlet 31.

[0043] like Figure 3 As shown, the bearing mounting groove 4 includes a mounting area 41 that fits against the outer ring of the bearing component 6. The bearing mounting groove 4 includes a stepped groove 42 located inside the mounting area 41. When the bearing component 6 is installed in the bearing mounting groove 4, a gap is left between the inner ring of the bearing and the stepped groove 42. The bearing mounting groove 4 includes a mounting area 41 and a stepped groove 42, wherein the stepped groove 42 is located inside the mounting area 41. Due to the stepped structure of the stepped groove 42, the mounting area 41 can be tightly connected and fitted with the outer ring of the bearing component 6, while ensuring that a certain gap is left between the inner ring of the bearing component 6 and the stepped groove 42. This ensures that the bearing component 6 will not experience interference friction during operation, and at the same time, allows the oil to flow fully within the bearing mounting groove 4, ensuring smooth operation.

[0044] like Figure 2As shown, the lubrication channel 5 includes an opening 51 provided in the bearing mounting groove 4, and the outer ring of the bearing component 6 is partially exposed at the bottom of the opening 51. The opening 51 extends through the bearing mounting groove 4 and extends to the outer ring of the bearing component 6, meaning the outer ring of the bearing component 6 is partially exposed at the opening 51. This allows workers to directly use a push rod to push out the outer ring of the bearing component 6 at the opening 51 during subsequent disassembly, avoiding the need to push out the inner ring or balls of the bearing component 6. This ensures the protection of the bearing component 6 during the pushing process, preventing structural damage.

[0045] like Figure 2 As shown, the opening 51 has a groove-shaped structure, and its position is aligned with the balls inside the bearing component 6. The groove-shaped structure of the opening 51, and its alignment with the balls of the bearing component 6, ensures better lubrication of the balls and allows the oil to be evenly distributed to the inner and outer rings of the bearing component 6 through the rolling of the balls, thus ensuring uniform lubrication.

[0046] like Figure 2 As shown, a locking protrusion 34 is provided on the side of the opening 51, protruding towards the center of the opening 51. The locking protrusion 34, with its structure protruding towards the center of the opening 51, can lock the width of the opening 51, reducing the open portion 35 at the opening 51. Furthermore, since the bottom of the opening 51 needs to extend to the outer ring of the bearing component 6, the locking protrusion 34 improves the support for the bearing component 6 during use, mitigating the uneven support caused by the opening 51 and preventing axial movement that could compromise the connection reliability between the bearing component 6 and the bearing support.

[0047] like Figure 2 As shown, a hollow portion 35 is provided inside the bearing lubrication cavity 3. The hollow portion 35 on the bearing lubrication cavity 3 can reduce the weight of the entire device, making the structure lighter.

[0048] like Figure 3 As shown, a retaining groove 43 is provided in the bearing mounting groove 4, and a retaining spring 44 is engaged with the retaining groove 43. The retaining groove 43 in the bearing mounting groove 4 can connect to the retaining spring 44, thereby limiting the bearing component 6 in the bearing mounting groove 4 and ensuring the connection stability of the bearing component 6.

[0049] The lubrication channel 5 is flush with the bottom of the liquid storage tank 32. This flush arrangement ensures that oil does not accumulate at the bottom of the liquid storage tank 32, allowing the oil to smoothly enter the bearing mounting groove 4 to lubricate the bearing component 6.

[0050] In this embodiment, the structure described above allows the bearing component 6 to be ejected from the back of the bearing mounting groove 4 during use, improving disassembly efficiency. It also provides continuous lubrication during operation, improving work quality. Furthermore, it prevents damage to the bearing component 6 during disassembly, protecting its structural integrity. It ensures uniform support for the bearing component 6, preventing localized weakening of support and reduced overall stability. Finally, it guarantees sufficient lubrication for the bearing component 6, improving the uniformity and smoothness of lubrication.

Claims

1. An engine with a bearing lubrication structure, characterized in that, The device includes a main housing, an integrated cavity on the main housing, a bearing lubrication chamber connected to the integrated cavity, an oil inlet between the integrated cavity and the bearing lubrication chamber, a bearing mounting groove on the back side of the bearing lubrication chamber, a lubrication channel connecting the bearing mounting groove and the bearing lubrication chamber, a liquid storage tank inside the bearing lubrication chamber, the liquid storage tank being located below the oil inlet, and the lubrication channel being located in the liquid storage tank.

2. An engine with a bearing lubrication structure according to claim 1, characterized in that, A partition is provided between the bearing lubrication cavity and the integrated cavity, and a liquid storage tank is formed between the partition and the bearing lubrication cavity. The oil inlet is located at the end of the partition.

3. An engine with a bearing lubrication structure according to claim 2, characterized in that, The partition plate is provided with columnar protrusions.

4. An engine with a bearing lubrication structure according to claim 1, characterized in that, The bearing mounting groove includes a mounting area that fits against the outer ring of the bearing component. The bearing mounting groove also includes a stepped groove located inside the mounting area. When the bearing component is installed in the bearing mounting groove, a gap is left between the inner ring of the bearing and the stepped groove.

5. An engine with a bearing lubrication structure according to claim 1, characterized in that, The lubrication channel includes an opening provided in the bearing mounting groove, and the outer ring of the bearing component is partially exposed at the bottom of the opening.

6. An engine with a bearing lubrication structure according to claim 5, characterized in that, The opening has a groove-shaped structure, and the opening position is aligned with the balls inside the bearing component.

7. An engine with a bearing lubrication structure according to claim 5, characterized in that, A locking protrusion is provided on the side of the opening, and the locking protrusion protrudes towards the center of the opening.

8. An engine with a bearing lubrication structure according to any one of claims 1-7, characterized in that, The bearing lubrication cavity is provided with a hollow section.

9. An engine with a bearing lubrication structure according to any one of claims 1-7, characterized in that, The bearing mounting groove is provided with a retaining groove, and a retaining spring is engaged in the retaining groove.

10. An engine with a bearing lubrication structure according to any one of claims 1-7, characterized in that, The lubrication channel is flush with the bottom of the liquid storage tank.

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