Oil leakage prevention structure of diesel engine crankcase

Abstract

The utility model belongs to the technical field of diesel engines, and discloses a diesel engine crankcase oil leakage prevention structure which comprises a shell and a shaft body, a flywheel is fixedly installed at one end of the shaft body, an annular sleeve is fixedly installed on the surface of the shaft body, and sealing rings are arranged between the two ends of the annular sleeve and the shaft body. A connecting sleeve is movably mounted on the surface of the annular sleeve, an annular groove is formed in the inner wall of the connecting sleeve, an annular plate is movably mounted in the annular groove, the annular plate is fixedly mounted on the surface of the annular sleeve, a mounting sleeve is fixedly mounted in the shell, and a clamping groove is formed in the side face of the mounting sleeve; and an inner ring groove is formed in the clamping groove, and a clamping block is fixedly installed on the surface of the connecting sleeve. By means of the device, it can be guaranteed that engine oil cannot be reduced due to leakage, the stability of the engine oil amount is kept, normal work of a lubricating system of the diesel engine can be guaranteed, friction and abrasion are reduced, and the service life of the diesel engine is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of diesel engine technology, specifically a leak-proof structure for a diesel engine crankcase. Background Technology

[0002] The crankcase, as a core component of a diesel engine, is undeniably crucial. Located below the cylinder block, it is specifically designed to mount the crankshaft, providing it with robust support and precise positioning. However, in practical use, the crankcase faces a common problem—oil leakage.

[0003] When the transmission components operate within the crankcase, engine oil flows outwards along the shaft. This flow often causes oil to leak from the tiny gaps between the shaft and the crankcase. This leakage not only wastes engine oil, but more importantly, it severely impacts the overall performance and lifespan of the diesel engine.

[0004] First, oil leaks increase friction and wear between components. Engine oil plays a crucial lubricating role in the engine, reducing direct contact between parts and thus minimizing friction and wear. However, once oil leaks, this lubrication effect is greatly weakened, and friction and wear between components will intensify. This not only reduces the efficiency of the diesel engine but also shortens its lifespan. Second, oil leaks can also allow impurities to enter the crankcase. These impurities may come from the external environment or from wear products inside the engine. Once they enter the crankcase, they contaminate the engine oil, further accelerating component wear. Simultaneously, the presence of impurities can clog the oil filter and lubrication channels, affecting the normal circulation of the oil and its lubrication effect. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides an oil leakage prevention structure for a diesel engine crankcase.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oil leakage prevention structure for a diesel engine crankcase, comprising a housing and a shaft, a flywheel fixedly mounted at one end of the shaft, an annular sleeve fixedly mounted on the surface of the shaft, and sealing rings provided between both ends of the annular sleeve and the shaft, a connecting sleeve movably mounted on the surface of the annular sleeve, and an annular groove formed on the inner wall of the connecting sleeve, an annular plate movably mounted inside the annular groove, and the annular plate fixedly mounted on the surface of the annular sleeve, an mounting sleeve fixedly mounted inside the housing, a slot formed on the side of the mounting sleeve, and an inner annular groove formed inside the slot, and a locking block fixedly mounted on the surface of the connecting sleeve, and the locking block being located inside the inner annular groove.

[0007] Preferably, there are three sets of annular grooves and annular plates, and the inner diameter of the annular groove is equal to the outer diameter of the annular plate.

[0008] Preferably, the diameter of the slot is equal to the diameter of the block, and the inner diameter of the inner ring groove is equal to the outer diameter of the block.

[0009] Preferably, the inner diameter of the mounting sleeve is equal to the outer diameter of the connecting sleeve, and the inner diameter of the connecting sleeve is equal to the outer diameter of the annular sleeve.

[0010] Preferably, the sealing ring is made entirely of rubber and is movably mounted on the surface of the shaft.

[0011] Preferably, there are two sets of the card blocks, and the two sets of card blocks are respectively fixedly installed on the two end surfaces of the connecting sleeve.

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

[0013] 1. This utility model, after installing the connecting sleeve and the mounting sleeve, allows the rotation of the shaft to cause the annular plate on the surface of the annular sleeve to slide inside the annular groove. At the same time, the use of the sealing ring ensures the sealing performance of the device during operation. Compared with traditional devices, this device can ensure that the engine oil will not decrease due to leakage, thereby maintaining a stable oil level. It also helps to ensure the normal operation of the diesel engine's lubrication system, reduce friction and wear, extend the service life of the diesel engine, and significantly reduce oil leakage and consumption, thereby reducing the frequency and cost of oil changes. This helps to reduce the operating cost of the diesel engine and improve economic efficiency.

[0014] 2. This utility model can reduce component wear caused by vibration and unstable operation through the cooperation between the annular groove and the annular plate, thereby helping to maintain the performance and efficiency of the diesel engine, extend its overall service life, and at the same time help to maintain the overall stability and reliability of the diesel engine, reduce production losses caused by downtime due to failure, and thus improve equipment reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the shaft of this utility model;

[0017] Figure 3 This utility model Figure 2 A magnified view of the structure at point A in the middle;

[0018] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0019] In the diagram: 1. Housing; 2. Shaft; 3. Flywheel; 4. Annular sleeve; 5. Sealing ring; 6. Connecting sleeve; 7. Annular groove; 8. Annular plate; 9. Mounting sleeve; 10. Slot; 11. Inner annular groove; 12. Locking block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 4 As shown, this utility model provides an oil leakage prevention structure for a diesel engine crankcase, including a housing 1 and a shaft 2. A flywheel 3 is fixedly installed at one end of the shaft 2. An annular sleeve 4 is fixedly installed on the surface of the shaft 2, and sealing rings 5 ​​are provided between both ends of the annular sleeve 4 and the shaft 2. A connecting sleeve 6 is movably installed on the surface of the annular sleeve 4, and an annular groove 7 is provided on the inner wall of the connecting sleeve 6. An annular plate 8 is movably installed inside the annular groove 7, and the annular plate 8 is fixedly installed on the surface of the annular sleeve 4. An installation sleeve 9 is fixedly installed inside the housing 1. A slot 10 is provided on the side of the installation sleeve 9, and an inner annular groove 11 is provided inside the slot 10. A locking block 12 is fixedly installed on the surface of the connecting sleeve 6, and the locking block 12 is located inside the inner annular groove 11.

[0022] The above solution ensures that the engine oil level will not decrease due to leakage, thus maintaining a stable oil level. It also helps ensure the normal operation of the diesel engine's lubrication system, reduces friction and wear, and extends the service life of the diesel engine. At the same time, it can significantly reduce oil leakage and consumption, thereby reducing the frequency and cost of oil changes, which helps to reduce the operating cost of the diesel engine and improve economic efficiency.

[0023] As shown in the figure, there are three sets of annular grooves 7 and annular plates 8. The inner diameter of the annular groove 7 is equal to the outer diameter of the annular plate 8.

[0024] The above scheme is adopted: by setting three sets of annular grooves 7 and annular plates 8, and setting the inner diameter of the annular grooves 7 and the outer diameter of the annular plates 8 to be equal, the annular sleeve 4 is made more stable when rotating.

[0025] like Figure 4 As shown, the diameter of the slot 10 is equal to the diameter of the block 12, and the inner diameter of the inner ring groove 11 is equal to the outer diameter of the block 12.

[0026] The above solution is adopted: by setting the diameter of the slot 10 and the diameter of the block 12 to be equal, and setting the inner diameter of the inner ring groove 11 and the outer diameter of the block 12 to be equal, the block 12 becomes more stable when entering the slot 10 and the inner ring groove 11.

[0027] like Figure 4 As shown, the inner diameter of the mounting sleeve 9 is equal to the outer diameter of the connecting sleeve 6, and the inner diameter of the connecting sleeve 6 is equal to the outer diameter of the annular sleeve 4.

[0028] The above solution is adopted: by setting the inner diameter of the mounting sleeve 9 to be equal to the outer diameter of the connecting sleeve 6, the connecting sleeve 6 fits more snugly inside the mounting sleeve 9; by setting the inner diameter of the connecting sleeve 6 to be equal to the outer diameter of the annular sleeve 4, the annular sleeve 4 fits more snugly inside the connecting sleeve 6.

[0029] like Figure 2 As shown, the sealing ring 5 is made entirely of rubber and is movably mounted on the surface of the shaft 2;

[0030] The above solution is adopted: by making the sealing ring 5 entirely of rubber, and movably mounting the sealing ring 5 on the surface of the shaft 2, the rubber has good sealing performance.

[0031] like Figure 4 As shown, there are two sets of locking blocks 12, and the two sets of locking blocks 12 are fixedly installed on the two end surfaces of the connecting sleeve 6 respectively.

[0032] The above solution is adopted: by setting two sets of locking blocks 12, and fixing the two sets of locking blocks 12 to the two ends of the connecting sleeve 6 respectively, the firmness between the connecting sleeve 6 and the mounting sleeve 9 is strengthened.

[0033] Working principle and usage process of this utility model:

[0034] In use, the operator first installs the connecting sleeve 6 and the mounting sleeve 9. After the locking block 12 is engaged inside the slot 10, the connecting sleeve 6 is rotated so that the locking block 12 enters the inner ring groove 11 and is then assembled. When the device is running, the rotation of the shaft 2 drives the entire annular sleeve 4 to rotate, thereby causing the annular plate 8 to slide inside the annular groove 7, thus ensuring the overall stability of the annular sleeve 4. At the same time, the use of the sealing ring 5 ensures the sealing effect of the shaft 2 during rotation.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil leakage preventing structure for a diesel engine crankcase comprising a housing (1) and a shaft body (2), characterized in that: One end of the shaft body (2) is fixedly installed with a flywheel (3), the surface of the shaft body (2) is fixedly installed with an annular sleeve (4), and the both ends of the annular sleeve (4) are provided with sealing rings (5) between the shaft body (2), the surface of the annular sleeve (4) is movably installed with a connecting sleeve (6), and the inner wall of the connecting sleeve (6) is provided with an annular groove (7), the inside of the annular groove (7) is movably installed with an annular plate (8), and the annular plate (8) is fixedly installed on the surface of the annular sleeve (4), the inside of the shell (1) is fixedly installed with a mounting sleeve (9), the side of the mounting sleeve (9) is provided with a clamping groove (10), and the inside of the clamping groove (10) is provided with an inner ring groove (11), the surface of the connecting sleeve (6) is fixedly installed with a clamping block (12), and the clamping block (12) is located in the inside of the inner ring groove (11).

2. The oil leakage preventing structure for a diesel engine crankcase according to claim 1, characterized by: The number of the annular groove (7) and the annular plate (8) is three groups, and the inner diameter value of the annular groove (7) is equal to the outer diameter value of the annular plate (8).

3. The oil leakage preventing structure for a diesel engine crankcase according to claim 1, characterized by: The diameter value of the clamping groove (10) is equal to the diameter value of the clamping block (12), and the inner diameter value of the inner ring groove (11) is equal to the outer diameter value of the clamping block (12).

4. The oil leakage preventing structure for a diesel engine crankcase according to claim 1, characterized by: The inner diameter value of the mounting sleeve (9) is equal to the outer diameter value of the connecting sleeve (6), and the inner diameter value of the connecting sleeve (6) is equal to the outer diameter value of the annular sleeve (4).

5. The oil leakage preventing structure for a diesel engine crankcase according to claim 1, characterized by: The sealing ring (5) is made of rubber, and the sealing ring (5) is movably installed on the surface of the shaft body (2).

6. The oil leakage preventing structure for a diesel engine crankcase according to claim 1, characterized by: The number of the clamping block (12) is two groups, and the two groups of clamping blocks (12) are fixedly installed on the surfaces of the both ends of the connecting sleeve (6).

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