Crankshaft assembly with lubrication assembly for twin-cylinder outboard motor

Abstract

The application discloses a crankshaft assembly with a lubricating component for a twin-cylinder outboard engine, which comprises a crankshaft first body and a crankshaft second body, the crankshaft first body and the crankshaft second body are each connected with a group of cranks, a connecting rod journal is arranged in the middle of the crank, the connecting rod journal is connected with a crank connecting rod, an end of the two groups of cranks is each provided with a butt joint column, and butt joint components are arranged at the connection positions of the two butt joint columns; an installation part is arranged at one end of the crankshaft first body, a liquid inlet hole is arranged on the installation part, a sleeving ring is rotatably sleeved on the installation part, a fixing column is arranged at the top of the sleeving ring, a fixing block is connected with the top end of the fixing column, and a circulating mechanism with a purifying engine oil function is arranged below the crankshaft first body and the crankshaft second body. The butt joint components are arranged, the structures of the butt joint components are matched with each other, the split crankshaft can be quickly installed and disassembled during use, and the working pressure of maintenance personnel is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of outboard motor components, specifically to a crankshaft assembly with a lubrication system for a twin-cylinder outboard motor. Background Technology

[0002] Outboard motors, also known as outboard engines, are propulsion engines mounted on the outside of the hull (ship's side), typically suspended on the outer side of the stern plate. Outboard motors are highly integrated and easy to install and purchase, making them the preferred power source for personal recreational boats. They are also widely used in fishing, commercial operations, and government law enforcement. The crankshaft of the outboard motor is the most important component of the engine. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft to drive other accessories on the engine. The crankshaft is subjected to the combined effects of centrifugal force from the rotating mass, periodically changing gas inertial force, and reciprocating inertial force, resulting in bending and torsional loads on the crankshaft bearings. Therefore, the crankshaft requires sufficient strength and rigidity, and the journal surfaces must be wear-resistant, operate evenly, and have good balance.

[0003] The existing split crankshaft for outboard motors requires operators to disassemble it without affecting its performance. This places extremely high demands on maintenance personnel and is very difficult to disassemble. In addition, the split crankshaft has poor internal lubrication during operation, which can affect engine performance due to friction. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a crankshaft assembly with a lubrication system for a twin-cylinder outboard motor, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crankshaft assembly with a lubrication component for a twin-cylinder outboard motor, comprising a first crankshaft body and a second crankshaft body, each of the first and second crankshaft bodies being connected to a set of cranks, a connecting rod journal being provided in the middle of each crank, the connecting rod journal being connected to a crankshaft connecting rod, a docking post being provided at the end of each of the two sets of cranks, and a docking component being provided at the connection point of the left and right docking posts; a mounting part being provided at one end of the first crankshaft body, the mounting part being provided with a liquid inlet hole, a sleeve ring being rotatably sleeved on the mounting part, a fixing post being provided at the top of the sleeve ring, a fixing block being connected to the top of the fixing post, and a circulation mechanism with an oil purification function being provided below the first and second crankshaft bodies.

[0006] Preferably, the connecting rod journal is a hollow structure with several mounting holes. A movable ball is rotatably installed in the mounting holes, and the large end of the crankshaft connecting rod is rotatably sleeved on the connecting rod journal.

[0007] Preferably, the docking post is a hollow structure, with the right-end docking post inserted into the left-end docking post. The docking assembly includes a connecting sleeve that is slidably fitted onto the left-end docking post. The connecting sleeve has an inner cavity. A protruding ring is provided on the outer wall of the left-end docking post, and the protruding ring is located in the inner cavity. A tensioning spring is connected between the side wall of the protruding ring and the left half of the side wall of the inner cavity. A first rack is provided on the right half of the inner cavity. A bottom groove is provided on the left-end docking post. A gear is rotatably installed in the bottom groove. The gear meshes with the first rack. A positioning plate is slidably provided in the bottom groove. A second rack is provided on the side wall of the positioning plate. The second rack meshes with the gear.

[0008] Preferably, a positioning hole is provided at the end of the right-side docking column, and the positioning hole corresponds to the positioning plate.

[0009] Preferably, the circulation mechanism includes a bottom shell with a concave arc surface on the upper surface and a bottom hole on the bottom shell. A rotating column is rotatably installed in the bottom hole. A helical blade is provided at the lower end of the rotating column, and a second transmission tooth is provided at the upper end of the rotating column. A first transmission tooth is provided on the second body of the crankshaft, and the first transmission tooth and the second transmission tooth are meshed together.

[0010] Preferably, the bottom shell has an internal flow hole inside, one end of which is connected to the bottom hole, and the other end of the internal flow hole is connected to a bottom pipe, which is connected to a filter cylinder.

[0011] Preferably, the filter cartridge is provided with an inner filter element, the top of the inner filter element is connected to a top tube, the top of the top tube is connected to a connecting block, the upper end of the connecting block is connected to a return pipe, and the return pipe is connected to a fixed block.

[0012] Preferably, a one-way valve is provided inside the jacking pipe.

[0013] Preferably, the side wall of the filter cylinder is connected to a side inlet pipe, the side inlet pipe is connected to an outer cylinder, a piston head is movably arranged inside the outer cylinder, a compression spring is connected to the top of the piston head, a side pipe is provided on the side wall of the outer cylinder, and the side pipe is connected to the connecting block.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features a docking assembly with mutually cooperating structures, allowing for quick installation and disassembly of a split crankshaft, reducing the workload of maintenance personnel. During installation, simply insert the right docking post into the left docking post, then tighten the spring to push the connecting sleeve forward, causing the gear to rotate and the positioning plate to descend. The positioning plate is then inserted into the positioning hole, thus fixing the two docking posts together. During disassembly, simply push the connecting sleeve to the left and then separate the two docking posts to the sides. The connection is secure and the operation is simple. 2. When the outboard motor is in use, add engine oil to the engine. Under the influence of gravity, the oil falls into the bottom housing and then flows into the bottom hole. When the crankshaft rotates, the first transmission gear rotates and drives the rotor to rotate through the second transmission gear. This causes the helical blades to draw the oil into the inner flow hole. The oil flows through the inner flow hole and enters the filter cartridge through the bottom pipe. Then, the oil is filtered by the inner filter element and enters the connecting block through the top pipe. Then, it enters the fixed block through the return pipe. Finally, the oil enters the connecting ring and enters the crankshaft first body through the inlet hole. The oil fills the connecting rod journal and overflows through the movable ball, which can greatly increase the lubrication effect between the connecting rod journal and the large end. 3. During the circulation of engine oil, impurities inside are filtered out by the inner filter element, ensuring the lubrication effect of the engine oil. When the equipment has been used for a long time, if the inner filter element is clogged, the engine oil cannot pass through. At this time, the oil pressure inside the filter cylinder increases and enters the outer cylinder through the side pipe. As the oil pressure increases to a certain level, the piston head is pushed up, and the engine oil can enter the connecting block through the side pipe for emergency use, preventing damage to the equipment caused by insufficient engine oil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device structure of the present invention.

[0016] Figure 2 This is a structural diagram of the docking component of the present invention.

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0018] Figure 4 This is a structural diagram of the filter cartridge of the present invention.

[0019] Figure 5 This is a connection diagram of the first crankshaft body and the second crankshaft body of the present invention.

[0020] Figure 6 for Figure 5 Schematic diagram of the middle section.

[0021] In the diagram: 1. First crankshaft body; 2. Second crankshaft body; 3. Crank; 4. Connecting rod journal; 401. Moving ball; 5. Crankshaft connecting rod; 501. Large end; 6. Mounting part; 7. Liquid inlet; 8. Connecting post; 9. Connecting sleeve; 10. Inner cavity; 11. Convex ring; 12. Tightening spring; 13. First rack; 14. Bottom groove; 15. Gear; 16. Positioning plate; 16. Second rack; 1601; Positioning hole; 17. First transmission gear; 18. Bottom shell; 19. Bottom hole; 20. Rotating column; 21. Spiral blade; 22. Second transmission gear; 23. Bottom tube; 24. Filter cylinder; 25. Inner filter element; 26. Top tube; 27. Connecting block; 28. Return pipe; 29. ​​Fixing block; 30. Fixing post; 31. Sleeve ring; 32. Side lead pipe; 33. Outer cylinder; 34. Piston head; 35. Downward pressure spring; 36. Side connecting pipe; 37. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 6 This invention provides a technical solution: a crankshaft assembly with a lubrication component for a twin-cylinder outboard motor, comprising a first crankshaft body 1 and a second crankshaft body 2, both of which are hollow structures. Each crankshaft body 1 and crankshaft body 2 is connected to a set of cranks 3. A connecting rod journal 4 is provided in the middle of the cranks 3. The connecting rod journal 4 is connected to a crankshaft connecting rod 5. The connecting rod journal 4 is hollow and has several mounting holes. A movable ball 401 is rotatably installed in the mounting holes. The large end 501 of the crankshaft connecting rod 5 is rotatably sleeved on the connecting rod journal 4. When the connecting rod journal 4 is filled with engine oil, the movable ball 401 rotates to carry the engine oil out, thereby lubricating the connection.

[0024] Each end of the two sets of cranks 3 is provided with a docking post 8. A docking assembly is provided at the connection between the left and right docking posts 8. The docking post 8 is a hollow structure. The right docking post 8 is inserted into the left docking post 8. The two docking posts 8 are connected, so that the first crankshaft body 1 and the second crankshaft body 2 at both ends are connected. The docking assembly includes a connecting sleeve 9 that slides on the left docking post 8. The connecting sleeve 9 is provided with an inner cavity 10. A protruding ring 11 is provided on the outer wall of the left docking post 8. The protruding ring 11 is located in the inner cavity 10. The side wall of the protruding ring 11 A clamping spring 12 is connected between the inner cavity 10 and the left half of the side wall. A first rack 13 is provided on the right half of the inner cavity 10. A bottom groove 14 is provided on the left end docking post 8. A gear 15 is rotatably installed in the bottom groove 14. The gear 15 and the first rack 13 are meshed. A positioning plate 16 is slidably provided in the bottom groove 14. A second rack 1601 is provided on the side wall of the positioning plate 16. The second rack 1601 and the gear 15 are meshed. A positioning hole 17 is provided at the end of the right end docking post 8. The positioning hole 17 corresponds to the positioning plate 16. During installation, simply insert the right-side docking post 8 into the left-side docking post 8, then tighten the spring 12 to push the connecting sleeve 9 forward, thereby causing the gear 15 to rotate and the positioning plate 16 to descend. The positioning plate 16 is then inserted into the positioning hole 17, thus fixing the two docking posts 8 together. During disassembly, simply push the connecting sleeve 9 to the left and then separate the two docking posts 8 to the sides. The connection is secure and the operation is simple.

[0025] A mounting part 6 is provided at one end of the first crankshaft body 1. The mounting part 6 is provided with an inlet hole 7. A sleeve ring 32 is rotatably sleeved on the mounting part 6. A fixing post 31 is provided on the top of the sleeve ring 32. A fixing block 30 is connected to the top of the fixing post 31. A circulation mechanism with oil purification function is provided below the first crankshaft body 1 and the second crankshaft body 2. The circulation mechanism includes a bottom shell 19. The upper surface of the bottom shell 19 is a concave arc surface. A bottom hole 20 is provided on the bottom shell 19. The concave arc surface is recessed at the bottom hole 20. Oil will flow into the bottom hole 20. A rotating post 21 is rotatably installed in the bottom hole 20. A spiral blade 22 is provided at the lower end of the rotating post 21. A second transmission tooth 23 is provided at the upper end of the rotating post 21. A first transmission tooth 18 is provided on the second crankshaft body 2. The first transmission tooth 18 and the second transmission tooth 23 are meshed and connected. The bottom shell 19 has an internal flow hole inside, one end of which is connected to the bottom hole 20. The other end of the internal flow hole is connected to a bottom pipe 24. The bottom pipe 24 is connected to a filter cartridge 25. When the engine is running, the movement of parts will generate metal shavings, which, along with dust, carbon deposits from combustion oxidation, and some water vapor, will continuously mix into the engine oil. Too many impurities in the engine oil will reduce the lubrication effect. The filter cartridge 25 has an inner filter element 26 inside. Engine oil enters the filter cartridge 25 and then passes through the inner filter element 26, which can block most of the impurities in the engine oil from the outside. The top of the inner filter element 26 is connected to a top pipe 27. The top of the top pipe 27 is connected to a connecting block 28. The upper end of the connecting block 28 is connected to a return pipe 29. The return pipe 29 is connected to a fixed block 30. When the outboard motor is in use, engine oil is added to the engine. Under the influence of gravity, the oil falls into the bottom housing 19 and then flows into the bottom hole 20. When the crankshaft rotates, the first transmission gear 18 rotates and drives the rotating column 21 to rotate through the second transmission gear 23. This causes the spiral blade 22 to draw the oil into the inner flow hole. The oil flows through the inner flow hole and enters the filter cartridge 25 through the bottom pipe 24. Then, the oil is filtered through the inner filter element 26 and enters the connecting block 28 through the top pipe 27. Then, it enters the fixed block 30 through the return pipe 29. The oil then enters the connecting ring 32 and enters the crankshaft first body 1 through the inlet hole 7. The oil fills the connecting rod journal 4 and overflows through the movable ball 401, which can greatly increase the lubrication effect between the connecting rod journal 4 and the large end 501.

[0026] The filter cartridge 25 is connected to a side inlet pipe 33, which is connected to an outer cylinder 34. A piston head 35 is movably mounted inside the outer cylinder 34, and a pressure spring 36 is connected to the top of the piston head 35. A side pipe 37 is mounted on the side wall of the outer cylinder 34, and the side pipe 37 is connected to the connecting block 28. A one-way valve is installed inside the top pipe 27. After the oil enters the connecting block 28 through the side pipe 37, it will not enter the inner filter element 26. When the equipment has been used for a long time, if the inner filter element 26 is blocked, the oil cannot pass through. At this time, the oil pressure inside the filter cartridge 25 increases and enters the outer cylinder 34 through the side inlet pipe 33. As the oil pressure increases to a certain level, the piston head 35 is pushed upward, and the oil can enter the connecting block 28 through the side pipe 37 for emergency use, preventing the equipment from being damaged due to insufficient oil in the engine.

[0027] In actual use, the docking components cooperate with each other, allowing for quick installation and disassembly of the split crankshaft, reducing the workload of maintenance personnel. During installation, simply insert the right docking post 8 into the left docking post 8, then tighten the spring 12 to push the connecting sleeve 9 forward, causing the gear 15 to rotate and the positioning plate 16 to descend. The positioning plate 16 inserts into the positioning hole 17, thus fixing the two docking posts 8 together. During disassembly, simply push the connecting sleeve 9 to the left and separate the two docking posts 8 to the sides. The connection is secure and the operation is simple. When the outboard motor is in use, add engine oil. Under the influence of gravity, the oil falls into the bottom housing 19 and then flows into the bottom hole 20. When the crankshaft rotates, the first transmission gear 18 rotates and drives the rotating column 21 to rotate through the second transmission gear 23, causing the spiral blades 22 to draw the oil into the inner flow hole. The oil flows along... The oil flows through the inner orifice and enters the filter cartridge 25 through the bottom pipe 24. Then, the oil is filtered through the inner filter element 26 and enters the connecting block 28 through the top pipe 27. Then, it enters the fixed block 30 through the return pipe 29. The oil then enters the connecting ring 32 and enters the crankshaft first body 1 through the inlet hole 7. The oil fills the connecting rod journal 4 and overflows through the movable ball 401, which can greatly increase the lubrication effect between the connecting rod journal 4 and the large end 501. When the oil is circulating, the inner filter element 26 can filter out the impurities inside, ensuring the lubrication effect of the oil. When the equipment is used for a long time, if the inner filter element 26 is blocked, the oil cannot pass through. At this time, the oil pressure inside the filter cartridge 25 increases and enters the outer cylinder 34 through the side pipe 33. As the oil pressure increases to a certain extent, the piston head 35 is pushed up, and the oil can enter the connecting block 28 through the side pipe 37 for emergency use, preventing the equipment from being damaged due to insufficient oil in the engine.

[0028] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crankshaft assembly with lubrication components for a twin-cylinder outboard motor, comprising a first crankshaft body (1) and a second crankshaft body (2), characterized in that: The crankshaft first body (1) and crankshaft second body (2) are each connected to a set of cranks (3). A connecting rod journal (4) is provided in the middle of the cranks (3). The connecting rod journal (4) is connected to the crankshaft connecting rod (5). A docking post (8) is provided at the end of each of the two sets of cranks (3). A docking assembly is provided at the connection between the left and right docking posts (8). The docking post (8) is a hollow structure. The right docking post (8) is inserted into the left docking post (8). The docking assembly includes a connecting sleeve (9) that slides on the left docking post (8). An inner cavity (10) is provided inside the connecting sleeve (9). A convex ring (11) is provided on the outer wall of the left docking post (8). The convex ring (11) is located in the inner cavity. In the cavity (10), a clamping spring (12) is connected between the side wall of the convex ring (11) and the left half of the side wall of the inner cavity (10). A first rack (13) is provided on the right half of the inner cavity (10). A bottom groove (14) is provided on the left end docking post (8). A gear (15) is rotatably installed in the bottom groove (14). The gear (15) and the first rack (13) are meshed and connected. A positioning plate (16) is slidably provided in the bottom groove (14). A positioning hole (17) is provided at the end of the right end docking post (8). The positioning hole (17) and the positioning plate (16) are corresponding. A second rack (1601) is provided on the side wall of the positioning plate (16). The second rack (1601) and the gear (15) are meshed and connected. An installation part (6) is provided at one end of the first crankshaft body (1). An inlet hole (7) is provided on the installation part (6). A sleeve ring (32) is rotatably sleeved on the installation part (6). A fixing post (31) is provided at the top of the sleeve ring (32). A fixing block (30) is connected to the top of the fixing post (31). A circulation mechanism with oil purification function is provided below the first crankshaft body (1) and the second crankshaft body (2).

2. The crankshaft assembly with lubrication system for a twin-cylinder outboard motor according to claim 1, characterized in that: The connecting rod journal (4) is a hollow structure. Several mounting holes are provided on the connecting rod journal (4). Movable balls (401) are rotatably installed in the mounting holes. The large end (501) of the crankshaft connecting rod (5) is rotatably sleeved on the connecting rod journal (4).

3. A crankshaft assembly with lubrication system for a twin-cylinder outboard motor according to claim 1, characterized in that: The circulation mechanism includes a bottom shell (19), the upper surface of the bottom shell (19) is a concave arc surface, a bottom hole (20) is provided on the bottom shell (19), a rotating column (21) is rotatably installed in the bottom hole (20), a spiral blade (22) is provided at the lower end of the rotating column (21), a second transmission tooth (23) is provided at the upper end of the rotating column (21), and a first transmission tooth (18) is provided on the second body (2) of the crankshaft, and the first transmission tooth (18) and the second transmission tooth (23) are meshed and connected.

4. A crankshaft assembly with lubrication system for a twin-cylinder outboard motor according to claim 3, characterized in that: The bottom shell (19) is provided with an internal flow hole. One end of the internal flow hole is connected to the bottom hole (20), and the other end of the internal flow hole is connected to a bottom pipe (24). The bottom pipe (24) is connected to a filter cylinder (25).

5. A crankshaft assembly with lubrication system for a twin-cylinder outboard motor according to claim 4, characterized in that: The filter cartridge (25) is provided with an inner filter element (26), the top of the inner filter element (26) is connected to a top tube (27), the top of the top tube (27) is connected to a connecting block (28), the upper end of the connecting block (28) is connected to a return pipe (29), and the return pipe (29) is connected to the fixing block (30).

6. A crankshaft assembly with lubrication system for a twin-cylinder outboard motor according to claim 5, characterized in that: A one-way valve is installed inside the jacking pipe (27).

7. A crankshaft assembly with lubrication system for a twin-cylinder outboard motor according to claim 4, characterized in that: The filter cylinder (25) is connected to a side inlet pipe (33) on its side wall. The side inlet pipe (33) is connected to an outer cylinder (34). A piston head (35) is movably installed inside the outer cylinder (34). A compression spring (36) is connected to the top of the piston head (35). A side pipe (37) is installed on the side wall of the outer cylinder (34). The side pipe (37) is connected to the connecting block (28).

Images