Engine crankshaft with buffer structure

Abstract

The utility model discloses an engine crankshaft with a buffer structure, which belongs to the technical field of engine crankshafts and comprises a base, a plurality of sliding blocks slidably mounted on the base, a moving plate fixedly mounted at the bottom ends of the sliding blocks, a second inserting rod and a first inserting rod fixedly mounted at the bottom end of the moving plate, and a fixed pressing plate fixedly mounted at the bottom end of the second inserting rod. A push rod is fixedly mounted at the bottom end of the first insertion rod, the bottom end of the push rod slidably abuts against a sliding pressing plate, a connecting spring is fixedly mounted on one side of the sliding pressing plate, two supporting springs are fixedly mounted at the bottom end of the moving plate, and a cushion block is fixedly mounted at the top end of the sliding block. The spring and the inserting rod which are arranged on the base play a buffering role, meanwhile, the small spring and the extrusion block are matched with the gasket to further reduce internal friction and absorb impact, durability of the crankshaft is improved, vibration and noise in the operation process can be reduced, the service life of the crankshaft is greatly prolonged, and stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine crankshafts, in particular to an engine crankshaft with a buffer structure. Background Art

[0002] The engine crankshaft is one of the core components of the internal combustion engine. It is responsible for converting the reciprocating power from the connecting rod into rotational power and transmitting it to other accessories such as generators and water pumps through the output end. During operation, the crankshaft needs to withstand the high pressure generated by the explosion of the fuel and the centrifugal force generated by the rotation of the crankshaft itself. Therefore, its design and manufacturing have extremely high requirements on the performance of materials. With the continuous advancement of technology, in order to meet the needs of more efficient and environmentally friendly engine design, engine crankshafts with buffer structures have come into being. The main purpose of this design is to reduce the vibration and noise during engine operation and improve the stability and ride comfort of the engine. In addition, it also helps to extend the life of the engine because the buffer structure can reduce the impact load on the crankshaft when it rotates at high speed.

[0003] The crankshafts in most existing internal combustion engines continuously withstand the periodically changing gas pressure transmitted by the piston-connecting rod group and convert it into rotational motion. The crankshaft is subjected to gas pressure and inertial force during operation, which can easily cause vibration displacement, fatigue damage and increased noise, affecting the performance and life of the internal combustion engine. Therefore, we propose an engine crankshaft with a buffer structure to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide an engine crankshaft with a buffer structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The invention relates to an engine crankshaft with a buffer structure, comprising: a base, a plurality of sliding blocks slidably mounted on the base, a movable plate fixedly mounted on the bottom end of the sliding block, a second plug rod and a first plug rod fixedly mounted on the bottom end of the movable plate, a fixed pressure plate fixedly mounted on the bottom end of the second plug rod, a mounting spring fixedly mounted on the bottom end of the fixed pressure plate, a pushing rod fixedly mounted on the bottom end of the first plug rod, the bottom end of the pushing rod slides against the sliding pressure plate, a connecting spring fixedly mounted on one side of the sliding pressure plate, two supporting springs fixedly mounted on the bottom end of the movable plate, a pad fixedly mounted on the top end of the sliding block, two supporting plates fixedly mounted on the top end of the base, and a crankshaft assembly is arranged between the two support plates.

[0007] Preferably, the crankshaft assembly includes multiple left balancing blocks and multiple right balancing blocks, and the bottom of the left balancing block and the top of the right balancing block are fixedly installed with column journals, wherein two of the column journals are rotatably installed in corresponding support plates, and a connecting rod journal is fixedly installed between the left balancing block and the right balancing block, and a long connecting rod is rotatably installed on the connecting rod journal, and washers are fixedly installed on both sides of the long connecting rod, and two washers are sleeved on the connecting rod journal, and the two washers are respectively movably abutted against two fixed ring blocks.

[0008] Preferably, a plurality of small springs are fixedly installed inside the left balancing block and the right balancing block, an extrusion block is fixedly installed on one side of the small spring, the extrusion blocks are movably abutted against one side of the gasket, a limiting ring is integrally formed on one side adjacent to the left balancing block and the right balancing block, and the fixed ring block and the gasket are rotatably installed in the limiting ring.

[0009] Preferably, both the left balancing block and the right balancing block are provided with mounting circular grooves, the small spring is fixedly mounted in the mounting circular grooves, and the extrusion block is slidably mounted in the mounting circular grooves.

[0010] Preferably, a sliding groove matching the movable plate is provided on the base, the movable plate is slidably installed in the sliding groove, and the two supporting springs are respectively sleeved on the outside of the second insertion rod and the first insertion rod.

[0011] Preferably, a movable groove matching the fixed pressure plate is provided in the base, a plug-in groove matching the sliding block is provided in the base, a limiting sliding groove matching the cushion block is provided at the top of the base, and a flywheel end is fixedly installed on one side of one of the column shaft necks.

[0012] In the utility model, the engine crankshaft with a buffer structure drives a plurality of long connecting rods rotatably installed between the left and right balancing blocks to move, so that the bottom ends thereof are movably abutted against the top ends of the cushion blocks, thereby squeezing the cushion blocks, and the cushion blocks drive the sliding blocks and the moving plates to squeeze the two supporting springs and the second plug rod and the first plug rod, and buffering is performed through the two supporting springs, while the second plug rod and the pushing rod respectively drive the fixed pressing plate and the pushing rod to press down, so that the fixed pressing plate squeezes the installation spring, and the pushing rod pushes the sliding pressing plate to squeeze the connecting spring, thereby performing force division buffering;

[0013] In the utility model, the engine crankshaft with a buffer structure is buffered by the cooperation of the fixed ring blocks arranged on both sides of the long connecting rod and the two washers sleeved on the connecting rod journal and the cooperation of the multiple small springs and the extrusion blocks fixedly installed in the left balancing block and the right balancing block. At the same time, the fixed ring blocks and washers fixedly installed on both sides of the long connecting rod are rotatably installed in the limiting rings integrally formed on the left balancing block and the right balancing block, so as to prevent displacement;

[0014] The utility model has a reasonable structural design. The spring and the plug rod arranged on the base have a buffering effect to maintain the stable rotation of the crankshaft. At the same time, the small spring, the extrusion block and the gasket further reduce the internal friction and absorb the impact, thereby improving the durability of the crankshaft, reducing vibration and noise during operation, greatly extending the service life of the crankshaft and improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of an engine crankshaft with a buffer structure proposed by the utility model;

[0016] Figure 2 This is a partial structural schematic diagram of an engine crankshaft with a buffer structure proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the partial structure of an engine crankshaft with a buffer structure proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the partial structural disassembly of an engine crankshaft with a buffer structure proposed by the utility model;

[0019] Figure 5 The utility model is a schematic cross-sectional view of the local structure of an engine crankshaft with a buffer structure.

[0020] In the figure: 1. base; 2. flywheel end; 3. support plate; 4. left balancing block; 5. long connecting rod; 6. right balancing block; 7. cushion block; 8. column journal; 9. fixed ring block; 10. gasket; 11. limiting ring; 12. extrusion block; 13. small spring; 14. connecting rod journal; 15. sliding block; 16. second plug rod; 17. first plug rod; 18. fixed pressure plate; 19. support spring; 20. push rod; 21. sliding pressure plate; 22. connecting spring; 23. mounting spring; 24. moving plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5, an engine crankshaft with a buffer structure comprises: a base 1, a plurality of sliding blocks 15 are slidably mounted on the base 1, a moving plate 24 is fixedly mounted on the bottom end of the sliding block 15, a second plug rod 16 and a first plug rod 17 are fixedly mounted on the bottom end of the moving plate 24, a fixed pressure plate 18 is fixedly mounted on the bottom end of the second plug rod 16, a mounting spring 23 is fixedly mounted on the bottom end of the fixed pressure plate 18, a push rod 20 is fixedly mounted on the bottom end of the first plug rod 17, the bottom end of the push rod 20 slides against the sliding pressure plate 21, a connecting spring 22 is fixedly mounted on one side of the sliding pressure plate 21, two supporting springs 19 are fixedly mounted on the bottom end of the moving plate 24, a cushion block 7 is fixedly mounted on the top end of the sliding block 15, two supporting plates 3 are fixedly mounted on the top end of the base 1, and a crankshaft assembly is arranged between the two supporting plates 3.

[0023] In this embodiment, the crankshaft assembly includes multiple left balancing blocks 4 and multiple right balancing blocks 6, multiple left balancing blocks 4 and multiple right balancing blocks 6, the bottom of the left balancing block 4 and the top of the right balancing block 6 are fixedly installed with column journals 8, wherein two column journals 8 are rotatably installed in the corresponding support plates 3, a connecting rod journal 14 is fixedly installed between the left balancing block 4 and the right balancing block 6, a long connecting rod 5 is rotatably installed on the connecting rod journal 14, washers 10 are fixedly installed on both sides of the long connecting rod 5, two washers 10 are sleeved on the connecting rod journal 14, and the two washers 10 are respectively movably abutted against two fixed ring blocks 9 for better buffering.

[0024] In this embodiment, a plurality of small springs 13 are fixedly installed inside the left balancing block 4 and the right balancing block 6, and an extrusion block 12 is fixedly installed on one side of the small spring 13. The extrusion blocks 12 are movably abutted against one side of the gasket 10. A limiting ring 11 is integrally formed on one side adjacent to the left balancing block 4 and the right balancing block 6, and the fixed ring block 9 and the gasket 10 are rotatably installed in the limiting ring 11 for better sliding.

[0025] In this embodiment, the left balance block 4 and the right balance block 6 are both provided with mounting circular grooves, the small spring 13 is fixedly installed in the mounting circular grooves, the extrusion block 12 is slidably installed in the mounting circular grooves, and further buffering is performed. A sliding groove matching the movable plate 24 is provided on the base 1, and the movable plate 24 is slidably installed in the sliding groove. The two support springs 19 are respectively mounted on the outside of the second plug rod 16 and the first plug rod 17 to better buffer.

[0026] In this embodiment, a movable groove matching the fixed pressure plate 18 is opened in the base 1, and a plug-in groove matching the sliding block 15 is opened in the base 1 for better sliding, thereby providing buffering. A limiting sliding groove matching the pad 7 is opened at the top of the base 1, and a flywheel end 2 is fixedly installed on one side of one column journal 8 for better rotation.

[0027] In this embodiment, when in use, the column journal 8 is driven to rotate at the flywheel end 2 to move the multiple long connecting rods 5 connected in rotation. When the long connecting rod 5 moves, its bottom end is movably abutted against the top of the cushion block 7 to squeeze the cushion block 7. The cushion block 7 drives the sliding block 15 and the moving plate 24 fixedly installed at its bottom end to squeeze the two supporting springs 19 and the second plug rod 16 and the first plug rod 17. The two supporting springs 19 are used for buffering. At the same time, the second plug rod 16 and the push rod 20 respectively drive the fixed pressure plate 18 and the push rod 20 to press down, so that the fixed pressure plate 18 is pressed against the installation The spring 23 is installed for extrusion, so that the extrusion block 12 pushes the rod 20 to push the sliding pressure plate 21 to extrude the connecting spring 22, so as to perform force buffering. At the same time, the fixed ring blocks 9 arranged on both sides of the long connecting rod 5 and the two washers 10 mounted on the connecting rod journal 14 are used in cooperation with the multiple small springs 13 fixedly installed in the left balancing block 4 and the right balancing block 6 and the extrusion block 12 for buffering. At the same time, the fixed ring blocks 9 and washers 10 fixedly installed on both sides of the long connecting rod 5 are rotatably installed in the limiting rings 11 integrally formed on the left balancing block 4 and the right balancing block 6 to prevent displacement.

[0028] The above is a detailed introduction to an engine crankshaft with a buffer structure provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An engine crankshaft with a buffer structure, characterized in that: include: A base (1), wherein a plurality of sliding blocks (15) are slidably mounted on the base (1), a movable plate (24) is fixedly mounted on the bottom end of the sliding block (15), a second plug rod (16) and a first plug rod (17) are fixedly mounted on the bottom end of the movable plate (24), a fixed pressure plate (18) is fixedly mounted on the bottom end of the second plug rod (16), a mounting spring (23) is fixedly mounted on the bottom end of the fixed pressure plate (18), a push rod (20) is fixedly mounted on the bottom end of the first plug rod (17), the bottom end of the push rod (20) slides against the sliding pressure plate (21), a connecting spring (22) is fixedly mounted on one side of the sliding pressure plate (21), two supporting springs (19) are fixedly mounted on the bottom end of the movable plate (24), a cushion block (7) is fixedly mounted on the top end of the sliding block (15), two supporting plates (3) are fixedly mounted on the top end of the base (1), and a crankshaft assembly is arranged between the two supporting plates (3).

2. The engine crankshaft with a buffer structure according to claim 1, characterized in that: The crankshaft assembly comprises a plurality of left balancing blocks (4) and a plurality of right balancing blocks (6), wherein the bottom of the left balancing block (4) and the top of the right balancing block (6) are both fixedly mounted with column journals (8), wherein two of the column journals (8) are rotatably mounted in the corresponding support plates (3), a connecting rod journal (14) is fixedly mounted between the left balancing block (4) and the right balancing block (6), a long connecting rod (5) is rotatably mounted on the connecting rod journal (14), washers (10) are fixedly mounted on both sides of the long connecting rod (5), two washers (10) are sleeved on the connecting rod journal (14), and the two washers (10) are respectively movably abutted against two fixed ring blocks (9).

3. The engine crankshaft with a buffer structure according to claim 2, characterized in that: A plurality of small springs (13) are fixedly installed in the left balancing block (4) and the right balancing block (6); an extrusion block (12) is fixedly installed on one side of the small spring (13); the extrusion block (12) is movably abutted against one side of the gasket (10); a limiting ring (11) is integrally formed on one side adjacent to the left balancing block (4) and the right balancing block (6); and the fixed ring block (9) and the gasket (10) are rotatably installed in the limiting ring (11).

4. The engine crankshaft with a buffer structure according to claim 3, characterized in that: The left balancing block (4) and the right balancing block (6) are both provided with mounting circular grooves, the small spring (13) is fixedly mounted in the mounting circular grooves, and the extrusion block (12) is slidably mounted in the mounting circular grooves.

5. The engine crankshaft with a buffer structure according to claim 1, characterized in that: The base (1) is provided with a sliding groove matching the movable plate (24), the movable plate (24) is slidably mounted in the sliding groove, and the two support springs (19) are respectively sleeved on the outside of the second insertion rod (16) and the first insertion rod (17).

6. The engine crankshaft with a buffer structure according to claim 1, characterized in that: The base (1) is provided with a movable groove matching the fixed pressing plate (18), and the base (1) is provided with a plug-in groove matching the sliding block (15).

7. The engine crankshaft with a buffer structure according to claim 2, characterized in that: A limiting sliding groove matching the cushion block (7) is provided at the top of the base (1), and a flywheel end (2) is fixedly mounted on one side of one of the column journals (8).

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