High-strength diesel engine crankshaft
By introducing I-shaped reinforcement plates, reinforcement layers and anti-corrosion coatings into the diesel engine crankshaft, the problem of easy breakage of the crankshaft is solved, the strength and corrosion resistance of the crankshaft are improved, and its durability is ensured.
Patent Information
- Application Number
- CN202422530384.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing diesel engine crankshaft is easy to break during rotation and has weak bearing capacity, low overall strength and is easily damaged.
The strength of the diesel engine crankshaft is enhanced by using structures such as I-shaped reinforcement plates, first and second reinforcement layers, and protective layers. The reinforcement plates are fixed with bolts, reinforcement layers are set inside the main journal and output shaft, and an anti-corrosion coating is sprayed on the outer wall.
It improves the connection strength and corrosion resistance of the diesel engine crankshaft, enhances the durability of the overall structure, and prevents breakage and damage.
Smart Images
Figure CN223306132U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of diesel engine crankshafts, in particular to a high-strength diesel engine crankshaft. Background Art
[0002] The crankshaft is the primary rotating component of an engine. When attached to the connecting rod, it converts the connecting rod's up-and-down (reciprocating) motion into a circular (rotating) motion. The crankshaft is a crucial component in the engine, and the strength of its crankpin and main journal is crucial.
[0003] In the process of implementing this application, the applicant found that the existing diesel engine crankshaft is prone to breakage during rotation, and its bearing capacity is weak. The overall strength of the crankshaft is not high and it is easily damaged, which brings troubles to users and cannot meet the usage needs of most users. Utility Model Content
[0004] The purpose of the utility model is to solve the problems in the prior art that the bearing capacity of the diesel engine crankshaft is weak and the overall strength of the crankshaft is not high and it is easy to be damaged, and to propose a high-strength diesel engine crankshaft.
[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:
[0006] A high-strength diesel engine crankshaft comprises a crankpin and two annular plates, wherein two crank arms are fixedly provided on the side walls of the crankpin, and a main journal and an output shaft are fixedly provided on the side walls of the two crank arms, and the two annular plates are rotatably sleeved on the outer walls of the main journal and the output shaft respectively through bearings, and a plurality of I-shaped reinforcement plates are fixedly provided on the side walls of the two crank arms, and a plurality of bolts are movably sleeved on the interior of each of the annular plates, and one end of each of the bolts is threadedly sleeved on the interior of the corresponding I-shaped reinforcement plate, and a first mounting cavity and a second mounting cavity are provided on the interior of the main journal and the output shaft, and a first reinforcement layer and a second reinforcement layer are fixedly provided on the inner walls of each first mounting cavity and each second mounting cavity.
[0007] Preferably, a third installation cavity is provided inside the main journal and the output shaft, a protective layer is fixedly provided inside each of the third installation cavities, and each of the protective layers is a tungsten carbide layer.
[0008] Preferably, the outer walls of the main journal and the output shaft are sprayed with an anti-corrosion coating.
[0009] Preferably, each of the first reinforcement layer and the second reinforcement layer is a carbon layer.
[0010] Preferably, the crank pin is a high-speed steel pin, and the two crank arms are both high-speed steel arms.
[0011] Preferably, each of the anti-corrosion coatings is an epoxy resin coating.
[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0013] 1. The utility model fixes multiple I-shaped reinforcement plates between two crankshaft arms and two annular plates by bolts through the provision of I-shaped reinforcement plates, a first reinforcement layer and a second reinforcement layer, thereby improving the connection strength between the main journal and the output shaft, and the first reinforcement layer and the second reinforcement layer are fixedly provided inside the main journal and the output shaft, thereby enabling the main journal and the output shaft to be reinforced for a second time, thereby ensuring that the diesel engine crankshaft has a higher strength.
[0014] 2. In the present invention, a third mounting cavity is provided inside the main journal and the output shaft through the provision of a protective layer. A protective layer is fixedly provided inside each third mounting cavity, and the material of each protective layer is tungsten carbide, which is a material with extremely high hardness, thereby further improving the strength of the diesel engine crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0016] Figure 1 This is the main view of the utility model;
[0017] Figure 2 For the utility model Figure 1 Schematic diagram of the cross-sectional structure;
[0018] Figure 3 For the utility model Figure 1 A three-dimensional view of an I-shaped reinforcement plate.
[0019] Description of reference numerals:
[0020] 1. Crankpin; 2. Annular plate; 3. Crank arm; 4. Main journal; 5. Output shaft; 6. I-shaped reinforcement plate; 7. Bolt; 8. First reinforcement layer; 9. Second reinforcement layer; 10. Protective layer; 11. Anti-corrosion coating. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0022] The embodiment of the utility model discloses a high-strength diesel engine crankshaft.
[0023] The utility model provides Figure 1-Figure 3 A high-strength diesel engine crankshaft shown in FIG. 1 includes a crankpin 1 and two annular plates 2. Two crank arms 3 are fixedly provided on the side wall of the crankpin 1. A main journal 4 and an output shaft 5 are fixedly provided on the side walls of the two crank arms 3. The two annular plates 2 are rotatably sleeved on the outer walls of the main journal 4 and the output shaft 5 respectively through bearings. A plurality of I-shaped reinforcement plates 6 are fixedly provided on the side walls of the two crank arms 3. A plurality of bolts 7 are movably sleeved on the interior of each annular plate 2. One end of each bolt 7 is threadedly sleeved on the interior of the corresponding I-shaped reinforcement plate 6. The main journal 4 and the output shaft 5 are rotatably sleeved on the outer walls of the two crank arms 3. The interior of the output shaft 5 is provided with a first installation cavity and a second installation cavity, and the inner walls of each first installation cavity and each second installation cavity are fixedly provided with a first reinforcement layer 8 and a second reinforcement layer 9. By utilizing the provided I-shaped reinforcement plate 6, the first reinforcement layer 8 and the second reinforcement layer 9, the connection strength between the main journal 4 and the output shaft 5 can be improved, and the interior of the main journal 4 and the output shaft 5 are fixedly provided with a first reinforcement layer 8 and a second reinforcement layer 9, so that the main journal 4 and the output shaft 5 can be reinforced for a second time, thereby ensuring that the diesel engine crankshaft has a higher strength.
[0024] In order to further improve the strength of the diesel engine crankshaft, such as Figure 1-Figure 2 As shown, a third mounting cavity is provided inside the main journal 4 and the output shaft 5, and a protective layer 10 is fixedly provided inside each third mounting cavity. Each protective layer 10 is a tungsten carbide layer. By utilizing the provided protective layer 10, the strength of the diesel engine crankshaft can be further improved.
[0025] In order to improve the corrosion resistance of the main journal 4 and the output shaft 5, Figure 1-Figure 2 As shown, the outer walls of the main journal 4 and the output shaft 5 are sprayed with an anti-corrosion coating 11 . The anti-corrosion coating 11 can improve the corrosion resistance of the main journal 4 and the output shaft 5 .
[0026] In order to ensure that the first reinforcement layer 8 and the second reinforcement layer 9 have better reinforcement capabilities, Figure 2 As shown, each of the first reinforcement layer 8 and the second reinforcement layer 9 is a carbon layer, thereby ensuring that the first reinforcement layer 8 and the second reinforcement layer 9 have good reinforcement capabilities.
[0027] In order to improve the hardness of the crank pin 1 and the crank arm 3, Figure 1-Figure 2 As shown, the crankpin 1 is a high-speed steel pin, and the two crank arms 3 are both high-speed steel arms, which can improve the hardness of the crankpin 1 and the crank arms 3.
[0028] Finally, in order to ensure that the anti-corrosion coating has a high anti-corrosion ability, such as Figure 1 As shown, each anti-corrosion coating 11 is an epoxy resin coating, which is set to enable.
[0029] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A high-strength diesel engine crankshaft, comprising a crankpin (1) and two annular plates (2), characterized in that: Two crank arms (3) are fixedly provided on the side wall of the crank pin (1), and a main journal (4) and an output shaft (5) are fixedly provided on the side walls of the two crank arms (3), and the two annular plates (2) are rotatably sleeved on the outer walls of the main journal (4) and the output shaft (5) respectively through bearings. A plurality of I-shaped reinforcement plates (6) are fixedly provided on the side walls of the two crank arms (3), and a plurality of bolts (7) are movably sleeved inside each annular plate (2), and one end of each bolt (7) is threadedly sleeved inside the corresponding I-shaped reinforcement plate (6). A first mounting cavity and a second mounting cavity are provided inside the main journal (4) and the output shaft (5), and a first reinforcement layer (8) and a second reinforcement layer (9) are fixedly provided on the inner walls of each first mounting cavity and each second mounting cavity.
2. A high-strength diesel engine crankshaft according to claim 1, characterized in that: A third installation cavity is provided inside the main journal (4) and the output shaft (5), a protective layer (10) is fixedly provided inside each of the third installation cavities, and each of the protective layers (10) is a tungsten carbide layer.
3. A high-strength diesel engine crankshaft according to claim 1, characterized in that: The outer walls of the main journal (4) and the output shaft (5) are sprayed with an anti-corrosion coating (11).
4. A high-strength diesel engine crankshaft according to claim 1, characterized in that: Each of the first reinforcement layer (8) and the second reinforcement layer (9) is a carbon layer.
5. The high-strength diesel engine crankshaft according to claim 1, characterized in that: The crank pin (1) is a high-speed steel pin, and the two crank arms (3) are both high-speed steel arms.
6. A high-strength diesel engine crankshaft according to claim 3, characterized in that: Each of the anti-corrosion coatings (11) is an epoxy resin coating.