Low noise flywheel housing structure

Abstract

The utility model provides a kind of low-noise flywheel shell structure, including flywheel shell shell body, flywheel shell shell body center is equipped with main shaft hole, the edge of flywheel shell shell body two sides is uniformly provided with multiple edge mounting holes, the end face in flywheel shell shell body is provided with multiple end face stiffeners that are circumferentially distributed, the sidewall in flywheel shell shell body is provided with multiple sidewall stiffeners that are connected with end face stiffener one-to-one, every two end face stiffeners are provided with end face sound insulation cotton, every two sidewall stiffeners are provided with sidewall sound insulation cotton, all end face stiffeners are connected with the end face mesh plate that covers every end face stiffener, end face mesh plate is connected with sidewall mesh cylinder to one side, sidewall mesh cylinder is connected with every sidewall stiffener and covers every sidewall sound insulation cotton.The utility model can effectively suppress the noise generated in the process of flywheel running, avoid the influence of noise on the NVH performance of whole vehicle.

Description

Technical Field

[0001] This utility model belongs to the technical field of engine parts and relates to a low-noise flywheel housing structure. Background Technology

[0002] As the core power source for various mechanical equipment and vehicles, the engine is widely used in automobiles, ships, construction machinery, and power generation equipment. In the engine structure, the flywheel is a crucial rotating component connecting the crankshaft. Its main functions are to store kinetic energy, balance speed fluctuations, and assist in the smooth starting and operation of the engine. To secure and support the flywheel and ensure its safe operation, a dedicated housing structure—the flywheel housing—is typically installed at the rear of the engine.

[0003] The flywheel housing not only supports the flywheel bearings and protects the flywheel from external environmental influences, but it is also a key structural component connecting the engine and the transmission system (such as the gearbox). Therefore, the design of the flywheel housing must consider multiple performance requirements, including mechanical strength, installation precision, and sealing. Currently, most common flywheel housings are made of cast iron or aluminum alloy, providing a certain degree of structural rigidity and protection.

[0004] However, in actual use, the flywheel inevitably generates vibration and noise when rotating at high speed. These noises mainly originate from the flywheel's own dynamic imbalance, gear meshing impact, and air disturbance during rotation. Although existing flywheel housings provide basic physical isolation and protection for the flywheel in terms of structure, they still have significant shortcomings in acoustic control, making it difficult to effectively suppress and isolate the transmission of noise caused by the flywheel's rotation. Utility Model Content

[0005] The purpose of this invention is to provide a low-noise flywheel housing structure that can effectively suppress the noise generated during flywheel operation.

[0006] To solve the above-mentioned technical problems, this utility model provides a low-noise flywheel housing structure, including a flywheel housing shell. A main shaft hole is opened at the center of the flywheel housing shell. Multiple edge mounting holes are provided on both sides of the flywheel housing shell. Multiple circumferentially distributed end-face stiffening strips are provided on the inner end face of the flywheel housing shell. Multiple sidewall stiffening strips, corresponding one-to-one with the end-face stiffening strips, are provided on the inner sidewall of the flywheel housing shell. End-face sound insulation cotton is provided between every two end-face stiffening strips, and sidewall sound insulation cotton is provided between every two sidewall stiffening strips. All end-face stiffening strips are fitted with an end-face mesh plate that covers each end-face stiffening strip. A sidewall mesh cylinder is connected to one side of the end-face mesh plate, and the sidewall mesh cylinder is connected to each sidewall stiffening strip and covers each sidewall sound insulation cotton.

[0007] The present invention is further configured such that each side wall stiffening strip includes an arc-shaped sound insulation cotton in contact with the flywheel housing, and multiple strip-shaped sound insulation strips distributed along the arc-shaped sound insulation cotton. The cross-section of the end of each strip-shaped sound insulation strip away from the corresponding arc-shaped sound insulation cotton is a pointed tip, and each pair of adjacent strip-shaped sound insulation strips are in close contact.

[0008] The present invention is further provided that the side wall of the flywheel housing has multiple heat dissipation holes.

[0009] The present invention is further configured such that the sound insulation cotton on the side wall at the corresponding heat dissipation vents is partially composed of dust filter sponges that allow air to circulate.

[0010] The present invention is further configured such that each end face stiffening bar is provided with an end face threaded hole, and the end face mesh plate is provided with a plurality of end face connecting holes corresponding one-to-one with the end face threaded holes.

[0011] The present invention is further configured such that each side wall stiffening strip is provided with a side wall threaded hole, and the side wall mesh cylinder is provided with a plurality of side wall connecting holes corresponding one-to-one with the side wall threaded holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Firstly, when the flywheel rotates, the combination of the end face sound insulation cotton and the side wall sound insulation cotton can effectively absorb the noise generated by the flywheel rotation. At the same time, the mesh structure of the end face mesh plate and the side wall mesh cylinder can also effectively absorb the generated noise, thus effectively suppressing the noise generated during the flywheel operation.

[0014] Secondly, the residue generated by the wear of the flywheel during long-term operation can fall through the mesh cylinder of the side wall into the strips of the sound insulation cotton on the side wall, effectively fixing the residue and preventing it from re-entering the flywheel housing and interfering with the normal rotation of the flywheel.

[0015] Thirdly, when the flywheel rotates at high speed, it can drive the internal airflow. Through the design of the heat dissipation vents, the airflow enters and exits through the heat dissipation vents, taking away the heat generated inside, thus improving the heat dissipation effect. In addition, the dust filter sponge can effectively prevent external dust from entering the flywheel housing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded view of this utility model;

[0018] Figure 3 Used to display the end face stiffeners and side wall stiffeners inside the flywheel housing.

[0019] The components include: 1. Flywheel housing; 2. Spindle hole; 3. Edge mounting hole; 4. End face stiffening strip; 5. Side wall stiffening strip; 6. End face sound insulation cotton; 7. Arc-shaped sound insulation cotton; 8. Strip sound insulation strip; 9. End face perforated plate; 10. End face threaded hole; 11. End face connecting hole; 12. Side wall perforated cylinder; 13. Side wall threaded hole; 14. Side wall connecting hole; 15. Heat dissipation vent; and 16. Dust filter sponge. Detailed Implementation

[0020] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the low-noise flywheel housing structure proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0021] Example, refer to Figure 1-3 A low-noise flywheel housing structure includes a flywheel housing 1, a main shaft hole 2 at the center of the flywheel housing 1, multiple edge mounting holes 3 on both sides of the flywheel housing 1, seven circumferentially distributed end face stiffeners 4 on the inner end face of the flywheel housing 1, and seven side wall stiffeners 5 on the inner side wall of the flywheel housing 1 that are connected one-to-one with the end face stiffeners 4. A piece of end face sound insulation cotton 6 is provided between every two end face stiffeners 4, and a piece of side wall sound insulation cotton is provided between every two side wall stiffeners 5. Through the cooperation of the end face sound insulation cotton 6 and the side wall sound insulation cotton, the noise generated by the rotation of the flywheel can be effectively absorbed. Each sidewall stiffening strip 5 includes an arc-shaped sound insulation cotton 7 that contacts the flywheel housing 1, and multiple strip-shaped sound insulation strips 8 distributed along the arc direction of the arc-shaped sound insulation cotton 7. The cross-section of the end of each strip-shaped sound insulation strip 8 away from the corresponding arc-shaped sound insulation cotton 7 is a pointed tip. Each pair of adjacent strip-shaped sound insulation strips 8 are in close contact, so that the residue generated inside the flywheel housing can enter between the two strip-shaped sound insulation strips 8 and be effectively fixed.

[0022] All end face stiffeners 4 are fitted with an end face mesh plate 9 that covers each end face stiffener 4. Each end face stiffener 4 has an end face threaded hole 10. The end face mesh plate 9 has seven end face connecting holes 11 that correspond one-to-one with the end face threaded holes 10. The end face mesh plate 9 can be connected to the end face stiffener 4 with bolts. A side wall mesh cylinder 12 is connected to one side of the end face mesh plate 9. The side wall mesh cylinder 12 is connected to each side wall stiffener 5 and covers each side wall sound insulation cotton. Each side wall stiffener 5 has a side wall threaded hole 13. The side wall mesh cylinder 12 has seven side wall connecting holes 14 that correspond one-to-one with the side wall threaded holes 13. The side wall mesh cylinder 12 can be connected to the side wall stiffener 5 with bolts. The flywheel housing 1 has two opposing heat dissipation vents 15 on its side wall. The sound insulation cotton on the side wall at the corresponding heat dissipation vents 15 is partly dust filter sponge 16 that allows air to flow. When the flywheel rotates, it can drive airflow in and out of the heat dissipation vents 15, carrying away the heat generated inside and improving the heat dissipation effect.

[0023] Working principle: When the flywheel rotates, the cooperation between the end face sound insulation cotton 6 and the side wall sound insulation cotton can effectively absorb the noise generated by the flywheel rotation. At the same time, the mesh structure of the end face mesh plate 9 and the side wall mesh cylinder 12 can also effectively absorb the generated noise, ultimately effectively suppressing the noise generated during the flywheel operation. The residue generated by the wear of the flywheel during long-term operation can fall through the side wall mesh cylinder 12 into the strip sound insulation strips 8 of the side wall sound insulation cotton, effectively fixing the residue and preventing the residue from re-entering the flywheel housing 1 and interfering with the normal rotation of the flywheel. At the same time, when the flywheel rotates at high speed, it can drive the internal airflow. Through the design of the heat dissipation vents 15, the airflow enters and exits through the heat dissipation vents 15, carrying away the heat generated inside, thus improving the heat dissipation effect. In addition, the dust filter sponge 16 can effectively prevent external dust from entering the flywheel housing 1.

[0024] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0025] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A low-noise flywheel housing structure comprising a flywheel housing shell (1) having a main shaft hole (2) formed in the center thereof, and a plurality of edge mounting holes (3) formed in the edges of both sides of the flywheel housing shell (1), characterized in that, The flywheel housing (1) has multiple end face stiffening strips (4) arranged in a circular pattern on its end face. The flywheel housing (1) has multiple side wall stiffening strips (5) that are connected one-to-one with the end face stiffening strips (4). There is end face sound insulation cotton (6) between each pair of end face stiffening strips (4) and side wall sound insulation cotton between each pair of side wall stiffening strips (5). All end face stiffening strips (4) are connected to an end face mesh plate (9) that covers each end face stiffening strip (4). The end face mesh plate (9) is connected to a side wall mesh cylinder (12) on one side. The side wall mesh cylinder (12) is connected to each side wall stiffening strip (5) and covers each side wall sound insulation cotton.

2. A low noise flywheel housing structure according to claim 1, wherein Each side wall stiffening strip (5) includes an arc-shaped sound insulation cotton (7) that contacts the flywheel housing (1) and multiple strip-shaped sound insulation strips (8) distributed along the arc-shaped sound insulation cotton (7). The cross-section of the end of each strip-shaped sound insulation strip (8) away from the corresponding arc-shaped sound insulation cotton (7) is a pointed tip, and there is close contact between every two adjacent strip-shaped sound insulation strips (8).

3. The low noise flywheel housing structure of claim 1, wherein The flywheel housing (1) has multiple heat dissipation holes (15) on its side wall.

4. The low-noise flywheel housing structure according to claim 3, characterized in that, The side wall sound insulation cotton at the corresponding heat dissipation vent (15) is partially a dust filter sponge (16) that allows air to flow.

5. The low-noise flywheel housing structure according to claim 1, characterized in that, Each end face stiffening bar (4) is provided with an end face threaded hole (10), and the end face mesh plate (9) is provided with a plurality of end face connecting holes (11) corresponding one-to-one with the end face threaded hole (10).

6. The low-noise flywheel housing structure according to claim 1, characterized in that, Each side wall stiffening strip (5) is provided with a side wall threaded hole (13), and the side wall mesh cylinder (12) is provided with a plurality of side wall connecting holes (14) corresponding one-to-one with the side wall threaded hole (13).

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