An engine flywheel cover
The integrated design of the quarter-hollow annular casing solves the problem of difficult assembly and maintenance of existing flywheel casings, provides a convenient assembly platform and a safe maintenance environment, reduces hoisting risks, and improves work efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENGLI ENGINE (DALIAN) CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-05-26
Smart Images

Figure CN224283993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology, and in particular to an engine flywheel cover. Background Technology
[0002] As a core component of the power transmission system, the safety protection of the marine engine flywheel is of paramount importance. The main function of the flywheel casing is to provide protection during flywheel operation, preventing external objects from intruding and interfering with its operation, while also preventing the flywheel's moving parts from damaging the outside environment, thus ensuring the stable and reliable operation of the power system.
[0003] Currently, most flywheel covers in the marine industry employ a structural design where two semi-circular rings are joined together to form a single semi-circular ring. While this type of cover can meet protection requirements to a certain extent, it has many shortcomings in practical applications. During assembly and maintenance, the complex structure of the diesel engine output end makes fitting the cover to it quite difficult. Furthermore, the flywheel and cover themselves occupy a large space, making operation extremely inconvenient for workers, requiring a significant amount of time and effort to adjust the installation position and disassemble parts, thus greatly reducing work efficiency.
[0004] Existing engine cover designs are mostly enclosed structures, essentially forming a complete ring. They cannot provide additional flat surfaces for placing tools or serving as assembly support platforms. Furthermore, the structures are often modular, consisting of two semi-circular halves that require precise alignment and fixation during assembly, which is time-consuming and labor-intensive. In addition, the front of the cover typically lacks handles for easy climbing, posing safety hazards for workers climbing when performing installation, inspection, or maintenance work at higher levels on the ship's engine cover. The lack of necessary gripping support can easily lead to operational difficulties or even accidents. Utility Model Content
[0005] This utility model provides an engine flywheel cover that solves the problem that existing flywheel covers do not have an assembly platform.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] An engine flywheel cover includes a cover body, which is a quarter-hollow annular body; the cover body includes a vertically arranged longitudinal base plate and a horizontally arranged transverse base plate, the longitudinal base plate is a half-circular ring, the annular notch of the longitudinal base plate faces downward, the right edge of the transverse base plate is connected to the outer edge of the longitudinal base plate, and the cover body is an integral structure.
[0008] The outer surface of the cover body is provided with reinforcing ribs that divide the cover body into n equal parts, and a handle is provided on the outer surface of the longitudinal substrate.
[0009] The transverse substrate includes a top flat plate and curved plates on the front and rear sides of the flat plate.
[0010] Furthermore, the tablet is equipped with an inspection window.
[0011] Furthermore, the side of the transverse substrate away from the longitudinal substrate is connected to a reinforcing substrate, which has a strip-shaped arc structure.
[0012] Furthermore, n is an odd number, and the reinforcing rib divides the longitudinal substrate into n sub-sub ...
[0013] Furthermore, n is 5.
[0014] Furthermore, the front part of the transverse substrate is provided with a turning machine notch, and the rear part of the transverse substrate is provided with a speed sensor notch.
[0015] Furthermore, a base is provided at the lower part of the cover body, and the base is a connecting flange.
[0016] Furthermore, an arc-shaped plate is provided at the inner arc of the longitudinal substrate, and the arc-shaped plate is a strip-shaped arc structure.
[0017] Furthermore, lifting holes are provided on the reinforcing ribs on both sides of the plate.
[0018] The beneficial effects of this utility model are as follows:
[0019] This patent solves the technical problems of existing flywheel covers, such as large space occupation, high assembly and maintenance difficulty, redundant structural design, and high hoisting risk, by optimizing the cover structure, adopting an integrated quarter-hollow annular cover body, and setting handles on the outer surface of its longitudinal base plate and external reinforcing ribs.
[0020] The flat plate portion on the cover of this patent can be used as an auxiliary platform during maintenance and repair of the ship's engine output end, providing convenient working support for the staff, enhancing the functionality of the cover, and making it not only a protective device, but also an auxiliary tool in the maintenance and repair process.
[0021] The patented design places the hoisting holes directly above the center of gravity of the enclosure. This ingenious layout greatly reduces swaying and offset during hoisting, lowers the risk of hoisting operations, ensures the personal safety of workers and the integrity of the equipment, and improves the stability and reliability of the installation process.
[0022] This patented design employs an integrated structure, resulting in a stronger overall integrity of the casing and a more uniform stress distribution. This effectively resists various forces generated during flywheel operation, enhancing the casing's load-bearing capacity and resistance to deformation. It ensures that the casing maintains a stable and reliable working state even under complex marine engine operating conditions, providing robust and effective protection for the engine flywheel. Attached Figure Description
[0023] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a front view of the present invention.
[0025] Figure 2 This is a rear view of the present invention.
[0026] Explanation of icon numbers:
[0027] 1. Longitudinal base plate; 2. Transverse base plate; 3. Reinforcing rib; 4. Handle; 5. Flat plate; 6. Bending plate; 7. Inspection window; 8. Reinforcing base plate; 9. Turning gear notch; 10. Speed sensor notch; 11. Base; 12. Arc plate; 13. Lifting hole. Detailed Implementation
[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0032] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0033] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0034] This utility model provides a technical solution: an engine flywheel cover, such as... Figure 1 and Figure 2 As shown, the device includes a housing body, which is a quarter-hollow annular body. The housing body comprises a vertically arranged longitudinal base plate 1 and a horizontally arranged transverse base plate 2. The longitudinal base plate 1 is a half-circular ring with its annular notch facing downwards. The right edge of the transverse base plate 2 connects to the outer edge of the longitudinal base plate 1. The housing body is a one-piece structure. The side of the transverse base plate 2 away from the longitudinal base plate 1 is connected to a reinforcing base plate 8, which is a strip-shaped arc structure. A turning gear notch 9 is provided at the front of the transverse base plate 2, and a speed sensor notch 10 is provided at the rear of the transverse base plate 2. A base 11, which is a connecting flange, is provided at the lower part of the housing body. An arc-shaped plate 12, which is a strip-shaped arc structure, is provided at the inner arc of the longitudinal base plate 1.
[0035] The outer surface of the cover body is provided with reinforcing ribs 3 that divide the cover body into n equal parts, and a handle 4 is provided on the outer surface of the longitudinal base plate 1; the handle 4 can be used as a handle and a foot pedal at the same time.
[0036] The horizontal substrate 2 includes a top plate 5 and curved plates 6 on the front and rear sides of the plate 5. The plate 5 has an inspection window 7.
[0037] n is an odd number, preferably n is 5. The reinforcing rib 3 divides the longitudinal substrate 1 into n sub-sub ...
[0038] The flat plate 5 of this utility model has a certain load-bearing capacity. Under a load of 500kg, its maximum deformation is less than 4mm.
[0039] During the installation of this utility model, workers first use the lifting holes located directly above the center of gravity of the casing to smoothly lift and move it to the designated installation position on the flywheel. Due to the rational design of the lifting holes, the casing remains stable during lifting, reducing swaying and displacement, and lowering the risk of lifting accidents. Once the casing is in the appropriate position, it is tightly connected and fixed to the output end of the marine engine via the base (connecting flange) at its lower part. The connection points of the base and the engine output end are matched and firmly connected using bolts and other connectors, ensuring that the casing is stably fixed to the engine flywheel after installation, providing reliable protection for subsequent engine operation.
[0040] When maintenance and repairs are required on the output end of a ship's engine, workers can fully utilize the flat plate portion of the patented casing as an auxiliary platform. For example, workers can place tools on the flat plate for easy access and operation. Simultaneously, workers can use the handles located on the outer surface of the longitudinal base plate to climb and safely reach higher positions on the casing for work. The stability of the flat plate portion and the rational layout of the handles provide workers with a safe and convenient operating environment, improving the efficiency and safety of maintenance and repair work.
[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An engine flywheel cover, characterized in that: The cover body is a quarter-hollow ring. The cover body includes a vertically arranged longitudinal substrate (1) and a horizontally arranged transverse substrate (2). The longitudinal substrate (1) is a half-circular ring with the ring notch facing downward. The right edge of the transverse substrate (2) is connected to the outer edge of the longitudinal substrate (1). The cover body is an integral structure. The outer surface of the cover body is provided with reinforcing ribs (3) that divide the cover body into n equal parts, and a handle (4) is provided on the outer surface of the longitudinal base plate (1). The transverse substrate (2) includes a top plate (5) and curved plates (6) on the front and rear sides of the plate (5).
2. The engine flywheel cover according to claim 1, characterized in that: The plate (5) has an inspection window (7).
3. The engine flywheel cover according to claim 1, characterized in that: The side of the transverse substrate (2) away from the longitudinal substrate (1) is connected to the reinforcing substrate (8), which is a strip-shaped arc structure.
4. The engine flywheel cover according to claim 1, characterized in that: n is an odd number. The reinforcing rib (3) divides the longitudinal substrate (1) into n sub-sub ...
5. The engine flywheel cover according to claim 4, characterized in that: n is 5.
6. The engine flywheel cover according to claim 1, characterized in that: The front part of the transverse base plate (2) is provided with a turning machine notch (9), and the rear part of the transverse base plate (2) is provided with a speed sensor notch (10).
7. The engine flywheel cover according to claim 1, characterized in that: The lower part of the cover body is provided with a base (11), and the base (11) is a connecting flange.
8. The engine flywheel cover according to claim 1, characterized in that: An arc plate (12) is provided at the inner arc of the longitudinal substrate (1), and the arc plate (12) is a strip-shaped arc structure.
9. The engine flywheel cover according to claim 1, characterized in that: The reinforcing ribs (3) on both sides of the plate (5) are respectively provided with lifting holes (13).