CN112228509A

CN112228509A - Structure of lightweight flywheel

Info

Publication number: CN112228509A
Application number: CN202011048191.0A
Authority: CN
Inventors: 张寿权; 冯家岁
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Marine and Genset Power Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-01-15

Abstract

The application discloses structure of lightweight flywheel for reduce the empty ship displacement of ships and light boats, improved the loading capacity of ships and light boats simultaneously. The method comprises the following steps: the flywheel body is disc-shaped; the flywheel main body is provided with two end faces, namely a first end face and a second end face, the first end face is used for connecting a crankshaft, and the second end face is positioned on the back face of the first end face; the first end surface is provided with a gear ring mounting part along the radial direction of the outer ring; the middle part of the first end surface is provided with a crankshaft big end joint part; the second end surface is provided with the flywheel bolt mounting part at the same position as the joint part of the big end of the crankshaft of the first end surface; lightening holes are uniformly distributed on the periphery of the flywheel bolt mounting part along the circumference; and weight reducing grooves are uniformly distributed on the periphery of the weight reducing holes along the circumference.

Description

Structure of lightweight flywheel

Technical Field

The application relates to the field of engine accessories, in particular to a structure of a lightweight flywheel.

Background

The flywheel is the main part of engine power output, and has the functions of storing energy, stabilizing rotating speed, transmitting power and the like.

In the prior art, the larger the weight of an engine flywheel is, the larger the rotational inertia of the engine flywheel is, so that the idle speed stability is facilitated, and the damping effect is improved. The displacement of ships when the ships are fully loaded and the displacement's of when empty difference is the effective payload of ship, and the empty ship state of ships includes hull and driving system, therefore the big flywheel of weight can lead to the gross weight increase of ships engine when applying to the ships engine, and the empty ship displacement of ships increases, has reduced the loading capacity of ships simultaneously.

Disclosure of Invention

The application provides a structure of lightweight flywheel for reduce the total weight of ship engine, thereby reduce the empty ship displacement of ship, improve the loading capacity of ship simultaneously.

The application provides a structure of lightweight flywheel includes:

the flywheel body is disc-shaped;

the flywheel main body is provided with two end faces, namely a first end face and a second end face, the first end face is used for connecting a crankshaft, and the second end face is positioned on the back face of the first end face;

the first end surface is provided with a gear ring mounting part along the radial direction of the outer ring;

the middle part of the first end surface is provided with a crankshaft big end joint part;

the second end surface is provided with the flywheel bolt mounting part at the same position as the joint part of the big end of the crankshaft of the first end surface;

lightening holes are uniformly distributed on the periphery of the flywheel bolt mounting part along the circumference;

and weight reducing grooves are uniformly distributed on the periphery of the weight reducing holes along the circumference.

Optionally, the structure further includes:

and the second end surface is provided with a connecting disc mounting part and a threaded hole.

Optionally, the structure further includes:

the threaded holes are circumferentially arranged around the weight-reducing grooves.

Optionally, the land mounting portion is arranged according to SAE society of automotive engineers standards.

Optionally, the structure further includes:

and a flywheel positioning pin mounting hole is formed in the joint part of the big end of the crankshaft.

Optionally, the outer surface of the flywheel body is coated with an anti-rust coating.

Optionally, the lightening holes are formed by casting.

Optionally, the weight-reducing grooves are formed by casting.

Optionally, the number of the lightening holes is 6.

Optionally, the number of the weight-reducing grooves is 8.

According to the technical scheme, the weight reducing holes are uniformly distributed in the periphery of the flywheel bolt mounting portion along the circumference, and the weight reducing grooves are uniformly distributed in the periphery of the weight reducing holes along the circumference. The invention uses a large number of lightening holes and lightening grooves, effectively reduces the mass of the flywheel, so that the total weight of the boat engine can be effectively reduced when the flywheel is applied to the boat engine, thereby reducing the empty ship displacement of the boat and simultaneously improving the loading capacity of the boat.

Drawings

Fig. 1 is a schematic overall structure diagram of a structure of a lightweight flywheel provided in an embodiment of the present application;

fig. 2 is a cross-sectional view of a structure of a lightweight flywheel according to an embodiment of the present application;

fig. 3 is a schematic overall structure diagram of a structure of a lightweight flywheel according to an embodiment of the present application;

fig. 4 is a schematic overall structure diagram of a structure of a lightweight flywheel according to an embodiment of the present application.

Detailed Description

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings, are intended to be included within the scope of the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the claims, but rather by the claims, and all changes in the structures, the proportions, and the sizes, which are included in the disclosure, are intended to be encompassed within the scope of the present disclosure, without affecting the efficacy and attainment of the same.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the application provides a structure of lightweight flywheel for reduce the total weight of ships and light boats engine, thereby reduce the empty ship displacement of ships and light boats, improve the loading capacity of ships and light boats simultaneously. The positional relationship of the components described in the following embodiments is based on fig. 3, in which fig. 3, the side without the weight-reducing grooves is the first end face, and the side with the weight-reducing grooves is the second end face.

Referring to fig. 1 to 4, the present application provides a structure of a lightweight flywheel, including:

the flywheel comprises a flywheel main body 1 which is disc-shaped;

the flywheel main body is provided with two end faces, namely a first end face 2 and a second end face 3, the first end face 2 is used for connecting a crankshaft, and the second end face 3 is positioned on the back face of the first end face 2;

the first end face 2 is provided with a gear ring mounting part 4 along the radial direction of the outer ring;

the middle part of the first end surface 2 is provided with a crankshaft big end joint part 5;

the flywheel bolt mounting part 6 is arranged on the second end surface 3 at the same position as the crankshaft big end joint part 5 of the first end surface 2;

lightening holes 7 are uniformly distributed on the periphery of the flywheel bolt mounting part 6 along the circumference;

and weight reducing grooves 8 are uniformly distributed on the periphery of the weight reducing holes 7 along the circumference.

The embodiment of the application provides a structure of lightweight flywheel, uses lightening hole 7 and subtracts heavy recess 8 in this flywheel main part 1 a large number, the effectual quality that reduces flywheel main part 1 to make the total weight that can effectively reduce the ship engine when the flywheel application is on the ship engine, thereby reduce the empty ship displacement of ship, improved the loading capacity of ship simultaneously.

In the embodiment of the application, the first end surface 2 of the flywheel main body 1 is connected with a crankshaft in an engine, and the second end surface 3 is used for fastening the connection of the flywheel main body 1 and the engine. In practice, the ring gear mounting portion 4 mounts a ring gear so that the flywheel main body 1 can mesh with a drive gear of an engine.

The above positional relationship is specifically: in the first end face 2, a gear ring mounting portion 4 and a crankshaft large-end joint portion 5 are in the same circle center, the gear ring mounting portion 4 is an outer circle, and the crankshaft large-end joint portion 5 is an inner circle. In the second end face 3, a flywheel bolt mounting portion 6, a lightening hole 7 and a lightening groove 8 are in the same circle center, wherein the flywheel bolt mounting portion 6 and a crankshaft large-head joint portion 5 are in opposite positions, the outer ring of the flywheel bolt mounting portion 6 is provided with the lightening hole 7, the outer ring of the lightening hole 7 is provided with the lightening groove 8, the lightening hole 7 penetrates through the flywheel, and the lightening groove 8 is arranged on the second end face 2.

The scheme provides an arrangement mode of main connecting parts on the flywheel main body 1, in practical situations, after the flywheel is connected with an engine through the crankshaft big-end joint part 5, the flywheel is connected with the engine through the flywheel bolt mounting part 6 by using bolts, so that the gear ring mounted on the gear ring mounting part 4 can be meshed with a driving gear of the engine, and the engine can work through the flywheel.

Optionally, the second end face 3 is provided with a connecting disc mounting portion 9 and a threaded hole 10, the connecting disc mounting portion 9, the threaded hole 10 and the weight reduction groove 8 are arranged on an excircle of the second end face 2, the connecting disc mounting portion 9 and the threaded hole 10 are used for being mounted and connected with a connecting disc, the relationship between the stable flywheel and the connecting disc mainly depends on a screw on the threaded hole 10, the weight reduction groove 8 is arranged in the connecting disc mounting portion 9 which does not affect the threaded hole 10, and the threaded hole 10 is circumferentially arranged around the weight reduction groove 8. The land mounting portion 9 is arranged in accordance with SAE society of automotive Engineers standards, and arranging the land mounting portion 9 using a fixed standard results in improved versatility of the flywheel, making the flywheel adaptable to all lands designed using SAE standards.

Be provided with flywheel locating pin mounting hole 11 in bent axle major part joint portion 5, this locating pin mounting hole 11 is in same position with the bolt mounting hole of flywheel bolt installation department 6, the setting is between two bolt mounting holes, and pierce through flywheel body 1, locating pin mounting hole 11 pierces through flywheel body 1 and can conveniently observe when the installation locating pin, counterpoint more easily, this flywheel locating pin mounting hole 11 is used for inserting the locating pin, stabilize the position of flywheel on the engine, prevent the flywheel displacement.

The outer surface of the flywheel body 1 is coated with the anti-rust coating which isolates the flywheel from air, slows down the oxidation rate of the flywheel by the air and prolongs the service life of the flywheel.

The lightening holes 7 and the lightening grooves 8 are formed in a casting mode, and the manufacturing cost for generating the lightening holes 7 and the lightening grooves 8 is reduced by using the casting mode.

Furthermore, the number of the lightening holes 7 on the flywheel is 6, the number of the lightening grooves 8 is 8, after all necessary connecting parts required for connecting with the outside on the flywheel are arranged, the lightening holes 7 and the lightening grooves 8 are designed in the area where the parts are not arranged, so that the normal use of the flywheel is not influenced, and in order to avoid influencing the gravity center of the flywheel, the positions of the lightening holes 7 and the lightening grooves 8 are required to be uniformly distributed on the flywheel along the circle center.

The flywheel is lightened by adding the lightening holes or lightening grooves to the flywheel. The weight of flywheel itself is big, carry out the total mass that the lightweight can directly make whole engine to the flywheel and reduce, so that can use under the special condition of the unable a large amount of bearing of part, if use on the ship, the mass of engine can directly influence the draft of ship, for the loading capacity of promotion ship, reduce the draft of ship when empty ship, then need carry out the lightweight to the engine, the lightweight flywheel of this application embodiment can reduce the total mass of engine this moment, in order to satisfy the demand of ship use scene.

It is intended that the foregoing description of the disclosed embodiments enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A structure of a lightweight flywheel, comprising:

the flywheel body is disc-shaped;

2. The structure of claim 1, further comprising:

3. The structure of claim 2, further comprising:

4. The structure of claim 2, wherein the land mounting portion is arranged in accordance with SAE society of automotive engineers standards.

5. The structure of any one of claims 1 to 4, further comprising:

6. The structure according to any one of claims 1 to 4, wherein the flywheel body outer surface is coated with a rust-preventive coating.

7. The structure according to any one of claims 1 to 4, wherein the lightening holes are formed by casting.

8. The structure according to any one of claims 1 to 4, wherein the weight-reduction grooves are formed by casting.

9. A structure according to any one of claims 1 to 4, characterized in that the number of lightening holes is 6.

10. The structure according to any one of claims 1 to 4, wherein the number of the weight-reducing grooves is 8.