Flywheel for air-cooled diesel engine

Abstract

The utility model provides a flywheel for an air-cooled diesel engine, which comprises a flywheel body, a radiating component, a fixing ring and scales, the center of the flywheel body is detachably connected with a fixing ring, and a heat dissipation assembly is arranged on the side surface of the flywheel body. Scales are engraved on the edge of the surface of the other side of the flywheel body and used for correcting an oil supply advance angle. The heat dissipation assembly comprises flow deflectors, fins and heat dissipation holes; the heat dissipation holes are formed in the surface of the flywheel body, and flow deflectors and fins are distributed on the surface of the flywheel body. According to the flywheel for the air-cooled diesel engine, air is driven to flow to all positions of the flywheel through the heat dissipation holes and the flow deflectors, air in the center of the flywheel chamber is accelerated to flow through the fins under the action of centrifugal force, and the temperature of the diesel engine and engine oil is reduced; the oil supply advance angle scales are engraved on the edge of the flywheel body to serve as marks, when the oil supply advance angle is corrected, correction can be conducted by looking at the scales on the edge of the flywheel, and correction is more visual and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine accessories and equipment, in particular to a flywheel for an air-cooled diesel engine. Background Art

[0002] The flywheel of a diesel engine is an important part of the engine's mechanical system. The piston movement of a diesel engine is uneven. It has a high speed during the power stroke, but slows down or even stops during the exhaust stroke. The flywheel stores the energy generated by the piston movement through rotation and releases it when needed (such as during the intake stroke) to provide a smooth power output. The flywheel helps balance the engine's speed pulsation, especially for multi-cylinder diesel engines, where the detonation of each cylinder will produce speed differences between each other, and the flywheel can reduce this imbalance. In the absence of auxiliary starting equipment, the flywheel can assist in starting the engine through inertia. Even after the engine is turned off, the flywheel will continue to rotate, allowing more kinetic energy to be used when starting again.

[0003] The existing flywheel heat dissipation is only carried out by the fins set on the surface. The internal space of the oil pump is limited, the air flow is small, and the heat dissipation effect is poor. In addition, the fuel advance angle is an important parameter in the diesel engine fuel injection system. It refers to the crankshaft angle between the start time of fuel injection and the top dead center of the cylinder; correcting the fuel advance angle is mainly to optimize engine performance and ensure that the combustion process is carried out at the best time to improve fuel efficiency and reduce emissions. The existing correction method generally relies on the experience of the operator through continuous trial and error, which is inefficient. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a flywheel for an air-cooled diesel engine, which can solve the existing problems.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] The utility model is realized through the following technical scheme: a flywheel for an air-cooled diesel engine, comprising a flywheel, wherein the flywheel comprises a flywheel body, a heat dissipation component, a fixing ring and a scale; the center of the flywheel body is detachably connected with a fixing ring, and the side surface of the flywheel body is provided with a heat dissipation component; the edge of the other side surface of the flywheel body is engraved with scales, and the scales are used to correct the fuel supply advance angle; the heat dissipation component comprises guide vanes, fins and heat dissipation holes; the heat dissipation holes are opened on the surface of the flywheel body, and the surface of the flywheel body is distributed with guide vanes and fins.

[0007] Furthermore, the fins adopt an arc-shaped sheet structure, the guide vanes adopt an arc-shaped sheet structure, and the side portions of the guide vanes form inclined surfaces.

[0008] Furthermore, two groups of fins and one group of guide vanes are alternately arranged and distributed in a circular array on the surface of the flywheel body; four heat dissipation holes are opened on the surface of the flywheel body in a circular array.

[0009] Furthermore, a through hole is provided on the surface of the flywheel body, the fixing ring is inserted into the through hole, and the fixing ring and the flywheel body are fixed by bolts; a sound insulation gasket is provided on the outer wall of the fixing ring.

[0010] Furthermore, the through hole adopts a structure with one side being conical and the other side being cylindrical, and the fixing ring is adapted to the shape of the through hole.

[0011] Furthermore, a keyway is provided inside the fixing ring, and the fixing ring cooperates with the connecting shaft; the connecting shaft comprises a fixing portion, a connecting portion and a limiting portion which are connected in sequence, and a key bolt is provided on the side of the connecting portion; the connecting portion cooperates with the fixing ring, and the key bolt cooperates with the connecting keyway; the fixing portion cooperates with the connecting locking piece.

[0012] Furthermore, the locking member includes a locking nut, a screw and a base plate, the locking nut is cooperatively connected to the fixing part, and the side of the locking nut has a base plate; the surface of the base plate is threadedly connected to the screw, and a gasket is provided at the end of the screw; the inner edge surface of the flywheel body and the outer edge surface of the fixing ring are provided with rough texture; the gasket of the screw is cooperatively connected to the rough texture.

[0013] Compared with the prior art, the beneficial effects of the utility model include:

[0014] The utility model uses an air-cooled diesel engine flywheel to drive air to circulate to various places of the flywheel through heat dissipation holes and guide vanes. Due to the centrifugal force, the fins are used to accelerate the flow of air at the center of the flywheel chamber, thereby reducing the temperature of the diesel engine and engine oil. The utility model has a scale of the fuel supply advance angle engraved on the edge of the flywheel body as a mark. When correcting the fuel supply advance angle, the correction can be made by looking at the scale on the edge of the flywheel, and the correction is more intuitive and convenient.

[0015] A sound insulation gasket is arranged between the flywheel fixing ring and the flywheel of the utility model, so that the sound insulation effect is better. At the same time, the locking piece of the utility model ensures that the connection between the flywheel and the connecting shaft is more stable through a double locking method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of a flywheel for an air-cooled diesel engine according to the utility model;

[0018] Figure 2 This is a structural schematic diagram of a guide vane in an implementation example of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the other side of the flywheel in the implementation case of the utility model;

[0020] Figure 4 This is a schematic diagram of the flywheel, locking member and connecting shaft structure of an implementation example of the utility model.

[0021] Explanations in the figure: 1. Flywheel; 11. Fixed ring; 111. Keyway; 112. Extension; 113. Sound insulation gasket; 12. Heat dissipation hole; 13. Guide vane; 14. Fin; 15. Flywheel body; 16. Scale; 2. Connecting shaft; 21. Fixed part; 22. Connecting part; 23 and limit part; 24. Key bolt; 3. Locking piece; 31. Locking nut; 32. Screw; 33. Base plate. DETAILED DESCRIPTION

[0022] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0023] A flywheel for an air-cooled diesel engine, exemplarily, Figure 1 As shown, it includes a flywheel 1, and the flywheel 1 includes a flywheel body 15, a heat dissipation component, a fixing ring 11 and a scale 16; the center of the flywheel body 15 is detachably connected with the fixing ring 11, and the side surface of the flywheel body 15 is provided with a heat dissipation component; specifically, the heat dissipation component includes a guide vane 13, a fin 14 and a heat dissipation hole 12; the heat dissipation hole 12 is opened on the surface of the flywheel body 15, and the guide vane 13 and the fin 14 are distributed on the surface of the flywheel body 15; the fin 14 adopts an arc-shaped sheet structure, the guide vane 13 adopts an arc-shaped sheet structure, and the side of the guide vane 13 forms an inclined surface, as shown in FIG. Figure 2 As shown; two groups of fins 14 and one group of guide vanes 13 are alternately arranged and distributed in a circular array on the surface of the flywheel body 15; the surface of the flywheel body 15 is provided with four heat dissipation holes 12 in a circular array; when the flywheel 1 is working, the air is driven to flow to various parts of the flywheel through the heat dissipation holes 12 and the guide vanes 13, and due to the centrifugal force, the fins 14 are used to accelerate the flow of air in the center of the flywheel chamber, thereby reducing the temperature of the diesel engine and the engine oil;

[0024] The edge of the other side of the flywheel body 15 is engraved with a scale 16, and the scale 16 is used to correct the fuel supply advance angle; Figure 3 As shown, a scale 16 for the fuel supply advance angle is engraved on the edge of the flywheel body 15 as a mark. When correcting the fuel supply advance angle, the correction can be made by looking at the scale 16 on the edge of the flywheel.

[0025] The surface of the flywheel body 15 is provided with a through hole, the fixing ring 11 is inserted into the through hole, and the fixing ring 11 and the flywheel body 15 are fixed by bolts to realize the removal of the fixing ring 11. In order to enhance the sound insulation effect during the operation of the flywheel; the outer wall of the fixing ring 11 is provided with a sound insulation gasket 113; Figure 4 As shown, the through hole adopts a structure in which one side is conical and the other side is cylindrical, and the fixing ring 11 is adapted to the shape of the through hole.

[0026] In order to enhance the accuracy and firmness of the connection between the flywheel 1 and the connecting shaft 2, a keyway 111 is provided inside the fixing ring 11, and an overhanging portion 112 is provided on the side of the fixing ring 11, and the fixing ring 11 cooperates with the connecting shaft 2; the connecting shaft 2 comprises a fixing portion 21, a connecting portion 22 and a limiting portion 23 which are connected in sequence, and a key bolt 24 is provided on the side of the connecting portion 22; the connecting portion 22 cooperates with the fixing ring 11, and the key bolt 24 cooperates with the keyway 111; the fixing portion 21 cooperates with the locking member 3; the locking member 3 comprises a locking nut 31, a screw 32 and a bottom plate 33, the locking nut 31 cooperates with the fixing portion 21, and a bottom plate 33 is provided on the side of the locking nut 31; a screw 32 is threadedly connected to the surface of the bottom plate 33, and a gasket is provided on the end of the screw 32; the inner edge surface of the flywheel body 15 and the outer edge surface of the fixing ring 11 are provided with rough lines; the gasket of the screw 32 cooperates with the rough lines. When installing and fixing the flywheel 1 and the connecting shaft 2, first align the through hole of the fixing ring 11 with the fixing part 21 and insert it. Since the limit part 23 blocks the flywheel 1 at the connecting part 22, then align the locking nut 31 with the fixing part 21 and rotate to fix it. After fixing, rotate the screw 32 so that the gasket of the screw 32 presses against the extending part 112 and the flywheel 1 to enhance the firmness of the connection.

[0027] The flywheel of the utility model drives air to circulate to various places of the flywheel through the heat dissipation holes and the guide vanes. Due to the centrifugal force, the fins are used to accelerate the flow of air in the center of the flywheel chamber, thereby reducing the temperature of the diesel engine and the engine oil. The utility model has a scale of the fuel supply advance angle engraved on the edge of the flywheel body as a mark. When correcting the fuel supply advance angle, the correction can be made by looking at the scale on the edge of the flywheel, and the correction is more intuitive and convenient.

[0028] A sound insulation gasket is arranged between the flywheel fixing ring and the flywheel of the utility model, so that the sound insulation effect is better. At the same time, the locking piece of the utility model ensures that the connection between the flywheel and the connecting shaft is more stable through a double locking method.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0032] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A flywheel for an air-cooled diesel engine, characterized in that: The invention comprises a flywheel (1), wherein the flywheel (1) comprises a flywheel body (15), a heat dissipation component, a fixing ring (11) and a scale (16); the center of the flywheel body (15) is detachably connected to the fixing ring (11), and the side surface of the flywheel body (15) is provided with a heat dissipation component; the edge of the other side surface of the flywheel body (15) is engraved with a scale (16), and the scale (16) is used to correct the fuel supply advance angle; the heat dissipation component comprises a guide vane (13), a fin (14) and a heat dissipation hole (12); the heat dissipation hole (12) is opened on the surface of the flywheel body (15), and the guide vane (13) and the fin (14) are distributed on the surface of the flywheel body (15).

2. A flywheel for an air-cooled diesel engine according to claim 1, characterized in that: The fin (14) adopts an arc-shaped sheet structure, the guide plate (13) adopts an arc-shaped sheet structure, and the side of the guide plate (13) forms an inclined surface.

3. A flywheel for an air-cooled diesel engine according to claim 2, characterized in that: Two groups of fins (14) and one group of guide vanes (13) are alternately arranged and distributed in a circular array on the surface of the flywheel body (15); the surface of the flywheel body (15) is provided with four heat dissipation holes (12) in a circular array.

4. A flywheel for an air-cooled diesel engine according to claim 1, characterized in that: A through hole is provided on the surface of the flywheel body (15), the fixing ring (11) is inserted into the through hole, and the fixing ring (11) and the flywheel body (15) are fixed by bolts; a sound insulation gasket (113) is provided on the outer wall of the fixing ring (11).

5. A flywheel for an air-cooled diesel engine according to claim 4, characterized in that: The through hole adopts a structure in which one side is conical and the other side is cylindrical, and the fixing ring (11) is adapted to the shape of the through hole.

6. A flywheel for an air-cooled diesel engine according to claim 1, characterized in that: A keyway (111) is provided inside the fixing ring (11), and the fixing ring (11) cooperates with the connecting shaft (2); the connecting shaft (2) comprises a fixing portion (21), a connecting portion (22) and a limiting portion (23) which are connected in sequence, and a key bolt (24) is provided on the side of the connecting portion (22); the connecting portion (22) cooperates with the fixing ring (11), and the key bolt (24) cooperates with the keyway (111); the fixing portion (21) cooperates with the locking member (3).

7. A flywheel for an air-cooled diesel engine according to claim 6, characterized in that: The locking member (3) comprises a locking nut (31), a screw rod (32) and a base plate (33); the locking nut (31) is connected to the fixing portion (21) in cooperation with each other, and the side of the locking nut (31) is provided with a base plate (33); the surface of the base plate (33) is threadedly connected with the screw rod (32), and a gasket is provided at the end of the screw rod (32); the inner edge surface of the flywheel body (15) and the outer edge surface of the fixing ring (11) are provided with rough lines; the gasket of the screw rod (32) is connected to the rough lines in cooperation with each other.

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