Cooling turbofan blade for engine

Abstract

The utility model provides a heat dissipation turbofan blade for an engine, and belongs to the field of all-terrain vehicles. According to the structure, an annular piece is fixedly connected to the end face of the CVT driving wheel, a plurality of grooves are formed in the annular piece, through holes are formed in the grooves, bolts penetrate through the through holes and are connected with the CVT driving wheel in a fastened mode, a plurality of strip-shaped holes are formed in the annular piece, and a protruding piece is fixedly connected to one side edge of each strip-shaped hole. An angle of 50-70 degrees is formed between the plane where the protruding piece is located and the plane where the annular piece is located, and reinforcing welding spots are arranged at the two ends of the connecting line of the protruding piece and the strip-shaped hole. The annular sheets are assembled on the basis of an existing structure, on one hand, the radial height is increased, and on the other hand, air supply structures such as the protruding sheets and the strip-shaped holes are constructed on the basis of the annular sheets to play a role of fan blades. The improvement fully improves the pump flow efficiency in the running process of the CVT, so that when the engine runs at a high speed for a long time, the working environment of the CVT can be effectively improved, the cooling effect on the CVT can be achieved, and a series of problems such as belt slipping can be effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the field of all-terrain vehicles, and specifically relates to a cooling vortex fan blade for an engine. Background Art

[0002] Most of the current CVT primary pulley structures on the market are as Figure 1 shown. During the high-speed operation of the CVT transmission driven by the engine, due to the limitation of the CVT primary pulley structure, the blade height is relatively low, resulting in a poor cooling environment for the CVT during operation. Prolonged high-speed operation is likely to cause a decrease in the CVT transmission efficiency and an increase in the CVT failure rate. Abnormal wear failures of components such as belt slipping will occur. Summary of the Invention

[0003] The utility model aims at the technical defects of the existing technology and provides a cooling vortex fan blade for an engine to solve the technical problem that the conventional CVT primary pulley structure is not conducive to heat dissipation.

[0004] To achieve the above technical objectives, the utility model adopts the following technical solutions:

[0005] A cooling vortex fan blade for an engine includes a CVT primary pulley, a CVT secondary pulley, and a CVT belt. Among them, the CVT belt is wound between the CVT primary pulley and the CVT secondary pulley; at the same time, it also includes an annular plate, a groove, a through hole, a strip hole, a tab, and a strengthening solder joint. The annular plate is fixedly connected to the end face of the CVT primary pulley. A number of grooves are provided on the annular plate, and through holes are provided in the grooves. Bolts pass through the through holes and are tightly connected to the CVT primary pulley. A number of strip holes are provided on the annular plate, and a tab is fixedly connected to one side edge of the strip hole. The plane where the tab is located forms an angle of 50° - 70° with the plane where the annular plate is located. Strengthening solder joints are provided at both ends of the intersection line between the tab and the strip hole.

[0006] Preferably, a threaded blind hole is provided on the end face of the CVT primary pulley, and the bolt is tightly connected in the threaded blind hole.

[0007] Preferably, the extending direction of the strip hole forms an angle of 25° - 35° with the radial direction of the position where the geometric center of the strip hole is located.

[0008] Preferably, every two strip holes form a group, and each group of strip holes and each groove are distributed at intervals on the annular plate.

[0009] The utility model provides a heat dissipation vortex fan blade for an engine. On the basis of the existing structure, an annular piece is assembled. On the one hand, the radial height is increased. On the other hand, air supply structures such as convex pieces and strip-shaped holes are constructed relying on the annular piece to play the role of the fan blade. This improvement fully improves the pump flow efficiency during the operation of the CVT. In this way, when the engine runs at a high speed for a long time, it can effectively improve the working environment of the CVT, achieve a cooling effect on the CVT, and effectively avoid a series of problems such as belt slipping.

[0010] The utility model is applicable to the CVT transmission of an all-terrain vehicle, improves the pump flow efficiency during the operation of the CVT transmission of the all-terrain vehicle, and solves the problem of over-high temperature during the operation of the CVT system. The utility model can effectively improve the pump flow efficiency of the CVT, improve the working environment temperature of the CVT, effectively prevent the CVT belt from slipping and a series of quality problems caused by the belt slipping, and greatly reduce the maintenance cost. Brief Description of the Drawings

[0011] Figure 1 is a schematic diagram of the structure of a conventional CVT driving pulley;

[0012] Figure 2 is a schematic diagram of the utility model;

[0013] In the figure:

[0014] 1. CVT driving pulley 2. CVT driven pulley 3. CVT belt 4. Annular plate 5. Groove 6. Through hole 7. Slot 8. Tab 9. Reinforcing solder joint Detailed Description of the Embodiment

[0015] The following will describe the detailed implementation manners of the present utility model in detail. In order to avoid too many unnecessary details, the well-known structures or functions will not be described in detail in the following embodiments. The approximate language used in the following embodiments can be used for quantitative expression, indicating that a certain change in quantity is allowed without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which the present utility model belongs.

[0016] Embodiment 1

[0017] A heat dissipation vortex fan blade for an engine includes a CVT driving pulley 1, a CVT driven pulley 2, and a CVT belt 3. Among them, the CVT belt 3 is wound between the CVT driving pulley 1 and the CVT driven pulley 2; as Figure 2As shown in the figure, it further includes an annular sheet 4, a groove 5, a through hole 6, a strip hole 7, a tab 8, and a reinforcing solder joint 9. Among them, the annular sheet 4 is fixedly connected to the end face of the CVT driving pulley 1. A plurality of grooves 5 are formed in the annular sheet 4, and through holes 6 are provided in the grooves 5. Bolts penetrate through the through holes 6 and are fixedly connected to the CVT driving pulley 1. A plurality of strip holes 7 are provided in the annular sheet 4. A tab 8 is fixedly connected to one side edge of the strip hole 7. The plane where the tab 8 is located forms an angle of 50° to 70° with the plane where the annular sheet 4 is located. Reinforcing solder joints 9 are provided at both ends of the intersection line between the tab 8 and the strip hole 7.

[0018] Embodiment 2

[0019] A cooling fan blade for an engine includes a CVT driving pulley 1, a CVT driven pulley 2, and a CVT belt 3. Among them, the CVT belt 3 is wound between the CVT driving pulley 1 and the CVT driven pulley 2; as Figure 2 As shown in the figure, it further includes an annular sheet 4, a groove 5, a through hole 6, a strip hole 7, a tab 8, and a reinforcing solder joint 9. Among them, the annular sheet 4 is fixedly connected to the end face of the CVT driving pulley 1. A plurality of grooves 5 are formed in the annular sheet 4, and through holes 6 are provided in the grooves 5. Bolts penetrate through the through holes 6 and are fixedly connected to the CVT driving pulley 1. A plurality of strip holes 7 are provided in the annular sheet 4. A tab 8 is fixedly connected to one side edge of the strip hole 7. The plane where the tab 8 is located forms an angle of 50° to 70° with the plane where the annular sheet 4 is located. Reinforcing solder joints 9 are provided at both ends of the intersection line between the tab 8 and the strip hole 7. Among them, a threaded blind hole is provided on the end face of the CVT driving pulley 1, and the bolt is fixedly connected in the threaded blind hole. The extending direction of the strip hole 7 forms an angle of 25° to 35° with the radial direction of the position where the geometric center of the strip hole 7 is located. Every two strip holes 7 form a group, and each group of strip holes 7 and each groove 5 are distributed at intervals on the annular sheet 4.

[0020] The above has described the embodiments of the present invention in detail, but the above content is only the preferred embodiments of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the scope of the application of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat dissipation vortex fan blade for an engine, comprising a CVT driving wheel (1), a CVT driven wheel (2), and a CVT belt (3), wherein, The CVT belt (3) is wound between the CVT driving pulley (1) and the CVT driven pulley (2); it is characterized in that it further includes an annular sheet (4), a groove (5), a through hole (6), a strip hole (7), a lug (8), and a reinforcing solder joint (9). Among them, the annular sheet (4) is fixedly connected to the end face of the CVT driving pulley (1). A number of grooves (5) are formed in the annular sheet (4), and through holes (6) are provided in the grooves (5). Bolts penetrate through the through holes (6) and are fixedly connected to the CVT driving pulley (1). A number of strip holes (7) are provided in the annular sheet (4). A lug (8) is fixedly connected to one side edge of the strip hole (7). The plane where the lug (8) is located forms an angle of 50° to 70° with the plane where the annular sheet (4) is located. Reinforcing solder joints (9) are provided at both ends of the intersection line between the lug (8) and the strip hole (7).

2. The cooling vortex fan blade for an engine according to claim 1, characterized in that, Threaded blind holes are provided on the end face of the CVT driving pulley (1), and the bolts are fixedly connected in the threaded blind holes.

3. The cooling vortex fan blade for an engine according to claim 1, wherein The extending direction of the strip hole (7) forms an angle of 25° to 35° with the radial direction of the position where the geometric center of the strip hole (7) is located.

4. The cooling vortex fan blade for an engine according to claim 1, wherein Every two strip holes (7) form a group, and each group of strip holes (7) and each groove (5) are distributed at intervals on the annular sheet (4).

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