CN216043993U

CN216043993U - Starting gear with independent fan blades and air-cooled engine

Info

Publication number: CN216043993U
Application number: CN202122434135.7U
Authority: CN
Inventors: 宋秋柳
Original assignee: Aoding Shanghai Fire Equipment Co ltd
Current assignee: Aoding Shanghai Fire Equipment Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-03-15
Anticipated expiration: 2031-10-09

Abstract

Take starting gear and air cooled engine of stand alone type flabellum, including gear body and a plurality of flabellum, be equipped with a plurality of connecting portions on the terminal surface of gear body, the root of flabellum is fixed in on the mounting panel, mounting panel and connecting portion fixed connection. When the engine runs, the fan blades of the cooling fan provide cooling airflow for the engine. According to the utility model, the originally integrated starting gear with the fan blades is divided into the gear body and the fan blades through the independent fan blades, and the gear body can be made of metal materials so as to meet the requirement of strength.

Description

Starting gear with independent fan blades and air-cooled engine

Technical Field

The utility model relates to the mechanical field of air-cooled engines, in particular to a starting gear with independent fan blades and an air-cooled engine.

Background

The starting gear and the radiating blades of the air-cooled engine are usually two independent parts, namely the starting gear is made of a complete solid metal material, and the independent radiating fan is arranged on the outer side of the starting gear. The starting gear and the cooling fan are respectively arranged on the engine crankshaft through a mechanical structure; the structure has the defects of large volume and heavy weight of the engine.

In order to solve the above problems, the utility model patent No. CN201921748500.8 provides a starting gear with air-cooled blades, the roots of the air-cooled blades are arranged on one side end surface of the starting gear; the end part of the air-cooled blade faces the heat radiation body, and the starting gear and the air-cooled blade are combined into a whole, so that the size of the engine is reduced. However, in the proposal, because the starting gear and the blades are integrally formed by injection molding, although the weight is reduced, the problem of insufficient gear strength exists; and the integrated mold opening modeling is more complex and the production cost is higher.

Disclosure of Invention

Aiming at the defects of large volume and insufficient strength of the starting gear and the fan blades of the conventional air-cooled engine, the utility model aims to provide the starting gear with the independent fan blades and the air-cooled engine so as to meet the operation requirement of the engine, and meanwhile, the starting gear is light in weight and reduced in axial size.

In order to achieve the purpose, the technical scheme adopted by the utility model comprises a gear body and a plurality of fan blades, wherein the end face of the gear body is provided with a plurality of connecting parts, the roots of the fan blades are fixed on a mounting plate, and the mounting plate is fixedly connected with the connecting parts. When the engine runs, the fan blades of the cooling fan provide cooling airflow for the engine.

The gear body is provided with a through middle hole, namely the gear body is a ring gear, and the connecting parts are arranged on the edge of the middle hole.

The mounting plate and the gear body are further connected with the magnetic flywheel through the bolts, and the magnetic flywheel is connected with the crankshaft through the key shaft.

The mounting plate is circular, and the mounting plate is fixedly connected with the connecting parts respectively.

Wherein, mounting holes (threaded holes) are respectively arranged on the mounting plate and the connecting part, and the mounting plate is fixedly connected with the connecting part through bolts penetrating into the mounting plate.

The end face of the gear body is provided with a circular limiting step, and the limiting step is matched with the edge of the mounting plate in shape. The limiting step can be used for limiting, matching and installing the cooling fan, the concentricity requirement after combination is guaranteed, and the balance requirement is met

Wherein, flabellum, mounting panel formula injection moulding as an organic whole.

Wherein, the gear body is metal, and/or flabellum, mounting panel are modified POM plastics, its weight is lighter. The utility model also provides an air-cooled engine which comprises the starting gear with the independent fan blade.

Compared with the prior art, the starting gear with the fan blades is originally integrated into the gear body and the fan blades through the independent fan blades, and the gear body can be made of metal materials to meet the requirement of strength; the fan blade made of light materials can also reduce the weight; the limiting step can be used for limiting, matching and installing the fan blades and the annular installing plate, and the concentricity requirement after combination is guaranteed.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic exploded view of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention;

FIG. 4 is a schematic structural view of an air-cooled engine;

referring to the attached drawings, the magnetic flywheel comprises a gear body 1, a mounting plate 2, fan blades 3, limiting steps 4, fixing holes 5, a crankshaft 6 and a magnetic flywheel 7.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, fig. 1 and 2 show an embodiment of the present invention, which mainly includes a gear body and a plurality of blades. Wherein, the gear body is equipped with the mesopore (fretwork) that runs through, and the gear body is ring gear promptly. The four connecting parts are arranged on the edge of the middle hole and extend towards the direction of the circle center to form an inward convex plate-shaped structure; the connecting parts are respectively provided with mounting holes for bolts to pass through.

Preferably, the mounting plate in this embodiment is circular and can be correspondingly mounted at the central hole of the gear body. The mounting plate is also provided with four mounting holes (threaded holes), and the mounting plate is fixedly connected with the four connecting parts through bolts (not shown) penetrating into the mounting plate. Referring to fig. 1, the roots of a plurality of fan blades are fixed around the surface of an annular mounting plate to form a cooling fan; the blades of the fan blades are arc-shaped.

Preferably, referring to fig. 2, the end face of the gear body is provided with a circular limiting step, and the limiting step is arranged around the circumference of the end face of the gear body and is adapted to the shape of the edge of the mounting plate. The limiting step can be used for limiting, matching and installing the cooling fan, the concentricity requirement after combination is guaranteed, the balance requirement is met, and the equipment runs stably.

In this embodiment, the fan blades and the mounting plate (heat dissipation fan) are integrally injection molded, and are made of modified POM plastic, which is light in weight. And the gear body is made of metal to ensure enough strength.

Referring to fig. 3 and 4, an air-cooled engine including a starting gear with independent fan blades as described above has the same technical effects as the above-described embodiments. Referring to fig. 3, when the engine is operated, the gear body and the heat dissipation fan are mounted to the magnetic flywheel through four mounting plates, and the magnetic flywheel and the crankshaft are coupled through a key shaft. Referring to fig. 4, the gear body and the cooling fan are driven by the crankshaft of the engine to rotate anticlockwise, and the blades of the cooling fan provide cooling air flow for the engine, so that the cooling requirements of the cylinder cover and the cylinder body of the engine are met.

After the metal starting gear and the heat radiating fan formed by plastic injection molding are combined, two functions of electric starting and heat radiation for the engine can be met, the whole structure is small in size and light in weight, and the electric starting requirement is met.

The embodiments of the present invention have been described in conjunction with the accompanying drawings and examples, the structures of which are given by way of illustration and not limitation, and those skilled in the art can make modifications as required, and various changes and modifications can be made within the scope of the appended claims.

Claims

1. The utility model provides a take starting gear of stand alone type flabellum, includes the gear body of metal material and the flabellum of a plurality of plastics materials, its characterized in that: the gear is characterized in that the end face of the gear body is provided with a plurality of connecting parts, the roots of the fan blades are fixed on a mounting plate made of plastic, and the mounting plate is fixedly connected with the connecting parts.

2. The starter gear with independent fan blades of claim 1, wherein: the gear body is provided with a through middle hole, and the connecting parts are arranged on the edge of the middle hole.

3. An actuator gear with independent fan blades as claimed in claim 2, wherein: the mounting panel is circular, mounting panel and a plurality of connecting portion fixed connection respectively.

4. An actuator gear with independent fan blades according to any of claims 1-3, wherein: the mounting plate and the connecting part are respectively provided with a mounting hole, and the mounting plate is fixedly connected with the connecting part through a bolt penetrating into the mounting plate.

5. An actuator gear with independent fan blades as claimed in claim 3, wherein: the end face of the gear body is provided with a circular limiting step, and the limiting step is matched with the edge of the mounting plate in shape.

6. An actuator gear with independent fan blades as claimed in claim 4, wherein: the mounting plate and the gear body are further connected with the magnetic flywheel through the bolts, and the magnetic flywheel is connected with the crankshaft through the key shaft.

7. The starter gear with independent fan blades of claim 1, wherein: the fan blades and the mounting plate are integrally formed by injection molding.

8. An actuator gear with independent fan blades according to claim 1 or 7, wherein: the fan blades and the mounting plate are made of modified POM plastic.

9. An air-cooled engine characterized by: comprising an actuator gear with independent fan blades as claimed in any one of claims 1 to 7.