Structure of small propeller-driven aircraft additionally provided with generator

Abstract

The utility model discloses a structure for additionally installing a generator on a small propeller aircraft, which comprises a belt pulley additionally installed between an engine and a propeller, the belt pulley is connected with the generator through a belt, the belt pulley is installed on an engine flange through a belt pulley support, and the propeller and the belt pulley support are installed on the engine flange through a propeller installation nut. The belt pulley is installed on the belt pulley support through bolts. When the engine runs, the propeller and the belt pulley rotate simultaneously to drive the belt to move, so that the generator mounted on the engine frame through a proper bracket is driven. According to the design, the structure that the generator is additionally arranged on the small propeller-driven aircraft is provided, and under the condition that the original structure of the aircraft is not changed, sufficient electric power support is provided for refitting of the aircraft.

Description

Technical Field

[0001] The utility model relates to the technical field of aerospace and aviation, in particular to power generation equipment for aircraft. Background Art

[0002] Traditional small propeller aircraft are usually equipped with one or two piston engines, each of which is equipped with a generator driven by the crankshaft. When the engine is running normally, it supplies power to electrical equipment other than the starter and charges the battery at the same time. Generally, when the aircraft is designed, the output power of the generator can meet the needs of its own electrical equipment, but if the aircraft is modified and additional electrical equipment needs to be installed, the original generator may not be able to meet the power needs of the equipment. Utility Model Content

[0003] The technical problem solved by the utility model is that if an aircraft is modified and additional electrical equipment needs to be installed, the original generator may not be able to meet the power demand of the equipment.

[0004] In order to solve the above technical problems, the technical problems solved by the utility model are: a structure for adding a generator to a small propeller aircraft, including a pulley installed between the engine and the propeller, the pulley is connected to the generator through a belt, the pulley is installed on the engine flange through a pulley bracket, the propeller mounting nut installs the propeller and the pulley bracket on the engine flange, and the pulley is installed on the pulley bracket through bolts.

[0005] When the engine is running, the propeller and the pulley rotate simultaneously, driving the belt to move, thereby driving the generator mounted on the engine frame through a suitable bracket.

[0006] The utility model proposes a structure for adding a generator to a small propeller aircraft, which provides sufficient power support for aircraft modification without changing the original structure of the aircraft.

[0007] The pulley bracket includes a left half bracket and a right half bracket, and the left half bracket and the right half bracket are assembled into a disc-shaped pulley bracket. The assembled pulley bracket can absorb the deformation caused by the force applied to the pulley bracket when the propeller mounting nut is tightened, so as to stabilize the pulley and propeller structure.

[0008] The pulley bracket is provided with a middle recessed structure and a connecting lug arranged on the outer side of the pulley bracket, the propeller connecting piece hole is arranged in the middle recessed structure, and the bolt connecting hole is arranged on the connecting lug.

[0009] The pulley is provided with a middle hole, the middle hole is axially aligned with the middle recessed structure, and the propeller is fitted in the middle hole and the middle recessed structure. In this way, the pulley bracket, the pulley, and the propeller structure are stable.

[0010] The pulley includes a middle structure and a peripheral structure, which are connected by rivets. The middle structure is provided with an outer inclined surface, and the peripheral structure is provided with an inner inclined surface, the outer inclined surface is offset against the inner inclined surface, and the pulley groove is provided on the peripheral structure. Under the tension of the belt, the peripheral structure provided with the inner inclined surface can undergo a certain elastic deformation until the inner inclined surface is offset against the outer inclined surface of the middle structure. This elastic deformation can absorb the transmission error of the belt and the pulley when working. The middle structure has a supporting effect on the peripheral structure to enhance the strength of the peripheral structure, thereby improving the strength of the entire pulley. In this way, the pulley has both a certain elastic deformation ability and sufficient strength.

[0011] A reinforcement structure is provided at the rivet joint to enhance the strength of the joint and improve the overall strength of the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings:

[0013] Figure 1 Schematic diagram of adding a pulley to a propeller;

[0014] Figure 2 This is a schematic diagram of the pulley installation;

[0015] Figure 3 is a schematic diagram of a pulley bracket;

[0016] Figure 4 Schematic diagram of the pulley.

[0017] Explanation of symbols in the figure:

[0018] 10. Propeller;

[0019] 20. Pulley; 21. Middle hole; 22. Middle structure; 221. Outer inclined surface; 23. Peripheral structure; 231. Inner inclined surface; 24. Rivet; 25. Reinforcement structure;

[0020] 30. Belt;

[0021] 40. Pulley bracket; 41. Middle recessed structure; 42. Connecting lug; 43. Propeller connecting piece hole; 44. Bolt connecting hole;

[0022] 51. Propeller mounting nut; 52. Bolt. DETAILED DESCRIPTION

[0023] Combination Figure 1 , Figure 2 The structure of adding a generator to a small propeller aircraft includes a pulley 20 installed between an engine and a propeller 10, the pulley is connected to the generator through a belt 30, the pulley is installed on the engine flange through a pulley bracket 40, the propeller mounting nut 51 installs the propeller and the pulley bracket on the engine flange, and the pulley is installed on the pulley bracket through a bolt 52.

[0024] When the engine is running, the propeller 10 and the pulley 20 rotate simultaneously, driving the belt 30 to move, thereby driving the generator installed on the engine frame through a suitable bracket. The utility model provides sufficient power support for the modification of the aircraft by installing a generator on a small propeller aircraft without changing the original structure of the aircraft.

[0025] Combination Figure 2 , Figure 3 The pulley bracket 40 includes a left half bracket and a right half bracket, and the left half bracket and the right half bracket are assembled into a disc-shaped pulley bracket. The assembled pulley bracket 40 can absorb the deformation caused by the force applied to the pulley bracket 40 when the propeller mounting nut 51 is tightened, so that the pulley 20 and the propeller 10 are stable in structure.

[0026] like Figure 3 The pulley bracket 40 is provided with a middle recessed structure 41, and a connecting lug 42 arranged on the outer side of the pulley bracket, a propeller connecting member hole 43 is arranged in the middle recessed structure, and a bolt connecting hole 44 is arranged on the connecting lug.

[0027] The pulley 20 is provided with a middle hole 21, which is axially aligned with the middle recessed structure 41, and the propeller 10 is fitted in the middle hole and the middle recessed structure 41. In this way, the pulley bracket 40, the pulley 20, and the propeller 10 are structurally stable.

[0028] Combination Figure 2 , Figure 4The pulley 20 includes a middle structure 22 and a peripheral structure 23, the middle structure and the peripheral structure are connected by rivets 24, the middle structure is provided with an outer inclined surface 221, the peripheral structure is provided with an inner inclined surface 231, the outer inclined surface is counteracted with the inner inclined surface, and the pulley groove is provided on the peripheral structure. Under the tension of the belt 30, the peripheral structure 23 provided with the inner inclined surface 231 can undergo a certain elastic deformation until the inner inclined surface 231 counteracts the outer inclined surface 221 of the middle structure 22, and this elastic deformation can absorb the transmission error of the belt 30 and the pulley 20 when working. The middle structure 22 has a supporting effect on the peripheral structure 23 to enhance the strength of the peripheral structure 23, thereby improving the strength of the entire pulley 20. In this way, the pulley 20 has both a certain elastic deformation ability and sufficient strength.

[0029] A reinforcement structure 25 is provided at the rivet connection to enhance the strength of the connection and improve the overall strength of the pulley 20 .

[0030] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A structure for adding a generator to a small propeller aircraft, comprising a pulley (20) installed between an engine and a propeller (10), the pulley being connected to the generator via a belt (30), characterized in that: The pulley is mounted on the engine flange via a pulley bracket (40), a propeller mounting nut (51) mounts the propeller and the pulley bracket on the engine flange, and the pulley is mounted on the pulley bracket via a bolt (52).

2. The structure for adding a generator to a small propeller aircraft as claimed in claim 1, characterized in that: The pulley bracket (40) comprises a left half bracket and a right half bracket, and the left half bracket and the right half bracket are assembled into a disc-shaped pulley bracket.

3. The structure for adding a generator to a small propeller aircraft as claimed in claim 1, characterized in that: The pulley bracket (40) is provided with a middle recessed structure (41) and a connecting lug (42) arranged on the outer side of the pulley bracket, a propeller connecting piece hole (43) is arranged in the middle recessed structure, and a bolt connecting hole (44) is arranged on the connecting lug.

4. The structure for adding a generator to a small propeller aircraft as claimed in claim 3, characterized in that: The pulley (20) is provided with a middle hole (21), the middle hole is axially aligned with the middle recessed structure (41), and the propeller (10) is fitted in the middle hole and the middle recessed structure (41).

5. The structure for adding a generator to a small propeller aircraft as claimed in claim 1, characterized in that: The pulley (20) comprises a middle structure (22) and a peripheral structure (23), the middle structure and the peripheral structure are connected by rivets (24), the middle structure is provided with an outer inclined surface (221), the peripheral structure is provided with an inner inclined surface (231), the outer inclined surface abuts against the inner inclined surface, and the pulley groove is opened on the peripheral structure.

6. The structure for adding a generator to a small propeller aircraft as claimed in claim 5, characterized in that: A reinforcement structure (25) is provided at the rivet connection.

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