A longitudinal double-rotor helicopter with wind and sand prevention structure

Abstract

The utility model discloses a kind of vertical type double-rotor helicopters with wind-sand prevention structure, it is related to helicopter technical field, including double-rotor helicopter body, the top surface of double-rotor helicopter body is equipped with engine box, the engine box is provided with two, the top surface of two engine box is fixedly connected with transmission seat, the top surface transmission of transmission seat is connected with rotor mechanism, the top surface fixedly connected with multiple air injection ports of transmission seat, the utility model is pumped high-pressure air to air injection port and vertical air outlet in high-speed rotation process in rotor mechanism, high-pressure airflow is injected to the lower portion of main rotor using air injection port, to interfere sand particle in air, vertical airflow is formed air curtain by vertical air outlet output, effectively reduce the intrusion interference of external wind-sand particle to main rotor, improve the wind-sand resistance of the utility model.

Description

Technical Field

[0001] This utility model relates to the field of helicopter technology, and in particular to a tandem twin-rotor helicopter with a wind and sand protection structure. Background Technology

[0002] Helicopters are widely used in many fields due to their unique vertical takeoff and landing and flexible maneuverability. In some areas with harsh natural environments and strong winds and sandstorms, such as deserts and Gobi, helicopters also undertake a variety of important tasks, such as geological exploration, oil pipeline inspection, military reconnaissance and combat.

[0003] Currently, in windy and sandy environments, sand particles have a certain hardness and speed. During helicopter flight, they will continuously impact the helicopter's fuselage, rotor, and other parts. Over time, this will cause wear and corrosion on the surface of the components, reducing their strength and precision, and affecting the helicopter's aerodynamic and mechanical performance. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that during helicopter flight, sand particles constantly impact the fuselage, rotor, and other parts of the helicopter, causing wear and corrosion on the surface of the components over a long period of time, reducing the strength and precision of the components, and affecting the aerodynamic and mechanical performance of the helicopter. The invention proposes a tandem twin-rotor helicopter with a sand-proof structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tandem twin-rotor helicopter with a sand-proof structure, comprising a twin-rotor helicopter body, an engine box mounted on the top surface of the twin-rotor helicopter body, two engine boxes being provided, a transmission seat fixedly connected to the top surface of each of the two engine boxes, a rotor mechanism being drivenly connected to the top surface of the transmission seat, a plurality of jet nozzles fixedly connected to the top surface of the transmission seat, the plurality of jet nozzles being equidistantly distributed on the top surface of the transmission seat, a vertical air outlet being provided on the top surface of the transmission seat, a sand-proof net being fixedly connected to the inner wall of the vertical air outlet, and the jet nozzles and the vertical air outlet being used to connect to a booster pump to eject high-pressure airflow.

[0006] Preferably, the rotor mechanism includes a main rotor, rotor blades, a connector and a drive shaft, wherein the drive shaft is connected through the center of the top surface of the transmission seat and is connected to the power output end of the engine box.

[0007] Preferably, the main rotor is fixedly connected to the top of the drive shaft, and the connector is fixedly connected to the upper outer wall of the main rotor.

[0008] Preferably, one end of the rotor blade is fixedly connected to a blade receiving plate, and one end of the blade receiving plate is fixedly connected to the inner wall of the connector.

[0009] Preferably, the inner wall of the connector is fixedly connected to an air supply pipe, and the end of the air supply pipe is fixedly connected to a diversion pipe.

[0010] Preferably, the end face of the connector is embedded with a jet nozzle, and the jet nozzle is fixedly connected to the splitter pipe.

[0011] Preferably, the bottom surface of the dual-rotor helicopter body is fixedly connected to landing gear.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, during the high-speed rotation of the rotor mechanism, high-pressure air is pumped to the jet nozzle and vertical air outlet by an air pump. The jet nozzle sprays high-pressure airflow onto the lower part of the main rotor, thereby interfering with sand particles in the air. Combined with the vertical air outlet, the vertical airflow forms an air curtain, effectively reducing the intrusion and interference of external sand particles on the main rotor and improving the wind and sand resistance of this utility model.

[0013] 2. In this utility model, an air pump is used to output airflow through an air supply pipe and a split pipe to the jet head. The high-pressure airflow blows the surface of the rotor blades, causing the attached sand particles to be quickly separated from the rotor blade surface, reducing the wear and erosion of the surface by wind and sand, and ensuring the aerodynamic performance of the blades. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a tandem twin-rotor helicopter with a wind and sand protection structure is provided for this utility model. Figure 2 This utility model provides a schematic diagram of the connection structure of a tandem dual-rotor helicopter rotor mechanism with a wind and sand protection structure. Figure 3 This invention proposes a tandem twin-rotor helicopter with a wind and sand protection structure. Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This invention presents a schematic diagram of the internal structure of a tandem twin-rotor helicopter connector with a wind and sand protection structure.

[0015] Legend: 1. Twin-rotor helicopter body; 2. Landing gear; 3. Engine housing; 31. Transmission seat; 32. Vertical air outlet; 33. Sandproof net; 4. Rotor mechanism; 41. Main rotor; 42. Rotor blade; 421. Blade plate; 43. Connector; 431. Air supply pipe; 432. Diverter pipe; 433. Jet nozzle; 44. Drive shaft; 5. Jet outlet. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a tandem twin-rotor helicopter with a sand-proof structure, including a twin-rotor helicopter body 1. An engine box 3 is installed on the top surface of the twin-rotor helicopter body 1. There are two engine boxes 3. A transmission seat 31 is fixedly connected to the top surface of each of the two engine boxes 3. A rotor mechanism 4 is drivenly connected to the top surface of the transmission seat 31. Multiple air nozzles 5 are fixedly connected to the top surface of the transmission seat 31. The multiple air nozzles 5 are equidistantly distributed on the top surface of the transmission seat 31. A vertical air outlet 32 ​​is opened on the top surface of the transmission seat 31. A sand-proof net 33 is fixedly connected to the inner wall of the vertical air outlet 32. The air nozzles 5 and the vertical air outlet 32 ​​are used to connect to a booster pump to spray high-pressure airflow.

[0019] The specific settings and functions of this embodiment are described below. During the high-speed rotation of the rotor mechanism 4, high-pressure air is pumped to the jet nozzle 5 and the vertical air outlet 32 ​​by an air pump. The jet nozzle 5 sprays high-pressure airflow onto the lower part of the main rotor 41, thereby interfering with the sand particles in the air. Combined with the vertical airflow output from the vertical air outlet 32 ​​to form an air curtain, the intrusion interference of external wind and sand particles on the main rotor 41 is effectively reduced, thereby improving the wind and sand resistance of this utility model.

[0020] Example 2: Figure 1 - Figure 4 As shown, the rotor mechanism 4 includes a main rotor 41, rotor blades 42, a connector 43, and a drive shaft 44. The drive shaft 44 is connected through the center of the top surface of the transmission seat 31 and is connected to the power output end of the engine box 3. The main rotor 41 is fixedly connected to the top of the drive shaft 44. The connector 43 is fixedly connected to the upper outer wall of the main rotor 41. One end of the rotor blade 42 is fixedly connected to a blade plate 421. One end of the blade plate 421 is fixedly connected to the inner wall of the connector 43. An air supply pipe 431 is fixedly connected to the inner wall of the connector 43. The end of the air supply pipe 431 is fixedly connected to a splitter pipe 432. A jet nozzle 433 is embedded in the end face of the connector 43. The jet nozzle 433 is fixedly connected to the splitter pipe 432. The landing gear 2 is fixedly connected to the bottom surface of the dual-rotor helicopter body 1.

[0021] The overall effect of this embodiment is that the rotor mechanism 4 is driven to rotate by the engine box 3, which enables the dual-rotor helicopter body 1 to take off and fly. By setting the jet head 433, when the present invention is not flying, the air pump outputs airflow through the air supply pipe 431 and the split pipe 432 to the jet head 433 and sprays it out. The high-pressure airflow blows the surface of the rotor blades 42, which causes the attached sand particles to be quickly separated from the surface of the rotor blades 42, reducing the wear and erosion of the surface by wind and sand, and ensuring the aerodynamic performance of the blades.

[0022] The device's operation and working principle are as follows: The rotor mechanism 4 is driven by the engine housing 3 to rotate, causing the twin-rotor helicopter body 1 to take off and fly. During the high-speed rotation of the rotor mechanism 4, a high-pressure air is pumped into the jet nozzle 5 and the vertical air outlet 32 ​​by an air pump. The jet nozzle 5 sprays high-pressure airflow onto the lower part of the main rotor 41, thereby interfering with sand particles in the air. Combined with the vertical airflow output from the vertical air outlet 32, an air curtain is formed, effectively reducing the intrusion and interference of external sand particles on the main rotor 41. Through the setting of the jet head 433, when the device is not flying, the air pump outputs airflow through the air supply pipe 431 and the split pipe 432 to the jet head 433 for spraying. The high-pressure airflow blows the surface of the rotor blades 42, causing the attached sand particles to quickly separate from the surface of the rotor blades 42.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A tandem twin-rotor helicopter with a wind and sand protection structure, comprising a twin-rotor helicopter body (1), characterized in that: The top surface of the dual-rotor helicopter body (1) is equipped with an engine box (3). There are two engine boxes (3). The top surface of each engine box (3) is fixedly connected to a transmission seat (31). The top surface of the transmission seat (31) is connected to a rotor mechanism (4). The top surface of the transmission seat (31) is fixedly connected to multiple jet nozzles (5). The multiple jet nozzles (5) are equidistantly distributed on the top surface of the transmission seat (31). The top surface of the transmission seat (31) is provided with a vertical air outlet (32). The inner wall of the vertical air outlet (32) is fixedly connected to a sandproof net (33). The jet nozzles (5) and the vertical air outlet (32) are used to connect to a booster pump to spray out high-pressure airflow.

2. A tandem twin-rotor helicopter with a wind and sand protection structure according to claim 1, characterized in that: The rotor mechanism (4) includes a main rotor (41), rotor blades (42), a connector (43) and a drive shaft (44). The drive shaft (44) is connected through the center of the top surface of the transmission seat (31) and is connected to the power output end of the engine box (3).

3. A tandem twin-rotor helicopter with a wind and sand protection structure according to claim 2, characterized in that: The main rotor (41) is fixedly connected to the top of the drive shaft (44), and the connector (43) is fixedly connected to the upper outer wall of the main rotor (41).

4. A tandem twin-rotor helicopter with a wind and sand protection structure according to claim 3, characterized in that: One end of the rotor blade (42) is fixedly connected to a blade connecting plate (421), and one end of the blade connecting plate (421) is fixedly connected to the inner wall of the connector (43).

5. A tandem twin-rotor helicopter with a wind and sand protection structure according to claim 4, characterized in that: The inner wall of the connector (43) is fixedly connected to an air supply pipe (431), and the end of the air supply pipe (431) is fixedly connected to a diversion pipe (432).

6. A tandem twin-rotor helicopter with a sand-proof structure according to claim 5, characterized in that: The end face of the connector (43) is embedded with a jet head (433), and the jet head (433) is fixedly connected to the split pipe (432).

7. A tandem twin-rotor helicopter with a wind and sand protection structure according to claim 1, characterized in that: The landing gear (2) is fixedly connected to the bottom surface of the dual-rotor helicopter body (1).

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