一种可快卸的直升机发动机进气道防护网
By designing a quick-release metal mesh protective cover and mounting rod connection assembly for the helicopter engine air intake, the problem of engine damage caused by bird strikes was solved, and the protective net was able to be installed stably and maintained conveniently.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN TIANLU JIAHANG TECH CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
Helicopters are prone to colliding with birds near the ground during flight, which can cause birds or foreign objects to enter the engine air intake and damage the engine.
A quick-release helicopter engine air intake protective net was designed. The protective cover with a metal mesh structure is adapted to the end of the air intake shell, and can be quickly installed and removed through mounting rods and connecting components to prevent birds or foreign objects from entering, while reducing interference with airflow.
It effectively prevents birds or foreign objects from entering the engine, reducing the risk of damage, ensuring normal engine operation, and facilitating the maintenance and replacement of the protective net.
Smart Images
Figure CN224515266U_ABST
Abstract
Claims
1. A quick detachable helicopter engine inlet duct guard characterized by: The protective cover (11) is installed on the end of the air intake housing (3). The protective cover (11) is square and made of metal mesh structure. The middle part of the surface is bent so that one side of the protective cover (11) is concave and the other side is protruding. The concave surface of the protective cover (11) is opposite to the end of the air intake housing (3). The protective cover (11) is adapted to the end of the air intake housing (3). The concave surface of the protective cover (11) is provided with a mounting rod (12). The mounting rod (12) is bent so that its side wall fits and is fixed to the surface of the protective cover (11). The mounting rod (12) protrudes from the protective cover (11) and is located outside the protective cover (11). The protective cover (11) is connected to the air intake housing (3) through the connecting component at the end of the mounting rod (12).
2. The quick-release helicopter engine air intake protective net according to claim 1, characterized in that: The mounting rod (12) is provided in four pieces, and the four mounting rods (12) are arranged in pairs, with the two mounting rods (12) in each pair spaced apart from each other. The two groups of four mounting rods (12) are distributed in a grid pattern.
3. A quick detachable helicopter engine inlet duct guard according to claim 1, characterized in that: The connecting assembly includes a connecting locking block (21), a fixing locking block (22), a locking rod (24), a sleeve (23), and a locking ball (26). The surface of the connecting locking block (21) is fixed to the end face of the mounting rod (12), and the end face of the fixing locking block (22) is fixed to the outer peripheral wall of the air intake housing (3). The connecting locking block (21) and the fixing locking block (22) are positioned correspondingly and their surfaces are opposite to each other. The surface of the connecting locking block (21) has a locking hole (211) that connects the two surfaces. The surface of the fixing locking block (22) A lock groove (221) corresponding to the lock hole (211) is provided. The sleeve (23) is fixedly connected to the lock hole (211) on the surface of the connecting lock block (21). The lock rod (24) slides through the lock hole (211) and the sleeve (23). The sleeve (23) can be inserted into the lock groove (221). The lock ball (26) is movably disposed in the sleeve (23). The lock ball (26) can protrude from the peripheral wall of the sleeve (23) and can be locked in the lock groove (221).
4. A quick detachable helicopter engine inlet duct guard according to claim 3, characterized in that: The locking rod (24) has an annular groove (241) on its peripheral wall. The groove wall of the annular groove (241) is machined into an flared shape. The sleeve (23) has a locking hole (231) on its peripheral wall. The locking hole (231) has a flared shape and the flared opening faces the locking rod (24). The locking ball (26) is located between the annular groove (241) and the locking hole (231).
5. A quick detachable helicopter engine inlet duct guard according to claim 4, characterized in that: The groove wall of the lock groove (221) is flared, and the bottom diameter of the groove is larger than the opening diameter.
6. A quick detachable helicopter engine inlet duct guard according to claim 5, characterized in that: The outer peripheral wall of the locking rod (24) away from the sleeve (23) is machined to form an annular thickened part. A spring (25) is provided in the locking hole (211). The spring (25) is sleeved on the locking rod (24). One end of the spring (25) is fixed to the end face of the sleeve (23), and the other end is fixed to the annular thickened part.
7. A quick detachable helicopter engine inlet duct guard according to claim 2, characterized in that: The mounting rod (12) is provided with a square protective frame (111) on the side away from the protective cover (11), and the protective frame (111) is fixedly connected to the mounting rod (12).
8. A quick detachable helicopter engine inlet duct guard according to claim 1, characterized in that: The protective cover (11) is spaced apart from the end of the air intake housing (3).