一种直升机发动机进气防护格栅
By installing heating and adjustment components in the helicopter's air intake protective grille, the icing problem was solved, ensuring unobstructed engine air intake and flexible adjustment of foreign object obstruction, thus improving the helicopter's operational stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN TIANLU JIAHANG TECH CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing helicopter air intake grilles are prone to icing in icy environments, causing blockage of engine air intake and affecting airflow.
The grid structure is formed by mounting base, longitudinal heating component and transverse heating component. The heating component heats up the grid and the engine vibration reduces icing. At the same time, the adjustment component is set to adjust the mesh area. Combined with slider and busbar, the stability and safety are improved.
It effectively reduces icing on the intake grille, ensures smooth engine air intake, adapts to the obstruction requirements of foreign objects in different working environments, and improves engine operating stability.
Smart Images
Figure CN224515285U_ABST
Abstract
Claims
1. A helicopter engine inlet guard grille, characterized in that, The air intake protection device includes a mounting base (1), two mounting bases (1) are symmetrically arranged, a mounting plate (11) is fixedly connected to the mounting base (1), a longitudinal heating component (2) and a transverse heating component (3) are connected between the two mounting bases (1), a mounting hole (12) is opened on the mounting base (1), a slider (13) is embedded in the mounting hole (12), a first elastic element (14) is fixedly connected to one side of the slider (13), one end of the first elastic element (14) is connected to the mounting hole (12), and the two ends of the longitudinal heating component (2) are respectively connected to the two sliders (13).
2. A helicopter engine inlet guard grille according to claim 1, characterised in that: The longitudinal heating assembly (2) includes a first mounting rod (21), the two ends of which are fixed to the two sliders (13) respectively. A first connecting rod (22) is connected between the two first mounting rods (21). Multiple first connecting rods (22) are spaced apart. The two ends of the first connecting rod (22) are rotatably connected to the two first mounting rods (21) respectively. A first heating tube (23) is sleeved on the first connecting rod (22), and a first insulating tube (24) is sleeved on the first heating tube (23).
3. A helicopter engine inlet guard grille according to claim 2, characterised in that: The mounting base (1) has an installation port (15), and a fixing plate (16) is fixedly connected in the installation port (15). The horizontal heating component (3) includes a second mounting rod (31), at least two of which are spaced apart. The second mounting rod (31) has an annular groove (311), at least two of which are spaced apart. A second heating tube (33) is sleeved on the second mounting rod (31), and a second insulating tube (34) is sleeved on the second heating tube (33).
4. A helicopter engine inlet guard grille according to claim 3, characterised in that: An adjustment component (4) is provided inside the mounting base (1), and the two ends of the transverse heating component (3) are respectively connected to the two adjustment components (4).
5. A helicopter engine inlet guard grille according to claim 4, characterised in that: The adjusting assembly (4) includes a pitch rod (41) rotatably disposed in the mounting base (1). The pitch rod (41) has a sliding groove (42) with at least two sliding grooves (42) spaced apart. The spacing of the sliding grooves (42) gradually decreases along the circumference of the pitch rod (41). Both ends of the second mounting rod (31) are fixedly connected to adjusting rods (312). One end of the adjusting rod (312) is embedded in the sliding groove (42) of the pitch rod (41) it is close to. One end of the pitch rod (41) is fixedly connected to a worm gear (43). The worm gear (43) meshes with a worm (44). The worm (44) is rotatably connected to the mounting base (1). One end of the worm (44) is connected to a rotating shaft (45). One end of the rotating shaft (45) extends out of the mounting base (1) and is fixedly connected to a handwheel (46).
6. A helicopter engine inlet guard grille according to claim 3, characterised in that: Both the longitudinal heating component (2) and the transverse heating component (3) are arched.
7. A helicopter engine inlet guard grille according to claim 6, characterised in that: A brush bristle (17) is fixedly attached inside the mounting port (15).
8. A helicopter engine inlet guard grille according to claim 2, characterised in that: A busbar (25) is inserted inside the first mounting rod (21), and the two busbars (25) are electrically connected to the two poles of the first heating tube (23).