A Helicopter Periodic Pitch Rod Dustproof Device
A technology of periodical variable distance and dust-proof devices, which is applied in the direction of power plants, aircraft parts, mechanical equipment, etc. Novelty, improved material hardness, generous and beautiful appearance
Active Publication Date: 2018-06-26
CHINA HELICOPTER RES & DEV INST
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- Description
- Claims
- Application Information
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Problems solved by technology
This type of periodic pitch rod dust-proof device can realize the function of sealing the periodic pitch rod assembly and preventing dust from falling in. It has a simple and compact structure and is light in weight. The material of the protective cover is not hard enough, and the maintenance performance is poor
Method used
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Embodiment Construction
[0009] The present invention will be further described in detail below in conjunction with the accompanying drawings. Please refer to the attached Figure 1~2 .
[0010] A kind of dust-proof device for helicopter cycle pitch rod, comprising dust-proof cover 1, dust-proof cover 2, fixed support 3, dust-proof support 4 and self-adhesive Velcro 5, dust-proof cover and dust-proof support 4 are both Thermoplastics are used as raw materials, and the manufacturing method adopts injection molding technology. The shape of the dustproof cover and the dustproof support 4 is fixed and formed by injection molding. Nested with the dust cover 2; the dust-proof support 4 is a wide-mouthed semicircular structure, and the dust-proof support 4 and the dust-proof cover 2 are nested and installed; between the dust-proof support 4 and the fixed support 3 The self-adhesive Velcro 5 is connected and fixed; the fixed support 3 is fixed on the cockpit structure through mounting bolts and nuts.
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The invention relates to a cyclic variable-pitch screw rod dustproof device for a helicopter, in particular to a protective device capable of achieving the purpose of preventing dust from falling into a cyclic variable-pitch screw rod at the bottom of a helicopter cockpit. The cyclic variable-pitch screw rod dustproof device is one of important parts of a helicopter flight control system. The cyclic variable-pitch screw rod dustproof device is used for realizing component sealing of the cyclic variable-pitch screw rod in the cockpit and preventing the situation that as the dust falls into the cyclic variable-pitch screw rod at the bottom of the helicopter cockpit in the daily flight process, the clamping stagnation of a fright control cabling system is caused. The invention provides the cyclic variable-pitch screw rod dustproof device which is brief in structure, attractive in appearance and convenient to maintain, has a new structure and is made of new materials.
Description
technical field [0001] The invention relates to a dust-proof device for a helicopter cyclic pitch change rod, in particular to a protection device capable of preventing dust from falling into the cyclic pitch change rod at the bottom of the helicopter cockpit. Background technique [0002] The dust-proof device of the cyclic pitch rod is one of the important parts of the helicopter flight control system. It is used to realize the sealing of the periodic pitch change rod assembly in the cockpit to prevent the flight control line from being stuck due to dust falling into the bottom of the helicopter cockpit during daily flight. The dust-proof device of the periodic pitch change rod is composed of a protective cover, a fixing device and the like. At present, the dust-proof device of the helicopter cyclic pitch change rod is composed of a rubber sleeve protective cover and a fixing device, which is directly installed on the end of the cyclic pitch change rod. This type of peri...
Claims
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IPC IPC(8): B64D31/04B64C13/04F16J15/02
Inventor 方丽颖邓海侠徐尤松司丹宜冯航赵良
Owner CHINA HELICOPTER RES & DEV INST