A pitch control rod support structure
A support structure and joystick technology, which is applied in the direction of rotorcraft, aircraft, motor vehicles, etc., can solve the problems of low bearing life, poor reliability, frequent movement of the pitch joystick, etc., and achieve strong anti-wear ability, high reliability, The effect of eliminating potential safety hazards
Active Publication Date: 2015-12-02
CHINA AVIATION POWER MACHINE INST
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Problems solved by technology
[0004] The purpose of the present invention is to provide a support structure for the pitch control rod to solve the technical problem that the pitch control rod moves frequently, resulting in low service life and poor reliability of the bearing used as the support
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[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0024] figure 1 is a structural schematic diagram of the pitch control rod support structure of the preferred embodiment of the present invention; figure 2 It is a structural schematic diagram of the first sliding sleeve in the supporting structure of the pitch control rod in the preferred embodiment of the present invention; image 3 It is a structural schematic diagram of the second sliding sleeve in the supporting structure of the pitch control rod in the preferred embodiment of the present invention.
[0025] Such as figure 1 , figure 2 with image 3 As shown, the pitch control rod support structure of this embodiment includes a pitch control rod 1, a booster control rod 2, an output gear 3 and a tail rotor shaft 4, and the tail rotor shaf...
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The invention discloses a supporting structure of a propeller pitch operating lever. The supporting structure comprises a propeller pitch operating lever (1), a power booster operating lever (2), an output gear (3) and a tail rotor shaft (4), wherein the tail rotor shaft (4) is connected with the propeller pitch operating lever (1) through a spline; the tail rotor shaft (4) and the output gear (3) are connected into a whole through electron beam welding; the propeller pitch operating lever (1) and the power booster operating lever (2) are connected through double-row ball bearings (5) and perform transmission; a first sliding sleeve (6) which supports the propeller pitch operating lever (1) to perform repeated manipulation movement is arranged between the output gear (3) and double-row ball bearings (5); and a second sliding sleeve (7) which supports the propeller pitch operating lever (1) to perform repeated manipulation movement is arranged between the tail rotor shaft (4) and the propeller pitch operating lever (1). The sliding sleeves has high self-lubricating and wear-resistant capability and cannot have faults of excessive wear or overheating and the like due to repeated movement friction, so that the stability of a whole transmission system is guaranteed.
Description
technical field [0001] The invention relates to the technical field of helicopter transmission structures, in particular to a pitch control rod support structure. Background technique [0002] With the development of science and technology, helicopters are used more and more widely. The transmission structure is particularly important for the operation of the helicopter, and the supporting device plays a key role in the stable operation of the transmission of the helicopter. In the previous support structure of the pitch control rod, Bearings are usually used as supporting devices. Bearings need to be designed with a separate lubricating structure or adopt solid lubrication. Bearings are greatly affected by dust and lubrication, and are prone to cracks. After long-term friction, they are prone to breakage and lose their supporting function. Since the pitch control rod must operate together with the tail rotor, it also needs to perform reciprocating motion to control the str...
Claims
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IPC IPC(8): B64C27/82
Inventor 陈江文
Owner CHINA AVIATION POWER MACHINE INST