Friction shimmy damping device of nose landing gear
A technology of a pendulum reduction device and a front landing gear, which is applied in the mechanical field, can solve the problems of easy wear of friction pairs, inconvenient inspection and maintenance, and pendulum vibration, and achieve the effect of pendulum reduction.
Inactive Publication Date: 2014-01-22
HARBIN
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Problems solved by technology
Due to the power source components of this technology, the internal structure is relatively complicated and the weight is large
In addition, the friction pair is easy to wear after long-term use, and it is inconvenient to check and maintain. If the wear is too much, it needs to be scrapped and replaced. If the inspection is not in place, there may be potential shimmy
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[0011] The technical conception of the nose gear friction damping device of the present invention is: when the current landing gear receives a load from the ground, the structure can transmit the load to the friction device and provide a positive pressure for the friction component to squeeze. The increase increases. At the same time, one or several parts of the friction device should move synchronously with the vibration of the wheel, and the other or several parts should be kept fixed so that there is relative rotation between the friction parts of the device. Under the action of positive pressure, the friction device always has frictional force output. When the current landing gear vibrates, the frictional force repeatedly does work, thereby consuming the sway reduction energy, thereby realizing the front landing gear sway reduction.
[0012] The materials selected for friction damping components should have wear-resistant properties and will not be severely worn due to short-...
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The invention relates to the field of machinery and provides a friction shimmy damping device of a nose landing gear. According to the friction shimmy damping device, a machine wheel is mounted on a machine wheel shaft of a rocker arm; the upper end of the rocker arm is connected with the lower end of an anti-twisting arm by a shaft; a middle connection point of the rocker arm is connected with an inner barrel by a shaft; the upper end of the anti-twisting arm is connected with a rotary barrel by a shaft; a lower friction sheet is mounted at the upper end of an outer barrel and is fixed in the peripheral direction by a bolt; the rotary barrel is arranged in the outer barrel and the upper part of the rotary barrel is fixed by two nuts; a stop washer is arranged between the two nuts; a tenon of an upper friction sheet is embedded into a clamping groove of the rotary barrel and is fixed in the peripheral direction; a washer is arranged between the upper friction sheet on the rotary barrel and the nuts; the lower surface of the upper friction sheet is in face contact with the upper surface of the lower friction sheet. According to the friction shimmy damping device of the nose landing gear, a pure mechanical structure form and an unpowered source piece design are adopted so as to effectively transmit a ground load to the friction shimmy damping device, a shimmy damping force is increased when a bearing pressure is increased and the shimmy damping of the nose landing gear is realized to the greatest extent.
Description
Technical field [0001] The invention relates to the field of machinery, in particular to a front landing gear friction reduction device. Background technique [0002] The existing friction damping device mainly relies on internal springs and other power source components to provide damping friction damping, and realizes the damping of the nose landing gear through the mutual movement of the friction pairs. This technology has relatively complicated internal structure and heavy weight due to its power source components. Moreover, the friction pair is easy to wear for a long time, and it is inconvenient to inspect and maintain. If the wear is excessive, it needs to be scrapped and replaced. If the inspection is not in place, there is a potential for vibration. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a front landing gear friction reduction device with simple structure and light weight. [0004] The technical solution...
Claims
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IPC IPC(8): B64C25/10B64C25/34
Inventor 季茂龄刁飞萌徐继红宋宪龙宋彦南王庆立
Owner HARBIN