High-reliability driving device for space camera hot protection door
A technology for a space camera and a driving device, applied in the field of aerospace optical remote sensors, can solve problems such as bearing jamming, and achieve the effects of high reliability, avoiding jamming, and strong relative displacement adaptability
Active Publication Date: 2019-01-22
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology
[0005] The problem solved by the technology of the present invention is: in order to overcome the deficiencies of the prior art, the present invention provides a highly reliable drive device for the thermal protection door of a space camera. On the basis of realizing the basic function of opening and closing the thermal protection door, the Switching of the main and backup motors without a switching mechanism, while avoiding the bearing jamming phenomenon caused by the thermal deformation of the supporting structure of the drive device
Method used
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Embodiment Construction
[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] like figure 1 , figure 2 As shown, a thermal protection door driving device for a space camera of the present invention is connected to the thermal protection door 1 by bonding. End support plate 6.
[0029] The active end assembly 2 includes two stepper motors (main part stepper motor 21 and backup stepper motor 22), 2 gear reducers (main part gear reducer 23 and backup gear reducer 24), diaphragm coupling Axle 25 and drive end sleeve 26. Main part gear reducer 23 and backup gear reducer 24 select planetary gear reducer for use.
[0030] The main part stepper motor 21 is connected with the main part gear reducer 23 to form the main part motor reducer assembly. The backup stepping motor 22 is connected with the backup gear reducer 24 to form a backup motor reducer assembly. The output shaft of the primary gear reducer 23 is connected with the output sha...
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The invention discloses a high-reliability driving device for a space camera hot protection door. A hot protection door rotation shaft is installed on the outer surfaces of an active end sleeve and apassive end sleeve. According to the device, a main motor is connected with an auxiliary motor through a diaphragm coupler, on the condition that a switch mechanism is not needed, redundant backup ofthe motor is achieved, the adopted diaphragm coupler does not need to be lubricated, the reliability is high, and the service life is long; the device has high adaptability to relative axial and angle-direction displacement, caused by hot deformation of a supporting structure, of a rotation shaft, a movement supporting mode is adopted for a passive end double-row groove ball bearing to compensatelength change, caused by hot deformation, of the hot protection door rotation shaft, a double-row groove ball bearing inner ring is provided with a radial joint bearing to release the rotation degreeof freedom of the passive end in the three directions, and the situation is avoided that due to hot deformation of the supporting structure of the driving device, the bearing is blocked.
Description
technical field [0001] The invention relates to a driving device for a heat protection door applied to an aerospace optical remote sensor, and belongs to the technical field of the aerospace optical remote sensor. Background technique [0002] The heat protection door and its driving device occupy an important position in the space remote sensor, and are the key devices in the development of the space optical remote sensor. [0003] Installing heat protection doors on space cameras has been widely used in foreign countries. For example, the Hubble Space Telescope uses thermal protection doors to protect sensitive mirrors and instruments inside the telescope from damage from strong light such as sunlight and impact from space debris. The GeoEye series of commercial satellites that provide sub-meter resolution in the United States all use thermal protection doors to ensure the thermal stability of space cameras. [0004] The driving device of the heat protection door drives ...
Claims
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IPC IPC(8): E05F15/614B64G1/58
CPCE05F15/614B64G1/58E05Y2999/00
Inventor 付强强王伟奇孙德伟张博文
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH