Space-borne calibration mechanism fault emergency resetting device
A technology of emergency reset and on-board calibration, which is applied to mechanical control devices, devices that prevent/restrict/restore the movement of parts of the control mechanism, and instruments, etc., can solve the problems of heavy weight, low reliability, and large size, Achieve the effect of simple structure, high reliability and high reliability
Active Publication Date: 2015-09-23
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology
[0004] The technical problem solved by the present invention is: to overcome the disadvantages of large volume and heavy weight of mechanical locks and electromagnet devices in the prior art, and the lack of reliability due to the use of electric drive equipment such as motor electromagnets, and provide a An emergency reset device for faults of on-board calibration mechanism
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[0018] The present invention proposes an emergency reset device for faults of the on-board calibration mechanism, such as figure 1 , figure 2 Shown includes memory alloy rod 1, heating rod 2, rod seat 3, first support frame 4, rod cover 5, lever assembly 6, gear pulling out clip 7, first key 8, driving gear 9, coil spring assembly 10, Rotating shaft 11, rotating part 12, second support frame 13, second key 14, driven gear 15, gear separation shaft 16, wherein
[0019] Memory alloy rod 1 is made of titanium-nickel shape memory alloy, with an outer diameter of 9mm, an inner diameter of 6mm, a total length of 140mm, an effective elongation section of 130mm, a shrinkage displacement of 5-5.5mm, and a phase transition temperature of ≥80°C; heating rod 2 The outer diameter is 6mm, the total length is 130mm, two lead wires are led out from the end, the heating rod has a stable power consumption of 45W, and the rated voltage is 28V; the rod seat 3 is a cuboid with a circular through...
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A space-borne calibration mechanism fault emergency resetting device comprises a memory alloy rod (1), a heating rod (2), a rod base (3), a first support frame (4), a rod sleeve (5), a lever component (6), a gear drag clamp (7), a driving gear (9), a coil spring component (10), a rotating shaft (11), and a rotating element (12). When a calibration mechanism fails and resets in emergency, the heating rod (2) is electrified and emits heat, the memory alloy rod (1) drives the lever component (6) to move through the rod sleeve (5), the gear drag clamp (7) is driven to separate the driving gear (9) from the rotating shaft (11), and the coil spring component (10) releases stored torque and drives the rotating element (12) and a remote sensing camera to return to the initial position through the rotating shaft (11). Compared with the prior art, the device of the invention includes a smaller number of components and is simple in structure, mechanism resetting is completed by heating the memory alloy rod, and the device has very high reliability.
Description
technical field [0001] The invention relates to the field of on-board calibration mechanisms, in particular to an emergency reset device for faults of on-board calibration mechanisms. Background technique [0002] The calibration mechanism carried by the satellite or spacecraft is a device that makes the diffuse reflection plate reflect sunlight into the optical path through the driving mechanism to calibrate the visible light, near-infrared and short-wave infrared spectrum. Or the failure of the control circuit will make the diffuse reflector unable to return to the original position normally, and block the imaging optical path, causing the entire imaging system to be paralyzed. Therefore, an emergency reset device for the on-board calibration mechanism is needed when a failure occurs. [0003] The locking and unlocking reset structure in the traditional on-board calibration mechanism includes a mechanical lock and an electromagnet device. The mechanical lock drives the cam...
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IPC IPC(8): G05G5/05
Inventor 贾慧丽赵艳华袁立张秀茜裴景洋马军迟冬南
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH