Constant force unloading device and method for spaceborne loop antenna
A loop antenna, unloading device technology, applied in vibration suppression adjustment, spring/shock absorber, mechanical equipment, etc., to avoid severe deformation
Active Publication Date: 2019-10-22
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology
[0006] The problem solved by the present invention is: to overcome the deficiencies of the existing zero-gravity unloading method, the present invention provides a constant force unloading device and method for a space-borne loop antenna, which can completely overcome the deformation of the antenna crossbar caused by the unloading force. Adjustment, balance the unloading force on the two hinge nodes to achieve the purpose of constant force unloading
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[0029] The present invention will be further described below in conjunction with the drawings.
[0030] Such as figure 1 , figure 2 As shown, a constant-force unloading device is designed according to the unloading method of the present invention, which includes a linear guide 1, a sliding block 2, a fixed pulley 3, an unloading rope 4, a spring scale 5, and a connecting block 6. The slide block 2 and the fixed pulley 3 are installed together by screws, and then the slide block 2 is installed on the guide rail 1 so that it can slide freely along the guide rail 1; the unloading rope 4 bypasses the fixed pulley 3, and a spring scale 5 is connected in the middle of the unloading rope 4 , The connecting block 6 is installed at the end of the unloading rope 4. Factors such as weight and strength margin should be considered when designing each component. In the case of ensuring a sufficient safety margin, light materials such as aluminum and high-strength plastics should be used as m...
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The invention discloses a constant-force unloading device and method for satellite borne loop antennas. The device comprises a linear guide rail (1), a slide block (2), a fixed pulley (3), an unloading ropes (4), spring scales (5) and connecting blocks (6). The fixed pulley (3) is mounted on the slide block (2); the slide block (2) is mounted on the guide rail (1), and can freely slide along the guide rail (1); the unloading ropes (4) are bypassed through the fixed pulley (3); the connecting blocks (6) are mounted at the two ends of the unloading ropes (4), and are mounted in hinge positions at two ends of antenna cross bars; and the spring scales (5) are serially connected to the middle of each unloading rope (4). The constant-force unloading device and method can thoroughly overcome thedeformation of the antenna cross bars caused by unloading force; and through adjustment by the fixed pulley, the unloading force is balanced in two hinge joints to achieve the purpose of constant-force unloading.
Description
Technical field [0001] The invention belongs to the field of spacecraft machinery, and particularly relates to a constant-force unloading method for a spaceborne loop antenna. Background technique [0002] When the space-borne loop antenna is deployed on the ground, a set of zero-gravity unloading device is required to eliminate the influence of gravity and try to simulate the deployment process in a gravity-free environment in space. The design of zero-gravity unloading device generally has the following requirements: a) The unloading force should offset the gravity, and it should be uniform during the unfolding process, and there should be no major changes; b) The application position of the unloading force should be at a position with greater structural rigidity to avoid Structural deformation due to unloading force. [0003] The conventional unloading device currently used is composed of linear guide slider, unloading rope, spring scale, connecting block, etc. The unloading fo...
Claims
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IPC IPC(8): F16F15/00
Inventor 方永刚薛永刚张建波胡建峰陈菲
Owner XIAN INSTITUE OF SPACE RADIO TECH