Large-bearing heat-cutter type press release device

Abstract

The invention discloses a large-bearing heat-cutter type press release device which comprises a reel rope coiling unit, a shell, a compress separation unit, a heat-cutter module and a double-section rope. The shell comprises a compress base, a bottom press bushing, a lower press bushing, an upper compress bushing and a top compress bushing which are arranged sequentially from bottom to top; the reel rope coiling unit and the heat-cutter unit are arranged on the compress base; the compress separation unit is connected with the reel rope coiling unit through the double-section rope; the double-section rope is arranged in the shell to be contacted with the heat-cutter module; one end of the double-section rope is connected with the reel rope coiling unit while the other end sequentially penetrates rope grooves of the bottom compress bushing, the lower compress bushing, the upper compress bushing and the top compress bushing to be rewound by the compress separation unit and connected with the reel rope coiling unit. By the arrangement, requirements on large preload load can be met, and expansion of large-size expansion accessories is adapted.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a large-load hot-knife compression release device. Background technique [0002] In the field of aerospace technology, spacecraft compression release devices are widely used. The spacecraft compression release device is used to provide compression constraints for the spacecraft accessories during the launch phase of the spacecraft; after the spacecraft enters orbit, release the constraints on the accessories according to instructions. [0003] At present, in China, the expansion accessories such as solar wings and flat-panel antennas mostly use pyrotechnic compression release devices such as pin pullers or separation nuts. For example, the patent published in 2011: "Foldable rigid and semi-rigid solar wing secondary compression release Mechanism, CN201128483Y”; another example, a patent published in 2014: “Clamping release device for rod antenna, CN104201455A”. H...

AI Technical Summary

Problems solved by technology

However, there are also many problems in the existing non-pyrotechnic compression release device: 1. The bearing capacity is insufficient to meet the requirements of large preload load; Hooking the unfolding attachment will affect the unfolding function of the unfolding attachment, and even cause the attachment to fail to unfold

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