The invention discloses a sectioned nut type separating mechanism based on memory alloy wire driving rotation unlocking, a sectioned nut has a closed state and a separated state, in the closed state, the sectioned nut is limited by the inner circle of a rotating sleeve in the radial direction, and when the separating mechanism is unlocked and separated, the sectioned nut is separated from the rotating sleeve in the radial direction. The separation driving piece pushes the sectioning nut to expand in the radial direction of the guide groove of the separation guide disc; a rotary driving part is arranged between the rotary sleeve and the central positioning disc, a limiting structure for limiting rotation of the rotary sleeve is arranged between the limiting stopper and the rotary sleeve, and the limiting stopper is connected with a limiting retaining part; the limiting stopper is connected with a memory alloy wire, and the memory alloy wire drives the limiting stopper to axially move away from the rotating sleeve in a power-on state and enables the limiting structure to release limiting; and in the limiting releasing state, the rotary driving piece drives the rotary sleeve to rotate anticlockwise, and the radial constraint of the rotary sleeve on the split nut is released. Therefore, unlocking and resetting are smooth, and the risk that clamping stagnation is likely to happen when a steel ball is used for locking and unlocking and resetting is avoided.
本发明公开了一种基于记忆合金丝驱动旋转解锁的分瓣螺母型分离机构,分瓣螺母具有合拢状态和分离状态,在合拢状态下,分瓣螺母径向被旋转套筒的内圆限位,在分离机构解锁分离时,分离驱动件推动分瓣螺母沿分导盘的导向槽径向张开;旋转套筒与中心定位盘之间设有旋转驱动件,限位器与旋转套筒之间设有限制旋转套筒转动的限位结构,限位器连接有限位保持件;限位器连接有记忆合金丝,记忆合金丝在通电状态下驱动限位器向远离旋转套筒的轴向移动,并使限位结构解除限位;在解除限位状态下,旋转驱动件驱动旋转套筒逆时针转动,并使旋转套筒解除对分瓣螺母的径向约束。因此解锁复位顺畅,避免了采用钢球锁紧在解锁复位时容易发生卡滞风险。
Segmented nut type separation mechanism based on memory alloy wire driving rotation unlocking
一种基于记忆合金丝驱动旋转解锁的分瓣螺母型分离机构
2024-05-07
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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