A locking device with forced breaking function and unlocking method

Abstract

The invention discloses a locking apparatus with a forced breaking function. The locking apparatus comprises a ball lock and a ball head, wherein one end of the ball lock is connected with a connector, and one end of the ball head is connected with equipment on a rocket; the ball lock and the ball head can be connected mutually or detached from each other; the ball head comprises a ball head body and a ball head base that are connected mutually; an annular groove is formed in the surface of the ball head body; the ball body in the ball lock can be clamped on the annular groove of the ball head body; a weakening groove is formed in one end of the ball head base; and when pulling force applied to an unlocking pull rod is greater than a certain value, the weakening groove position on the ball head base can be broken in a forced manner. According to the locking apparatus, reliable unlocking is required after the rocket is ignited and is flying for a certain height; a dual-layer unlocking mechanism is adopted, so that the unlocking apparatus is equipped with a redundant unlocking function; after a normal unlocking function of the unlocking apparatus is in failure, the redundant unlocking can be carried out by the forced breaking of the ball head, so that the unlocking reliability is improved.

Description

technical field [0001] The invention relates to a locking device with a forced breaking function and an unlocking method, which are applied in the field of rocket-ground interface equipment such as launch vehicles and missiles that have extremely high requirements for unlocking, or other equipment fields that require high reliability separation or emergency separation. Background technique [0002] According to the overall plan requirements of the CZ-5 launch vehicle model, some connectors are zero-second drop-off connectors, that is, the connectors are allowed to fall off after the rocket is ignited and takes off at a certain height, and the connectors are required to have reliable unlocking performance. At present, my country's launch vehicles and missile models do not have a high-load-capacity locking device that can reliably fall off after ignition and take-off. Ordinary locking devices cannot meet the zero-second reliable fall-off requirements of the connector; in additi...

AI Technical Summary

Problems solved by technology

At present, my country's launch vehicles and missile models do not have a high-load-capacity locking device that can reliably fall off after ignition and take-off. Ordinary locking devices cannot meet the zero-second reliable fall-off requirements of the connector; in addition, when the locking device fails and causes When it cannot be unlocked normally, the existing forced breaking scheme is difficult to process, poor in accuracy, difficult to measure, and the breaking load of the same batch varies greatly, which is not suitable for the working condition of small breaking load. Therefore, it is necessary to design A locking device with a forced breaking function and an unlocking method adapted to actual needs

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