Ball screw rod reverse rotation preventing device

Abstract

The invention provides a device for preventing a ball screw rod from generating reverse rotation for a buoyancy control system of a microminiature underwater robot, and belongs to the technical fieldof buoyancy control of an underwater robot. The device comprises a screw rod motor, a lower reverse rotation preventing wheel, an upper reverse rotation preventing wheel, a motor mounting frame, a left limiting rod, a right limiting rod, a micro-motion switch and an O-shaped ring, wherein the lower reverse rotation preventing wheel which is connected with a screw rod nut is driven to move by the screw rod motor; the left limiting rod and the right limiting rod are connected with the lower reverse rotation preventing wheel through threads; the micro-motion switch is mounted on the motor mounting frame through screws; and the upper reverse rotation preventing wheel is connected with a reverse rotation shaft through fastening screws. The device disclosed by the invention has the beneficial effects that control is performed in a manner of releasing or locking a gear; the reverse rotation of a ball screw rod is prevented through driving the lower reverse rotation preventing wheel to be meshed with the upper reverse rotation preventing wheel by the screw rod motor; the manner is unique and reliable, the structure is simple and compact, and the provided torque is large; and in addition, the up and down position of the lower reverse rotation preventing wheel is accurately measured through the micro-motion switch, so that the purpose of accurate releasing and accurate locking is achieved.

Description

technical field [0001] The invention relates to the technical field of buoyancy adjustment of an underwater robot, in particular to the field of buoyancy adjustment of a piston-cylinder type driven by a ball screw. Background technique [0002] Unmanned untethered autonomous underwater vehicle (AUV) is a kind of underwater robot that can rely on its own energy for autonomous navigation, and it is the main direction of underwater robot development. Underwater buoyancy adjustment is an important and difficult point in the development of AUVs. The research on the buoyancy adjustment system of underwater robots can well avoid problems such as AUV relying on the manipulation of tail rudders or propellers to generate additional water resistance or propeller power consumption. , and AUV has extremely broad application prospects in marine resource exploration, marine information data collection, military exploration, marine rescue, etc. At present, the buoyancy adjustment method of...

AI Technical Summary

Problems solved by technology

At present, the buoyancy adjustment method of the screw driving the piston: 1. Motor plus brake 2. Trapezoidal screw self-locking. The above adjustment methods have small torque of motor plus brake, and low efficiency of trapezoidal screw, which is not suitable for micro underwater robots. buoyancy control system

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