Screw drive control system

Abstract

The invention discloses a screw driving control system, which includes a driving mechanism fixed on a beam, a guide lock block, and a limit mechanism; the driving mechanism includes a screw rod driven by a motor and a nut assembly; the nut assembly includes a transmission frame, a sleeve The nut set on the screw rod and the follower part fixed on the nut; the nut is installed in the transmission frame, and the transmission frame is connected to the controlled object; the screw rod drives the nut assembly to reciprocate along the axial direction of the screw rod; the forward rotation process of the screw rod Among them, when the follow-up part touches the guide lock block, it moves to the limit mechanism under the guidance of the upper surface of the guide lock block and is blocked by the limit mechanism. The space between the positioning mechanisms is locked; when the screw rotates in the opposite direction, the follower part rotates in the opposite direction with the screw until it breaks away from the restriction of the guide lock block and is unlocked, and then moves along the axial direction of the screw. The invention solves the safety problem caused by the failure of the electromagnetic lock, and is also simpler and more reliable than the mechanical lock structure.

Description

technical field [0001] The invention relates to the field of automatic control systems, in particular to a screw drive control system. Background technique [0002] The screw drive control system is generally a motor-driven screw, which drives the nut assembly set on the screw to reciprocate, and then drives the controlled object connected to the nut assembly. Generally speaking, the screw drive control system is mostly used in the field of track doors and electric doors, and it also has locking and unlocking functions. Generally used in the screw drive control system in the above fields, the nut assembly is locked by an electromagnetic lock, thereby realizing the function of locking the door. In this form of screw drive control system, the electromagnetic lock must be energized at any time to ensure the stability of the locked door. If the electromagnetic lock is powered off, there will be a risk that the door will automatically open. However, in the prior art, the structu...

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The present invention provides a screw drive control system to solve the problem in the prior art that the door system using electromagnetic locks will automatically turn off when the power is off. The problem of opening, as well as the problems of complex structure, heavy weight, and difficult control of the door system using mechanical locks

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