Electric linear movement device

Abstract

The invention relates to an electric linear movement device. Due to the fact that a reduction box (7) is additionally arranged between a motor (8) and a screw, an integral structure of the device is not enlarged on the premise that the device has large driving force, problems of large unbalance loading and unstable system caused by the large structure are avoided, and movement precision of the device is improved. Further, the reduction box (7) is connected with the screw through a reversing assembly. Specifically, the reduction box (7) is connected with a cross connection rod (4) and an actuating rod (3) provided with a groove, so that the actuating rod (3) moves axially relative to the cross connection rod (4), adverse consequences caused by installation disalignment of the actuating rod (3) and the cross connection rod (4) are avoided, and the actuating rod (3) and the cross connection rod (4) have a function of overload protection when torque transferred by the motor (8) is too large. The electric linear movement device can be widely applied to automatic optical mirror brackets and linear movement mechanisms in other technical fields.

Description

technical field [0001] The invention relates to a linear motion device, in particular to an electric linear motion device based on a reduction box. Background technique [0002] The existing linear motion device is composed of a motor with a screw and a motion flange. The motor driver and controller can form a linear motion system, which is widely used in automatic adjustment of optical mirror frames and linear motion. Such as figure 1 As shown, the existing linear motion device consists of a motor with a screw and a moving flange. The motor rotates and rotates, and the screw nut moves, and the moving flange converts the rotating motion into linear motion. The motion flange is connected with the optical frame or the moving part of the linear motion mechanism to realize linear motion. [0003] Optical frames or linear motion mechanisms usually have larger loads, combined with figure 1 , if the load is too large, a larger motor power with a screw is required, and the optica...

AI Technical Summary

Problems solved by technology

[0003] Optical frames or linear motion mechanisms usually have larger loads, combined with figure 1 , if the load is too large, a larger motor power with a screw is required, and the optical frame or linear motion mechanism usually requires a linear motion device with a small structure. unstable

[0004] Furthermore, the lead of the screw-nut pair composed of the screw of the motor and the nut of the moving flange cannot be made very small, so it is difficult to meet the requirements of high-precision linear motion

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