Test bed for detecting positive and negative work of linear moving electric mechanism

Abstract

The invention provides a test bed for detecting positive and negative work of a linear moving electric mechanism, which realizes automation of testing the service life of the positive and negative work of the electric mechanism. The test bed comprises a sliding rod assembly and a positive and negative loading switching system; the number of loading weights is two, and the two loading weights are matched with two bottom weights to form two groups of loading assemblies respectively; the number of variable loading wheels is two, and the center connecting line of the variable loading wheels is parallel to the linear moving work direction; the sliding rod assembly is in matched connection with a linear moving work unit to drive the two variable loading wheels to rotate in the same direction; and the positive and negative loading switching system comprises two groups of windlass assemblies arranged aiming at two groups of loading assemblies and a sensing limit device, wherein the windlass assemblies are used for lifting or lowering the loading weights. The test bed has simple structure, and can efficiently and safely test the work service life of the electric mechanism.

Description

technical field [0001] The invention relates to a test bench for detecting positive and negative work of a load driven by a motor, and is especially applied to automatically loading a linear motion electric mechanism for life test. Background technique [0002] Detecting the positive and negative work of the motor dragging the load can often be converted into the corresponding linear telescopic work by mechanical means, so as to develop a test bench for detecting the positive and negative work of the electric mechanism of the linear motion. If the shaft of the linear electric mechanism works in the "release" and "retract" modes, it needs to be loaded and tested in the two states respectively. The traditional test bench adopts the hanging mound loading method, and only one load-changing wheel is used. The slide bar is connected by the small load-changing wheel pulled by the steel wire rope, and a steel wire rope is fixed on both sides of the large load-changing wheel to conne...

AI Technical Summary

Problems solved by technology

[0010] The invention provides a test bench for detecting positive and negative work of a linear motion electric mechanism, which mainly solves the inconvenience, labor and time-consuming operation of the traditional life test bench, and the inability to quickly and safely perform life testing on the measured linear motion electric mechanism. The problem

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