Trolley mid-brake

An assembly, comprising:

• a trolley body having a first portion positioned within an interior of a strut and a second portion extending through an opening of the strut;
• a locking device coupled to the trolley body, the locking device comprising:
• a main body coupled to the second portion of the trolley body;
• a bar extending through the main body, wherein the bar is rotatable about a central axis;
• and
• a stopper coupled to a first end of the bar, wherein the stopper comprises a magnetic material, wherein in a first position of the bar and the stopper, the stopper is in direct physical contact with the strut, and wherein in a second position of the bar and the stopper, a gap is present between the stopper and the strut.

A method, comprising:

• connecting a trolley body to a strut, the trolley body having a first portion positioned within an interior of the strut and a second portion extending through an opening of the strut;
• coupling a locking device to the trolley body, the locking device comprising:
• a main body coupled to the second portion of the trolley body;
• a bar extending through the main body, wherein the bar is rotatable about a central axis;
• and
• a stopper coupled to a first end of the bar, wherein the stopper comprises a magnetic material;
• moving the bar and stopper relative to the strut, wherein in a first position of the bar and the stopper, the stopper is in direct physical contact with the strut to restrict movement of the trolley body relative to the strut, and wherein in a second position of the bar and the stopper, a gap is present between the stopper and the strut to permit movement of the trolley body relative to the strut.