Definiția și Sensul lui "put / keep one's shoulder to the wheel"

What is the origin of the idiom "put one's shoulder to the wheel" and when to use it?

The origin of the idiom "put one's shoulder to the wheel" can be traced back to a literal practice in the early days of industrialization. In the 18th and 19th centuries, the phrase referred to the act of physically pushing or turning a wheel, often in the context of machinery or transportation.