rivningshammare

A rivningshammare, commonly known in English as a demolition hammer or jackhammer, is a heavy-duty hand-held tool used primarily for breaking up concrete, asphalt, and other hard materials. It operates by delivering rapid, high-strike impact forces through a steel head that strikes a flat face or a chisel tip. The force is generated by compressed air in pneumatic models, batteries in electric models, or by a mechanical hammer mechanism in manual versions.

Pneumatic rivningshammare are the most widely used in construction and demolition work. They connect to an air compressor and consist of a main handle, a vise to hold the bit, and a power cylinder that drives the hammer action. Because the impact force can exceed 50,000 newtons in large models, operators must wear protective gear such as steel-toed boots, hearing protection, and gloves. Electric models are lighter and more portable, making them suitable for smaller jobs like road repair or home renovations where constant air supply is not available.

The design of a rivningshammare has evolved over the past century. Early mechanical hammers used a hammer head struck by a lever, while modern pneumatic versions employ multi-cylinder designs that allow faster impact frequencies and reduced operator fatigue. Closed-loop hydraulic systems enable adjustable impact force, thereby extending the tool’s versatility. Today, rivningshammare remain a staple in many disciplines, including civil engineering, infrastructure maintenance, and salvage operations, due to their ability to deliver consistent, high-energy blows that efficiently fractured strong materials.