This type of pressure cleaning equipment utilizes a belt and pulley system to transfer power from the motor to the pump. This setup contrasts with direct-drive systems where the motor shaft is directly coupled to the pump. A common example involves a gasoline engine powering a high-pressure pump via a belt connected to both components.
The belt-driven mechanism offers several advantages. It allows for a reduction in engine speed, leading to less wear and tear on the pump and a quieter operation. The belt can also act as a shock absorber, protecting the engine and pump from sudden pressure changes. Historically, this design has been favored for its robustness and ease of maintenance, particularly in demanding applications. The relative simplicity of replacing a belt makes it a cost-effective solution for long-term operation.