introduction and Parameter:

Here is the English translation of the paragraph:

The KF-120 Personnel Carrier is a self-propelled, tire-based vehicle specifically designed for transporting personnel in metal and non-metal underground mines where no explosion protection is required, powered by a diesel engine. It is a commuter vehicle developed by our company for work crews traveling down to and up from the mine, designed in accordance with the relevant technical conditions for small and medium-sized roadways and strictly following national regulations and standards.

The equipment adopts a modular design, featuring a compact structure and easy maintenance. Using this equipment significantly improves operational efficiency and safety. The running chassis uses a hydro-mechanical transmission with an articulated frame and rubber-tired traveling structure, offering high travel speed, smooth gear shifting, a small turning radius, and strong climbing ability.

**Braking system:** Service braking uses fully enclosed multi-disc wet spring brakes. The brake hydraulic circuit is a single circuit equipped with an emergency pressure release device. Parking brake is a normally closed mechanical brake with hydraulic release, providing reliable braking and safety assurance.

The cab and personnel compartment are fully enclosed and equipped with heating and air conditioning. The travel transmission system uses a torque converter to drive the drive shaft. Full-time four-wheel drive is provided. The torque converter has three forward and three reverse speed ratios, featuring stable operation, smooth control, and a high degree of automation.