★ Adopting hydraulic direction, easy to operate, sturdy and durable; The frame adopts automotive structure and is sturdy and durable with cold riveting technology; Wet multi disc working brake, fail safe emergency and parking brake, safe and reliable; ★ The whole machine has good performance, can adapt to various situations, and has strong climbing ability; The joystick conforms to the principles of ergonomics, providing comfortable and lightweight operation; ★ After modification, it is suitable for auxiliary operations of underground pipe transportation in coal mines.