Technical parameter:

1. Adopt integral, two-lobed and four-lobed reels;

2. The reel rope groove adopts spiral rope groove pressed by engineering plastic lining, and a steel rope transition device is arranged between the layers;

3. The rear disc brake of the oil cylinder is adopted, and the electric-hydraulic joint control is adopted; the hydraulic station is divided into two types of medium pressure and medium and high pressure. The medium-pressure hydraulic station has two types of constant braking force electrical delay and hydraulic delay two-stage braking; the medium-high pressure hydraulic station has two types of constant deceleration and constant braking torque two-stage braking. The hydraulic station can be equipped with pressure sensors and pressure relays;

4. The main shaft and the reel are connected by a plane large torque friction;