Adopting a three section arm design, the auxiliary arm can rotate 180 °, and the large arm has a hollow design to better protect the oil pipe. Three arms can rotate in a smaller space.

Supporting equipment: South Korean Shuishan hydraulic breaker, equipped with hydraulic shear for cutting anchor rods and cables.

The reinforced working arm is used, equipped with HY120 milling and digging head, wind water dual purpose radiator, and milling and digging spray dust suppression device to reduce the hydraulic oil temperature.

The excavator is equipped with front and rear supports to increase cutting stability.

Driven by a high torque hydraulic walking motor, suitable for slopes of (± 32 °). The split type driver's cab ensures the safety of drivers and is easy to disassemble and assemble, with adjustable height.

2. Main structural forms

2.1 The entire machine is equipped with components such as digging buckets, breaking hammers, and milling heads at the factory, which can achieve functions such as excavation, loading, rock breaking, milling, and leveling of tunnels.

2.2 It has functions such as full section excavation, crushing, and milling excavation.

2.3 Add a quick change device, which can quickly replace the excavator bucket with a crushing hammer or milling head.

2.4 The main components of the hydraulic system, including hydraulic pumps, hydraulic valves, hydraulic hoses, rotary cylinders, joints, and other key hydraulic parts, are selected from imported high-quality products.

2.5 The supporting motor adopts Shandong Shanfang explosion-proof motor.

2.6 The main pump and valve are from the Rexroth brand.