HZ-6(4) Type Center Rotary Rock Grab Vertical shaft mucking equipment, center rotary rock grab manufacturer, HZ rock grab.
The HZ-6(4) Center Rotary Rock Grab is a high-efficiency mucking equipment dedicated to vertical shaft sinking. It is widely used in the construction of vertical shafts with a net diameter of 4 meters or more in coal mines, metal mines, and non-metal mines.
It is mainly used to grab broken loose rock (block size ≤ 500mm) and load it into kibbles, serving as key equipment to improve the efficiency and safety of shaft construction. It has been maturely applied in various mines across the country.
Structure Features & Working Principle:
Structure: Center rotary type, fixed on the hanging platform, compact and efficient.
○ Slewing Mechanism: Optimized bearings and universal joints enable ≥360° smooth rotation with minimal maintenance.
○ Luffing Mechanism: Improved booster cylinder (pneumatic-hydraulic linkage) delivers precise and powerful drive.
○ Hoisting Mechanism: Pneumatic and brake linkage control for accurate lifting/lowering and safe load holding.
○ Control: Centralized control valve operation, allowing single-person operation of all functions.
○ Grab: Grab bucket descends and grabs rock.
○ Lift & Swing: Hoists while rotating above the kibble.
○ Discharge: Fine-tunes luffing, opens bucket to unload.
○ Return: Empty bucket returns to start the next cycle.
By optimizing the slewing bearings, universal joints, and booster cylinder, the machine maintains its compact and flexible design while achieving more stable performance, longer service life, and less maintenance, ensuring safe and fast vertical shaft construction.
| Technical Specifications for the HZ-6 Central Rotary Rock Grabber | |||||||||
| Model | Enhance capabilities | Acceleration | Starter motor power | Rotation angle |
Grab capacity | Working pressure |
Use shaft diameter |
Productivity | Machine quality |
| （Kg） | （m/s） | （KW) | (m³） | （Mpa） | （m） | (m³/h） | （Kg） | ||
| HZ—4A | 1100 | 0.2-0.4 | ≈22 | >360° | 0.4 | 0.5-0.7 | ≥4 | 30-40 | 9400 |
| HZ—6A | 1100 | 0.2-0.4 | ≈22 | >360° | 0.6 | 0.5-0.7 | ≥5 | 50-60 | 10700 |
| Parameter Table of Grab Bucket for Rock Loader | ||||||||
| Volume | Cylinder diameter | Piston stroke | Number jaw plates |
Outer diameteropen jaws |
Outer diameter closed jaws | Working pressure compressed air | Overall dimensions (closed state) | Weight |
| (m³) | （mm） | （mm） | （Piece) | （mm） | （mm） | （Mpa） | （mm） | （Kg） |
| 0.4 | 500 | 575 | 8 | ≥1965 | 1300 | 0.5-0.7 | φ1300×2200 | 1800 |
| 0.6 | 60 | 620 | 8 | ≥2500 | 1600 | 0.5-0.7 | φ1600×2500 | 2500 |
