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●Introduction of equipment features: heavy handling weight; wide space coverage; can replace six-axis robots. ●Examples of usage scenarios: handling and loading, automatic stacking, automatic loading, automatic welding, heavy product handling, long-distance handling, etc.
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Rigid-arm assisted manipulator arms are widely used in the automotive, film, paper and printing, home appliance and electronics manufacturing, machining and casting, food, pharmaceutical and chemical, warehousing and logistics, and new energy industries.
A Suspended Assisted Manipulator Arm (often referred to as a pneumatic balanced crane or zero-gravity overhead lifter) is a sophisticated material handling solution designed to bridge the gap between manual labor and fully automated robotics. By suspending the arm from an overhead rail system or a fixed jib, it provides operators with “weightless” control over heavy or awkward loads.
The system operates on a Zero-Gravity Balance principle. Using a precision pneumatic control system, the manipulator senses the weight of the load and provides an equal counter-acting force.
Pneumatic Balancing: High-sensitivity valves adjust air pressure in real-time to match the load’s mass.
Multi-Axis Articulation: The arm typically features two or three pivot points, allowing for seamless horizontal and vertical movement within a defined radius.
Overhead Suspension: Mounted on a KBK rail, bridge crane, or a wall-mounted jib, saving valuable floor space in crowded workshops.
| Feature | Description |
| Load Capacity | Typically ranges from 50kg to 500kg depending on arm length and air pressure. |
| Working Radius | Standard arms offer a reach of 2m to 4.5m, covering a large workspace. |
| Safety Interlocks | Includes “weight-loss protection” to prevent the arm from snapping upward if a load is accidentally released. |
| End Effectors | Can be equipped with vacuum suctions, mechanical grippers, or magnetic lifters. |
| Rotation | 360° continuous rotation is standard at the main pillar and the tool head. |
Ergonomic Efficiency: It eliminates 100% of the lifting strain on the operator, significantly reducing musculoskeletal disorders (MSDs) and workplace fatigue.
Space Optimization: Unlike floor-mounted column manipulators, the suspended version leaves the floor clear for AGVs, forklifts, or pedestrian traffic.
High Precision: The rigid arm structure prevents the “swing” or “pendulum effect” common with traditional wire rope hoists, allowing for precise positioning in assembly tasks.
Automotive Assembly: Precise installation of car doors, seats, dashboards, and batteries where high positioning accuracy is required.
Mechanical Manufacturing: Loading workpieces into CNC machines or moving heavy engine blocks.
Warehouse & Logistics: Rapid palletizing and depalletizing of boxes, bags, or barrels without physical strain.
Fragile Material Handling: Moving large glass panels or solar modules using specialized vacuum end-effectors.
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