起重量： 1t-120t
起升高度：10m-80m
工作级别：M3、M4、M5
起升速度：3–15m/min
A hydraulic rotary crane (also known as a hydraulic slewing crane, 360° hydraulic crane, marine deck crane, truck-mounted crane, or fixed boom crane) is a heavy-duty lifting machine powered by a hydraulic system, designed to lift, lower, and horizontally rotate heavy loads with exceptional precision and stability. Featuring a robust boom, high-torque hydraulic slewing motor, and advanced load-sensing controls, this crane delivers smooth, reliable operation for industrial, marine, construction, and logistics applications. Unlike mechanical cranes, it uses pressurized hydraulic fluid to drive all core functions—hoisting, luffing (boom angle adjustment), telescoping, and 360° continuous rotation—ensuring powerful performance in compact spaces. Ideal for fixed or mobile installations, hydraulic rotary cranes combine high lifting capacity (1–150 tons) with flexible maneuverability, making them indispensable for modern heavy lifting operations.
Classification
Hydraulic rotary cranes are categorized by installation type, boom design, lifting capacity, and application to meet diverse operational needs:
By Installation Type
Fixed Base Crane: Permanently mounted on docks, factories, or offshore platforms (stationary lifting).
Marine/Deck Crane: Ship-mounted for cargo handling on vessels, offshore rigs, and fishing boats.
Truck-Mounted Crane: Installed on commercial trucks for road mobility and on-site lifting.
Wheel/Tire-Mounted Crane: Mobile chassis with rubber tires for construction sites and yards.
Track-Mounted Crane: Crawler/track base for rough terrain and heavy-duty off-road use.
By Boom Design
Telescopic Boom: Multi-section extendable boom for variable reach and compact transport.
Fixed/Lattice Boom: Rigid, high-strength boom for maximum lifting capacity and stability.
Folding/Knuckle Boom: Articulated boom for tight spaces and precise positioning.
By Lifting Capacity
Small (1–10 tons): Light industrial, workshop, and small marine use.
Medium (10–50 tons): Construction, logistics, and general cargo handling.
Large (50–150+ tons): Heavy construction, offshore, and infrastructure projects.
Key Applications
Marine & Offshore: Ship cargo loading/unloading, offshore rig supply, fishing operations, and vessel maintenance.
Construction: Lifting steel beams, concrete panels, machinery, and prefabricated components.
Industrial & Manufacturing: Factory material handling, equipment installation, and warehouse logistics.
Construction & Mining: Heavy machinery assembly, mining equipment maintenance, and infrastructure projects.
Logistics & Ports: Container handling, freight yards, and intermodal transport.
Utilities & Rescue: Power line maintenance, emergency rescue, and disaster relief operations.
Hydraulic rotary cranes operate on Pascal’s Law—pressure applied to an incompressible fluid transmits equally in all directions—to generate powerful, controlled motion:
Power Source: A diesel engine or electric motor drives a hydraulic pump, which pressurizes hydraulic oil (typically 20–35 MPa).
Control Valves: Operators use joysticks to actuate proportional control valves, directing high-pressure oil to specific actuators.
Lifting (Hoisting): Pressurized fluid flows to a hydraulic winch motor, spinning the drum to wind/unwind steel wire rope and lift/lower the load.
Boom Luffing/Telescoping: Hydraulic cylinders extend/retract to adjust boom angle (luffing) or length (telescoping).
360° Rotation (Slewing): High-torque hydraulic rotary motor drives a planetary gearbox, rotating the upper structure (boom, cab, load) on a slewing bearing for full-circle positioning.
Safety & Braking: Counterbalance valves control load descent; spring-applied, hydraulic-released brakes lock motion when power is off.
Stabilization: Outriggers (on mobile models) extend hydraulically to widen the base and prevent tipping under heavy loads.
Hydraulic rotary cranes outperform mechanical systems with superior power, control, and durability:
360° Continuous Rotation: Full-circle slewing for unmatched positioning flexibility.
High Power Density: Compact hydraulic components deliver massive lifting force (up to 150+ tons) in a small footprint.
Smooth & Precise Control: Proportional hydraulics enable slow, accurate load placement—critical for delicate operations.
Superior Stability: Heavy-duty slewing bearings, rigid booms, and outriggers ensure safe lifting at maximum radius.
Durability & Reliability: Sealed hydraulic systems resist dust, water, and corrosion (IP54+ protection).
Low Maintenance: Fewer moving parts than mechanical cranes; standardized components for easy servicing.
Versatility: Adaptable to fixed, truck, marine, or crawler platforms; customizable booms and attachments.
Safety Features: Overload protection, pressure relief valves, emergency stop, and anti-tip systems.
Energy Efficiency: Load-sensing hydraulics reduce power consumption during light loads.
Common Model Specifications (Fixed/Marine/Truck-Mounted)
| Parameter | Small (1–10T) | Medium (10–50T) | Large (50–150T) |
|---|---|---|---|
| Rated Lifting Capacity | 1t, 3t, 5t, 8t, 10t | 16t, 25t, 32t, 40t, 50t | 60t, 80t, 100t, 120t, 150t |
| Max. Working Radius | 4–12m | 15–30m | 30–45m |
| Max. Lifting Height | 10–25m | 30–50m | 50–80m |
| Boom Type | Telescopic/Fixed | Telescopic/Lattice | Lattice/Telescopic |
| Hoisting Speed | 8–15m/min | 5–10m/min | 3–7m/min |
| Slewing Speed | 0.5–1.2 rpm | 0.3–0.8 rpm | 0.2–0.5 rpm |
| Hydraulic Pressure | 16–25 MPa | 25–32 MPa | 28–35 MPa |
| Slewing Bearing | 4-point contact | Cross-roller | Triple-race |
| Power Supply | Diesel / 380V Electric | Diesel / 380V Electric | Diesel / High-Voltage |
| Protection Grade | IP54–IP56 | IP55–IP56 | IP56–IP67 |
| Rotation Angle | 360° Continuous | 360° Continuous | 360° Continuous |
| Outrigger Span | 2.5–4m | 5–7m | 7–9m |
| Weight | 0.8–5t | 8–25t | 30–60t |
