overview
The rubber tyre container gantry crane (refered to “RTG” as below) is used to offload, stack and load 20ft and 40ft containers. The crane contains three mechanisms: hoisting, trolley travelling and gantry travelling. The trolley running along the track which mounted on gantry beam is capable to serve among legs. The crane is able to make straight movement along rails. Full hydraulic drive for crane traveling mechanism with Step less speed change. The long traveling use hydraulic closed circuit with good transmission efficiency, less fault. There are safety indicator and overlord limiter to ensure safety of operators and products. All operation are controlled by CAN-BUS control. The crane is equipped with appropriate container spreader, which should be able to handle single unit 20ft and 40 ft containers；Or twin-lift container; Hoisting mechanism and trolley travel are able to work simultaneously or separately with load; the same applies to gantry travel and trolley travel. Electrical drive of main working mechanism equipped with full digital AC frequency convertor, PLC speed governor and constant power adjustment device for hoisting mechanism.Technical Parameter Table
| Model | LJ35/40-23 | Light Type LJ40-32 |
| Lifting Capacity( under spreader)(t) | 35, 40 | 40 |
| Work Duty | A7, A8 | A6, A7 |
| Span (m) | 23, 47 | 23, 47 |
| Lifting Height (m) | 12.2~17.8 | 16.5 |
| Stack Layers/Passing Layers | 3/4~5/6 | 5/6 |
| Container Model | 20′,40′, 45′ | 20′,40′, 45′ |
| Spreader Rotating Angle | ±5° | ±5° |
| Hoisting Speed (m/min) | 13/26， 23/52 | 12/18, 18/28 |
| Cross Travel Speed (m/min) | 50，70 | 24 |
| Long Travel Speed (m/min) | Full Load-90, Without Load-130 | Full Load-20 Without Load-40 |
| Max. Wheel Load (KN) | 310 | 310 |
| Total Rating (KW) | 150, 230 | 110, 150 |
| Power Supply | Electric, Diesel Engine, Electric-disel Engine | |
Features of RTG
1.Handle 20ft,40ft,45ft container. 2. All mechanism are interlock to ensure operation safety; 3.Wind cable,electric hydraulic rail clamp,anchor, lighting rod etc.as safety device. 4. PLC control, AC frequency speed control, stable and reliable running; 5. Diesel engine power ; 6. Adequate protection devices, communication and lighting system. 7.Crane Monitoring Management system (CMS) to monitor each mechanism working condition and fault diagnose;PAINTING
The RTG shall use the zinc epoxy painting system. They paint could guarantee a minimum paint life of minimum 5 years against cracks, rusty, peeling and discolourtion. Every surface of metal have surface cleaning according to standard sis st3 or sa2.5. Then they are painted with one coat of epoxy zinc rich primer with dry film thickness of 15 microns. The primer coat - shall be painted with one coat epoxy zinc rich primer, dry film thickness of 70 microns. The intermediate paint shall be painted with one coat epoxy micaceous iron oxide, dry film thickness of 100 microns.The finish coat shall be painted with two coats, poly urethane, the thickness of each coat is 50 microns.the total dry film thickness shall be not less than 285 microns to Crane Management System (CMS) The crane management system shall be full computerised operation, complete with sensors and transducers which shall be installed permanently on each crane and work in conjunction with the plc. provide with the monitor to monitoring diagnostics of crane, telling the data collection on the crane’s operating system, operated jointly with the device at least including the electrical power supply device, motor controls, operator control, motor, gear reducers and etc., such programme shall be flexible enough to change or modify by the operator at later stage. Having following function. 1.Condition Monitoring 2.Fault Diagnosis 3.Store the record and display system of the RTG 4.Preventive maintenanceOutline Drawing
