Tyre-type container gantry crane (RTG for short) is a special machine for stacking operation in the container yard, which uses rubber tyres to walk on the yard and can be transferred to the field, the operation is flexible.RTG is divided into the form of traction trolley and standard trolley form.The whole machine of the RTG adopts the cable reel power supply, and at the same time is equipped with diesel generator sets as a backup in the event of power outage and transfer to the field.
Tyre type container gantry cranes (RTG for short) are suitable for international standard container transport, loading and unloading in container yards and railway container yards, with stable performance, high efficiency and easy maintenance, with proper safety instructions and overload protection equipment to ensure maximum safety of operators and equipment. The electrical system uses PLC frequency regulation, which allows easy control of each mechanism.
RTG Cranes Container Rubber Tyre Gantry Cranes are widely used in outdoor warehouses, container yards, harbours, material yards or workshops for assembling, loading and unloading of goods, cabin control or remote control or dangling lines with push buttons.
Safety features of RTG cranes: automatic deskew control; weight overload protection device; top polyurethane buffer; phase protection; lifting limit switch; cross-travel limit switch; long-travel limit switch; voltage drop protection function.
The bridge is powered by a diesel AC generator set with digital frequency conversion speed control and can be moved in both directions within the container yard. Equipped with telescopic spreader which can lift 20ft and 40ft containers. The spreader of the yard bridge mostly adopts the fixed guide plate. In order to reduce the swaying of the spreader, equipped with mechanical shaking device. In order to the convenience of the box, equipped with a small angle of the spreader slewing device, in order to be able to convert the site operation. There are 00 ~ 900 right-angle steering mechanism. In general, the span of the bridge has been standardised to 23.47 m (six rows plus aisle), can also supply non-standard span of the bridge. The lifting height ensures the lifting of a 40 ft long by 9’6’ high container over four (or five or six) levels of stacking bins.
Safety features of RTG cranes: automatic deskew control; weight overload protection device; top polyurethane buffer; phase protection; lifting limit switch; cross-travel limit switch; long-travel limit switch; voltage drop protection function.
The bridge is powered by a diesel AC generator set with digital frequency conversion speed control and can be moved in both directions within the container yard. Equipped with telescopic spreader which can lift 20ft and 40ft containers. The spreader of the yard bridge mostly adopts the fixed guide plate. In order to reduce the swaying of the spreader, equipped with mechanical shaking device. In order to the convenience of the box, equipped with a small angle of the spreader slewing device, in order to be able to convert the site operation. There are 00 ~ 900 right-angle steering mechanism. In general, the span of the bridge has been standardised to 23.47 m (six rows plus aisle), can also supply non-standard span of the bridge. The lifting height ensures the lifting of a 40 ft long by 9’6’ high container over four (or five or six) levels of stacking bins.
The yard bridge is supported on large tubeless tyres of 4, 8 or 16 wheels. The number of wheels is based on the requirements of the yard wheel pressure. The large vehicle travelling mechanism can be four-wheel or two-wheel drive. In order to prevent mutual collision between yard bridges as well as between yard bridges and containers, there is a manual deflection correction system as well as anti-bumping devices at the four corners of the big vehicle.
The trolley running mechanism can be rack-and-pinion or double-axle or single-axle driven for smooth running. There is a cab under the trolley frame, and the driver operates the whole crane in the cab.
The field bridge adopts AC or DC speed control system with good speed regulation and constant power control, which can automatically adjust the lifting speed according to the different weights in the box.
Straddle Carrier is the main model of container handling equipment, which usually undertakes the horizontal transport from the quay front to the yard as well as the container stacking work in the yard. As the container transporter has the characteristics of manoeuvrability, high efficiency, good stability, low wheel pressure, etc., it has been widely used. Container transporter operation is very favourable to improve the loading and unloading efficiency of the terminal front equipment. Since its introduction in the 1960s, after decades of development, the container straddle carrier has become a key piece of equipment for container terminals and yards, as has the tyre-type container gantry crane.
It spans on the container with portal frame, lifts the container by the hydraulic lifting system equipped with container spreader, carries out the handling, and can stack the container two or three layers high. English name straddle carrier, generally used for short midway transport containers, flexible, fast, the system is composed of hydraulic drive, in the European terminal is widely used. A lifting system based on straddle car is the fastest and most secure choice for medium-sized terminal freight stations; straddle car itself can play the role of an independent system. Straddle carriers are able to meet all the different load handling needs in the container yard: transport and stacking of containers by straddle carrier, as well as loading and unloading of lorries and rail trucks.
Container straddle carrier can be divided into three types according to its body structure type:
Firstly, the container transporter without platform and common structure for straddling and loading/unloading;
Second, there is a platform and cross-transportation and loading and unloading common structure of the container transporter;
Third, there is a platform and cross-transportation and loading and unloading special structure of the container transporter without platform and cross-transportation and loading and unloading of the container transporter common structural type.Its structural characteristics is that the body of the vehicle without a platform, composed of two vertical Ε-type gantry, the upper part is connected by the longitudinal beam, the lower part is supported on the two sides of the bottom beam, the four door legs are generally used in a box-shaped structure, the power unit are installed in the bottom beam. These characteristics determine the type of container transporter external dimensions of small, small turning radius, stacking and through the same number of layers of containers, frame stress situation is good. This type of structure makes the upper mass of the whole machine reduce, effectively reduce the centre of gravity of the whole vehicle, increase the driving stability.
