|
|
- Marine reduction transmission series for heavy duty, commercial application comprising:NC:Direct Drive Reduction (without clutch).
- Robust design also withstands continuous duty in workboat applications.
- Fully works tested, reliable and simple to install.
- Compatible with all types of engines and propulsion systems.
- Design, manufacture and quality control standards comply with ISO 9001.
- Easy onboard maintenance.
|
|
Twin Input - Single Output
Twin input - single output gearboxes is often used when variable power to the propeller is required. The gearbox can be operated with one or two engines at the same time. In vessel were extra reliability is required this is a good solution. The engines can either be placed in front or behind the gearbox. PTOs for hydraulic pumps or shaft generator can be delivered.
|
|
Scana Volda Gearboxes have great arrangement flexibility
- Vertical or horisontal offset
- Co-axial offset
- Twin-in single-out versions
- 1 or 2 speed PTO/PTI solutions
- Multiple PTO solutions of 1-8 units
- Integrated hydraulic clutching configurations
|
|
Description:
- Marine reduction transmission series for heavy duty, commercial application comprising:NR:Non-Reversing Reduction (with hydraulic actuated clutch).
- Robust design also withstands continuous duty in workboat applications.
- Fully works tested, reliable and simple to install.
- Compatible with all types of engines and propulsion systems.
- Design, manufacture and quality control standards comply with ISO 9001.
- Easy onboard maintenance.
|
|
Description:
- Robust design also withstands continuous duty in workboat applications.
- Fully works tested, reliable and simple to install.
- Design, manufacture and quality control standards comply with ISO 9001.
- Reverse reduction marine transmission with hydraulically actuated multi-disc clutches.
- Easy onboard maintenance
- Compatible with all types of engines and propulsion systems.
|
|
Scana Volda Gearboxes have great arrangement flexibility
- Vertical or horisontal offset
- Co-axial offset
- Twin-in single-out versions
- 1 or 2 speed PTO/PTI solutions
- Multiple PTO solutions of 1-8 units
- Integrated hydraulic clutching configurations
|
|
Single Stage Gearbox
The reduction gearboxes are designed for engines between 150 kW to 8000 kW. Maximum input speed is from 3200 rpm to 1000 rpm for the largest gearboxes. The reduction ratio is from 2:1 up to 10:1. The largest reduction is done by an additional gear train. The gearboxes can be delivered with PTOs for hydraulic pumps or shaft generator.
The gearboxes are manufactured with following main components:
- Cast steel gearbox housing
- Input shaft arranged for flexible coupling
- Hydraulic operated multi-plate clutch for secure and soft engagement
- Gearwheels with hardened and ground helical teeth for silent operating
- Hydraulic built in servo unit for secure propeller pitch setting
- Output shaft with flange arrangement for propeller shaft coupling
- All bearings of roller type with a low friction losses and long lifetime
- Spherical roller thrust bearing with a low friction losses and long lifetime
|
|
|
|
|
|
|
Marine single input/single output gearboxes are used in river boats and coasting vessels, but also in ocean-going vessels.
Depending on the ships' requirements, they can have either vertically or horizontally but also diagonally offset shafts.
Frequently, a PTO (Power Take Off) is provided to generate inexpensive on-board current. Optionally, the generators can be driven secondarily or primarily, depending on necessity. Furthermore, solutions ensuring PTH (Power Take Home) operation are available. This requirement gains more and more importance, e.g. for vessels carrying dangerous media.
As standard, all gearboxes are equipped with an oil supply system on top and a monitoring system (for unattended operation).
The gearboxes cover a power rating range from 1,000 to 30,000 kW for speed reducing ratios from 1.5 up to approx. 12:1. The propeller shaft thrust bearings are fitted into the gearbox. Accordingly, the housings are of torsionally rigid design, which also ensures perfect meshing of the gear teeth under any condition, even during bad-weather journeys.
|
|
|
|
|
|
|
Actually, marine twin input/single output gearboxes perform different jobs:
They concentrate the power of two or more diesel engines on one propeller
Different speeds of the vessel owing to single input/single output or twin input/single output operation (twin-screw vessels with four engines offer still more flexibility, e.g. during maintenance work on the engines)
Redundant propulsion systems
Frequently, advantage is taken of this flexibility in case of passenger liners, such as ferry boats. PTOs are standard. Frequently, also so-called primary PTOs are provided, i.e. the multiple disk clutches which are fitted on principle for connecting and disconnecting an engine are arranged in such a way, that the PTO can be operated when the engine is running, while the propeller is switched off.
Furthermore, two-speed PTOs are used more and more often, thus achieving still higher propulsion flexibility.
For a cruise liner drive, a twin input/single output gearbox was flexibly mounted in order to ensure that only low structure-borne noise is emitted to the hull.
The largest sailing ship of the world,
the Royal Clipper, was equipped with
two double reduction gearboxes of
the type GVA 1120.
|
|
Generator gearboxes for the generation of inexpensive on-board current are built as separate gearboxes in connection with low-speed diesel engines, and are arranged in the propeller shaft line or on the main engine face. The most varied systems are available.
Flender has also built such systems as two-speed generator gearboxes for PTO/PTI operation.
On the one hand they are used for generating on-board current in PTO operation; on the other hand they can be used in PTI/PTH operation in emergency cases to ensure redundant propulsion capability, the generator becoming a motor and the diesel engine being disconnected by means of a clutch.
|
|
Generator gearboxes for the generation of inexpensive on-board current are built as separate gearboxes in connection with low-speed diesel engines, and are arranged in the propeller shaft line or on the main engine face. The most varied systems are available.
Flender has also built such systems as two-speed generator gearboxes for PTO/PTI operation.
On the one hand they are used for generating on-board current in PTO operation; on the other hand they can be used in PTI/PTH operation in emergency cases to ensure redundant propulsion capability, the generator becoming a motor and the diesel engine being disconnected by means of a clutch.
|
|
| ... products without information |
| |
|
|
see the results for the following category :