https://www.huayandynamicseal.com/single-function-underwater-manipulator-for-rov-systems.html
Remotely operated vehicles (ROVs) are widely used for underwater inspection, maintenance, recovery, and other subsea operations. While an ROV provides mobility and visual observation, many underwater tasks also require a tool that can physically interact with objects. This is where a single function underwater manipulator can be useful.
A single function manipulator is designed around a specific underwater operation rather than providing multiple functions through a more complex robotic arm. For an ROV system, this type of underwater arm can provide a dedicated mechanical capability while keeping the overall configuration focused on the intended task.
Nanjing Huayan Dynamic Seal Technology Co., Ltd. provides dynamic sealing solutions for mechanical applications, including demanding environments where moving components require reliable sealing performance.
What Is a Single Function Underwater Manipulator?
A single function underwater manipulator is an underwater mechanical arm designed to perform one primary function. The exact operation depends on the tool installed at its end.
The S1 1-Function Manipulator is designed as a one-function underwater arm and can be equipped with a shearer or other tools for underwater operations. This tool-based configuration allows the arm to support a defined underwater task while providing flexibility for different tool requirements.
How Does It Work with an ROV?
When used with an ROV, the underwater manipulator acts as a working arm attached to the vehicle. The ROV provides the underwater platform, while the manipulator provides the mechanical movement needed for the task.
The operator can position the ROV in the underwater environment and then operate the manipulator according to the requirements of the work. The specific tool mounted on the arm determines the type of operation that can be performed.
For a single function manipulator, the focus is therefore on providing a suitable mechanical action for the selected underwater tool rather than combining multiple independent functions.
A Focused Solution for Specific Underwater Tasks
Not every underwater operation requires a multi-function robotic arm. When a task has a clear mechanical requirement, a one-function arm can provide a more focused solution.
The S1, for example, is a one-function arm that can be equipped with a shearer or other tools to perform underwater work. The arm provides the movement platform for a specific underwater tool rather than being designed around multiple independent functions.
This task-oriented concept can be useful when an ROV system needs a dedicated tool for a particular operation.
S1 Underwater Manipulator for ROV Applications
The S1 is part of the S Series underwater electric arms. It has a standard waterproof depth of 300 m, making it suitable for underwater applications within its rated operating depth.
The arm uses a servo motor as its drive mode, with a rated voltage of 24VDC and rated power of 45W. Communication can be handled through RS485 or PWM, providing options for integration with an underwater control system.
The S1 weighs 2.55 kg in air and 1.58 kg in water. Its main material is Alufer, with a hard anodizing surface treatment. The installation interface uses a base flange.
These characteristics make the S1 a compact electric underwater arm designed around dedicated underwater tool operation.
Using a Shearer Tool with the S1
One of the tools available for the S1 is a shearer. It has a maximum open size of 100 mm, a full open time of less than 10 seconds, and a cutting range of 0–25 mm. The single-side cutting force at the middle position reaches 4000 N.
This configuration illustrates the main concept of a single function underwater manipulator: the arm provides the movement, while the selected end tool determines the specific underwater operation.
Another shearer configuration is also available with the same stated specifications, providing an additional tool option for S1 underwater operations.
Why the Drive System Matters
Because the S1 is an underwater electric arm, its drive system is an important part of its operation. The arm uses a servo motor and operates at 24VDC with a rated power of 45W.
The RS485/PWM communication options also allow the manipulator to connect with a suitable control system. This is relevant when the arm is integrated with an ROV or another underwater robotic platform.
The Importance of Reliable Underwater Operation
An underwater manipulator needs to maintain mechanical operation while working in an underwater environment. Moving components, electrical components, and interfaces all need to work within their specified operating conditions.
Sealing is therefore an important consideration for underwater mechanical equipment. Reliable sealing helps protect internal components from surrounding water while allowing the required mechanical movement to take place.
For Nanjing Huayan Dynamic Seal Technology Co., Ltd., this aspect is closely related to the reliability requirements of underwater electric arms and other moving underwater equipment.
A Practical Approach to ROV Tool Integration
The main value of a single function underwater manipulator is its focused role within an underwater robotic system.
The ROV provides the underwater platform, the arm provides the mechanical movement, and the selected tool provides the specific working function. This creates a clear division between vehicle positioning and task execution.
For applications where a dedicated underwater operation is required, this approach can be more practical than selecting a manipulator with functions that the actual task does not require.
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Nanjing Huayan Dynamic Seal Technology Co., Ltd.
