The SpiRob
Predict. Prevent. Protect. Prosper – with our main module, the SpiRob Gripper
The AUV’s Modularity
This AUV is designed to be modular so it’s prepared for every mission. Designed with customization in mind, the end goal is to allow the AUV to quickly swap between different modules depending on the task ahead. So far the main module we have developed is the SpiRob gripper. Chosen for it’s adaptability and unique bio-inspired design, the SpiRob is ideal for regular canal maintenance.
A step by step view of the SpiRob’s actuation
Press the arrow to continue.
The servo motors on the SpiRob module start to move, causing a string on one side to be pulled back and the string on the opposite side released.
How the SpiRob works
The SpiRob gripper works by using ropes pulled by servos to actuate a robotic arm, allowing it to grab irregularly shaped objects with ease, making it very versatile and suitable for a wide range of different scenarios.
Advantages of the SpiRob
The SpiRob holds large advantage over conventional grippers such as:
Lift Larger Loads
Easily Adjustable
Handling of Various Object Shapes
Hydrodynamic Design
| SpiRob Design Process |
| There are many different types of SpiRob gripper, some with 2, 3 or more strings for multi-directional actuation. However, due to that arrangement only being able to fit three SpiRobs on the attachment we decided to use SpiRob grippers with two strings, as their advantages outweighed the limitations. We also considered 304 stainless steel cables for the strings but found them too rigid to use. Films of both SpiRobs with either 0.9mm fishing rope (can sustain 10kg of weight) or 0.9mm 304 stainless steel rope can be shown below. |
Below you can see our testing while deciding what configuration to use.
Left (metal spool), Center (octahedron) Right (plastic bag)
Summary
We selected the two-strand SpiRob gripper with the high-strength nylon fishing line to maximize object-handling versatility and durability. This configuration supports loads up to 10kg while maintaining the flexibility required for a full curl — a capability restricted by the metal wires. Additionally, the corrosion-resistant fishing line ensures the SpiRob remains maintenance-free over extended periods of operations.
Modular Attachment Design
Our attachment system extends beyond our current, and only module — the SpiRob gripper. Recognizing that specialized tasks require specialized tools, the system features a quick-release interface for effortless customization. Whether your operations require a transition to conventional grippers, or a large camera for inspections, our platform is engineered to evolve alongside customer mission requirements. This ensures our technology remains a future-proof solution for diverse and evolving operational challenges.