Autonomous rebar-tying robot developed in US

rebar-tying robot, composite rebar
Credit: account TyBot, LLC on Facebook

Robot TyBot can tie horizontal reinforcing bar made of both composites and steel.

A robotic arm that ties rebar is developed by Advanced Construction Robotics, Inc from Pittsburgh (USA, Pennsylvania). It has primarily been targeted at the bridge decks, but currently it can be used for any horizontal rebar tying.

A robotic arm works on a mobile frame that can expand up to 140 feet across the width of a bridge. Hovering over the rebar intersections, TyBot ties them.

Credit: tybotllc.com

Only one technician supervises the operation, mainly monitoring compliance with safety rules and replacing tie wire. This worker gets the TyBot into position to start and tells it what direction to move then the robot works completely autonomously.

TyBot does not discriminate based on the type of material that comprises the intersection. It will tie plain black rebar, epoxy coated rebar, galvanized rebar, stainless steel rebar or even the newer rebar material like basalt fiber,

says TyBot spokesperson in a comment to Basalt.World

TyBot’s technology allows it to identify reinforcement intersections using computer vision, which is good at night and during the rainy day. The machine doesn’t require pre-programming, additional settings, pre-mapping or calibration.

The robot is capable of approximately 1,000 ties each hour, the productivity depends on the bar spacing and percentage of intersections needing to be tied.

Tied rebar is used to reinforce concrete structures quite widely: bridge decks, roads, foundations, hydraulic structures, chemical product storages, for strengthening coastlines, port facilities and moorings etc.

The construction industry have already expressed great interest in the tying machine, investing in the financial round led by Grouse Ridge Capital in an total amount of $ 4 million dollars.

TyBot transportation. Credit:TyBot, LLC в Facebook

Composite rebar market size is growing fast. Corrosion resistance, light weight, ease of installation and durability contribute to the marketability of composites in the construction industry.

Translated by Olga Yurchenko

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