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Industrial Research And Consultancy Centre
Patent
An Apparatus for Inspection of Rail Tracks
Problem Statement

Railway tracks require regular inspection and maintenance to prevent defects that can cause derailments. Traditional inspection methods, like the mega block, block train routes and require human intervention for hours leading to disruptions and inefficiencies. The proposed solution aims to design an autonomous robot capable of inspecting railway tracks without disrupting train schedules.

Figure (1) Robot in the inspection stage     (2) Robot in the folded stage

Abstract

The present invention relates to an apparatus for inspection of rail tracks without blocking the train route. The apparatus comprises an elevating unit and a retracting unit. The elevating unit having a frame mounted on a lifting mechanism and the retracting unit having a pair of arms coupled with the frame and configured to move between a protracted position and a retracted position with respect to the frame, each arm having a guide wheel such that when the arms are moved in a protracted position, each of the guide wheels is placed on each of the rail tracks. During inspection, the frame is moved to an elevated state by the lifting mechanism and the arms protract to place each of the guide wheels on each of the rail tracks whereby the apparatus travels between the rail tracks; and during idle state of the apparatus, the frame and the arms are in retracted position making the apparatus to rest on the sleepers.

Uniqueness of the Solution
  • Part A and Part B (as shown in the figure) connected via a pivot arm, allowing movement over the tracks. 
  • A scissor jack mechanism that lifts the robot off the track and folds it between the rails. 
  • Autonomous operation with sensors to detect approaching trains and initiate the folding process. 
  • Robust construction to withstand the weight of passing trains without damage.
  • The robot is designed to autonomously move over the fold itself to allow trains to pass without interrupting the inspection process.
  • Upon folding, it allows the train to move over it without any damage to the train and robot. 
  • After the train passes, it should be able to align back on the track and resume moving on the tracks. 
  • This innovation inspects the railway tracks by eliminating the need for human intervention and prevents train route blockages, distinguishing it from existing solutions that are not foldable and require manual operation.
Prototype Details
  • Lifting Mechanism: Scissor jack configuration 
  • Guide Wheels are high-durability rubber or metal with rubber coating for traction.
Current Status of Technology

A lab based prototype has been demonstrated.

Technology readiness level

3

Societal Impact
  • The autonomous rail inspection robot enhances safety by ensuring continuous track monitoring without human intervention or train route disruptions. 
  • It reduces the risk of derailments, improves maintenance efficiency, and minimizes the economic impact of train delays.
Relevant Industries, Domains and Applications

Railway transportation, Robotics and automation, Infrastructure maintenance, Safety engineering

Geography of IP

Type of IP

Application Number

201921024615

Filing Date
Grant Number

467978

Grant Date
Assignee(s)
Indian Institute of Technology Bombay
**This IP is owned by IIT Bombay**