May 30, 2016

Posted by in 2016, Load Carrying Device, Mind Map & Decision tree, News | 0 Comments

Mind Mapping On Load Carrying Device





Labor community across India is lifting, carrying and moving objects on head since a long time. A load carrier would distribute load from head to shoulders and solves the complex traumatic problems caused by work drudgery. Also, it is a multipurpose device that can be used for a wide range of jobs.

Even though we already have a few designs of load carrier available but still they are not efficient enough to be implemented. Laborers carrying heavy loads like cement, brick, grain bags, vegetable bags, and luggage often bear medical injuries like neck pain, back pain, knee – joint pain, and fractures. Thus the aim is to design a load carrier that can ease the manual labor and exertion on the laborer and increase his/her efficiency.

Here we present our pre-requisite analysis and insights towards our Load Carrying problem:




Following are the points according to which we worked on the mind map


  • Understand the potential problems and needs of the
  • workers at present
  • The efficiency of present techniques
  • Easing out their efforts to increase their efficiency
  • Overall mechanism of the device and design features (working as well as comfort) to be included in the load carrier
  • People‚Äôs willingness move on to new techniques and accept the prototype
  • Overall user base of the load carrier and which community of people to focus on
  • Safety measures to be taken
  • Materials required to make the prototype and materials to be carried
  • Cost benefit analysis of the prototype

load carrying mind map

mind mapping load carrying


Links to Prior Art Searches:




  • Construction Sites
  • Madhopur market
  • Kalupur Market
  • Kalupur Railway Stations
  • Jamalpur Market


Keeping the above points in mind we prepared the following questionnaire:

  • How much do you work daily?
  • On what basis are you paid? (Amount of work done / fixed wage for a day)
  • What problems are you presently facing which need to be solved?
  • How much distance do you travel carrying the load?
  • Casualties/damage
  • Health Problems
  • How much do you earn?
  • Are you willing to use some alternatives to the present system of work?
  • What methods you have tried to improve your output
  • How do you walk on the rough surfaces and stairs by carrying the load?
  • Timings of work.
  • Where do you keep your children during working hours
  • What are the different weather conditions in which you have to work
  • Method of loading and unloading
  • Price of the product they can buy
  • Weight distribution of load/Where do you prefer the load to be (head/shoulder)
  • Problems from existing designs and prototypes


load carrying image 2 load carrying image

Load carrying device by Vikram Panchal (NID, Ahmedabad)



The design has two major parts, one that holds the load and the other that rests on the shoulder. Device has two knobs, which facilitates the change of required function manually from one to another in one minute duration. This allows three modular functions for carrying lighter loads on the head, medium loads at the back and heavier loads to push or pull as trolley. Ergonomically the load is distributed on the shoulder and at the lumber support by softer material. The total weight of device is 2 Kgs. and would cost approx. rupees. 300/- in mass production.




  • The aim of the load carrying device is to ease out the task of workers who are constantly involved in lifting heavy loads. The prototype should not be too complex that the workers found it difficult to use it on a daily basis.
  • The time taken to complete the task, efficiency, and safety measures should not be compromised at the expense of the comfort that is provided by the load carrier
  • The prototype must not be such that it is applicability is limited by gender, height etc.
  • The prototype must not be such that it becomes difficult for the workers to find a place to keep it or to travel with it from one point to another. It should preferably be foldable to make easy to keep and transport
  • It should solve all the problems that are faced by already existing prototypes, like balancing of load, poor grip of trays, and appropriateness for women, carrier height and other design aspects etc.
  • The prototype must not be too expensive for the workers/contractors to buy




After the field visit to all the respective places and getting the feedbacks for the existing prototype, we across various optimization goals.


  • Time: It is one of the important aspect which can be significantly improved. Traditional methods of load carrying require a huge amount of time. The use of load carrying device will reduce the time taken to complete the process and hence increase the frequency of load carrying.
  • Amount of Load: Efficient design of device will lead to increase amount of load to be carried then compared to the conventional method of load carrying.
  • Weight Distribution: Right now the conventional method of load carrying leads to weight distribution in a particular part of the body. The load carrying equipment can be designed such that it will lead to distribution of weight in other parts too. This will decrease the muscular effort required for carrying the load.
  • User Comfort: The practices employed in the industry are not friendly to the workers. It is really very uncomfortable for the people for carrying the load. Use of straps would significantly improve the design of the equipment and will lead to user comfortability.
  • Safety: The conventional methods are not safe as they are not balanced, doesn`t have any support system and lead to severe injury in case of imbalance. The device can be designed such that it will increase the safety of the workers by ensuring better grip and support for load carrying.




The new design should be able to:

  1. Relieve the manual exertion on the laborer.
  2. Allows the laborer to single handedly do the work.
  3. Increases time efficiency
  4. Balance
  5. Reduces the weight supported by the laborers body



mind map 3


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