Design a better stabilizer leg suspension system for a hand truck that adjusts to fit its terrain and has a customizable angle and height for its user.
Novative Designs Inc. designs and manufactures a line of DC-powered, motorized, light material handling equipment. They recently made a new version of their hand truck that has an optional rear stabilizer arm. They call this addition a "stinger." It pivots about an axle to let the hand truck angle vary on hills, ramps or uneven ground.
Novative had only planned on 1200 pounds of force, so the spring assisted shock is too undersized. For example, with an 800-pound load, the forces compressing the spring are calculated to be approximately 8400 pounds. They have not found a shock with a 6” center to center install distance that can handle that load. They need your help!
Your design needs to bolt up to the existing hand truck and provide ample strength, durability, and flexibility. Use an adjustable rate control device such as a spring assisted shock, gas spring or hydraulic shock, or even a simple rubber bushing. View the main image and drawing, below, and use the Download Specifications button to learn more about the existing design.
You must include:
- STEP or IGES file format
- 3D file from any CAD software you choose
- Description explaining your design idea and how it works
- How many of the existing parts can be salvaged, specifically the arm (part number 13027) and the left and right mounting brackets (part numbers 13026L and 13026R)
- Simple, durable and cost effective design
- Option to provide additional deployed stinger positions so user can adjust the preferred angle of the hand truck to suit his/her height and angle preference. For example a low, medium and high position, and then stowed position such as it is now.
The competition is open to everyone. Multiple entries are acceptable. Team entries are welcome - prize will be transferred to team leader. Participants may only win one prize per Challenge.
Tag your entry with “STABILIZERLEG” when uploading to GrabCAD. If you submit through the "Submit entry" button, this should be added automatically. Only entries with valid tag will participate. Only entries uploaded to GrabCAD through the "Submit entry" button on this Challenge page will be considered an entry. Private entries are not eligible.
By entering this competition, you 1. Warrant that the work is your original work. 2. To the best of your knowledge, it is not, and has not been in production or otherwise previously published or exhibited. 3. Neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trade mark, copyright or any other intellectual property right) of any other person.
If you think an entry may infringe on existing copyrighted materials, please email firstname.lastname@example.org.
Applicants are not entitled to any compensation or reimbursement for any costs. The applicant’s participation shall not constitute employment, assignment or offer of employment or assignment.
The sum of the Awards is the total gross amount of the reward. The awarded participant is solely liable for the payment of all taxes, duties and other similar measures if imposed on the reward pursuant to the legislation of the country of his/her residence, domicile, citizenship, workplace, or any other criterion of similar nature. Only 1 award per person.
Only public entries will be considered. Any private submissions will be made public at the Challenge deadline.
We will release the finalists before the final announcement to give the Community an opportunity to "vote" for their favorites in the comments. The jury will take these into consideration when picking the final winner. This new addition is based on feedback from you!
Winning designs will be chosen based on the rules and requirements. This Challenge ends on February 23, 2014 (11:59pm UTC). Winners will be announced by March 23, 2014.
(Update: Feb 21, 2014) EXTENDED deadline. The Challenge will now end February 28, 2014 (11:59pm UTC) and winners will be announced by March 28, 2014.
Void where prohibited.
$1,000 cash + GrabCAD scrapbook
$200 cash + GrabCAD scrapbook
$100 cash + GrabCAD scrapbook
The jury will be comprised of Novative Designs and GrabCAD experts.
Novative Designs Inc designs and manufactures a line of DC-powered motorized light material handling equipment under Haulzall brand.