Task: Olli Door Ingress/ Egress
We would like your help and ideas for a different solutions to Olli's doors and how you enter and exit the vehicle. Keep in mind robust, lightweight, ergonomic, and application based designs. The space need inside Olli for the mechanisms and exterior for the doors to open is important as well as safety and accessibility for passengers entering or exiting the vehicle. Don't be afraid to get creative here! Submit your idea for a door system/type, improvement on existing design, or application based idea for Olli's Ingress/ Egress today.
Here are some existing traditional methods
Will you help with this task?
This sketch brings together some of Olli bus tasks:
1 - noses anti-collision/crash,
2 - Roll-off trolley system for the batteries (items 1 and 2 are the same thing),
3 - I was inspired by old Caboose cars of North American railways,
4 - why do not make bidirectional Olli, as the railcars?
5 - all four wheels are steerable,
6 - access doors: two hinges back doors of 6-8 inches,
7 - pneumatic actuators and ... why do not use the stepper motors (foot-foot motors)?
8 - four different hypotheses of interior furnishings 6, 8, 9 and 10 seats. Only the version with 10 seats does not carry a disabled (but olny a stroller).
Door-ramp telescopic (1.3 x 1.95 metres)
Hi! My name is Riley, and I'm part of a team from ASU that will be looking into the Olli Door. We currently have a few ideas we'll be looking into in the near future, with something concrete by the end of this year, and a functional prototype by May 2017.
If anyone's reading this, know that your ideas matter to us. Tell us what you've got in mind, and we'll make it a reality!
At today's meeting, ASU team Rarefied Redesign: -Analyzed Customer Needs -Defined Functionality -Analyzed System Requirements and Subsystems -Selected 3 primary concepts ---1. "Garage Door" ---2. "Drawbridge" ---3. "Solid Ramp" -Allocated Research Topics -Created Action Item Schedule -Assigned Action Items ---Gantt Chart Creation ---IPR#1 Creation -Planned for LM Meeting 2
Team Rarefied Redesign
October 5th 2016
At today's meeting, team Rarified Redesign made significant progress in the conceptualization and research processes.
The Drawbridge idea was immediately eliminated based off of research performed; it was deemed unfit for the situation at hand. The Solid Ramp idea was quickly identified as the preferred method in regards to simplicity and weight capacity, but was removed due to depth constraints within the existing Olli design.
This left the Segmented ramp idea, which quickly branched out into three more ideas.
-The First idea was a returning one, in which numerous thinner segments roll into a space-saving design. This is currently called the "Roll-up" design.
-The Second idea was also a returning concept, in which we utilize only two segments in what would likely be a simpler, stabler design. The design calls for a way to drag one segment behind the other when deploying only.
-The Third concept was realized on-the-spot, taking inspiration from folding stairs and step ladders. Using a series of connecting arms, a series of platforms can go from a box-like shape to a solid ramp, which will the only need to be positioned appropriately.
At the next meeting, all members will be submitting their own Decision Matrix, which will lead to an amalgamated Matrix which will guide our decisions after.
Wednesday: The meeting began by reviewing the CAD model mock-ups made to better illustrate the concepts proposed by various team members. CAD Concepts included the Roll-Up concept and the newly-dubbed "Two-Slab" concept, with two team members promising two more concepts by the next meeting with Local Motors. Two other team members presented the results of their patent research, concluding that while most of the proposed concepts had been patented in some context, the roll-up concept seemed to be untouched. Friday: Team Rarefied Redesign spoke with Local Motors partner Alaric Egli and reviewed a series of CAD files which portrayed our various design concepts. Of note were a Telescoping Ramp, a pair of Flip-out concepts, the Two-Slab idea, and the Roll-up concept. The Telescoping Ramp would need more work designing the internal structure, the Flip-out designs were acceptable, the Two-Slab idea wasn't very good, and the Roll-up design remained the most interesting. Also that the Carbon-based 3D Printing material they have access to at local motors has similar properties to that of a hard wood, such as maple.
Typical bus door designs include folding doors, doors that open to the outside, and sliding doors. Of these, doors that open to the outside would be the simplest. A locking mechanism would prevent passengers from accidentally egressing the vehicle while it is moving. such designs have been in use since at least the 1960's. Since the door opens to the outside, no room is needed in the passenger compartment.
The second design, folding doors, has also been in use for at least as long (the 1960's). Unlike the door design above, a folding door, also opening up to the outside, presents less door mass to the outside, as folding gives the door a smaller profile. All doors opening to the outside are potential hazards for passengers waiting to board Olli. As such, these doors would have to be equipped with both flashing lights and an audible tone to warn passengers.
The last design, sliding doors, also presents its own set of challenges. Sliding doors can potentially jam fingers and even pin passengers in partly closed doors. These would also have to be fitted with light and tone warnings. Sensors need to be placed in the door to detect errant passengers who could potentially be pinned. Sliding doors have been used on elevators and subway cars since at least the 1960's.
Of the three designs discussed above, the sliding doors present the greatest challenge. the doors have to detect when passengers are in the doorway, detect whether a passenger is about to be pinned in the door, and operate smoothly regardless of what actions passengers take, such as struggling to free themselves from the door, forcible jamming of the doors open, and the like.
Another more rare design, known as the gull wing has been implemented in a car named the De Lorean, made famous by the movie series "Back to the Future". Such doors must balance the force of gravity with the upward force holding the doors in place.
Motorized versions of these doors have been implemented in the rear doors of SUV's in order to eliminate the need of the driver to open the door by hand. This feature is especially handy when the driver arrives at the vehicle with a handful of groceries, luggage, or whatever. Some designs use proximity sensors and a foot pedal. The door will not open unless the driver's keyfob is within range of the vehicles sensors.
so basically this is a design that is just some out of the box idea I had and would require a couple of solenoids to pop the door out and then 1or 2 electric motors depending on the design to lift and rotate the doors upwards. I think it would be a very attractive, functional, and creative way to welcome the occupants. I also believe that it would be better utilized on a pre-production vehicle until the bugs were worked out of this design. Let's try to evolve this idea into something that works
During the meeting, team RR has assigned new tasks and action items for the remainder of the semester to maintain progress of the Olli project. Also, a list of materials needed to manufacture the current preliminary designs is being created. Any insight or advice on materials needed to manufacture is welcomed. A Bill of Materials is currently being created for each preliminary design as well. The contents of an industry progress report have been assigned. Minor changes have been made to the models since the last meeting. The screenshots are shown below. Lastly, more details are currently being added to finalize the CAD models in a timely manner.
The idea is to seat the entire Olli body on the ground, down a small side ramp to allow access / exit of wheelchairs.
This idea is similar to my old: https://launchforth.io/germano...
Thursday 11/3 In our first meeting with our Technical Mentor, we discussed potential issues with our three designs. In particular, he believes that smaller hydraulic systems, such as those used in medical applications, would be very well-suited to our applications. Friday 11/4 Prior to the meeting, the team met and did some light research and conversed regarding lessons learned from the day before. The next section of the meeting was spent going through our existing designs and detailing how we might make them work. Armed with new knowledge and context, we reevaluated our decisions. After creating an updated House of Quality, the Two-Slab design was removed, the Telescoping design remains viable, and the Roll-up design emerged the victor in spite of its difficulty to design and build. With a single design chosen to develop, the team has chosen to focus a majority of our efforts on detailing the Roll-up Ramp Design. An updated screenshot is attached.
A ramp door makes the most sense for a bus. the only problem is they wont work in narrow parkings for bus stops.
Assuming a normal height of 10 ft for the bus, a ramp door will occupy atleast 7 feet of horizontal space. This is too much if you want to stand at a bus stop. Rather than converting the entire door into a ramp, I propose half of the door opens into a ramp and the top half just moves upwards.
Another challenge is how to solve ingress and outgress at the same time, cause now you have a single door.
Sol 1. Open doors on both sides of the bus , one for ingress and one for outgress. This wont work in natural bus stops which are on one side of the road though.
Sol 2. Just have a pole inside the bus :)
A simple idea would be to include a drop-off point on the app. That way, Olli can automatically compute the best route to get to everyone's location on the same route. Imagine that there was point A, B, and C. A is on the left side of the X axis, B is in the middle, and C is on the right. Olli could make it so that they travel along the correct route to make the fastest time to get to all stations. If people are also going on a random journey, they can press a button inside the bus to get off on the street. People can also activate a button on their phone to tell Olli that they want to get on. To open the doors, there should be a button on the side for wheelchair access and emergency opening, but the doors should just push out like a normal bus.
A sliding door from ceiling to floor that slides up into the ceiling. Counterweights used to assist motor safety , clear plastic used for door . Poto eyes used to stop door for safety
Team RR has been making final design changes since the last post. Many mechanical components have been changed and moved around in order to maximize space and efficiency. A screenshot of the team's current CAD model is shown below. The team has decided to lower and raise the floor drop section using two hydraulic actuators, one on each side of the ramp. These actuators will push a pivot arm that will control the position of the floor drop section of the ramp. The slide out segment of the ramp will be driven by a motor and chain that will be guided by the middle support. Lastly, the slide out segment will be rolled out by a roller arm that is attached underneath the two outer support bars. Any feedback on the team's design is welcomed.