[TC23] Great Ball Contraption Contest - Entry Topic

**Jim** · August 15, 2022

TECHNIC GREAT BALL CONTRAPTION CONTEST - ENTRY TOPIC

CONTEST INFORMATION

More information about the contest can be found in the general discussion topic.

WHAT DO I NEED TO ENTER?

Please take a careful look at the rules before posting in this topic. Each participant is obliged to create a post in this entry topic. Posts need to follow the rules stated below. Posts not following the rules will be disqualified so please read them carefully.

ENTRY POST

The entry post in this topic needs to contain:

Entry name
Short summary of the functions.
One or more images (max 4). You can have combined pictures (4 in 1) as long as the picture isn't bigger than 1024x1024.
Embedded Youtube video (mandatory)
Link to the discussion topic

IMPORTANT

This topic should be used for entries only, so commenting is prohibited. Please use the general discussion topic for...well, general discussion on the contest, and individual discussion topics to comment on the individual entries.

Edited November 13, 2022 by Milan
Opened the topic.

Berthil · November 13, 2022

Ferris Wheel GBC

App. 1 meter diameter Ferris wheel held together by 128 x127c41 41L strings with 63 ball pods. Detachable planetary geared straight line mechanism ball feed. Ball feed has 'on the fly' timing adjustment through a differential.

higgins91 · November 13, 2022

Wheels

TC23-Wheels by alex peraux, sur Flickr

Wheels consists of 4 successive synchronized wheels which transport the balls to the next module!

Edited November 21, 2022 by higgins91
add pictures

Akassin · November 13, 2022

Serpentine

The mechanism pushes the balls up in a zigzag path.
One L-motor is used

doug72 · November 13, 2022

[TC23] GBC Train Vertical Ball lift Loader with EV3 Mindstorms Control

Discussion Topic.

https://www.eurobricks.com/forum/index.php?/forums/topic/192030-tc23-gbc-train-vertical-ball-lift-wip-ev3-version/

General View:-

IMG_8929

Overhead View:-
IMG_0308

I decided to use a EV3 Mindstorms to power & control the ball lift and train car movements.

After working out how many turns were required to raise & lower the lift through its complete cycle the EV3 medium drive motor was set to 56 revolutions to drive the two 56T turntables. When the lift is at full height @ 12,o-clock position the Lift EV3 motor stops. and the train cart departs.

Self unloading Train cart :-
The original GBC train car hopper was removed and a bespoke ball hopper with a lifting ball gate was installed..

IMG_8894

IMG_8895

Once balls have been loaded it is restarted by a medium EV3 motor running the train reverser with 2 striker arms for 1 revolution.
The Train cart proceeds back along back the track to the out box where the balls are discharge either into a collection box or into the in box of another GBC module.

Once balls are unloaded the train reverser (2) re-starts the train car to travel back to the ball lift where it it activates the EV3 Touch Sensor again.
At the same time the trip beam on the Train car is pushed over by the the Yellow quadrant, just enough to stop the motor.

Another lift cycle then starts.

Ball rate is 30 balls per trip and easily meets the requirement of 1 ball per sec. The Final build with three train track sections can transfer two 30 ball batches in 53 seconds.

The module has proved to be very successful & reliable.

Video link:- https://youtu.be/OqLku5LJnE0

Edited November 14, 2022 by doug72
Added embeded image

Philtech · November 14, 2022

GBC Factory

The balls are placed in small boxes in groups of two. They reach the required height via a conveyor belt. There the balls are dumped and the boxes come back to the starting point via a slide and a conveyor belt. Since the GBC would otherwise be too slow, there is a detour for every third ball with a long rolling path and a conveyor belt at the end.

It is mostly built with parts from the 42055 Bucket Whell Excavator (only the 8 tooth gear not).