[TC22] Concrete Pump

[Philtech]

I decided to build a concrete pump for the first contest I enter. I see such vehicles regularly on construction sites, so I think this vehicle should be ok for the contest.

It will be inspired by the model of the Liebherr 42 XXT:

This is my progress so far:

Thanks for reading and any comment is much appreciated!

[GerritvdG]

Nice to see such a long model, this proves how much is possible within 10000 sq studs!

Good luck, seems like a long steering linkage also 

[Philtech]

Yes , I was wondering about how long the model can be but it should end up coming out at about 9900 studs³.

I used a 15 l liftarm as the steering linkage:

Edited April 12, 2022 by Philtech

[Thirdwigg]

Very cool idea. I was wondering if anyone would do some sort of construction truck. I look forward to the result. 

[Jurss]

Interesting solution for steering. Is that whole long beam turning?

[Philtech]

12 hours ago, Thirdwigg said:

Very cool idea. I was wondering if anyone would do some sort of construction truck. I look forward to the result. 

Fewer people enter the contest with a truck like that than I would have thought.

3 hours ago, Jurss said:

Interesting solution for steering. Is that whole long beam turning?

Yes, the whole long beam is turning.  This makes the steering quite hard to turn with a simple axle, but with a gear on the axle it works fine.

[Philtech]

The driver's cab is now finished:

I will add some details later.

The next step will be to build a prototype of the outriggers to estimate how much space they will need and then build the boom in the middle of the outriggers.

Edited April 28, 2022 by Philtech
Typo

[Philtech]

Here is my progress so far:

I changed the steering mechanism because the old one was a little hard to turn and the axle was too far from the cab. With the new mechanism I moved it further forward and added a steering knob to the top of the cab.

Furthermore, I built the boom. This one is fully operated with pneumatic functions (except turning) and can fold in four times, but I haven't laid the pneumatic hoses and placed the pneumatic switches yet, so I don't know if I can put all that somewhere.

(Sorry for the blurry picture.)

For the last folding out, this small cylinder is actually a bit too weak, so it only just folds out under high pressure, but unfortunately no other cylinder fits in this place.

I also built outriggers, but not all complete yet. The front ones will be able to extend, the rear ones won't, as it is the case with the Liebherr 42 XXT model.

I'm still thinking about whether I should replace the linear actuators with a pneumatic cylinder, where I have pneumatics in the model anyway I thought that might fit and be more stable. I had thought of these:

or

Since I do not have the cylinders that are suitable for this at all, I'm thinking if it would be worthwhile to buy them.

Any comments/thoughts/etc are much appreciated and thanks for reading.

[GerritvdG]

Nice update, are you planning to use a color scheme like the picture of the Liebherr 42 XXT you posted?

 

2 hours ago, Philtech said:

'm still thinking about whether I should replace the linear actuators with a pneumatic cylinder

I think the LA's are fine, very easy to operate on the outriggers.

[LEGO Train 12 Volts]

Very cool ...the fully extended arm is impressive! 

[jorgeopesi]

Wow huge tiny truck, I like all the linkages.

[Thirdwigg]

Great job. That boom has a quite a reach.

Yeah, keep the linear actuators for the outriggers. They fit perfectly. 

[Philtech]

On 4/28/2022 at 9:33 PM, GerritvdG said:

Nice update, are you planning to use a color scheme like the picture of the Liebherr 42 XXT you posted?

I think the LA's are fine, very easy to operate on the outriggers.

I plan to use a similar color scheme. The outtriggers won't be orange, because I don't have enough orange parts. They will be red, like in the pictures above. The orange hose will probably also be red. I will change the cabin color into white or black. I don't know exactly yet.

On 4/28/2022 at 9:37 PM, LEGO Train 12 Volts said:

Very cool ...the fully extended arm is impressive! 

 

On 4/28/2022 at 10:31 PM, jorgeopesi said:

Wow huge tiny truck, I like all the linkages.

 

On 4/29/2022 at 1:26 AM, Thirdwigg said:

Great job. That boom has a quite a reach.

Yeah, keep the linear actuators for the outriggers. They fit perfectly. 

Thanks for all the feedback. Then I will leave it with the LA's for now.

One of the rear outtriggers is also almost finished.

And here are a few pictures with a bounding box. The size of it is: 11 x 18 x 50 studs (WxHxL).

 

The mirrors are retractable, otherwise the model would no longer fit in the box.

 

Any comments/thoughts/etc are much appreciated and thanks for reading.

[Philtech]

The concrete pump is done now!

Features:

2-Axle steering:

Extend and lower outtriggers:

The front outtriggers have a lock function. You can pull the bush upwards to unlock it (see the pictures below).

The rear outtriggers have an automatic snap and stop function, because of the LBG beams in the picture below.

Unfolding the boom in four stages:

Rotatable boom

Openable doors:

Retractable side mirrors:

Openable toolbox:

Detailed cab:

Rear lights:

Thanks for reading (or rather for looking at pictures )!

Edited May 25, 2022 by Philtech

[johnnym]

Wow, that got huge! How many meters of pneumatic tube have you installed? Man, I think I can just stop with my entry, the competition is just too far ahead with everything....

[Philtech]

20 hours ago, johnnym said:

Wow, that got huge! How many meters of pneumatic tube have you installed?

Thanks! I think I installed about 3.5 meters pneumatic tube.

20 hours ago, johnnym said:

Man, I think I can just stop with my entry, the competition is just too far ahead with everything....

That's partly what I thought, too. But now I am reasonably satisfied with my result. I think you should also continue building.

And one more fact about the concrete pump: It is about one meter high in fully unfolded form.

[johnnym]

On 5/24/2022 at 4:51 PM, Philtech said:

Thanks! I think I installed about 3.5 meters pneumatic tube.

I didn't expect more than 2 meters, geez...

On 5/24/2022 at 4:51 PM, Philtech said:

And one more fact about the concrete pump: It is about one meter high in fully unfolded form.

Amazing!

[PassengerJet]

This thing is amazing!

[Philtech]

On 5/25/2022 at 11:52 PM, johnnym said:

I didn't expect more than 2 meters, geez...

Amazing!

17 hours ago, PassengerJet said:

This thing is amazing!

Thanks! Great that you like it.