My coal mine scale 1:22.5

[Design-HSB]

Meanwhile, I've tinkered and a further bridge crane has emerged.

So I can then raise the bucket from the well and place on a wagon for emptying.


Bridge crane with bucket

Now it is time to construct the drive, because of course this model will be shown also in function.

[Ray Dunakin]

That sure turned out nice!

[Ken Hamilton]

It sure did.

[Design-HSB]

You will not believe it but the time frame was really so.


Shaft II in the workover.

First attempt was actually originally the bucket of the transport of concrete had been used to raise the hoist.

Unfortunately, the chain was far too weak and also a tripod was set up.
With the reel from the brake mountain then managed to pull the bucket up.
Only you got the bucket is not empty then over the car.
Why then my suggestion that I have implemented the model with the trolley and hoist.
I can also implement the function in the model and make.

Only would the reel for the ropeway are far outside of my diorama and the drive ropes for the crane will simply disappear in the nothing I can find not so good.

Therefore I have considered the need for workover simply obeying an additional reel use of which are in the real mine also still more available.

As you can see, it goes with me and not from without compromise and imagination.

Moreover, the real monastery tunnels so often been converted and changed what I've sometimes been difficult to assign all of the appropriate age.

I had just started with little time to plan and build the photo above was my submission.

But I quickly copied some.

The crane is operated with 3 ropes, 2 pieces for front and back of the trolley and one for raising and lowering the load.

I have to build the frame 2 and 5 along transverse grooves milled in an MDF plate, and this also the same as used Lötlehre.


Drilling and Solderframe for crane frame.
The standpipes have 2 mm diameter and 1 mm cross braces.


Roles, hook and bearing block for crane.
In the 8 mm wheels I have 4 mm ball bearing with 2 mm thickness pressed one.
The hook is almost identical to the other and just cut from a 3 mm plate milled and then trimmed.
I have the bracket with the circular saw from a 10 mm square-worked brass rod, and then drilled on the milling machine.


Rollers in the bearing bracket with the three ropes.


Trolley with running and supporting role of 3 x 1 mm ball bearings.
Chop with the sheave.


Trolley and crane hooks.
The hook itself is endlessly rotatable.
Thread M1 and M1,4, thickness 0.5 mm cable.

Meanwhile, I was able to test the function temporarily by hand and found that all the cables run properly.

[Ray Dunakin]

Very impressive miniature engineering!

[finescalerr]

Satisfactory. -- Russ

[Design-HSB]

So me no one in the shaft II falls into it and I have no problems with the competent department of the model for mining office get, I've begun to build a railing around the opening to the shaft.


From one side milled flat plate.
As with the other rails, I've milled the grid of a plate.


The finished machined and brazed railing.
The door and a brace missing see photo model.

[Design-HSB]

Since I've ordered once new drills and cutters, I have the waiting time to build a door for the demarcation of the entry in slot II


The parts for the door.


The assembly took place in the welding and teaching deck.


The finished door is examined here and shown forth.

[Design-HSB]

Thereby having, I also have made ​​the hinges to the door.

Here I drew in part on a Frithjof technology.

However, to see something different, as shown on the following image.
I immediately made ​​a hinge with two eyes.


Door hinges.
I've also attached a hole in the tape and at the door.
This allows much easier to position the hinges and dowels through the wire as the connection is even tighter.


Shaft II with door shut, of course, to open.

Next I want to build down the ladder.

[Ray Dunakin]

The fence and gate turned out very well!

[Design-HSB]

Hi Ray,

thanks for the recognition.

I've now built ladders.


The ladder to descend into the shaft II


Since I have worked so well built yet another equally needed ladder.


Head in soldering tool, unfortunately, the photo is not so successful.

The rungs are made of 1 mm and the wire bars of 1.5 mm tube.

The lesson could be so also to produce a circular saw with adjustable cutting depth.

[finescalerr]

No casual observer ever will realize or appreciate how much skill and thought and planning and hard work went into the details. Most satisfactory. (That ladder is just PERFECT, as are some other details.) -- Russ

[Design-HSB]

So now I want yet to even show a better picture of the ladder.


Head after soldering into Mastertool.

But there is a further and I started to manufacture the pulleys for the tripod.


Pulley 1 half back.


One half of the front pulley.


Front and rear pulley.

The editing was done by both sides and I had to hold and align drilled 0.5 mm holes at the corners.
With an adhesive film layer additionally everything was kept.

The two halves are soldered together now and into the middle of a ball bearing is a pressed yet.

When I built all the mechanical parts, of course, still lacks the color, the weathering.

[finescalerr]

Machining the pulley is beyond my pay grade. But the photo showing how you aligned the ladder parts for soldering is worth a thousand words. Thank you! -- Russ

[Design-HSB]

So it goes now I am working on with the tripod.

This frame is used for lifting loads.


Tripod head joint.


Three leg kicks and foot.


Small parts of the tripod.