Current Jacking and Skating Equipment Base
|
Qty |
Description |
SWL (T) |
| 4 | Weigh Scales = +-1%acc | 200 |
|
2 |
Lifting System |
200 |
|
3 |
Diesel Hydraulic unit |
3000Psi |
|
1 |
Electric Hydraulic unit |
3000Psi |
|
12 |
Hydraulic Jack |
50 |
|
4 |
Hydraulic tandem jack |
100 |
|
8 |
Hydraulic Jack |
30 |
|
4 |
Hydraulic Jack |
10 |
|
4 |
Skate |
100 |
| 4 | Skate | 60 |
|
4 |
Skate |
40 |
|
1 |
Railing system 50m |
400 |
|
1 |
Railing system 12m |
20 |
| 20 | Base plate 2.4 x 3.0 x 0.02 | 50 |
| 16 | Stands 1.0m high | 50 |
Rex J. Andrews uses Jacking and Skating Equipment for the loading and unloading of trucks as well as the skating of heavy items. The lifting system shown is 4.3m high minimum
The following figures show a typical setup for the skating equipment. The turbine is being skated off a platform trailer onto a plinth (foundation) in line with the existing generator.
The figure shows the movement of the turbine off the trailer and onto the plinth. The skating equipment used by Rex J. Andrews is innovative, as it does not need to pull the turbine from an anchored position. Instead it pulls the turbine along its track using a hydro/mechanical rig. The track is made up of fabricated lengths of UC pairs with welded low profile tracks on top. The bogies are shown in the figure below.
The maximum height between the Top of the skate and the bottom of the support beam is 585mm. This dimension can be reduced by using smaller beams that consist of a 40mm plate only. The overall height is then reduced to 335mm
|
Pressure (MPa) |
||||
|
Load (T) |
Load (N) |
Timber Area 250x500 125000mm^2 |
30T Jack Area 80x80x3.14 20106mm^2 |
50T Jack Area 125x125x3.14 49087mm^2 |
|
5 |
49000 |
0.392 |
2.43 |
1.00 |
|
10 |
98000 |
0.784 |
4.87 |
2.00 |
|
20 |
196000 |
1.568 |
9.74 |
4.00 |
|
30 |
294000 |
2.352 |
14.61 |
6.00 |
|
40 |
392000 |
3.136 |
N/A |
8.00 |
|
50 |
490000 |
3.920 |
N/A |
10.00 |
|
60 |
588000 |
4.704 |
N/A |
N/A |
Table 1. Guide for Calculating maximum ground pressure
