
| Soil Block Presses (GTZ, 1988, 38 p.) |
Manufacturer
GEOBETON ONE
B.P.91
F-53021 Laval
CEDEX
France
Tel. 43 49 09 48
Tlx. 722 603 f
Description
The PRESS - BLOC 80 TM, first constructed in 1984, succeeded the company's first machine, the H 60 press, developed in 1981.
The machine is a mobile production unit, fixed on a self-carrying chassis equipped with 4 wheels, in accordance with road transport standards. The self-contained unit incorporates a vibrating sieve, a horizontal shaft mixer, a hopper and a hydraulic press, all powered by a single 47 hp diesel engine, which has a 301 tank and diesel consumption of 5 l/h
The press is designed to produce blocks of 29 x 14 x 9 cm with a tolerance of ± 3 mm for the height (at maximum compression) and a very smooth surface, achieved by hypercompression reaching a working pressure of 20 N/mm². The blocks can be made solid or with recesses (by inserting frogs). Different sized blocks can be made to suit local requirements by changing the mould (within 1 hour). The height of the blocks is adjustable between 5 and 10 cm.
The PRESS - BLOC 80 TM is conceived for use in harsh tropical conditions, and has a large in built safety factor in all hydraulic jacks, pumps flexible pipes and mechanical items. Resisting parts are manufactured in special steel and are replaceable.
Operating the PRESS -BLOC 80 TM
The production of soil blocks comprises both manual and automatic operations and is carried out in two stages, which function independently of each other.
The vibrating screen is fed manually by a crew with shovels or a front-end loading tractor The screen vibrates automatically, separating stones and foreign debris from the earth, which drops into a hopper and through an automatically controlled funnel loader into the mixer.
The addition of a stabilizer (if required) and water is done manually, directly in the mixer. After thorough blending, the mixer is lifted up automatically by the two lateral pivoting shafts. At the topmost position, the mixer opens automatically, dropping the soil mix into the 2001 fixed hopper. This concludes the first production phase.
The automatic filling, hydraulic compression and fuming out cycle is controlled independently of the other operations by an electronic and pre-programmed computerized device, which incorporates a release mechanism. The compression speed of the vertical stroke hydraulic jack is 75 mm/s during precompression and 10.8 mm/s during hypercompression. the compression pressure is adjustable.
A worker, standing on the base frame, removes the blocks as they are ejected from the press, at intervals of approximately 8 seconds.

FIGURE
|
Technical Details |
|
|
Size of machine (length x width x height) |
462 x 222 x 295 cm(182 x 88 x 116 in) |
|
Weight of machine (without mould) |
3500 kg |
|
Shipment of machine |
in standard container (details according to shipping company) |
|
Weight of packed machine |
3800 kg |
| | |
|
Standard block size (single mould) |
29 x 14 x 9 cm (11.4 x 5.5x 3.5 in) |
|
Maximum nominal compaction force |
80 tonnes |
|
Nominal compaction pressure |
20 N/mm² (2900 p.s.i.) |
|
Compression ratio |
2:1 |
|
Energy input/transmission |
motorized / hydraulic |
|
No. of blocks per cycle/output rate |
1 / 320 blocks per hour |
|
Labour force required (incl. excavation and mixing) |
6 - 8 men |
|
Price (ex works) |
PRESS - BLOC 80 TM |
525000 FF (approx. 90200 US$) |
|
valid June 1988 |
Kit for mould substitution |
on request |
| |
Spare parts package |
included in the price of the machine |
|
FF= | | |
|
French Francs |
| |