| HYDRODEMOLITION - EHD |
■ It is used on concrete rehabilitation works to remove poor quality concrete and replace one of better quality on structures, bridges, pavements, etc... ■ The use of the water pressure is more advantageous than the noisy pneumatic hammers, not damaging the steel rods of the reinforced concrete. ■ Security of the worker, because it is away from the work zone. ■ Great productivity due to the revolving movement of the nozzle and its displacement on automatic swing to wide work, up to 2 meters. ■ Possibility of assembly on different vehicle types. ■ 2 types of different motorizations are offered. Pneumatic or hydraulic. |
Specifications | ||
| Rotation speed | 120-600 rpm | ||
| Max. Pressure | 1380 bar | ||
| Max. Flow | 380 l/m | ||
| Air supply | 280 l/m a 6 bar | ||
| Hydraulics | 38 l/m a 100 bar | ||
| Stroke | 5-18 cm/sec | ||
| Weight | 113 Kg |
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DESCRIPTION ■ The device consists of a chassis where rotating heads slide sideways in transversal movement. It must be mounted on a tractor type vehicle so that the water can be jetted in a length wise direction removing concrete from the desired surface. ■ The equipment can be provided in pneumatic or in an hydraulic version. A gear box motor turns the head. It's possible to change the rotation speed by adjusting the air/oil flow of the motor. We recommended a rotation speed between 120 to 600 rpm according to the concrete hardness. It jets out at an angle of 15° and rotates in 75 mm circles approximately. ■ So that it removes concrete at different depths it's necessary that the water is fired several times on the same zone. The sets of rotating heads are mounted on a plate with wheels ensuring overlapping surface cleaning. The wheels go between 2 bars allowing a swinging movement by means of a pneumatic or hydraulic gearbox, sprocket and chain mechanisms. ■ The chain is joined to the back part of the plate. Although the motor turns one way a sliding mechanism causes the rotating head to move automatically alternating from one side to the other. This sliding movement or hub can be modified from (0,6 m to 1,8 m) by changing the position of the driving sprocket before starting. The sliding movement can be from 2 to 15 cycles a minute depending on your needs. ■ Efficiency will depend on concrete hardness but performance can start from 0.5 to 1.5 m3/h with 170 l/min at 1.400 bar pressure. |
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