SSB 02.1 DUO FILAMOS concrete spraying machine

The SSB 02 shotcrete machine operates on the principle of a dosing drum (pneumatic conveying) and is designed for spraying ordinary and fire-resistant concrete mixes using both dry and wet methods. It is suitable for medium and large-scale projects. The DUO version is powered by a two-speed electric motor. The machine’s output is determined by the size of the dosing drum.

Electric motor-driven concrete spraying machines are intended exclusively for use in environments where there is no risk of methane explosion. For work in environments where there is a risk of methane explosion, it is essential to use the SSB 14 and SSB 24 COM-A versions with pneumatic motors.

The SSB 02 concrete spraying machine is manufactured in two basic versions, differing in the type of drive and the ability to adjust output. The machine can be mounted on a wheeled chassis or a fixed frame. It is fitted as standard with a central lubrication system ensuring automatic lubrication at all friction points.

Applications

The machine is primarily used for surface reinforcement in civil engineering structures, in the construction of hydraulic structures, for reinforcing tunnel and sewer linings, and in underground construction, as well as for the reconstruction of concrete structures.

Principle of operation

The SSB 02 concrete spraying machine operates on the principle of pneumatic conveyance.

Dry method

The dry mix intended for spraying or transport is poured into the feed hopper and smoothly fills the cylinders of the dosing drum. To facilitate the transport of the mix to the dosing drum, the machine’s feed hopper is fitted with a vibrator. As the drum rotates, the mixture is lifted by 180° towards the upper air duct, through which it is blown out of the individual cylinders of the dosing drum towards the material feed hoses. Air is also supplied to the material hoses, which facilitates the transport of the material. A spray nozzle is fitted at the ends of the hoses; water is supplied to it simultaneously, and this is where the mortar is mixed with water. A water control valve fitted to the spray gun regulates the amount of liquid dispensed.

Wet method

When spraying concrete mix using the so-called wet method, the machine’s feed hopper is filled with a pre-prepared wet mix of the same quality and composition as ready-mix concrete. The mortar is transported through the machine in exactly the same way as in the dry method. The only difference is that, instead of water, a chemical additive that accelerates the setting of the material is fed to the spray nozzle of the gun; this is made possible by an external pump for dosing the chemical.

The machine’s power is adjustable:

• By adjusting the speed using a switch (SSB 02 DUO)
• Via the variator control knob (SSB 02 COM-F).

Advantages:

• Capability of both dry and wet spraying
• Simple operation and maintenance of the machine
• smooth adjustment of output (COM-F model)
• belt drive to protect the drive system from damage in the event of a sudden machine shutdown
• long service life of wear parts (sealing and wear plates) thanks to the use of central lubrication
• robust construction enabling operation in harsh conditions
• operating costs.

Technical specifications:

• Available drums (rotors) with capacities [l]:
  • 13.5 l – small drum
  • 21.9 l – large drum
• Capacity – depends mainly on the drum capacity *) [m³/h]:
  • 13.5 l rotor – capacity 2–10 m³/h
  • 21.9 l rotor – capacity 3–16 m³/h
• Air consumption at a conveying length of 40 m **):
  • 2–10 m³/min – small rotor
  • 3–16 m³/min – large rotor
• Air pressure [MPa]: 0.6
• Electric motor power [kW]: 4.5/6.5
• Mains connection: 3× PEN 400 V
• Supply hose diameter [mm]:
  • DN50, DN60 – small rotor
  • DN60, DN65 – large rotor
• Particle size of feed material:
  • max. 16 mm – small rotor
  • max. 20 mm – large rotor
• Horizontal conveying length [m]:
  • 250 m – dry method
  • 40 m – wet method
• Conveyance height [m]:
  • 100 m – dry method
  • 15 m – wet method
• Length [mm]: 1620
• Width [mm]: 990
• Height [mm]: 1480
• Weight (without equipment) [kg]: 950.

*) These are theoretical values. Actual performance depends on the type and composition of the mixture being conveyed, its moisture content, the conveying distance, the volume and pressure of the compressed air, and the diameter of the supply hoses.

**) Air consumption figures are approximate only and depend on the machine’s current output, the transport distance and the diameter of the supply hoses.