Wacker Neuson EHB 10 series Manual del operador descargar pdf (Pagina 22)

Description EHB 11

5 Description

5.1 Application

Use the machine only as intended, see chapter Safety, Proper use.

A wide selection of easily interchangeable tools is available for drilling holes from

12 to 125 mm suitable for breaking, chiseling, digging, puddling, hammering,

ramming and deburring. The machine is suited for processing natural as well as

synthetic stone and asphalt and any type of masonry and concrete.

5.2 Functionality

Principle

The machine is a demolition hammer with a pneumatic percussion system as

well as an additional drilling function.

It is driven by a maintenance-free three-phase AC motor.

A frequency converter converts the generated DC voltage to required three-

phase AC current.

"Chiseling" operating mode

The rotary movement of the three-phase AC motor is converted into a stroke

movement via a transmission and a crank gear while in "Chiseling" operating

mode.

The piston is moved forwards and backwards by the crank gear, this compresses

the air (forward movement) or generates a partial vacuum (backward move-

ment). Due to change in pressure the percussion piston is moved forward and

backwards (air cushion percussion system) and hits the tool.

While in "Chiseling" operating mode, the drill drive is uncoupled via the safety

clutch and the tool holder bushing is fixed in place to prevent turning in the tool

holder.

"Hammer drilling" operating mode

While in "Hammer drilling" operating mode, the rotational movement of the motor

is transferred to the drive shaft of the drill drive via a clutch. The drive shaft uses

gear wheels to turn the tool holder bushing in the tool holder.

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Wacker Neuson EHB 10 series Manual del operador Pagina 22