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1.2 Description and intended use of the machine.
The machine described in this manual is a self-propelled Elevating Work Platform or, as described by the
EN280 technical standard, a mobile machine designed to move people to work positions, in which they
perform tasks while remaining on the work platform, with the understanding that persons enter and exit
the work platform only through access positions at ground or chassis level, and which consists of at least
a work platform with controls, an extendable structure (lift arms) and a frame.
The planned activities are:
- Green maintenance;
- Maintenance and installation of systems or devices at height;
- Cleaning;
- Stripping, sandblasting, painting, welding;
- All the activities to be carried out at height with the operator on the platform;
The maximum capacity allowed (different for each model; refer to the technical data in the tables later
in this manual) consists of:
- For each person a load of 80 kg is considered;
- For the equipment, a minimum load of 40 kg is considered;
- The remaining load is represented by the material being processed.
The machine essentially consists of:
- A motorized base undercarriage, with variable track (excluding “RT” models with fixed track),
equipped with tracks.
- Hydraulically rotating turret;
- Extensible structure operated by hydraulic cylinders;
- Operator platform.
The base tank supports the power source (heat engine or battery) and is mainly composed of the following
components:
- Fixed lower frame on which the oil and fuel tanks are installed (if the machine is equipped
with a heat engine), the battery, the hydraulic and electrical systems and the ground
emergency control station;
- Left track equipped with gearmotor for moving the machine, and telescopic supports for
controlling the variable track (excluding “RT” models with fixed track);
- Left track equipped with gearmotor for moving the machine, and telescopic supports for
controlling the variable track (excluding “RT” models with fixed track);
- Articulated fifth wheel support is operated by a pair of hydraulic cylinders for the levelling
control of the superstructure, on which the rotation fifth wheel is fixed.
The hydraulically rotating turret is fixed to the articulated support of the carriage and allows rotation of
the superstructure with respect to the vertical axis of the machine. The allowed rotation is limited, and
this limitation varies from model to model (see the technical data table to understand the maximum
rotation angle of each model).
The extensible structure consists of
o Telescopic main arm;
o Jib
The lifting / lowering movements of the arm and the jib are carried out by means of hydraulic cylinders
equipped with over-centre valves directly flanged on them in order to keep the arms in position even in
the event of accidental breakage of a supply pipe.
The telescopic extension is operated by:
- A double-acting hydraulic cylinder with over-centre valve and a flyer chain system for the JIBBI
1250, JIBBI 1270 and JIBBI 1670 models;
- A double-acting and double-extension hydraulic cylinder (without chains) for the JIBBI U 1570
model.
Appropriate sensors monitor the position of the platform at a height, verifying that the operator always
remains within the expected safety operating limits (height, outreach).
The work platform is fixed to the end of the jib arm and can be rotated differently for each model (see
the technical data table to understand the maximum rotation angle of each model) by means of a rotary
actuator also provided of the over-centre valve to keep it in position in case of hydraulic failure. The
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