Dreggen hose handling cranes

Our hose handling cranes are equpped with a two-speed winch, with hoisting speed 10 m/min at full load and 20 m/min at no load. Regardless which speed is being used, there will not be any impact on the power consumption. All up and down luffing time indications are average. The data on the below chart is based on 440V/60Hz and a dynamic factor of 1,15. Based on a heel and trim at a total of 5,4 degrees.

Main data
SWL	10,0 T
MAX OUTREACH, horizontal jib	20,0 M
MIN OUTREACH	3,6 M
HOOK SPEED M/MIN, full load HOOK SPEED M/MIN, light load	0 - 10 0 - 20	M/MIN M/MIN
HEIGHT OF LIFT	40	M
SLEWING SECTOR CONTINUOUSLY	360	DEGR
SLEWING SPEED	0,7	RPM
HEEL / TRIM	5/2	DEGR
LUFFING TIME, average up/down	90	SEC
WEIGHT OF CRANE (approx)	15,5	TON
POWER CONSUMPTION, motor rating	S6 - 25%	50 kW
MAIN ELECTRIC SUPPLY	440V-60HZ-3PH

NOTE! Speeds, weight and power consumption are approximate within +/- 5%

CRANE CONTROL

The crane is controlled from and open platform above the slewing ring. Entrance to the platform is by ladder. The speeds are controlled step less from 0 to max. Two motions can be operated at the same time with full capacity, but then the speed will be reduced.

LOAD LIMITING SYSTEM

Each hydraulic circuit is provided with equipment for limiting hydraulic pressure to preset values corresponding with crane capacity.

LIMIT SWITCHES

Hook travel up

The hose handling crane is provided with an automatic hook stop in top and bottom position.

Luffing up - down

The luffing cylinder is designed for safe buffering in extreme positions.

Slewing limit

Slewing limit switches are not included.

EL HYDRAULIC POWER PACK

- The crane is provided with a built in power pack.
- The electric pump motor is located in centre of the pedestal with output shaft pointing upwards and driving the hydraulic pump through a flexible coupling.
- The slewing column steel structure is utilized as tank for the hydraulic oil.
- The hydraulic oil circuit has a full flow return filter with changeable filter inserts.
- The tank is provided with an oil level indicator and a temperature gauge.

ELECTRIC PUMP MOTOR

The electric pump motor is of squirrel cage type, fan cooled and certified for use in hazardous area, type of enclosure EExd IIBT4, IP55, isolation class B and provided with an anti condensation heater for 220V. Duty: S6-25%ED

ELECTRIC STARTER

A star-delta starter for location in safe area will be supplied as a loose item.
The starter will be included as standard, hour meter, ampere meter, light for motor running and power available indication, and start/stop buttons in the front door. In addition there is a start/stop push button on the crane pedestal.

SLEWING MACHINERY

The crane is provided with a slewing ring designed for marine applications. The gearing is internal. The slewing gear is of the planetary type with multi disk brake. Adjustment of the backlash between pinion and gearing on slewing ring is possible; the slewing motor is of the axial piston type.

HOISTING MACHINERY

The winch unit consists of:
- Drum with bearing and brackets
- Winch gear with hydraulic operated fail-safe brake
- Hydraulic motor with safety valve to «freeze movement in case of pressure drop»

The drum is designed for a capacity to take the wire rope on max 3 layers and the wire rope is of the non-rotating galvanized type. The minimum safety factor is 5.

Wire sheaves used on the crane are provided with heavy-duty roller bearings on stainless axles. All bearings have grease nipple lubrication.

JIB CYLINDER

The jib cylinders are designed for marine use and have maintenance free composite bearings on stainless steel axles. The piston rod is chrome plated to prevent rust attack.

SAFETY FEATURE

In case of power failure, the hoisting machinery is designed with equipment for emergency lowering of load, and the jib cylinders load control valves are designed for emergency lowering of the jib.

HYDRAULIC PIPES AND HOSES

Hydraulic pipes are of the stainless steel type with chromated fittings. The hoses are selected to give a safety factor against rupture of minimum 4.

STEEL STRUCTURE

The steel quality is selected in accordance with the classification societies’ recommendation to obtain necessary ductility for the lower temperature design limit. All important welds are carried out in accordance with welding procedures. After welding, a certain amount of NDT control is carried out.

SURFACE TREATMENT

EXTERIOR

Abrasive blast clean of all structure to SA 2,5.

One coat of two-pack zinc rich epoxy primer. Dry film thickness approx 30 - 40 microns.
One intermediate coat, type two pack mastic mio epoxy. Dry film thickness approx 125 microns.

All types of paint can be applied, both one- and two pack qualities.
Top coat can be delivered upon request.

INTERIOR CRANE HOUSE (HYDRAULIC OIL TANK)

Abrasive blast clean of all surfaces to SA 2,5

INTERIOR PEDESTAL