The DP20-4H is a versatile, hydraulically powered four drum puller designed for medium distribution stringing. It can be used as a pilot line winder for heavier distribution. Power is transmitted from the engine to the reels through a common hydraulic drive train. A diamond lead screw levelwind accommodating one reel at a time, aids in the even wrap during pulling. Each reel is equipped with a mechanical clutch to allow selective reel rotation and a mechanical brake to retard overspin. The maximum desired linepull can be preset prior to pulling so that the reel drive will stall if a restriction to the line occurs avoiding damage to the conductor, towers and hardware.
The central operator’s console allows the operator to completely control the pulling operation with optimum visibility of the pulling rope. Operator controls include linepull, linespeed, holding brake and engine controls.
Specifications
| Maximum continuous linepull | 907 daN (2,000 lbs) |
| Maximum linespeed | 4.8 km/h (3 mph) |
| Reel diameter | 787 mm (31”) |
| Reel width | 826 mm (32 1/2”) |
| Reel core diameter | 324 mm (12 3/4”) |
| Reel capacity, synthetic rope | 1829 m of 12 mm (6,000 ft. of 1/2”) |
| Engine | 20 kW (27 hp) |
| Axle | 3175 kg (7,000 lbs) |
| Weight (Approx.) | 2630 kg (5800 lbs) |
| Length (Approx.) | 4266 mm (168”) |
| Width (Approx.) | 2438 mm (96”) |
| Height (Approx.) | 930 mm (76”) |
Standard Equipment
Fully hydraulic drive system
Infinitely variable speed and linepull control
Automatic overpull protection system
Spring applied / hydraulic release drive brake
Single axle trailer mounted with electric trailer brakes and highway lighting package
One front and two rear jacks
Automatic diamond screw levelwind
Free wheeling disconnect from each drum
Bronze disc overspin brake on each drum
Operator’s seat and protective screen
Options
Water-cooled diesel
Hydraulic front jack & rear jacks
Lockable console cover