Carriage HY-4 / HY-7

The carriage for long-distance cableways.

Set up and function

The HY-4 carriage is used principally as a long-distance cable crane in the forestry and construction industries. It has four distinguishing guide pulleys to conserve the skyline and for gentler transit over the supports. The load pendulum is available with or without a large-dimensioned mainline clamp. In both versions the load hook is incorporated into the pendulum and the mainline is relieved of the weight during the run, so that the mainline will not be damaged, even by the heaviest impacts of long timber loads during rapid descents. The suspended load is also protected against the cable twisting, so that damage to the steel wire cable is also prevented. Like the HY-2 type, the HY-4 carriage is also equipped with the Wyssen FSI carriage control system. It is operated using specially programmed buttons on the radio, as are all of our carriages. It can, however, be switched over at any time to the conventional timer switch, so that the system can be operated without remote radio control. In addition to the standard version, the HY-4 carriage can be fitted with various options, such as a motorised slackpuller, a trailer carriage with bar or a mainline clamp. The HY-7 carriage is technically identical to the HY-4 carriage and is mostly used in the construction industry. The difference is that the HY-7 is significantly larger and stronger and is designed for load capacities of up to 7 tonnes.

Carriage HY-4 / HY-7

Advantages

Laufwagen HY-4

Load hooks for HY-4

1) normal hoisting hook

  • cables up to ø 12 mm
  • 18 kg

2a) normal choker spindle

  • cables up to ø 12 mm
  • 10 kg
normale_chockerspindel_2a

2b) Alu choker spindle

  • cables up to ø 12 mm
  • 5 kg
chokerspindel_alu_2b

3) large hoisting hook

  • cables up to ø 16 mm
  • 35 kg

Technical data

Specifications HY-4 HY-7
Length 1’270 mm 1’560 mm
Width 280 mm 390 mm
Height 900 mm 1’116 mm
Hydraulics 100 bar
Skyline-ø 16 – 36 mm up to max. 45 mm
Mainline-ø 9 – 16 mm up to max. 20 mm
Unladen weight approx. 350 kg approx. 630 kg (depending on model)
Load capacity 4’000 kg 7’000 kg

Advantages of the remote radio control

Options for HY-4 carriages

In addition to the standard version, the HY-4 carriage can be fitted with various options, including mainline clamp, motorised slackpuller, or a trailer carriage with transport bar. The options motorised slackpuller and trailer carriage with transport bar can be quickly coupled and uncoupled. The motorised slackpuller spools out the mainline, so that even for flat and very long cableways the hook can be lowered without an additional weight. The work of the attaching operator is thus made considerably easier. The mainline between the carriage and the winch is always under tension so that perfect winding onto the cable drum is ensured. The motor and spooling out are also operated by the buttons on the radio. If the motorised slackpuller is not required, such as e.g. for steep cableways (gravitational operation), it can be quickly and easily uncoupled and normal operation resumed with the carriage alone. The trailer carriage with transport bar is used mainly in the construction industry for lifting, transporting, lowering and moving of long and heavy parts such as e.g. pressure pipe and gas pipelines, or also for transporting concrete and gravel. The transport bar also prevents the load twisting and twisting of the mainline is also not possible even if the lowered load is left hanging for some time. The retracted load is locked in both the carriage and in the trailer carriage, so that the load is doubly protected against falling during the run.

HY-4Z Mainline Clamp

The mainline clamp in the pendulum allowed repeated movements for loads lowered at any height. It is operated with the portable radio equipment and can be used with both the motorised slackpuller and the trailer carriage with transport bar. The especially large mainline clamps in the load pendulum reduce wear on the mainline and in addition the load hook is locked in the pendulum when the hook is completely retracted. Thus the mainline will not be damaged, even by the heaviest impacts of long timber loads during rapid descents.

Advantages

Laufwagen mit Nachlaufwagen und Transportbalken
HY-4 Specifications with mainline clamp Description
Length 1’270 mm
Width 280 mm
Height 1'010 mm
Hydraulics 100 bar
Skyline-ø 16 – 36 mm
Mainline-ø 9 – 16 mm
Unladen weight approx. 428 kg
Load capacity 4’000 kg

HY-4M Motorised Slackpuller

Advantages

HY-4M Specifications with motorised Slackpuller Description
Length 2’680 mm
Width 535 mm
Height of pendulum normally 900 mm
Height of pendulum mainline clamp 1'010 mm
Hydraulics 100 bar
Skyline-ø 16 – 36 mm
Mainline-ø 9 – 16 mm
Unladen weight approx. 428 kg
Load capacity 4’000 kg

Trailer Carriage

The transport bar is available in two different lengths, 2.5 m and 3.5 m.

hy4_nachlaufwagen1

Advantages

FSI control sytem

The Wyssen’s own developed FSI control system is integrated in the HY-4 / HY-7 carriage. The control system is also mounted in the HY-2 carriage.

Advantages