Cable Crane

Cable Crane

 

(cableway crane), a structure used to raise and lower loads and to transport loads horizontally over distances of 100-1, 500 m. Such cranes are used in open mine workings (strip pit rock, ore, block rubble, and so on) and at construction sites (earth or concrete).

A cable crane installation consists of two supports with a supporting cable stretched between them. A carriage equipped with a block-and-pulley hoist and a suspended scoop or car that can be raised or lowered moves along the cable on rollers. The carriage is driven by a traction cable, which passes through guide pulleys on the supports to the driving (traction) pulleys of a winch. The block hoist and the load are raised and lowered by the winch through a hoist cable. The supports are of the tower type. The tower containing the drive equipment and operating gear is the machine tower; the opposite tower is the support tower. The supports may be stationary or mobile. If stationary towers are used, additional transportation within the quarry (ditch) becomes necessary. Mobile towers usually move along rails, in parallel if both towers are mobile or radially if only one tower can move. The height of supports is up to 50 m. To increase the output of the installation, cable cranes may be equipped with two scoops, each of a capacity of up to 10 cu m.

Cable cranes have a load capacity of 5-50 tons, a span of 100-1, 500 m, and a hoisting height of 50 m or more. For large spans the speed of movement of the carriage on the supporting cable is up to 8-10 m/sec, the speed of lowering is 1.3-1.5 m/sec, the speed of movement of the supports is 1.3-1.5 m/sec, the number of cycles per hour is up to 25-30, and the power consumption is 7-9 kilowatt-hours per ton-km.

M. V. VASIL’EV

References in periodicals archive ?
Invitation to tender : Detailed task description Wood harvesting with cable crane Tilting mast-SK with 600 m rope (bottom and top side), mountain and Taltransport, excavators processor.
Carrying excavated soil sand lifted by a cable crane
The company's American cable crane had previously helped demolish head houses up to 210 feet in height but a ramp of rubble was needed.
Long gone are the days when the wrecking ball and cable crane dominated the scene.
With 100 feet of lateral movement capability and a remote-controlled arm to adjust the cable crane arm to changing tides and the location of power connections on cruise ships, the AMP Mobile versatility allows for a variety of cruise ship configurations.
4 planned routine repairs of cranes, hoists and shelf stackers - 1 x per year by technological processes, unplanned repairs of cranes, hoists and shelf stackers (hour service equipment and supply of spare parts), repainted cranes, hoists and shelfs rectification of crane runways, (consisting : the operational troubleshooting, removal of fault conditions rack stackers and replacement of damaged parts, the focus and rectification of crane runways, to test the mechanical and electrical parts of lubrication, performance tests, repairs actuators, limit switches, replace bearings, exchange controls seats in cabins crane operators, change system drivers and control cable crane, crane exchange rubber bumpers).
One cable crane, two skid steers and two Komatsu excavators tackled the Cleveland water treatment plant job--one affixed with a LaBounty shear for sizing steel, the other with a grapple for loading material into trucks.
If you want a cable crane you better hurry and get one because they are on the "endangered species" list.
It will be able to take the load of 18 train coaches at one time and project officials are using steel girder plates to install it using cable cranes.
TMJV compensated for the restriction to the right-of-way by bending the pipe outside the four-mile section and using cable cranes on slopes as steep as 32 degrees to move and hold the pipe so it could be strung and welded directly in the trench.
The construction contractor compensated for the restriction to the right-of-way by bending the pipe outside the four-mile section and using ski-lift-like cable cranes on slopes as steep as 52 degrees to move and hold the pipe so it could be strong and welded directly in the trench.