THE "BRUTE FORCE" METHOD

Systems used to move loads as opposed to those aimed at reducing the friction under the load are described. The hydranautics components used in the systems outlined are the gripper-jack, the trans-lift and the chain-jack. The gripper-jack operates by moving a jacking cylinder relative to a locked gripper. The gripper is then unlocked, moved up to the load and the process repeated. Multiple jack systems have been produced capable of moving ships or other structures weighing up to 15,000 tons. The trans-lift is a walking beam system transporting heavy loads without the use of ways or tracks. The unit has two sets of feet; the outer feet support the load whilst the raised inner foot is moved forward relative to the fixed outer feet, then the raised outer feet are moved forward together with the load. Units of this type can be grouped together under a large load, or used as a tractor to tow loads up to 50,000 tons on rollers. The chain-jack is a double-acting hydraulic jack which climbs or hoists a moving chain using latches that can be alternatively engaged and disengaged with successive chain links. The hydraulically actuated latches are interlocked so that one latch set cannot be disengaged unless the other set is engaged. Combined systems can raise loads up to 2200 tons.

• Corporate Authors:

  Kalerghi Publications

  51 Welbeck Street
  London W1,   England 
• Authors:
  • Peters, B
• Publication Date: 1977-1

Language

• English

Media Info

• Pagination: p. 4-7
• Serial:
  • Hovering Craft and Hydrofoil
  • Volume: 16
  • Issue Number: 4
  • Publisher: Kalerghi Publications

Subject/Index Terms

• TRT Terms: Commodities; Freight traffic; Freight transportation; Heavy lift vessels; Hydraulic equipment; Hydraulic fluids; Hydraulics; Jacks (Mechanical equipment); Lifting equipment
• Old TRIS Terms: Heavy lifts; Hydraulic systems
• ITRD Terms: 283: Freight; 1112: Freight transport; 5431: Hydraulics (fluid); 3831: Jack; 5158: Lifting
• Subject Areas: Freight Transportation; Marine Transportation; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00170411
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Mar 7 1978 12:00AM