Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
  • B66C13/00—Other constructional features or details
  • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
  • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads

Definitions

• the invention relates to a pendulum and torsional vibration-free suspension device for lifting traverses, which are used for the handling of containers and which is formed from a plurality of ropes running from a rope drum or running onto these, which are guided to the lifting traverse via rope pulleys.
• DE-PS 240627 describes a device for avoiding the pendulum of the load in hoists, in which the lifting element such as hooks, pliers, magnets or the like on a frame carrying hoisting rope are arranged in three or more directions diverging upwards.
• the frame has the shape of an equilateral triangle.
• the load element is hung on the frame at its center of gravity.
• loose rollers for three cables are stored in the middle of the sides of the frame. The storage is designed so that it can adapt to the changing inclination of the ropes.
• Fixed rollers are mounted on a trolley in the same way. Each cable is attached to the trolley once, while the other strand runs onto the lifting drum via deflection rollers. The cables run at different angles, these angles changing with the length of the suspension.
• the disadvantage is that the load is suspended at one point. As a result, containers with an off-center center of gravity cannot be kept free of interference. In addition, the transmission of rotary movements is not possible.
• DE-OS 2133536 describes a hoist with rigid suspension of the load-bearing member with a total of four pairs of cables which are connected to a cable drum in such a way that they can be wound up and unwound.
• Four ropes of the rope pairs are each guided via reversing sheaves to further sheaves, which are mounted in pivotable or rotatable housings, which are arranged in the corners of the frame of the lifting mechanism near the rope drum.
• the other four ropes go directly from the rope drum to rope sheaves which are each mounted in pivotable or rotatable housings and which are arranged at the corners of the frame of the lifting mechanism, which are located in corners distant from the rope drum.
• a disadvantage of this arrangement is that with this statically indefinite suspension, pendulum prevention only occurs if all four ropes of the four-point suspension carry the load. In all other cases, an oscillation is converted into a torsional vibration.
• the invention has for its object to provide a statically determined three-point suspension, in particular for the loading device for containers, in which there are statically determined forces in the suspension points.
• the load should be suspended in any direction without pendulum and torsional vibrations.
• the invention solves the problems with the features of the main claim. Further advantages adhesive embodiments are the subject of the dependent claim.
• the invention has the advantage that each suspension point is held by two stay cables in the direction that the plane formed by the stay cables is pendulum-free. As a result, the load is ultimately suspended in any direction without pendulum.
• Fig. 1 - a semi-perspective representation of the schematic principle of the suspension
• FIG. 2 - a top view of FIG. 1
• Fig. 3 the three suspension triangles, which are formed by the stay cables
• a cable drum 2 for a lifting traverse 3 is arranged on a trolley or at the front end of a crane boom 1.
• the cable drum 2, the drive of which is not shown in detail, is used to hold three pairs of cables 4,5,6 of the same length of a cable suspension 7, which are formed from the cables 4a, 4b, 5a, 5b, 6a, 6b.
• the ropes of each of the three pairs of ropes 4, 5, 6 are each guided over a horizontally lying pair of rope pulleys 10, 11, 12, which are supported in the crane boom 1 via their vertical axes.
• the middle pair of rope pulleys 11 are offset inward in relation to the two outer pairs of rope pulleys 10, 12 in the direction of the cable drum 2, and the cables 5a, 5b are guided over additional cable pulleys 13, 14, the axes of which are aligned with those of the cable pulley pairs 10, 12.
• the planes which are formed by the three fastening points 21, 22, 23 on the lifting traverse 3 and the cable pulley groups 15 and 16, 17 and 18, 19 and 20 are offset from one another by 60 degrees.
• the three fastening points 21, 22, 23 lie on the corners of an equilateral triangle.
• the attachment points 21 to 23 form with the rope pulley groups 15 to 20, as shown in FIG. 3, three rope triangle levels 24, 25, 26, whereby for example the one rope triangle level 24 of one rope pair 4 consisting of the ropes 4a, 4b the rope pulleys 15, 16 and the attachment point 21 is formed.
• the center of gravity 27 of the lifting traverse 3 lies in the center of gravity of the triangle formed by the fastening points 21 to 23.
• FIG. 1 Compared to the rope suspension described above, a further embodiment in rope bottle design is shown in FIG. 1.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Load-Engaging Elements For Cranes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6339569

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (6)

Citations (8)

Family Cites Families (1)

• 1987
  • 1987-10-31 DE DE19873737082 patent/DE3737082A1/de active Granted
• 1988
  • 1988-10-11 WO PCT/EP1988/000907 patent/WO1989004288A1/de unknown
  • 1988-10-27 DD DD32114288A patent/DD281579A5/de not_active IP Right Cessation

Patent Citations (8)

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