DD43744B1 - ARRANGEMENT OF LIFTING AND WIPPING OF BOAT CRANES, IN PARTICULAR BOAT CRANES - Google Patents

Description

Arrangement of the lifting and luffing works of jib cranes, in particular on-board jib cranes

The invention relates to the arrangement of the drive unit with cable drum and L'otor trained lifting and luffing jib cranes, especially of Bordv / ippkranen, with a closed trestle. Known cranes of this type have a platform, v / elche except the slewing, the cab, the attachment for the boom also carries the support bracket. In most cases, on this side of the trolley, there is an area on the side opposite the driver's cab, which serves to mount the gearboxes with the electric motors directly flanged on or otherwise known.

In this arrangement of lifting and luffing load engine and transmission significantly to the side and to the rear, due to the fact that the engine and cable drum are parallel to each other. It does not matter whether the power transmission from the motor to the cable drum is made via a built-in these epicyclic gears and cable drum and motor are mounted on so-called drum blocks or made on a conventional, to be mounted on a base spur gear.

Even the already proposed gear arrangement with angle gears on the platform of the luffing crane requires a larger design of the platform and a large free space in the swivel range. This is a major disadvantage with jib cranes used on ships. "The space to be cleared for engine thrust is lost at the hatch face. A further IT disadvantage is the not inconsiderable mass of the winch frames for the gears, which increase the weight of the crane. This gains all the more importance because the crane is relatively high overboard and there each

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Weight gain negatively affects the stability of the ship. Another problem with the arrangements described is that the cables are difficult to access. The invention has for its object to arrange the lifting and luffing work on jib cranes so that a cost reduction and weight savings is achieved, more comfortable installation conditions are created, easy accessibility achieved and the crane is given a more advantageous appearance in its entirety.

According to the invention the object is achieved in that the arranged with their rope drum axes at right angles to the pulley axis lifting and luffing mechanisms are mounted on the rear wall of the support bracket so that the cable drums of the lifting and the luffing project at right angles from the rear wall of the support bracket and their laptops are inside the support frame. The lifting and the luffing gear are fixed with a splash on the back wall of the support frame.

The invention will be explained in more detail using an exemplary embodiment. In the drawing show:

Pig »1: a side view of the support frame of a jib crane,

Fig. 2: the back of the support frame of a jib s.

The support frame 1 represents a closed box girder whose rear wall is designed such that the complete lifting and luffing mechanism can be attached thereto. While the gear 2, 3 of the lifting and luffing plants protrude backwards and are fixed with a chute 4 $ 5 at the back of the support frame 1, the motors 6j7 extend completely into the support frame 1 inside. By attached flaps is provided for a sufficient ventilation, maintenance and operation of the motors 6, 7.

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The cable drums 8; 9 of the lifting and luffing mechanisms enclose the gearboxes 2 ^ 3 bell-shaped, the storage of the cable drums 8 $ 9 being accommodated in the gearboxes 2, 3 "Pig" 2 shows the rear side of the support frame 1 with the guidance of the lifting gear. and rocker cables 1o} 11 from the pulleys 12; 13 in the support frame 1 to the rope drums 8 $ 9 · The axes of the rope drums 8,9 are offset by 9o ° relative to the pulley axis 14. The cable guide can also be mirror images.

Documents considered: DE-PS 941019, 1001471 (35 b, 3/03)

Claims (2)

claims 1 _# arrangement of designed as a drive unit with cable drum and motor lifting and luffing jib cranes with a closed trestle, which carries at its upper end a pulley and on which the lifting and V / ippwerk are mounted from the outside, characterized in that arranged with their cable drum axes at right angles to the pulley axis (14) lifting and luffing mechanisms on the rear wall of the support frame (1) are mounted so that the cable drums (8; 9) of the lifting and Y / ippwerkes at right angles from the Rear wall of the support bracket (1) protrude and their motors (6; 7) are located within the support bracket (1). 2 _# Arrangement of lifting and luffing mechanism according to claim 1, characterized in that the lifting and the luffing gear with a splashing (4; 5) on the rear wall of the support bracket (1) are attached. - For this a sheet of drawings -