SE419741B - MOVEMENT BODY PROVIDED BY CORBANE PLANE TO DISCOVER TURNING TRENDS CAUSED BY PASSING LOADS - Google Patents

Description

7962130-9 passing load, and which eliminates the above-mentioned disadvantages of the prior art.

The invention is characterized by a balancing mass hanging freely under a floating body, a number of bottom-anchored fastening means, a number of ropes arranged for gravity distribution running from each fastening means via the floating body to one and the same fastening point at the balancing mass and a number of inner and outer deflecting means rotatably arranged around the floating body attaches horizontal shafts and in pairs each supporting a line at its stretches adjacent to the balance mass and the fastening means, respectively. = An embodiment arranged in floating bodies with a substantially parallelepipedic shape is characterized in that the inner deflecting means are placed so that the balance mass the vertical center axis of the float, and that the outer deflection members are located at equal distances from this axis.

Depending on whether the floating body is to be loaded asymmetrically or symmetrically with respect to the center line, the device is designed with four outer deflection members, which are located in each corner portion of the vertical plane of the float body bottom diagonals and with two outer deflection members located in each end portion of the float center.

A floating body provided with a device according to the invention can be easily delayed if the fastening means are anchored at the bottom by means of counterweights.

An embodiment of the invention will be described below with reference to the accompanying drawings, in which Fig. 1 shows a side view of a stabilizing device according to the invention arranged at a link-span pontoon, and Fig. 2 is the arrangement shown in Fig. 1 in plan view from above.

In Figs. 1 and 2, 10 denotes a substantially parallelepiped-shaped floating body; whose upper boundary surface 11 constitutes the carriageway plan for load-bearing vehicles 12, as well as the storage area for an overhead ramp 13 and a ship ramp 14.

To avoid heeling, when the vehicles 12 load the roadway plane 11 asymmetrically, a balance mass 15 is freely suspended under the floating body 10 in four ropes16. These run collected from a common attachment point 17 at the balance mass to their respective inner deflection means 18 via a bushing 19 in the center of the bottom surface 10a of the floating body. By means of the deflection means 18, each line 7902130-9 is distributed diagonally to one in the buoyancy body resp. corner portion arranged outer deflection member 20, from which it by a further bushing 21 runs substantially vertically down to a fastening member 23 anchored by means of a counterweight 22.

The deflection means 18, 20 are arranged slightly movable about horizontal axes Bh, resp. 25, and placed so that the ropes run freely in the bushings 19, 21. The outer members 20 are furthermore placed at equal distances from the central bushing 19 and at the same height above the bottom surface 10a as the inner 18. The bottom bushings 19, 21 are most easily made. as vertical pipe spouts, the height of which clearly exceeds the estimated maximum immersion of the floating body.

The ropes, which suitably consist of a chain or equivalent flexible elements, are thus easily movable relative to the buoyancy force, so that they always remain taut through the balance mass of the balancing mass 15 wmmmmw wwLmmLmu | nM | hehmuHumuu. is unloaded at the highest tide.

The floating body can easily be delayed in ports with tides, by locking the ropes 15 at low tide. The body's displacement then lifts the counterweights 22, when the water rises, and towing to another place can take place. Lifting of the counterweights can of course also be done with a winch or other suitable aid.

Bottom profile and depth can vary at different port sections, so it should be possible to adjust the length of the ropes. Suitable means, for example detachable links for ice splicing of extra chain lengths, can therefore be inserted in each line 15. In combination with means for fine adjustment, such as winch screws or the like, the length of the lines is easily adapted to current ground conditions, so that the weight of the balance mass is evenly distributed. the four lines.

Towards the correct adjusting torque lines I5, the unloaded buoyancy body assumes a buoyancy position on a waterline 26 (Fig. 1), which is parallel to the bottom surface 100. In this position it acts on the buoyancy body at the attachment shafts 25 from tensioning force as big. When the carriageway plane 11 is loaded by a transport vehicle 12, for example in one corner portion, as shown in Fig. 2, the clamping force in adjacent ropes decreases as a result of the floating body tending to rotate under the load 12 about a horizontal heeling axis 27 directed by 7902130 -9 displacement center of gravity (migration center). However, the reduction in clamping force in a line results in a corresponding increase in the opposite line due to the freely hanging balance mass. The resulting heeling moment thus remains zero and a vertical parallel movement of the floating body as a result of the load 12, due to a new waterline 28 (Fig. 1), takes place.

The dimensioning of the balance mass 15 naturally depends on the size and location (route) of the expected load. The least transmitted counterforce is obtained when the load attacks so that the floating body wants to tilt around a diagonally oriented shaft 27 ', as indicated in Fig. 2. Only the line, which runs to the corner portion I, will then be relieved and a counterforce, maximum amounting to half the weight of the balance mass can operate in corner III.

The weight of the entire balance mass is utilized by counteracting moments, when the load coincides with one of the path planes' 11 lines of symmetry. By, for example, turning around the heeling shaft 27 "(Fig. 2) and total relief of the ropes in corners I and II, the clamping force in each rope in corners III, IV is doubled, ie the weight of the entire balance mass is distributed equally on the latter corners. arbitrary heeling shaft 27 (as above) switches between the above extreme values.

Different types of ship ramps can give different loads, which, however, is counteracted by the stabilization device.

The liftable counterweights can be replaced with stationary, bottom-fixed studs or the like. If counterweights are used (in the case described) their mass shall be greater than half the balance. IIIQSSQII- Within the scope of the following claims, natural-. other embodiments are made. For example, a buoyancy body which, through the connection of the ramps and the design of the carriageway, will be loaded along the center line, is provided with only two lines running in the center line plane, which are redirected at equal distances from the balance line.

Claims (5)

7902130-9 PATENTKRAvg Device for counteracting heeling tendencies caused by passing loads in the case of a floating body, characterized by a balancing mass (15) hanging freely under a floating body (10), a number of bottom-anchored fastening means (23), a number of ropes arranged for gravity distribution (16) running from each fastening member (23) via the floating body to one and the same fastening point (17) at the balance mass, and a number of inner and outer deflection means (18, 20) rotatably arranged around horizontal axes (2ü, fastened to the floating body 25) and in pairs supporting each line (16) at its stretches adjacent to the balance mass and the fastening means (23), respectively. Device according to claim 1 arranged in floating bodies with a substantially parallelepipedic shape, characterized in that the inner deflection means (18) are positioned so that the gravity of the balance mass (15) in equilibrium position acts along the vertical center axis of the floating body (10), and that they the outer deflection means (20) are placed at equal distances from this axis. Device according to claim 2, characterized in that it comprises four outer deflection means (20), which are placed in each corner of the vertical plane of the vertical diagonals on the bottom bodies (10). Device according to claim 2, characterized in that it comprises two outer deflection members (20), which are located in each end portion of the center line plane of the floating body (10). Device according to one of Claims 1 to 10, characterized in that the fastening means (23) are bottom-anchored by means of counterweights (22). 7902130-9 Device according to one of the preceding claims, characterized in that at each line (16) there is arranged a means which enables adjustment of its length.