Hydraulic and earth engineering – Fluid control – treatment – or containment – Floatable matter containment
Patent
1994-04-15
1996-12-17
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Floatable matter containment
242537, 405 63, 405 66, E02B 1504
Patent
active
055846041
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an apparatus for booms, preferably so-called self-expanding booms, which comprises a plate arranged on a platform, which plate is rotatable by means of a motor unit, and which comprises a means for winding-up the boom, which means is placed essentially vertically and essentially at the middle of the plate, and a means for feeding-in the boom, which means is arranged at an outer portion of the platform.
Such an apparatus is previously known from the granted Swedish patent application 429 143. This known apparatus has three guiding rolls placed on the platform itself at a distance from the means for winding up the boom, which rolls are connected together with the winding-up means by an overhead rod. This means that the known apparatus becomes unnecessarily expensive to manufacture.
SUMMARY OF THE INVENTION
This invention relates to a winding-up means, which is inexpensive to manufacture and which is effective to use when rolling-up the booms. The effectivity depends primarily on the fact that the motor unit and the means for feeding-in the boom simply can be plugged into and out of the platform.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred embodiment of the invention shall be described more closely below with reference to the accompanying drawings, wherein:
FIG. 1 shows the apparatus in a disjoined condition, and
FIG. 2 shows the apparatus in an assembled condition with a boom during the winding up phase.
DETAILED DESCRIPTION
Referring to FIG. 1, there is shown there a preferred embodiment of the new apparatus. This one comprises a rotatable plate 1, which is arranged on a platform 2. This one comprises tubular plate girders which are arranged in that way that there are created two cavities 3a, b; 4a, b; 5a, b; 6a, b having rectangular cross-section at four areas outside the plate, each of which having an angular distance to each other of about 90.degree.. In any one of these cavities, a motor unit 7, which is intended to rotate the plate 1, can be plugged in. In this connection, the male part 8 of the motor unit is projected into the cavity 3a. The motor unit comprises a gear pinion 9, which is intended to go into engagement with the plate 1 when the motor unit is plugged in, the peripheral portion of the plate being arranged in that way that it can receive the teeth of the gear pinion 9.
A means 10 for feeding in the boom is also intended to be plugged into the platform 2. This means has a relatively long male part 11 which in this case is intended to be introduced into the cavity 5a. The feeding means 10 is further provided with a first feeding roll 12, which is fastened in the frame 13 and which projects obliquely upwards in a direction forming the angle .alpha. with the horizontal line. The angle .alpha. suitably lies between 20.degree. and 70.degree.. The feeding roll 12 is intended to be in contact with the portion 14 of the floating body of the boom (see FIG. 2) when drawing in the boom. A second feeding roll 15 is fastened in the same frame 13 as the roll 12 and at essentially an angular distance of 90.degree. from the same. This roll is intended to be in contact with the skirt portion 16 of the boom (see FIG. 2) when drawing in the boom, i.e. the portion which is fastened in the lower part of the floating body and which at the bottom is provided with weights, whereby the boom can be held in a correct position in the water.
The position of the frame 13 in relation to the male part 11 can be changed within certain areas by an adjusting means 17.
The apparatus further comprises a means 18 for winding-up the boom, which is detachably arranged essentially at the middle of the plate 1. This means 18 comprises four pipes 19a-d which at the top are kept together by a plate 20 and which at the bottom are fastened in a suitable way in the plate 1. This fastening can be made by means of four long bolts 21a-d, each of which penetrates a corresponding pipe. In that connection, the pipes 19a-d are arranged in that way that the means 18 has a conica
REFERENCES:
patent: 3798911 (1974-03-01), Oberg
patent: 3971220 (1976-07-01), Kinase et al.
patent: 4030678 (1977-06-01), Simpson
patent: 4117991 (1978-10-01), Johnson
patent: 4198010 (1980-04-01), Knap
patent: 4480800 (1984-11-01), Oberg et al.
Henrik Osterlund
Taylor Dennis L.
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