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Publication numberUS3248487 A
Publication typeGrant
Publication dateApr 26, 1966
Filing dateDec 28, 1964
Priority dateJul 11, 1963
Publication numberUS 3248487 A, US 3248487A, US-A-3248487, US3248487 A, US3248487A
InventorsMax Dechantsreiter
Original AssigneeHarnischfeger Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Shipboard cargo transferring apparatus having an electrical cable supporting means
US 3248487 A
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Description  (OCR text may contain errors)

April 6. 1966 M. DECHANTSREITER 3,

SHIPBOARD CARGO TRANSFERRING APPARATUS HAVING AN ELECTRICAL CABLE SUPPORTING MEANS Original Filed July 11, 1963 2 Sheets-Sheet 1 INVENTOR. MAX DECHANTSREITER BY April 1966 M. DECHANTSREITER 3,248,487

SHIPBOARD CARGO TRANSFERRING APPARATUS HAVING AN ELECTRICAL CABLE SUPPORTING MEANS Original Filed July 11, 1963 2 Sheets-Sheet 2 ff/ azed,

INVENTOR. MAX DECHANTSREITER United States Patent 3,248,487 SHIPBOARD CARGO TRANSFERRING APPARA- TUS HAVING AN ELECTRICAL CABLE SUP- PORTING MEANS Max Dechantsreiter, Milwaukee, Wis., assignor to Harnischfeger Corporation Original application July 11, 1963, Ser. No. 294,329, now Patent No. 3,190,456, dated June 22, 1965. Divided and this application Dec. 28, 1964, Ser. No. 421,412 3 Claims. (Cl. 191-12) This invention relates generally to shipboard cargo transferring apparatus and more particularly to such an apparatus of a travelling U-tyrpe gantry construction which is capable of fore and aft translational movement relative to the vessel and which is provided with a rotatable trolley designed for athwartship port and starboard translational movement so as to load and unload containers at any desired point of the vessel and on either side thereof.

This is a divisional application of our co-pending U.S. Serial No. 294,329 filed July 11, 1963, entitled Shipboard Cargo Transferring Alpparatus which issued on June 22, 1965, as Patent Number 3,190,456.

An object of the present invention is to provide a shipboard cargo transferring apparatus of the above type having a power loop cable carrying system which m-ain tains the electrical cables interconnecting the movable trolley and the relatively stationary gantry crane in a tensionless, non-wearing disposition.

Other objects, advantages and features of the subject invention will hereinafter appear, and, for purposes of illustration, but not of limitation, an exemplary embodiment of the subject invention is shown in the appended drawings, in which:

FIGURE 1 is a transverse elevational View from aft to fore of a deck of a vessel equipped with a shipboard cargo transferring apparatus constructed in accordance withthe subject invention;

FIGURE 2 is a schematic diagram of a power loop arrangement for handling the electrical cables leading to the trolley; and

FIGURE 3 is an enlarged fragmentary schematic view of a cable carrier employed in the power loop system.

General arrangement With reference to the drawings, the numeral 1 generally designates a shipboard cargo container transferring apparatus produced in accordance with the subject invention. The apparatus 1 comprises a travelling U-type gantry crane 2 which is mounted on the deck 4 of a ship for movement relative thereto. The gantry crane 2 is adapted forfore and aft translational movement relative to the deck 4 and a trolley assembly 6 is mounted on the crane 2 for athwartship port to starboard translational movement relative to the deck 4 and for rotational movement to face either the port or starboard sides.

Translatable lower trolley frame The trolley assembly 6 comprises a lower trolley frame which is adapted for athwartship port to starboard translational movement and an upper revolvable trolley frame 22 for rotational movement relative to the lower trolley frame 20, as hereinafter described. The opposite ends of the lower trolley frame 20 are provided with suitably journalled pairs of rim-wheels 24, 26, 28.

Power loop system ment, these means, which are illustrated in FIGURES 2 and 3, comprise a junction box 103 which is affixed to the gantry crane 2 and a junction box 105 which is affixed to the lower frame 20 of the trolley assembly 6. A ladderlike cable carrier assembly 107 is affixed to the junction boxes 103 and 105 and is trained about a loop drum 109. The assembly 107 comprises two parallelly aligned cables i111 and 113 with a series of interconnecting cable carriers 11-5.

As best seen in FIGURE 3, the cable carriers 115 each comprise a lower cable support member 117 and an upper cable support member 119 which are interclamped, as by a bolt assembly 121. The members 117 and 119 are also secured to the cables 1-11, 113, as indicated at 99 in FIGURE 3. In this manner, flexible electrical cables, such as the cables 123-125 schematically illustrated in FIGURE 3, may be sandwiched between the members 117, 119 for appropriate connection to the respective junction boxes 103 and 105.

A bail 1-26 is connected to the loop drum 109, and a bridle sheave 127 is affixed to the bail 126. Dead-end sheaves 129, 130, and 1311 are each afiixed to the gantry crane 2. A tension cable 133 is afiixed at one end to an.

extension 135 of the trolley assembly 6 and is trained about the successive sheaves 131, 130, 129, and 1 27, and is dead-ended on the gantry crane 2, as indicated at 13 7.

'In this manner, translational movement of the trolley assembly 6 relative to the gantry crane 2 will provide for self-adjusting tensioning of the carrier assembly 107 since the tension on the cable 133 (and therefore the tension on the sheave 127) is a function of the relative positioning of the trolley assembly 6 and the gantry crane 2. It should be noted that virtually no tension is placed on the supported cables 123425 themselves, since all the tensile load is carried by the cables 111, 113. Also, wear and abrasion of the cables 123-125 is minimized in the supported state since no slippage of the cables relative to the carriers 115 is evidenced, notwithstand the tensioned repositioning of the assembly 107 as the trolley assembly 6 moves relative to the gantry crane 2.

As the trolley assembly 6 is thus moved in the port or starboard directions, the power loop system provided by the present invention and illustrated in FIGURES 2 and 3 maintains electrical connection between the junction box 105 of the trolley assembly 6 and the junction box 103 of the gantry crane 2 without imposing tension upon the connecting electrical cables themselves and without affording any opportunity for slippage of the electrical cables relative to a wear surface.

Various modes of carrying out the invention are contemplated as being within the scope of the following claims particularly pointing out and distinctly claiming the subject matter which is regarded as the invention.

I claim:

1. A power loop system for feeding flexible cables between a stationary and a movable member comprising:

a junction box on the stationary member;

a junction box on the movable member;

a cable carrier assembly interconnecting the said junction boxes-and comprising two parallelly aligned tension cablesand a series of cable carriers extending transversely therebetween;

flexible electrical cables interconnecting the respective junction boxes and loosely supported by the said cable carriers;

a loop drum, the said cable carrier assembly being trained about the loop drum;

a bridle sheave;

means connecting the loop drum and the bridle sheave;

sheave means dead-ended on the stationary member;

and

a tension cable which is dead-ended at one end at the movable member and at its opposite end at the stationary member and which is trained about the sheave means of the stationary member and about the bridle sheave attached to the loop drum;

whereby self-adjusting non-tens-ioned feed of the carried electrical cables may be achieved.

-2. Shipboard cargo transferring apparatus comprising, a gantry crane and a trolley movable in respect thereto, a :power loop system for feeding flexible cables between said crane and movable trolley comprising:

-a junction box on the crane member;

a junction box on the trolley member;

a cable carrier assembly interconnecting the said junction boxes and comprising two parallelly aligned tension cables and a series of cable carriers extending transversely therebetween;

flexible electrical cables interconnecting the respective junction boxes and loosely supported by the said cable carriers;

a loop drum, the said cable carrier assembly being trained about the loop drum;

a bridle sheave;

means connecting the loop drum and the bridle sheave;

sheave means dead-ended on the crane member; and

a tension cable which is dead-ended at one end at the trolley member and at its opposite end at the crane member and which is trained about the sheave means of the crane member and about the bridle sheave attached to the loop drum;

whereby self-adjusting non-tensioned feed of the carried electrical cables may be achieved.

3. Apparatus as set forth in claim 2 including means for clamping said cable carriers to said tension cables to hold said tension cables in properly spaced apart relationship whereby said carriers support said electrical cables for travel with said tension cables and with no relative slippage between said electrical cables and said carriers.

References Cited by the Examiner UNITED STATES PATENTS 2,975,807 3/196'1 Waninger 19112 X I FOREIGN PATENTS 309,871 12/ 1918 Germany. 874,209 4/ 195 3 Germany. 1,082,644 6/ 1960 Germany.

698,616 10/ 1953 Great Britain.

EUGENE G. BOTZ, Primary Examiner.

ARTHUR L. LA POINT, Examiner.

S. Ti KRAWCZEWICZ, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2975807 *Sep 30, 1954Mar 21, 1961Gilbert WaningerSupply conveying means
*DE309871C Title not available
DE874209C *May 13, 1951Apr 20, 1953Juergen Dipl-Ing OrtmannBewegliche Kabelzufuehrung fuer elektrische Anlagen mit zum Teil ortsveraenderlichen Geraeten, insbesondere Foerderanlagen
DE1082644B *Apr 21, 1959Jun 2, 1960Kabelschlepp GmbhKabelwagen zum Zufuehren von elektrischen Kabeln, Schlaeuchen oder biegsamen Wellen zu ortsveraenderlichen Verbrauchern
GB698616A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3332434 *Jul 1, 1965Jul 25, 1967Bernhardt StahmerCarrier system for supplying power lines to reciprocating machines
US3423545 *Aug 23, 1967Jan 21, 1969Aero Motive Mfg CoPower carriage with retractable pulley
US3804111 *Jun 20, 1972Apr 16, 1974Inst Francais Du PetroleApparatus for storing a flexible elongated member, such as a flexible drill column
US4600817 *Nov 10, 1983Jul 15, 1986Schubert & SalzerApparatus for guiding flexible supply lines
US5277386 *Oct 31, 1990Jan 11, 1994Merlin Teknologi AsHose and cable conveyor
EP1475344A1 *May 4, 2004Nov 10, 2004Compagnie Du SolGuiding device for hydraulic hoses
Classifications
U.S. Classification191/12.00C, 138/110, 137/355.17
International ClassificationB63B27/00, B63B27/12
Cooperative ClassificationB63B27/12
European ClassificationB63B27/12