DE8808248U1 - Movable crane for heavy goods - Google Patents

Description

Hans Wilcke .... ,. >

Gotenstr« 9
5484 Bad Breisig

Movable crane for heavy goods

The invention relates to a mobile crane for heavy goods, primarily but not exclusively intended for inland waterway vessels and light seagoing vessels, characterized in that the crane, consisting of two coupled, pivoting booms, can be moved lengthways and picks up or releases the loads, e.g. containers, via the bow or stern, is collapsible and is operated primarily with the aid of push chains.
Container cranes for on-board and land-based installation are known in various designs. They are generally characterized by high weight, high center of gravity, complex technology and thus high speed. They can therefore only be used economically in places with a high demand for handling (e.g. terminals). Due to the lack of on-board handling facilities, inland shipping could only participate in container traffic after corresponding, expensive container terminals with land-based handling equipment had been built. Particularly in the second and third world countries, for example, it is not possible to integrate them into the world container traffic using natural, low-cost waterways.

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because there is a lack of suitable container handling facilities for ~ lighter ships with low investment costs.

The currently usual transshipment of cargo using on-board equipment is only possible with vessels of considerable displacement and width, which are too complex for a comprehensive feeder network with low traffic volumes or too large for the waterways.

The transport of dangerous goods in containers on inland waterways is considered to be relatively safe, but requires longer road transport routes from terminals located in or near large cities with high traffic volumes.

/4 The purpose of this invention is to present a crane for handling heavy goods, e.g. containers, which can be installed on inland waterway vessels and light seagoing vessels, excludes the occurrence of stability problems during handling, requires simple technology and is therefore inexpensive to manufacture and can also be used effectively in stationary installations _.

By using lifting chains, the boom of the crane can be easily swivelled from a horizontal position (transport position) by almost 180° (maximum reach) and moved on the rail track. By combining both drives, the loads can be moved in any direction. Containers can also be handled outside of port facilities, e.g. on ferry piers, in secured docks, etc.

can be transshipped independently of high and low water. In addition, dangerous goods can be landed/picked up at many locations along the Rhine, for example, outside of local areas.

The invention is explained in more detail below with reference to drawings. These drawings show only exemplary embodiments and do not exclude other conceivable designs according to the invention.
Separate protection rights have been applied for for the push chain (5 # 8 , 20) used several times on the crane, including its drive and deflection housings (6, 9, 14, 21). These parts are therefore not described in detail here. The main characteristic of the lifting chain is that it is constructed like a roller chain, can transmit both lifting and tensile forces and is secured against buckling outside the housing. The housings are designed so that the chain can extend or retract at different angles under load. All drives are self-locking.

The protective rights for the push chain and the associated drive are registered with the German Patent Office under Hr ₉ G 88 06 871 ·4 |

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&sgr; In the following the crane is installed on an inland |

ship shown. j

Pig. 1 shows a barge with crane in side view, jf

putting a container on a trailer on land. j|

2 the crane, taking a container on board, I

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Pig. 3 the crane folded in transport position Pig. 4 a design of the crane rail (1), upper roller (2) and lower rollers (3)» crane carriage (4), boom (11) and support (12) in transport position in the cross-section. Pig· 5 the boom (11) in the longitudinal cross-section with built-in hydraulic hoist and

Pig. 6 shows the cross member (15) with spacer (16) and drive in section.
In Figure 1, the crane rail (1) is visible, which is laid on the side longitudinal corridor next to the crane hatch and extends to the outer end of the rectangular bow in order to achieve the greatest possible reach of the boom (11). The crane carriage (4) rolls on the crane rail, moved by the push chain (5), which is driven by the push chain drive (6). In order to ensure synchronous operation, the push chain drives of both crane carriages (4) are driven via a common shaft of a drive machine, e.g. via a self-locking worm gear. The boom (11) and the support (12) are each mounted on the support (4) so that they can rotate from the imager (10). While the boom (11) usually has a rectangular or round cross-section (see Fig. 6), the support (12) preferably has a diagr;&Ggr;-shaped cross-section, so that the support (12) can accommodate the boom (11) in the folded state.

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Both booms (11) and supports (12) are connected to one another by fixed cross beams (15), whereas booms (11) and supports (12) are provided with a stiffener with an articulated joint (14) on each side. The stiffener (14) is self-locking when extended and ensures a predetermined angle of inclination during operation. With the help of the lifting chain (8), which is driven by the lifting chain drive (9) on the crane truck (4), is rotatably attached to the boom (11) and is guided via the steering housing (14) at the tip of the support (12), the boom (11) is pushed upwards from its rest position and thus erected. The stiffener (13) stretches and takes the support (12) with it as it swivels further. The support (12) prevents the otherwise necessary overdimensioning of the push chain (8) even when the boom (11) is extended further.

Alternatively, the connection between the boom (11) and the support (12) can be formed at their outermost points by a connecting beam that can be folded and locked in both end positions and which can be moved by moving the

stretching is moved .

In order to be able to grasp the containers standing in several rows on board in an appropriate manner, a spacer (16) of approximately the width of the container is located on the tubular cross member (15), which can be moved on the cross member (15) and to which the hot-dish (22) is attached.

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For handling at a fixed pier (see Fig. 2), the bottom is secured with a mooring anchor placed upstream and a bow line placed upstream. The bow can rest on the edge of the quay wall, especially if it is a boat with a low water displacement. The container is lifted from the trailer (32) waiting on the pier and swung on board. The lifting chain (8) is subjected to tension. When the boom (11) is swung into the position shown in Fig. 2, the chain (8) supports the boom (11) and is subjected to lifting. By alternately operating the push chains (8) and the chains (5) for the crane trucks (4), an approximately vertical load movement is generated; by simultaneously and coordinated operating of both drives, vertical load movement is possible.

To cover larger storage areas along the pier, the ship is moved parallel to the pier by pulling in/putting in the anchor line and mooring line. If the containers have to be set down on the pier, various vehicles with loading equipment and a simple construction axe are available for removal; for which separate protection rights have been applied for.

To compensate for the tipping moments that occur when the boom (11) is extended, the crane truck (4) (see Fig. 1 and 2) is used.

5) on the crane rail (1) a double T-shaped with upper roller (2) and lower rollers (3). Alternatively, a U-shaped crane rail can be used or instead of upper

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and under rollers of the crane trucks engage with the rails»
f ends Hollen can be guided by forklift truck type.
In Pig. 5 the attachment of the push chain (5) is also shown.
for moving the crane truck (4) and the associated drive
(6) with the drive shaft (7) can be seen.

The box-shaped crane truck (4) also serves as
Magazine for the unused parts of the push chain (8). f The cross member (15) which is firmly connected to the two arms (11) is preferably tubular. The spacer (16) is also tubular and is movably mounted on it, enclosing the cross member (15). The &Idigr;

The spacer is dimensioned so that the Xast harness | (22) can be guided perpendicular to the attachment points. ] Ball cages &igr; are provided at both ends of the spacer (16).

(17) which, filled with balls (18), both
allow movement of the spacer (16) between the two booms (11) for positioning above the load, as well as rotation on the cross member when the booms (11) are pivoted. A lifting chain holder (19) is rotatably attached to one side of the spacer (16), to which the lifting chain (20) causing the transverse movement of the spacer (16) is attached. The lifting chain (20) is moved by the lifting chain drive (21) attached to or in the boom (11). [

The spacer (16) is secured with a safety harness (22) and a load-bearing capacity of 100 kg , primarily in pairs on each side. |

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Hooks are used. The slings can be inserted into the upper or lower container fittings, depending on accessibility. If the containers are stowed on board in several layers, the lifting height of the boom can be adjusted appropriately using slings of different lengths.

In an alternative, the booms (11) can be designed to be telescopic in order to increase the lifting height of the crane.

In a further alternative, the spacer (16) can be mounted so that it can be moved transversely on a crossbeam (2^)', which is suspended below the crossbeam (15) on two cables (24-). The cables (24) are attached to the tips of the booms via cable pulleys (25) and via deflection pulleys

(26) and attached to the boom. The deflection rollers are moved by actuators (27), e.g. hydraulic cylinders, and thus cause the boom to be raised and lowered (cf.

(Pig. 5).

According to this invention, circulating ropes or chains or rack and pinion drives can also be used to move the crane carriages (4)

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Claims (1)

&bull; t · · · t It 4 · · · &bull; at· · t «Q ■ t · ■ &bull; 4 ··· ft « · I ·■ &Lgr; Gotenstr. 9 5484 Bad Breisig Sohutzanspray 1. Mobile crane for heavy goods, primarily but not exclusively intended for inland waterway vessels and light seagoing vessels&rgr; characterized in that the crane formed from two coupled, pivoting booms (11) can be moved longitudinally of the ship, picks up or releases the loads, e.g. containers, over the bow or stern, is collapsible and is operated primarily by means of push chains, in particular characterized in that the crane is movable on two mainly double-T-shaped or U-shaped longitudinal crane masts (1) mounted parallel near the side walls by means of two unconnected crane carriages (4) over rollers (2,3) that absorb dirt and tension, and for movement in both directions ¹ push chains (5) are attached to the crane carriage (4), which are guided via push chain drives (6) which are connected to a common shaft (7) and moved by a self-locking drive,
further characterized in that on each crane truck (4) a boom* (11) and a support (12) are mounted so as to pivot around the bearing (IO) and the two booms (11) and the supports (12) are firmly connected with cross beams (15), ti »4 4* *t ««· Il ti r> ie ·· ·· ·· tit« ««« ««·« &bull;»reiter characterized in that push chains (8) are rotatably attached to the tip of the booms (11), which are guided via steering housings (14) at the tips of the supports (12) and are received by the drive housings (9) on the crane truck (4), further characterized in that the cross member (15) between the arms (4) is tubular and is surrounded by a spacer (16) which is also tubular and which is provided with ball cages (17) at its ends and is mounted on the cross member (15) via balls (18). and further, on one side of the spacer (16) a rotatable push chain holder (19) with a push chain (20) is attached, which is guided on a boom (11) via a push chain drive (21). ' 1? 2. Movable crane for heavy goods according to claim 1, characterized in that for moving the crane carriage (4) circulating ropes or chains or rack and pinion drives ^ are provided» ! 3· Portable crane for heavy goods according to claim 1 and \ 20 2, characterized in that the connection between &iacgr; tip of the boom (11) turt tip of the support (12) by a rigid, foldable connecting beam that can be secured in both end positions is formed and the push chains (8) are rotatably attached to the supports (12) 25 4. Movable crane for heavy goods according to claim 1, 2 f and 3, characterized in that the booms (11) te« &iacgr; leskOT?artifi: are changeable in their iänee. 4· «· · ff «t · i · M &bull; I · » · · t * * * t · · I &diams; t a h ■! · a 5. Movable crane for heavy goods according to claims 1, 2, 3 and 4, characterized in that the tips of the booms (11) are equipped with rope pulleys (25), the load is suspended on a crossbeam (23) under the crossbeam (15) and the crossbeam (23) is attached to ropes (24) which are guided over the rope pulleys (25 ) and connected to the respective boom with actuators (27) attached there.