FI78660C - Elevator for a cooling vessel's relief system. - Google Patents

Description

78660

ELEVATOR FOR REFRIGERATED SHIP'S LOADING SYSTEM -HISS FÖR ETT KYLFARTYGS AVLASTNINGSSYSTEM

The present invention relates to an elevator for a refrigerated ship unloading system which transfers cargo products from a ship's cargo hold to a port cold store, for which the system includes an elevator shaft, and the elevator having two or more elevator platforms articulated directly or indirectly to guides to different elevator shaft walls.

As part of an efficient ocean fishing system, there is a refrigeration or processing vessel that processes catches in the catch area into products for sale to consumers. The processing vessel goes to the port to unload its chilled fish or crab products, returning to the catch area to receive the catches from the fishing vessels.

The unloading of a processing vessel involves a requirement for speed so that the vessel can return to the catchment area as soon as possible, as well as a requirement to maintain the quality of the products, ie a suitable temperature during unloading. The present invention relates to an automatic unloading apparatus by means of which chilled fish products packed on pallets are transferred from the hold of a processing vessel to a cold storage in a port.

In order to keep the hold of the refrigerated vessel at the desired, low temperature even during unloading, the aim is to keep the hatches in the cargo hold as small as possible and to close the hatch as closely as possible during the work. Em. this makes discharging based on the use of a conventional crane very difficult. The machine traditionally used for cargo handling of refrigerated vessels is the so-called "Banana elevator", which is a vertical chain or belt conveyor in the pockets of which man-made boxes can be placed. The use of a banana elevator involves a lot of manual work and is not suitable for large unit loads.

Larger unit loads can be handled with so-called page loading process. It includes a gate in the ship's side, through which loads are transferred using forklift trucks, an elevator inside the ship and possibly transported from the hold to the berth or vice versa. However, a fish processing vessel requires cranes and hatches for cargo handling at sea, which can also be used to unload cargo in port. Another side loading system is disclosed in SE-Kuulutus 434 723, which discloses an elevator for a ship's unloading system, in which the elevator has two elevator platforms mounted on guides on different walls of the elevator shaft. The blades are articulated to a carriage moving in guides and a hydraulic cylinder is provided for turning the blade. The problem with such a solution, however, is the large size of the elevator shaft.

The improved automatic unloading system consists of a pallet lift installed in a vertical, thermally insulated shaft, a horizontal conveyor and a platform-side pallet lift, as well as feed and buffer conveyors between and above the above parts. The conveyor system is fed into the hold of the vessel by fork lift trucks and the fish products are transferred from the conveyor to the warehouse using fork lift trucks.

The critical factor for the capacity of the above system is the capacity of the elevators. If the weight of the unit loads to be handled is large, the speeds of the reciprocating elevator cannot be increased so much that the desired capacity is achieved. One possibility to achieve sufficient capacity is 78660. "Pater noster" elevator. It has a number of elevator platforms attached to chains running around the upper and lower folding wheels, with the platforms moving continuously upwards on one side of the shaft and continuously downwards on the other side. However, the space requirement of an "Pater noster" elevator is usually too great.

The object of the present invention is to provide an elevator belonging to an unloading system which does not have the above-mentioned drawbacks. The invention is characterized in that the elevator platforms can be rotated substantially 90 ° between the horizontal position and the vertical position, so that the platforms moving in different directions can pass each other in the elevator shaft.

The basic idea of the invention is thus the use of a single, relatively small shaft for the control of several elevator platforms. A vertically turned pallet passes a loaded, counter-moving pallet well, even if the gap is only slightly larger than the pallet. Depending on the capacity required, the elevators can be mounted on either two, three or all four walls. In order for the elevators in the system to be able to operate continuously, a previously known feed / receive conveyor is required, as well as the necessary control systems for transferring the load to or from the elevator platform as soon as the elevator has stopped.

In the following, the invention will be explained in detail by means of preferred exemplary embodiments with reference to the accompanying drawings, in which

Fig. 1 shows an elevator according to the invention cut along the line I-I in Fig. 2.

Fig. 2 shows an overall view of the auotmatic discharge system.

4,73660

Figures 3-6 schematically show the driving movements of the discharge system.

Figure 1 shows a part of an elevator shaft 1 in which guides 2 are arranged. The guides are arranged on at least two walls of the shaft as required. The elevator slides 5 move along the guides, to which the elevator pallets 3 for containers 4, sacks or similar packages are pivotally articulated. Reference numeral 6 denotes the body of the horizontal conveyor, which is shown in more detail in Figs. 2-6.

In connection with the unloading, the elevator operates by loading a load 4 on the horizontal pallet 3 in the cargo hold, after which the pallet is driven up along the guide, the load is unloaded onto the horizontal conveyor 6, the pallet is turned to a vertical position and driven back down. In Figure 1, the pallets 3 are on two opposite walls of the shaft 1. The rectangular elevator shaft is made so small that the pallets 3 on the opposite walls can only meet by turning the returning pallet to a vertical position. The turning of the pallets 3 can take place with any suitable actuator, preferably a hydraulic cylinder (not shown in the figure).

Figure 2 shows the whole unloading equipment mounted on a gantry crane-like frame 7 moving on the rail berths. In order to be able to unload ships of different sizes and adapt to changes in water height and ship depth and to lower the elevator shaft from the hatch to the ship's hold, and the horizontal conveyor 6 is movably mounted on the frame. The driving movements of the structure are shown in Figures 3-6. By using the solution according to the invention described above for utilizing a single elevator shaft to control several elevator platforms, movable conveyor structures can be kept light and considerable savings can be achieved both in load-bearing structures and drive mechanisms compared to e.g. the aforementioned "Pater noster" solution.

In Fig. 3, the unloading apparatus is substantially in the position shown in Fig. 2. Moving the discharge unit out of the vessel is first raised to kuv.3 according to arrow elevator shaft 1 upwards with respect to other structure. Then, in accordance with the arrow kuv.4 horizontal conveyor is driven right in the figure, which will be in the position shown in Figure 5. In Fig. 5, the arrows show the last transfer movements, after which the position shown in Fig. 6 is reached. Correspondingly, if it is desired to transfer the unloading equipment to the ship again, the transfer movements take place in the reverse order.

It will be clear to a person skilled in the art that the invention is not limited to the above-mentioned exemplary embodiments, but can be varied within the scope of the appended claim.

Claims (1)

«73660 CLAIMS An elevator for a refrigerated ship's cargo unloading system, which transfers cargo products (4) from the ship's hold to a port cold store, for which the system includes an elevator shaft (1) and which has two or more elevator platforms (3) articulated directly or indirectly to the guides (2) on the different walls of the elevator shaft (1), characterized in that the elevator platforms (3) can be pivoted substantially 90 ° between the horizontal position and the vertical position so that the platforms moving in different directions can pass each other in the elevator shaft (1).