JP2012056738A - Loading device for large ship - Google Patents

Abstract

[PROBLEMS] To quickly move on a quay and efficiently load a load into a plurality of holds while maintaining the equilibrium of the ship.
A hopper that accommodates a load, a feeder that is disposed below the hopper and that carries the load to a relay conveyor, a relay conveyor that conveys the feeder load to the load conveyor, and a relay conveyor In a loading device provided with a loading conveyor for loading a load into a large ship's hold, (x) the feeder is provided with a self-propelled / traction mechanism having a height adjusting mechanism for adjusting the height of the feeder at the lower center. And (y) the relay conveyor is provided with a self-propelled / traction mechanism having a height adjusting mechanism for adjusting the height of the relay conveyor at the lower center, (Z) The loading conveyor has a height / angle adjustment mechanism for adjusting the height, elevation angle or depression angle, and turning angle of the loading conveyor at the connecting portion with the relay conveyor. That has a pivotable self-traction mechanism.
[Selection] Figure 1

Description

  The present invention relates to a loading device used when loading a large amount of cargo such as granulated slag into a large ship.

  Effective utilization of blast furnace slag discharged from the blast furnace is extremely important from the viewpoint of resource saving, energy saving, and the like. In particular, granulated slag that has been rapidly cooled and refined by injecting pressurized cooling water into molten blast furnace slag has been used effectively as a raw material for cement or as a substitute for sand. It has also increased.

  When exporting granulated slag outside of the country, it is loaded into a large vessel from the viewpoint of reducing transportation costs. In this case, in order to increase the efficiency of loading work, the loading device can be moved along (i) the vessel. And (ii) at the time of loading, in order to maintain the balance in the ship width direction, it is required to be able to advance and retreat in the ship width direction.

  Conventionally, when loading cargo such as coal, ore, and granulated slag into a ship berthing on the quay, existing portal cranes and movable belt conveyors have been used. As a result, more efficient loading is required.

  For example, when loading granulated slag, a pallet containing the granulated slag unloaded by a large dump truck (30t class) is lifted up to the ship with a steel crane for exclusive export of steel products (movable two-dimensionally), and ship hatch Tilt the pallet at the position of and put the granulated slag. However, this loading method has the following problems.

  (a) Since the loading amount per dump is one dump truck (30t class) and the loading time (dump unloading time + lifting time of the portal crane) is less than 10 minutes. The loading capacity is limited to about 250 t / hour.

  (B) Therefore, for example, loading on a 30000t class vessel will take about 5 days even if it is done without holidays, which will lead to an increase in transportation costs and affect loading of product shipments. It will be.

  Several loading systems using a belt conveyor instead of the gate crane have been disclosed so far (for example, see Patent Documents 1 and 2).

  In Patent Document 1, a belt conveyor device in the vehicle length direction (a receiving hopper is provided at a carry-in portion at the start end, and a discharge device with a changeable discharge port at a discharge portion at a terminal end where the level can be changed is provided in a vehicle body that can travel. There is disclosed a loading work vehicle provided with a.

  Patent Document 2 discloses a receiving device that receives a load from a dump vehicle stopped on a fixed slope, a self-propelled charging device that can load the received load into a ship, and a received loading. A shipping device having a plurality of conveying devices for conveying an object to a self-propelled charging device is disclosed.

  However, the mobile belt conveyor system has problems such as the main body weight (especially the hopper and feeder) becomes excessive due to the increase in size of the belt conveyor, the movement becomes not easy, and the loading efficiency is lowered. Have. After all, until now, no loading device that can efficiently load a large amount of granulated slag into a large ship has been proposed.

JP 2000-327138 A JP 2005-112576 A

  In order to load a load such as granulated slag into a plurality of holds of a large vessel, the loading device needs to move to a position suitable for loading on the quay. One method for increasing the efficiency of the loading operation is to shorten the moving time (resting time) of the loading device.

  However, since the loading position of the large ship into the hold is usually high, in the work vehicle for loading provided with the belt conveyor device disclosed in Patent Document 1, the belt conveyor is long and difficult to move quickly, Eventually, it takes a long time to move the belt conveyor.

  Patent Document 2 discloses a receiving device that receives a load from a dump vehicle stopped on a fixed slope, a self-propelled charging device that can load the received load into a ship, and a received load. In a loading device equipped with a plurality of conveying devices that convey the load to the self-propelled charging device, each time the self-propelled charging device is moved to a predetermined position, the loading device is loaded into a plurality of cargo holds. These transport devices must be moved together, resulting in long pause times.

  Therefore, the present invention quickly moves to a position suitable for loading on the quay, and efficiently loads cargo such as granulated slag into a plurality of holds while maintaining the equilibrium of the ship. It aims at providing the loading device which can do.

  In order to achieve the above-mentioned object, the present inventors diligently studied a mechanism by which the loading device can quickly move to a position suitable for loading. The present invention has been made as a result, and the gist thereof is as follows.

(1) A hopper that accommodates a load, a feeder that is disposed below the hopper and that carries the load to a relay conveyor, a relay conveyor that conveys the load that the feeder carries to the load conveyor, and a relay conveyor In the loading device provided with a loading conveyor for loading the load to be transported into the hold of a large ship,
(X) The feeder is provided with a self-propelled / traction mechanism having a height adjusting mechanism for adjusting the height of the feeder at a lower center portion, and is rotatably connected to a relay conveyor.
(Y) The relay conveyor is provided with a self-propelled / traction mechanism having a height adjusting mechanism for adjusting the height of the relay conveyor at a lower center portion, and is rotatably connected to the loading conveyor.
(Z) The loading conveyor has a height / angle adjustment mechanism for adjusting the height, elevation angle or depression angle, and turning angle of the loading conveyor at a connecting portion with the relay conveyor. A large-sized ship loading device comprising a traction mechanism.

  (2) The loading device for a large ship according to (1), wherein the loading conveyor includes a chute mechanism that adjusts a dropping trajectory of the loaded material at a tip.

  (3) The loading device for a large vessel according to (1) or (2), wherein the load is a granulated slag.

  (4) The loading device for a large ship according to any one of (1) to (3), wherein the loading conveyor has a structure that can be bent at a central portion.

  (5) The large-sized ship loading device according to any one of (1) to (4), wherein the self-propelled / traction mechanism includes a wheel or an endless track.

  (6) The large-sized vessel loading according to any one of (1) to (5), wherein the self-propelled / traction mechanism includes a cab capable of operating a height / angle adjustment mechanism. apparatus.

  (7) The large-sized vessel loading device according to any one of (1) to (6), wherein a dump approach is disposed adjacent to the hopper.

  (8) The large-sized vessel loading device according to any one of (1) to (7), wherein a pipe is attached inside the hopper along the rotation direction of the feeder.

  Since the loading device of the present invention can quickly move to a position suitable for loading on the quay, the load such as granulated slag is kept in the hold of a large vessel that has berthed while maintaining the balance of the vessel, Can load efficiently.

FIG. 10 illustrates one embodiment of the present invention. It is a figure which shows the aspect which carries out the load with a feeder from a hopper. (A) shows a normal carrying-out aspect, (b) shows a preferable carrying-out aspect. It is a figure which shows another aspect of this invention. It is a figure which shows the change of a loading position. It is a figure which shows a chute mechanism. It is a figure which shows another chute mechanism. It is a figure which shows another chute mechanism.

  The loading device of the present invention basically includes (a) a hopper that accommodates a load, (b) a feeder that is disposed at a lower portion of the hopper, and carries the load to a relay conveyor, and (c) a feeder. A relay conveyor for transporting the load to be transported to the load conveyor, and (d) a load conveyor for loading the load to be transported by the relay conveyor into the hold of a large ship.

  Hereinafter, the present invention will be described based on the drawings. In FIG. 1, the aspect which expanded the loading apparatus of this invention linearly is shown.

  A dump approach 1 that determines the unloading position of the dump truck 3 is disposed on the quay y adjacent to the hopper 4 that receives a load z of about 30 t that is input from one dump truck 3. The hopper 4 has an integrated structure including a feeder 6 at the bottom.

  Since the dump approach 1 includes the wheels 2, the tip 1 ′ of the dump approach can be pulled by the towing vehicle and moved to the moved hopper 4. In addition, although the tow type movement system was shown in FIG. 1, you may employ | adopt a self-propelled movement system.

  The load z in the hopper 4 is carried out to the relay conveyor 7 by the feeder 6 disposed at the lower part of the hopper 4.

  FIG. 2 shows a mode in which a load (about 30 t) is carried out from the hopper by a feeder. FIG. 2A shows a normal carry-out mode, and FIG. 2B shows a preferred carry-out mode. 2A, the feeder 6 has a vertical load g1 of all the loads in the hopper 4 and a wall friction load g2 on the lower side surface of the hopper 4. In FIG.

  Since the vertical load g1 and the wall friction load g2 increase in proportion to the weight of the load and the cutting speed, the feeder 6 must be enlarged in order to load a large amount and quickly. However, in order to quickly move the loading device, the hopper integrated with the feeder is preferably small and lightweight.

  Therefore, as shown in FIG. 2B, a load 4 (vertical load load g1 + wall surface) applied to the feeder 6 without reducing the carry-out amount by attaching a pipe 4z in the hopper 4 in parallel with the feeder 6. It is preferable to reduce the friction load g2). By reducing this load load, it is possible to reduce the size of the feeder 6 and further reduce the weight of the frame of the hopper 4 in which the feeder 6 is integrated.

  That is, for example, a pipe 4z having an outer diameter of about 20% of the width W of the hopper 4 is placed on the feeder 6 at a position of about 25% of the width W of the hopper 4 from the upper surface of the feeder 6. By attaching them in parallel, the vertical load g1 applied to the feeder 6 by the pipe 4z is reduced (see the distribution of ↓ in FIG. 2 (b)), and the wall friction load g2 with respect to the cutting direction is also reduced. The load can be carried out smoothly and stably without trouble such as hanging from a shelf.

  As shown in FIG. 1, the feeder 6 includes a wheel 5 at a lower center portion and is rotatably connected to the relay conveyor 7, so that the feeder 6 moves following the movement of the relay conveyor 7. The wheel 5 has a function of adjusting the height of the feeder 6 (for example, a hydraulic cylinder or the like). The height of the end on the relay conveyor side is set to the height of the end of the relay conveyor 7 at the lower center of the feeder 6. Adjust to match the height.

  The relay conveyor 7 includes a self-propelled / traction mechanism 10 having a height adjusting mechanism 12 (for example, a hydraulic mechanism) that adjusts the conveyor height at the center lower part, and is rotatably connected to the loading conveyor 8. Yes. The self-propelled / towed mechanism 10 may be of any mechanism and power source, but preferably has an endless track having a steering function in order to pull the hopper 4 and the feeder 6.

  The height adjusting mechanism 10 adjusts the height of the end connected to the loading conveyor 8 of the relay conveyor 7 so as to match the height of the end of the loading conveyor 8. The relay conveyor 7 can be lowered to the position of the relay conveyor 7 ′ as the end of the loading conveyor 8 is lowered.

  The connecting portion between the relay conveyor 7 and the loading conveyor 8 is a rotatable self-propelling / traction mechanism having a height / angle adjustment mechanism 13 for adjusting the height, elevation angle or depression angle and turning angle of the loading conveyor 8. 11 is supported.

  Although the self-propelled / traction mechanism 11 may be of any mechanism and power source, it is preferable to have an endless track because it requires traction force for rapid movement.

  As the self-propelled / traction mechanism 11 rotates left and right, the loading conveyor 8 turns left and right, but the turning angle is finally set to an optimum value by the height / angle adjustment mechanism 13.

  The loading conveyor 8 may have a structure that can be folded upward at the center as shown by the loading conveyor 8 ″ in FIG. 1. When the quay is narrow by folding the loading conveyor 8 upward However, it is possible to rotate the loading conveyor without being interfered by obstacles around the quay, such as land structures and berthing ships.

  FIG. 3 shows an embodiment of the present invention when the quay is narrow. In FIG. 3, since the width of the quay y is narrow, the dump approach 1, the hopper 4 and the relay conveyor 7 on which the dump truck 3 is placed are arranged linearly along the large ship 14, and the loading conveyor 8 is The relay conveyor 7 is arranged substantially perpendicularly (substantially perpendicularly to the ship).

  In this invention, since the connection part of the relay conveyor 7 and the loading conveyor 8 is supported by the self-propelling / traction mechanism 11 which can be rotated freely, the arrangement | positioning aspect shown in FIG. 3 becomes possible, and the width of the quay y is narrow. Even so, the load can be loaded into the hold 15.

  In this invention, the arrangement | positioning aspect of a dump approach, a hopper, a relay conveyor, and a loading conveyor is not restricted to the arrangement | positioning aspect shown in FIG.1 and FIG.3. Since the hopper, the relay conveyor, and the loading conveyor are rotatably connected, they can be appropriately arranged depending on the width and shape of the quay. Moreover, since the self-propelled / traction mechanism is provided at the connecting portion between the relay conveyor and the loading conveyor, movement is easy even if the quay is narrow.

  As the cargo is loaded into the hold and the weight of the hold increases, the ship sinks. In particular, in the case of a large ship, it must be sunk while maintaining the equilibrium before and after the ship. Therefore, as shown in FIG. 3, when there are four holds, the four holds 15a, 15b, 15c, and 15d are not concentrated on one hold, considering the weight balance before and after the ship, Need to be loaded.

  In the present invention, since the connecting portion of the relay conveyor and the loading conveyor is supported by a rotatable self-propelled / traction mechanism, movement along the longitudinal direction of the ship is extremely easy. Therefore, the loading device can quickly move to a required position, and can load a plurality of cargoes while maintaining the balance in the longitudinal direction of the ship.

  For example, in FIG. 3, the load is first loaded into the hold 15b, then loaded into the hold 15d, then loaded into the hold 15a, and finally loaded into the hold 15c. According to this loading order, loading is repeated until all the holds are full.

  At the time of loading, the tip of the loading conveyor is lowered in accordance with the sinking of the large ship, and the drop trajectory of the loading changes in the width direction of the ship with this lowering. FIG. 4 shows the change in the fall trajectory of the load.

  Initially, the tip of the loading conveyor 8 (loading position of the load) when the cargo hold is loaded on an empty large ship 14a is located at x1, but as the weight of the hold increases, the ship sinks and adjusts to the sinking. Since the tip of the conveying conveyor 8 is lowered to x2, the dropping locus is shifted by the width d.

  When the fall width d of the drop trajectory is large, the load is unevenly distributed in the ship width direction, and the balance of the ship in the ship width direction may not be maintained.

  It is not easy to absorb the shift width d by advancing and retracting the loading conveyor 8. Therefore, as shown in FIG. 1, it is preferable to attach a chute mechanism 9 that adjusts the fall trajectory of the load at the tip of the load conveyor 8.

  By attaching the chute mechanism 9, the fall trajectory of the load can be adjusted arbitrarily, so that the load can be placed in the large hold while maintaining the balance in the front and rear of the ship and in the width direction of the ship during the settlement of the ship. Can be loaded.

  5-7 show a chute mechanism.

  In the chute mechanism shown in FIG. 5, the fall trajectory of the load z conveyed by the loading conveyor is adjusted by moving the chute plate 9 a back and forth around the rotation shaft 18 by the advance and retreat of the cylinder 17. To do.

  That is, when the chute plate 9a is retracted so as not to contact the load z, the load z falls along a natural fall trajectory A. Moreover, if the chute | shoot board 9a is advanced so that the fall of the load z may be interrupted, the load z will fall along the fall locus | trajectory B.

  The chute plate 9a is moved back and forth by the cylinder 17 in accordance with the deviation of the fall trajectory due to the sinking of the ship or the accumulation state of the load z in the ship, and the fall trajectory of the load z is designated as the fall trajectory A. Since the adjustment can be made between the falling trajectories B, the load can be efficiently loaded into the hold while maintaining the equilibrium of the ship.

  FIG. 6 shows another chute mechanism. In the chute mechanism shown in FIG. 6, the chute plate 9a is applied to the back surface of the falling flow of the load z to adjust the fall trajectory A of the load z. Since the chute plate 9a moves back and forth around the rotation shaft 18 as the cylinder 17 advances and retreats, the fall trajectory A can be arbitrarily adjusted.

  FIG. 7 shows still another chute mechanism. In the chute mechanism shown in FIG. 7, the fall trajectory A of the load z is adjusted by the turning chute 9b.

  The chute mechanism employed in the present invention is not limited to the chute mechanism shown in FIGS. The fall trajectory of the load can be arbitrarily adjusted, and various chute mechanisms can be employed in the present invention as long as the object of the present invention is achieved.

  Next, examples of the present invention will be described. The conditions in the examples are one example of conditions used for confirming the feasibility and effects of the present invention, and the present invention is based on this one example of conditions. It is not limited. The present invention can adopt various conditions as long as the object of the present invention is achieved without departing from the gist of the present invention.

(Example)
Under the weather shown in Table 1, granulated slag was loaded on 30000t class ships A to E shown in Table 1. As shown in Table 1, it was possible to load approximately 13000 t of granulated slag per day, regardless of whether the weather was good or not, by greatly reducing the travel time of the loading device.

  Conventionally, loading on a 30000 t class vessel takes about 5 days even if it is performed without holidays, but if the loading device of the present invention is used, it takes about 2.5 days (≈30000 t ÷ 13000 t). The loading can be completed.

  As described above, the loading device of the present invention can quickly move to a position suitable for loading on the quay, so that the load such as granulated slag can be transferred to the hold of a large vessel on the berth. Can be loaded efficiently while maintaining the above. Therefore, the present invention has high applicability in the shipping industry.

DESCRIPTION OF SYMBOLS 1 Dump approach 1 'Tip of dump approach 2 Wheel 3 Dump truck 4 Hopper 4z Pipe 5 Wheel 6 Feeder 7, 7' Relay conveyor 8, 8 ', 8 "Loading conveyor 9 Chute mechanism 9a Chute plate 9b Swivel chute 10, 11 Self Running / towing mechanism 12 Height adjustment mechanism 13 Height / angle adjustment mechanism 14, 14a, 14b Large vessel 15a, 15b, 15c, 15d Ship hold 17 Cylinder 18 Rotating shaft A, B Falling track W Hopper width d Falling track deviation Width g1 Vertical load g2 Wall friction load x1, x2 Loading position y Wharf z Load

Claims (8)

A hopper that accommodates the load, a feeder that is disposed below the hopper and that carries the load to the relay conveyor, a relay conveyor that transports the load that the feeder carries to the load conveyor, and a relay conveyor In a loading device equipped with a loading conveyor for loading a load into the hold of a large ship,
(X) The feeder is provided with a self-propelled / traction mechanism having a height adjusting mechanism for adjusting the height of the feeder at a lower center portion, and is rotatably connected to a relay conveyor.
(Y) The relay conveyor is provided with a self-propelled / traction mechanism having a height adjusting mechanism for adjusting the height of the relay conveyor at a lower center portion, and is rotatably connected to the loading conveyor.
(Z) The loading conveyor has a height / angle adjustment mechanism for adjusting the height, elevation angle or depression angle, and turning angle of the loading conveyor at a connecting portion with the relay conveyor. A large-sized ship loading device comprising a traction mechanism.   The loading device for large ships according to claim 1, wherein the loading conveyor includes a chute mechanism that adjusts a dropping trajectory of the loaded material at a tip.   The loading device for large ships according to claim 1 or 2, wherein the load is granulated slag.   The said loading conveyor has a structure which can be bent in a center part, The loading apparatus for large ships of any one of Claims 1-3 characterized by the above-mentioned.   The large-sized ship loading device according to any one of claims 1 to 4, wherein the self-propelled / traction mechanism includes a wheel or an endless track ring.   The large-sized ship loading device according to any one of claims 1 to 5, wherein the self-propelled / traction mechanism includes a cab capable of operating a height / angle adjustment mechanism.   The large-sized ship loading device according to any one of claims 1 to 6, wherein a dump approach is disposed adjacent to the hopper.   The large-sized ship loading device according to any one of claims 1 to 7, wherein a pipe is attached to the inside of the hopper along a rotation direction of the feeder.

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