JP4051642B2 - Bulk carrier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bulk carrier that is an amorphous solid cargo, and more particularly to a bulk carrier that has an automatic cargo handling facility that is easy to maintain and that does not disperse dust into the atmosphere.
[0002]
[Prior art]
Among bulk carriers that transport irregular solid cargo consisting of loose materials such as ore, coal, limestone, wood chips, cement, etc. The cargo handling equipment often has to berth at the incomplete wharf and unload it. For this reason, the bulk carrier has automatic cargo handling equipment to unload the bulk loaded in the cargo hold. .
[0003]
6 and 7 are diagrams for explaining the outline of the bulk carrier equipped with the automatic cargo handling equipment used for the above-mentioned purpose. FIG. 6 shows the longitudinal direction of the hull constructed in the hull 81. The extended cargo hold 82 is shaped like a hopper, and by rotating the blade 85 while reciprocating the dispenser 84 along the slit-shaped discharge port 83 formed in the bottom, the bulk material is removed from the bottom layer. Sequentially dropped from the discharge port 83 along the ship bottom onto the first conveyor means 86 disposed below the discharge port 83 and sent to the bow side or the stern side, and then transferred to the second conveyor means 87 and transferred to the upper deck 88. Is transferred to the third conveyor means 89 which is further extended toward the wharf and landed at a predetermined location.
[0004]
FIG. 7 shows a scraper 93 and a first conveyor means 94 mounted on a portal-type traveling platform 92 that reciprocates in the longitudinal direction of the hull across the upper deck 88 across the hatch 91 of the cargo hold 82. The bulk material is sent to one side of the hull 81 while taking out the bulk material, dropped onto the second conveyor means 95 installed on the upper deck 88, sent to the bow side, and further extended toward the wharf. It is transferred to the three conveyor means 96 and landed at a predetermined place.
[0005]
6 shows that the cargo hold 82 has a hopper shape, and additionally has a cover body 90 that forms a space for running the dispenser 84, and a first conveyor means 86 is installed below the bottom. Therefore, there is a problem that the effective volume of the cargo hold 82 is small and inferior to the bulk load capacity. On the other hand, the thing shown in FIG. 7 can make the cargo hold 82 into a hopper shape, and can make the bottom approach the ship bottom and make a large effective volume.
[0006]
[Problems to be solved by the invention]
However, the bulk carrier shown in FIG. 7 has an advantage that the bulk load capacity is large. On the other hand, the second conveyor means 95 laid over the entire length of the reciprocating section of the traveling platform 92 has an upper deck. 88 is exposed and exposed to wind and rain and seawater, so rusting and premature deterioration cannot be avoided, and not only maintenance and repair are required, but also from the first conveyor means 94 When the bulk material is dropped and transferred to the second conveyor means 95, the dust is diffused into the atmosphere as it is, which is not preferable in terms of environmental sanitation.
[0007]
The present invention is a bulk carrier as shown in FIG. 7, that is, a scraping means for reciprocating on the upper deck in the longitudinal direction of the hull to take out bulk goods in the cargo hold above the hatch, and take out above the hatch. A transport means having a bulk carrier having transport means for sending bulk material to one place on the bow side or stern side and landing means for sending bulk material received from the transport means to a predetermined location on the wharf. The object is to solve the problems of requiring a lot of labor and cost for maintenance and repair of the two conveyor means 95 and the problem of environmental deterioration due to the atmospheric emission of dust, and has a large loading capacity. It is an object of the present invention to provide a bulk carrier having a cargo hold, which is equipped with an automatic cargo handling facility that is easy to maintain and hardly deteriorates the environment.
[0008]
[Means for Solving the Problems]
That is, in order to solve the above problems, the present invention is a first conveyor that is installed below the upper deck and extends in the longitudinal direction of the hull in the side gap between the hull and the cargo hold, In order to deliver the bulk material from the first conveyor to the landing means installed above the upper deck, the second conveyor is installed extending from the lower side to the upper side of the upper deck. A guide passage is provided on one side of the cargo hold over almost the entire travel section of the scraping means, and a guide passage that allows opening and closing of the charging end for dropping the bulk material taken out by the scraping means onto the first conveyor is provided. The part extending above the upper deck of the two conveyors was built in a housing built on the hull.
[0009]
By doing so, the transportation means that delivers the bulk material taken out above the upper deck by the scraping means to the landing means is arranged inside the hull, and it is not exposed to wind and rain or seawater, so maintenance and repair labor It has become possible to greatly reduce costs, avoid premature deterioration, and almost eliminate dust emission to the atmosphere.
[0010]
In addition, according to the present invention in which the dust generated when the bulk material is introduced from the scraping means into the guide passage is collected by the dust collector, the atmospheric emission of the dust can be further reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 schematically showing an embodiment of the present invention, a cargo hold 2 extending in the longitudinal direction of the hull from near the bow to near the stern in the hull 1 is divided into two front and rear by an intermediate partition wall 3. The cargo hold 2 is opened by a hatch 4 provided on the upper deck 5. Further, the winder machines 7a and 7b of the hatch covers 6a and 6b for opening and closing the bow half and the stern half respectively defined by the partition wall 3 of the cargo hold 2 are brought close to the front and rear ends of the cargo hold 2. It is installed on the upper deck 5. Further, a bridge 8 is installed on the stern side of the winder 7b on the stern side.
[0012]
1 and 2, A indicates scraping means, B indicates transport means, and C indicates landing means. The scraps scraped from the cargo hold 2 while the scraping means A moves in the vertical direction of the hull are shown in the hull. It is sent to the landing means C installed near the bow by the conveying means B extending in the longitudinal direction, and then landed at a predetermined location on the wharf.
[0013]
The scraping means A mainly refers to FIGS. 3 and 4 and rides on a traveling rail 11 positioned on both sides of the cargo hold 2 and laid on the upper deck 5 in the longitudinal direction of the hull. A bucket-shaped traveling platform 12 that reciprocates over the entire length, and a bucket that is suspended from a carriage 14 that reciprocates on a guide rail 13 that extends in the width direction of the hull, that is, the hatch crossing direction, laid on the traveling platform 12. It comprises a scraping machine 15 made up of a conveyor, a transfer conveyor 20 made up of a belt conveyor installed in the carriage 12 and extending in the cross-hatch direction, and a supply chute 21 extending down.
[0014]
The bucket conveyor which is the scraping machine 15 is a well-known conveyor in which a large number of buckets are installed on two parallel endless chains at regular intervals. The terminal reverse chain wheel 16a supported by the carriage 14 is guided in the middle. A chain 16b, a guide rail 16c, a first arm member 17a that is rotatably connected to each other, and a tip inverted chain wheel 16d that is supported at the tip of the first arm member 17a of the second arm member 17b, are provided at these connecting points. An endless chain is engaged with a second bending wheel 16f provided at a position where the base ends of the first bending wheel 16e and the second arm member 17b are rotatably connected to the carriage 14, and is shown counterclockwise in FIG. It is run and circulated by the prime mover that does not. In addition, the cylinder cylinder base end and the piston rod tip of the fluid pressure cylinder, which is the expansion / contraction member 18, are coupled to the center of each of the two arm members 17a and 17b.
[0015]
This bucket conveyor is maintained in a horizontal state between the tip-reversing chain wheel 16d and the first bending chain wheel 16e to form a first scraping portion 15a for scraping loose materials mainly on a horizontal plane. A second scraping portion 15b is formed between the wheel 16e and the second bent chain wheel 16f so that the inclination angle is arbitrarily variable between the vertical state and the horizontal state, and scrapes are mainly scraped on the inclined surface. ing. Further, a carry-out portion 15c extending upward in the vertical state is formed between the second bent chain wheel 16f and the terminal reverse wheeled wheel 16a, and the bucket faces downward between the reverse wheeled wheel 16a and the guide wheel 16b. As a result, the bulk material is dropped and delivered from the bucket conveyor.
[0016]
FIG. 4 shows a state in which the expansion / contraction member 18 is in a substantially intermediate extended state, and the second scraping portion 15b has an inclination angle of approximately 45 degrees. In this posture, the loose material is separated into two scraping portions 15a. , 15b. Fully loaded bulks in the cargo hold 2 start scraping with the second scraping portion 15b in a substantially horizontal state, gradually tilting it and moving the carriage 12 back and forth in the longitudinal direction of the hull and crossing the carriage 14 across the hatch. The operation of scraping the loose material continuously is performed by appropriately adding the operation of reciprocating in the direction. Then, as the looseness in the cargo hold 2 decreases, the inclination angle of the second scraping portion 15b is increased, and finally this portion 15b is brought into a vertical state. At this time, the length of the second arm member 17b and the height position of the second bent chain wheel 16f are set so that the bucket of the first scraping portion 15a substantially contacts the bottom wall 2a of the cargo hold 2. Thereby, the bottom of the cargo hold 2 can be carried out.
[0017]
Since the endless chain of the bucket conveyor and the chain wheels 16d and 16e to be taken in and out of the cargo hold 2 are arranged on both outer sides of the bucket, the bucket is placed between the side wall 2b and the bottom wall 2a of the cargo hold 2. I can't hit it, and I can't scrape the bulk of this part. Accordingly, in the illustrated embodiment, the portion outside the hull width direction movement limit 15A of the bucket shown in FIG. 3 is the inclined wall 2c, and the loose material falls into the bucket travel region and is scraped out with little remaining. I was able to. Since the inclined wall 2c has a slight height, a decrease in the volume of the cargo hold 2 can be ignored.
[0018]
The second bending chain wheel 16f also has a height that does not collide with the winder 7b when the traveling arm 12 and the scraper 15 are placed in the storage space 10 to be described later with the second arm member 17b in a horizontal state. In the embodiment, the hatch cover 6b is extended and installed at a height position that does not collide with the winding shaft of the winding machine 7b that is empty. Therefore, when opening the hatch 4 for loading and unloading, the scraper 15 is moved above the hatch 4 so as not to hinder the winding of the hatch cover 6b to the winder 7b. When loading is completed and the hatch 4 is closed, the carriage 12 and the scraper 15 are moved to the storage space 10.
[0019]
When unloading, from the posture in which the second arm member 17b is positioned horizontally above the opened hatch 4 and is in a horizontal state, the front side is closer to the guide rail 16c of the bucket conveyor and the second bent chain wheel 16f. This part is rotated and lowered, and the bulk material of the cargo hold 2 is scraped off from the surface layer part by the bucket.
[0020]
When the scraping of the loose material is finished, the two arm members 17a and 17b are rotated and raised while increasing the mutual opening angle by extending the telescopic member 18, and the second arm member 17b returns to the horizontal state. . In this way, by allowing the lower part of the bucket conveyor to be raised and lowered, it can be taken in and out of the cargo hold 2 from above the hatch 4, and in addition, the lower part is made into scraping portions 15 a and 15 b that are further bent with respect to each other. According to the form, it can be scraped out with almost no loose material.
[0021]
The bulk material scraped by the bucket and transported upward is released from the bucket when it is reversed along the terminal reverse chain wheel 16a, falls on the transfer conveyor 20 through the chute 19, and falls on the carriage 12. Sent to one end. The reversal point of the conveying end of the conveyor 20 is installed at the upper end portion of the supply chute 21, and the loose material scraped while the bucket conveyor 15 moves in the longitudinal direction and the width direction of the hull is put into the supply chute 21.
[0022]
A suction port of a dust collector 22 installed on the traveling platform 12 is opened at the lower end of the supply chute 21 so that dust generated from falling bulk material is not diffused into the atmosphere. Further, the carriage 14 includes a housing 23 surrounding the bucket conveyor guide rail 16c, the second bent chain wheel 16f and the transfer conveyor 20, and is considered so as to minimize dust scattering. ing.
[0023]
Further, the upper deck portion between the hatch 4 and the bridge 8 and on one side of the bridge 8 forms a storage space 10 for the scraping means A, and the hatch 4 is covered with the hatch covers 6a and 6b and loaded. When not loading or unloading, the carriage 12 is positioned between the hatch 4 and the bridge 8 and the two scraping portions 15a and 15b of the scraper 15 are positioned on the side of the bridge 8. It has become.
[0024]
In this way, by placing the scraping means A provided on the upper deck 5 along the back surface and one side surface of the bridge 8, the view from the bridge 8 is not obstructed during navigation. Further, two scraping portions 15a and 15b which are provided in a horizontal state with a wall or a roof provided on one side portion of the storage space 10 can be inserted and protected from waves and rainwater.
[0025]
Next, referring to FIGS. 1, 2, 3, and 5, the conveying means B is along the side of the cargo hold 1 side of the second deck 9 provided in the gap between the hull 1 and the cargo hold 2. Installed in the front part of the cargo hold 2, the first conveyor 27 composed of a belt conveyor installed in the direction of the hatch 4, the elongated groove-shaped guide passage 28 provided along the one side end of the hatch 4 over the entire length of the cargo hold in the longitudinal direction. And a second conveyor 29 comprising a belt conveyor.
[0026]
The first conveyor 27 extends from the vicinity of the stern side end of the cargo hold 2 to the front side of the bow side end surface, and the lower end outlet of the supply chute 21 approaches the upper end inlet of the guide passage 28. For this reason, the bulk material scraped from the cargo hold 2 while the scraping means A moves in the longitudinal direction of the hull is fed into the guide passage 28 regardless of the position of the scraping means A, and remains as it is without stagnation. 27 can be dropped.
[0027]
The upper end inlet, that is, the input end of the guide passage 28 may be opened to the outer side of the hatch 4, but when opened to the inner side of the hatch 4 as in the illustrated embodiment, the width of the hatch covers 6 a and 6 b It can be opened and closed simultaneously with the hatch 4 without changing the dimensions. Then, by covering the input end of the guide passage 28 with the hatch covers 6a, 6b or appropriate means, in combination with the fact that the first conveyor 27 is installed below the upper deck 5, There is no need to worry about rusting or breakdown of equipment due to these adhesions.
[0028]
The second conveyor 29 has the same configuration as a well-known vertical belt conveyor in which two endless belts 29a and 29b face each other and bulk material is enclosed and conveyed from a low place to a high place. In the illustrated embodiment, it is installed in the bow side gap between the hull 1 and the cargo hold 2 so as to be inclined in the hull width direction. That is, the lower delivery end is positioned below and perpendicular to the delivery end of the first conveyor 27, and the higher delivery end is located above the upper deck 5 on the opposite side in the width direction of the hull. .
[0029]
Thus, by using the narrow space in the hull 1 and being inclined and installed in the width direction of the hull, the length of the conveyor machine becomes shorter than that of the configuration composed of the horizontal portion and the vertical portion, and the loose article Can be efficiently transported without worrying about leakage. The second conveyor 29 receives the bulk material fed from the first conveyor 27 at one of the belts 29a at the feeding end, and then the other belt 29b is faced to each other and both side edges thereof are overlapped and closed. The loose material is enclosed and conveyed to a high place according to the inclined conveyance path, and is sent out at the belt reversal point, that is, the sending end of the high place.
[0030]
Moreover, the part which protrudes upwards from the upper deck 5 of the 2nd conveyor 29 is made to protrude on the upper deck 5, and is built in the housing 30 constructed | assembled in the hull 1, and while these are protected from a rain and seawater, It does not enter the hull 1.
[0031]
The landing means C is a cantilever boom 33 having a base end attached to a swivel base 32 installed on the upper deck 5 at one side end near the bow with reference to FIGS. 1, 2, and 5. The boom 33 is provided with a landing conveyor 34 including a belt conveyor installed over almost the entire length of the boom 33, and a fluid pressure cylinder 35 for raising and lowering the boom 33.
[0032]
That is, the boom 33 is retracted along the pier side above the upper deck 5 and can be turned to project toward the pier when unloading. In order to cope with the fluctuations, undulation is possible, which is the same as the conventional one.
[0033]
The delivery end of the landing conveyor 34 is positioned below the delivery end of the second conveyor 29, and the bulk material delivered from the second conveyor 29 passes through the chute 36 and is delivered to the landing conveyor 34. The landing is completed by dropping to the end and then dropping from the delivery end at the tip of the boom 33 to a predetermined location on the wharf.
[0034]
The boom 33 has a housing 37 that surrounds the landing conveyor 34. The housing 37 functions as a covering structure that protects the landing conveyor 34 from wind and rain and seawater in the same manner as the housing 30 that encloses the upper upper portion of the second conveyor 29 disposed outside the hull.
[0035]
The transfer conveyor 20, the first conveyor 27, and the landing conveyor 34 are not limited to belt conveyors, and slat conveyors, screw conveyors, and the like can be used.
[0036]
【The invention's effect】
As described above, the scraping means is reciprocated in the longitudinal direction of the hull, and the bulk material is taken out from the hatch, transported to one place on the bow side or stern side, and landed to increase the effective volume of the cargo hold. In a large bulk carrier, according to the present invention, the conveying means extending in the longitudinal direction of the hull is built in the space below the upper deck and the housing built above the upper deck. According to the present invention, the two conveyors constituting the conveying means are in the atmosphere. To eliminate the inconvenience of being exposed to wind and rain and seawater, causing rusting, failure, and early deterioration, greatly reducing maintenance and repair labor and expenses, and operating in good condition at all times. Can do.
[0037]
In addition, the built-in carrier means hardly disperses dust into the atmosphere and can prevent environmental deterioration. By installing a dust collector, dust pollution is more effectively prevented. can do.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing an embodiment of the present invention.
FIG. 2 is a schematic plan view of the embodiment of FIG.
3 is an enlarged sectional view taken along line XX in FIG.
4 is a cross-sectional view taken along line YY in FIG. 3;
FIG. 5 is an enlarged cross-sectional view taken along the line ZZ of FIG.
FIG. 6 is a schematic sectional view showing a conventional example.
FIG. 7 is a schematic cross-sectional view showing another conventional example.
[Explanation of symbols]
1 hull, 2 cargo hold, 4 hatch, 5 upper deck, 6a, 6b hatch cover, 8 bridge, 9 second deck, 10 storage space, 12 platform, 15 scraper, 20 transfer conveyor, 21 supply Chute, 27 first conveyor, 28 guide passage, 29 second conveyor, 30 housing, A scraping means, B transport means, C landing means,

Claims (3)

Scraping means for reciprocating on the upper deck in the longitudinal direction of the hull to take out the bulk material in the cargo hold above the hatch, and conveying means for sending the bulk material taken out above the hatch to one place on the bow side or stern side; , In a bulk carrier having landing means for sending the bulk material received from the transport means to a predetermined part of the wharf,
The conveying means is disposed below the upper deck and in a side gap between the hull and the cargo hold and extends in the longitudinal direction of the hull, and extends from below to above the upper deck. A second conveyor that delivers the bulk material received from the first conveyor to the landing means installed above the upper deck;
Then, the bulk material provided on one side of the cargo hold over almost the entire travel section of the scraping means is thrown from the upper end inlet that can be opened and closed and dropped onto the first conveyor. A guide passage to be made and a housing built in the hull and incorporating a portion extending above the upper deck of the second conveyor,
This is a bulk carrier. In the bulk carrier according to claim 1,
It has a dust collector that collects dust generated when throwing out the bulk material taken out by the scraping means into the guide passage.
This is a bulk carrier. The bulk carrier according to claim 1 or 2, wherein the means for closing the upper end entrance of the guide passage is a hatch cover of the cargo hold.

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