JPS6320732B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loading device for unloading bulk materials from a ship.

Traditionally, crab bucket type unloaders have been used as machines for unloading bulk materials such as ore and coal from ships, but they generate dust and noise, or cannot reach every corner of a ship's hold with a crab bucket. The disadvantage was that it was inefficient as it required the use of a bulldozer to scrape the water into the center of the hold. As a countermeasure against these problems, various so-called continuous unloaders are being researched and developed, but this type of unloading equipment has a structure that prevents the reaction force caused by the ship's movement from being transmitted to the unloading equipment, and it also prevents loose objects from being scattered in every corner of the ship's hold. It is desirable to have the function of raking. As a continuous type unloading device, (i) the lower part of the bucket elevator g is connected by connecting the bucket e with a wire rope f etc. (Fig. 1a), (ii) a hydraulic cylinder etc. is installed to connect the bucket elevator g with a wire rope f, etc. (Fig. 1b), (iii) provide a device i exclusively for raking in addition to the device h exclusively for vertical transport (Fig. 1c); As a means, a chain conveyor, a conveyor with fins, etc. are formed into an L-shape (FIG. 1d), but each of them has the following drawbacks.

The system shown in FIG. 1A can absorb the reaction force caused by the shaking of the ship, but when the load has a large excavation resistance, the bucket does not dig in, and the wire rope wears out rapidly, making it troublesome to replace the wire rope.
The system shown in Fig. 1b is designed to absorb the reaction force caused by the ship's motion using hydraulic cylinders, etc., but it requires enough force to constantly support the tension of the row of buckets, making it completely free. Can not. Therefore, the structure for removing slack in the upper bucket row, in which a certain amount of thrust force is transmitted to the unloader, becomes complicated. The device shown in FIG. There are problems with spillage, reduced efficiency, and dust generation.
In addition, two systems of drive systems are required, which makes the drive system complicated, and in particular, the drive system k for the raking device must be installed at the bottom of the vertical transport device h, so it is prone to break down due to being covered with loads, and it is not possible to inspect it during work. There are drawbacks.
Moreover, the one shown in FIG. 1d cannot absorb the reaction force caused by the ship's motion. The present invention solves all such problems by supporting a vertically extending cover rotatably around a vertical axis, and pivoting a bendable frame consisting of at least two sections to the lower end of the cover. A bent part holding device is provided at a required position of the cover to freely release each joint of the frame upwardly and hold it downwardly, and the bending angle can be adjusted, and the bent part holding device and each joint are connected to each other. A pair of pulleys connected to each other and facing each other at the lower end of the cover are provided, and pulleys are provided at the tip of the frame and the node of the frame, and scooping tools such as buckets are endlessly connected by a flexible body. The device is characterized in that a row of scooping tools stored in the cover and exposed below the cover is hung around the pulley to form a bent portion that can be bent into two or more stages.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows the state in which the unloader 1 equipped with the unloading device according to the present invention is used. Unloader 1 is quay 4
It rides on rails 3 laid parallel to the ship via wheels 2, and can run along the rails 3 in the longitudinal direction of the ship 5. The pair of upper and lower booms 6 and 6' It can be turned by the raising device 8 and can be raised by the raising device 8. A loading device 9 is rotatably attached to the tips of the booms 6 and 6' via a turning device 10, and the loading device 9 is attached to the boom 6.
A belt conveyor 12 is built in to transport the bulk materials unloaded by the boom 6 to a chute 11 provided at the center of rotation of the boom 6. Below the chute 11, a belt conveyor 13 and a
A chute 14 is provided at the end of the unloader 3, and the loose materials are made to fall through the chute 14 onto a belt conveyor 15 installed parallel to the unloader traveling direction.

Next, the unloading device 9 will be described in detail with reference to FIGS. 3 and 4.

The first
A pulley 17 is provided, and a drive device (not shown) is connected to the pulley 17. Said turning device 10
A cover 23 extends downward from the pot 16.
is attached to the lower end of the cover 23.
The sixth pulley 18 and the sixth pulley 22 are pivoted to face each other. One vertex of the triangular frame 25 is pivotally connected to the pivot point of the sixth pulley 22 via a pin 24, and the third pulley 19 is attached to one of the other two vertices, and the fifth pulley 21 is attached to the other one. pivot. Furthermore, one end of the swing frame 26 is attached to the lower apex of the two apexes with a pin 27.
The triangular frame 25, the swing frame 26, and the pulleys 19, 20, and 21 are configured to be rotatable in the same vertical plane by pivotally connecting the fourth pulley 20 to the other end. The winding devices 28 and 29 are installed near the lower end of the cover 23, and the winding devices 28 and 2
9, the triangular frame 25, and the swing frame 26 are connected by cables 30 and 31, respectively, and the winding device 2
8 and 29 as appropriate so that the unloading device 9 has a substantially L-shape. The pulley group 17 provided as described above,
18, 19, 20, 21, 22, a second row of buckets 34 is formed by connecting a large number of buckets 32 endlessly by a flexible body (in this embodiment, a chain) 33.
Hang as shown in the diagram. Guides 36 are provided as appropriate at the bending portions 35 of the bucket row 34 and at locations where guides are required.
37, and an auxiliary cover 38 is provided as necessary to prevent dust or improve the load scooping effect of the bucket 32.
Install.

Next, the operation of the unloading device 9 according to the present invention will be explained.

The unloading device 9, which was initially positioned as shown by the two-dot chain line in FIG. 2, is brought into contact with the cargo upper surface of the hold by operating the unloader 1. In this state, if the bucket row 34 is driven in the direction of arrow A, the bulk goods are excavated and unloaded and transported via the belt conveyor 12, chute 11, and belt conveyors 13 and 15. Unloading device 9
When moving the hatch 4, the unloader 1 is moved, the booms 6 and 6' are rotated, the booms 6 and 6' are raised and lowered, and the unloading device 9 is rotated.
It can be moved to any position within 0. In addition, although the hatch 40 of the normal ship 5 is narrower than the hold 39 as shown in FIG. It can be excavated and unloaded. During this unloading operation, the winding devices 28, 2
By driving 9, the lengths of the cables 30 and 31 are adjusted, and the angles of the triangular frame 25 and the swinging frame 26 are changed in accordance with the shape and properties of the accumulated cargo 41. Further, these frames 25 and 26 are limited only at their lower limits by the cables 30 and 31, and can freely rotate upward, so that the frames 25 and 26 can prevent the vertical movement of the ship 5 during unloading operations. The unloading device 9 absorbs the force by the rotational movement of the ship 5, thereby preventing the unloading device 9 from receiving excessive force due to being pushed up from the ship 5. When there is little cargo 41 remaining and it is time to perform the work of digging out the bottom of the ship, the excavated portion 43 of the bucket row 34 supported by the triangular frame 25 and the swinging frame 26 is placed on the ship's bottom 42, and the anchor cables 30 and 31 are loosened. In other words, the excavating portion 43 is in close contact with the ship's bottom 42, and can effectively perform bottom-roughing work while moving up and down in response to the up-and-down movement of the ship 5. In this case, the load acting on the ship's bottom 42 is approximately the weight of the excavated portion 43 and will not damage the ship's bottom. If the cables 30 and 31 are left sufficiently slack in this way, the tip of the triangular frame 25 can freely move by the distance H in the vertical direction, so there is no need for the driver to carefully adjust the excavation height. , and depending on the nature of the cargo, the excavated portion 43
However, by adding the weight of the excavated portion 43, the biting force can be increased. Furthermore, the covers 23 and 38 described above are effective in preventing the generation of dust and in terms of soundproofing.

Note that the present invention is not limited to the above-described embodiments; (i) the flexible body of the bucket row can be not only a chain but also a rope, a belt, etc.; (ii) the pulley can be changed to a guide type. (iii) three or more rotatable frames can be provided; (iv) the winding device can be changed to a telescoping device such as a hydraulic cylinder; (v) support for the rotatable frame. A torque generating device that generates free torque on the upper side and torque on the lower side may be provided at the center of rotation of each rotating frame. (vi) The pivot point of the rotating frame and the pivot point of the pulley may not necessarily match. (vii) A slack-removal device may be provided to take up the slack in the row of buckets. (viii) The third pulley 19 is omitted and the row of buckets is replaced with the second row of buckets.
(ix) A belt conveyor with fins may be used instead of the bucket row.
It goes without saying that various changes may be made without departing from the gist of the present invention, such as the possibility of replacing it with a chain conveyor.

As described above, according to the present invention, (i) Since the excavation section and the unloading section of the bucket row are continuous, only one set of drive device is required, and there is no spillage or dust generation, resulting in a simple structure. ii) Since the rows of buckets are formed into an approximately L shape,
(iii) The bottom of the L-shaped bucket row is folded and swings in two or more stages, so the inclination of the excavation part can be adjusted according to the piled shape and properties of the cargo. When pushing up, the excavated part rests on top of the load or the bottom of the ship and can rise freely, so no undue force is generated.When the bottom is scraped, the excavated part moves along the bottom of the ship, resulting in good scooping efficiency.
(iv) The overall structure is simple and the device can be made lightweight, so the load on the tip of the unloader is small, and the uplifting force of the ship is not generated, so the unloader It can exhibit excellent effects such as reducing the overall strength and making it lighter.

[Brief explanation of the drawing]

Figures 1 a to d are explanatory diagrams of a conventional continuous unloading device, Figure 2 is an overall view of an embodiment of the present invention, Figure 3 is a detailed diagram of the excavation part of this embodiment, and Figure 4 is a 3 is a composite view of the A-A arrow view, the B-B arrow view, and the C arrow view in FIG. 3. FIG. 25 is a triangular frame, 26 is a swinging frame, 2
8 and 27 are winding devices, 32 is a bucket belt, 34 is a bucket row, and 35 is a bent portion.

Claims (1)

[Claims] 1 A vertically extending cover is supported so as to be rotatable around a vertical axis, and at least two
A bendable frame consisting of joints is pivotally mounted, and a bending part holding device is provided at a predetermined position of the cover to freely release each joint of the frame upwardly and hold it downwardly, and whose bending angle can be adjusted. A pair of pulleys are provided to connect the bent portion holding device and each of the sections, and a pair of pulleys facing each other are provided at the lower end of the cover, and pulleys are provided at the tip of the frame and the joints of the frame, and a scooping tool such as a bucket is attached using a flexible body. An endlessly connected row of scooping tools is housed in the cover, and the row of scooping tools exposed below the cover is hung around the pulley to form a bent part that can be bent into two or more stages. Unloading equipment.