JPS6228609Y2 - - 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. This had the disadvantage of being inefficient, as it required the use of bulldozers and other tools to scrape it into the center of the ship's 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. 1 a), (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 devices are required, which makes it complicated, and in particular, the drive device k of the raking device needs to 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 aims to eliminate all such problems, and includes a scooping tool such as a bucket, which is provided with an endless row of scooping tools extending in the vertical direction using a flexible body, and a scooping device that surrounds the row of scooping tools. A link is pivotally attached to the lower end of the cover for the scooping tool row, a pair of pulleys are provided approximately symmetrically to the pivot point of the link, and the lower part of the scooping tool row is attached to these pulleys so that it is approximately parallel to the link. The present invention is characterized in that the cover is provided with a holding device which allows the lower ends of the row of scoopers to protrude in the lateral direction by sequentially hanging them, and which allows the links to freely escape upwardly and retain them downwardly.

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
The ship 5 rides on rails 3 laid parallel to the rails 3 via wheels 2, and can run in the longitudinal direction of the ship 5 along the rails 3. It is rotatable and can be raised and lowered by a raising and lowering device 8. A loading device 9 is rotatably attached to the tips of the booms 6 and 6' via a rotating device 10, and a chute provided at the center of rotation of the boom 6 is used to store the bulk materials unloaded by the loading device 9. A belt conveyor 12 is incorporated to transport the chute 11.
A belt conveyor 13 and a chute 14 are provided at the end of the belt conveyor 13 below.
The loose objects are allowed to fall through the chute 14 onto a belt conveyor 15 installed parallel to the unloader running direction.

Next, the unloading device 9 will be described in detail with reference to FIG.

First, second, and third pulleys 17, 18, and 19 are sequentially provided on the hopper 16 mounted on the swing device 10 from above, and a drive device 23 is connected to the pulley 17. The turning device 10 includes a cover 2 that extends downward from the hopper 16 and surrounds a row of buckets 31, which will be described later.
A fourth pulley 20 and a sixth pulley 22 are pivoted to face each other at the lower ends of 4, and a pin 26 is connected between the pulley 20 and the
Install between 2 and 2. The link 25 is pivotally connected to the cover 24 via the pin 26 at one end, and the fifth pulley 21 is pivotally connected to the other end, so that the link 25 and the fifth pulley 21 can rotate in the same vertical plane. Configure. Furthermore, a flexible body 3, which will be described later, is hung around the pulley 21.
The pulley groups 20, 21, 22 and link 2 are arranged so that the length of 0 will hardly change even if the angle of link 25 changes.
Determine the pivot position of 5.

A winding device 27 is attached to the lower end of the cover 24, near where the fourth pulley 20 is attached.
7 and the link 25 are connected by a cable 28, and the winding device 27 is appropriately adjusted so that the link 25 extends laterally and the shape of the unloading device 9 becomes approximately L-shaped.

Pulley groups 17, 18, 19, 2 provided as described above
As shown in FIG. 2, a row of buckets 31 consisting of a large number of buckets 29 connected endlessly by a flexible body (a chain in this embodiment) 30 is placed between the buckets 0, 21, and 22.

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

The unloading device 9, which was initially positioned above as shown by the two-dot chain line in FIG. 2, is installed on the upper surface of the cargo hold by operating the unloader 1. In this state, if the bucket row 31 is driven in the direction of the arrow A, the bulk materials are excavated and unloaded onto the belt conveyor 12, chute 11,
It is carried out via belt conveyors 13 and 15. When moving the unloading device 9, 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. You can force it. Also, although the hatch 32 of the normal ship 5 is narrower than the hold 33 as shown in FIG.
4 can be continuously excavated and unloaded to every corner of the hold 33. During this unloading operation, the length of the cable 28 is adjusted by driving the winding device 27, and the angle of the link 25 is changed in accordance with the shape and properties of the accumulated cargo 34. Furthermore, only the lower limit of the link 25 is restricted by the rope 28, and it can freely rotate upward, so that the vertical movement of the ship 5 during unloading work can be absorbed by the rotational movement of the link 25. , the unloading device 9 is not subjected to excessive force due to pushing up from the ship 5. When the cargo 34 is running low, the bottom 35 of the ship is reduced as shown below by the two-dot chain line in Figure 2.
At the stage of the top roughing work, the excavated part 36 of the bucket row 31 supported by the link 25 is moved to the bottom 3 of the ship.
5. Loosen the cable 28 so that it rests on top of the cable 28. That is, the excavated portion 36 is in close contact with the ship's bottom 35, and the ship 5
It is possible to effectively perform rough work while swinging up and down in response to the up and down movement of the machine. Furthermore, if the cable is left slack in this way, the excavated portion 36 has a degree of freedom in the vertical direction, so the driver does not have to be careful to make delicate adjustments to the excavation height. Furthermore, depending on the properties of the load, the excavated portion 36 may not be able to dig into the load, but by adding the weight of the excavated portion 36, the digging force can be increased.

Further, as described above, the flexible body 3 supports the link 25.
0, so even if the excavated part 36 swings, a tension device or the like (not shown) can be used to prevent the flexible body 3 from swinging.
If an appropriate tension is applied to the flexible body 30, that tension will be maintained at all times, and the flexible body 30 will not become too sagging. Therefore, the flexible body 30 may become too tensioned and break, or become too slack, causing the row of buckets 31 to vibrate or make noise, or the bucket 31 may wobble due to excavation resistance at the excavated portion 36. There isn't. For this reason, the guiding device for the flexible body 30 only needs to be provided with a pulley at the bent portion of the flexible body 30, and a continuous guide is not required.

Note that the present invention is not limited to the above-described embodiment; (i) the flexible body of the bucket row 31 can be not only a chain but also a rope, a belt, etc.; (ii) the flexible body of the winding device 27 can be used. Instead, it is free,
It is also possible to provide a holding device such as a torque generating device on the lower part at the center of rotation of the link 25 of the cover 24. (iii) Instead of the bucket row 31, a fin belt conveyor, chain conveyor, etc. It goes without saying that various changes may be made without departing from the gist of the present invention.

As described above, according to the present invention, (i) Since the excavation part and the unloading part of the bucket row are continuous, the structure is simple and there is no spillage and dust by requiring only one set of drive devices; (ii) Since the lower ends of the rows are formed so as to extend laterally, it is possible to work in every corner of the hold. (iii) The cover is equipped with a holding device that allows the links to freely escape upwards and retain them downwardly. This allows the inclination of the excavated part to be adjusted according to the stacked shape and properties of the cargo, and when the ship is thrust up, the excavated part rests on top of the cargo or the bottom of the ship and can rise freely, so there is no need to apply excessive force. (iv) By sequentially threading the lower part of the bucket row around the pulley group so that it is almost parallel to the link,
Even when the excavated part of the bucket row swings, the length of the flexible body hardly changes, so there is no excessive tension or sag, and the bucket row does not vibrate and the durability of the flexible body is improved. It has a great effect.

[Brief explanation of drawings]

1A to 1D are explanatory views of a conventional continuous type unloading device, FIG. 2 is an overall view of an embodiment of the present invention, and FIG. 3 is a detailed view of an excavation portion of the present embodiment. 24 is a cover, 25 is a link, 27 is a winding device, 29 is a bucket, and 31 is a row of buckets.

Claims (1)

[Scope of utility model registration request] A scooping tool such as a bucket is provided with an endless row of scooping tools extending in the vertical direction using a flexible body, and a link is pivotally connected to the lower end of a cover for the scooping tool row that surrounds the row of scooping tools, A pair of pulleys is provided approximately symmetrically with respect to the pivot point of the link, and a pulley is provided at the tip of the link, and the lower part of the row of scooping tools is sequentially hung around these pulleys so as to be approximately parallel to the link, thereby creating a scooping tool. A cargo unloading device characterized in that the lower ends of the rows are made to protrude laterally, and the cover is provided with a holding device that freely releases the links upwardly and holds them downwardly.