JPH0810574Y2 - Granular sea surface fall prevention device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is used to grab granular materials such as iron ore, coal, ballast, and slag with a grab bucket of an unloader for loading and landing. The present invention relates to a particulate matter sea surface fall prevention device for preventing leaked particulate matter from falling between the hull and a quay into the sea.

[Conventional technology]

In many cases, the above-mentioned granular material transported by ship is grabbed and unloaded by a grab bucket of an unloader.

At this time, the particulate matter leaks from the grab bucket and falls into the sea, causing the seawater contamination and the like.

In order to prevent the particulate matter from falling into the sea, for example, there is a cargo fall prevention device proposed in Japanese Utility Model Laid-Open No. 63-117697. This will be described with reference to FIG.

In FIG. 5, 1 is a hull, 2 is a cargo, 3 is a quay and 5
Is a carriage of a cargo drop prevention device, 6 is a take-up roller, 7 is a screen, 8 is an upper support rod, 9 is a lower support rod, 10 is a roller, 11 is a manual screen take-up handle having a rotation preventing function, 12a and 12b. Is a length adjusting fitting for the support rod 8.9, 13 is a support rod receiver, 14 is a gap between the hull 1 and the quay 3, and 15 is the sea surface.

In such an apparatus, when used, the inner rod of the upper support rod 8 is fixed by the pull-out length adjusting fitting 12a, and the inner rod of the lower support rod 9 is pulled out and fixed by the length-adjusting fitting 12b. The lower support rod 9 is then supported by the support rod receiver 13
Then, the upper support rod 8 and the lower support rod 9 are fixed by holding. The screen 7 is pulled out from the winding roller 6 and fixed to the tip of the upper support rod 8. In this state, the cargo 2 onboard the ship is unloaded by the grab bucket. Then, when the carry-out work is completed, the screen 7 is moved by the screen winding handle 11.
Is wound around the winding roller 6.

Further, when the equipment is moved to another place during the unloading work, the roller 10 is rotated and moved by pushing the carriage 5. Although not shown, it can be fixed with a stopper.

[Problems to be solved by the device]

As shown in Fig. 5, although the cargo drop prevention device can be moved freely on the ship or on the quay, it does not affect the position of the hull. As the cargo handling machine moves, the sea surface fall prevention device is manually or towed. Since the height position between the hull and the land changes due to the ebb and flow of the tide and changes in the load on the hull, it is necessary to manually move the length adjusting bracket 12
a and 12b must be adjusted, which is complicated, and the cargo handling must be stopped when the sea surface fall prevention device is moved or when the length adjustment fittings 12a and 12b are adjusted in length, which increases the cargo handling time. Met.

It is an object of the present invention to provide a sea surface drop prevention device which does not require manual movement or length adjustment as described above during unloading.

[Means for solving the problem]

The present inventor has found that the above problems can be achieved by installing a sea surface fall prevention device in a cargo handling mobile machine.

The present invention was made based on this knowledge, and the means is to grab iron ore, coal, and slag with a grab bucket to load the granules, and load the unloader for landing to the bottom end of the granule fall prevention plate. In the device for preventing the fall of sea surface of particulate matter provided so that it can be lifted up and down in the direction of loading and unloading side, a hard hanging screen having a counterweight at the lower end is suspended at the tip of the granular matter fall prevention plate, and the granular matter fall prevention plate is suspended. The lower end of the screen support frame is provided on the granular material fall prevention plate so that it can be lifted up and down in the lower position of the granular support for loading and landing, and a hard tip having a counterweight at the lower end at the tip of the screen support frame. The hanging screen is wrapped around the lower part of the upper screen and suspended, and the unloader, the granular material fall prevention plate, and the screen support frame are sequentially connected by a chain. And, further, it is the concatenation of the screen support frame wire or chain hoist device fixedly provided on the unloader.

〔Example〕

The operation and one embodiment of the present invention will be described with reference to FIGS.

In the figure, 31 is a hull that carries or transports ore 32 as a granular material, 33 is a seaverse, 34 is a grab bucket of an unloader as a cargo handling machine movably provided on the seaverse 33, and X is an ore fall prevention device. This is an ore fall prevention plate 35 that can be lowered by laying an iron plate on the entire surface within the width of the ore falling range (about 10 m) and rotatably providing the lower end thereof to the cradle B of the unloader. The first hard rubber screen with the upper end fixed over the width direction of the ore fall prevention plate 35 and the lower end provided with a counterweight W1.
36 and the ore fall prevention plate 35 have the same width, and the lower end of the ore fall prevention plate 35 is rotatably provided on the ore fall prevention plate 35, so that the U-shaped screen support frame 37 can be lifted and the upper end is screen supported. A second hard rubber member that is fixed over the width direction of the front end of the frame 37 and is provided with a counterweight W2 at the lower end.
Screen 38, the ore fall prevention plate 35 and the same width as the screen support frame 37 and the same U-shaped screen support frame 39 that can be lifted, and the upper end across the width of the tip of the screen support frame 39. A hard rubber third screen 40 that is fixed and hung with a counterweight W3 at the lower end, a winding drive device 41 that winds and rewinds a wire 42 that is connected to a screen support frame 39, and an unloader mount B, the ore fall prevention plate 35, the screen support frame 37, and the screen support frame 39 are sequentially connected, and the ore fall prevention plate 35, the screen support frame 37,
Each of the screen support frames 39 is composed of connecting chains 43a, 43b, 43c that can be tilted up to about 20 degrees, and a conveyor belt 44 that receives the ore that has slid down the ore fall prevention plate 35 and conveys it.

A case where the ore drop prevention device X having the above-described configuration is used will be described with reference to FIG.

When the hull 31 berths on the sea berth 33, the hoisting drive device 41 is driven to rewind the wire 42 in order to tilt the ore drop prevention device X.

As a result, first, the ore drop prevention plate 35 starts rotating about the pedestal B of the unloader as a fulcrum, and the tilting stops when the connecting chain 43a is stretched. When the tilt of the ore fall prevention plate 35 stops, the screen support frame 37 then starts to rotate around the connection part with the ore drop prevention plate 35 as a fulcrum, and the tilt stops when the connecting chain 43b is stretched. To do. At this time, the tip of the screen support frame 37 is in contact with the lower portion of the first screen 36.

Further, the screen support frame 39 is the screen support frame 37.
When the tilting of the screen is stopped, the screen is tilted like the screen support frame 37.

Thus, when the ore drop prevention device X is tilted as shown in FIG. 4 (A), the unloading of the ore 32 in the hull 31 is started by the grab bucket 34. During the unloading, the ore 32 overflows. Ore 32 is an ore fall prevention device X
Of the ore fall prevention plate 35, the first screen 36, the second screen 38, and the third screen 40, and slides on the hull 31 or the conveyor belt 44.

At this time, the screens 36, 38, 40 are provided with counterweights W1, W2, W3 at the lower ends, and since they are hard rubber, they do not deform with the ore 32 that has fallen and do not vibrate due to wind. , Grab bucket smoothly
Ore 32 overflowing from 34 can be guided.

Thus, when the unloading proceeds and the ore 32 decreases in the hull 31 (or when the seawater is completely dried), the hull 31 floats and enters the state shown in FIG. 4 (B).

As the hull 31 floats, the hoisting drive device 41 is driven to wind up the wire 42, and the screen support frame 39, the screen support frame 37, and the ore fall prevention plate 35 are raised to any positions to prevent the ore fall prevention device. X is brought to the state shown in FIG. 4 (B).

This shields the space between the sea berth 33 and the hull 31 to prevent the ore 32 from falling into the sea.

When the ore drop prevention device X is raised, the screen 36,
Since the screens 38, 40 are not caught by the screen support frames 37, 39 and rolled up, the screen support frames 37, 39 can be smoothly operated.

Further, although the screen support frame is provided in two stages in the above-mentioned embodiment, the present invention is not limited to this and may be one stage or three stages.

The tilt angles of the screen support frame and the ore fall prevention plate 35 naturally change according to the number of screen support frames installed.

Further, in order to collect the ore 32 that has slid down the ore fall prevention plate 35, a belt conveyor 44 is provided in this embodiment, but instead of this, a hopper (not shown) for recovering the ore fall is provided.
May be provided.

[Effect of device]

The present invention eliminates the need to manually move and adjust the length of the ore fall prevention device during the loading and unloading work of granular materials, thus improving safety. Further, since the continuous cargo handling work can be performed, the cargo handling work time can be shortened, and the effect of this field is great.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG.
FIG. 3 is a side view showing the storage state of FIG. 1, FIG. 4 (A) and (B) are schematic views showing the use state of FIG. 1, and FIG. It is the schematic which shows an example. 31 is a hull, 32 is an ore, 33 is a seaverse, 34 is an unloader grab bucket, 35 is a granular material (ore) fall prevention plate,
36 is the first screen, 37 is the screen, 38 is the second screen, 39 is the screen support frame, 40 is the third screen, 41
Is a hoisting drive device, 42 is a wire, 43a, 43b and 43c are connected chains, 44 is a conveyor, B is a stand, W1, W2 and W3 are counterweights, and X is a granular material (ore) drop prevention device.

Claims (1)

[Scope of utility model registration request] Claims: 1. Grabbing with a club bucket to load granular materials,
In the unloader for landing, the lower end of the granular material fall prevention plate is loaded on the granular material, and in the granular material sea surface fall prevention device that can be elevated in the landing side direction, a hard hanging screen with a counterweight at the lower end is used. Suspended at the tip of the particulate matter fall prevention plate, at a position below the particulate matter fall prevention plate,
Further, the lower end of the screen support frame is provided on the granular material fall prevention plate so that the granular product can be loaded and unloaded and lifted up laterally, and a hard drooping screenon having a counterweight at the lower end is provided at the tip of the screen support frame. Along with hanging the lower part of the upper hanging screen and hanging it, the unloader, the granular material fall prevention plate, and the screen support frame are sequentially connected by a chain, and further, the wire of the hoisting device fixed to the unloader or A granular material sea surface fall prevention device, wherein the screen support frame is connected to a chain.