JPS597305Y2 - Hopper - dustproof device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hopper dust-proof device in an unloader used when unloading ore, etc.

Unloaders generate dust in a part of the hopper when unloading iron ore, coal, etc., and the dust is scattered around, causing pollution problems.

Conventionally, various methods such as hopper watering, installation of dust collectors, installation of windbreak plates, etc. have been considered and implemented as dustproof measures for the unloader.

However, hopper watering alone cannot completely prevent dust generation, and installing a dust collector in a part of the hopper is more effective at preventing dust generation, but it requires a large amount of money and running costs. Since this is necessary, there are various difficulties involved in implementing this.

Further, the method of installing a windbreak plate on a part of the hopper is simple and relatively dust-proof and useful, but it is not perfect because it encloses only the upper two sides of the hopper.

Incidentally, as shown in FIG. 1, the conventional windbreak plate 1
Because the grab bracket 3 moves in the direction of the arrow above the grab packet 3, it was installed only on both sides of the grab packet 3 in the advancing and retreating direction, so the dust generated in a part of the hopper was blown away by the wind passing between the windbreak plates 1 and 1. It is thought that this was done, reducing the dustproofing effect by half.

This invention was made in view of the above-mentioned conventional problems, and is a review and improvement of the dustproof means using a simple windbreak plate in the conventional technology, and it prevents wind from passing over the hopper. In addition, a windbreak plate is installed on the land side of the hopper to more effectively prevent dust generation as a three-sided enclosure, and the windbreak plate is made to be able to be raised and lowered so that when the grab packet passes over the hopper, the windbreak plate is installed. An anchor is used to secure the passage of the grab trolley by lowering it down, and also to prevent the windbreak plate from being easily tilted and being damaged even if the grab packet collides with the grab packet when the grab trolley runs away, which often occurs in the case of a complete set of grab trolleys. The present invention provides a hopper dust prevention device for a loader.

Hereinafter, this invention will be explained in detail with reference to the embodiments shown in FIGS. 2 to 4.

FIG. 2 is a schematic diagram for explaining the arrangement of the hopper dustproof device of this invention in the entire unloader, and reference numeral 4 in the figure represents a quay, on which the unloader 5 is movably installed.

Reference numeral 6 denotes a ship moored to a quay. Bulk cargo such as iron ore and coal is unloaded from the ship 6 using a grab packet 8 that moves with a grab trolley 7, is dropped into a hopper 9, and then transported to land side A by a belt conveyor 10. It is designed to be transported to and processed.

The hopper 9 has windbreak plates 11 generally installed at the upper end thereof located on both sides of the grab packet 8 in the advancing and retreating direction. 11, and a movable windbreak plate 12, which is the essential part of this invention, is attached to the upper end of the land side A of the hopper 9.

As shown in FIGS. 3 and 4, the movable windbreak plate 12 is connected to the windbreak plate 11. It is a plate-shaped body large enough to cover the land side opening between 11 and 11, and is located at the bottom of the opening and is pivoted by a pin 13 so as to be able to rise and fall freely in the land side A direction.

Then, the windbreak plate 11. A counterweight 14 is installed on the extending portion 12a located on the outside of the movable windbreak plate 11 to support the movable windbreak plate 12 in the upright direction at all times. A protruding lever 15 having an appropriate length is fixed to the movable windbreak plate 12 together with the counterweight 14 about the pin 13.

Moreover, the windbreak plate 11. One end of the rope 24 is connected to the outside of the rope 11,
Windbreak plate 11. Rope sheave 2 attached to the outside surface of 11
Rope sheave 21 attached to the outer surface of 0 and hopper 9
The other end is connected to the weight 22 via the weight 2
2 is a movable windbreak plate 1 with lobes 24 stretched outside the hopper.
2 is encouraged to stand up at all times.

The weight W of the counterweight 14 is used to smooth the rotation of the movable windbreak plate 12 and to reduce the weight W of the weight 22.
It is desirable to have a relationship of W>W, and in that sense, it helps the weight 22 to be stronger.

Reference numerals 16 and 16 indicate windbreak plates 11. This is an electric winch located outside of the hopper 11 and fixed to the upper top plate 17 of the hopper 9. The windings are connected via an attached rope sheave 19, so that the movable windbreak plate 12 can be driven and lowered toward the land side A.

The above-mentioned movable windbreak plate 12, winch 16, rope sheaves 19, 20, 21, and other structural parts are all attached to the hopper body, and the winch drive causes load movement fluctuations to the load cell supporting the hopper body. It has no structure.

To explain the operation of the above-mentioned structure, during normal work, that is, when unloading cargo from the ship 6 using the grab packet 8, the movable windbreak plate 12 stands vertically as shown by the solid line in FIG. and the windbreak plate 11 on the top of the hopper 9,
The land-side opening between 11 and 11 will be closed.

As a result, the upper part of the hopper 9 becomes a three-sided enclosure, and the cargo gripping portion of the grab packet 8 that enters from the sea side opening is surrounded by the enclosure.

During work other than the above, for example, when replacing the grab packet 8,
When loading and unloading the backdozer onto the ship 6,
Since the grab packet 8 must pass over the hopper 9, the rope 18 is moved by the weight 2 by the winch 16.
2 and wind it up, and as shown by the broken line in the figure, the movable windbreak plate 12 is laid down horizontally to the land side A, and the opening is opened.

After the grab packet 8 has passed, in order to return the movable windbreak plate 12 to its original upright state, the winch 16 is reeled back and the rope 18 is let out. 12 rises and returns to the position indicated by the solid line in FIG.

On the other hand, in a set of grab trolleys, grab trolley 7
will run on the carter 23 at high speed, but when it rains, the grab trolley 7 will run away for a while and the grab packet 8
may collide with the movable windbreak plate 12.

In this case, when the collision force is smaller than the weight W of the weight 22, the grab packet 8 stops.

Conversely, when the weight W is greater than the weight W of the weight 22, the weight 22 is lifted by the force of the grab packet 8,
The movable windbreak plate 12 is tilted to the position shown by the broken line in FIG.
This allows the grab packet 8 to pass over the hopper 9.

After the grab packet 8 has passed, the weight W of the weight 22 returns it to the original position shown by the solid line in FIG. 3, returning to the normal working state.

The action of the counterweight 14 when the grab packet 8 collides with the movable windbreak plate 12 is as follows.

If the counterweight 14 is not provided,
The weight required to maintain the movable windbreak plate 12 in an upright state is directly required from the weight 22, but the weight required from the weight 22 is reduced by the weight W of the counterweight 14. Since the drag of the movable windbreak plate 12 against the collision force of the grab packet 8 is reduced, the tilting of the movable windbreak plate 12 is promoted smoothly, and the weight W of the weight 22 is reduced as described above.

In the above embodiment, the winch 16, counterweight 14, and weight 22 are provided on both sides of the movable windbreak plate 12, but it is not necessary to provide them on both sides, and it is possible to perform the same effect only on one side. Of course.

As mentioned above, this idea involves attaching a movable windbreak plate to the upper end of the hopper on the land side, which surrounds the upper part of the hopper on three sides and prevents wind from passing from the sea side to the land side. Therefore, the scattering of dust can be extremely reduced.

In addition, by integrally providing a counterweight at the lower end extension of the movable windbreak plate and connecting the weight to the other end of a rope whose one end is fixed to the movable windbreak plate, the weight of the weight can be adjusted to the weight of the counterweight. Because the grab packet is compensated for by It can be prevented.

Furthermore, by providing a winch connected to the movable windbreak plate via a rope at an appropriate location, the movable windbreak plate can be lowered and the grab packet can freely pass over the hopper.

In addition, since the construction is simple, it has excellent effects such as being able to be used as a dustproofing measure at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional hopper with two-sided enclosures;
Fig. 2 is an overall schematic explanatory diagram of an unloader to which this invention is applied, Fig. 3 is a schematic side view of main parts showing an embodiment of this invention, and Fig. 4 is a diagram showing an embodiment of this invention. , A is a front view, the mouth is a side view showing the same essential parts, and C is a plan view of the mouth. 5... Unloader 8... Grab packet, 9... Hopper, 11... Windbreak plate, 12... Movable windbreak plate, 14・・・・・・
Counterweight, 16...Winch, 18
...Rope, 22 ... Weight, A.
...Land side.

Claims (1)

[Scope of utility model registration request] In a hopper used for unloading bulk cargo such as iron ore, coal, etc., a movable windbreak plate is attached to the upper end of the land side of the hopper, and the movable windbreak plate is attached to the upper end of the land side of the hopper. A counterweight is integrally provided at the lower end extension of the windbreak plate, and a weight is connected to the other end of the rope whose one end is fixed to the movable windbreak plate to assist the movable windbreak plate in the upright direction, and to assist the movable windbreak plate in the upright direction. A hopper dustproof device characterized in that a winch connected to a windbreak plate via a rope is provided at an appropriate location, and the movable windbreak plate is lowered and operated by the winch.