JPS5840613B2 - Sediment spreading equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention eliminates soil and sand falling in a concentrated manner from the tip of a conveyor.
The present invention relates to a novel dispersion device which enables the dispersion to be carried out in a thin layer on a target surface by substantially uniform dispersion mainly in the direction of the center line of a conveyor.

Conventionally, the soil discharged from the tip of a conveyor is concentrated and discharged with a cross-sectional area equal to that of the state loaded on the belt, and is usually deposited in a mountain shape on the target distribution surface. Even if the turning speed and running speed of the conveyor are increased to make the layer closer to the thin layer, (7) mountain-like accumulation is unavoidable, and this phenomenon causes problems in the following civil engineering work.

In other words, when carrying out underwater reclamation work, a thin layer of earth and sand is evenly spread on the cohesive soil bed at the bottom of the water to form an even thin layer of earth and sand on the surface of the cohesive soil, thereby suppressing the cohesive soil.
With the conventional means of dispersing soil from above a conveyor, some diffusion in the water may occur, but the result is that the sediment is deposited in a mountain shape, and due to the viscosity of the water bottom, it is virtually impossible to spread a thin layer of soil uniformly on top of the water. This cannot be expected, and the clay soil cannot support the weight of the released sediment that has accumulated in a mountain shape, causing movement of the clay soil and burying of the accumulated sediment in the clay soil, resulting in the entire surface of the sediment being covered. It is difficult to suppress clayey soil by spreading it in a thin layer.

In addition, when a thin layer of sand mat is laid on the surface of cohesive soil for the purpose of improving the cohesive soil, when discharging soil from a conveyor as in the past, it is often This sand mat was destroyed,
Since it is thought that it may be difficult to achieve the purpose of ground improvement, efforts are currently being made to find appropriate countermeasures for the method of dispersing a thin layer of soil onto viscous surfaces during land reclamation work, whether underwater or on land.

In order to solve the above-mentioned problems, the present invention uses the simplest mechanism from the tip of the conveyor to the soil concentrated discharge section to provide a certain width so that the soil can be uniformly dispersed. It is designed to facilitate the work of dispersing soil evenly and in a thin layer, and its features are as follows:
A downwardly expanding cone-shaped earth and sand guide body having a generally circular upper surface and an elliptical lower surface is attached to the tip of the conveyor so as to be horizontally adjustable in accordance with the elevation angle of the conveyor.

That is, in the present invention, as a cone-shaped earth and sand guiding body, a cone is pressed from two lateral directions to form a substantially elliptical shape when viewed from above, and the top thereof is a circular flat plate, so that the earth and sand falling on the circular flat plate are transferred to the outer periphery of the circular flat plate. Guide plates are arranged radially to distribute the soil evenly and at equal intervals in the longitudinal direction of the ellipse, so that the soil that falls concentrated at the upper center is evenly distributed at equal intervals in the longitudinal direction. Furthermore, this earth and sand guide is supported at the lower part of the conveyor tip so that the longitudinal center of the ellipse is the same as the center of the conveyor, and so that the earth and sand guide can be horizontally adjusted in accordance with the elevation of the conveyor. , a swingable guiding chute is attached to the conveyor discharge side so that the earth and sand can be guided to the central part of the circular flat plate, and by such a series of devices, the earth and sand that is concentratedly discharged from the conveyor is It is spread over a certain width in the direction of the center line of the conveyor, and by the rotating movement or lateral movement of the conveyor itself, it is possible to spread a uniform thin layer over a certain width, and it is also possible to spread the sediment in a uniform thin layer over a certain width. The thickness of the spread layer can be changed freely by changing the rotation or running speed of the conveyor.

By successively repeating such thin layer spreading, the method of suppressing clayey soil using earth and sand as described above is made possible, and the reclamation work for ideal ground improvement can be carried out without any problems.

The present invention will be described in detail below based on the illustrated embodiments. Fig. 1 shows a side view of a conical earth and sand guiding body according to the present invention, and Fig. 2 shows a plan view of the same. As shown in the figure, the guide A is composed of a main body 1, a circular flat plate 2 at the top, and guide plates 3 arranged radially on the outer peripheral surface of the main body 1. The cone is pressed from the side and shaped into a substantially elliptical shape when viewed from above, and in the illustrated example, an 18-sided ellipse is shown for convenience in manufacturing.

A circular flat plate 2 is provided at the top of this main body 1 to create a dead stock area for earth and sand.By creating the dead stock in a conical shape, the earth and sand falling from above the dead stock can be removed from the circular flat plate 2. This is to distribute the particles evenly around the outer circumference of the area.

Three groups of guide plates are arranged radially on the outer peripheral surface of the main body 1 to evenly distribute the earth and sand that is evenly distributed from the outer periphery of the dead stock on the circular flat plate 2 in the longitudinal direction of the main body 1. .

That is, as shown in the second figure, as an example, the outer periphery of the circular plate 2 is divided into 18 equal parts at equal intervals, each upper end of the guide plate 3 starts at a position divided into 18 equal parts, and the lower end of the main body 1 is divided into 8 equal parts in the longitudinal direction. So that the earth and sand that slides down on the outer peripheral surface of the main body 1ρ along the guide plate 3 is distributed to the outer peripheral part of the equally divided positions.
The lower end of each guide plate 3 is determined.

Figures 3 to 6 are comparative diagrams of earth and sand falling by the cone-shaped earth and sand guide A according to the present invention and earth and sand guides having other shapes. With the body 4, the conical earth and sand guide 6 shown by the thin line, and the guide A according to the present invention, the four pyramidal earth and sand guide 4 has a falling form 4a in which it accumulates in a mountain shape as shown in the fourth figure. The conical soil guide 6 has a medium-low plate-like falling shape 6a as shown in Figure 6, whereas the guide A of the present invention has a flat, layered shape with a uniform thickness as shown in Figure 5. Falling form 1
It turns out that the guide body A according to the present invention, which has a circular upper part and an elliptical lower part, is the most excellent in terms of uniform diffusion.

At this time, it is possible to provide a special guide plate on the outer peripheral surface of the guide bodies 4 and 6 according to the same theory as the guide plate 3 in the present invention, but there are problems in actual manufacturing, and it is difficult to put it into practical use. hard.

FIG. 7 is a side view of an embodiment of the entire scattering device using the earth and sand guide body A according to the present invention, FIG. 8 is a plan view of the same, and FIG. 9 is a front view of the same. A supporting metal fitting 7 is provided upwardly projecting from the guide plate 3 on the front side of the earth and sand guide body A, and the upper end of the supporting metal fitting 7 is rotatably supported on the conveyor frame 9 via a pin 8. A bracket 10a of a pulley 10 is pivotally supported by a pin 11 at the lower end of the guide plate 3 at the rear of the main body 1 on the opposite side from the supporting hardware 7 in the body A, and a wire ejected from a winch 14 installed on the conveyor frame 9 The rope 12 is stretched over the pulley 10 via the guide pulley 13, and by operating the winch 14, the earth and sand guide body A is held horizontally regardless of the elevation angle of the conveyor B installed on the conveyor frame 9. Become.

A guide chute 16 is installed in the head portion of the conveyor B, which is the discharge side, to receive the soil discharged from the belt conveyor 15 and cause it to fall to the soil guide body A side. The belt conveyor 15 concentrates the earth and sand discharged from the belt conveyor 15 at the center of the guide body A, and causes it to fall onto the center of the circular flat plate 2 at the top of the main body 1 of the guide body A.

At this time, the upper end of the chute 16 is rotatably supported by a head hopper 18 by a pin 17, and a handle 20 is rotatably supported by a pin 19 at the outer lower part of the chute 16, and the handle 20 is fixed. As a means, for example, as shown in the figure, a large number of grooves 2 are formed on the lower surface of the handle 20.
0a are arranged in a row, and the grooves 20a are fixed by being removably engaged with a stopper 21 fixed to the conveyor frame 9 side.

By operating the handle 20, the angle of the guide chute 16 is always adjusted according to the elevation angle of the conveyor B and the holding position of the soil guide body A.
Adjustments can be made so that the earth and sand fall in a concentrated manner at the center of the circular flat plate 2.

The apparatus of the present invention is as described above, and the layered distribution of the earth and sand discharged from the belt conveyor 15 by the conveyor B and the earth and sand guide member A is performed as follows.

That is, the earth and sand discharged from the head part of the conveyor 15 is deposited in a conical shape on the circular flat plate 2 in the earth and sand guiding body A through the guide chute 16 as shown in FIG.
It slides down from the outer circumference of the main body 1 through each guide plate 3 over the outer circumferential surface of the main body 1, which is more oval than circular, and lands on the center line of the conveyor 15 on the target dispersing surface as shown in FIGS. The soil is uniformly diffused and released with a certain width along the side, making it possible to suitably obtain the desired thin-layer dispersion.For example, in reclamation work, ground improvement work, etc., it is suitable for dispersing a thin layer of soil on the surface due to its viscosity. And it can be done under perfect conditions.

Moreover, according to the present invention, it is sufficient to install the conical soil guiding body A below the discharge end of the belt conveyor so that it is held horizontally in response to changes in the elevation angle of the conveyor, and only the simplest mechanism is required. Due to its uniform diffusion, the layered distribution with a certain width is carried out extremely smoothly, and this makes it possible to easily spray a thin layer of soil on top of the viscous surface, which was considered difficult to do in the past. It enables the suppression method, and the thickness of the layer can be adjusted freely by turning the conveyor and speed of travel, making it very useful for various types of reclamation and ground improvement work, whether underwater or on land.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conical sand guide according to the present invention, Fig. 2 is a plan view thereof, and Figs. 3 to 6 are a sand guide according to the present invention, other shapes of the sand guide, and their soil dispersion. A comparative explanatory diagram of the state, FIG. 7 is a side view of the entire embodiment of the device of the present invention,
FIG. 8 is a plan view of the same, and FIG. 9 is a plan view of the same. A... Conical earth and sand guide body, B... Conveyor, 1...
Main body, 2... Circular flat plate, 3... Guide plate, 7
...Support hardware, 9...Conveyor frame, 10,1
3... Pulley, 14... Winch, 12... Wire robe, 15... Belt conveyor, 16... Guide chute, 20... Handle, 21... Stopper.

Claims (1)

[Claims] 1. A soil dispersion device characterized in that a downwardly expanding cone-shaped soil guiding body with a generally circular upper surface and an elliptical lower surface is attached to the tip of a conveyor so as to be horizontally adjustable in accordance with the elevation angle of the conveyor.