JPH06293417A - Transporting device for granular body - Google Patents

Abstract

PURPOSE:To easily regulate transporting speed and flow rate, simplify setting, and facilitate maintenance and management by rotatably arranging a resistant blade in a chute, and providing a driving source capable of externally regulating the rotating angle of the resistant blade. CONSTITUTION:Hoppers 1, 2 are mutually connected by a chute 3, and the excavated earth put in the high level hopper 1 is allowed to flow to the low level hopper 2 through the chute 3. A resistant blade 4 is rotatably arranged in the chute 3, and a cylinder 5 which is a driving source capable of externally regulating the rotating angle of the resistant blade 4 is provided. The rotating angle of the resistant blade 4 is optionally set by extending and contracting the cylinder 5 to regulate the passage sectional area and flow direction in the chute 3. Thus, the flow speed and flow rate of the excavated earth flowing down in the chute 3 are kept constant by the synergetic effect of the damping by the collision with the resistant blade 4 and the damping by the drawing of the passage area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular material transport apparatus for transporting various granular materials such as soil and gravel by utilizing a drop.

[0002]

2. Description of the Related Art At a construction site such as a mountain tunnel or a mountain road, a method of transporting a large amount of excavated soil to a lowland is to install a cable over a transportation section and use a bucket suspended from the cable. Cable transport method for loading and transporting soil, conveyor transport method for transporting multiple belt conveyors in a row Slurry transport method for converting soil into slurry and transporting it in pipes A method is known in which a hollow chute is provided and the chute is made to flow down and transported.

[0003]

The above-mentioned conventional transportation technology has the following problems.

<A> In the cable transportation method, the transportation efficiency is low, and the transportation efficiency is low, and it takes a long time to install the equipment, and in addition, the equipment cost and the maintenance cost are high.

<B> In the conveyor transportation method, there is a limit to the gradient that can be adopted.

<C> The slurry transportation method requires special transportation equipment, and is not suitable for use in a mountainous area where these equipments are difficult to transport.

<D> In the case of chute transportation, the downflow speed is easily increased due to the acceleration, and the risk burden is large. Also,
Depending on conditions such as the inclination angle of the sand chute, the particle size of the sand, and the soil quality, the downflow speed is different and stable transportation is difficult.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to easily adjust the transportation speed and flow rate of a granular material, and to install it easily. An object of the present invention is to provide a granular transportation device that can be easily maintained and managed later.

[0009]

DISCLOSURE OF THE INVENTION The present invention relates to a granular material transporting device for allowing a granular material that has been dropped into a hollow chute to flow down, in which a resistive blade is rotatably arranged in the chute and And a drive source whose rotation angle is adjustable from the outside.

[0010]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings.

<B> Preliminary transportation means FIG. 1 shows an example of a transportation device. 1 is a highland hopper installed near the excavation site, and 2 is a lowland hopper installed near the road. The hoppers 1 and 2 are connected by a chute 3 having a rectangular cross section so that the soil cut into the highland hopper 1 can flow down to the lowland hopper 2 through the chute 3. If the chute 3 is simply transported by using the head, the downflow speed varies depending on the inclination angle of the chute 3 and the soil quality as described above, which makes it difficult to employ it on site. In the present embodiment, the chute 3 is provided with a downflow velocity adjusting mechanism described below, so that quantitative transport can be performed on a steep slope.

<B> Downflow speed adjusting mechanism The downflow speed adjusting mechanism is composed of a plurality of resistance blades 4 arranged in the chute 3 so that the rotation angle can be adjusted, and a cylinder which is a drive source for adjusting the rotation angle of each blade. 5 and 5 are the basic components. The flow rate adjusting mechanism will be described in detail below.

<C> Resistance blade (FIGS. 2 and 3) The resistance blade 4 is rotatably supported with its support shaft 41 in the penetrating direction of the ceiling 31 and bottom plate 32 of the chute 3 and in the longitudinal direction of the chute 3. Shoot 3 at regular intervals along
It is arranged on both sides inside. The arrangement interval of the resistance blades 4 and the size of each resistance blade 4 are appropriately selected. A lever 42 is integrally provided on the upper end of a support shaft 41 that penetrates the ceiling 31 and projects to the outside, and the resistance blade 4 can freely rotate within the chute 3 by the rotation operation of the lever 42. ing. As shown in FIG. 4, the effect of reducing the downflow speed of the soil cut by the resistance blade 4 increases in proportion to the crossing angle θ with respect to the downflow direction A of the cutting soil, and the crossing angle θ reaches its maximum at 90 degrees.

<D> Driving means (FIGS. 2 and 3) Between the levers 42 arranged on the upper portion of the chute 3, link members 6, 6 are rotatably connected via pins along the longitudinal direction of the chute 3. Further, the transverse link 7 is connected between the one ends of the link members 6 and 6. Shoot 3
The hydraulic or pneumatic cylinder 5 installed on the top of the
It is connected to the central portion of the transverse link 7. The rotation angle of the plurality of sets of resistance blades 4 can be arbitrarily set by expanding and contracting the cylinder 5. In this embodiment, the case where one cylinder 5 controls the rotation angle of the resistance blades 4 arranged on both sides of the chute 3 is shown, but the cylinders 5 may be arranged in each row. Further, it goes without saying that various known driving means can be used instead of the cylinder 5. The rotation angle may be independently adjusted for each resistance blade 4.

[0015]

Next, the operation of the transportation device will be described. Figure 1
In the above, when the soil is fed into the highland hopper 1, the soil in the highland hopper 1 flows down in the chute 3 due to the head and is discharged into the lowland hopper 2. When the soil is allowed to flow down through the chute 3, there is a risk that the flow speed may increase due to acceleration. Therefore, as shown in FIG. 2, the rotation angle of the resistance vanes 4 arranged in the chute 3 is arbitrarily set by expanding / contracting the cylinder 5 to adjust the passage cross-sectional area and the downflow direction in the chute 3. As a result, the cut soil flowing down within the chute 3 is kept at a constant downflow speed and flow rate due to the synergistic effect of the damping due to the collision with the resistance blades 4 and the damping due to the narrowing of the passage area. Therefore, by changing the rotation angle of the resistance blade 4 during the transportation of the cut soil, the downflow speed and the flow rate of the cut soil can be arbitrarily changed. It should be noted that a sensor for measuring the flow rate of the soil cut is provided in a part of the chute 3, and the expansion and contraction of the cylinder 5 is controlled based on the flow rate information of the soil cut obtained by the sensor. Is also good.

[0016]

[Embodiment 2] In the above embodiment, the case where the support shaft 41 of the resistance blade 4 is positioned in the vertical direction has been described. However, the support shaft 41 may be supported in the horizontal direction. Further, a support shaft 41 is provided at the center of the resistance blade 4, and the support shaft 41 is attached to the chute 3
You may arrange | position so that it may support in the center of the passage inside. In this case, the axial support direction of the resistance blade 4 may be either the vertical direction or the horizontal direction of the chute 3.

[0017]

[Third Embodiment] Although the transportation of the cut soil has been described above, the present invention can be applied to the transportation of various granular materials other than the cut soil.

[0018]

Since the present invention is as described above, the following effects can be obtained.

<A> In the case of ordinary chute transportation, the granular material is accelerated and the discharge side has a large risk burden. In the present invention, by adjusting the rotation angle of the resistance blades in the chute, the downflow speed and the flow rate of the granular material can be adjusted to be constant without being affected by the inclination of the chute. Therefore,
Both conditions of continuous transportation and safe transportation of granules can be satisfied at the same time.

<B> Since the potential energy of the granular material is used to flow down, no special power equipment is required for transportation, and large equipment is not required for driving the resistance blade.

<C> Maintenance is easy.

[Brief description of drawings]

FIG. 1 Conceptual diagram of a transportation device

FIG. 2 is a perspective view in which a part of the transportation device is cut away.

FIG. 3 is a cross-sectional view of a chute with a part omitted.

FIG. 4 is a plan view of a chute with a part cut away.

Claims (1)

[Claims] 1. A granular material transporting device for flowing down a granular material thrown into a hollow chute with a drop, wherein resistance blades are rotatably arranged in the chute, and a rotation angle of the resistance blade can be adjusted from the outside. A granular material transportation device characterized by being configured with various driving sources.