JPS5917693B2 - Material transportation method using gravity - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting agricultural products, minerals, and other materials from high places such as mountains to low places such as lowlands.

Conventionally, cableways have been mainly used as equipment for transporting goods from high places in the mountains to lowlands.In the case of cableways, cableways are used for long, endless transport with many conveyors attached over long distances from mountains to lowlands. Ropes are erected and the long conveyance ropes are driven in circulation, which requires a large amount of driving force, resulting in considerable power costs and the need to construct many steel towers with guide rollers and install large drive equipment. This increases equipment costs, and since the transport ropes and guide rollers are installed at a high place, maintenance is difficult, and transport may not be possible during strong winds or rain.

SUMMARY OF THE INVENTION The object of the present invention is to provide an equipment for transporting goods using gravity, which eliminates the above-mentioned drawbacks.

Next, the present invention will be explained in detail using illustrated examples.

FIG. 1 shows an example of material conveyance equipment used when carrying out the present invention, in which the upper end of an inclined pipe 1 extending diagonally downward from a high place in the mountains toward a low land is provided with a gentle slope or a horizontal line. pipes 7 are connected via arc-shaped pipes,
A gently inclined or horizontal pipe 8 is connected to the lower end of the inclined pipe 1 via an arcuate pipe to form a conveying pipeline 2 having a circular cross section. A loading platform 9 for starting is installed in the section, and a pushing pusher 10 for starting consisting of a pneumatic cylinder device is installed in the section, and a starting side on-off valve 11 is further provided on the high level end side of the pipeline 2. Teru.

An unloading platform 12 is connected to the low-level end of the pipeline 2, and a braking on-off valve 3 is provided on the low-level end side of the pipeline 2. An air outlet 6 is provided on the level side, and an air outlet pipe 13 connected to the air outlet 6 is provided with a valve control device 1.
4, a wind speed detection end 15 and a wind blowing control valve 16 are provided.

The opening degree of the radiation control valve 16 is automatically adjusted by the valve control device 14 so that the velocity of the air flow in the pipeline 2 does not exceed a predetermined limit.

Figures 2 and 3 show a capsule 5 that carries supplies.
A circular wind shielding plate 4, which is slightly smaller than the inner diameter of the pipeline 2, is fixed to both the front and rear ends of the box body 17.
Six wheels 18 are attached, and a lid 19 that can be opened and closed is attached to the opening of the box body 17.

When transporting supplies, first transport capsule 5 containing the supplies.
is placed on the carry-in table 9, and after opening the starting side on-off valve 11, the capsule 5 is pushed by the pusher 10 to move forward in the pipeline 2.

When the capsule 5 travels to the top of the inclined pipeline 1, the capsule 5 travels diagonally downward while releasing the air in the pipeline 2 in front of the capsule from the discharge pipe 13 due to its own weight.

In this case, the wind speed in the discharge pipe 13 is detected and the air discharge control valve 16 is automatically adjusted so that the velocity of the air flow in the pipeline 2 does not exceed a predetermined limit, so that the capsule 5 is Drive at the following safe speeds (for example, 40km/h or less).

When the front windshield plate 4 of the capsule 5 passes through the discharge pipe connection in the pipeline 2, the air in front of the capsule is blocked from escaping forward by the closed braking on-off valve 3. Due to the cushioning effect, the capsule 5 gradually slows down.

The brake opening/closing valve 3 is opened before the capsule 5 has completely stopped, and the capsule is then driven by inertia to the unloading platform 12.

Next, another embodiment of the means for taking the capsule out of the pipeline is shown in FIG.

In this embodiment, a shutoff valve 3' is provided in the horizontal conduit 8 of the pipeline 2 slightly in front of the air outlet 6, and the shutoff valve 3' is normally kept fully open, and the capsule 5 is connected to the shutoff valve. Brake on-off valve 3K in front of 3'
.

After the air cushion completely stops, the stop valve 3' is closed, the braking on/off valve 3 is opened, and the auxiliary blower 2
1, the capsule 5 is moved forward by the forward airflow generated in front of the shutoff valve 3' and pushed out onto the carry-out table 12.

The velocity of the air flow generated in the pipeline 2 due to the travel of the capsule 5 is slower than the velocity of the capsule, and the compression wave of air propagates at the speed of sound, so the flow velocity is detected with a delay of the distance of the pipeline (C: speed of sound). However, considering the safety of capsule travel, the maximum speed of a capsule is approximately 40km.

Since this level of velocity is significantly smaller than the speed of sound, the transmission delay of the flow velocity can be ignored.

FIG. 4 is an explanatory diagram of the capsule traveling speed when the capsule 5 travels in the inclined pipe 1, and the capsule traveling speed U can be determined by the following formula.

V: Air flow velocity W: Weight of loaded capsule ρ: Air density CD: Resistance coefficient fr: Running resistance θ: Pipe inclination angle A: Area of wind shield When carrying out this invention, from multiple locations at high places in the mountains. There may be cases where it is necessary to bring in materials, but in such cases, a branch pipe 20 is provided on the high level side of the pipeline 2 as shown in Fig. 5, and a starting side on-off valve is installed in the branch pipe 20. 11, and at the same time, a carry-in table 9 and a pusher 10 may be provided at the end of the branch pipe line 20.

Further, the wind shielding plate 4 may be provided only at the front part of the capsule 5,
Furthermore, the wind shielding plate 4 may also be configured to serve as an end plate of the box body 17.

1 of the pipeline without installing a branch pipe in the pipeline
If the loading platform 9 is provided only at one location, the departure side on-off valve 11 may be omitted, but as shown in FIG. If the configuration is such that a starting side on-off valve 11 is provided on the inlet side of the pipeline and a branch pipe, and the inlet side of the pipeline that is not used for delivery is isolated from the atmosphere by the starting side on-off valve 11. The capsule can be operated smoothly by sealing it.

As the on-off valve 3.11, one having a structure capable of opening the entire inside of the pipeline 2 is used.

In addition, in order to reduce the difference between the wind speed in the pipeline and the capsule running speed, it is preferable to make the ratio D2/D1 of the inner diameter D1 of the pipeline 2 and the diameter D2 of the wind shield plate 4 close to 1. Since the line 2 has a curve, the diameter ratio D2/D1 should be as close to 1 as possible within the range where the capsule 5 can pass through the curved portion without any trouble.

If the weight of the material contained in one capsule is large, the amount of air discharged is not controlled by the air amount adjustment valve 7,
It is economical to use a turbine-generator combination because the energy of the capsule head can be recovered.

According to this invention, after storing the goods to be transported in the capsule 5, by simply feeding the capsule 5 from the high-level end side of the pipeline 2, the goods-accommodating capsule automatically moves by utilizing its own weight. Therefore, it is possible to transport materials easily and efficiently, and economically with low power costs, without having to install large drive equipment or high steel towers as in the past.

In addition, since the capsule 5 is covered and protected by the pipeline 2, it is highly durable and can be transported safely even in strong winds or rain, and the transport equipment is installed in a relatively low bunker near the ground surface. Therefore, maintenance is easy.Furthermore, when the capsule 5 runs under its own weight, the air in the pipeline 2 in front of the capsule is
The thrust of the capsule 5 causes the air to be radiated from the air outlet 6 provided at the low-level end of the pipeline 2 through the air release control valve 7, and in this case, the speed of the air flow within the pipeline 2 is within a predetermined limit. The amount of air discharged is adjusted so as not to exceed the
The capsule 5 can be run at a safe speed below a predetermined limit.

Furthermore, when the wind shielding plate 4 of the capsule 5 passes through the air outlet 6, the capsule 5 is blocked by the air cushioning effect of the air between the wind shielding plate 4 and the braking on-off valve 3 which is closed in advance. By automatically decelerating the capsule 5 and opening the braking on-off valve 3 before the capsule 5 has completely stopped, the capsule 5 can be driven by inertia and automatically transported from the pipeline 2. Effects such as this can be obtained.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing an example of material transport equipment used in carrying out the present invention, FIG. 2 is a partially vertical side view of a capsule having a wind shield, and FIG. 3 is a side view thereof. Fourth
5 is a schematic plan view of a material conveyance facility having a plurality of carry-in sections, and FIG. 6 is a partially longitudinal side view showing another embodiment of the capsule extraction means. In the figure, 1 is an inclined pipe, 2 is a pipeline 3 is a braking on-off valve, 3' is a shut-off valve, 4 is a wind shield, 5 is a capsule,
6 is an air outlet, 9 is a loading platform for starting, 10 is a pusher, 1
1 is a starting side on-off valve, 12 is a loading platform, 13 is a discharge pipe, 14
1 is a valve control device, 15 is a wind speed detection end, 16 is an air discharge control valve,
17 is a box body, 18 is a wheel, 19 is a lid, 20 is a branch pipe,
21 is an auxiliary blower.

Claims (1)

[Claims] 1. The brake on-off valve 3 provided at the low-level end side of the conveyance pipeline 2 having the inclined pipe line 1 extending diagonally downward from a high place to a low place is closed in advance, and the pipeline Materials are stored in a capsule 5 having a wind shield plate 4 with a diameter slightly smaller than the inner diameter of the capsule 5, and the capsule 5 is loaded into the pipeline 2 and made to travel by its own weight, and the capsule 5 is placed in the pipeline 2 in front of the capsule 5. The air inside the capsule is released from the air outlet 6 provided at the low-level end of the pipeline 2 by the thrust of the capsule, and the air is released from the air outlet 6 so that the speed of the air flow within the pipeline 2 does not become excessive. The amount of air discharged is adjusted, and when the wind shield plate 4 of the capsule 5 passes through the air outlet 6, the capsule 5 is
A method for transporting materials using gravity, which is characterized by reducing the traveling speed of the material and transporting it from the pipeline 2.