JPH0737730B2 - Sediment drop prevention device in sediment discharge device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing sediments from falling in a device for discharging sediments, and more particularly to a device for preventing sediments from falling which can effectively prevent falling of stones discharged from a hopper. .

[0002]

2. Description of the Related Art Conventionally, when a mountain or hill has been cut down and the sediment is transported to another place by a ship or the like, it is transported from a stock place of sand to a loading pier by a belt conveyor, where The method is to load it on board and transport it to another location. By the way, as a place for loading from a stock place of earth and sand or debris to a belt conveyor, for example, as shown in FIG. 3, a hopper 3 is installed at a stock place 2 of earth and sand and debris 1 piled on the ground G, Via a vibrating feeder 5 provided at the outlet of the hopper 3, the belt is dropped onto a belt conveyor 4 installed under the ground and sequentially conveyed.

However, as shown in the figure, the worker W enters and works on the replacement of the liner at the bottom of the hopper 3 and the maintenance of the vibration feeder 5, the belt conveyor 4, etc. The earth and sand and stones 1 piled up on the top fall into the hopper 3 several meters below, and the worker W
There was a great risk of being injured.

[0004]

Therefore, conventionally, the earth and sand and debris 1 piled up on the ground G before the maintenance work is carried out below the height of the upper edge of the hopper 3, that is, as shown in FIG. It must be removed by bulldozers, yunbo, etc. until it reaches the state of 1 of 3 and therefore, 1
There is a problem in that the work of eliminating a lot of work requires a lot of time and labor and enormous cost.

[0005]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned conventional problems, and is intended to remove soil, debris, etc. during replacement of the liner at the bottom of the hopper, maintenance of vibration feeders, belt conveyors, etc. It is an object of the present invention to provide a sediment drop prevention device for a sediment discharge device that can omit the elimination work, ensure the safety of the operator, save a lot of labor and time, and save the cost. It is a thing.

[0006]

In order to achieve the above object, the present invention installs an air bag main body made of a flexible material inside the hopper in a detachable manner. The gist is that it has a substantially cylindrical shape that is smaller than the diameter of the mouth and larger than the diameter of the discharge port, and that it has an air supply / discharge port at one end and a lifting metal fitting at the other end side. To do.

[0007]

The present invention is configured as described above, and when the liner at the bottom of the hopper is reattached or when the vibration feeder and the belt conveyor are maintained, the inside of the hopper is
Since the air bag body is fitted and mounted, the earth and sand and stones do not fall to the work place of the operator, and therefore the work can be performed safely and the operation of removing earth and sand and stones can be omitted. It can be done.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Since the other structures are the same as those of the first embodiment, the same reference numerals are given and the description thereof will be omitted. FIG. 1 is a cross-sectional view of a device for preventing fall of earth and sand embodying the present invention, and 2 is a stock place for earth and sand and debris 1 piled up on a ground G. The hopper 3 is installed, and the discharge port 3 of this hopper 3
A vibrating feeder 5 is installed in the lower part of a, and a belt conveyor 4 for carrying out the earth and sand and debris 1 to the next process is installed in a substantially horizontal state under the vibrating feeder 5.

In the hopper 3, the earth and sand and debris 1 are dropped to the work site during the work of reattaching the liner under the hopper 3 of the worker W and the maintenance work of the vibration feeder 5 and the belt conveyor 4. An air bag body 7 made of a flexible material that dams the earth and sand and the earth and stones 1 in the hopper 3 so as not to do so is detachably installed. The air bag body 7 has a substantially cylindrical shape that is smaller than the diameter of the inlet of the hopper 3 and larger than the diameter of the outlet 3a. At the lower end of the air bag body 7, a pipe for supplying compressed air is provided. A supply / discharge port 9 that can be connected to the rubber hose 8 is provided, and a metal fitting 12 for suspending the crane vehicle 10 via a rope 11 is provided on the upper end side.

Further, the air bag body 7 is used for preventing external damage,
In order to maintain airtightness, it is made of rubber or resin film material and reinforcing material such as tire cord, etc., and it may come into contact with the inner wall surface of the hopper 3 or be easily damaged even if sediments and debris 1 accumulate, Is configured so that it does not come out.
Next, the method of using the airbag main body 7 will be described. Before the worker W enters the hopper 3, it is necessary to replace the liner at the bottom of the hopper 3 and to perform maintenance work on the vibration feeder 5 and the belt conveyor 4. In addition, without removing the earth and sand and the earth and stones 1 piled up on the ground G, the crane body 10 and the airbag body 7 via the rope 11 are used.
Is hung as shown in FIG. 1 and fitted and mounted in the hopper 3.

From this state, a pipe 8 for sending compressed air piped from outside the mine is connected to a supply / discharge port 9 provided at the lower end of the airbag body 7 so that the internal pressure of the airbag body 7 is maximized. Air is fed until the pressure reaches 0.5 kgf / cm ² . Tighten the valve provided in the middle of the pipe and the rubber <br/> hose 8 When the air as described above is completed, pipes and rubber
The hose 8 is removed, and as shown in FIG. 2, an operator W enters to perform liner replacement work and maintenance work for the vibration feeder 5 and the belt conveyor 4. In this way, when the predetermined maintenance work is completed, the compressed air is first evacuated from the airbag body 7 by the reverse operation to the above, and the crane body 10 lifts the airbag body 7 via the rope 11 to perform the work. finish.

As described above, the worker W enters the lower portion of the hopper 3 to replace the liner, and the vibration feeder 5,
When performing maintenance work on the belt conveyor 4,
The air bag body 7 completely closes and closes the opening of the hopper 3, and the falling earth and sand and debris 1 are dammed between the air bag body 7 and the inner wall surface of the hopper 3. You can work with care, and the ground G
Since it is not necessary to remove the earth and sand and the earth and stones 1 piled up on the top, it is possible to save a great deal of work cost without much labor and time.

By attaching a compressed air supply / exhaust pipe and a rubber hose 8 to the air bag body 7, it is possible to remotely adjust the degree of adhesion between the air bag body 7 and the inner wall surface of the hopper 3 during maintenance work. The internal pressure can be adjusted to about 0.1-0.5 kgf / cm ² by adjusting to 1. In addition, after the work is completed, the air bag body 7 can be replaced with earth and sand and debris 1.
Even if it is filled, the volume can be reduced and the suspension can be easily lifted by releasing the pressure in the airbag body 7.

[0014]

As described above, according to the present invention, an air bag body made of a flexible material is detachably installed inside the hopper as described above, and the air bag body is smaller than the diameter of the inlet of the hopper. , It has a substantially cylindrical shape that is larger than the diameter of the discharge port, and has an air supply and discharge port at one end and a lifting metal fitting at the other end, so the liner at the bottom of the hopper can be replaced. In addition to eliminating the work of removing earth and sand and debris during maintenance of the vibration feeder, belt conveyor, etc., the safety of the operator can be ensured.
It saves a lot of time and labor, and also has an effect of saving a large amount of cost for the work of removing sediment and debris.

[Brief description of drawings]

FIG. 1 is a sectional view of an earth and sand fall prevention device embodying the present invention.

FIG. 2 is an explanatory diagram showing the use of the airbag body.

FIG. 3 is a cross-sectional view of a conventional earth and sand discharging device.

[Explanation of symbols]

1 earth and sand, debris 2 stock place, 3 hopper 3a discharge port 4 belt conveyor 5 vibrating feeder 7 air bag body 8 pipe and rubber hose 9 supply / discharge port 12 metal fittings for lifting G ground

Front page continuation (72) Inventor Tetsuya Okamoto 1-3-15 Awaza, Nishi-ku, Osaka City, Osaka Prefecture Kashima Construction Co., Ltd., Osaka Branch (72) Inventor Hiroshi Soma 3-16-11 Marunouchi, Naka-ku, Nagoya, Aichi Nouchi Park No. 306 (72) Inventor Narumi Sato 2-16-1, Kyobashi, Chuo-ku, Tokyo Inside Shimizu Construction Co., Ltd. Document JP-A-2-209596 (JP, A)

Claims (1)

[Claims] 1. The earth and sand piled up on the ground is dropped through a hopper buried in the ground onto a carry-out conveyor laterally installed at a discharge port of the hopper, and is sequentially carried out to the next step. In the earth and sand discharging device configured as described above, an air bag main body made of a flexible material is detachably installed inside the hopper, and the air bag main body is smaller than the diameter of the input port of the hopper and is discharged. The earth and sand in a device for discharging earth and sand, characterized in that it has a substantially cylindrical shape having a diameter larger than the diameter of the outlet, an air supply / discharge port is provided at one end thereof, and a metal fitting for lifting is provided at the other end side thereof. Fall prevention device.