JPH0432723A - Seismic intensity meter using granule and seismic intensity measuring method - Google Patents

Abstract

PURPOSE:To measure seismic intensity easily, accurately, and quantitatively by making granules put in a container form a surface in the outer peripheral surface shape of an inverted cone which has a slanting surface at an angle of repose while the opening of a granule discharge tube is positioned atop of the inverted cone. CONSTITUTION:The granules 2 are put in the container 1. The granule discharge tube 3 is inserted and held slidably in a plug body 6 provided while fitted in the lower opening 7 of the container 1. One end of the discharge tube 3 is open in the container and the granules 2 form the surface 11 in the outer peripheral surface shape of the inverted cone which has the slanting surface at the angle of repose while the opening of the discharge tube 3 is positioned at the tip part of the inverted cone. A scale 4 is provided on the discharge tube 3, which is combined with a stop device 5 to constitute a discharge amount measuring instrument. When the granules are vibrated, the granules collapse and fall, but when a next angle of repose is arrived, they stop at the slanting surface 12. After the amount of the granules accumulated in the discharge tube 3 is read on the scale 3, the opening of the discharge tube 3 is shifted downward in position and the angle of repose of the surface of the granules is set as the initial angle of repose, so that seismic intensity can be measured again.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is based on m] A particle having a surface shaped like the outer peripheral surface of a vertical pyramid comes to rest when the angle formed between the surface and the horizontal plane reaches an initial angle of repose, When vibration is applied in this state, the powder and granules flow out again depending on the amount of vibration, and come to rest when the next angle of repose is reached. A method of determining the seismic intensity by using the unique vibration and a seismic intensity meter. Regarding.

[Prior Art] Various methods and devices are known for determining the JF+ of seismic intensity, such as a method of expressing vibration in a waveform and measuring the amplitude.

However, all of these methods require complicated and large equipment, making it difficult to easily install or carry them anywhere.

Furthermore, it is not easy to clearly and clearly quantify the measurement results as seismic intensity, and there is a strong need for improvement.

[Problems to be Solved by the Invention] The present invention can easily and accurately measure seismic intensity, and can easily and easily measure seismic intensity in any bare place without requiring complicated and large equipment, and is convenient to carry. It provides a seismic intensity meter and a method for measuring seismic intensity.

[Means for resolving the petition] The present invention provides the following: ) A JF-pressure pipe is arranged, and the powder and granule stored in the container are made to form a surface like the outer peripheral surface of an inverted cone with the opening of the powder discharge pipe as the tip of an inverted cone having a slope at an angle of repose. , A seismic intensity meter using powder and granular material, consisting of a powder discharge pipe with the (+!2 end opened to the outside of the container).

2. Determine the amount of powder that has flowed out into the powder discharge pipe that opens to the outside of the container as J+it J! A seismic intensity meter using powder or granular material according to claim 1, further comprising an lt device.

3. Claim 1 or 3, wherein the meter and device for measuring the amount of powder or granular material are formed by a scale provided on a powder or granular material discharge pipe and a stop device provided at the end of the pipe to prevent the powder or granular material from flowing out. A seismic intensity meter using powder and granular material described in 2.

4. A claim in which the measuring device for measuring the amount of powder or granules is formed by a measuring device that receives the powder or granules from a powder or granule discharge pipe and a stop device installed at the end of the pipe to prevent the powder or granules from flowing out. A seismic intensity meter using powder or granular material as described in any one of Items 1 to 3.

5. Claims 1 to 4, wherein an insertion port is provided in the lower part of the container, and a powder discharge pipe with a sealing device tightly installed is inserted therein.
A seismic intensity meter using powder or granular material as described in any one of the above.

68 A stopper with an insertion hole into which a sealing device or a powder discharge pipe can be slidably inserted is provided at the opening in the lower part of the container, and the powder discharge pipe is inserted into the insertion hole. The seismic intensity meter using powder and granular material according to any one of claims 1 to 5, wherein the seismic intensity meter is a sealing tool for adjusting the opening position of a powder or granular material discharge pipe in a container.

7. Insert the plug into the opening in the lower part of the container, which has a screw on the inner surface of the sealing device and an insertion hole in the center for slidably inserting the powder discharge pipe. 6. A sealing device for adjusting the opening position of a powder discharge pipe in a container, the closure having a threaded screw provided on the outer surface of the powder discharge pipe. A seismic intensity meter using powder and granular material described in .

8. Store the powder in a container that is sealed so that at least the powder does not flow away, and install a powder discharge pipe that opens into the inside of the container at the bottom of the container, and connect one opening of this pipe to the powder. A part of the powder is discharged by contacting with the surface of the powder to form a powder surface in the shape of an inverted pyramid outer circumferential surface having a slope at an angle of repose, and then the powder in this state is A method of measuring seismic intensity by applying vibration to a body and measuring the amount of powder and granule ejected until the powder and granule form a powder and granule surface in the shape of an inverted cone outer circumferential surface with a slope at the next angle of repose. .

9. The method for measuring seismic intensity according to claim 8, which comprises measuring the amount of discharged powder or granular material by volume or weight.

The shape of the container used in the present invention is not particularly limited as long as it stores the powder and granules and does not leak from anything other than the clay pipe. A cylindrical body, especially a cylindrical body, is preferable in order to form a surface like the outer circumferential surface of an inverted cone with a slope at the angle of repose. This has the effect of allowing the surface to be observed from the outside.

In addition, it is also possible to divide the container into two upper and lower chambers using a partition plate, store the granular material in the upper chamber, and provide a discharge port in the partition plate. The discharge port may have a slit shape. In this type of seismic intensity meter, the hole provided in the partition plate is a powder discharge pipe, and the surface formed by the powder at the C1 angle is shaped like the outer circumferential surface of the m cross section of an inverted cone. is understood.

If the container is provided with a supply port at the top for replenishing the powder or granular material, the powder or granular material can be sequentially replenished, which is convenient for continuous and constant feeding.

The powder discharge pipe installed in the lower part of the container is ff1I of the container.
Although it is possible to arrange J at the lower part, there is an advantage that the structure becomes B, iii if it is arranged at the bottom. Is it possible to fix the connection between the container and the discharge pipe?As the surface of the powder and granules gradually lowers as the powder is discharged during seismic intensity measurement, it is advisable to arrange the opening position of the discharge pipe so that it can be adjusted to match this surface. It is valid. Simply insert a sealing device such as a slidable sleeve made of backing material around the discharge pipe, insert this sleeve into the insertion opening provided at the lower part of the container, and align it with the surface of the powder. The position can be adjusted by sliding the discharge pipe. Adjustment can be made using other appropriate methods, but if particularly accurate adjustment is required, a screw is provided on the inner surface and an insertion hole is drilled in the center into which the powder discharge pipe can be slidably inserted. A suitable sealing device is one in which a closed stopper is inserted into the opening in the lower part of the container, and a screw provided on the outer surface of the powder discharge pipe is screwed onto the screw. Insert one stopper into the insertion hole provided at the lower part of the container and fix it. Insert the powder discharge pipe into the insertion hole and screw together with the stopper to connect the powder discharge pipe. By moving it up and down with a screw, the opening position of the powder discharge pipe can be precisely controlled.

The opening of the powder discharge pipe that opens into the inside of the container is preferably located at the center of the horizontal cross section of the container. This is preferable because the surface can be formed in the shape of an inverted conical outer circumferential surface of the powder, which is accurate and repeatable. The diameter of the pipe should be such that the powder can flow out without resistance.

Any appropriate device can be used to measure the discharged powder or granular material, but for example, a stopper for the powder or granular material flowing out at the lower end opening of the powder or granular material discharge pipe may be provided to prevent the volume or weight from being trapped in the discharge pipe. It may be formed by installing a scale, and a storage container may be used to receive the flowing powder and granular material and measure its amount.
Of course, a logarithmic scale or the like can be used as the scale if necessary.

Sand, glass pieces, etc. can be used as the powder and granules, and the particle size should be narrower in the width of the particle size distribution curve, from 0.1 to 0.6
Powder particles with a diameter of mm are suitable.

[Function] When an outflow pipe is opened to the accumulated powder, it collapses from the surface and flows out, forming a surface shaped like the outer peripheral surface of an inverted cone, and comes to rest when the angle between the surface and the horizontal plane reaches the angle of repose. , this angle of repose is called the initial angle of repose.If vibration is applied in this state, the powder will flow out again depending on the amount of vibration, and when the next angle of repose is reached, the piece will come to rest. The inventor focused on the peculiar behavior of powder and granular material due to this vibration, and as a result of various studies, found that a certain powder and granular material stored in a certain container always flows out from a certain outflow pipe according to the amount of vibration applied. They discovered that a certain amount of powder flows out of the plate, succeeded in quantitatively measuring the amount of vibration applied based on the amount of powder and granules that flowed out, and completed the present invention.

To explain it in an easy-to-understand manner, the cradle-shaped surface of an inverted cone made of powder and granules collapses from the periphery to the center, as in, for example, the ant land that is the nest of the larvae of Usuba Misaki. When the slope collapses to a certain extent, it becomes stable and does not collapse any further. The angle formed between the slope and the horizontal plane in this state is the angle of repose. When vibrations are applied, it collapses again, but eventually stabilizes. At this time, the amount of powder particles that collapse is constant depending on the amount of vibration applied.

In the present invention, the opening of the granular material outflow pipe corresponds to the tip of a bulge having a surface shaped like the outer peripheral surface of an inverted cone formed by the granular material. When vibration is applied to a powder that is stable at the initial angle of repose, it collapses, but eventually comes to rest and becomes stable when it reaches the next angle of repose. In this way, the seismic intensity is further determined.At this time, the position of the opening of the granular material outflow pipe is moved downward, and the angle of repose that forms the outer peripheral surface of an inverted cone formed by the granular material is set to the initial angle of repose. Then, it will be possible to measure the seismic intensity again. Adjusting the opening position of the powder outflow tube in this manner is extremely effective for continuous measurement.

If you measure and determine the relationship between the amount of powder and granular material flowing out of the device and the seismic intensity in advance, you can easily quantify the seismic intensity due to the applied vibration by measuring the amount of powder and granular material flowing out. It can be measured.

The present invention can be used continuously and almost permanently if powder and granules are replenished.

One of the features of the present invention is that seismic intensity can be measured quantitatively in this way, and the measuring device can be made smaller, lightweight, and can be easily and accurately measured anywhere.

A second feature of the present invention is that measurement does not require energy such as electricity, and measurement can be performed satisfactorily even in situations where such energy keys cannot be used.

The third feature of the present invention is that the waste of the discharged powder or granular material may be measured either by weight or by volume, and this degree of freedom is very convenient in practice.

Furthermore, it is also possible to automatically move the outflow pipe until it reaches the initial branch and corner, thereby establishing a continuous Jll+ position. The amount of ground powder may be automatically measured and recorded, and any commonly used automated means may be used.

"Example" Next, the present invention will be specifically explained with reference to examples.

FIG. 1 shows an embodiment of the seismic intensity meter of the present invention. 1 is a container, and 2 is a granular material. It is a 6-1 stopper, and in this embodiment, it is a stopper provided with an insertion opening for a powder discharge pipe. 3
is a powder discharge pipe, which is slidably inserted into an insertion opening of a stopper fitted in the lower lower part of the container. 1 Jun 1 of the powder discharge pipe opens into the container, and the powder discharge pipe has a surface shaped like the outer circumferential surface of an inverted cone with the opening of the powder discharge pipe being the tip of the inverted cone and having a slope at an initial angle of repose. It forms 1 quantity. Reference numeral 4 denotes a scale for measuring the discharge amount provided on the powder discharge pipe, and in combination with the stop device 5 forms a discharge amount measuring device. In this embodiment, when one measurement is completed, the stop device 5 is opened to discharge the accumulated particles and the next measurement is carried out. 12 is a slope with a stable angle of repose that is vibrated.

FIG. 2 shows another embodiment of the seismic intensity meter of the present invention.

Reference numeral 9 denotes a screw provided on the outer circumferential surface of the powder discharge pipe, which is screwed together with a screw 10 provided on the inner circumferential surface of the insertion opening of the stopper fitted in the lower lower part of the container. There is. 8 is rotary brazing. By rotating the powder discharge pipe, the opening position can be adjusted with high precision. 13 is the powder supply port, and from here 1
Continuous measurement is possible by replenishing used powder and granular material.

Figure 3 shows an example of a 2-in-1 constant device for powder and granular materials of the seismic intensity meter of the present invention, and the volume of the scale section provided on the powder discharge pipe is increased to increase the amount of powder and granular material measured. did.

Figure 4 shows an example of a device for determining powder and granular materials in a seismic intensity meter according to the present invention. I can measure a.

FIGS. 1 to 4 are examples in which the volume of discharged powder and granular material is determined as 1.

FIG. 5 shows an example of a device for measuring powder and granular material in the seismic intensity meter of the present invention, where 15 is a weighing scale and this example measures the discharged powder and granular material by weight.

FIG. 6 shows another embodiment of the present invention, in which the amount of containers is divided by the dividing plate 1.
This seismic intensity meter is divided into two upper and lower chambers by 6, the upper chamber houses the powder and granular material 2, and a slit-like hole 17 is provided in the partition plate. In the embodiment in which the wall surface of the slit-like hole is tapered downward, the container is a transparent container.

[Effect] The present invention improves the above-mentioned kneading method by using an inverted 9@tai method.The granules with a surface shaped like an inverted outer circumferential surface come to rest when the angle between the surface and the horizontal plane does not reach the initial angle of repose, and vibrations are applied in this state. The powder flows out again depending on the amount of vibration and comes to rest when the next angle is reached.Using this unique behavior, the seismic intensity can be easily and accurately quantitatively measured. It has a great effect.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views showing an embodiment of the seismic intensity meter of the present invention. FIGS. 3 to 5 are cross-sectional views showing a particle measuring device of a seismic intensity meter according to the present invention. FIG. 6 is a perspective view showing an embodiment of the seismic intensity meter of the present invention. 1... Container 2... Powder 3... Powder discharge pipe 4... Discharge point measurement scale 5... Stop device 6... Arrival tool 7... Container lower opening 8 ... Rotation line 9 ... Screw 10 ... Screw 11 ... Initial stability 7υ, angle of powder surface 12 ... Angle after vibration, powder surface 13 ... Powder supply port 14 ... Measuring cylinder 1 5 ... Weight 16 ... Division plate 17 ... Slit-shaped discharge port 1st section 3 Figure 5 Figure 4 Figure 6 figure

Claims (1)

[Claims] 1. The powder or granule is stored in a container that is sealed to prevent at least the powder from flowing out, and a powder or granule discharge pipe that opens into the container from the lower part of the container is disposed, and the powder or granule is placed inside the container. For the stored powder, the opening of the powder discharge pipe is formed as the tip of an inverted cone to form a surface like the outer peripheral surface of an inverted cone having a slope at an angle of repose, and the other end of the powder discharge pipe is connected to the container. A seismic intensity meter that uses powder and granules and is opened to the outside. 2. The seismic intensity meter using powder and granular material according to claim 1, further comprising a measuring device for measuring the amount of powder and granular material that has flowed out into the powder and granular material discharge pipe that opens to the outside of the container. 3. According to claim 1 or 2, the measuring device for measuring the amount of the powder or granular material is formed by a scale provided on the powder or granular material discharge pipe and a stop device provided at the end of the pipe to prevent the powder or granular material from flowing out. described,
Seismic intensity meter using powder and granules. 4. A claim in which the measuring device for measuring the amount of powder and granules consists of a measuring device that receives the powder and granules from a powder discharge pipe and a stop device that prevents the powder and granules from flowing out at the end of the pipe. Items 1 to 3
A seismic intensity meter using powder or granular material as described in any one of the above. 5. The powder or granular material according to any one of claims 1 to 4, wherein an insertion port is provided in the lower part of the container, and a powder or granular material discharge pipe with a sealing device tightly installed is inserted thereinto. Seismic intensity meter used. 6. Place a plug in the lower opening of the container, in which the closure has an insertion hole into which the powder discharge pipe can be slidably inserted, and insert the powder discharge pipe into the insertion hole. The seismic intensity meter using powder and granular material according to any one of claims 1 to 5, wherein the seismic intensity meter is a sealing tool for adjusting the opening position of a powder or granular material discharge pipe in a container. 7. The sealing device is provided with a screw on the inner surface, and a stopper with an insertion hole in the center for slidably inserting the powder discharge pipe is arranged at the opening in the lower part of the container, and the screw 6. A sealing device for adjusting the opening position of a powder discharge pipe in a container, the closure having a threaded screw provided on the outer surface of the powder discharge pipe. A seismic intensity meter using powder and granular material described in . 8. Store the powder in a container that is sealed so that at least the powder does not flow out, and install a powder discharge pipe that opens into the container at the bottom of the container, and connect one opening of this pipe to the A part of the powder is discharged by contacting with the surface of the powder to form a powder surface in the shape of an inverted pyramid outer circumferential surface having a slope at an angle of repose, and then the powder in this state is A method of measuring seismic intensity by applying vibration to a body and measuring the amount of powder and granule ejected until the powder and granule form a powder and granule surface in the shape of an inverted cone outer circumferential surface with a slope at the next angle of repose. . 9. Measuring the amount of discharged powder or granular material by volume or weight,
The method for measuring seismic intensity according to claim 8.