JP2019152474A - Water metering system using ri moisture meter - Google Patents

Water metering system using ri moisture meter Download PDF

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JP2019152474A
JP2019152474A JP2018036356A JP2018036356A JP2019152474A JP 2019152474 A JP2019152474 A JP 2019152474A JP 2018036356 A JP2018036356 A JP 2018036356A JP 2018036356 A JP2018036356 A JP 2018036356A JP 2019152474 A JP2019152474 A JP 2019152474A
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belt conveyor
water
moisture meter
measurement
amount
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JP7076228B2 (en
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三郎 片山
Saburo Katayama
三郎 片山
浩章 青木
Hiroaki Aoki
浩章 青木
喬之 石井
Takayuki Ishii
喬之 石井
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Taisei Corp
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Abstract

To provide means which can accurately measure an amount of water in a material.SOLUTION: The system for measuring an amount of water in a material comprises a belt conveyor 10, a material supply device 20 for supplying material A on the belt conveyor 10, an RI moisture meter 30 for measuring an amount of water in the material A, and an auxiliary measurement device 40 disposed at a measurement point or a position in front of the measurement position in the RI moisture meter 30. The auxiliary measurement device 40 has at least one of loading height adjustment means 41 capable of adjusting the loading height of the material A and shaping means 42 capable of shaping the surface of the material A, the measurement accuracy of the amount of water in the material A is thus improved.SELECTED DRAWING: Figure 1

Description

本発明は、ベルトコンベア上を流れる、建設用途に用いる材料の水量を、ＲＩ水分計で計測する水量計測システムに関し、特に、ダム現場で使用されるコンクリートプラントで使用されるコンクリート骨材や、ＣＳＧ（Cemented Sand and Gravel）混合プラントで使用されるＣＳＧ材などの水量を精度良く連続計測するためのシステムに関する。   The present invention relates to a water amount measurement system for measuring the amount of water of a material used for construction applications flowing on a belt conveyor with an RI moisture meter, and in particular, a concrete aggregate used in a concrete plant used at a dam site, CSG (Cemented Sand and Gravel) The present invention relates to a system for continuously and accurately measuring the amount of water such as CSG material used in a mixing plant.

材料の水分量を計測する方法には種々の方法が知られている。
例えば、特許文献１には、ベルトコンベア上を流れる地盤材料に近赤外線を照射して水分量を求める方法が開示されており、特許文献２には、地盤材料の表面水率を測定するためのシステムとして、地盤材料を収容・搬送する搬送筒部にＲＩ水分計やＲＩ密度計からなるＲＩ測定装置を設けた構造が開示されている。 Various methods are known for measuring the moisture content of a material.
For example, Patent Document 1 discloses a method for obtaining the moisture content by irradiating the ground material flowing on the belt conveyor with near infrared rays, and Patent Document 2 discloses a method for measuring the surface water ratio of the ground material. As a system, there is disclosed a structure in which an RI measuring device including an RI moisture meter and an RI density meter is provided in a transfer cylinder portion for storing and transferring a ground material.

このうち、ＲＩ水分計とは、放射性物質を用いて水分を計測する機器であり、放射性物質から放出される中性子と水分子との反応から水分量を推定している。   Among these, the RI moisture meter is a device that measures moisture using a radioactive substance, and estimates the amount of moisture from the reaction between neutrons released from the radioactive substance and water molecules.

ＲＩ水分計は主に透過型と散乱型の２種類の方式に分かれており、土木の盛土現場で一般的に使用されているＲＩ水分計のタイプは、透過型ＲＩ水分計である。
この方式は、放射線を放出する棒状の線源を地盤に打ち込み、地表面にその中性子線を検出する検出器を設置する。これにより地中から放出される中性子が地盤中を通過して検出器に到達し、その量から地盤の水分を割り出すものである。 The RI moisture meter is mainly divided into two types, a transmission type and a scattering type, and the type of RI moisture meter generally used in the embankment site of civil engineering is a transmission type RI moisture meter.
In this method, a rod-shaped radiation source that emits radiation is driven into the ground, and a detector that detects the neutron beam is installed on the ground surface. As a result, neutrons emitted from the ground pass through the ground and reach the detector, and the moisture of the ground is determined from the amount.

一方、散乱型ＲＩ水分計は、線源と検出器を地盤表面上に同時に配置して中性子線を検出するため、非破壊で水分量を計測することができる計測機器である。   On the other hand, the scattering type RI moisture meter is a measuring instrument that can measure the moisture amount in a non-destructive manner because a radiation source and a detector are simultaneously arranged on the ground surface to detect a neutron beam.

特開２０１５−２８４４６号公報JP 2015-28446 A 特開２００９−１２１９３０号公報JP 2009-121930 A

上記特許文献２に係るシステムによれば、以下に示す問題がある。
（１）排出筒部の中の地盤材料の量に応じて、計測場所での地盤材料の密度変化に変動が生じるため、計測精度が悪くなる。
（２）排出筒部の外面にＲＩ水分計を配置しているため、排出筒部内面に地盤材料が付着してしまっていると、その付着材料を計測し続けている結果となってしまう。 The system according to Patent Document 2 has the following problems.
(1) Since the density change of the ground material at the measurement location varies depending on the amount of the ground material in the discharge tube portion, the measurement accuracy is deteriorated.
(2) Since the RI moisture meter is arranged on the outer surface of the discharge cylinder part, if the ground material has adhered to the inner surface of the discharge cylinder part, the result is that the adhering material is continuously measured.

そこで、本発明はコンクリート骨材やＣＳＧ材などの建設用途に用いる材料の水量を精度良く計測可能な手段の提供を目的とする。   Then, this invention aims at provision of the means which can measure the water quantity of the material used for construction uses, such as a concrete aggregate and a CSG material, accurately.

上記課題を解決すべくなされた本願の第１発明は、材料の水量を計測するためのシステムであって、ベルトコンベアと、前記ベルトコンベア上に材料を供給する、材料供給装置と、前記ベルトコンベア上の材料の水量を計測する、ＲＩ水分計と、前記ＲＩ水分計での計測箇所上、または計測箇所よりも手前の位置に設ける、計測補助装置と、を少なくとも具備し、前記計測補助装置が、前記材料の積載高を調整可能な、積載高調整手段、および、前記材料の表面を整形可能な、整形手段、のうち、少なくとも何れか１つの手段を含んでなることを特徴とする。
また、本願の第２発明は、前記第１発明において、前記積載高調整手段が、ベルトコンベアの上方に離隔して配置するゲートであることを特徴とする。
また、本願の第３発明は、前記第１発明または第２発明において、前記整形手段が、ベルトコンベアの上方に配置し、弾性力でもって上下に移動可能なローラであることを特徴とする。
また、本願の第４発明は、前記第１発明または第２発明において、前記整形手段が、ベルトコンベアの上方に配置し、弾性力でもって上下に移動可能なプレートであることを特徴とする。
また、本願の第５発明は、前記第４発明において、前記ベルトコンベアの進行方向における前記プレートの手前側を上側に曲げてあることを特徴とする。
また、本願の第６発明は、前記第１発明ないし第５発明のうち少なくとも何れか１つの発明において、前記材料が、コンクリート骨材またはＣＳＧ材であることを特徴とする。 The first invention of the present application to solve the above problems is a system for measuring the amount of water in a material, comprising a belt conveyor, a material supply device for supplying material onto the belt conveyor, and the belt conveyor. An RI moisture meter for measuring the amount of water in the upper material, and a measurement assisting device provided at a position on the RI moisture meter or at a position before the measurement location, the measurement assisting device comprising: It is characterized by comprising at least one of a load height adjusting means capable of adjusting the load height of the material and a shaping means capable of shaping the surface of the material.
In addition, the second invention of the present application is characterized in that, in the first invention, the stack height adjusting means is a gate arranged separately above the belt conveyor.
The third invention of the present application is characterized in that, in the first invention or the second invention, the shaping means is a roller disposed above a belt conveyor and movable up and down with an elastic force.
The fourth invention of the present application is characterized in that, in the first invention or the second invention, the shaping means is a plate which is disposed above a belt conveyor and is movable up and down with an elastic force.
The fifth invention of the present application is characterized in that, in the fourth invention, the front side of the plate in the traveling direction of the belt conveyor is bent upward.
The sixth invention of the present application is characterized in that, in any one of the first to fifth inventions, the material is a concrete aggregate or a CSG material.

本発明によれば、以下に記載する効果を奏する。
（１）ベルトコンベアを流れる材料に対し、ＲＩ水分計での計測箇所上または計測箇所よりも手前の位置に設けた計測補助装置でもって、材料の積載高や見かけの密度の調整を行ったり、表面整形を行ったりすることで、計測箇所での材料の水量を精度良く計測することができる。
（２）積載高調整手段でもって材料の積載高を調整することでベルトコンベアの撓みを一定に維持できる。よって、ベルトコンベアを構成する複数の搬送ローラの間に配置したＲＩ水分計と、材料との間の距離を一定に保った状態での水量計測が可能となり、材料の水量を精度良く計測することができる。
（３）ベルトコンベアの進行方向において、整形手段を構成するプレートの手前側を上側に曲げておくことで、ベルト上の材料を円滑に流すことができる。
（４）ベルトコンベアを流れる材料を連続して計測できるため、現場の天候等によって含水率の変動が生じ易いＣＳＧ材などの全量検査に好適である。 According to the present invention, the following effects can be obtained.
(1) Adjust the material loading height and apparent density with the measurement auxiliary device provided on the measurement location with the RI moisture meter or at the position before the measurement location for the material flowing on the belt conveyor, By performing surface shaping, the amount of water in the material at the measurement location can be measured with high accuracy.
(2) The deflection of the belt conveyor can be kept constant by adjusting the material loading height with the loading height adjusting means. Therefore, it is possible to measure the amount of water in a state where the distance between the RI moisture meter disposed between the plurality of transport rollers constituting the belt conveyor and the material is kept constant, and accurately measure the amount of water in the material. Can do.
(3) By bending the front side of the plate constituting the shaping means upward in the traveling direction of the belt conveyor, the material on the belt can flow smoothly.
(4) Since the material flowing on the belt conveyor can be continuously measured, it is suitable for the total amount inspection of CSG materials and the like in which the moisture content is likely to fluctuate due to the weather at the site.

実施例１に記載の水量計測システムの構成を示す概略図。Schematic which shows the structure of the water quantity measurement system as described in Example 1. FIG. ベルト上への材料の供給前後の状態を示す概略図。Schematic which shows the state before and behind supply of the material on a belt. 実施例２に記載の水量計測システムの構成を示す概略図。Schematic which shows the structure of the water quantity measurement system as described in Example 2. FIG. 実施例３に記載の水量計測システムの構成を示す概略図。Schematic which shows the structure of the water quantity measurement system as described in Example 3. FIG. 実施例４に記載の水量計測システムの構成を示す概略図。Schematic which shows the structure of the water quantity measurement system as described in Example 4. FIG.

以下、図面を参照しながら、本発明の実施例について説明する。   Embodiments of the present invention will be described below with reference to the drawings.

＜１＞全体構成
本発明に係る水量計測システムは、ベルトコンベア１０と、ベルトコンベア１０上に材料Ａを供給する材料供給装置２０と、ベルトコンベア１０上の材料Ａの水量を計測するＲＩ水分計３０と、ＲＩ水分計３０での計測箇所上または計測箇所よりも手前の位置に設ける計測補助装置４０と、を少なくとも具備して構成する。
以下、各要素の詳細について説明する。 <1> Overall Configuration A water amount measurement system according to the present invention includes a belt conveyor 10, a material supply device 20 that supplies the material A onto the belt conveyor 10, and an RI moisture meter that measures the water amount of the material A on the belt conveyor 10. 30 and a measurement auxiliary device 40 provided at a position on the RI moisture meter 30 or in a position before the measurement position.
Details of each element will be described below.

＜２＞ベルトコンベア
ベルトコンベア１０は、計測対象の材料Ａを所定の位置まで搬送するための装置である。
ベルトコンベア１０は、ベルト１１および搬送ローラ１２等を有する公知の装置を用いることができるため、詳細な説明は省略する。 <2> Belt conveyor The belt conveyor 10 is a device for conveying the material A to be measured to a predetermined position.
Since the belt conveyor 10 can use a known apparatus having the belt 11 and the conveying roller 12 and the like, detailed description thereof is omitted.

＜３＞材料供給装置
材料供給装置２０は、ベルトコンベア１０上に計測対象の材料Ａを供給するための装置である。
材料供給装置２０は、公知のホッパーなどを用いることができるため、詳細な説明は省略する。 <3> Material Supply Device The material supply device 20 is a device for supplying the material A to be measured onto the belt conveyor 10.
Since the material supply apparatus 20 can use a known hopper or the like, detailed description thereof is omitted.

＜３．１＞材料の種類
計測対象となる材料Ａは、表面水量や単位水量などの水量を計測する必要のある建設用途の材料であれば何れであっても良く、例えばコンクリート骨材やＣＳＧ材などがある。
ＣＳＧ材は、河床砂礫等の岩石質の母材であって、建設現場の近傍で容易に採取可能な材料である。ＣＳＧ材は現場で野ざらしにされている事が多く、周囲の天候条件によって含水率が変動する可能性が生じるため、水分量の全量検査のニーズが大きい。 <3.1> Type of material The material A to be measured may be any material for construction use that needs to measure the amount of water, such as the amount of surface water or unit water, such as concrete aggregate or CSG. There are materials.
The CSG material is a rocky base material such as river bed gravel and can be easily collected in the vicinity of the construction site. CSG materials are often exposed to the field, and the moisture content is likely to fluctuate depending on the surrounding weather conditions, so there is a great need for a full water content inspection.

＜４＞計測補助装置
計測補助装置４０は、積載高調整手段４１、整形手段４２の二種類の手段のうち少なくとも何れか１つの手段を含む装置である。
本実施例に係る計測補助装置４０では、積載高調整手段４１のみを設けている。
以下、積載高調整手段４１の詳細について説明する。 <4> Measurement Auxiliary Device The measurement auxiliary device 40 is a device that includes at least one of the two types of means, that is, the stack height adjusting means 41 and the shaping means 42.
In the measurement auxiliary device 40 according to the present embodiment, only the stack height adjusting means 41 is provided.
Hereinafter, details of the load height adjusting means 41 will be described.

＜４．１＞積載高調整手段
積載高調整手段４１は、ベルトコンベア１０上の材料Ａの積載高を調整する為の手段である。
本実施例では、積載高調整手段４１を、材料供給装置２０からベルトコンベア１０上に材料Ａを供給する箇所から、ＲＩ水分計３０による計測箇所までの途上であって、ベルトコンベア１０の上方に離隔するように配置してあるゲートでもって構成している。
本実施例に係る積載高調整手段４１を経由した材料は、その高さが一定に保たれることから、積載高も一定に保たれると解することができる。よって、材料によるベルトコンベアの撓みも一定となり、ＲＩ水分計との間の離隔距離Ｌが一定に保たれることとなる。
ベルト１１に対するゲートの位置は、材料供給装置２０によって材料Ａを連続的に供給する場合であってもボトルネックにならない程度や、ＲＩ水分計３０の性能等を踏まえて適宜決定すればよい。 <4.1> Loading Height Adjustment Unit The loading height adjustment unit 41 is a unit for adjusting the loading height of the material A on the belt conveyor 10.
In the present embodiment, the load height adjusting means 41 is on the way from the location where the material A is supplied from the material supply device 20 onto the belt conveyor 10 to the measurement location by the RI moisture meter 30 and above the belt conveyor 10. It is configured with gates that are spaced apart.
It can be understood that the material that has passed through the loading height adjusting means 41 according to the present embodiment is kept at a constant height because the height is kept constant. Therefore, the bending of the belt conveyor due to the material becomes constant, and the separation distance L from the RI moisture meter is kept constant.
The position of the gate with respect to the belt 11 may be determined as appropriate based on the extent that it does not become a bottleneck even when the material A is continuously supplied by the material supply device 20, the performance of the RI moisture meter 30, and the like.

＜５＞ＲＩ水分計
ＲＩ水分計３０は、ベルトコンベア１０上の材料Ａの水量を計測するための計測装置である。
ＲＩ水分計３０は、前述したとおり主として透過型と散乱型の二タイプに区分されるが、何れのタイプを用いても良い。
また、本実施例では、散乱型のＲＩ水分計３０ａを用いている。 <5> RI Moisture Meter The RI moisture meter 30 is a measuring device for measuring the amount of water of the material A on the belt conveyor 10.
The RI moisture meter 30 is mainly classified into two types, a transmission type and a scattering type, as described above, but any type may be used.
In this embodiment, a scattering type RI moisture meter 30a is used.

＜５．１＞ＲＩ水分計の取付位置
ＲＩ水分計３０の取付位置は、ベルトコンベア１０上の材料Ａに対して計測作業が可能な位置であれば如何なる場所であっても良いが、特に、材料Ａとの間の距離を一定に保持できる位置に固定しておくことが好ましい。
本実施例では、散乱型のＲＩ水分計３０ａを、ベルト１１の裏面側の所定の位置に固定している。 <5.1> RI Moisture Meter Attachment Position The RI moisture meter 30 attachment position may be any location as long as the measurement operation can be performed on the material A on the belt conveyor 10. It is preferable that the distance between the material A is fixed at a position where the distance can be kept constant.
In this embodiment, the scattering type RI moisture meter 30 a is fixed at a predetermined position on the back side of the belt 11.

＜６＞計測手順
図１，２を参照しながら、本実施例に係る水量計測システムでの計測手順について説明する。 <6> Measurement Procedure With reference to FIGS. 1 and 2, a measurement procedure in the water amount measurement system according to the present embodiment will be described.

＜６．１＞材料Ａの供給〜ベルトコンベア１０の搬送
図１に示すように、ホッパーからなる材料供給装置２０からベルトコンベア１０上に連続的に材料Ａを供給する。
ベルト１１上の材料Ａは、搬送ローラ１２の回転によって送りだされて搬送される。 <6.1> Supply of Material A to Transport of Belt Conveyor 10 As shown in FIG. 1, the material A is continuously supplied onto the belt conveyor 10 from a material supply device 20 formed of a hopper.
The material A on the belt 11 is fed out and conveyed by the rotation of the conveying roller 12.

＜６．２＞材料Ａの高さ調整（離隔距離の調整）
材料Ａは、水量の計測箇所よりも手前の位置に設けてあるゲートからなる積載高調整手段４１の下端よりも高く積み上がっている部分が遮られる。
よって、積載高調整手段４１を通過した材料Ａは、一定の高さに揃った状態となって水量の計測箇所に搬送される。 <6.2> Height adjustment of material A (adjustment of separation distance)
In the material A, a portion of the material A that is stacked higher than the lower end of the loading height adjusting means 41 that is a gate provided at a position before the water amount is blocked.
Therefore, the material A that has passed through the loading height adjusting means 41 is brought into a state where the material A is aligned at a certain height, and is transported to the water amount measurement point.

＜６．３＞水量の計測
図２は、散乱型のＲＩ水分計３０ａを設けた位置でのベルト１１の横断面図である。
図２（ａ）では、材料Ａを供給していない際のベルト１１の状態を示しており、図２（ｂ）では材料Ａを供給している際のベルト１１の状態を示している。
図２（ｂ）に示すようにベルト１１に材料Ａを供給している際には、材料Ａの質量により、ベルト１１が下方に向かって撓んだ状態となる。
すなわち、材料Ａの密度が一定であることを前提とすれば、材料Ａの高さを一定にしておけば、材料Ａの質量も、ベルト１１の撓み量も一定となる。
よって、水量計測箇所において、材料Ａの高さが一定であれば、ベルト１１の裏側に設けてある散乱型のＲＩ水分計３０ａと材料Ａまでの離隔距離Ｌは一定に保たれることになる。
したがって、計測対象との離隔距離の変動によって計測値にブレが生じ得る散乱型のＲＩ水分計３０ａを用いた場合であっても、本実施例では、離隔距離Ｌを一定に保つことができるため材料Ａの水量を精度良く計測することができる。 <6.3> Measurement of Water Content FIG. 2 is a cross-sectional view of the belt 11 at a position where the scattering type RI moisture meter 30a is provided.
2A shows the state of the belt 11 when the material A is not supplied, and FIG. 2B shows the state of the belt 11 when the material A is supplied.
As shown in FIG. 2B, when the material A is supplied to the belt 11, the belt 11 is bent downward due to the mass of the material A.
That is, assuming that the density of the material A is constant, if the height of the material A is constant, the mass of the material A and the amount of bending of the belt 11 are constant.
Therefore, if the height of the material A is constant at the water amount measurement location, the separation distance L between the scattering-type RI moisture meter 30a provided on the back side of the belt 11 and the material A is kept constant. .
Therefore, even in the case where the scattering type RI moisture meter 30a in which the measurement value may be shaken due to the variation in the separation distance from the measurement object, the separation distance L can be kept constant in this embodiment. The amount of water of material A can be accurately measured.

＜１＞全体構成
図３を参照しながら、本発明の第２実施例に係る水量計測システムについて説明する。
本実施例に係る水量計測システムにおいて、前記した第１実施例と異なる点は、本発明に係る計測補助装置４０を、積載高調整手段４１の他に、整形手段４２を設けている点である。
以下、整形手段４２の詳細について説明する。 <1> Overall Configuration A water amount measurement system according to a second embodiment of the present invention will be described with reference to FIG.
In the water amount measurement system according to this embodiment, the difference from the first embodiment described above is that the measurement auxiliary device 40 according to the present invention is provided with a shaping means 42 in addition to the load height adjusting means 41. .
Hereinafter, details of the shaping means 42 will be described.

＜２＞整形手段
整形手段４２は、ベルトコンベア１０上の材料Ａの表面を整形するための手段である。
ベルトコンベア１０上を流れる材料Ａに、礫等の粒径が大きい材料が含まれる場合、礫が積載高調整手段４１を構成するゲートをこじ開けるように通過してしまい、材料の高さを一定に保ちきれない可能性がある。
そこで、別途設けた整形手段４２でもって、ゲートを通過した後の材料Ａの表面を均すことで、更に材料の積載高を一定に保持する効果を得ることができる。
図３（ａ）に示す本実施例では、整形手段４２を二箇所設けている。
以下、各整形手段の構成例について説明する。 <2> Shaping means The shaping means 42 is a means for shaping the surface of the material A on the belt conveyor 10.
When the material A flowing on the belt conveyor 10 includes a material having a large particle size such as gravel, the gravel passes through the gate constituting the loading height adjusting means 41 so that the height of the material is constant. There is a possibility that it cannot be kept.
Therefore, by using the shaping means 42 provided separately, the surface of the material A after passing through the gate is leveled, so that it is possible to obtain an effect of keeping the material loading height constant.
In this embodiment shown in FIG. 3A, two shaping means 42 are provided.
Hereinafter, a configuration example of each shaping unit will be described.

＜２．１＞ローラを用いた構成
ベルトコンベア１０の進行方向に向かって手前側に設けた整形手段４２は、上下に伸縮する弾性部材４２１と、前記弾性部材４２１の下方に設けて、ベルトコンベア１０上の材料Ａの表面を均すことが可能なローラ４２２でもって構成しており、弾性部材４２１の弾性力でもってローラ４２２を常に材料Ａに接触させた状態としている。
この構成によれば、材料Ａの高さに応じてローラ４２２が上下に移動しつつ、該ローラ４２２の回転でもってローラ４２２に接触する材料Ａの表面を均して整形することができる。 <2.1> Configuration Using Rollers The shaping means 42 provided on the front side in the traveling direction of the belt conveyor 10 is provided with an elastic member 421 that expands and contracts in the vertical direction, and below the elastic member 421. 10 is composed of a roller 422 capable of leveling the surface of the material A, and the roller 422 is always in contact with the material A by the elastic force of the elastic member 421.
According to this configuration, the roller 422 moves up and down according to the height of the material A, and the surface of the material A in contact with the roller 422 can be uniformly shaped by the rotation of the roller 422.

＜２．２＞プレートを用いた構成
ベルトコンベア１０の進行方向に向かって奥側に設けた整形手段４２は、上下に伸縮する弾性部材４２１と、前記弾性部材４２１の下方に設けて、ベルトコンベア１０上の材料Ａの表面を均すことが可能なプレート４２３でもって構成しており、弾性部材４２１の弾性力でもってプレート４２３を常に材料Ａに面接触させた状態としている。
当該構成によれば、材料Ａの高さに応じてプレート４２３が上下に移動しつつ、該プレート４２３により材料Ａの表面を転圧することで材料Ａの表面を均して整形することができる。 <2.2> Configuration Using Plates The shaping means 42 provided on the back side in the traveling direction of the belt conveyor 10 is provided with an elastic member 421 that expands and contracts vertically and below the elastic member 421 to provide a belt conveyor. 10 is configured with a plate 423 capable of leveling the surface of the material A, and the plate 423 is always in surface contact with the material A by the elastic force of the elastic member 421.
According to this configuration, the surface of the material A can be uniformly shaped by rolling the surface of the material A with the plate 423 while the plate 423 moves up and down according to the height of the material A.

＜２．２．１＞プレートの形状例
プレート４２３の形状はベルトコンベア１０上の材料Ａの表面と面接触できる箇所を含んだ構成であれば如何なる形状を含んでもよいが、図３（ａ）に示すように、ベルトコンベア１０の進行方向に向かってプレート４２３の手前側を上側に曲げたそり形状としておけば、ベルト１１上の材料Ａを円滑に流しながら整形作業を行うことができたり、簡易的な積載高調整手段４１としての機能を兼用させたりすることもできる。 <2.2.1> Example of plate shape The shape of the plate 423 may include any shape as long as it includes a portion that can come into surface contact with the surface of the material A on the belt conveyor 10, but FIG. As shown in FIG. 3, if the front side of the plate 423 is bent upward in the direction of travel of the belt conveyor 10, the shaping operation can be performed while smoothly flowing the material A on the belt 11, The function as the simple stacking height adjusting means 41 can also be used.

＜２．２．２＞ＲＩ水分計の取付例
本発明では、ＲＩ水分計の取付位置をベルトコンベア１０上の材料Ａに対して計測作業が可能な位置であって、特に材料Ａとの間の距離を一定に保持できる位置であることが好ましい。
よって、本発明は、図３（ｂ）に示すように、プレート４２３の裏側に散乱型のＲＩ水分計３０ａを配置しておく構成とすることもできる。
この構成によれば、散乱型のＲＩ水分計３０ａとベルト１１の上を流れる材料Ａとの間の距離を前記プレートの厚さ（Ｔ）に相当する長さに保持することができるため、より計測精度の向上が期待できる。
また、前記した整形手段４２を経由した材料Ａの表面は平滑な状態が保たれているため、プレートの裏側に散乱型のＲＩ水分計３０ａを用いた構成としてもプレートと材料Ａとの間の不陸による計測値のブレは軽減される。 <2.2.2> RI Moisture Meter Mounting Example In the present invention, the RI moisture meter mounting position is a position where measurement work can be performed on the material A on the belt conveyor 10, and particularly between the material A and It is preferable that the position be able to maintain a constant distance.
Therefore, as shown in FIG. 3B, the present invention can be configured such that a scattering type RI moisture meter 30 a is disposed on the back side of the plate 423.
According to this configuration, the distance between the scattering type RI moisture meter 30a and the material A flowing on the belt 11 can be maintained at a length corresponding to the thickness (T) of the plate. Improvement in measurement accuracy can be expected.
Further, since the surface of the material A that has passed through the shaping means 42 is maintained in a smooth state, the structure between the plate and the material A can also be configured using a scattering type RI moisture meter 30a on the back side of the plate. Blurring of measured values due to unevenness is reduced.

＜２．２．３＞プレートと搬送ローラとの位置関係
また、散乱型のＲＩ水分計３０ａを配置してあるプレート４２３でもって材料Ａの計測を行う際には、この計測箇所を仮想線で示す搬送ローラ１２の直上にしておくと、ベルト１１が下方に撓むことはなく、よりプレート４２３と材料Ａとの密着性を高めることもできる。 <2.2.3> Positional relationship between the plate and the transport roller When measuring the material A with the plate 423 on which the scattering-type RI moisture meter 30a is arranged, this measurement point is indicated by a virtual line. If it is just above the conveying roller 12 shown, the belt 11 will not bend downward and the adhesion between the plate 423 and the material A can be further enhanced.

図４を参照しながら、本発明の第３実施例に係る水量計測システムについて説明する。
本実施例に係る水量計測システムにおいて、前記した第１実施例と異なる点は、本発明に係るＲＩ水分計３０を、透過型のＲＩ水分計３０ｂに変更してある点である。
透過型のＲＩ水分計３０ｂは、放射線を放出する棒状の線源３１ｂと、前記線源３１ｂによって計測対象から放出する中性子線を検出する検出器３２ｂとから具備してなる。
本発明において、線源３１ｂと検出器３２ｂの上下関係は限定しないが、本実施例では、線源３１ｂをベルトコンベア１０の上方に配置してベルト１１上の材料Ａに向かって放射線を放射可能に構成し、検出器３２ｂをベルト１１の裏側の所定の位置に固定している。 A water amount measurement system according to a third embodiment of the present invention will be described with reference to FIG.
In the water amount measurement system according to the present embodiment, the difference from the first embodiment described above is that the RI moisture meter 30 according to the present invention is changed to a transmission type RI moisture meter 30b.
The transmission type RI moisture meter 30b includes a rod-shaped radiation source 31b that emits radiation, and a detector 32b that detects a neutron beam emitted from the measurement target by the radiation source 31b.
In the present invention, the vertical relationship between the radiation source 31b and the detector 32b is not limited, but in this embodiment, the radiation source 31b can be arranged above the belt conveyor 10 to emit radiation toward the material A on the belt 11. The detector 32b is fixed at a predetermined position on the back side of the belt 11.

本発明は、前記した実施例の構成に限らず、以下のような変形例を採用することができる。   The present invention is not limited to the configuration of the embodiment described above, and the following modifications can be adopted.

＜１＞各手段の組合せと配置順の設計変更
本発明に係る計測補助装置４０を構成する、積載高調整手段４１および整形手段４２は、自由に組み合わせて使用することができ、またその配置順も矛盾のない範囲で選択することができる。
例えば、図５に示すように、ベルトコンベア１０上に供給した材料Ａについて整形手段４２を積載高調整手段４１よりも手前に配置してもよい。 <1> Combination of Means and Design Change of Arrangement Order The load height adjusting means 41 and the shaping means 42 constituting the measurement auxiliary device 40 according to the present invention can be used in any combination, and the arrangement order thereof. Can be selected within a consistent range.
For example, as shown in FIG. 5, the shaping means 42 may be disposed in front of the loading height adjusting means 41 for the material A supplied onto the belt conveyor 10.

＜２＞各手段の兼用
本発明に係る計測補助装置４０を構成する、積載高調整手段４１および整形手段４２の各手段について、それぞれを独立した部材で構成せずに１つの部材で複数の手段を兼用した態様としてもよい。
例えば、図３（ａ）（ｂ）に示す整形手段４２を構成するローラ４２２を、弾性部材４２１で取り付けずに所定の高さに位置決めした態様とすれば、前記ローラ４２２が積載高調整手段４１としての機能を発揮することもできる。 <2> Combined use of each means About each means of the stacking height adjusting means 41 and the shaping means 42 constituting the measurement auxiliary device 40 according to the present invention, each means is not constituted by independent members, but a plurality of means by one member. It is good also as an aspect which used both.
For example, if the roller 422 constituting the shaping means 42 shown in FIGS. 3A and 3B is positioned at a predetermined height without being attached by the elastic member 421, the roller 422 is placed on the load height adjusting means 41. It can also demonstrate the function as.

Ａ 材料
１０ ベルトコンベア
１１ ベルト
１２ 搬送ローラ
２０ 材料供給装置
３０ ＲＩ水分計
３０ａ 散乱型のＲＩ水分計
３０ｂ 透過型のＲＩ水分計
３１ｂ 線源
３２ｂ 検出器
４０ 計測補助装置
４１ 積載高調整手段
４２ 整形手段
４２１ 弾性部材
４２２ ローラ
４２３ プレート A Material 10 Belt conveyor 11 Belt 12 Conveying roller 20 Material supply device 30 RI moisture meter 30a Scattering type RI moisture meter 30b Transmission type RI moisture meter 31b Radiation source 32b Detector 40 Measurement auxiliary device 41 Stack height adjustment means 42 Shaping means 421 Elastic member 422 Roller 423 Plate

Claims (6)

材料の水量を計測するためのシステムであって、
ベルトコンベアと、
前記ベルトコンベア上に材料を供給する、材料供給装置と、
前記ベルトコンベア上の材料の水量を計測する、ＲＩ水分計と、
前記ＲＩ水分計での計測箇所上、または計測箇所よりも手前の位置に設ける、計測補助装置と、を少なくとも具備し、
前記計測補助装置が、
前記材料の積載高を調整可能な、積載高調整手段、および、
前記材料の表面を整形可能な、整形手段、
のうち、少なくとも何れか１つの手段を含んでなることを特徴とする、
水量計測システム。 A system for measuring the amount of water in a material,
A belt conveyor;
A material supply device for supplying material onto the belt conveyor;
An RI moisture meter for measuring the amount of water in the material on the belt conveyor;
A measurement auxiliary device provided at a measurement location on the RI moisture meter or at a position before the measurement location;
The measurement auxiliary device is
A load height adjusting means capable of adjusting the load height of the material; and
Shaping means capable of shaping the surface of the material;
Including at least one of the means,
Water volume measurement system. 前記積載高調整手段が、
ベルトコンベアの上方に離隔して配置するゲートであることを特徴とする、
請求項１に記載の水量計測システム。 The load height adjusting means is
It is a gate that is spaced apart above the belt conveyor,
The water amount measurement system according to claim 1. 前記整形手段が、
ベルトコンベアの上方に配置し、弾性力でもって上下に移動可能なローラであることを特徴とする、
請求項１または２に記載の水量計測システム。 The shaping means is
It is arranged above the belt conveyor and is a roller that can move up and down with elastic force,
The water amount measurement system according to claim 1 or 2. 前記整形手段が、
ベルトコンベアの上方に配置し、弾性力でもって上下に移動可能なプレートであることを特徴とする、
請求項１または２に記載の水量計測システム。 The shaping means is
It is arranged above the belt conveyor and is a plate that can move up and down with elastic force,
The water amount measurement system according to claim 1 or 2. 前記ベルトコンベアの進行方向における前記プレートの手前側を上側に曲げてあることを特徴とする、
請求項４に記載の水量計測システム。 The front side of the plate in the traveling direction of the belt conveyor is bent upward,
The water amount measurement system according to claim 4. 前記材料が、コンクリート骨材またはＣＳＧ材であることを特徴とする、
請求項１乃至５のうち何れか１項に記載の水量計測システム。 The material is a concrete aggregate or a CSG material,
The water amount measurement system according to any one of claims 1 to 5.
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