JPS6316991B2 - - Google Patents
Info
- Publication number
- JPS6316991B2 JPS6316991B2 JP58050013A JP5001383A JPS6316991B2 JP S6316991 B2 JPS6316991 B2 JP S6316991B2 JP 58050013 A JP58050013 A JP 58050013A JP 5001383 A JP5001383 A JP 5001383A JP S6316991 B2 JPS6316991 B2 JP S6316991B2
- Authority
- JP
- Japan
- Prior art keywords
- induction motor
- screen
- phase induction
- plant
- plant body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000006698 induction Effects 0.000 claims description 14
- 239000010426 asphalt Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 239000000428 dust Substances 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Road Paving Machines (AREA)
- Combined Means For Separation Of Solids (AREA)
Description
【発明の詳細な説明】
本発明は、アスフアルト合材を製造するアスフ
アルトプラントにおいて各種粒径別に骨材を篩分
けるスクリーンの運転停止方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for shutting down a screen that sieves aggregate according to various particle sizes in an asphalt plant that produces asphalt mixture.
アスフアルトプラントは、骨材を加熱乾燥する
ドライヤ、該ドライヤから排出される含塵排ガス
中のダストを捕捉する集塵装置、加熱骨材等のア
スフアルト合材の素材を貯蔵・計量・混合するプ
ラント本体から成つている。プラント本体１は、
ホツトエレベーター２から供給される骨材を各種
粒径別に篩分けるスクリーン３と、該スクリーン
３によつて篩分けれた骨材を各種粒径別に貯蔵す
る貯蔵ビン４と、石粉エレベータ５を介して供給
される石粉を貯蔵する石粉貯蔵ビン６と、ダスト
エレベータ７を介して供給されるダストを貯蔵す
るダストビン８、並びに前記貯蔵ビン中の素材及
びアスフアルトを計量する各種計量機９とアスフ
アルト合材を混合製造する混合機１０等が架台１
１上に配設されており、プラント本体１が機高の
構造となつており、また骨材を篩分けるスクリー
ン３がプラント本体の最上段にあるため従来、ス
クリーン３の起振体１２を停止する場合、停止寸
前にプラント本体１が共振して水平方向に大きく
揺ぎ、好ましい停止状態でなかつた。 An asphalt plant consists of a dryer that heats and dries aggregate, a dust collector that captures dust in the dust-containing exhaust gas discharged from the dryer, and a plant that stores, measures, and mixes heated aggregate and other asphalt mixture materials. It consists of The plant body 1 is
A screen 3 that sieves the aggregate supplied from the hot elevator 2 according to various particle sizes, a storage bin 4 that stores the aggregate sieved by the screen 3 according to various particle sizes, and a stone powder elevator 5. A dust bin 8 stores the dust supplied via the dust elevator 7, and various weighing machines 9 weigh the materials and asphalt in the storage bins, and the asphalt mixture is mixed. The mixer 10 etc. to be manufactured is mounted on the stand 1
1, the plant body 1 has a machine-height structure, and the screen 3 that sieves aggregate is located at the top of the plant body, so conventionally, the vibrating body 12 of the screen 3 was stopped. In this case, the plant body 1 resonated and shook significantly in the horizontal direction just before stopping, resulting in an undesirable stopped state.
本発明は上記の点に鑑み、アスフアルトプラン
トのスクリーン運転停止時プラント本体との共振
によつてプラント本体が水平方向に大きく揺ぐこ
とを極力防ぐことを目的とするものであり、即
ち、本発明は、各種粒径別に骨材を篩分けるスク
リーンを装備した貯蔵ビンと、該貯蔵ビンの下位
に設けた計量機、及び混合機等を架台上に載置し
たプラント本体において、前記スクリーンの起振
体を駆動する三相誘導電動機の運転停止ボタン
ON後、慣性で回転する三相誘導電動機の回転数
がプラント本体との共振域に入る直前に前記三相
誘導電動機に逆相制動をかけてプラント本体の横
揺れを防ぐようにしたアスフアルトプラントにお
けるスクリーン運転停止方法を提案するものであ
る。 In view of the above points, an object of the present invention is to prevent as much as possible the plant main body from shaking horizontally due to resonance with the plant main body when the screen operation of an asphalt plant is stopped. In a plant body equipped with a storage bin equipped with a screen that sieves aggregates according to various particle sizes, a weighing machine installed below the storage bin, a mixer, etc., mounted on a stand, vibration of the screen is used. Stop button for the three-phase induction motor that drives the body
In an asphalt plant, after turning on, anti-phase braking is applied to the three-phase induction motor, which rotates due to inertia, just before the rotational speed of the three-phase induction motor enters the resonance range with the plant body to prevent the plant body from rolling. This paper proposes a method for stopping screen operation.
プラント本体１の共振はプラント本体１の大き
さによつても異なるがスクリーン３の起振体１２
を駆動させる三相誘導電動機の回転数200rPm前
後から起り始めて三相誘導電動機の回転停止まで
激しい横揺れが続くが、実測定では、この水平振
動の加速度はアスフアルト合材の出荷能力
60TON／Ｈ（スクリーンの篩能力60TON／Ｈ）
のプラント本体においては約7.1〜39.5gal（cm／
S2）であり、ピーク値の加速度39.5galは気象庁
震度階によれば中震に相当するものである。 The resonance of the plant body 1 varies depending on the size of the plant body 1, but the resonance of the vibrator 12 of the screen 3
Violent horizontal vibrations begin at around 200 rPm of the rotation speed of the three-phase induction motor that drives the motor and continue until the three-phase induction motor stops rotating, but in actual measurements, the acceleration of this horizontal vibration is equivalent to the shipping capacity of the asphalt composite material.
60TON/H (screen sieving capacity 60TON/H)
Approximately 7.1 to 39.5 gal (cm/
S 2 ), and the peak acceleration of 39.5 gal corresponds to a medium earthquake according to the Japan Meteorological Agency seismic intensity scale.
本発明では、この共振域を速やかに通過させる
ことによつてプラント本体１の水平振動を極力小
さくしようとするもので、スクリーン３の起振体
１２を駆動する三相誘導電動機の運転停止ボタン
ON後、慣性で回転する三相誘導電動機の回転数
がプラント本体１との共振域である200rPmなる
直前に三相誘導電動機のいづれか二相を正逆マグ
ネツトスイツチにより短時間ふりかえて三相誘導
電動機に制動をかけるようにする。本発明方法を
前記した同一のプラント本体で実施した実測定で
は、0.5秒の逆相制動での水平振動加速度は6.3〜
7.1galであり、ピーク値の7.1galは軽震に相当す
るものであつて、顕著な効果がみられた。 In the present invention, the horizontal vibration of the plant body 1 is minimized by passing through this resonance region quickly.
After turning on, just before the rotational speed of the three-phase induction motor, which rotates due to inertia, reaches 200 rPm, which is the resonance range with the plant main body 1, any two phases of the three-phase induction motor are turned around for a short time using a forward/reverse magnetic switch to induce three-phase induction. Apply braking to the electric motor. In actual measurements carried out using the method of the present invention on the same plant body as described above, the horizontal vibration acceleration under anti-phase braking for 0.5 seconds was 6.3~
The peak value of 7.1 gal corresponds to a light earthquake, and a remarkable effect was seen.
以上のように、本発明はスクリーン３の起振体
１２を駆動する三相誘導電動機を停止させる時、
三相誘導電動機の回転数がプラント本体１との共
振域に入る直前に逆相制動をかけることによつ
て、共振域を速やかに通過できプラント本体１の
共振による水平振動を極力小さくできるものであ
る。 As described above, when the present invention stops the three-phase induction motor that drives the vibrator 12 of the screen 3,
By applying anti-phase braking just before the rotation speed of the three-phase induction motor enters the resonance region with the plant body 1, the resonance region can be quickly passed through, and the horizontal vibration caused by the resonance of the plant body 1 can be minimized. be.
第１図はアスフアルトプラントのプラント本体
の正面図である。
１……プラント本体、３……スクリーン、１２
……起振体。
FIG. 1 is a front view of the main body of an asphalt plant. 1...Plant body, 3...Screen, 12
... vibratory body.
Claims (1)
備した貯蔵ビンと、該貯蔵ビンの下位に設けた計
量機、及び混合機等を架台上に載置したプラント
本体において、前記スクリーンの起振体を駆動す
る三相誘導電動機の運転停止ボタンON後、慣性
で回転する三相誘導電動機の回転数がプラント本
体との共振域に入る直前に前記三相誘導電動機に
逆相制動をかけるようにしたことを特徴とするア
スフアルトプラントにおけるスクリーン運転停止
方法。1 In a plant body equipped with a storage bin equipped with a screen that sieves aggregates according to various particle sizes, a weighing machine installed below the storage bin, a mixer, etc. mounted on a pedestal, the vibrating body of the screen After turning on the stop button of the three-phase induction motor that drives the three-phase induction motor, anti-phase braking is applied to the three-phase induction motor just before the rotation speed of the three-phase induction motor that rotates due to inertia enters the resonance range with the plant body. A method for stopping screen operation in an asphalt plant, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5001383A JPS59177182A (en) | 1983-03-24 | 1983-03-24 | Stopping of screen operation in asphalt plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5001383A JPS59177182A (en) | 1983-03-24 | 1983-03-24 | Stopping of screen operation in asphalt plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59177182A JPS59177182A (en) | 1984-10-06 |
| JPS6316991B2 true JPS6316991B2 (en) | 1988-04-12 |
Family
ID=12847108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5001383A Granted JPS59177182A (en) | 1983-03-24 | 1983-03-24 | Stopping of screen operation in asphalt plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59177182A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0523602Y2 (en) * | 1987-08-05 | 1993-06-16 | ||
| JPH028152A (en) * | 1988-06-27 | 1990-01-11 | Toray Ind Inc | Stopping device for rotation of winder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121121A (en) * | 1974-08-15 | 1976-02-20 | Kensetsu Kikai Chosa Kk | SHINDOKUIUCHI KINIOKERU SEIDOSOCHI |
| JPS54144425A (en) * | 1978-05-04 | 1979-11-10 | Tokyo Koki Kk | Asphalt plant |
-
1983
- 1983-03-24 JP JP5001383A patent/JPS59177182A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121121A (en) * | 1974-08-15 | 1976-02-20 | Kensetsu Kikai Chosa Kk | SHINDOKUIUCHI KINIOKERU SEIDOSOCHI |
| JPS54144425A (en) * | 1978-05-04 | 1979-11-10 | Tokyo Koki Kk | Asphalt plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59177182A (en) | 1984-10-06 |
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