JPS63150608A - Pavement thickness detector - Google Patents
Pavement thickness detectorInfo
- Publication number
- JPS63150608A JPS63150608A JP29795586A JP29795586A JPS63150608A JP S63150608 A JPS63150608 A JP S63150608A JP 29795586 A JP29795586 A JP 29795586A JP 29795586 A JP29795586 A JP 29795586A JP S63150608 A JPS63150608 A JP S63150608A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- laser receiver
- roadbed
- distance
- laser beam
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Road Paving Machines (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、アスファルトフィニッシャ等ノ敷きならし
機械に用いられる舗装厚さ検出装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a pavement thickness detection device used in a leveling machine such as an asphalt finisher.
従来技術
アスファルトフィニッシャ等の敷きならし機械で路盤の
舗装を行なう場合に、舗装厚が目標値になっているかを
確認しつつ作業を行なう必要がある。そこで従来は、敷
きならし機械を運転する作業者とは別のシソクネスマン
がゲージ棒を舗装体中に差し込んで確認していた。しか
し、この方法では施工後の舗装体に傷がつくばかりか、
舗装厚を連続して確認することができず、確認作業自体
に熟練を要するものであり、これらの問題に対処するも
のとして特開昭61−95103号及び実開昭60−1
72808号等が提案されてはいる。BACKGROUND ART When paving a roadbed with a leveling machine such as an asphalt finisher, it is necessary to perform the work while checking whether the pavement thickness is within a target value. Conventionally, a person who operates the leveling machine and a separate worker inserts a gauge rod into the pavement to check. However, this method not only damages the pavement after construction, but also
It is not possible to continuously check the pavement thickness, and the checking process itself requires skill.To deal with these problems, Japanese Patent Application Laid-Open No. 61-95103 and Japanese Utility Model Application No. 60-1
No. 72808 and the like have been proposed.
この発明が解決すべき問題点
しかしながらこれらの公知技術でも、全て舗装前路盤を
基準として舗装厚みを推定しており、段差等路盤に連続
性が無ければ正しい値は得られず路盤に凹凸があればそ
のまま計測誤差となる欠点があった。Problems to be solved by this invention However, even with these known techniques, pavement thickness is estimated based on the roadbed before paving, and if there is no continuity in the roadbed such as a difference in level, correct values cannot be obtained, and if there are irregularities in the roadbed, an accurate value cannot be obtained. However, this method had the disadvantage of directly causing measurement errors.
そこで、この発明は前記の様な公知技術の不都合な点を
改善して、路盤の状態の影響を受けず、且つ設定が容易
で精度よく舗装厚みの計測が行ない得る舗装厚さ検出装
置を提供することを目的とする。Therefore, the present invention improves the disadvantages of the known techniques as described above, and provides a pavement thickness detection device that is not affected by the condition of the roadbed, is easy to set up, and can measure pavement thickness with high accuracy. The purpose is to
発明の構成
この発明による舗装厚さ検出装置は、路盤上方のフィニ
ッシャ移動位置に沿って路盤にほぼ平行なレーザ・ビー
ムを投射するレーザ投光器を設はフィニッシャの進行方
向前側には舗装前路盤に上下動変位自在に摺接すると共
にフィニッシャの所定前進距離毎に信号を出力する距離
検出器を設置し、この距離検出器から鉛直上方に延在す
る軸上に取付けられて自らの基準点とレーザ・ビーム受
光点との位置偏差を出力する第1レーザ受光器を設け、
またフィニッシャの進行方向後側には舗装径路盤に上下
動自在に摺接するピンチローラから所定長さ鉛直方向に
延在する軸上に取付けられ前記第1レーザ受光器と同じ
自己基準点とレーザ・ビーム受光点との偏差を出力する
第2レーザ受光器が設けられており、さらに演算装置に
おいて前記距離検出器の信号毎に第1レーザ受光器の出
力値を順次格納すると共に第2レーザ受光器が先行する
第1レーザ受光器の計測位置に到達する4f5(て同一
地点の出力差から舗装厚さを求めるものである。Structure of the Invention The pavement thickness detection device according to the present invention is provided with a laser projector that projects a laser beam substantially parallel to the roadbed along the finisher movement position above the roadbed. A distance detector is installed that slides in movable displacement and outputs a signal every predetermined advance distance of the finisher, and is mounted on a shaft extending vertically upward from the distance detector to connect its own reference point and laser beam. A first laser receiver is provided to output the positional deviation from the light receiving point,
Further, on the rear side in the direction of movement of the finisher, the laser receiver is mounted on a shaft that extends vertically for a predetermined length from a pinch roller that slides in sliding contact with the pavement path road bed so as to be able to move up and down. A second laser receiver is provided that outputs the deviation from the beam receiving point, and a calculation device sequentially stores the output value of the first laser receiver for each signal of the distance detector, and also outputs the output value of the first laser receiver for each signal of the distance detector. The pavement thickness is determined from the output difference at the same point at 4f5 (where the laser beam reaches the measurement position of the preceding first laser receiver).
実施例
以下、図示するこの発明の実施例により説明するQ
第1図に実施例の全体概略図を示したが、ここでアスフ
ァルト舗装を行なうフイニツシヤ1が舗装作業対象の基
礎工事が行なわれた路盤上て配置されている。作業現場
付近の所定位置てはレーザ投光器2が設けられ、このレ
ーザ投光器2はフイニツシヤ1の移動方向VC沿って路
盤にほぼ平行なレーザ・ビーム3を投射する。Embodiments The following will explain the present invention using the illustrated embodiments. It is placed upwards. A laser projector 2 is provided at a predetermined position near the work site, and this laser projector 2 projects a laser beam 3 substantially parallel to the roadbed along the moving direction VC of the finisher 1.
フィニッシャ1の進行方向やや前側には、距離検出器4
が取付けられており、この距離検出器4は舗装前路盤5
に上下動自在て摺接してフィニッシャ1の移動距離を計
測する。距離検出器4はロータリー・エンコーダ等で構
成され、後段で詳述する距離り毎に信号を出力する。A distance detector 4 is located slightly in front of the finisher 1 in the direction of movement.
is installed, and this distance detector 4 is connected to the roadbed 5 before paving.
The finisher 1 is movable up and down and comes into sliding contact with the finisher 1 to measure the moving distance of the finisher 1. The distance detector 4 is composed of a rotary encoder or the like, and outputs a signal for each distance, which will be described in detail later.
また、この距離検出器4には鉛直上方て所定長さ延在し
て当該距離検出器・1と共て上下摺動運動するロッド7
が取り付けられ、その上端には第1レーザ受光器8が取
り付けられている。The distance detector 4 also has a rod 7 extending vertically upward for a predetermined length and sliding vertically together with the distance detector 1.
is attached, and a first laser receiver 8 is attached to its upper end.
この第1レーザ受光器8は前述したレーザ投光器2から
投射されるレーザ・ビーム3を受光し、この受光点と当
該第1レーザ受光器8の所定高さ位置に設定された基準
点SOとの鉛直方向の偏差Xを出力する。This first laser receiver 8 receives the laser beam 3 projected from the laser projector 2 described above, and connects this light receiving point with a reference point SO set at a predetermined height position of the first laser receiver 8. Outputs the vertical deviation X.
また、距離検出器4から距離nLだけフイニツシヤ1の
進行方向後側には舗装復路盤6上を上下動自在に摺接す
るピンチローラ9が取付けられている。このピンチロー
ラ9ては前述したロッド7と同様に鉛直上方に所定高さ
延在するロッド10が取付けられ、その上端には第2レ
ーザ受光器11が取付けられている。Further, a pinch roller 9 is installed behind the distance detector 4 by a distance nL in the direction of movement of the finisher 1, and slides on the paving return roadbed 6 so as to be able to move up and down. A rod 10 extending vertically upward to a predetermined height is attached to the pinch roller 9, similar to the rod 7 described above, and a second laser receiver 11 is attached to the upper end of the rod 10.
この第2レーザ受光器11は前述した第1レーザ受光器
8に対して、進行方向と直角方向に位置をずらして設け
られており、該受光器8と同様)こレーザ・ビーム3を
受光し、この受光点と基準点So との鉛直方向の偏差
yを出力する。This second laser receiver 11 is provided at a position shifted from the first laser receiver 8 in the direction perpendicular to the traveling direction, and similarly to the laser receiver 8) receives the laser beam 3. , outputs the vertical deviation y between this light receiving point and the reference point So.
さらば、これらの各出力信号を処理する演算装置(図示
せず)を備えており、フイニツシヤ1の進行に伴って距
離検出器4が距離り毎て信号を出力すると、その時点毎
にレーザ受光器8の出力値Xをメモリー内に順次格納す
る。また、演算機は第1及び第2レーザ受光器8,11
間の距11nLから、第1レーザ受光器8が測定した特
定の位置から距離検出器4がn回信号を出力して第2レ
ーザ受光器11が当該位置に到達すると格納したXの値
とyの値との偏差を舗装厚さとして出力する。It is equipped with a calculation device (not shown) that processes each of these output signals, and when the distance detector 4 outputs a signal for each distance as the finisher 1 advances, the laser receiver 4 outputs a signal at each distance. 8 output values X are sequentially stored in memory. In addition, the computing unit includes first and second laser receivers 8 and 11.
From the distance 11nL between, the distance detector 4 outputs a signal n times from the specific position measured by the first laser receiver 8, and when the second laser receiver 11 reaches the position, the stored value of X and y The deviation from the value is output as the pavement thickness.
以上の構成において、−舗装厚さ検出装置を備えたフイ
ニソンヤlが進行するにつれて演算装置内で行なわれる
舗装厚さ算出過程について、第2図のフローチャートを
参照しながら説明する○距離検出器4は定った距離り毎
に信号を発し、この信号を受けとると(ステップa)、
演算装置は第1レーザ受光器8の出力値Xをその時のア
ドレスポインタの値mに従い、そのメモリー領域にXm
として書き込む(ステップb+c+d)と同時にアドレ
スポインタを1つ進めm+1としくステップe)、メモ
リー領域よりXm+1を読み出しくステップh)、第2
レーザ受光器11の出力値yとの差T=y−Xm+1を
演算し、Tを舗装厚みとして表示部に表示する(ステッ
プh、i。In the above configuration, the distance detector 4 will be described with reference to the flowchart in FIG. It emits a signal every fixed distance, and when it receives this signal (step a),
The arithmetic unit stores the output value X of the first laser receiver 8 in the memory area according to the value m of the address pointer at that time.
(step b+c+d) and at the same time advance the address pointer by one to m+1 in step e), read Xm+1 from the memory area in step h),
The difference T=y−Xm+1 from the output value y of the laser receiver 11 is calculated, and T is displayed on the display section as the pavement thickness (steps h and i).
j)。j).
また、アドレスポインタはリングカウンタでありn+1
を超えると再び1からカウントする(ステップf、g)
。Also, the address pointer is a ring counter and n+1
When it exceeds, count again from 1 (steps f, g)
.
こうして、第2レーザ受光器11が計測した値yと、第
1レーザ受光器8が現在位置よりnL千手前測った値の
差を表示することができ、nL =第1、第2レーザ受
光器8,11の距離とする事で、第2レーザ受光暮11
の位置での舗装厚を計測表示できる。In this way, it is possible to display the difference between the value y measured by the second laser receiver 11 and the value measured nL thousand moves before the current position by the first laser receiver 8, where nL = first and second laser receivers. By setting the distance to 8 and 11, the second laser light receiving distance is 11.
The pavement thickness at the location can be measured and displayed.
発明の効果
この発明による舗装厚さ検出装置の実施例は以上の通シ
であシ、次に述べる効果を挙げることができる。Effects of the Invention The embodiment of the pavement thickness detection device according to the present invention has the above-described advantages, and can bring about the following effects.
舗装前後の高さの変化をレーザ・ビームを基準に比較し
ている為、路盤の平担性の影響を全く受けずに正確な計
測が可能となる。また、レーザ・ビームは各水平位置で
の高さの計測原点を定めている・だけであう、路盤との
相対高さは受光器の受光範囲を外れなければ計測に無関
係な為、投光器の設置が容易となる。さらに、路盤が坂
にさしかかる様な点でも正確な計測が可能である。Since the change in height before and after paving is compared using a laser beam as a reference, accurate measurement is possible without being affected by the levelness of the roadbed. In addition, the laser beam only determines the origin of the height measurement at each horizontal position.The relative height to the roadbed is irrelevant to the measurement unless it is outside the receiving range of the receiver, so the installation of the projector is difficult. It becomes easier. Furthermore, accurate measurements can be made even at points where the roadbed approaches a slope.
第1図はこの発明の実施例を示す全体の概略図1・・フ
ィニッシャ、2・・レーザ投光器3・・レーザ・ビーム
、4・・距離検出器5・・舗装前路盤、6・・舗装径路
盤
7・・ロッド、8・・第1V−ザ受光器9・・ピンチロ
ーラ、10・・ロッド
11・・第2レーザ受光器。FIG. 1 is an overall schematic diagram showing an embodiment of the present invention. 1. Finisher, 2. Laser projector 3. Laser beam, 4. Distance detector 5. Pre-paving roadbed, 6. Pavement diameter. Roadbed 7: Rod, 8: First V-laser receiver 9: Pinch roller, 10: Rod 11: Second laser receiver.
Claims (1)
フイニツシヤ移動位置に沿つて路盤にほぼ平行なレーザ
・ビームを投射するレーザ投光器と、フイニツシヤの進
行方向前側に取付けられて舗装前路盤に上下動変位自在
に摺接しフイニツシヤの所定前進距離毎に信号を出力す
る距離検出器と、この距離検出器から所定長さ鉛直上方
に延在する軸上に取付けられて前記レーザ・ビームを受
光すると共に自らの基準点と前記レーザ・ビーム受光点
との位置偏差を出力する第1レーザ受光器と、前記フイ
ニツシヤの進行方向後側に取付けられて舗装後路盤に上
下動自在に摺接するピンチローラから所定長さ鉛直方向
に延在する軸上に取付けられると共に前記第1レーザ受
光器と同じ基準点を有し、レーザ・ビーム受光点と基準
点との位置偏差を出力する第2レーザ受光器と、 前記距離検出器の信号出力毎に順次第1レーザ受光器の
出力値を格納し、第2レーザ受光器が先行する第1レー
ザ受光器の計測済み位置に到達する毎に該当する格納さ
れた第1レーザ受光器出力値を読み出して双方の値の偏
差を算出する演算装置とを備えた舗装厚さ検出装置。(1) A laser projector is installed near the roadbed to be paved and projects a laser beam almost parallel to the roadbed along the position of the finisher moving above the roadbed; a distance detector that slides in vertically movable contact and outputs a signal every predetermined advance distance of the finisher; and a distance detector that is mounted on a shaft that extends vertically upward for a predetermined length from the distance detector to receive the laser beam. a first laser receiver that outputs the positional deviation between its own reference point and the laser beam receiving point, and a pinch roller that is attached to the rear side of the finisher in the direction of travel and that slides into vertically movable contact with the roadbed after paving. a second laser receiver that is mounted on a shaft extending vertically for a predetermined length, has the same reference point as the first laser receiver, and outputs a positional deviation between the laser beam receiving point and the reference point; , The output value of one laser receiver is sequentially stored for each signal output of the distance detector, and each time the second laser receiver reaches the measured position of the preceding first laser receiver, the corresponding stored value is stored. A pavement thickness detection device comprising: an arithmetic device that reads an output value of a first laser receiver and calculates a deviation between both values.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29795586A JPS63150608A (en) | 1986-12-15 | 1986-12-15 | Pavement thickness detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29795586A JPS63150608A (en) | 1986-12-15 | 1986-12-15 | Pavement thickness detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63150608A true JPS63150608A (en) | 1988-06-23 |
Family
ID=17853249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29795586A Pending JPS63150608A (en) | 1986-12-15 | 1986-12-15 | Pavement thickness detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63150608A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111288906A (en) * | 2020-03-18 | 2020-06-16 | 中国建筑土木建设有限公司 | Device for measuring virtual paving thickness of asphalt mixture and using method thereof |
-
1986
- 1986-12-15 JP JP29795586A patent/JPS63150608A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111288906A (en) * | 2020-03-18 | 2020-06-16 | 中国建筑土木建设有限公司 | Device for measuring virtual paving thickness of asphalt mixture and using method thereof |
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