JPH0145001B2 - - Google Patents
Info
- Publication number
- JPH0145001B2 JPH0145001B2 JP57182720A JP18272082A JPH0145001B2 JP H0145001 B2 JPH0145001 B2 JP H0145001B2 JP 57182720 A JP57182720 A JP 57182720A JP 18272082 A JP18272082 A JP 18272082A JP H0145001 B2 JPH0145001 B2 JP H0145001B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic metal
- pieces
- reference position
- target
- 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
- 239000002184 metal Substances 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 5
- 238000007689 inspection Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Machines For Laying And Maintaining Railways (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、鉄道の軌道検測に利用する基準位
置設定用ターゲツトの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a reference position setting target used for railway track inspection.
従来、東海道、山陽の両新幹線においては、軌
道の狂いの進み具合いを検知し管理するために高
速軌道検測車を使用し、数多くの測定項目を定期
的に検測することが行われている。そしてこの検
測データの解析用として、一定の基準地点を通過
したことを連続したデータ用紙に記入表示する目
的のために、検測車に装備されたレーザー光を用
いる光学式検知装置と、地上の軌道間に設置され
た地点検知反射板とによつて基準地点の位置の検
出と記録を行なつていた。
Conventionally, on both the Tokaido and Sanyo Shinkansen lines, high-speed track inspection vehicles have been used to regularly inspect numerous measurement items in order to detect and manage the progress of track deviations. . In order to analyze this inspection data, an optical detection device using a laser beam installed on the inspection vehicle and an optical detection device using a laser beam installed on the inspection vehicle are used to record and display the fact that a certain reference point has been passed on a continuous data sheet. The position of the reference point was detected and recorded using a point detection reflector installed between the tracks.
しかし、反射板の汚れや積雪によつて保守に費
用がかかると共に、時によつては全く使用が不可
能になる欠陥があつた。 However, the reflectors were expensive to maintain due to dirt and snow buildup, and in some cases, they had defects that made them completely unusable.
それに対して、その後の東北・上越の両新幹線
においては、前記の欠陥を改善するように本件発
明者の発明(特開昭57−104460号公報参照)を利
用し、高周波電流に基づく磁力線に感応して渦電
流を発生させるターゲツトをを軌道内に沿つて一
定距離(例えば1キロメートル)毎に基準位置に
設置する一方、軌道上を高速走行する軌道検測車
には磁気センサ駆動制御装置および前記渦電流を
検知する磁気センサを載置して基準位置を逐次検
測し、データ用紙にレールの変位、変形等の数多
の測定項目を連続的に検出表示する信号波形等と
共に、基準位置を順次に記入表示して、前記の測
定項目の検討を容易にするようにしている。 On the other hand, later Tohoku and Joetsu Shinkansen trains utilized the invention of the present inventor (see Japanese Patent Application Laid-Open No. 104460/1983) to improve the above-mentioned defects, and developed a system that is sensitive to magnetic lines of force based on high-frequency current. Targets that generate eddy currents are installed at reference positions along the track at fixed distances (for example, 1 kilometer), while a track inspection vehicle running at high speed on the track is equipped with a magnetic sensor drive control device and the above-mentioned target. A magnetic sensor that detects eddy currents is installed to sequentially measure the reference position, and the reference position is recorded on a data sheet along with signal waveforms that continuously detect and display numerous measurement items such as rail displacement and deformation. The items are filled in and displayed in order to facilitate examination of the measurement items.
この特開昭57−104460号公報に記載の発明によ
れば、全天候型で積雪下でも充分な機能を発揮す
るが、それに使用していたターゲツト、時速が
200Km以上の高速で走行する検測車に対して前記
渦電流を発生させるために、一個の平板状の磁性
金属体を設けていたため、軌道内に分岐レール、
通信用地上子、その他の磁性金属体が存在する場
合、それらのものも総て磁気センサで検出してし
まい、存在するそれらの磁性金属体とターゲツト
との区別が信号を記録するデータ用紙への記入表
示で判別がつきにくくなつてしまうという問題が
あつた。
The invention described in JP-A-57-104460 is all-weather and fully functional even under snow, but the target speed
In order to generate the above-mentioned eddy current for inspection vehicles traveling at high speeds of 200 km or more, a single flat magnetic metal body was installed, so branch rails,
If there are communication ground elements or other magnetic metal objects, they will all be detected by the magnetic sensor, and the distinction between the existing magnetic metal objects and the target will be difficult to record on the data paper that records the signal. There was a problem that it became difficult to distinguish between the entries and the display.
この発明は前記課題を解決するために開発され
たもので、発明の構成を実施例の対応する第3〜
7図及び第9図を用いて説明すると、この発明は
前後両側にボルト等による取付用脚部を有し誘電
率が低く電波透過性の良好な材料からなる本体1
に、その頭部部分の上面に近接して左右方向に高
速走行する磁力線に感応して渦電流を発生する平
板状の磁性金属体2を埋設した鉄道用基準位置設
定用ターゲツトにおいて、前記磁性金属体2を磁
力線の走行方向に対して直角に並置され磁力線の
通過幅がほぼ等しい左右二個の磁性金属体部片、
3,3:4,4:5′,5′にて構成し、該二個の
部片の間に渦電流を発生しない非導電性部分6を
設け、該部分の幅を前記通過幅に対してほぼ等し
いかより広くし、前記二個の部片を横切るように
高速走行する磁気センサに、頂部にM字状部を有
するダブル信号波形12を発生させることを特徴
とするものである。
This invention was developed to solve the above problems, and the configuration of the invention is described in the corresponding third to third embodiments.
Explaining this using FIGS. 7 and 9, the present invention includes a main body 1 which has mounting legs with bolts or the like on both the front and back sides and is made of a material with a low dielectric constant and good radio wave transparency.
In a railroad reference position setting target in which a flat magnetic metal body 2 that generates an eddy current in response to lines of magnetic force running in the left and right directions at high speed is buried close to the upper surface of the head portion of the target, the magnetic metal two left and right magnetic metal body pieces arranged perpendicularly to the running direction of the magnetic lines of force and having substantially the same width through which the lines of magnetic force pass;
3, 3:4, 4:5', 5', a non-conductive part 6 that does not generate eddy current is provided between the two parts, and the width of this part is set relative to the passage width. The double signal waveform 12 having an M-shaped portion at the top is generated by a magnetic sensor running at high speed across the two pieces.
この発明は、前記のような構成を有しているの
で、高速走行する軌道検測車に磁気センサ駆動制
御装置および磁気センサを載置して、基準位置に
設置されたターゲツトの磁性金属体2を構成する
二個の磁性金属体部片3,3:4,4:5,5:
5′,5′の上を横切るように左右に通過させる
と、該二個の部片の間に存在し該部片の通過幅に
対してほぼ等しいか、より広い幅をもつた非誘導
性部分6の存在によつて、磁気センサに頂部にM
字状部を有するダブル信号波形12を明りように
発生させることができる。
Since the present invention has the above-described configuration, a magnetic sensor drive control device and a magnetic sensor are mounted on a track inspection vehicle running at high speed, and the target magnetic metal body 2 installed at a reference position is Two magnetic metal body parts 3, 3: 4, 4: 5, 5:
5', 5' when passed from side to side to the left and right, a non-inductive material exists between the two pieces and has a width that is approximately equal to or wider than the passing width of the piece. The presence of portion 6 allows the magnetic sensor to have M at the top.
A double signal waveform 12 having a character-shaped portion can be clearly generated.
この発明のターゲツトの実施例を図面に基づい
て説明すると、先ず第1図、第2図に示すものは
従来型式のターゲツト本体1を構成する材料は誘
電率が低く電波透過性の良好な例えば不飽和ポリ
エステル樹脂をガラス繊維に含浸させたガラス繊
維強化プラスチツク等から成り、図示のような形
状に一体成形品として形成される。なお7は前後
両側の取付用脚部に設けた取付ボルトを通るボル
ト穴である。そしてターゲツト本体1の頭部部分
の上面に近接した場所には、第1図で左右方向に
走行される軌道検測車の磁気センサ駆動制御装置
によつて生じる磁力線に感応する適宜の大きさの
平面部を有する磁性金属体2を設けている。
Embodiments of the target of the present invention will be explained based on the drawings. First, the target body 1 of the conventional type shown in FIGS. It is made of glass fiber-reinforced plastic made by impregnating glass fiber with saturated polyester resin, and is formed as an integrally molded product in the shape shown in the figure. Note that 7 is a bolt hole through which the mounting bolts provided on both the front and rear mounting legs are passed. In a place close to the upper surface of the head portion of the target body 1, there is a device of an appropriate size that is sensitive to the magnetic lines of force generated by the magnetic sensor drive control device of the track inspection vehicle that runs in the left and right directions in Fig. 1. A magnetic metal body 2 having a flat portion is provided.
これに対して本発明のターゲツトは、第3〜7
図に示すように本体1の頭部部分の磁性金属体2
を、軌道検測車の走行方向に対して直角に並置さ
れ磁力線の通過幅がほぼ等しい左右二つの部片に
分け、この二つの部片の間に渦電流の発生しない
非導電性部分6を設け、しかもその非導電性部分
6の幅はなるべく広くすることが有効で、前記通
過幅に対してほぼ等しいか、より広くする。即ち
第3図に示すものでは、同形の矩形状の磁性金属
体部片3を二つ並べてその中間に非導電性部分6
が生ずるように、前記のプラスチツク等からなる
ターゲツト本体1の中に埋設内蔵してある。第4
図のものでは二個の磁性金属体部片4,4の形状
をコ字形にして端部を互いに対向させ、その両端
部には適宜の有孔部8を設けており、第5図のも
のでは磁性金属体部片)5,5を狭い接続部で連
結し全体としてコ字形となし、その接続部に適宜
の有孔部8を設けてある。第6図のものでは磁性
金属体部片5,5の両端を狭い接続部で連結し、
全体としてロ字形となしその接続部に適宜の有孔
部8を設けてある。このような有孔部8を設けた
のは、プラスチツク等からなるターゲツト本体1
との接合を強化するためである。第7図に示すも
のでは、同形の矩形状にこだわらず磁性金属体部
片5′,5′を二つ並べて非導電性部分6をできる
だけ広くし、部片5′の幅、即ち前記通過幅は磁
力線を検知し得る最小幅以上であれば任意であつ
て、両端を細い接続部で連結し、全体としてロ字
形又は、だ円形となすものである。この場合には
細い線状部で接続しているため有孔部8は不要で
ある。 In contrast, the targets of the present invention are
As shown in the figure, a magnetic metal body 2 in the head part of the main body 1
is divided into two left and right parts that are arranged perpendicularly to the running direction of the track inspection vehicle and have approximately the same width of passage of magnetic lines of force, and a non-conductive part 6 in which no eddy current is generated is placed between these two parts. It is effective to make the width of the non-conductive portion 6 as wide as possible, and to make it approximately equal to or wider than the passage width. That is, in the case shown in FIG. 3, two rectangular magnetic metal pieces 3 of the same shape are arranged side by side, and a non-conductive part 6 is placed between them.
It is embedded in the target body 1 made of the above-mentioned plastic or the like so that the target body 1 is made of plastic or the like. Fourth
In the figure, the two magnetic metal pieces 4, 4 are U-shaped with their ends facing each other, and appropriate perforated portions 8 are provided at both ends. In this case, the magnetic metal pieces 5, 5 are connected at a narrow connection part to form a U-shape as a whole, and a suitable perforated part 8 is provided at the connection part. In the one shown in FIG. 6, both ends of the magnetic metal body pieces 5, 5 are connected by a narrow connection part,
The overall shape is square-shaped, and appropriate perforated portions 8 are provided at the connecting portions. The perforated portion 8 is provided in the target body 1 made of plastic or the like.
This is to strengthen the bond with. In the one shown in FIG. 7, two magnetic metal body pieces 5', 5' are arranged side by side without being limited to the same rectangular shape, and the non-conductive part 6 is made as wide as possible, and the width of the piece 5', that is, the passage width is The width is arbitrary as long as it is at least the minimum width that allows detection of lines of magnetic force, and both ends are connected by a thin connection part to form a rectangular shape or an oval shape as a whole. In this case, the perforated portion 8 is not necessary because the connection is made by a thin linear portion.
第3〜7図に示すような構造にした場合の作用
効果を軌道検測車上に示される信号波形によつて
説明すると、第8図に示すように一般に信号波形
にはノイズ9が絶えず発生しており、第1,2図
に示した従来型式の磁性金属体2による信号波形
10は磁気センサによつてノイズ波形9とは鮮明
に識別可能であり、一定距離毎に設けたターゲツ
ト位置を的確に記入表示することができたが、軌
道内に他の磁性金属体が存在すると、信号波形1
0に類似する疑似波形11が発生し、そのために
ターゲツト位置との誤認を生ずる難点があつた。 To explain the effects of the structure shown in Figures 3 to 7 using the signal waveform shown on the track inspection car, noise 9 is generally constantly generated in the signal waveform as shown in Figure 8. The signal waveform 10 produced by the conventional magnetic metal body 2 shown in FIGS. Although it was possible to accurately fill in and display, if there is another magnetic metal object in the orbit, the signal waveform 1
There was a problem in that a pseudo waveform 11 similar to 0 was generated, resulting in misidentification as the target position.
それに対して磁性金属体を本発明のように二個
の磁性金属片3,4,5,5′に分割し、それら
の部片の間に非導電性部分6を設けることによ
り、第9図に図示するような頂部にM字状部をも
つたダブル信号波形12が記入表示され、凝似波
形11との識別確認が明確にできるようになつ
た。 On the other hand, by dividing the magnetic metal body into two magnetic metal pieces 3, 4, 5, 5' as in the present invention and providing a non-conductive part 6 between these pieces, as shown in FIG. A double signal waveform 12 having an M-shaped portion at the top as shown in FIG.
ここで、磁性金属体の材料としては純鉄などが
性能的に勝れており、更にその材質を鉄−コバル
ト系等の合金にすることにより、従来検測車上の
磁気センサとターゲツト上面との間隔が、例えば
約50mm位が最大飛距離の磁力線到達感度であつた
ものが、約200mm以上離れた高さから到達できる
ような高感度磁気センサに適合するものが得られ
た。なお、これらの磁性金属体部片はターゲツト
の頭部部分に埋設させるばかりでなく、単に頭部
部分の上面に面一になるように埋設するだけでも
よい。 Here, as the material for the magnetic metal body, pure iron is superior in terms of performance, and by making the material an alloy such as iron-cobalt, it is possible to connect the magnetic sensor on the conventional inspection vehicle to the top surface of the target. For example, a distance between the magnetic field lines of about 50 mm was the maximum sensitivity for reaching magnetic field lines, but now we have obtained a sensor that is suitable for high-sensitivity magnetic sensors that can reach magnetic lines of force from a height of about 200 mm or more. Note that these magnetic metal pieces may not only be buried in the head portion of the target, but may also be simply buried flush with the upper surface of the head portion.
この発明は、以上のような構成と作用を有して
いるので、ターゲツト内部の磁性金属体の特殊な
構成、特に高速走行する磁力線の走行方向に対し
て直角にに並置されたた二個の磁性金属体部片の
磁力線の通過幅が、両部片間に介在される非導電
性部分の幅とほぼ等しいか、より広くしてあり、
高速走行する磁気センサに頂部にM字状部を有す
るダブル信号波形を確実に発生させることができ
る。
This invention has the above-mentioned structure and operation, and therefore it uses a special structure of the magnetic metal body inside the target, especially two magnetic metal bodies arranged in parallel at right angles to the traveling direction of the magnetic field lines traveling at high speed. The width through which the lines of magnetic force pass through the magnetic metal piece is approximately equal to or wider than the width of the non-conductive part interposed between the two pieces,
A double signal waveform having an M-shaped portion at the top can be reliably generated in a magnetic sensor running at high speed.
そのため、この発明によればバラツキのない明
確なダブル信号波形が得られ、ターゲツトの存在
を軌道内に存在する他の磁性金属体等と区別する
ことが可能となり、ターゲツトのダブル信号波形
のみを容易に認識することができ、従来型式のタ
ーゲツトのように絶えず補正とチエツクを要する
ことがなくなり、高速鉄道の軌道検測上極めて大
きな効果を奏することができる。 Therefore, according to the present invention, a clear double signal waveform with no variation can be obtained, and it is possible to distinguish the presence of a target from other magnetic metal objects existing in the orbit. This eliminates the need for constant correction and checking as with conventional targets, making it extremely effective for high-speed railway track inspection.
第1図は従来型式のターゲツトの平面図、第2
図は同じく側面図、第3図は本発明のターゲツト
の一実施例を示す平面図、第4図ないし第7図は
本発明の他の実施例を示す平面図、第8図は従来
型式の信号波形図、第9図は本発明の信号波形図
である。
1:ターゲツト本体、2:磁性金属体、3,
4,5,5′:磁性金属体部片、6:非導電性部
分、7:ボルト穴、8:有孔部、9:ノイズ波
形、10:従来型式の信号波形、11:凝似波
形、12:ダブル信号波形。
Figure 1 is a top view of a conventional target; Figure 2 is a top view of a conventional target;
3 is a plan view showing one embodiment of the target of the present invention, FIGS. 4 to 7 are plan views showing other embodiments of the present invention, and FIG. 8 is a plan view of a conventional target. Signal Waveform Diagram FIG. 9 is a signal waveform diagram of the present invention. 1: target body, 2: magnetic metal body, 3,
4, 5, 5': magnetic metal body piece, 6: non-conductive part, 7: bolt hole, 8: perforated part, 9: noise waveform, 10: conventional signal waveform, 11: analogous waveform, 12: Double signal waveform.
Claims (1)
し、誘電率が低く電波透過性の良好な材料からな
る本体に、その頭部部分の上面に近接して左右方
向に高速走行する磁力線に感応して渦電流を発生
する平板状の磁性金属体を埋設した鉄道用基準位
置設定用ターゲツトにおいて、前記磁性金属体を
磁力線の走行方向に対して直角に並置され磁力線
の通過幅がほぼ等しい左右二個の磁性金属体部片
にて構成し、該二個の部片の間に渦電流を発生し
ない非導電性部分を設け、該部分の幅を前記通過
幅に対してほぼ等しいか、より広くし、前記二個
の部片を横切るように高速走行する磁気センサ
に、頂部にM字状部を有するダブル信号波形を発
生させることを特徴とする鉄道用基準位置設定用
ターゲツト。 2 並置された二個の磁性金属体部片を夫々コ字
形として端部を互に対向させて本体に埋設した特
許請求の範囲第1項記載の鉄道用基準位置設定用
ターゲツト。 3 並置された二個の磁性金属体部片の一端又は
両端を互に接続して本体に埋設した特許請求の範
囲第1項記載の鉄道用基準位置設定用ターゲツ
ト。 4 並置された二個の磁性金属体部片の両端を線
状にして接続し本体に埋設した特許請求の範囲第
1項記載の鉄道用基準位置設定用ターゲツト。[Scope of Claims] 1. A main body that has mounting legs with bolts etc. on both the front and back sides and is made of a material with a low dielectric constant and good radio wave transparency, and is mounted in the left and right direction close to the top surface of the head part. In a railroad reference position setting target in which a flat magnetic metal body that generates an eddy current in response to magnetic lines of force traveling at high speed is buried, the magnetic metal body is juxtaposed at right angles to the running direction of the magnetic lines of force so that the lines of magnetic force pass through the target. Consisting of two left and right magnetic metal body pieces with approximately equal widths, a non-conductive part that does not generate eddy current is provided between the two pieces, and the width of the part is set relative to the passage width. For setting a reference position for railways, the magnetic sensor is made substantially equal in width or wider in width, and generates a double signal waveform having an M-shaped portion at the top on a magnetic sensor that travels at high speed across the two pieces. Target. 2. A railway reference position setting target as claimed in claim 1, wherein two juxtaposed magnetic metal pieces are each shaped like a U-shape and are embedded in the main body with their ends facing each other. 3. The railway reference position setting target according to claim 1, wherein one or both ends of two juxtaposed magnetic metal pieces are connected to each other and embedded in the main body. 4. A railway reference position setting target according to claim 1, wherein both ends of two juxtaposed magnetic metal pieces are connected in a linear manner and embedded in the main body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18272082A JPS5973360A (en) | 1982-10-20 | 1982-10-20 | Target for setting reference position for railway |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18272082A JPS5973360A (en) | 1982-10-20 | 1982-10-20 | Target for setting reference position for railway |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5973360A JPS5973360A (en) | 1984-04-25 |
JPH0145001B2 true JPH0145001B2 (en) | 1989-10-02 |
Family
ID=16123257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18272082A Granted JPS5973360A (en) | 1982-10-20 | 1982-10-20 | Target for setting reference position for railway |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5973360A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102679135B1 (en) * | 2018-08-28 | 2024-06-27 | 인에이블 주식회사 | System for Measuring Rail Displacement |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57104460A (en) * | 1980-12-18 | 1982-06-29 | Asaoka Kk | Method and apparatus for detecting and measuring reference position for railway |
-
1982
- 1982-10-20 JP JP18272082A patent/JPS5973360A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57104460A (en) * | 1980-12-18 | 1982-06-29 | Asaoka Kk | Method and apparatus for detecting and measuring reference position for railway |
Also Published As
Publication number | Publication date |
---|---|
JPS5973360A (en) | 1984-04-25 |
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