JPS5827003A - Method and apparatus for aligning rail - Google Patents
Method and apparatus for aligning railInfo
- Publication number
- JPS5827003A JPS5827003A JP12536881A JP12536881A JPS5827003A JP S5827003 A JPS5827003 A JP S5827003A JP 12536881 A JP12536881 A JP 12536881A JP 12536881 A JP12536881 A JP 12536881A JP S5827003 A JPS5827003 A JP S5827003A
- Authority
- JP
- Japan
- Prior art keywords
- rail
- track
- amount
- reference line
- lateral displacement
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B35/00—Applications of measuring apparatus or devices for track-building purposes
- E01B35/02—Applications of measuring apparatus or devices for track-building purposes for spacing, for cross levelling; for laying-out curves
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/16—Guiding or measuring means, e.g. for alignment, canting, stepwise propagation
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、軌道の通り整正方法及び装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a track alignment method and apparatus.
軌道の通り整正においては、曲線部の通り整正と直線部
の通り整正があるが、まず曲線部の通り整正について説
明する。There are two types of track alignment: curved section alignment and straight line alignment. First, curved area alignment will be explained.
第１図は軌道の横変位量等の定義の説明のための図であ
り、軌道の曲線部の何れか一方のレールを基準レールと
し、それを半径Ｒの円弧Ｓで表わし、長さ文の基準線Ｋ
ｍを、その両端）（−ｍが円弧Ｓ上に位置するように配
置し、皇準線Ｋｍの中心点しより基準線に！Ｉｌに立て
た垂線が円弧Ｓと交わる点をＮとすると、Ｎ１の長さが
円弧Ｓの基準線ＫＩＩｌに対する横変位量Ｖであ番。こ
の横変位量Ｖが円弧Ｓの半径に較べて非常に小さい場合
には、Ｖ＝１２１Ｂｒから横変位量Ｖを求めることがで
きる。Figure 1 is a diagram for explaining the definition of the amount of lateral displacement of the track, etc., where one rail on the curved part of the track is taken as a reference rail, it is represented by an arc S with radius R, and the length is expressed as follows. Reference line K
m, its both ends) (-m are located on the arc S, and the center point of the imperial line Km is set as the reference line! If the point where the perpendicular line erected to Il intersects the arc S is N, The length of N1 is the lateral displacement amount V of the arc S with respect to the reference line KIIl.If this lateral displacement amount V is very small compared to the radius of the arc S, find the lateral displacement amount V from V=121Br. be able to.
また、基準線Ｋ１１１上の中心点り以外の点、例えば基
準線ＫＩｌｌの長さ吏を、長さａと長さｂに分二割する
点Ｌ１において、基準線Ｋｌｌ＋に立てた垂線が円弧Ｓ
と交わる点をＮ９とすると、Ｌ’ Ｎ’の長さが基準線
Ｋｍに対する円弧Ｓ上のＮ９点の横変荀量ｖ１である。Also, at a point other than the center point on the reference line K111, for example, at a point L1 that divides the length of the reference line KIll into length a and length b, a perpendicular line erected to the reference line Kll+ is an arc S.
Let N9 be the point where it intersects with the reference line Km, then the length of L'N' is the lateral displacement v1 of the N9 point on the arc S with respect to the reference line Km.
このＮ７点の横変位量Ｖ２が円弧Ｓの半径Ｒに較べて非
常に小さい場合には、■’−ａｂ／２ＲからＮ１点の横
変位量ｖ′を求めることができる。If the lateral displacement amount V2 of the N7 point is very small compared to the radius R of the circular arc S, the lateral displacement amount v' of the N1 point can be determined from ■'-ab/2R.
また、第１図において、基準線Ｋｍの長さの延長上に一
点Ｐを取り、Ｋｐを基準、として、点Ｐにおいて、基準
線Ｋｌ）に円弧Ｓ側に立てた垂線が円弧Ｓと交わる点を
Ｑとすると、Ｐｑの長さが、基準線Ｋｐに対する円弧Ｓ
上のＱ点の横変位量Ｖ ＩＩである。 ＭＥＩ ＝Ｃと
すると、このＱ点の横変位量Ｖ″が円弧Ｓの半径Ｒに較
べて非常に小さい場合ニハ、■”＝Ｃ（１＋Ｃ）／２Ｒ
がらＱ点の横変位量ｖ″を求めることができる。In addition, in Fig. 1, take a point P on the extension of the length of the reference line Km, take Kp as the reference, and at the point P, the point where the perpendicular line erected on the arc S side to the reference line Kl intersects with the arc S. Let Q be the length of Pq, the arc S with respect to the reference line Kp
This is the lateral displacement amount VII of the Q point above. If MEI = C, if the lateral displacement V'' of this point Q is very small compared to the radius R of the arc S, then ■'' = C (1 + C) / 2R
However, the lateral displacement v'' of point Q can be determined.
前記の横変位量ｖ、ｖ’及び■”は、円曲線の性質を利
用して、それ、ぞれ同一の基準線に対する横変位線に換
算することができる。従って、以下の説明において、横
変位量ｖ、ｖ’ 、ｖ”を加算、平均、比較する場合は
、同一の基準線に対する横変位量に換算した値を用いる
ものとする。The above-mentioned lateral displacement amounts v, v' and When adding, averaging, or comparing the displacement amounts v, v', v'', values converted into lateral displacement amounts with respect to the same reference line are used.
従来は、第２図に示すように、軌道の半径Ｒの曲線部を
、Ｓを基準レール、Ｋｍを基準線として通り整正を行う
場合、この一本の基準線ＫＩｌｌの前端部Ｋを軌道の未
整正部の基準レールＳ′上に、後端部Ｍを軌道の整正完
了部の基準レールＳ上に配・置して、基準線Ｋｍを基準
レール′Ｓに沿って移動させながら、軌道の曲線部の整
正すべき点の横変位量Ｖ又はｖｇを測定し、この測定さ
れた横変位量ｖ又はｖ′と予め設定された設定横変位量
とを比較して整正すべき点の整正量を求め、その整正量
だけレールを横移動させて、軌道の通り整正を行ってい
た。従って、既に整正された軌道のレールの横変位量が
、引続いて行われる未整正の軌イ（
道の通り整正作業の影゛豐を受けて変化しても、その変
化した軌道の状態を把握できないため、軌道の整正完了
部と未整正部の通りを滑らかに整正することができない
欠点があった。Conventionally, as shown in Fig. 2, when straightening a curved section of the track with radius R using S as the reference rail and Km as the reference line, the front end K of this single reference line KIll was used as the track. While moving the reference line Km along the reference rail 'S', place the rear end M on the reference rail S' of the unaligned part of the track and the reference rail S' of the finished part of the track. , Measure the lateral displacement amount V or vg of the point to be corrected on the curved part of the track, and compare the measured lateral displacement amount v or v' with a preset lateral displacement amount to correct the point to be corrected. The amount of adjustment was calculated, and the rail was moved laterally by that amount of adjustment, and the adjustment was performed according to the track. Therefore, even if the amount of lateral displacement of the rail on the track that has already been straightened changes due to the influence of the subsequent track straightening work (road straightening work), the changed track Since the condition of the track cannot be grasped, there is a drawback that it is not possible to smoothly straighten the track between the straightened part and the unstraightened part.
その上、従莱では軌道を構成する左右のレールのうち一
方のみを基準レールＳとして整正量の測定を行っていた
めＪ基準レールＳ側の通りの整正のみしか正確に行なえ
ない欠点があった。特に、左右のレールの間隔寸法には
スラックと称する狂（
いが存在するため、従来の如く、一方のレールのみを基
準としていると、軌間の狂いが、反対側のレールにばか
り集積してしまい、反対側のレールの通りが滑らかとな
らない不都合があった。Furthermore, in Jurai, the adjustment amount is measured using only one of the left and right rails that make up the track as the reference rail S, so there is a drawback that only the street alignment on the J reference rail S side can be accurately performed. Ta. In particular, there is a deviation called slack in the spacing between the left and right rails, so if only one rail is used as a reference, as in the past, the deviation in gauge will accumulate on the opposite rail. , there was an inconvenience that the passage of the rail on the opposite side was not smooth.
本発明は、上記の欠点を除去するためになされたもので
、基準レールについてその未整正部と整正完了部の軌道
の状態からそれぞれの整正量を求め、その平均値に応じ
てレールを移動させることにより、軌道の未整正部と整
正完了部を滑らかにしかも左右のレールを均等に通り整
正を行うことが°できる軌道の通り整正方法及び装置を
提供することを目的とする。The present invention has been made in order to eliminate the above-mentioned drawbacks.The present invention has been made in order to eliminate the above-mentioned drawbacks.The present invention calculates the amount of adjustment for each standard rail from the state of the track in the unregistered part and the completed part, and then adjusts the amount of adjustment for the standard rail according to the average value. An object of the present invention is to provide a method and device for straightening a track by moving the track so that the unstraightened part and the straightened part of the track can be smoothed and the track can be straightened evenly passing through the left and right rails. shall be.
以下、本発明の一実施例を図面について詳細に説明する
。Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
第３図は、本発明において一方のレールの原理を示す説
明図、第４図は本発明の一実施例の装置を軌道整正機に
取付けた側面図、第５図は第４図の装置を乙方向より見
た概略図である。Fig. 3 is an explanatory diagram showing the principle of one rail in the present invention, Fig. 4 is a side view of a device according to an embodiment of the present invention attached to a track straightening machine, and Fig. 5 is an illustration of the device of Fig. 4. FIG.
第３図乃至第５図において同一番号は同一部材を示すも
のとする。In FIGS. 3 to 5, the same numbers indicate the same members.
第３図において、主基準線１３と副基準線１６を有する
軌道整正機く図示せず）が矢印Ｘ方向に軌道上を移動す
る際に、整正値を測定せんとする一方のレール１を基準
レールとして、常に主基準線１３上のＥ点のレールに対
する横変位量が零になるように主基準線１３を制御する
。この状態で、軌道の未整正部では、レール１のＢ点と
副基準線１６との横変位量Ｖ２を測定し、軌道の整正完
了部においては、レール１のＦ点と主基準線１３との横
変位ＩＶ３を測定し、軌道の通り整正を行うべきレール
１の整正点においては、Ｄ点と主基準線１３との横変位
量Ｙを測定する。そして、軌道の未整正部のレールの測
定された横変位量ｖ１、■２の平均横変位量を前変位量
Ｖａとし、一方、軌道の整正完了部のレールの測定され
た横変位量ｖ３を後変位量Ｖｂ （複数箇所で測定さ
れ、測定値が複数筒ある場合は、その平均値を用いる）
とし、この前変位量ｖａと後変位量ｖｂとがら平均変位
ＩＹａを求める。この平均変位量Ｙａに、軌道条件、作
業条件等により予め定められている補正量ＶＣを加減算
して、軌道の整正点りにおける設定変位量・ＹＳを求め
、この設定変位量Ｙｓと、軌道の整正点りにおいて測定
された測定横変位量Ｙとから一方のレール１の整正量を
求める。In FIG. 3, when a track straightening machine (not shown) having a main reference line 13 and a sub-reference line 16 moves on the track in the direction of arrow is used as a reference rail, and the main reference line 13 is controlled so that the amount of lateral displacement of point E on the main reference line 13 with respect to the rail is always zero. In this state, in the unaligned part of the track, the lateral displacement amount V2 between point B of rail 1 and the sub reference line 16 is measured, and in the completed part of the track, the amount of lateral displacement V2 is measured between point F of rail 1 and the main reference line. The lateral displacement IV3 between the rail 1 and the main reference line 13 is measured, and the lateral displacement amount Y between the point D and the main reference line 13 is measured at the alignment point of the rail 1 where alignment is to be performed along the track. Then, the average lateral displacement amount of the measured lateral displacement amounts v1 and ■2 of the rails in the unaligned part of the track is set as the previous displacement amount Va, and on the other hand, the measured lateral displacement amount of the rails in the finished part of the track v3 is the displacement amount Vb (if measured at multiple locations and there are multiple cylinders, use the average value)
Then, the average displacement IYa is calculated from the front displacement amount va and the rear displacement amount vb. By adding or subtracting a correction amount VC predetermined according to the track conditions, work conditions, etc. to this average displacement amount Ya, the set displacement amount/YS at the straightening point of the track is obtained. The amount of adjustment of one rail 1 is determined from the measured lateral displacement amount Y measured at the adjustment point.
同時に、反対側のレールに対しても、そのレール用に設
けられた主基準線及び副基準線を用い全く同様な操作を
行い、そのレールについての整正量を求める。At the same time, exactly the same operation is performed on the rail on the opposite side using the main reference line and sub-reference line provided for that rail, and the amount of adjustment for that rail is determined.
そして、上記の様にして求められた左右のレールの整正
量を平均値して整正目標値を算出し、この整正目標値分
だけ、後述のレール横移動装置１５により、レールを横
移動させて、タンピング装置により枕木下面の道床砂利
を締固め、軌道の枕木を、横方向に移動しない様に道床
砂利で固定して、軌道の通り整正を行う。Then, the correction target value is calculated by averaging the amounts of correction of the left and right rails obtained as described above, and the rail is laterally moved by the rail lateral movement device 15, which will be described later. The railroad ties are moved, and the road bed gravel on the underside of the sleepers is compacted using a tamping device, and the track sleepers are fixed with the road bed gravel so that they do not move laterally, and the tracks are aligned.
なお、上述の補正量Ｖｃは、軌道の直線部では零、円曲
線部では予め定められた横変位量、緩和曲線部では、緩
和曲線に接続している円曲線の半径、緩和曲線部におけ
るカント量の逓減方式（直線逓減方式、正弦逓減方式等
）、緩和曲線長、緩和曲線又は円曲線の出入口からの走
行距離等の軌道条件、作業条件から定まる補正量である
。Note that the above-mentioned correction amount Vc is zero in the straight part of the trajectory, a predetermined lateral displacement amount in the circular curve part, and the radius of the circular curve connected to the transition curve, and the cant in the transition curve part. This is the amount of correction determined from the gradual reduction method (linear gradual reduction method, sine gradual reduction method, etc.), track conditions such as the length of the transition curve, travel distance from the entrance and exit of the transition curve or circular curve, and work conditions.
次に、軌道の直線部においては、左右のレールそれぞれ
について、前記前変位量Ｖａに対応する軌道の未整正部
のレールの平均通り狂い量をＶ′ａ、前記後変位量ｖｂ
に対応する軌道の整正完了部のレールの平均通り狂い量
を■９ｂとして、前記平均変位量Ｙａに対応するレール
に平均通り狂いＩＹ’ ａを求める。そして、この平均
狂いＭＹ′ａと、前記整正すべき点の測定横変位量Ｙに
対応するレールの整正点りにおける測定通り狂い量Ｙｌ
とから各レールごとの整正量を求め、これを平均化して
一整正目標値を算出する。以下、上述の曲線部の通り整
正の場合と同様にして、軌道の直線部の通り整正を行う
ことができる。なお、この場合前記した様に補正量Ｖｃ
は零である。Next, in the straight section of the track, for each of the left and right rails, the average amount of deviation of the rails in the unaligned part of the track corresponding to the front displacement amount Va is set to V'a, and the rear displacement amount vb
Assuming that the average misalignment amount of the rail at the straightened portion of the track corresponding to 2 is 9b, the average misalignment IY' a of the rail corresponding to the average displacement amount Ya is determined. Then, this average deviation MY'a and the measured deviation amount Yl at the rail adjustment point corresponding to the measured lateral displacement Y at the point to be adjusted.
The straightening amount for each rail is determined from the above, and the averaged value is calculated to calculate the straightening target value. Thereafter, in the same manner as in the case of straightening the curved portion described above, straightening of the straight portion of the track can be performed. In this case, as mentioned above, the correction amount Vc
is zero.
次に、上述の第３図について説明した方法を実簾する装
置の一実施例を第４図及び第５図に従って説明する。Next, an embodiment of an apparatus for carrying out the method explained in connection with FIG. 3 above will be described with reference to FIGS. 4 and 5.
図において、レール１．１ａ上を走行可能な軌道整正機
２には、軌道の高低水準整正を行う公知のレベリング８
Ｍ３及び軌道の通り整正を行う本発明の通り整正装置４
が設〕ブられ、通常は軌道の高低水準整正と同時に通り
整正が行われる。レベリング族Ｍ３は、前基準部Ｍ５、
検出装置１６、後基準装置７、基準線８及びレール打上
装置９等を有する。一方、通り整正装Ｗ４は、前基準部
１０、検出部１１、後基準部１２、左右の主基準１１１
３゜１３８、演算器１４、及びレール横移動部［１５か
ら構成されている。なお、各測定輪は、左右のレール側
部に空気圧等により押しつけられ密着している。In the figure, a track leveling machine 2 capable of running on a rail 1.1a includes a known leveling machine 8 for leveling the level of the track.
A straightening device 4 according to the present invention that straightens M3 and the track according to the present invention
Normally, alignment is carried out at the same time as level alignment of the track. The leveling group M3 includes a front reference part M5,
It has a detection device 16, a rear reference device 7, a reference line 8, a rail launch device 9, etc. On the other hand, the formal dress W4 includes a front reference section 10, a detection section 11, a rear reference section 12, and left and right main references 111.
3°138, a computing unit 14, and a rail lateral movement section [15]. Note that each measuring wheel is pressed against and in close contact with the left and right rail sides by air pressure or the like.
（１）前基準部
前基準部１０は、軌道整正機２の前部に設けられ、左右
のレール１，１ａを基準レールとして、軌道の未整正部
のレールの２箇所の点の横変位量を測定するもので、測
定部Ａ■、Ｂ１、ＣＩ及び左右の副基準線１６．１６８
より成っている。(1) Front reference part The front reference part 10 is provided at the front part of the track straightening machine 2, and uses the left and right rails 1 and 1a as reference rails, and the front reference part 10 is located next to two points on the rail in the unstraightened part of the track. Measures the amount of displacement, measuring parts A■, B1, CI and left and right sub reference lines 16.168
It consists of
測定部へ−は、前基準部１０の最前部に位置し、連結稈
１７により軌道整正機２の台枠１８の前部に取付けられ
、台車１９及びこの台車１９に回転自在に取付けられた
左右の車輪２０．２０ａを有している。左右の車輪２０
，２０８は、ばね又は流体圧を利用した張りシリンダ（
図示せず）により台車１つを介して、左右のレール１．
１ａの頭部側面に押し付けられ、レール１．１ａに密接
し゛ながらレール１．１ａ上を軌道整正Ｉ！Ｊ２と共に
移動する。従って、車輪２０又は、２０ａは台車１９に
対し独立に取付けられレールに密接して横方向に移動可
能に構成されている。また、台車１９には左右の銅基ｒ
！ｌ−線１６．１６ａの一端が取付けられている。The measuring part is located at the forefront of the front reference part 10, is attached to the front part of the underframe 18 of the track straightening machine 2 by a connecting culm 17, and is rotatably attached to a trolley 19 and this trolley 19. It has left and right wheels 20.20a. Left and right wheels 20
, 208 is a tension cylinder (
(not shown), the left and right rails 1.
I! is pressed against the side surface of the head of rail 1a, and adjusts the track on rail 1.1a while being in close contact with rail 1.1a! Moves with J2. Therefore, the wheels 20 or 20a are independently attached to the truck 19 and are configured to be movable laterally in close contact with the rails. In addition, the trolley 19 has left and right copper bases r.
! One end of the l-wire 16.16a is attached.
測定部Ｂ−は、レベリング族Ｍ３の前基準装欝５に取付
けられ、台車２１と、この台１１２１に回転自在に且つ
前記測定部ＡＩと同様な構成で取付けられた左右の車輪
２０．２０８と、左右のレール１，１ａとＩＩＩ準１１
１６．１６ａのそれぞれの横変位量を測定して出力する
ポテンショメータ２２．２２８から成っている。The measuring section B- is attached to the front reference frame 5 of the leveling group M3, and includes a truck 21, and left and right wheels 20.208 rotatably attached to the platform 1121 and having the same configuration as the measuring section AI. , left and right rails 1, 1a and III semi-11
It consists of potentiometers 22, 228 that measure and output the amount of lateral displacement of each of 16, 16a.
測定部Ｃ■は、前基準部１０の最後部に設けられ、台車
２３と、この台車２３に回転自在に、且つ前記測定部Δ
農の場合と同様な構成で取付けられた車輪２０，２０ａ
と、レール１，１ａと左右の主基準線１３．１’３ａと
の横変位量を測定して出力する左右のポテンショメータ
２４．２４ａより成っている。The measuring section C■ is provided at the rearmost part of the front reference section 10, and is connected to a truck 23, rotatably attached to the truck 23, and connected to the measuring section Δ.
Wheels 20, 20a installed in the same configuration as in the case of agriculture
and left and right potentiometers 24.24a that measure and output the amount of lateral displacement between the rails 1, 1a and the left and right main reference lines 13.1'3a.
（２）検出部
検出部１１は、レベリング装置３における検出部Ｍ６の
検出台＊６′とほぼ同位置に設けられ、整正点りのレー
ル横変位量を測定するものである。(2) Detection part The detection part 11 is provided at approximately the same position as the detection table *6' of the detection part M6 in the leveling device 3, and measures the amount of rail lateral displacement of the alignment point.
この検出部１またる測定部ＤＩは、台車２５と、この台
車２５に回転自在に、且つ前記測定部ＡＩと同様な構成
で取付けられた左右の車輪２０１２０ａと、左右のレー
ル１．１８と左右の主基準線１３．１３８との横変位量
を測定して出力するポテンショメータ２６．２６ａより
構成されている。The measuring section DI spanning the detecting section 1 includes a cart 25, left and right wheels 20120a rotatably attached to the cart 25 with the same configuration as the measuring section AI, left and right rails 1.18, and left and right rails 1.18. The potentiometer 26.26a measures and outputs the amount of lateral displacement with respect to the main reference line 13.138.
（３）後基準部 ・
後基準部１２は、軌道整正機２の後部に設けられ、軌道
の整正完了部のレールの横変位量を測定するもので、位
置検出部Ｅｌ、測定部Ｆｓ及び零点制蓼装置２７より成
っている。(3) Rear reference section - The rear reference section 12 is provided at the rear of the track straightening machine 2 and measures the amount of lateral displacement of the rail at the completed section of the track, and includes a position detection section El and a measurement section Fs. and a zero point control device 27.
位置検出部Ｅｌは、検出部１１と測定部Ｆｍの間に設け
られたレベリング装置３の後基準装置７に取付けられて
いる。この位置検出部Ｅ−は、台車２８と、この台車２
８に回転自在に、且つ前記測定部Ａ■と同様な構成で取
付けられた左右の車輪２０．２０ａと１、左右のレール
１，１ａと左右の主基準線１３．１３８との横変位量を
測定し、その測定結果を零点制ｍ装置ｆ２７に対して出
力するポテンショメータ２９．２９ａより成っている。The position detection section El is attached to the rear reference device 7 of the leveling device 3 provided between the detection section 11 and the measurement section Fm. This position detecting section E- detects the trolley 28 and the trolley 2.
The amount of lateral displacement between the left and right wheels 20.20a and 1, the left and right rails 1 and 1a, and the left and right main reference lines 13.138, which are rotatably attached to the measuring part A and 8 and in the same configuration as the measurement part A, is measured. It consists of potentiometers 29 and 29a that measure and output the measurement results to the zero point control device f27.
測定部Ｆ−は、後基準部１２の最後部に位置し、連結稈
３０を介して軌道整正機２の台枠１８ｆ７）、後部に取
付けられた台車３１と、この台車３１に回転自在に、且
つ前記測定部ＡＩと同様な構成で取付けられた車輪２０
．２０ａを有している。また、測定部ｆ−ｍには、零点
制御装［１２７の出力信号により作動する左右一対のサ
ーボモータ３２．３２ａが設けられ、このサーボモータ
３２．３２８に歯車機構３３を介してねじ軸３４．３４
８が連結されている。このねじ軸３４．３４８には調整
筒３５．３５ａが螺合しており、この調整筒３５゜３５
ａに主基準線１３の後端部が取付けられている。サーボ
モータ３２．３２ａには、その回転角度を歯車機構３６
を介して測定して出力するポテンショメータ３７が付設
されている。The measuring part F- is located at the rearmost part of the rear reference part 12, and is connected to the underframe 18f7) of the track straightening machine 2 via the connecting culm 30, to the trolley 31 attached to the rear, and to the trolley 31 so as to be rotatable. , and a wheel 20 attached with the same configuration as the measurement unit AI.
．． 20a. The measurement unit f-m is also provided with a pair of left and right servo motors 32.32a which are operated by the output signal of the zero point control device [127]. 34
8 are connected. An adjustment cylinder 35.35a is screwed into this screw shaft 34.348, and the adjustment cylinder 35.35a
The rear end portion of the main reference line 13 is attached to a. The servo motor 32.32a has a gear mechanism 36 that controls its rotation angle.
A potentiometer 37 is attached for measuring and outputting via the .
（４）零点制御装置
零点制御装置２７は、位置検出部ＥＩｌｌのポテンショ
メータ２９．２９ａの出力が入力した際に作動し・を測
定部Ｆｍのサーボモータ３２・３２°へ作動信号を出力
する。そして、ポテンショメータ２９、．２９ａの出力
が零になるとサーボモータ３２．３２８を停止させ、位
置検出部Ｅｌ１１の車輪２０．２０８の位置において左
右の基準レール１゜１８と主基準線１３．１３ａとの横
変位量が常零になるようにサーボモータ３２を制御する
ものである。従って、位置検出部Ｅｌのポテンショメー
タ２９，２９８の出力が零になった時の、測定部−１ち
Ｆ＋における調整筒３５のねじ軸３４に沿っての移動量
が、基準レール１，１ａと主基準線１３゜１３ａとの横
変位量となり、ポテンショメータ３７．３７ａにより測
定されて出力される。(4) Zero-point control device The zero-point control device 27 is activated when the output of the potentiometer 29, 29a of the position detection section EIll is input, and outputs an operation signal to the servo motor 32, 32° of the measurement section Fm. And potentiometer 29, . When the output of 29a becomes zero, the servo motor 32.328 is stopped, and the amount of lateral displacement between the left and right reference rails 1°18 and the main reference line 13.13a is always zero at the position of the wheel 20.208 of the position detection unit El11. The servo motor 32 is controlled so that the following occurs. Therefore, when the output of the potentiometers 29, 298 of the position detection part El becomes zero, the amount of movement of the adjustment cylinder 35 in the measuring part -1, ie, F+, along the screw shaft 34 is the same as that of the reference rails 1, 1a. This is the amount of lateral displacement with respect to the reference line 13.degree. 13a, which is measured by the potentiometer 37.37a and output.
（５）主基準線
左右の主基準線１３．１３８は、その前端部を前基準部
１０の測定部ＢＩｌｌに、その後端部を後基準部１２の
測定部ＦＩに取付けられている。(5) Main Reference Lines The left and right main reference lines 13 and 138 have their front ends attached to the measurement part BIll of the front reference part 10 and their rear ends to the measurement part FI of the rear reference part 12.
（６）演算器
演算器１４は、操作部３８及び演算部３９から成ってい
る。(6) Arithmetic unit The arithmetic unit 14 consists of an operating section 38 and an arithmetic section 39.
操作部３８は、整正すべき軌道が円曲線の場合は、予め
定められた横（位置を緩和曲線の場合は、緩和曲線に接
続している円曲線の半径、カント量の逓減方式等の軌道
条件及び作業位置が緩和曲線又は円曲線ゐ入口か、出口
か等の作業条件を演算部３９に対して出力する。If the trajectory to be corrected is a circular curve, the operating unit 38 is configured to adjust the trajectory according to a predetermined horizontal direction (if the trajectory is a transitional curve, the radius of the circular curve connected to the transition curve, a method of decreasing the amount of cant, etc.). Conditions and work conditions such as whether the work position is at the entrance or exit of a transitional curve or circular curve are output to the calculation unit 39.
演算部３９は、前基準部１０の測定部ＢＩＩｌのボ、テ
ンショメータ２２．２２ａ７Ａび測定部Ｃｌ１ｌのポテ
ンショメータ２４．２４ａの出力を入力して、軌道の未
整正部の左右のレールの前変位［ｊＶａを求め、後基準
部１２の測定部Ｆ−のポテンショメータ３７．３７ａの
出力を入力して、軌道の整正・、完了部の後変位量ＶＢ
を求め、これ等のｖａ４、Ｖｂより左右のレールについ
てそれぞれの平均変位量Ｙａを求める。そして、演算部
３９は、整正すべき軌道が円曲線の場合は、操作部３８
より入力された予め定められた横変位量を補正量Ｖｃと
して、前記平均位置Ｖ’ａに加減して、設定変位ＭＹＳ
を求め、この設定変位量Ｙｓと、検出部１１即ち測定部
Ｄ−のポテンショメータ２６から入力される測定横変位
量Ｙとから左右のレールの整正１−を求め、更にこれを
平均化して整正目標値を算出し、レール横移動装置１５
の油圧制御装［４１に対し作業信号として出力する。The calculation unit 39 inputs the outputs of the potentiometer 22.22a7A of the measurement unit BIIl of the front reference unit 10 and the potentiometer 24.24a of the measurement unit Cl1l, and calculates the front displacement of the left and right rails in the unaligned part of the track. [Calculate jVa, input the output of the potentiometer 37.37a of the measuring section F- of the rear reference section 12, and calculate the amount of rear displacement VB of the trajectory adjustment and completion section.
is determined, and the average displacement amount Ya for the left and right rails is determined from these va4 and Vb. Then, when the trajectory to be corrected is a circular curve, the calculation unit 39
The predetermined lateral displacement amount inputted from the above is used as the correction amount Vc, and is added to or subtracted from the average position V'a to obtain the set displacement MYS.
is determined, and the adjustment 1- of the left and right rails is determined from this set displacement amount Ys and the measured lateral displacement amount Y input from the potentiometer 26 of the detection unit 11, that is, the measurement unit D-, and then the adjustment is performed by averaging these values. Calculate the positive target value and move the rail lateral movement device 15
It is output as a work signal to the hydraulic control system [41].
また、演算部３９は、整正すべき軌道が緩和曲線の場合
は、レベリング装置３の後基準装置７に設けられた走行
パルス発信器４０．４０ａから入力される走行パルスを
計数して求めた軌道整正機２の緩和曲線又は円曲線の入
口又は出口からの走行距離と、前記操作部３８からの入
口とから補正量ＶＣを求め、これを前記平均変位ＩＹａ
に加減算して、設定変位量Ｙｓを求める。そして、上述
の円曲線の場合と同様にして、左右のレールの整正量を
求め、更にこれを平均化して整正目標値を算出しレール
横移動装置１５の油圧制御装置４１に対して作動信号を
出力する。In addition, when the trajectory to be corrected is a transition curve, the calculation unit 39 calculates the trajectory obtained by counting the running pulses inputted from the running pulse transmitter 40, 40a provided in the reference device 7 after the leveling device 3. A correction amount VC is obtained from the travel distance from the entrance or exit of the transitional curve or circular curve of the straightening machine 2 and the entrance from the operating section 38, and this is calculated as the average displacement IYa.
The set displacement amount Ys is determined by adding and subtracting from . Then, in the same manner as in the case of the circular curve described above, the amount of adjustment of the left and right rails is determined, and further, this is averaged to calculate the adjustment target value, which is activated for the hydraulic control device 41 of the rail lateral movement device 15. Output a signal.
（７）レール横移動装置、
レール横移動装置１５は、油圧制御装置４１及び油圧シ
リンダ４２より成り、演算器、１４の作動信号により油
圧制御装置４１が作動し、油圧シリンダ４２を作動させ
て、整正点においてレール１″１ａを前記整正量だけ横
移動させるものである。(7) Rail lateral movement device, the rail lateral movement device 15 consists of a hydraulic control device 41 and a hydraulic cylinder 42, and the hydraulic control device 41 is activated by an operation signal from the computing unit 14, and the hydraulic cylinder 42 is activated. The rail 1''1a is laterally moved by the amount of adjustment at the adjustment point.
次に、以上の構成を有する本発明の軌道の通り整正装置
の作用について説明する。Next, the operation of the track alignment device of the present invention having the above configuration will be explained.
（ａ）予め通り整正された電輪軌道上で、通り整正装置
４の各測定部Ｂｌ、Ｃ１１Ｄｌ、ＦＩ１１及び位置検出
部Ｅｌの各ポテンショメータ２２．２４．２６．３７．
２９が主基準線１３又は副基準線１６に対して零位習に
あるように調整しておく。(a) Each potentiometer 22, 24, 26, 37, .
29 is adjusted so that it is at zero position with respect to the main reference line 13 or the sub-reference line 16.
（ｂ）操作部３８に、軌道条件、作業条件に応じて所要
値を設定し、後基準部１２の零点制御装置２７によりサ
ーボモータ３２．３２８を制御して、位置検出部Ｅｌの
ポテンショメータ２９，２９ａ・ の出力が零、即
ち基準レール１，１ａのＥ点と左右の主基準線１３．１
３ａとの横変位量を零として、測定部Ｂｌ 、ＣＩ 、
ＤＩ 、Ｆ−によりそれぞれレール１，１ａのＢＳＣ，
Ｄ、Ｆ点の横変位量を測定する。そして、各レールごと
の測定横変位量をそれぞれｖｌ、■２、Ｙ１３とし、こ
れらの測定横変位置を演算器１４の演算部３つに入力す
る。 ゛
（ｃ ）演算部３９では、Ｖｌ、Ｖ２の平均横変位量か
ら、軌道の未整正の部分の各レールの前変位ＩＶａが、
ｖ３から軌道の整正完了の部分の各レールの後変位量ｖ
ｂが求められ、この前変位量Ｖａと後変位量ｖｂから、
整正点りにおける各レールの平均変位量’（ａが求めら
れる。緩和曲線部においては、演算部３９は、操作部３
８から軌道条件及び作業条件による所要値を走行パルス
発信器４０からは走行パルスを入力して、整正点りにお
ける各レールの補正ＩＶＣを求める。そして、この補正
量Ｖｃを前記平均変位置Ｙａに加減算して、設定変位量
ＹＳを求め、この設定変位量Ｙｓと測定部Ｄ■により測
定された整正点りの測定横変位ＩＹとから各レールごと
の整正量を求め、これを平均化して整正目標値を算出し
、レール横移動装置１５の油圧制御装置４１に対して作
動信号を出力する。(b) Set the required values in the operation section 38 according to the trajectory conditions and work conditions, and control the servo motor 32,328 by the zero point control device 27 of the rear reference section 12, and the potentiometer 29 of the position detection section El. The output of 29a is zero, that is, the E point of the reference rails 1 and 1a and the left and right main reference lines 13.1
Assuming that the amount of lateral displacement with respect to 3a is zero, the measurement parts Bl, CI,
BSC of rails 1 and 1a by DI and F-, respectively.
Measure the amount of lateral displacement at points D and F. Then, the measured lateral displacement amounts for each rail are set as vl, 2, and Y13, respectively, and these measured lateral displacement positions are input to three calculation units of the calculation unit 14. (c) In the calculation unit 39, from the average lateral displacement amount of Vl and V2, the front displacement IVa of each rail in the uncorrected part of the track is calculated as follows.
The amount of displacement after each rail from v3 to the completion of track alignment v
b is obtained, and from this front displacement amount Va and rear displacement amount vb,
The average displacement '(a) of each rail at the alignment point is calculated. In the transition curve section, the calculation unit 39
8, the required values according to the track conditions and work conditions are inputted from the running pulse transmitter 40, and the corrected IVC of each rail at the alignment point is determined. Then, this correction amount Vc is added or subtracted from the average displacement position Ya to obtain a set displacement amount YS, and from this set displacement amount Ys and the measured lateral displacement IY of the alignment point measured by the measuring part D■, each rail The adjustment amount for each adjustment is calculated, averaged to calculate the adjustment target value, and an operation signal is output to the hydraulic control device 41 of the rail lateral movement device 15.
（ｄ）この作動信号により油圧制御１！装Ｍ４１が作動
すると、油圧シリンダ４２が作動し、整正点りの近傍で
、レール１．１８を、前記整正目標値だけ横移動させ、
タンピング装置４３により枕木下面の道床砂利を締固め
て整正点りの軌道通り整正を完了する。(d) Hydraulic control 1! by this actuation signal! When the mounting M41 is activated, the hydraulic cylinder 42 is activated, and the rail 1.18 is laterally moved by the adjustment target value in the vicinity of the adjustment point.
The tamping device 43 compacts the roadbed gravel on the lower surface of the sleepers, completing the alignment of the track at the alignment point.
（ｅ）軌道の直線部における通り整正の作用については
、操作部３８に直線部の通り整正、即らＣ＝Ｏを設定し
、以下同様に行う。(e) Regarding the straightening action in the straight section of the track, set the straight section straightening, that is, C=O, on the operation unit 38, and perform the same procedure thereafter.
以上の様に、本発明は、軌道の未整正部のレールの複数
箇所の点の横変位量を、前記整正点の後方で軌道の整正
完了部のレニルの１箇所又は複数箇所の点の横変位量を
測定し、常に軌道の未整正部と整正完了部の軌道の状態
を把握して各レールごとの整正量を求め、更にこれを平
均化して整正目標値を算出したものである。従って、本
発明によれば、既に整正された軌−のレールの横変位量
が、引続いて行われる軌道のレールの横移動の影響を受
けても、変化した量が一常に測定されて次の整正点の設
定変位量に含まれるので、軌道の曲線部及び直線部にお
いても、常に軌道の通りを滑らかにすることができる。As described above, the present invention calculates the amount of lateral displacement at a plurality of points on the rail in the unaligned section of the track, at one or more points on the rail at the completed section of the track behind the alignment point. Measures the amount of lateral displacement of the track, always understands the track condition of the unaligned part and the completed area of the track, calculates the amount of alignment for each rail, and then calculates the alignment target value by averaging this. This is what I did. Therefore, according to the present invention, even if the amount of lateral displacement of the rail of the track that has already been straightened is affected by the subsequent lateral movement of the rail of the track, the amount of change is always measured. Since it is included in the set displacement amount of the next correction point, the trajectory can always be made smooth even in curved sections and straight sections of the trajectory.
また軌道が長年の間に自然に変化し、軌道条件が分らな
くなっても、軌道の通り整正を行うことができる等の効
果が大である。特に本発明においては、各レールごとに
整正量を求めこれを平均化して整正目標値を算出し、こ
の目標値分だけレールを移動させるようにしたものであ
る。片側のレールのみ基準とした場合のように反対側レ
ールに狂いが集積されるおそれがなく、左右のレールを
共になめらかに整正゛することが可能である。Furthermore, even if the orbit changes naturally over many years and the orbit conditions are no longer known, it is highly effective in that the orbit can be corrected. Particularly, in the present invention, the adjustment amount is determined for each rail, and the values are averaged to calculate the adjustment target value, and the rail is moved by the amount of this target value. Unlike when only one rail is used as a reference, there is no risk of misalignment being accumulated on the opposite rail, and it is possible to smoothly align both the left and right rails.
また、以−上の実施例においては、軌道の未整正の部分
のレールの横変位量を２箇所で、軌道の整正完了部の部
分のレール横変位量を１箇所で測定する場合について説
明したが、軌道の未整正の部分のレールの横変位量を３
箇所以上、軌道の整正完了の部分レールの横変位量を２
箇所以上で測定しても、本発明を実施出来ることは自明
である。In addition, in the above embodiment, the amount of lateral displacement of the rail in the unaligned portion of the track is measured at two locations, and the amount of rail lateral displacement in the portion of the track where alignment has been completed is measured at one location. As explained above, the amount of lateral displacement of the rail on the unaligned part of the track is 3
At least 2 points, the amount of lateral displacement of the partial rail after track alignment is completed.
It is obvious that the present invention can be carried out even if measurements are made at more than one location.
第１°図は軌道の横変位量等の定義の説明図、第２図は
従来の通り整正方法の原理の説明図、第３図は本発明の
通り整正方法の原理の説明図、第４図は、本発明の一実
施例の軌道の通り゛整正装置を軌道整正様に取付けた側
面図、第５図は第４図を７・方向より見た概略図である
。
１．１ａ・・・レール、２・・・軌道整正機、４・・・
通り整正機、１０・・・前基準部、１１・・・検出部、
１２・・・後基準部、１３，１３ａ・・・主基準部、１
４・・・演算機、１５・・・レール横移動装置、１６．
１６８・・・副基準線、１９．２１．２３．２５，２８
．３１・・・台車、２２．２２ａ 、２４．２４ａ 、
２６．２６ａ 、２９．２９ａ 、３７．３７ａ・・・
ポテンショメータ、２７・・・零点制御装置、３２，３
２ａ・・・サーボモータ、３４．３４８・・・ねじ軸、
３５．３５８・・・調整筒、３８・・・操作部、３つ・
・・演算部、Ａｌｌ 、 ３ｗ＋ 。
Ｃｍ、ｌ）ｍ、Ｆｍ・・・測定部、Ｅｌｌ＋・・・位置
検出部。
特許出願人 株式会社芝浦製作所
代 理 人 弁理士 水内 光Ｎ
φ−−ＸFig. 1 is an explanatory diagram of the definition of the amount of lateral displacement of the track, etc. Fig. 2 is an explanatory diagram of the principle of the straightening method as in the conventional method, Fig. 3 is an explanatory diagram of the principle of the straightening method according to the present invention, FIG. 4 is a side view of an embodiment of the present invention in which a track straightening device is installed to straighten the track, and FIG. 5 is a schematic diagram of FIG. 4 viewed from direction 7. 1.1a...Rail, 2...Track straightening machine, 4...
street straightening machine, 10... front reference section, 11... detection section,
12... Rear reference part, 13, 13a... Main reference part, 1
4... Computing machine, 15... Rail lateral movement device, 16.
168... Sub reference line, 19.21.23.25, 28
．． 31... Trolley, 22.22a, 24.24a,
26.26a, 29.29a, 37.37a...
Potentiometer, 27... Zero point control device, 32, 3
2a...Servo motor, 34.348...Screw shaft,
35.358...Adjustment tube, 38...Operation unit, 3 pieces.
...Arithmetic unit, All, 3w+. Cm, l)m, Fm...Measurement section, Ell+...Position detection section. Patent applicant Shibaura Seisakusho Co., Ltd. Representative Patent attorney Hikaru Mizuuchi N φ--X
Claims (2)
と、軌道の未整正部のレールの２箇所以上の点との横変
位量を測定して、未整正部のレールの前変位量を求める
と共に、整正完了部のレールの１箇所以上の点と前記主
基準線との横変位量を測定して、整正完了部のレールの
後変位量を求め、前記前変位量と前記後変位量とから平
均変位量を求め、前記平均変位量を軌道条件、作業条件
等に応じて補正し、設定変位量と、軌道の整正すべき位
置のレールと前記主基準線との測定横変位量とから整正
量を求め、この左右のレールごとの整正量を平均化して
整正目標値を算出し、この整正目標値だけ軌道のレール
を横移動させて、軌道の通り整正を行うことを特徴とす
る軌道の通り整正方法。(1) Measure the amount of lateral displacement between the sub reference line and main reference line provided for each rail on the left and right and two or more points on the rail in the unregistered part of the track, and In addition to determining the amount of forward displacement, the amount of lateral displacement between one or more points of the rail in the straightening completed section and the main reference line is determined to determine the backward displacement amount of the rail in the straightening completed section, and An average displacement amount is calculated from the amount of displacement and the above-mentioned post-displacement amount, and the average displacement amount is corrected according to the track conditions, work conditions, etc., and the set displacement amount, the rail at the position where the track is to be straightened, and the main reference line are calculated. The amount of adjustment is calculated from the measured lateral displacement of A track straightening method characterized by straightening a track.
と共に移動する複数個の横変位測定部及び副基準線を有
し、別に設けらけた主基準線の一端が前記横変位測定部
の一つに連結された左右一対の前基準線と、前記軌道整
正機の中間部に取付けられ、前記軌道整正機と共に移動
し、前記主基準線と軌道レールの整正すべき位置との横
変位−を検出する各基準ｉとレールごとの検出部と前記
軌道整正機の後部に取付けられ、前記軌道整正機と共に
移動する１個又は複数個の横変位測定部を有し、前記横
変位測定部に前記主基準線の他端が取付けられ、前記横
変位測定部と前記検出部との間に設けられた位置検出部
と、前記位置検出部の出力が零になるように、前記主基
準線の他端を制御する零点制御装置を有する各基準線と
レールごとの後基準部と、前記前基準部により軌道の未
整正部における・左右のレールの後変位量を求め、前記
前変位量と前記後変位量から平均変位量を求め、軌道条
件、作業条件等に応じて、前記平均変位量を補正して設
定変位量を求め、前記設定変位量と、前記検出部により
検出された軌道の整正すべき位置のレールの測定横変位
量とから左右のレールごとの整正量を求め、これを平均
化して整正目標値を算出する前記演算器からの出力によ
り作動し、レールを前記整正目標値だけ横移動させるレ
ール横移動装置とより成ることを特徴とする軌道の通り
整正装置。(2) It is attached to the front part of the track straightening machine and has a plurality of lateral displacement measuring parts and a sub reference line that move together with the track straightening machine, and one end of the main reference line provided separately is connected to the lateral displacement. A pair of left and right front reference lines connected to one of the measurement parts, and a position where the track rail is to be aligned with the main reference line, which is attached to the middle part of the track alignment machine and moves together with the track alignment machine. and a detection unit for each reference i and each rail, and one or more lateral displacement measurement units that are attached to the rear of the track straightening machine and move together with the track straightening machine. , the other end of the main reference line is attached to the lateral displacement measuring section, and a position detecting section provided between the lateral displacement measuring section and the detecting section, and an output of the position detecting section are set to zero. A rear reference part for each reference line and each rail has a zero point control device that controls the other end of the main reference line, and the front reference part is used to calculate the rear displacement amount of the left and right rails in the unaligned part of the track. calculate the average displacement amount from the front displacement amount and the rear displacement amount, correct the average displacement amount according to the orbit conditions, work conditions, etc. to determine the set displacement amount, and calculate the set displacement amount and the detection amount. From the measured lateral displacement amount of the rail at the position to be corrected on the track detected by the section, the correction amount for each left and right rail is calculated, and the correction target value is calculated by averaging this. A track straightening device comprising: a rail lateral movement device that is activated to laterally move the rail by the straightening target value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12536881A JPS5827003A (en) | 1981-08-12 | 1981-08-12 | Method and apparatus for aligning rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12536881A JPS5827003A (en) | 1981-08-12 | 1981-08-12 | Method and apparatus for aligning rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5827003A true JPS5827003A (en) | 1983-02-17 |
| JPH0135966B2 JPH0135966B2 (en) | 1989-07-27 |
Family
ID=14908397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12536881A Granted JPS5827003A (en) | 1981-08-12 | 1981-08-12 | Method and apparatus for aligning rail |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827003A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS546211A (en) * | 1977-06-13 | 1979-01-18 | Shibaura Eng Works Ltd | Inspecting and measuring device of line track correction machine |
| JPS5585702A (en) * | 1978-12-19 | 1980-06-28 | Canron Corp | Apparatus for reducing errors of railway track position |
-
1981
- 1981-08-12 JP JP12536881A patent/JPS5827003A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS546211A (en) * | 1977-06-13 | 1979-01-18 | Shibaura Eng Works Ltd | Inspecting and measuring device of line track correction machine |
| JPS5585702A (en) * | 1978-12-19 | 1980-06-28 | Canron Corp | Apparatus for reducing errors of railway track position |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0135966B2 (en) | 1989-07-27 |
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