JPH0447611Y2 - - Google Patents
Info
- Publication number
- JPH0447611Y2 JPH0447611Y2 JP13565087U JP13565087U JPH0447611Y2 JP H0447611 Y2 JPH0447611 Y2 JP H0447611Y2 JP 13565087 U JP13565087 U JP 13565087U JP 13565087 U JP13565087 U JP 13565087U JP H0447611 Y2 JPH0447611 Y2 JP H0447611Y2
- Authority
- JP
- Japan
- Prior art keywords
- target
- ball
- support leg
- pipe
- shaped 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
- 238000009434 installation Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007689 inspection Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は配管の管底高さ測量用ターゲツトに関
する。詳細には、下水道管等の配管の設置状態を
管底高さを測量することにより検査する際に、測
量器（又はレベル、トランシツト等という）と組
み合わせて用いられる配管の管底高さ測量用ター
ゲツトに関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a target for measuring the height of the bottom of a pipe. Specifically, it is used in combination with a surveying instrument (also called a level, transit, etc.) when inspecting the installation condition of pipes such as sewer pipes by measuring the pipe bottom height. Regarding the target.
（考案の背景）
従来、水等の液体を自然流下により給送する配
管は、上記液体が管路途中で滞留することなく円
滑に流下するように所定の勾配で設置されている
ことが必要とされており、設置後、所定期間使用
後等において設置状態を検査し、該検査結果に基
いて補修は行なわれている。(Background of the idea) Conventionally, piping that supplies liquids such as water by gravity has been required to be installed at a predetermined slope so that the liquid can flow smoothly without stagnation in the middle of the pipe. The installation condition is inspected after installation and after use for a predetermined period of time, and repairs are performed based on the inspection results.
ところで、上記配管の設置状態の検査は、試験
的に水を流して水の滞留する箇所を検査すること
によつて通常行なわれている。すなわち、配管内
に試験的に水を流した後、作業者が配管内に入
り、目視によつて水の滞留箇所を検査すると共
に、巻尺等の距離測定用テープによつて上記箇所
の配管中における位置を測定することにより行な
われている。上記水の滞留する箇所は、管底が低
い箇所として検出されることになるが、周辺部と
の関係において相対的に低い箇所を示すに過ぎ
ず、所定勾配の管底との関係における低い箇所を
示すものではない。従つて、上記検査によつて
は、管底の高さを正確に検査することができない
状況である。 By the way, the above-mentioned installation state of the piping is usually inspected by running water on a trial basis and inspecting locations where water accumulates. In other words, after a trial run of water inside the piping, a worker enters the piping and visually inspects the areas where water is stagnant, and also uses a distance measuring tape such as a tape measure to measure the areas in the piping. This is done by measuring the position at . The above points where water accumulates are detected as points where the pipe bottom is low, but this only indicates a relatively low point in relation to the surrounding area, and it is a low point in relation to the pipe bottom of a predetermined slope. It is not meant to indicate. Therefore, the height of the tube bottom cannot be accurately inspected by the above-mentioned inspection.
そこで、測量技術において従来一般に用いられ
ている測量器とターゲツトとにより、配管の各位
置における管底の高さを直接測量して配管の設置
状態を検査することが行なわれている。すなわ
ち、上記ターゲツトは棒状体又は板状体に目盛が
形成された測定定規であつて、一人の作業者が管
内に入り、上記ターゲツトを所定間隔置きの複数
箇所に順次移動して管底に垂直に立て、他の作業
者が上記各箇所におけるターゲツトの目盛を測量
器により読取つて各箇所における管底高さを測量
し、該測量の結果により配管の設置状態を検査す
ることが行なわれている。 Therefore, the installed state of the pipes is inspected by directly measuring the height of the pipe bottom at each position of the pipes using a surveying instrument and a target that have been conventionally commonly used in surveying technology. That is, the target is a measuring ruler with a scale formed on a rod or plate, and one worker enters the pipe and sequentially moves the target to multiple locations at predetermined intervals to measure it perpendicular to the bottom of the pipe. Another worker uses a surveying instrument to read the target scale at each of the above points, measures the pipe bottom height at each point, and inspects the installation condition of the pipe based on the survey results. .
上記検査は、複数箇所における管底高さを直接
測量するものであるため、配管の設置状態を比較
的正確に検査し得る。しかしながら、作業者が管
内に入り、ターゲツトを複数箇所に順次移動する
と共に管底に垂直に設置する必要があるため、検
査作業が繁雑であると共に、作業者が入り得ない
小径の配管には適用し得ないという問題点があ
る。 Since the above-mentioned inspection directly measures the pipe bottom height at a plurality of locations, the installation state of the piping can be inspected relatively accurately. However, the inspection work is complicated as it requires a worker to enter the pipe, move the target to multiple locations in sequence, and install it vertically on the bottom of the pipe, and it is not suitable for small-diameter pipes where workers cannot enter. The problem is that it cannot be done.
（考案の目的）
本考案は上記従来の状況に鑑みてなされたもの
であり、その目的は繁雑な作業を必要とせず正確
に測量することができ、しかも作業者は入り得な
い小径管にも適用し得る配管の管底高さ測量用タ
ーゲツトを提供することにある。(Purpose of the invention) The present invention was made in view of the above-mentioned conventional situation, and its purpose is to enable accurate surveying without the need for complicated work, and to enable measurement even in small-diameter pipes that workers cannot enter. The object of the present invention is to provide a target for measuring the pipe bottom height of pipes that can be applied.
（考案の構成）
本考案は、配管の設置状態を管底高さを測量す
ることにより検査する際に用いられる配管の管底
高さ測量用ターゲツトであつて、上下方向に目盛
が形成されたターゲツト本体の下端にボール状体
を回転自在に設けると共に、上記ターゲツト本体
を夫々の先端にボール状体が回転自在に設けられ
た前後左右の支持脚により支持することにより、
測量時上記ターゲツト本体のボール状体が管底に
沿つて移動し、かつ上記ターゲツト本体が管底に
ほぼ垂直に設置されるように構成されている。(Structure of the invention) The present invention is a target for measuring the height of the bottom of a pipe, which is used when inspecting the installed state of the pipe by measuring the height of the bottom of the pipe, and has a scale formed in the vertical direction. A ball-shaped body is rotatably provided at the lower end of the target body, and the target body is supported by front, rear, left and right support legs each having a ball-shaped body rotatably provided at the tip of each target body.
The ball-shaped body of the target body moves along the tube bottom during surveying, and the target body is installed substantially perpendicular to the tube bottom.
すなわち、本考案の構成上の特徴は、上下方向
に目盛が形成され、下端にボール状体が回転自在
に設けられたターゲツト本体と、該ターゲツト本
体の前後左右に突出し、上下方向に所定範囲回転
自在でかつ先端が下向に弾性付勢して設けられ、
先端にボール状体が回転自在に設けられた前方支
持脚、後方支持脚、左方支持脚及び右方支持脚と
を備えてなり、上記前方支持脚及び後方支持脚は
下限位置においてボール状体の下端が上記ターゲ
ツト本体のボール状体の下端よりも下方の位置に
設けられ、上記左方支持脚及び右方支持脚は互い
に左右対称で、かつ下限位置においてボール状体
の下端が上記ターゲツト本体のボール状体の下端
よりも上方の位置に設けられていることにある。 That is, the structural features of the present invention include a target body having a scale formed in the vertical direction and a ball-shaped body rotatably provided at the lower end, and a target body that protrudes from the front, back, left and right of the target body and can be rotated within a predetermined range in the vertical direction. It is flexible and the tip is elastically biased downward.
It is equipped with a front support leg, a rear support leg, a left support leg, and a right support leg, each of which has a ball-shaped body rotatably provided at its tip, and the front support leg and the rear support leg have a ball-shaped body at the lower limit position. The lower end of the target body is located below the lower end of the ball-like body of the target body, the left support leg and the right support leg are symmetrical to each other, and the lower end of the ball-like body is located below the target body at the lower limit position. It is located above the lower end of the ball-shaped body.
（実施例） 本考案の実施例を図に基いて説明する。(Example) An embodiment of the present invention will be explained based on the drawings.
（第１実施例）
第１実施例を第１〜５図及び第８図に基いて説
明する。図において、１は配管の管底高さ測量用
ターゲツト（以下ターゲツトという）、２はター
ゲツト本体である。該ターゲツト本体２は、基台
３と、該基台３の上面中央に垂直に設置された測
定定規４と、基台３の下面中央にリテーナ６によ
り回転自在に支持されたボール状体５とを備え、
測量時に配管内を移動しかつ配管の管底に垂直に
設置されるように、ターゲツト本体２の前後左右
には前方支持脚２０、後方支持脚２１、左方支持
脚２２及び右方支持脚２３が夫々設けられてい
る。(First Example) A first example will be described based on FIGS. 1 to 5 and FIG. 8. In the figure, 1 is a target for measuring the height of the bottom of a pipe (hereinafter referred to as a target), and 2 is a target body. The target body 2 includes a base 3, a measuring ruler 4 vertically installed at the center of the upper surface of the base 3, and a ball-shaped body 5 rotatably supported by a retainer 6 at the center of the lower surface of the base 3. Equipped with
A front support leg 20, a rear support leg 21, a left support leg 22, and a right support leg 23 are provided on the front, rear, left, and right sides of the target body 2 so that the target body 2 can be moved inside the pipe and installed perpendicularly to the bottom of the pipe during surveying. are provided for each.
測定定規４は前板７が透明な板状体である縦長
の箱状体で、前板７には目盛が書込まれた目盛紙
８が貼着されている。目盛紙８の目盛は、ボール
状体５の下端を零として書込まれており、後述す
るように配管内に設置した状態においてはボール
状体５の下端が管底に当接していることから、各
位置における管底と測量器Ｌの水準線（図示せ
ず）により設定された基準線との距離を表示する
ことになる。なお、目盛は上記ボール状体５の下
端以外を零として書込まれたものであつてもよ
い。 The measuring ruler 4 is a vertically elongated box-shaped body whose front plate 7 is a transparent plate-shaped body, and a scale paper 8 on which a scale is written is pasted to the front plate 7. The scale of the scale paper 8 is written with the lower end of the ball-shaped body 5 as zero, and as will be described later, the lower end of the ball-shaped body 5 is in contact with the tube bottom when installed in the pipe. , the distance between the tube bottom at each position and the reference line set by the level line (not shown) of the surveying instrument L is displayed. Incidentally, the scale may be written with zero at points other than the lower end of the ball-shaped body 5.
測定定規４の内部には目盛を照明するようにラ
ンプ９が上下２箇所に配置され、該ランプ９はス
イツチ１０を介して電源用電池１１に接続されて
いる。従つて、配管内に設置する際にはランプ９
を点灯することにより目盛が照明され、他に照明
手段を必要とすることなく目盛を読取ることがで
きる。ナオ、ランプ９の光に眩惑されず目盛を読
取るためには、目盛紙８の上面に緑色フイルム等
の防眩材が設けられていることが好ましいが、目
盛紙８又は測定定規４の前板７が防眩材で成形さ
れていてもよい。 Inside the measuring ruler 4, lamps 9 are arranged at two locations, upper and lower, to illuminate the scale, and the lamps 9 are connected to a power source battery 11 via a switch 10. Therefore, when installing inside the pipe, the lamp 9
By lighting up the scale, the scale is illuminated, and the scale can be read without requiring any other illumination means. In order to read the scale without being dazzled by the light from the lamp 9, it is preferable that an anti-glare material such as a green film be provided on the top surface of the scale paper 8. 7 may be formed of an anti-glare material.
測定定規４の上部両側には、第５図に示す補助
測定定規１４を取付ける取付ネジ１２が設けられ
ており、該取付ネジ１２には補助測定定規１４の
内部に設けられたランプ１９を電気的に接続する
接続端子（図示せず）が連結されている。補助測
定定規１４は第５図に示すように、下端両側に取
付孔１６が形成された取付部１５が設けられ、測
定定規４と同様に前板１７に目盛紙１８が貼着さ
れた縦長の箱状体であり、管径の大きな配管を検
査する際に測定定規４に取付けて使用される。 Mounting screws 12 are provided on both sides of the upper part of the measuring ruler 4 to attach the auxiliary measuring ruler 14 shown in FIG. A connection terminal (not shown) is connected to the terminal. As shown in FIG. 5, the auxiliary measuring ruler 14 is a vertically long shape having a mounting part 15 with mounting holes 16 formed on both sides of the lower end, and a scale paper 18 pasted on the front plate 17 like the measuring ruler 4. It is a box-shaped body and is used by being attached to the measuring ruler 4 when inspecting piping with a large diameter.
基台３に設けられたボール状体５は、鋼材等で
形成されており、測定定規４よりも重く形成され
ていることが好ましく、ターゲツト本体２は重心
がボール状体５側すなわち下方に位置し、大きな
支持力を必要とすることなく垂直に設置されるこ
とになる。なお、ボール状体５は防錆材製又は防
錆処理されたものであることが好ましい。 The ball-shaped body 5 provided on the base 3 is made of steel or the like, and is preferably made heavier than the measuring ruler 4, and the center of gravity of the target body 2 is located on the side of the ball-shaped body 5, that is, below. However, it can be installed vertically without requiring a large supporting capacity. In addition, it is preferable that the ball-shaped body 5 is made of a rust-proofing material or is treated with a rust-proofing treatment.
前方支持脚２０及び後方支持脚２１は、角筒状
の基部２８が基台３の前側又は後側に設けられた
軸受部２４にピン２５により回転自在に支持さ
れ、上記基部２８の一端には先端にボール状体３
０が肩自在に支持されたＬ字状の脚部２９が摺動
可能に装着され、かつ固定ねじ３１により固定連
結されている。上記基部２８の他端下方には第４
図に示すように、圧縮バネ２６が当接して設けら
れ、該圧縮バネ２６により上記一端いいかえれば
脚部２９は下向きに弾性付勢されると共に、上限
位置が規制されている。一方、上記他端上方には
一対のストツパ２７が設けられ、該ストツパ２７
により上記脚部２９の下限位置が規制されてい
る。なお、脚部２９は、下限位置において先端の
ボール状体３０の下端がターゲツト本体のボール
状体５の下端よりも下方に突出するように設けら
れている。 The front support leg 20 and the rear support leg 21 have a rectangular cylindrical base 28 rotatably supported by a pin 25 on a bearing 24 provided on the front or rear side of the base 3. Ball-shaped body 3 at the tip
An L-shaped leg part 29 on which the shoulder part 0 is freely supported is slidably mounted and fixedly connected by a fixing screw 31. Below the other end of the base 28 is a fourth
As shown in the figure, a compression spring 26 is provided in contact with the leg portion 29, and in other words, the leg portion 29 is elastically biased downward and its upper limit position is regulated by the compression spring 26. On the other hand, a pair of stoppers 27 are provided above the other end, and the stoppers 27
The lower limit position of the leg portion 29 is regulated by this. The leg portion 29 is provided such that the lower end of the ball-shaped body 30 at the tip protrudes below the lower end of the ball-shaped body 5 of the target body at the lower limit position.
また、前方支持脚２０及び後方支持脚２１は、
各ボール状体３０の中心がターゲツト本体のボー
ル状体５の中心を通る前後方向の垂直面内に位置
するように設けられている。従つて、ターゲツト
１を配管内に設置した際には、前方支持脚２０、
後方支持脚２１及びターゲツト本体２の各ボール
状体５，３０が配管の管底に沿つて移動し、ター
ゲツト本体２は測定定規４が前方に向いた状態で
設置されることになる。 Further, the front support leg 20 and the rear support leg 21 are
The center of each ball-shaped body 30 is located within a vertical plane in the front-rear direction passing through the center of the ball-shaped body 5 of the target body. Therefore, when the target 1 is installed inside the pipe, the front support legs 20,
The rear support legs 21 and the ball-shaped bodies 5, 30 of the target main body 2 move along the bottom of the pipe, and the target main body 2 is installed with the measuring ruler 4 facing forward.
左方支持脚２２及び右方支持脚２３は、脚部２
９の先端が僅かに下方に傾斜して形成され、かつ
先端に回転自在に設けられたボール状体３０の下
端が下限位置においてターゲツト本体のボール状
体５を下端より上方に設けられていることを除い
ては、前方支持脚２０及び後方支持脚２１と同一
の構造であり、角筒状の基部２８が基台３の左側
又は右側に設けられた軸受部２４にピン２５によ
り回転自在に支持され、脚部２９が基部２８の一
端に摺動可能に装着され、かつ固定ねじ３１によ
り固定連結されている。そして、左方支持脚２２
と右方支持脚２３とは、ターゲツト本体のボール
状体５の中心を通る前後方向の垂直面に対して対
称に設けられ、かつ各支持脚２２，２３のボール
状体３０の中心がターゲツト本体のボール状体５
の中心を通り上記垂直面に対して直角な垂直面内
に位置するように設けられている。従つて、ター
ゲツト本体２は、配管内に設置された際には左方
支持脚２２と右方支持脚２３の各ボール状体３０
が管壁に当接し、配管の中心を通る垂直面内に設
置されることになる。 The left support leg 22 and the right support leg 23 are
The tip of the target body 9 is formed with a slight downward inclination, and the lower end of the ball-shaped body 30 rotatably provided at the tip is provided above the lower end of the ball-shaped body 5 of the target body at the lower limit position. The structure is the same as that of the front support leg 20 and the rear support leg 21 except that a square tubular base 28 is rotatably supported by a pin 25 on a bearing 24 provided on the left or right side of the base 3. The leg portion 29 is slidably attached to one end of the base portion 28 and is fixedly connected by a fixing screw 31. And the left support leg 22
and the right support leg 23 are provided symmetrically with respect to a vertical plane in the front-rear direction passing through the center of the ball-shaped body 5 of the target body, and the center of the ball-shaped body 30 of each support leg 22, 23 is located at the target body. ball-shaped body 5
is located in a vertical plane that passes through the center of and is perpendicular to the vertical plane. Therefore, when the target main body 2 is installed in the piping, each of the ball-shaped bodies 30 of the left support leg 22 and the right support leg 23
is placed in a vertical plane that abuts the pipe wall and passes through the center of the pipe.
なお、上記各支持脚２０〜２３を下向に弾性付
勢する圧縮バネ２６の弾性力はターゲツト本体２
に相対的に上向の力として作用するが、各圧縮バ
ネ２６の弾性力の総和は上記ターゲツト本体２に
作用する力がターゲツト本体２の重量よりも小さ
く設定されている。従つて、ターゲツト１を配管
内に設置した際には、前方支持脚２０及び後方支
持脚２１が管底に当接し、左方支持脚２２及び右
方支持脚２３が管壁に当接するが、ターゲツト本
体２は自重により上記各圧縮バネ２６の弾性力に
抗して下降し、ターゲツト本体のボール状体５が
管底に当接することになる。すなわち、ターゲツ
ト本体２は、そのボール状体５及び各支持脚２０
〜２３のボール状体３０が配管の管底又は管壁に
当接した状態で支持されることになる。 Note that the elastic force of the compression spring 26 that elastically biases each of the support legs 20 to 23 downward is applied to the target body 2.
The total elastic force of each compression spring 26 is set so that the force acting on the target body 2 is smaller than the weight of the target body 2. Therefore, when the target 1 is installed in a pipe, the front support leg 20 and the rear support leg 21 contact the pipe bottom, and the left support leg 22 and right support leg 23 contact the pipe wall. The target body 2 descends due to its own weight against the elastic force of each of the compression springs 26, and the ball-shaped body 5 of the target body comes into contact with the tube bottom. That is, the target main body 2 includes its ball-shaped body 5 and each support leg 20.
-23 ball-shaped bodies 30 are supported in contact with the bottom or wall of the pipe.
また、ターゲツト１を移動する際、ターゲツト
本体２の重心が低く設定され、ターゲツト本体２
及び各支持脚２０〜２３に設けられたボール状体
５，３０が各方向に回転自在であり、各ボール状
体５，３０が配管に当接した状態であるため、タ
ーゲツト本体２はそのボール状体５が常時配管の
各断面における低い箇所である管底に沿つて移動
することになり、しかも左方支持脚２２と右方支
持脚２３とが左右対称に設けられているため、管
底に垂直な状態で移動されることになる。 Also, when moving the target 1, the center of gravity of the target body 2 is set low, and the target body 2
The ball-shaped bodies 5 and 30 provided on each of the support legs 20 to 23 are rotatable in each direction, and each of the ball-shaped bodies 5 and 30 is in contact with the piping, so that the target main body 2 The shaped body 5 always moves along the pipe bottom, which is a low point in each cross section of the pipe, and since the left support leg 22 and the right support leg 23 are provided symmetrically, the pipe bottom It will be moved perpendicular to.
第１実施例は以上のように構成されており、そ
の使用方法の１例を第８図に基いて説明する。第
８図は高い側の第１マンホールM1と低い側の第
２マンホールM2とを接続し、地中Ｅに埋設され
た下水道管Ｐの設置状態を検査する際におけるタ
ーゲツト１と測量器Ｌとの関係を示したものであ
る。先ず、測量器Ｌを第２マンホールM2に設置
し、測量器Ｌの水準線を下水道管Ｐの設置勾配に
相当した角度に調整する。そして、ターゲツト１
を第１マンホールM1側の下水道管Ｐに設置し、
測量器Ｌの水準線が測定定規４の所定目盛、例え
ば15cmの目盛と合致するように測量器Ｌの高さを
調整して基準線を設定する。なお、ターゲツト１
を第１マンホールM1側に設置する際、予め下水
道管Ｐの管径に合わせて左方支持脚２２及び右方
支持脚２３の突出量が調整され、ライト９が点灯
されている。また、前方支持脚２０にはボール上
体３０の上方に距離測定用テープ、例えば巻尺５
３をその先端に設けられた□状の金具（図示せ
ず）を嵌挿することにより連結し、後方支持脚２
１には移動量調整用のワイヤ５５が連結されてい
る。そして、巻尺の巻取筒５４を第２マンホール
M2側に配置され、上記ワイヤ５５の他端は第１
マンホールM1側に配置されており、夫々作業者
（図示せず）によつて操作されることになる。 The first embodiment is constructed as described above, and one example of its usage will be described with reference to FIG. 8. Figure 8 shows a target 1 and a surveying instrument L used to connect the first manhole M1 on the high side and the second manhole M2 on the low side, and to inspect the installation state of the sewer pipe P buried underground E. This shows the relationship between First, the surveying instrument L is installed in the second manhole M2 , and the level line of the surveying instrument L is adjusted to an angle corresponding to the installation slope of the sewer pipe P. And target 1
is installed on the sewer pipe P on the first manhole M1 side,
A reference line is set by adjusting the height of the surveying instrument L so that the level line of the surveying instrument L matches a predetermined scale of the measuring ruler 4, for example, a 15 cm scale. In addition, target 1
When installing on the first manhole M1 side, the protrusion amount of the left support leg 22 and the right support leg 23 is adjusted in advance according to the diameter of the sewer pipe P, and the light 9 is turned on. Further, on the front support leg 20, a distance measuring tape, for example, a tape measure 5 is attached above the ball's upper body 30.
3 are connected by fitting and inserting a square-shaped metal fitting (not shown) provided at the tip of the rear support leg 2.
1 is connected to a wire 55 for adjusting the amount of movement. Then, insert the winding tube 54 of the tape measure into the second manhole.
The other end of the wire 55 is placed on the M2 side, and the other end of the wire 55 is connected to the first
They are placed on the manhole M1 side and are operated by respective workers (not shown).
以上の準備が整つた段階で巻取筒５４を操作し
て巻尺５３を緩くり所定寸法巻取り、ターゲツト
１をＡ矢印方向に所定寸法移動する。そして、測
量器Ｌにより水準線と合致する測定定規４の目
盛、すなわち点線Ｂで示す線と合致する目盛を読
取る。以降、同様にしてターゲツト１を所定寸法
移動する毎にターゲツトの目盛を読取る。 At the stage where the above preparations are completed, the winding tube 54 is operated to loosen the tape measure 53 and wind it up by a predetermined length, and the target 1 is moved by a predetermined length in the direction of arrow A. Then, the scale of the measurement ruler 4 that matches the level line, that is, the scale that matches the line indicated by the dotted line B, is read by the surveying instrument L. Thereafter, the scale of the target is read in the same manner every time the target 1 is moved by a predetermined distance.
上記読取られた目盛は、上記したようにターゲ
ツト本体のボール状体５が下水道管Ｐの管底にほ
ぼ垂直に設置され、しかも測量器Ｌの水準線が所
定の勾配を示す基準線であることから、各位置に
おける管底と基準線との距離を示し、基準線の目
盛との比較により所定の勾配の管底に対する相対
的な高さが測量されることになる。すなわち、読
取られた目盛が15cmである場合には基準線の目盛
と同一であつて、該位置における下水道管Ｐの管
底は所定の勾配に沿つた適正な高さであり、そし
て例えば読取られた目盛が14.5cm場合には、該位
置における管底は所定の勾配の管底より0.5cm高
いと測量され、逆に15.5cmである場合には0.5cm
低いと測量されることになる。従つて、各位置に
おける測量結果を例えば図表に示すことによつ
て、下水道管Ｐ全体の設置状態を検査することが
できる。 The scale read above indicates that the ball-shaped body 5 of the target body is installed almost perpendicularly to the bottom of the sewer pipe P as described above, and that the level line of the surveying instrument L is a reference line indicating a predetermined slope. The distance between the tube bottom and the reference line at each position is shown, and by comparison with the scale of the reference line, the relative height of a predetermined slope with respect to the tube bottom can be measured. That is, if the scale read is 15 cm, it is the same as the scale of the reference line, and the bottom of the sewer pipe P at that position is at an appropriate height along a predetermined slope, and, for example, the scale read is 15 cm. If the scale is 14.5 cm, the bottom of the pipe at that position is measured to be 0.5 cm higher than the bottom of the pipe with the specified slope, and conversely, if the scale is 15.5 cm, the bottom of the pipe at that position is 0.5 cm higher.
If it is low, it will be measured. Therefore, by showing the survey results at each position, for example, in a chart, it is possible to inspect the installation state of the entire sewer pipe P.
なお、上記下水道管Ｐの検査過程において、下
水道管Ｐは短尺のヒユーム管等が複数本接続され
たものであるため、各接続部において段差を生じ
ている場合があり、該接続部に前方支持脚２０の
ボール状体３０が係止される恐れがある。しかし
ながら、前方支持脚２０が弾性的に上下方向に回
転自在に支持されているため、巻尺５３によつて
移動する際に上方に回転され、上記のように段差
に係止されることがなく、円滑に移動されること
になる。また、下水道管Ｐの管径が大きい場合に
は、ターゲツト本体２の測定定規４に第５図に示
す補助測定定規１４を取り付けることにより、基
準線をより高い位置に設定することができ、測定
作業を容易に行なうことができる。 In addition, in the inspection process of the sewer pipe P mentioned above, since the sewer pipe P is made up of multiple short hump pipes etc. connected, there may be a difference in level at each connection part. There is a risk that the ball-shaped body 30 of the leg 20 may become stuck. However, since the front support leg 20 is supported elastically and rotatably in the vertical direction, it is rotated upward when moved by the tape measure 53 and is not stopped by the step as described above. It will be moved smoothly. Furthermore, when the diameter of the sewer pipe P is large, by attaching the auxiliary measuring ruler 14 shown in FIG. 5 to the measuring ruler 4 of the target body 2, the reference line can be set at a higher position and the measurement Work can be done easily.
（第２実施例）
第２実施例は第６〜７図に示すように、非使用
時に各支持脚２０〜２３を折り畳み、コンパクト
化し得るようにしたことを除いては、第１実施例
と同一の構成である。第６〜７図において、第１
〜５図と同一の符号は同一の機能部材を示す。(Second Embodiment) As shown in FIGS. 6 and 7, the second embodiment is the same as the first embodiment except that each support leg 20 to 23 can be folded up and made compact when not in use. They have the same configuration. In Figures 6 and 7, the first
The same reference numerals as in Figures 1 to 5 indicate the same functional members.
各支持脚２０〜２３は、基部２８が支持部材５
０にピン２５により上下方向に回転自在に取付け
られている。各支持部材あ50は、基台３の前後左
右に突出して設けられ、断面計上が上向のコ字状
に形成されており、先端には押圧部材５１が水平
方向に回転自在に取付けられている。押圧部材５
１は、各支持脚２０〜２３の基部２８を支持部材
５０に押圧保持する部材で、断面形状が横向のコ
字状に形成されており、上方部の下面にはゴム材
等の弾性部材５２が設けられている。各弾性部材
５２は第１実施例における圧縮バネ２６に相当
し、その弾性力の総和はターゲツト本体２の重量
より小さく設定されている。なお、各脚部２９は
第１実施例におけると同様に基部２８に摺動可能
に装着され、固定ねじ３１により固定連結されて
いる。 Each of the support legs 20 to 23 has a base 28 connected to the support member 5.
0 by a pin 25 so as to be freely rotatable in the vertical direction. Each support member 50 is provided so as to protrude from the front, rear, left and right sides of the base 3, and is formed in a U-shape with an upward cross section, and a pressing member 51 is attached to the tip so as to be rotatable in the horizontal direction. There is. Pressing member 5
Reference numeral 1 denotes a member that presses and holds the base 28 of each of the support legs 20 to 23 against the support member 50, and has a cross-sectional shape of a horizontal U-shape, and has an elastic member 52 such as a rubber material on the lower surface of the upper part. is provided. Each elastic member 52 corresponds to the compression spring 26 in the first embodiment, and the sum of their elastic forces is set to be smaller than the weight of the target body 2. Note that each leg 29 is slidably attached to the base 28 and fixedly connected by a fixing screw 31, as in the first embodiment.
各支持脚２０〜２３は以上のように構成されて
おり、測量時には実線で示すように押圧部材５１
により支持部材５０に押圧保持されている。すな
わち、各支持脚２０〜２３は押圧部材５１により
上限位置が規制され、支持部材５０により下限位
置が規制されると共に、第１実施例と同様に脚部
２８が上下方向に回転自在で、かつ下向きに弾性
付勢して設けられる。また、非使用時には押圧部
材５１を２点鎖線で示すように回転し、各支持脚
２０〜２３をターゲツト本体２の測定定規４の側
に回転して折り畳み、別途輪ゴム等の締結部材に
より測定定規４に固定し、ターゲツト１をコンパ
クトにすることができる。 Each of the support legs 20 to 23 is configured as described above, and during surveying, the pressing member 51 is used as shown by the solid line.
The support member 50 is pressed and held by the support member 50. That is, the upper limit position of each support leg 20 to 23 is regulated by the pressing member 51, the lower limit position is regulated by the support member 50, and the leg portion 28 is rotatable in the vertical direction as in the first embodiment. It is provided to be elastically biased downward. In addition, when not in use, the pressing member 51 is rotated as shown by the two-dot chain line, each support leg 20 to 23 is rotated and folded toward the measurement ruler 4 side of the target body 2, and the measurement ruler is attached using a separate fastening member such as a rubber band. 4, the target 1 can be made compact.
また、第２実施例のターゲツト１を使用して測
量する際には、第１実施例と同様に第８図に示す
ように下水道管Ｐ内に設置され、各位置における
管底の高さを同様に測量し得る。 In addition, when surveying using the target 1 of the second embodiment, it is installed inside the sewer pipe P as shown in Fig. 8, as in the first embodiment, and the height of the pipe bottom at each position is measured. It can be measured similarly.
上記各実施例において、各支持脚の脚部２８は
目盛が長手方向に形成されていることが好まし
い。特に、左右支持脚２２，２３については、適
用する配管の管径に対応した目盛が形成されてい
ることが好ましい。また、測定定規は目盛が前板
のみではなく後板にも形成されていることが好ま
しい。 In each of the embodiments described above, it is preferable that the leg portion 28 of each support leg has a scale formed in the longitudinal direction. In particular, it is preferable that the left and right support legs 22 and 23 have a scale corresponding to the diameter of the pipe to which they are applied. Moreover, it is preferable that the scale of the measuring ruler is formed not only on the front plate but also on the rear plate.
（考案の効果）
本考案の配管の管底高さ測量用ターゲツトは、
測定定規を備えたターゲツト本体がボール状体に
より支持されているため、測量時従来のように作
業者が配管内に持込み各位置に移動させる等の手
数を必要とすることがなく、配管の外部からの操
作により各位置に移動設置することができる。し
かも、ターゲツト本体は、そのボール状体が各位
置における管底に当接しかつほぼ垂直となるよう
に設置されるため、従来のように熟練を必要とす
ることなく各位置における管底の高さをほぼ正確
に測量することができる。従つて、配管の設置状
態を簡単かつ正確に検査することが可能となつ
た。(Effect of the invention) The target for measuring the pipe bottom height of this invention is
Since the target body equipped with a measuring ruler is supported by a ball-shaped body, there is no need for the worker to bring the target into the pipe and move it to each position during surveying, as in the case of conventional methods. It can be moved and installed in each position by operating from . Moreover, since the target body is installed so that its ball-shaped body is in contact with the tube bottom at each position and is almost vertical, the height of the tube bottom at each position can be adjusted without the need for skill as in the past. can be measured almost accurately. Therefore, it has become possible to easily and accurately inspect the installation state of the piping.
第１図は本考案の第１実施例の正面図、第２図
は同じく平面図、第３図は同じく側面図、第４図
は第２図の−線に沿つた部分拡大断面図、第
５図は本考案の実施例に適用する補助測定定規の
斜視図、第６図は本考案の第２実施例の正面図、
第７図は同じく平面図、第８図は本考案の実施例
の使用状態を説明する説明図である。
１……ターゲツト、２……ターゲツト本体、３
……基台、４……測定定規、５……ターゲツト本
体のボール状体、８……目盛紙、１４……補助測
定定規、２０〜２３……前後左右の支持脚、２４
……軸受部、２５……ピン、２６……圧縮バネ、
２７……ストツパ、３０……各支持脚のボール状
体、５０……支持部材、５１……押圧部材、５２
……弾性部材、Ｐ……下水道管。
1 is a front view of the first embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a side view, FIG. 4 is a partially enlarged sectional view taken along the line - in FIG. Figure 5 is a perspective view of an auxiliary measuring ruler applied to the embodiment of the present invention, and Figure 6 is a front view of the second embodiment of the present invention.
FIG. 7 is a plan view, and FIG. 8 is an explanatory diagram illustrating the usage state of the embodiment of the present invention. 1...Target, 2...Target body, 3
... Base, 4 ... Measuring ruler, 5 ... Ball-shaped body of target body, 8 ... Graduation paper, 14 ... Auxiliary measuring ruler, 20 to 23 ... Front, rear, left and right support legs, 24
... Bearing part, 25 ... Pin, 26 ... Compression spring,
27... Stopper, 30... Ball-shaped body of each support leg, 50... Support member, 51... Pressing member, 52
...Elastic member, P...Sewerage pipe.
Claims (1)
り検査する際に用いられる配管の管底高さ測量用
ターゲツトにおいて、上下方向に目盛が形成さ
れ、下端にボール状体が回転自在に設けられたタ
ーゲツト本体と、該ターゲツト本体の前後左右に
突出し、上下方向に所定範囲回転自在でかつ先端
が下向に弾性付勢して設けられ、先端にボール状
体が回転自在に設けられた前方支持脚、後方支持
脚、左方支持脚及び右方支持脚とを備えてなり、
上記前方支持脚及び後方支持脚は下限位置におい
てボール状体の下端が上記ターゲツト本体のボー
ル状体の下端よりも下方の位置に設けられ、上記
左方支持脚及び右方支持脚は互いに左右対称で、
かつ下限位置において各ボール状体の下端が上記
ターゲツト本体のボール状体の下端よりも上方の
位置に設けられていることを特徴とする配管の管
底高さ測量用ターゲツト。 A target for measuring the bottom height of a pipe, which is used when inspecting the installation condition of a pipe by measuring the height of the bottom of the pipe, has a scale formed in the vertical direction and a ball-shaped body rotatably provided at the bottom end. a front support that protrudes from the front, back, left and right of the target body, is rotatable within a predetermined range in the vertical direction, has a tip elastically biased downward, and has a ball-shaped body rotatably provided at the tip. A leg, a rear support leg, a left support leg, and a right support leg,
The front support leg and the rear support leg are provided with the lower end of the ball-shaped body at a position lower than the lower end of the ball-shaped body of the target body at the lower limit position, and the left support leg and the right support leg are symmetrical to each other. in,
A target for measuring the height of the bottom of a pipe, characterized in that, at the lower limit position, the lower end of each ball-like member is provided at a position above the lower end of the ball-like member of the target main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13565087U JPH0447611Y2 (en) | 1987-09-05 | 1987-09-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13565087U JPH0447611Y2 (en) | 1987-09-05 | 1987-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440013U JPS6440013U (en) | 1989-03-09 |
| JPH0447611Y2 true JPH0447611Y2 (en) | 1992-11-10 |
Family
ID=31395466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13565087U Expired JPH0447611Y2 (en) | 1987-09-05 | 1987-09-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447611Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2550317Y2 (en) * | 1989-06-09 | 1997-10-08 | 清隆 伊藤 | Pipe core indexing and height measuring device for laid pipes |
| JP2555400Y2 (en) * | 1990-07-13 | 1997-11-19 | 清隆 伊藤 | Aiming mechanism of laser measuring instrument |
| JP5873535B1 (en) * | 2014-07-30 | 2016-03-01 | 株式会社アカツキ製作所 | Green level |
-
1987
- 1987-09-05 JP JP13565087U patent/JPH0447611Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6440013U (en) | 1989-03-09 |
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