JP2020106440A - Contact type non-destructive test device with protection member and non-destructive test method - Google Patents

Contact type non-destructive test device with protection member and non-destructive test method Download PDF

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JP2020106440A
JP2020106440A JP2018246426A JP2018246426A JP2020106440A JP 2020106440 A JP2020106440 A JP 2020106440A JP 2018246426 A JP2018246426 A JP 2018246426A JP 2018246426 A JP2018246426 A JP 2018246426A JP 2020106440 A JP2020106440 A JP 2020106440A
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protection member
input device
protective member
receiving device
test
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JP7228834B2 (en
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良治 川合
Ryoji Kawai
良治 川合
謙一 田川
Kenichi Tagawa
謙一 田川
祥樹 松島
Yoshiki Matsushima
祥樹 松島
貫次 松橋
Kanji Matsuhashi
貫次 松橋
栗原　秀夫
Hideo Kurihara
秀夫 栗原
栗原　陽一
Yoichi Kurihara
陽一 栗原
紀之 歌川
Noriyuki Utagawa
紀之 歌川
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Sato Kogyo Co Ltd
Central Japan Railway Co
Onga Engineering Co Ltd
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Sato Kogyo Co Ltd
Central Japan Railway Co
Onga Engineering Co Ltd
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Abstract

To prevent an input device and receiving device from colliding with a step part of a structure surface and a deep groove thereof, and correctly implement a non-destructive test upon mounting a protection member to a test device to thereby check defect portions (deformed parts) occurring in structures such as a concrete and the like by the non-destructive test.SOLUTION: A contact type non-destructive test device comprises, inside a structure C,: an input device 6 that inputs an elastic wave while contacting with a surface of the structure C with prescribed pressure force by a lifting mechanism 13 and pressure mechanism 14; a reception device 7 that receives the elastic wave propagating through the structure C while contacting with the surface of the structure C with the prescribed pressure force by the lifting mechanism 13 and pressure mechanism 14; a device main body 3 that has a running wheel 4 making the input device 6 and reception device 7 move together; and protection members 15 and 16 that, for protecting the input device 6 and reception device 7, have tilting parts 15a and 16b provided respectively in the input device 6 and reception device 7 and contacting with concavity/convexity part and step of the surface of the structure C.SELECTED DRAWING: Figure 1

Description

本発明は、コンクリート等の構造物内部に生じたひび割れ、空洞などの欠陥個所（変状部）や内部の物性について、弾性波・超音波等の検出部を構造物表面に接触させ、構造物を破壊することなく、変状部の有無・位置・形状、内部の物性などを試験する技術に係り、特に構造物表面と検出部の接触状態を保ちながら、連続的に異なる箇所を検査する方式の試験装置が構造物の段差部、溝における衝突を防止する防護部材付き接触式非破壊試験装置及びその非破壊試験方法に関する。 The present invention relates to a structure such as cracks, cavities, and other defective portions (deformation portions) generated inside a structure such as concrete, and internal physical properties by contacting a detection unit such as an elastic wave or an ultrasonic wave with the surface of the structure. It is related to the technology to test the presence/absence/position/shape of the deformed part and the physical properties of the inside without destroying the structure, especially the method to inspect different parts continuously while maintaining the contact state between the structure surface and the detection part. Relates to a contact-type nondestructive testing device with a protective member for preventing a collision in a stepped portion or a groove of a structure, and a nondestructive testing method thereof.

コンクリート構造物は、トンネル、橋梁などの大型構造物が多い。コンクリート構造物の欠陥に関しては、建設時の施工不良、建設後の静的な外力や、疲労、鉄筋腐食に伴う膨張圧などによるコンクリート内部のひび割れ、ＰＣグラウト（プレストレストコンクリート注入材）の充填度等が評価対象となる。このような欠陥の存在はコンクリート構造物の耐荷重性能、耐久性に大きな影響を与えるものであり、内部のひび割れ等の検出はコンクリート構造物の維持に重要なことである。 Many concrete structures are large structures such as tunnels and bridges. Regarding the defects of concrete structures, construction defects during construction, static external force after construction, internal cracking of concrete due to fatigue, expansion pressure due to corrosion of reinforcing bars, filling degree of PC grout (prestressed concrete injection material), etc. Will be evaluated. The presence of such defects has a great influence on the load bearing performance and durability of the concrete structure, and the detection of internal cracks and the like is important for maintaining the concrete structure.

コンクリート構造物の物性に関しては、コンクリート構造物を部分的に破壊して検査されることも多いが、コンクリートの強度、密実さ、塩分などの有害物質の存在量等、非破壊検査により外部から調査できるものも多く、これらの情報はコンクリート構造物の現在の耐荷重性能を評価するのみならず、将来の劣化状態を推定するために重要なことである。 Regarding the physical properties of concrete structures, it is often inspected by partially destroying the concrete structure, but from the outside by non-destructive inspection such as concrete strength, solidity, the amount of harmful substances such as salt, etc. There is much that can be investigated, and this information is important not only for assessing the current load-bearing capacity of concrete structures, but also for estimating future deterioration conditions.

これらコンクリート欠陥及び物性の試験は共に、コンクリート構造物が屋外にあり、大型であるため、広い面積を短時間に効率的に検査したいとする要求は強い。 In both the concrete defect test and the physical property test, there is a strong demand to efficiently inspect a large area in a short time because the concrete structure is outdoors and is large.

コンクリート構造物に関する欠陥及び物性の試験法については、種々の試験方法が実用化されている。例えば、弾性波を利用した非破壊試験には、衝撃弾性波法、超音波法等がある。その他に、打撃によりコンクリート中に弾性波を発生させ、この弾性波がコンクリート表面から空気中に放射されたものを測定する打音法がある。この打音法はコンクリートのひび割れ及び剥離、内部空隙範囲の検出に利用されている。更に、コンクリートのひび割れに伴って発生し伝搬する弾性波を検出し、コンクリート表面にＡＥ変換子（センサ）を設置して検出するアコースティック・エミッション（ＡＥ Ａcoustic Emission)法がある。このＡＥ法はコンクリートのひび割れの発生・進展位置の検出に利用されている。 Various test methods have been put into practical use for the test methods for defects and physical properties of concrete structures. For example, a non-destructive test using elastic waves includes a shock elastic wave method and an ultrasonic method. In addition, there is a tapping method in which an elastic wave is generated in concrete by hitting and the elastic wave radiated from the concrete surface into the air is measured. This tapping method is used for cracking and peeling of concrete and detection of internal void areas. Further, there is an acoustic emission (AE Acoustic Emission) method in which an elastic wave generated and propagated along with cracking of concrete is detected and an AE transducer (sensor) is installed on the concrete surface to detect. This AE method is used to detect the location of crack initiation/propagation in concrete.

このような各種試験は、構造物に接触させて試験を行うタイプと、構造物に接触させずに試験を行うタイプに２分される。接触させて試験を行うタイプの装置は、手で保持・移動し検査箇所毎に構造物に接触させる等により離散的な箇所の試験に用いられることが多いが、構造物に接触させずに試験を行うタイプに比べ欠陥の検出能力が高い等の利点があるため、広範囲を連続的に点検したいとする需要に対して、車輪を備えた走行装置に搭載する等様々な提案がなされている。 Such various tests are divided into two types: a type in which the test is performed by contacting the structure and a type in which the test is performed without contacting the structure. A device of the type that conducts a test by contacting it is often used for testing discrete points by holding and moving it by hand and contacting the structure at each inspection point, but testing without contacting the structure Since there are advantages such as higher defect detection capability than the type that performs the above, various proposals have been made such as mounting on a traveling device equipped with wheels to meet the demand for continuously inspecting a wide area.

例えば走行式の非破壊試験装置５１は、図１６に示すように、試験装置５２を搭載した装置本体５３の周囲に４個の走行車輪５４を備えたものである。この非破壊試験装置５１は、コンクリート構造物の表面に沿って試験しながら移動するようになっている。非破壊試験装置５１は、図１７に示すように、支持装置５５で支持されて走行するようになっている。または図示していないが、トンネル内を走行する台車に設けられた昇降装置、アームなどで支持されて走行するものもある。 For example, as shown in FIG. 16, the traveling-type nondestructive testing device 51 is provided with four traveling wheels 54 around a device body 53 on which the testing device 52 is mounted. This nondestructive testing device 51 is designed to move along the surface of a concrete structure while performing a test. As shown in FIG. 17, the nondestructive testing device 51 is supported by a supporting device 55 and runs. Alternatively, although not shown, there is a vehicle which is supported by an elevating device, an arm, or the like provided on a truck traveling in a tunnel.

このような試験装置を走行させながら非破壊試験に関する技術として、例えば特許文献１の特開２００２−３０３６１０公報「コンクリート健全度判定方法及び装置」のように、コンクリート表面をハンマで打撃して、該打撃音を解析することによりコンクリートの健全度を判定する装置であって、コンクリートを打撃する打撃手段と、この打撃手段から離れた位置に配置する受音手段と、採取した伝播打撃音を解析する解析部から成り、該受音手段は、コンクリート中を伝播した打撃音（振動）を空気振動として採取するマイクロホンと、該マイクロホンが内装されるものであり、受音方向が解放されているフード部材とで構成されるコンクリート健全度判定装置において、前記ハンマ、マイクロホン及びフード部材が組み込まれた検査ロボットを、被検査コンクリートの表面に配置した走行レールに沿って走行可能に配設すると共に、該検査ロボットの走行時には、前記フード部材の受音開放端部を被検査コンクリート面から離開させ、停止時（検査時）には被検査コンクリート面に接触させることにより、検査ロボットを連続的に走行・停止させることによりコンクリートの状態を連続的に検査する構成であるコンクリート健全度判定装置が提案されているが、コンクリート中を伝播した打撃音（振動）を空気振動として採取することから周囲の騒音の影響を受けやすいという欠点を有する。 As a technique related to a nondestructive test while running such a test device, for example, as in Japanese Patent Laid-Open No. 2002-303610 “Concrete soundness determination method and device”, the concrete surface is hit with a hammer to A device for determining soundness of concrete by analyzing impact sound, impacting means for impacting concrete, sound receiving means arranged at a position distant from this impacting means, and analysis of collected propagating impact sound The sound receiving means is a hood member in which the sound receiving means includes a microphone for collecting impact sound (vibration) propagating in concrete as air vibration and the microphone, and the sound receiving direction is released. In the concrete soundness determination device configured by, the hammer, the microphone, and the inspection robot in which the hood member is incorporated are arranged so as to be able to travel along a traveling rail arranged on the surface of the concrete to be inspected, and the inspection is performed. When the robot is running, the sound receiving open end of the hood member is separated from the concrete surface to be inspected, and when stopped (at the time of inspection) it is brought into contact with the concrete surface to be inspected, so that the inspection robot is continuously run/stopped. Although a concrete soundness determination device that is configured to continuously inspect the condition of concrete by making it possible has been proposed, the impact sound (vibration) propagating in the concrete is collected as air vibration, so the influence of ambient noise It has a drawback that it is easily received.

更に、入力装置・受信装置のセンサ部の破損を回避すべく、入力装置・受信装置（センサ部）とは別のセンサを設け(図示せず)、これでコンクリート構造物表面の凹凸状態を検出し、必要により入力装置・受信装置（センサ部）を凹凸部分から回避させて走行させる構成の非破壊試験装置も提案されている。 Furthermore, in order to avoid damage to the sensor part of the input device/receiver device, a sensor (not shown) other than the input device/receiver device (sensor part) is installed to detect the unevenness of the concrete structure surface. However, there is also proposed a nondestructive testing device having a configuration in which the input device/reception device (sensor unit) is allowed to run away from the uneven portion if necessary.

特開２００２−３０３６１０公報JP 2002-303610 A

走行式非破壊試験装置５１に備えられる試験装置５２は、例えばコンクリート構造物Ｃ内に弾性波を入力する打撃ハンマなどの入力装置５２ａと、このコンクリート構造物Ｃで伝播した弾性波をコンクリート表面の振動として車輪を介し直接計測する加速度センサ、ＡＥセンサなどの受信装置５２ｂとを備えたものである。受信装置５２ｂが構造物に直接接触し、構造物の振動を直接計測することから、検査に際し周囲の騒音等の影響を受けにくい。 The test device 52 provided in the traveling-type nondestructive testing device 51 includes, for example, an input device 52a such as an impact hammer that inputs an elastic wave into the concrete structure C, and an elastic wave propagated by the concrete structure C on the concrete surface. It is provided with a receiving device 52b such as an acceleration sensor or an AE sensor that directly measures vibrations via wheels. Since the receiving device 52b directly contacts the structure and directly measures the vibration of the structure, it is unlikely to be affected by ambient noise or the like during the inspection.

これらの入力装置５２ａと受信装置５２ｂは、図１６（ａ）に示すように、点検対象が平坦な面であれば、走行式非破壊試験装置５１を問題なく走行させることができる。また、図１６（ｂ）に示すように、入力装置５２ａ、受信装置５２ｂの大きさに対して小さい凹凸であれば、走行式非破壊試験装置５１を問題なく走行させることができる。 As shown in FIG. 16( a ), the input device 52 a and the receiving device 52 b can cause the traveling-type nondestructive testing device 51 to travel without problems if the inspection target is a flat surface. Further, as shown in FIG. 16B, if the unevenness is small with respect to the sizes of the input device 52a and the receiving device 52b, the traveling-type nondestructive testing device 51 can be run without problems.

しかし、図１６（ｃ）に示すように、コンクリート構造物Ｃなどの試験対象物に大きな欠け等の窪みがあると、入力装置５２ａ、受信装置５２ｂが、これらの窪みに落ち込み、窪みからの脱出時に窪みの壁面に衝突することがある。また、図１８に示すように、コンクリート構造物Ｃに大きな溝があると、ここに装置本体５３の入力装置５２ａ、受信装置５２ｂが衝突することがある。例えば、トンネルではコンクリートを打設して施工する際の打ち継ぎ目部が段差になりやすい。このような窪み等に入力装置５２ａ、受信装置５２ｂが衝突すると、回避をしない場合、装置を破損する恐れがある。またそれを避けるために、あらかじめ窪み等の位置を把握し、その個所では入力装置５２ａ、受信装置５２ｂを引き上げる回避を行う対策も考えられるが、回避動作に時間を要するという問題を有していた。
また、欠け等の周辺に検出したい内部空隙が存在する場合が多いが、窪み等を回避してしまうとその周辺にある本来検出したい内部空隙を見逃す可能性が多くなり、検査自体の精度が落ちる。 However, as shown in FIG. 16( c ), if the test object such as the concrete structure C has a dent such as a large chip, the input device 52 a and the receiving device 52 b fall into these dents and escape from the dent. Sometimes it collides with the wall of the depression. Further, as shown in FIG. 18, if the concrete structure C has a large groove, the input device 52a and the receiving device 52b of the device main body 53 may collide there. For example, in a tunnel, the joint portion when pouring and constructing concrete tends to be a step. If the input device 52a and the receiving device 52b collide with such a recess or the like, the device may be damaged if it is not avoided. In order to avoid this, it is possible to grasp the position of the depression or the like in advance and avoid the pulling up of the input device 52a and the receiving device 52b at that position, but there is a problem that the avoiding operation takes time. ..
In addition, there are often internal voids that you want to detect, such as chips, but if you avoid pits, you will miss the internal voids that you originally want to detect, and the accuracy of the inspection itself will drop. ..

入力装置・受信装置のセンサ部とは別のセンサを用いて、コンクリート構造物表面の凹凸状態を検出し、この凹凸部分から入力装置・受信装置（センサ部）を回避させて走行させる非破壊試験装置では、その凹凸部分の検出に時間・労力がかかりやすかった。また、凹凸部分、即ち回避箇所周辺の検査ができず検査可能面積が狭くなるという問題を有していた。 A non-destructive test in which a sensor other than the sensor unit of the input device/receiver is used to detect the uneven state of the surface of the concrete structure, and the input device/receiver (sensor unit) is avoided from this uneven portion for running. In the device, it was easy to take time and labor to detect the uneven portion. Further, there is a problem that the area around the uneven portion, that is, the area around the avoidance portion cannot be inspected, and the inspectable area becomes small.

本発明は、かかる問題点を解決するために創案されたものである。すなわち、本発明の目的は、入力装置、受信装置等の試験装置に防護部材を装着することで、コンクリート等の構造物に生じた欠陥個所（変状部）について接触式の非破壊試験により点検する際に、入力装置、受信装置が構造物表面の窪み等の回避動作を要することがないため短時間で、かつ窪み等からの脱出時の衝突を防止することで装置を破損することなく、非破壊試験を実施できる防護部材付き接触式非破壊試験装置及びその非破壊試験方法を提供することにある。 The present invention was created to solve such problems. That is, an object of the present invention is to install a protective member on a test device such as an input device and a receiving device to inspect a defective portion (deformation portion) generated in a structure such as concrete by a contact-type nondestructive test. When doing so, the input device, the receiving device does not need a avoidance operation such as depressions on the structure surface in a short time, and without damaging the device by preventing a collision at the time of escape from the depressions, It is an object of the present invention to provide a contact-type nondestructive testing device with a protective member capable of performing a nondestructive test and a nondestructive testing method thereof.

本発明の非破壊試験装置は、コンクリート等の構造物（Ｃ）と常に接触しながら該構造物（Ｃ）内部の欠陥を検査する接触式非破壊試験装置（１）であって、
前記構造物（Ｃ）内に、昇降機構（１３）と押圧機構（１４）により所定の押圧力で該構造物（Ｃ）表面と一定の間隔を保ちながら、断続的に離隔保持用車輪（１０）が接触して弾性波を入力する入力装置（６）と、該構造物（Ｃ）で伝播した弾性波を検査用車輪（１１）が接触して受信する受信装置（７）などの試験装置（２）と、
前記試験装置（２）を移動させる走行手段（４）を有する装置本体（３）と、
前記試験装置（２）を防護するために、該試験装置（２）に設けられた、前記構造物（Ｃ）表面の凹凸部、段差に接する傾斜部（１５ａ）を有する防護部材（１５）と、を備え、
前記防護部材（１５）は、その傾斜部（１５ａ）の先端（１５ｂ）が前記試験装置（２）の離隔保持用車輪（１０）の車軸（１０ａ）、又は検査用車輪（１１）の車軸（１１ａ）中心より先に位置し、前記装置本体（３）の走行方向の力が該車軸（１０ａ、１１ａ）に直接作用することを防ぐように構成した、ことを特徴とする。
なお、検査用車輪（１１）を離隔保持用車輪（１０）と共用し、共用した車輪を介して構造物に弾性波を入力すると共に、該構造物（Ｃ）に伝搬した弾性波を受信することにより、前記入力装置（６）と受信装置（７）を一体化することも可能であるが、以下、入力装置（６）と受信装置（７）とを別構造とした場合の構成例を示す。 The non-destructive testing device of the present invention is a contact-type non-destructive testing device (1) for inspecting a defect inside the structure (C) while constantly contacting the structure (C) such as concrete.
In the structure (C), the lifting/lowering mechanism (13) and the pressing mechanism (14) intermittently maintain a constant distance from the surface of the structure (C) with a predetermined pressing force, and intermittently maintain the separation wheel (10). ) Is in contact with the input device to input an elastic wave, and a testing device such as a receiving device (7) in which the inspection wheel (11) is in contact with and receives the elastic wave propagated in the structure (C). (2),
A device body (3) having a traveling means (4) for moving the test device (2);
In order to protect the test device (2), a protection member (15) provided on the test device (2), having an uneven portion on the surface of the structure (C) and an inclined portion (15a) contacting a step, ,,
The tip (15b) of the sloped portion (15a) of the protective member (15) is the axle (10a) of the wheel (10) for keeping the separation of the test apparatus (2) or the axle (10) of the wheel (11) for inspection (11). 11a) is located ahead of the center, and is configured to prevent a force in the traveling direction of the device body (3) from directly acting on the axles (10a, 11a).
The inspection wheel (11) is also used as the separation holding wheel (10), the elastic wave is input to the structure through the shared wheel, and the elastic wave propagated to the structure (C) is received. As a result, the input device (6) and the receiving device (7) can be integrated, but in the following, a configuration example in which the input device (6) and the receiving device (7) have different structures Show.

前記防護部材（１５，１６）は、前記防護部材（１５）は前記非破壊試験装置（１）の走行方向側に設け、更に走行方向の反対側にも防護部材（１６）を設けたものである。 The protection members (15, 16) are provided such that the protection member (15) is provided on the running direction side of the nondestructive testing device (1) and further the protection member (16) is provided on the opposite side to the running direction. is there.

前記防護部材（１５，１６）は、
前記入力装置（６）又は受信装置（７）などの試験装置（２）を支持する略長方形状の支持板（１２）に、該試験装置（２）の先端側から、該支持板（１２）側へ傾斜する傾斜部（１５ａ，１６ａ）が形成されたものであり、前記防護部材（１５，１６）の傾斜部（１５ａ，１６ａ）の先端（１５ｂ，１６ｂ）が、前記試験装置（２）の離隔保持用車輪（１０）の車軸（１０ａ）、又は検査用車輪（１１）の車軸（１１ａ）中心より先に位置し、前記装置本体（３）の走行方向の力が該車軸（１０ａ、１１ａ）に直接作用することを防ぐように構成したものである。 The protection member (15, 16) is
A support plate (12) having a substantially rectangular shape for supporting a test device (2) such as the input device (6) or the receiving device (7) is attached to the support plate (12) from the tip side of the test device (2). An inclined portion (15a, 16a) inclined to the side is formed, and the tip (15b, 16b) of the inclined portion (15a, 16a) of the protection member (15, 16) is the test device (2). Of the axle (10a) of the separation holding wheel (10) or the center of the axle (11a) of the inspection wheel (11), and the force in the traveling direction of the device body (3) is applied to the axle (10a, 11a) is configured to be prevented from directly acting.

前記入力装置（６）と受信装置（７）は、前記装置本体（３）の走行方向に並ぶように隣接配置され、
前記入力装置（６）に第１防護部材（１５）を、前記受信装置（７）に第２防護部材（１６）をそれぞれ装着し、
前記第１防護部材（１５）の傾斜部（１５ａ）の反対側に、先端位置に先端側爪部（２１）を、後端位置に後端側爪部（２２）を前記第２防護部材（１６）側へ突出するように、該第１防護部材（１５）の昇降方向に対して直角方向へずらしてそれぞれ設け、
前記第２防護部材（１６）の傾斜部（１６ａ）の反対側に、後端位置に後端側爪部（２３）を、先端位置に先端側爪部（２４）を前記第１防護部材（１５）側へ突出するように、該第２防護部材（１６）の昇降方向に対して直角方向へずらしてそれぞれ設け、
前記第１防護部材（１５）の先端側爪部（２１）が、第２防護部材（１６）の後端側爪部（２３）に当たることで、該第１防護部材（１５）と共に該第２防護部材（１６）を後端側へ移動させ、
前記第１防護部材（１５）の後端側爪部（２２）が、第２防護部材（１６）の先端側爪部（２４）に当たることで、該第１防護部材（１５）と共に該第２防護部材（１６）を先端側へ移動させ、
前記第２防護部材（１６）の先端側爪部（２４）が、該第１防護部材（１５）の後端側爪部（２２）に当たることで、該第２防護部材（１６）と共に該第１防護部材（１５）を後端側へ移動させ、
前記第２防護部材（１６）の後端側爪部（２３）が、該第１防護部材（１５）の先端側爪部（２１）に当たることで、該第２防護部材（１６）と共に該第１防護部材（１５）を先端側へ移動させ得るように構成することができる。 The input device (6) and the receiving device (7) are adjacently arranged so as to be lined up in the traveling direction of the device body (3),
A first protective member (15) is attached to the input device (6), and a second protective member (16) is attached to the receiving device (7),
On the opposite side of the inclined part (15a) of the first protection member (15), the front end side claw part (21) is located at the front end position and the rear end side claw part (22) is located at the rear end position. 16) so as to project toward the 16) side, the first protection member (15) is provided in such a manner that it is shifted in a direction perpendicular to the vertical direction,
On the opposite side of the inclined portion (16a) of the second protection member (16), the rear end side claw portion (23) is located at the rear end position, and the front end side claw portion (24) is located at the front end position. 15) so as to project toward the 15) side, the second protective member (16) is provided in such a manner that it is shifted in a direction perpendicular to the vertical direction,
The tip side claw portion (21) of the first protection member (15) hits the rear side claw portion (23) of the second protection member (16), so that the second protection member (15) and the second protection member (15) Move the protection member (16) to the rear end side,
The rear end side claw portion (22) of the first protection member (15) abuts on the front side claw portion (24) of the second protection member (16), so that the second protection member (15) and the second protection member (15). Move the protection member (16) to the tip side,
The tip side claw portion (24) of the second protection member (16) abuts the rear side claw portion (22) of the first protection member (15) so that the second protection member (16) and the 1 Move the protection member (15) to the rear end side,
The rear end side claw portion (23) of the second protection member (16) abuts on the front end side claw portion (21) of the first protection member (15), so that the second protection member (16) and the second protection member (16). 1 The protection member (15) can be configured to be movable to the tip side.

防護部材（３１，３２）は、
前記入力装置（６）又は受信装置（７）を支持する前記支持板（１２）に、該入力装置（６）又は受信装置（７）の先端側から、該入力装置（６）又は受信装置（７）の該支持板（１２）までを防護する傾斜面（３１ａ，３２ａ）を有するブロック状の緩衝材を取り付けたものにすることができる。
防護部材（４１，４２）は、
前記入力装置（６）又は受信装置（７）を支持する前記支持板（１２）に、該入力装置（６）又は受信装置（７）の先端部近傍へ延びる板ばね状のバンパーを取り付けたものにすることができる。 The protective member (31, 32) is
On the support plate (12) supporting the input device (6) or the receiving device (7), from the tip side of the input device (6) or the receiving device (7), the input device (6) or the receiving device ( A block-shaped cushioning material having inclined surfaces (31a, 32a) for protecting up to the support plate (12) in 7) can be attached.
The protective member (41, 42) is
A support plate (12) that supports the input device (6) or the receiving device (7) is provided with a leaf spring bumper extending near the tip of the input device (6) or the receiving device (7). Can be

本発明の非破壊試験方法は、コンクリート等の構造物（Ｃ）と常に接触しながら構造物（Ｃ）内部の欠陥について非破壊試験装置（１）を用いて検査する接触式非破壊試験方法であって、
非破壊試験を実施する入力装置（６）と受信装置（７）とから成る試験装置（２）を搭載した装置本体（３）を移動させ、
前記構造物（Ｃ）内に、昇降機構（１３）と押圧機構（１４）により所定の押圧力で該構造物（Ｃ）表面と、離隔保持用車輪（１０）により一定の間隔を保ちながら断続的に入力装置（６）から弾性波を入力し、該構造物（Ｃ）で伝播した弾性波について検査用車輪（１１）を接触させて受信装置（７）で受信して非破壊試験を実施すると共に、
接触走行しながら非破壊試験をする際に、前記試験装置（２）を防護するために、該試験装置（２）に設けられた防護部材（１５，１６）が、構造物（Ｃ）表面の凹凸部、段差に接したときは、該当箇所の構造物（Ｃ）内部にも異常部があると判断する、ことを特徴とする。
前記防護部材（１５，１６）が、構造物（Ｃ）表面の凹凸部、段差に接したときは、前記非破壊試験装置（１）を停止、又は走行速度を減速することなく接触非破壊試験を実施する。 The non-destructive test method of the present invention is a contact-type non-destructive test method for inspecting defects inside the structure (C) using a non-destructive test apparatus (1) while constantly contacting the structure (C) such as concrete. There
A device body (3) equipped with a test device (2) comprising an input device (6) and a receiving device (7) for carrying out a non-destructive test is moved,
In the structure (C), the lifting mechanism (13) and the pressing mechanism (14) intermittently connect the surface of the structure (C) to the surface of the structure (C) at a predetermined pressing force and the separation holding wheel (10) at a constant interval. The elastic wave is input from the input device (6), and the inspection wheel (11) is brought into contact with the elastic wave propagated in the structure (C) and is received by the receiving device (7) to perform a nondestructive test. Along with
A protective member (15, 16) provided on the test device (2) is provided on the surface of the structure (C) in order to protect the test device (2) when performing a nondestructive test while traveling in contact. It is characterized in that, when it comes into contact with the uneven portion or the step, it is judged that there is an abnormal portion inside the structure (C) at the relevant portion.
When the protective member (15, 16) contacts an uneven portion or a step on the surface of the structure (C), the contact nondestructive test without stopping the nondestructive testing device (1) or reducing the traveling speed. Carry out.

上記構成の防護部材付き非破壊試験装置（１）では、検査対象物のコンクリート等の構造物（Ｃ）表面の欠け等の窪み部において、弾性波をこの構造物（Ｃ）内に入力する際に、試験装置（２）の入力装置（６）の先端側と、受信装置（７）の先端側を防護する防護部材（１５，１６）がそれぞれ備えられているので、試験装置２（入力装置（６）、受信装置（７））が窪み等に落ち込んだ後、走行方向の衝撃力が加わり装置本体（３）が破壊されることを回避しつつ、検査を継続させることができる。入力装置（６）（打撃ハンマ（８））、受信装置（７）（加速度センサ（９））が車輪形状になっている場合、車軸（１０ａ，１１ａ）に近い位置で走行方向の衝撃力が加わると部材破壊につながるため、防護部材（１５，１６）の先端（１５ｂ、１６ｂ）が車軸（１０ａ，１１ａ）より先部に窪み等を当てて衝撃力を逃がす。即ち、この防護部材（１５，１６）には、傾斜部(１５ａ，１６ａ)を有し、さらに防護部材（１５、１６）の先端（１５ｂ、１６ｂ）は、入力装置（６）の離隔保持用車輪（１０）、受信装置（７）の検査用車輪（１１）の車軸（１０ａ，１１ａ）中心より先端側に位置するため、段差部、溝の開口縁が接触する場合、傾斜部（１５ａ，１６ａ）に最初に接触する。 In the non-destructive testing device (1) with a protective member having the above-described structure, when an elastic wave is input into the structure (C) in a dent portion such as a chip on the surface of the structure (C) such as concrete to be inspected. In addition, since the protective member (15, 16) for protecting the tip side of the input device (6) of the test apparatus (2) and the tip side of the receiving apparatus (7) is provided respectively, the test apparatus 2 (input apparatus (6) The inspection can be continued while avoiding damage to the device body (3) due to impact force in the traveling direction after the receiving device (7) has fallen into the depression or the like. When the input device (6) (striking hammer (8)) and the receiving device (7) (acceleration sensor (9)) are wheel-shaped, impact force in the traveling direction is generated at a position close to the axles (10a, 11a). If added, it will lead to destruction of the member, so the tip end (15b, 16b) of the protective member (15, 16) hits a recess or the like in front of the axle (10a, 11a) to release the impact force. That is, the protective member (15, 16) has an inclined portion (15a, 16a), and the tips (15b, 16b) of the protective member (15, 16) are for holding the input device (6) at a distance. Since the wheel (10) and the wheel for inspection (11) of the receiving device (7) are located closer to the tip end than the center of the axle (10a, 11a), when the step portion and the opening edge of the groove are in contact with each other, the inclined portion (15a, Contact 16a) first.

これら傾斜部（１５ａ，１６ａ）は試験装置（２）（入力装置（６）、受信装置（７））が進行するにつれ構造物（Ｃ）側に接近する。段差部、溝の開口縁がこれら傾斜部（１５ａ，１６ａ）に接触したことによる走行方向の外力（Ｘ）は、傾斜部（１５ａ，１６ａ）に沿う成分の分力（Ｙ）と傾斜部（１５ａ，１６ａ）に直交する成分の分力（Ｚ）に分解され、傾斜部（１５ａ，１６ａ）に直交する成分の分力（Ｚ）は、さらに試験装置（２）の入力装置（６）、受信装置（７）を走行方向に押す成分の分力（Ｎ）と、垂直方向に押し戻す成分の分力（Ｍ）に分解される。分力（N）はもとの外力（Ｘ）より十分小さく、試験装置（２）の入力装置（６）、受信装置（７）は外力（Ｘ）に十分耐えうるように設計可能である。また、試験装置（２）の入力装置（６）又は受信装置（７）を支持する略長方形状の支持板（１２）は昇降機構（１３）と押圧機構（１４）を介して構造物（Ｃ）に押し付けられているため、分力（Ｍ）が押圧機構（１４）の押し当て力を上回ることにより、入力装置（６）、受信装置（７）は電気的な制御等を要することなく物理的に引き込む状態となり構造物（Ｃ）表面の段差部、溝の開口縁との衝突による試験装置（２）の破損を回避する。 These inclined portions (15a, 16a) approach the structure (C) side as the test device (2) (input device (6), receiving device (7)) advances. The external force (X) in the traveling direction due to the contact between the stepped portion and the opening edge of the groove with these inclined portions (15a, 16a) is the component force (Y) of the component along the inclined portion (15a, 16a) and the inclined portion ( 15a, 16a) is decomposed into the component force (Z) of the component orthogonal to 15a, 16a), and the component force (Z) of the component orthogonal to the inclined portion (15a, 16a) is further input device (6) of the test device (2), It is decomposed into a component force (N) of a component that pushes the receiving device (7) in the traveling direction and a component force (M) of a component that pushes the receiving device (7) back in the vertical direction. The component force (N) is sufficiently smaller than the original external force (X), and the input device (6) and the receiving device (7) of the test apparatus (2) can be designed to sufficiently withstand the external force (X). In addition, the substantially rectangular support plate (12) that supports the input device (6) or the receiving device (7) of the test device (2) has a structure (C) via an elevating mechanism (13) and a pressing mechanism (14). ), the component force (M) exceeds the pressing force of the pressing mechanism (14), so that the input device (6) and the receiving device (7) do not need physical control or the like to physically operate. It avoids damage to the test apparatus (2) due to collision with the stepped portion on the surface of the structure (C) and the opening edge of the groove.

また、防護部材（１５，１６）がない場合は、窪み箇所により試験装置（２）が破壊されるリスクがあるため、検査箇所からあらかじめ除外することが考えられる。その場合、検査除外箇所にて試験装置（２）の回避動作が生じる。しかし、本発明は防護部材（１５，１６）があることで、回避動作が不要となり、回避時間を要することもなく、効率的に検査を継続させることができる。また、欠け等の窪み部周辺にコンクリート内部の空隙が多いことから、欠け等の窪み部を回避せずに検査できることで、周辺の空隙部を検出することができ、検査の効率だけでなく、精度の高い非破壊検査が可能である。 Further, if there is no protective member (15, 16), there is a risk that the test device (2) will be destroyed by the recessed portion, so it is possible to exclude it from the inspection location in advance. In that case, the avoidance operation of the test apparatus (2) occurs at the inspection excluded portion. However, in the present invention, since the protection member (15, 16) is provided, the avoidance operation is unnecessary, and the avoidance time is not required, and the inspection can be efficiently continued. In addition, since there are many voids inside the concrete around the dents such as chips, it is possible to detect the cavities such as nicks without avoiding, and it is possible to detect the voids in the vicinity, and not only the efficiency of the inspection, Highly accurate non-destructive inspection is possible.

第１防護部材（１５）と第２防護部材（１６）を連動する機能を設けたものでは、第１防護部材（１５）の動作に応じて、第２防護部材（１６）が連動するようになっているので、第１防護部材（１５）の傾斜部(１５ａ)に段差部、溝の開口縁が当たる際に、第２防護部材（１６）が連動して動作するようになっている。そこで、入力装置（６）が引っ込む状態のときは、受信装置（７）も引っ込む状態になり、窪み部、トンネルの打ち継ぎ目部の開口部との衝突を回避することができる。また、第１防護部材（１５）と第２防護部材（１６）のどちら側から窪み部にあたってもそれぞれが連動して動作することにより、検査装置の走査方向を制限することなく検査が可能である。 In the case where the function of interlocking the first protective member (15) and the second protective member (16) is provided, the second protective member (16) is interlocked according to the operation of the first protective member (15). Therefore, when the stepped portion or the opening edge of the groove hits the inclined portion (15a) of the first protective member (15), the second protective member (16) operates in conjunction with each other. Therefore, when the input device (6) is in the retracted state, the receiving device (7) is also in the retracted state, so that it is possible to avoid collision with the recessed portion and the opening of the joint portion of the tunnel. Further, by operating the first protection member (15) and the second protection member (16) in association with each other in contact with the depression, the inspection can be performed without limiting the scanning direction of the inspection device. ..

同様に、第２防護部材（１６）の傾斜部(１６ａ)に段差部、溝の開口縁が当たる際に、第１防護部材（１５）がこの第２防護部材（１６）と連動して動作するようになる。これにより、第１防護部材（１５）又は第２防護部材（１６）が大きく進退するときでも、隣接する第２防護部材（１６）又は第１防護部材（１５）も連動するため、構造物（Ｃ）の表面の大きな段差があっても入力装置（６）、受信装置（７）が衝撃を受けたり、破損することを防止することができる。 Similarly, when the stepped portion or the opening edge of the groove hits the inclined portion (16a) of the second protective member (16), the first protective member (15) operates in cooperation with the second protective member (16). Come to do. As a result, even when the first protective member (15) or the second protective member (16) reciprocates significantly, the adjacent second protective member (16) or the first protective member (15) also works together, so that the structure ( Even if there is a large step on the surface of C), it is possible to prevent the input device (6) and the receiving device (7) from being impacted or damaged.

防護部材（１５，１６）の構成は、金属板を曲折した構成のものに限定されず、傾斜面（３１ａ，３２ａ）を有するブロック状の緩衝材から成る防護部材（３１，３２）又は板ばね状のバンパーから成る防護部材（４１，４２）でも入力装置（６）、受信装置（７）を防護することができる。 The structure of the protective member (15, 16) is not limited to a bent metal plate, and the protective member (31, 32) or leaf spring is made of a block-shaped cushioning material having inclined surfaces (31a, 32a). The input device (6) and the receiving device (7) can also be protected by the protective member (41, 42) formed of a bumper.

上記構成の非破壊試験方法では、接触走行しながら非破壊試験をする際に、試験装置（２）に設けられた防護部材（１５，１６）が、構造物（Ｃ）表面の凹凸部、段差に接したときは、該当箇所の構造物（Ｃ）について、より精緻な試験を実施することができる。
更に、防護部材（１５，１６）が、構造物（Ｃ）表面の凹凸部、段差に接したときは、非破壊試験装置（１）を停止、又は走行速度を減速して接触非破壊試験を詳細に実施する契機となる。 In the nondestructive testing method having the above configuration, when performing the nondestructive test while traveling in contact, the protective member (15, 16) provided in the test device (2) is provided with the uneven portion and the step on the surface of the structure (C). When contacted with, the structure (C) at the relevant location can be subjected to a more elaborate test.
Further, when the protective member (15, 16) comes into contact with the uneven portion or step on the surface of the structure (C), the nondestructive testing device (1) is stopped or the traveling speed is reduced to perform the contact nondestructive test. It will be an opportunity to implement in detail.

実施例１の防護部材付き非破壊試験装置を示す正面図である。1 is a front view showing a nondestructive testing device with a protective member of Example 1. FIG. 実施例１の防護部材付き非破壊試験装置の保護カバーを外した状態を示す正面図である。FIG. 3 is a front view showing a state in which the protective cover of the nondestructive testing device with a protective member of Example 1 is removed. 防護部材を示す拡大正面図である。It is an enlarged front view showing a protection member. 防護部材を示す一部切欠いた拡大正面図である。It is an enlarged front view which notched a part which shows a protection member. 防護部材の防護機能を説明する拡大概略説明図である。It is an expansion schematic explanatory drawing explaining the protection function of a protection member. 防護部材の防護機能を説明する比較図であり、（ａ）は防護部材を取り付ける前の状態を示す車輪の拡大正面図、（ｂ）は防護部材を取り付け、拡大した車輪の仮想線を示す拡大正面図である。It is a comparative view explaining the protection function of a protection member, (a) is an enlarged front view of the wheel which shows the state before attaching a protection member, (b) is an enlargement which shows the virtual line of the wheel which attached the protection member and expanded. It is a front view. 本発明の非破壊試験装置の動作状態を示す拡大正面図であり、（ａ）はコンクリート構造物が平坦な場合、（ｂ）はコンクリート構造物表面に小さな段差、溝がある場合である。It is an enlarged front view which shows the operating state of the nondestructive testing device of this invention, (a) is a case where a concrete structure is flat, (b) is a case where a small level|step difference and a groove|channel are on the concrete structure surface. 本発明の非破壊試験装置の動作状態を示す拡大正面図であり、（ｃ）はコンクリート構造物表面に大きな段差、溝がある場合、（ｄ）はコンクリート構造物表面に更に大きな段差、溝がある場合である。It is an enlarged front view which shows the operating state of the nondestructive testing apparatus of this invention, (c) has a large level|step difference and a groove|channel on a concrete structure surface, (d) shows a larger level|step difference and a groove|channel on a concrete structure surface. In some cases. 実施例２の相互に連動動作する機能を有する防護部材を示し、（ａ）は正面図、（ｂ）は背面図、（ｃ）は底面図、（ｄ）は連動動作機能の概略説明斜視図である。The protective member which has a function which mutually interlocks of Example 2 is shown, (a) is a front view, (b) is a rear view, (c) is a bottom view, (d) is a schematic explanatory perspective view of an interlocking function. Is. 連動動作機構の動作状態を示す拡大正面図であり、（ａ）は第１防護部材と共に第２防護部材が後端側へ移動する状態、（ｂ）は第１防護部材と共に第２防護部材を先端側へ移動する状態である。It is an enlarged front view which shows the operation state of an interlocking movement mechanism, (a) is a state which a 2nd protection member moves to a rear end side with a 1st protection member, (b) shows a 2nd protection member with a 1st protection member. It is in the state of moving to the tip side. 連動動作機構の動作状態を示す拡大正面図であり、（ｃ）は第２防護部材と共に第１防護部材が後端側へ移動する状態、（ｄ）は第２防護部材と共に第１防護部材を先端側（図示上は下側）へ移動させる状態である。It is an enlarged front view which shows the operation state of an interlocking movement mechanism, (c) is a state which a 1st protection member moves to a rear end side with a 2nd protection member, (d) shows a 1st protection member with a 2nd protection member. It is in a state of being moved to the tip side (downward in the figure). 実施例３の片側のみに設けた防護部材付き非破壊試験装置を示す正面図である。FIG. 8 is a front view showing a nondestructive testing apparatus with a protective member provided on only one side of Example 3. 実施例３の片側のみに設けた防護部材付き非破壊試験装置の保護カバーを外した状態を示す正面図である。FIG. 7 is a front view showing a state in which a protective cover of a nondestructive testing apparatus with a protective member provided on only one side of Example 3 is removed. 変形例１の緩衝材から成る防護部材を示す正面図である。FIG. 8 is a front view showing a protective member made of a cushioning material of Modification 1. 変形例２のバンパー式の防護部材を示す正面図である。It is a front view which shows the bumper type protection member of the modified example 2. 従来の走行式の非破壊試験装置を用いて試験する状態を示す拡大正面図であり、（ａ）は平坦な構造物、（ｂ）は凹みがある構造物、（ｃ）は凸部がある構造物である。It is an enlarged front view which shows the state tested using the conventional traveling-type nondestructive testing apparatus, (a) is a flat structure, (b) is a structure with a dent, (c) is a convex part. It is a structure. トンネルについて従来の走行式非破壊試験装置で点検する状態を示す説明図である。It is explanatory drawing which shows the state which inspects a tunnel with the conventional traveling nondestructive testing apparatus. 従来の走行式の非破壊試験装置が構造物における大きな溝に衝突した状態を示す拡大正面図である。It is an enlarged front view showing the state where the conventional run-type nondestructive testing device collided with the large groove in the structure.

本発明は、コンクリート等の構造物と常に接触しながら構造物内部の欠陥を検査する接触式非破壊試験装置であり、構造物内に、一定の間隔を保ちながら断続的に検査用車輪が接触し、弾性波を入力する入力装置、構造物で伝播した弾性波を受信する受信装置などの試験装置と、この試験装置を防護するために、試験装置に設けられた、構造物表面の凹凸部、段差に接する傾斜部を有する防護部材と、を備えた装置である。 The present invention is a contact-type non-destructive testing device for inspecting defects inside a structure while constantly contacting the structure such as concrete, and the inspection wheels come into contact with the structure intermittently while maintaining a constant interval. However, an input device for inputting elastic waves, a test device such as a receiving device for receiving elastic waves propagated by a structure, and a concavo-convex portion on the structure surface provided in the test device to protect the test device. And a protection member having an inclined portion in contact with the step.

以下、本発明の実施の形態を図面を参照して説明する。
＜走行式の非破壊試験装置の構成＞
図１は実施例１の防護部材付き非破壊試験装置を示す正面図である。図２は実施例１の防護部材付き非破壊試験装置の保護カバーを外した状態を示す正面図である。図示例では試験装置の弾性波の入力方向、受信方向（入力装置と受信装置）が下向きであるが、これは一例であって、図１７に示したように、横向き、上向きと何れの方向にも向けて試験する装置である。
実施例１の走行式の防護部材付き非破壊試験装置１は、コンクリート等の構造物Ｃの壁面とその内部を試験する試験装置２又は壁面で作業する作業装置などを有する装置本体３と、走行手段となる走行車輪４等を備えた装置である。実施例１の非破壊試験装置１は、後述する防護部材１５，１６を、走行する前後方向に取り付けたものである。試験装置２は保護カバー５により覆われた状態になっている。なお、これらの実施例では、コンクリート製の構造物Ｃについて説明しているが、本発明の検査対象物はこのコンクリート製の構造物Ｃに限定されないことは勿論である。鋼橋の金属製構造物についても検査対象物となる。 Embodiments of the present invention will be described below with reference to the drawings.
<Structure of running non-destructive testing device>
FIG. 1 is a front view showing a nondestructive testing apparatus with a protective member of Example 1. FIG. 2 is a front view showing a state in which the protective cover of the nondestructive testing apparatus with a protective member of Example 1 is removed. In the illustrated example, the input direction and the receiving direction (input device and receiving device) of the elastic wave of the test device are downward, but this is an example, and as shown in FIG. It is also a device for testing.
The traveling-type nondestructive testing device with a protective member 1 of Example 1 is a device main body 3 having a wall surface of a structure C such as concrete and a test device 2 for testing the inside thereof, or a working device for working on the wall surface, and a traveling body. The device is equipped with traveling wheels 4 and the like serving as means. The non-destructive testing apparatus 1 of Example 1 is one in which protective members 15 and 16 to be described later are attached in the running front-rear direction. The test apparatus 2 is covered with the protective cover 5. In addition, in these Examples, the concrete structure C is described, but it goes without saying that the inspection object of the present invention is not limited to this concrete structure C. Metal structures of steel bridges will also be inspected.

走行車輪４は、いわゆる車輪である。走行車輪４は、モータ等の駆動機構に連結されて自走する構成でもよい。または走行車輪４に駆動機構を具備せず、装置本体３を支持部材で支持する構成でもよい。この支持部材を地上で走行する車両に取り付け、この走行車輪４と共に防護部材付き非破壊試験装置１を走行させる構成にすることも可能である（図１７参照）。
なお、走行手段としては、図示例の走行車輪４に限定されない。これに代えてキャタピラを用いることができる。更に、図示していないが空気を吸引する吸着型の装置を用いるなど、種々の走行手段を用いることができる。 The traveling wheels 4 are so-called wheels. The traveling wheel 4 may be configured to be self-propelled by being connected to a drive mechanism such as a motor. Alternatively, the traveling wheels 4 may not be provided with a drive mechanism, and the apparatus body 3 may be supported by a supporting member. It is also possible to attach this support member to a vehicle traveling on the ground and make the non-destructive testing device with a protective member 1 travel together with this traveling wheel 4 (see FIG. 17).
The traveling means is not limited to the traveling wheels 4 in the illustrated example. Alternatively, a caterpillar can be used. Further, although not shown, various traveling means can be used, such as using an adsorption type device for sucking air.

装置本体３は、その内部又は外部に試験装置２（入力装置６と受信装置７）、このような試験装置２以外に作業装置を複数台収納又は保持することが可能な略直方体形状の筐体である。図示例では、複数組の試験装置２（入力装置６と受信装置７）を有する状態を示し、周囲に４組の走行車輪４を備えた構成を示している。この試験装置２（入力装置６と受信装置７）の組数、走行車輪４の個数はこの数に限定されない。検査の目的、場所に応じて試験装置の組数、走行車輪４の個数も異なるので、装置本体３の形状も変わるため、装置本体３はこの略直方体形状に限定されない。
また、装置本体３内には、試験装置２（入力装置６と受信装置７）のみではなく、この試験装置２に必要な周辺機器、更に走行車輪４の動作を制御するマイコンなどを収納することが可能である。 The apparatus main body 3 has a substantially rectangular parallelepiped casing capable of accommodating or holding a plurality of test devices 2 (an input device 6 and a receiving device 7) inside or outside the test device 2 and working devices other than the test device 2. Is. In the illustrated example, a state having a plurality of sets of test devices 2 (input device 6 and receiving device 7) is shown, and a configuration in which four sets of traveling wheels 4 are provided in the periphery is shown. The number of sets of the test device 2 (input device 6 and receiving device 7) and the number of traveling wheels 4 are not limited to this number. Since the number of sets of test devices and the number of traveling wheels 4 differ depending on the purpose and location of the inspection, the shape of the device body 3 also changes. Therefore, the device body 3 is not limited to this substantially rectangular parallelepiped shape.
Further, not only the test device 2 (input device 6 and receiving device 7) but also peripheral devices necessary for the test device 2 and a microcomputer for controlling the operation of the traveling wheels 4 are housed in the device body 3. Is possible.

＜試験装置（入力装置と受信装置）の構成＞
図示する試験装置２は、図２の保護カバーを外した状態に示すように、例えば入力装置６と受信装置７とから構成されている。入力装置６として打撃ハンマ８が用いられ、受信装置７として加速度センサ９が用いられたものである。打撃ハンマ８には、コンクリート等の構造物Ｃと常に接触しながら走行試験を円滑に実施できるように、離隔保持用車輪１０が備えられたものである。なお、入力装置６として打撃ハンマ８を一例にあげたが、超音波発信装置などを用いることができる。また、受信装置７として加速度センサ９を一例にあげたが、マイク等の音声、振動を受信する装置などに代えることが可能である。 <Configuration of test device (input device and receiving device)>
The illustrated test apparatus 2 is composed of, for example, an input device 6 and a receiving device 7, as shown in the state where the protective cover of FIG. 2 is removed. A batting hammer 8 is used as the input device 6, and an acceleration sensor 9 is used as the receiving device 7. The striking hammer 8 is provided with wheels 10 for keeping the distance apart so that the running test can be smoothly carried out while always contacting the structure C such as concrete. The hitting hammer 8 is given as an example of the input device 6, but an ultrasonic wave transmitting device or the like may be used. Although the acceleration sensor 9 is given as an example of the receiving device 7, it may be replaced with a device such as a microphone for receiving voice and vibration.

この打撃ハンマ８の打撃により検査対象物の構造物Ｃ内で伝播した弾性波を、受信装置７が受信する。この受信した弾性波について、反射エコーや波の周波数、位相などを分析し、構造物Ｃ内部の欠陥、背面空洞の有無、その欠陥の位置までの距離を測定する。受信装置７（加速度センサ９）の先端には走行試験を円滑に実施できるように、検査用車輪１１が備えられたものである。 The receiving device 7 receives the elastic wave propagated in the structure C of the inspection object by the impact of the impact hammer 8. With respect to the received elastic wave, the reflected echo and the frequency and phase of the wave are analyzed, and the defect inside the structure C, the presence or absence of the back cavity, and the distance to the position of the defect are measured. An inspection wheel 11 is provided at the tip of the receiving device 7 (acceleration sensor 9) so that a running test can be carried out smoothly.

入力装置６（打撃ハンマ８）は、略長方形状の支持板１２の一側に取り付けられている。この支持板１２の他側に、これを進退自在に支持する昇降機構１３の一端が取り付けられている。この昇降機構１３の他端は装置本体３に固定されている。昇降機構１３は、全体が二重管に構造を有し、伸縮自在になる部材であり、この二重管構造により伸縮自在になる。 The input device 6 (striking hammer 8) is attached to one side of the substantially rectangular support plate 12. To the other side of the support plate 12, one end of an elevating mechanism 13 that supports the support plate 12 so that it can move back and forth is attached. The other end of the lifting mechanism 13 is fixed to the device body 3. The elevating mechanism 13 is a member that has a double-tube structure as a whole and is expandable and contractible. This double-tube structure allows expansion and contraction.

更に、この入力装置６を適正な位置、すなわち所定の押圧力に達するように押圧機構１４が取り付けられている。押圧機構１４は、昇降機構１３に並列するように取り付けられている。この押圧機構１４の他端は装置本体３に固定されている。 Further, a pressing mechanism 14 is attached so that the input device 6 reaches an appropriate position, that is, a predetermined pressing force. The pressing mechanism 14 is attached in parallel with the elevating mechanism 13. The other end of the pressing mechanism 14 is fixed to the device body 3.

同様に、受信装置７（加速度センサ９）についても、略長方形状の支持板１２の一側に取り付けられ、この支持板１２の他側に、これを進退自在に支持する昇降機構１３の一端が取り付けられている。この昇降機構１３の他端は装置本体３に固定されている。 Similarly, the receiving device 7 (acceleration sensor 9) is also attached to one side of the substantially rectangular support plate 12, and the other side of the support plate 12 is provided with one end of an elevating mechanism 13 for supporting the same in a retractable manner. It is installed. The other end of the lifting mechanism 13 is fixed to the device body 3.

更に、この受信装置７を適正な位置、すなわち所定の押圧力に達するように押圧機構１４が固定されている。押圧機構１４は、昇降機構１３に並列するように取り付けられている。この押圧機構１４の他端は装置本体３に固定されている。 Further, the pressing mechanism 14 is fixed so that the receiving device 7 reaches an appropriate position, that is, a predetermined pressing force. The pressing mechanism 14 is attached in parallel with the elevating mechanism 13. The other end of the pressing mechanism 14 is fixed to the device body 3.

各押圧機構１４は、コイルバネ等の弾性部材から成り、その一端が支持板１２、その他端が装置本体３に取り付けられた部材である。この押圧機構１４の押圧力により、入力装置６の離隔保持用車輪１０、受信装置７の検査用車輪１１は、所定の押圧力で構造物Ｃに接するようになる。 Each pressing mechanism 14 is made of an elastic member such as a coil spring, one end of which is attached to the support plate 12, and the other end of which is attached to the apparatus body 3. Due to the pressing force of the pressing mechanism 14, the separation holding wheel 10 of the input device 6 and the inspection wheel 11 of the receiving device 7 come into contact with the structure C with a predetermined pressing force.

また、このように略長方形状の各支持板１２は、昇降機構１３と押圧機構１４の２点で支持される構造になる。そのため軸方向回りでの回動が阻止され、各支持板１２に装着された入力装置６又は受信装置７が、装置全体が走行する際にぶれないようになっている。
なお、入力装置６と受信装置７を支持する構成は、上述した昇降機構１３、押圧機構１４の構成に限定されない。 In addition, each support plate 12 having a substantially rectangular shape is structured to be supported at two points of the elevating mechanism 13 and the pressing mechanism 14. Therefore, rotation around the axial direction is prevented, and the input device 6 or the receiving device 7 mounted on each support plate 12 does not shake when the entire device travels.
The configuration that supports the input device 6 and the receiving device 7 is not limited to the configurations of the elevating mechanism 13 and the pressing mechanism 14 described above.

＜入力装置の防護部材の構成＞
図３は防護部材を示す拡大正面図である。図４は防護部材を示す一部切欠いた拡大正面図である。
試験装置２を構成する入力装置６、受信装置７は、これを保護するための保護カバー５にそれぞれ覆われている。更に本発明では図示するように入力装置６を防護する防護部材１５が設けられている。受信装置７にもこれを防護する防護部材１６が設けられている。実施例１の防護部材１５は、入力装置６の離隔保持用車輪１０が、構造物Ｃの段差部や溝に直接衝突することを防止し、その衝撃を低減するためのものである。 <Structure of protective member of input device>
FIG. 3 is an enlarged front view showing the protective member. FIG. 4 is an enlarged front view showing a protection member with a part cut away.
The input device 6 and the receiving device 7 constituting the test apparatus 2 are covered with a protective cover 5 for protecting them. Further, in the present invention, as shown in the figure, a protection member 15 for protecting the input device 6 is provided. The receiving device 7 is also provided with a protective member 16 for protecting it. The protective member 15 of the first embodiment is for preventing the separation holding wheel 10 of the input device 6 from directly colliding with the stepped portion or groove of the structure C and reducing the impact thereof.

構造物Ｃにおける段差部や溝が大きい状態では、先ず保護カバー５で保護される。逆に、構造物Ｃにおける段差部や溝が小さい状態では、入力装置６は昇降機構１３により、これらとの衝突を回避することができる。しかし、ある程度の大きさを有する段差部や溝の場合は、この防護部材１５が入力装置６を防護するようになっている。 When the structure C has a large step or groove, it is first protected by the protective cover 5. On the contrary, in the state where the stepped portion or the groove in the structure C is small, the input device 6 can avoid the collision with these by the elevating mechanism 13. However, in the case of a step or a groove having a certain size, the protection member 15 protects the input device 6.

この防護部材１５は、入力装置６の先端側を包むように、貫通穴部を有する１枚の金属板の２か所で先端側へ曲折したものである（図９参照）。この曲折した金属板の両先端縁が、入力装置６の先端側から装置本体３側へ傾斜した形状の傾斜部１５ａを形成したものである。この防護部材１５は傾斜部１５ａと反対の位置に昇降機構１３が取り付けられて、装置本体３において進退自在になる。防護部材１５の先端１５ｂ（図示では下端）は、入力装置６の離隔保持用車輪１０の車軸１０ａ中心より先端側に位置し、車軸１０ａに直接走行方向の力が作用することを防ぐように構成した。 The protective member 15 is formed by bending the front end side of the input device 6 so that the front end side is bent at two positions of a single metal plate having a through hole (see FIG. 9). Both bent edges of the bent metal plate form a tilted portion 15a that is tilted from the leading end side of the input device 6 toward the device body 3 side. The elevating mechanism 13 is attached to the protective member 15 at a position opposite to the inclined portion 15a, and the protective member 15 can be moved back and forth in the apparatus body 3. The front end 15b (lower end in the figure) of the protective member 15 is located on the front end side with respect to the center of the axle 10a of the separation holding wheel 10 of the input device 6, and is configured to prevent a force in the traveling direction from directly acting on the axle 10a. did.

実施例１の防護部材１５は、入力装置６の先端側の離隔保持用車輪１０から、この入力装置６の後端側のその周辺へ行くに従い傾斜した傾斜部１５ａを形成したものである。この傾斜部１５ａが、走行中の入力装置６の離隔保持用車輪１０が構造物Ｃの段差部や溝に当たり、入力装置６には直接当たらないようにする機能を有する。この防護部材１５の傾斜部１５ａにより、走行中の入力装置６は装置本体３側に移動する。即ち、引っこむ状態になることで、入力装置６への衝撃、また破損を防止することができる。 The protection member 15 of the first embodiment is formed by forming an inclined portion 15a that is inclined from the separation holding wheel 10 on the front end side of the input device 6 to the periphery of the rear end side of the input device 6. The inclined portion 15a has a function of preventing the separation holding wheel 10 of the input device 6 during traveling from hitting the stepped portion or groove of the structure C and directly hitting the input device 6. The inclined portion 15a of the protection member 15 moves the input device 6 during traveling to the device body 3 side. That is, when the input device 6 is retracted, it is possible to prevent impact and damage to the input device 6.

なお、構造物Ｃの平坦で変状部がない箇所では、入力装置６の先端部の離隔保持用車輪１０はこの防護部材１５の傾斜部１５ａより突出した位置にあるため、その離隔保持用車輪１０の打撃による入力作業に支障はない。 In addition, at a portion of the structure C that is flat and has no deformed portion, the separation holding wheel 10 at the tip end portion of the input device 6 is in a position projecting from the inclined portion 15a of the protection member 15, and thus the separation holding wheel. There is no hindrance in inputting work by hitting 10.

＜受信装置の防護部材の構成＞
実施例１の受信装置７にも、上述した入力装置６と同様にその先端側に防護部材１６が設けられている。この防護部材１６は、受信装置７の先端側のセンサの検査用車輪１１から、この受信装置７の後端側のその周辺へ行くに従い傾斜した傾斜部１６ａを形成したものである。防護部材１６の先端１６ｂ（図示では下端）は、受信装置７の検査用車輪１１の車軸１１ａ中心より先端側に位置し、車軸１１ａに直接走行方向の力が作用することを防ぐように構成した。この傾斜部１６ａが、走行中の受信装置７の検査用車輪１１が構造物Ｃの段差部や溝に当たり、受信装置７に直接当たらないようにする機能を有する。この防護部材１６の傾斜部１６ａにより、走行中の受信装置７は装置本体３側に移動することで、受信装置７への衝撃、また破損を防止することができる。 <Structure of protective member of receiving device>
Similarly to the input device 6 described above, the receiving device 7 of the first embodiment is also provided with the protective member 16 on the tip side thereof. The protective member 16 is formed by forming an inclined portion 16a that is inclined from the inspection wheel 11 of the sensor on the front end side of the receiving device 7 toward the periphery on the rear end side of the receiving device 7. The tip 16b (bottom end in the figure) of the protection member 16 is located closer to the tip than the center of the axle 11a of the inspection wheel 11 of the receiving device 7, and is configured to prevent a force in the traveling direction from directly acting on the axle 11a. .. The inclined portion 16 a has a function of preventing the inspection wheels 11 of the receiving device 7 during traveling from hitting the stepped portion or the groove of the structure C and directly hitting the receiving device 7. By the inclined portion 16a of the protective member 16, the receiving device 7 moving can be moved to the device main body 3 side to prevent the receiving device 7 from being impacted or damaged.

なお、構造物Ｃの平坦で変状部がない箇所では、受信装置７の先端側の検査用車輪１１はこの防護部材１６の傾斜部１６ａより突出した位置にあるため、その検査用車輪１１の打撃による入力作業に支障はない。 In addition, at a portion of the structure C that is flat and has no deformed portion, the inspection wheel 11 on the tip side of the receiving device 7 is in a position protruding from the inclined portion 16a of the protective member 16, and therefore the inspection wheel 11 There is no hindrance in inputting work by hitting.

＜防護部材の防護機能の説明＞
図５は防護部材の防護機能を説明する拡大概略説明図である。
本発明の防護部材１５，１６の傾斜部１５ａ，１６ａは、試験装置２（入力装置６，受信装置７）で接触走行試験をしているときに、この防護部材１５，１６が構造物Ｃに接触した状態の力学の作用関係を説明する。防護部材１５，１６の傾斜部１５ａ，１６ａが、段差部、溝の開口縁に接触したときは、走行方向（図示では水平方向）の外力（Ｘ）は、傾斜部１５ａ，１６ａに沿う成分の分力（Ｙ）と傾斜部１５ａ，１６ａに直交する成分の分力（Ｚ）に分解される。傾斜部１５ａ，１６ａに直交する成分の分力（Ｚ）は、さらに試験装置２の入力装置６、受信装置７を走行方向に押す成分の分力（Ｎ）と、垂直方向に押し戻す（図示では押し上げる）成分の分力（Ｍ）に分解される。即ち、試験装置２（入力装置６，受信装置７）を戻すことができる。この分力（Ｎ）はもとの外力（Ｘ）より十９可能である。 <Explanation of protective function of protective member>
FIG. 5 is an enlarged schematic explanatory diagram for explaining the protective function of the protective member.
The inclined portions 15a and 16a of the protective members 15 and 16 of the present invention have the protective members 15 and 16 attached to the structure C during the contact traveling test by the test device 2 (the input device 6 and the receiving device 7). The action relationship of the dynamics of the contact state will be described. When the inclined portions 15a and 16a of the protection members 15 and 16 come into contact with the stepped portion and the opening edge of the groove, the external force (X) in the traveling direction (horizontal direction in the drawing) is a component along the inclined portions 15a and 16a. It is decomposed into a component force (Y) and a component force (Z) of a component orthogonal to the inclined portions 15a and 16a. The component force (Z) of the component orthogonal to the inclined portions 15a and 16a is further pushed back in the vertical direction together with the component force (N) of the component that pushes the input device 6 and the receiving device 7 of the test apparatus 2 in the traveling direction. Push up) component is decomposed into component force (M). That is, the test apparatus 2 (the input device 6 and the receiving device 7) can be returned. This component force (N) is nineteen possible from the original external force (X).

図６は防護部材の防護機能を説明する比較図であり、（ａ）は防護部材を取り付ける前の状態を示す車輪の拡大正面図、（ｂ）は防護部材を取り付け、拡大した車輪の仮想線を示す拡大正面図である。
本発明の防護部材１５，１６の傾斜部１５ａ，１６ａは、離隔保持用車輪１０又は検査用車輪１１の一部と同じ機能を有する。図６（ａ）に示すように、防護部材１５，１６を取り付ける前の状態では、その離隔保持用車輪１０、検査用車輪１１の半径（ｒ１）より深い窪み、段差では、上述したように、離隔保持用車輪１０（入力装置６）又は検査用車輪１１（受信装置７）がこの部分を乗り越えられないことがある。
一方、図６（ｂ）に示すように、各車輪１０，１１に防護部材１５，１６を取り付けると、この防護部材１５，１６の傾斜部１５ａ，１６ａの角部１５ｂ，１６ｂまでが、深い窪み、段差の縁を乗り越えられる位置となる。図示するように、恰も各車輪１０，１１の半径が、実際の半径（ｒ１）から仮想（仮想線ｖｗ）の半径（ｒ２）までに拡大した状態になる。符号ｃｐは、仮想の回転軸の中心点を示す。 6A and 6B are comparative diagrams for explaining the protective function of the protective member, FIG. 6A is an enlarged front view of the wheel showing a state before the protective member is attached, and FIG. 6B is an imaginary line of the enlarged wheel with the protective member attached. It is an enlarged front view showing.
The inclined portions 15a and 16a of the protection members 15 and 16 of the present invention have the same function as a part of the separation holding wheel 10 or the inspection wheel 11. As shown in FIG. 6A, in the state before the protection members 15 and 16 are attached, as described above, in the recesses and steps deeper than the radius (r1) of the separation holding wheel 10 and the inspection wheel 11, The separation holding wheel 10 (input device 6) or the inspection wheel 11 (reception device 7) may not be able to get over this portion.
On the other hand, as shown in FIG. 6(b), when the protection members 15 and 16 are attached to the wheels 10 and 11, the sloped portions 15a of the protection members 15 and 16 and the corner portions 15b and 16b of the protection members 15 and 16 are deeply depressed. , The position where you can get over the edge of the step. As shown in the drawing, the radius of each wheel 10, 11 is in a state of being enlarged from the actual radius (r1) to the virtual (virtual line vw) radius (r2). The symbol cp indicates the center point of the virtual rotation axis.

このように、本発明の非破壊試験装置１では、試験装置２の入力装置６、受信装置７に防護部材１５，１６をそれぞれ取り付けたので、入力装置６（離隔保持用車輪１０）又は受信装置７（検査用車輪１１）の各車輪半径（ｒ１）よりも大きな窪み、段差については、防護部材１５，１６が先にこの窪み、段差に接触し、離隔保持用車輪１０又は検査用車輪１１を垂直方向に押し戻す成分の分力（Ｍ）の作用により入力装置６、受信装置７を検査対象となる構造物Ｃに押し付ける押圧機構１４が縮むことで、窪み、段差部分を滑らかに通過できる。勿論各車輪１０，１１の半径（ｒ１）よりも小さな窪み、段差については従来通り各車輪１０，１１単体で無理なく乗り越えることができる。即ち、防護部材１５，１６を設けることで、構造物Ｃにおける小さな窪み、段差、大きな窪み、段差でも両方に対応できるようになる。 As described above, in the nondestructive testing device 1 of the present invention, since the protective members 15 and 16 are attached to the input device 6 and the receiving device 7 of the testing device 2, respectively, the input device 6 (separation holding wheel 10) or the receiving device. 7 (inspection wheel 11) having a recess or step larger than each wheel radius (r1), the protective members 15 and 16 first come into contact with the recess or step, and the separation holding wheel 10 or the inspection wheel 11 By the action of the component force (M) of the component that pushes back in the vertical direction, the pressing mechanism 14 that presses the input device 6 and the receiving device 7 against the structure C to be inspected contracts, so that the depressions and stepped portions can smoothly pass. Of course, as for the depressions and steps smaller than the radius (r1) of the wheels 10 and 11, the wheels 10 and 11 can be easily overcome by themselves as in the conventional case. That is, by providing the protection members 15 and 16, it becomes possible to cope with both small depressions, stepped portions, large depressions, and stepped portions in the structure C.

＜入力装置と受信装置の防護部材の動作状態＞
図７は本発明の非破壊試験装置の動作状態を示す拡大正面図であり、（ａ）は構造物が平坦な場合、（ｂ）は構造物表面に小さな段差、溝がある場合である。図８は本発明の非破壊試験装置の動作状態を示す拡大正面図であり、（ｃ）は構造物表面に大きな段差、溝がある場合、（ｄ）は構造物表面に更に大きな段差、溝がある場合である。
このように、本発明の非破壊試験装置１は、検査対象物の構造物Ｃの表面において、装置を走行させながら弾性波を構造物Ｃ内に入力する際に、入力装置６の先端側と、受信装置７の先端側を防護する防護部材１５，１６をそれぞれ備えているので、構造物Ｃ表面の凹凸部における衝撃を低減することができる。
図７（ａ）のように構造物Ｃが平坦な場合には、入力装置６（打撃ハンマ８）は適正な状態で弾性波を入力することができる。その弾性波の受信も受信装置７は適正な状態で受信することができる。
図７（ｂ）のように、構造物Ｃにおける段差部や溝が小さい状態では、入力装置６は昇降機構１３により、これらとの衝突を回避することができる。伝播した弾性波を受信する受信装置７は昇降機構１３により、これらとの衝突を回避することができる。 <Operating state of protective member of input device and receiving device>
7A and 7B are enlarged front views showing the operating state of the nondestructive testing apparatus of the present invention. FIG. 7A is a case where the structure is flat, and FIG. 7B is a case where there are small steps and grooves on the surface of the structure. FIG. 8 is an enlarged front view showing an operating state of the nondestructive testing apparatus of the present invention. (c) shows a large step or groove on the structure surface, and (d) shows a larger step or groove on the structure surface. If there is.
As described above, the non-destructive testing apparatus 1 of the present invention, when the elastic wave is input into the structure C while the apparatus is running on the surface of the structure C of the inspection object, the non-destructive testing apparatus Since the protective members 15 and 16 for protecting the tip end side of the receiving device 7 are provided, the impact on the uneven portion of the surface of the structure C can be reduced.
When the structure C is flat as shown in FIG. 7A, the input device 6 (striking hammer 8) can input the elastic wave in an appropriate state. The receiving device 7 can also receive the elastic wave in an appropriate state.
As shown in FIG. 7B, in the state where the stepped portion or the groove in the structure C is small, the input device 6 can avoid the collision with these by the elevating mechanism 13. The elevating mechanism 13 of the receiving device 7 that receives the propagated elastic waves can avoid collision with them.

図８（ｃ）のように、構造物Ｃに段差、溝がある場合には、この防護部材１５，１６の傾斜部１５ａ，１６ａは、構造物Ｃ表面の段差部、溝の開口縁に最初に当たり、入力装置６、受信装置７を保護する。因みに、溝が深いときは、入力装置６、受信装置７が構造物Ｃに接触しないこともある。そこで、構造物Ｃに段差（欠け等）が多く存在するときも、回避動作に時間を要することもなく、入力装置６、受信装置７を破損する恐れもない。
なお、図８（ｄ）のように、構造物Ｃ表面に大きな段差があるときは、先ず保護カバー５が構造物Ｃ表面の段差部、溝の開口縁に最初に当たり、入力装置６、受信装置７には直接当たらないようになる。 As shown in FIG. 8C, when the structure C has a step or a groove, the inclined portions 15a and 16a of the protective members 15 and 16 are first provided at the step of the surface of the structure C and the opening edge of the groove. In this case, the input device 6 and the receiving device 7 are protected. Incidentally, when the groove is deep, the input device 6 and the receiving device 7 may not come into contact with the structure C. Therefore, even when there are many steps (chips, etc.) in the structure C, the avoidance operation does not take time, and the input device 6 and the receiving device 7 are not damaged.
When there is a large step on the surface of the structure C as shown in FIG. 8D, the protective cover 5 first contacts the stepped portion of the surface of the structure C and the opening edge of the groove, and the input device 6 and the receiving device You will not hit 7 directly.

＜入力装置と受信装置の連動動作機構の構成＞
図９は実施例２の相互に連動動作する機能を有する防護部材を示し、（ａ）は正面図、（ｂ）は背面図、（ｃ）は底面図、（ｄ）は連動動作機能の概略説明斜視図である。
実施例２の防護部材１５，１６は、相互に連動動作する機能を有する。実施例２の構成は、第１防護部材１５と第２防護部材１６とが連動するように構成されている。入力装置６が上述した防護部材１５の傾斜部１５ａで進退すると同時に、これに隣接する受信装置７を進退させる必要がある。入力装置６を防護しても隣接する受信装置７がそのままの位置であると、構造物Ｃの段差（欠け等）等に衝突するおそれがある。そこで、実施例２では、第１防護部材１５と第２防護部材１６との２個１組の構成になる。ここで、第１、第２と表現したのは、等級、順番を表すのではなく、同一形状、同一の機能を有する部材を区分けするために便宜的に使用するものである。 <Structure of interlocking operation mechanism between input device and receiving device>
9A and 9B show protective members having a function of interlocking with each other according to the second embodiment, where FIG. 9A is a front view, FIG. 9B is a rear view, FIG. 9C is a bottom view, and FIG. It is an explanatory perspective view.
The protection members 15 and 16 of the second embodiment have a function of interlocking with each other. The configuration of the second embodiment is configured such that the first protection member 15 and the second protection member 16 are interlocked. At the same time that the input device 6 advances and retreats at the inclined portion 15a of the protective member 15 described above, it is necessary to advance and retract the receiving device 7 adjacent thereto. Even if the input device 6 is protected, if the adjacent receiving device 7 is in the same position as it is, there is a possibility that it may collide with a step (such as a chip) of the structure C. Therefore, in the second embodiment, a pair of the first protection member 15 and the second protection member 16 is used. Here, the terms "first" and "second" are used for convenience not to indicate grades and orders but to classify members having the same shape and the same function.

第１防護部材１５と第２防護部材１６の基本的な構成は、上述した防護部材１５，１６と同様である。第１防護部材１５、第２防護部材１６は、入力装置６又は受信装置７の先端側を包むように、貫通穴部を有する１枚の金属板の２か所で先端側へ曲折したものである。この曲折した金属板の両先端縁が、入力装置６又は受信装置７の先端側から装置本体３側へ傾斜した形状の傾斜部１５ａ，１６ａを形成する。第１防護部材１５、第２防護部材１６はそれぞれ傾斜部１５ａ，１６ａと反対の位置に昇降機構１３が取り付けられている。この昇降機構１３により装置本体３に対して進退自在になる。 The basic configurations of the first protection member 15 and the second protection member 16 are the same as the protection members 15 and 16 described above. The first protective member 15 and the second protective member 16 are formed by bending the front end side of the input device 6 or the receiving device 7 so as to wrap around the front end side at two positions of a single metal plate having a through hole. .. Both bent edges of the bent metal plate form inclined portions 15a and 16a having a shape inclined from the leading end side of the input device 6 or the receiving device 7 toward the device body 3 side. The lifting mechanism 13 is attached to the first protection member 15 and the second protection member 16 at positions opposite to the inclined portions 15a and 16a, respectively. The elevating mechanism 13 allows the device body 3 to move back and forth.

第１防護部材１５の傾斜部１５ａの反対側に連動動作機構を設けている。
この第１防護部材１５の傾斜部１５ａの反対側（図示上は右側）に、先端位置（図示上は下側）に先端側爪部２１が、後端位置（図示上は上側）に後端側爪部２２が第２防護部材１６側へ突出するように、第１防護部材１５の昇降方向に対して直角方向へずらしてそれぞれ設けられている。
第２防護部材１６の傾斜部１６ａの反対側（図示上は左側）には、後端位置に（図示上は上側）後端側爪部２３が、先端位置（図示上は下側）に先端側爪部２４が前記第１防護部材１５側へ突出するように、第２防護部材１６の昇降方向に対して直角方向へずらしてそれぞれ設けられている。 An interlocking operation mechanism is provided on the opposite side of the inclined portion 15a of the first protection member 15.
On the opposite side (right side in the figure) of the inclined portion 15a of the first protection member 15, the tip side claw portion 21 is provided at the tip position (lower side in the figure), and the rear end is provided at the rear end position (upper side in the figure). The side claw portions 22 are provided so as to project in the direction of the second protective member 16 and shifted in the direction perpendicular to the vertical direction of the first protective member 15.
On the opposite side (left side in the figure) of the inclined portion 16a of the second protection member 16, a rear end side claw portion 23 is provided at the rear end position (upper side in the figure) and at the tip position (lower side in the figure). The side claw portions 24 are provided so as to project in the direction of the first protection member 15 and are displaced in the direction perpendicular to the vertical direction of the second protection member 16.

図１０は連動動作機構の動作状態を示す拡大正面図であり、（ａ）は第１防護部材と共に第２防護部材が後端側へ移動する状態、（ｂ）は第１防護部材と共に第２防護部材を先端側へ移動する状態である。図１１は連動動作機構の動作状態を示す拡大正面図であり、（ｃ）は第２防護部材と共に第１防護部材が後端側へ移動する状態、（ｄ）は第２防護部材と共に第１防護部材を先端側（図示上は下側）へ移動させる状態である。
この第１防護部材１５の先端側爪部２１と第２防護部材１６の後端側爪部２３との間隔（ｔ１）、又は第１防護部材１５の後端側爪部２２と第２防護部材１６の先端側爪部２４との間隔（ｔ２）は、入力装置６の離隔保持用車輪１０の進退間隔（ｔ３）と同程度あれば十分である。この進退間隔（ｔ３）より長いと、第１防護部材１５で入力装置６が防護されても、受信装置７が防護されないことがあるからである。逆に、離隔保持用車輪１０の進退間隔（ｔ３）より短すぎると、受信装置７の検査用車輪１１が適切な押圧力で構造物Ｃの表面に接していないため伝播する弾性波を正確に受信できないことがあるためである。 FIG. 10 is an enlarged front view showing an operating state of the interlocking operation mechanism. (a) shows a state in which the second protective member moves to the rear end side together with the first protective member, and (b) shows a second state together with the first protective member. In this state, the protective member is moved to the tip side. FIG. 11 is an enlarged front view showing an operating state of the interlocking operation mechanism, (c) shows a state in which the first protective member moves to the rear end side together with the second protective member, and (d) shows a first protective member together with the first protective member. This is a state in which the protective member is moved to the tip side (downward in the figure).
The distance (t1) between the front end side claw portion 21 of the first protection member 15 and the rear end side claw portion 23 of the second protection member 16, or the rear end side claw portion 22 and the second protection member of the first protection member 15. It suffices that the distance (t2) from the front end side claw portion 16 of 16 is approximately the same as the forward/backward distance (t3) of the distance maintaining wheel 10 of the input device 6. If it is longer than this advance/retreat interval (t3), the receiving device 7 may not be protected even if the input device 6 is protected by the first protective member 15. On the other hand, if the distance between the advancing/retreating wheels 10 is too short (t3), the inspection wheels 11 of the receiving device 7 are not in contact with the surface of the structure C with an appropriate pressing force, so that the propagating elastic waves are accurately generated. This is because it may not be received.

このように構成された第１防護部材１５と第２防護部材１６は、図１０（ａ）に示すように、第１防護部材１５の先端側爪部２１が、第２防護部材１６の後端側爪部２３に当たることで、第１防護部材１５と共に第２防護部材１６を後端側へ移動させることができる。
図１０（ｂ）に示すように、第１防護部材１５の後端側爪部２２が、第２防護部材１６の先端側爪部２４に当たることで、第１防護部材１５と共に第２防護部材１６を先端側へ移動させることができる。 In the first protection member 15 and the second protection member 16 configured as described above, as shown in FIG. 10A, the front end side claw portion 21 of the first protection member 15 has the rear end of the second protection member 16. By hitting the side claw portion 23, the second protective member 16 can be moved to the rear end side together with the first protective member 15.
As shown in FIG. 10B, the rear end side claw portion 22 of the first protection member 15 abuts on the front end side claw portion 24 of the second protection member 16 so that the second protection member 16 together with the first protection member 15. Can be moved to the tip side.

また、図１１（ｃ）に示すように、第２防護部材１６の先端側爪部２４が、第１防護部材１５の後端側爪部２２に当たることで、第２防護部材１６と共に第１防護部材１５を後端側へ移動させることができる。
図１１（ｄ）に示すように、第２防護部材１６の後端側爪部２３が、第１防護部材１５の先端側爪部２１に当たることで、第２防護部材１６と共に第１防護部材１５を先端側へ移動させることができる。そこで、第１防護部材１５で入力装置６が引っ込む状態のときは、第１防護部材１６で受信装置７も引っ込む状態になり、段差部、溝の開口縁との衝突を回避することができる。逆に、第１防護部材１５で入力装置６が元の位置に戻ると、第２防護部材１６で受信装置７も元の位置に戻るようになる。同様に、第２防護部材１６による受信装置７の動作に連動して、第１防護部材１５で入力装置６の動作も連動させることができる。 Further, as shown in FIG. 11C, the tip side claw portion 24 of the second protection member 16 hits the rear end side claw portion 22 of the first protection member 15, so that the first protection member 16 and the first protection member 16 are protected. The member 15 can be moved to the rear end side.
As shown in FIG. 11D, the rear end side claw portion 23 of the second protection member 16 hits the front end side claw portion 21 of the first protection member 15, so that the second protection member 16 and the first protection member 15 Can be moved to the tip side. Therefore, when the input device 6 is retracted by the first protection member 15, the reception device 7 is also retracted by the first protection member 16, and it is possible to avoid a collision with the stepped portion or the opening edge of the groove. On the contrary, when the input device 6 is returned to the original position by the first protection member 15, the reception device 7 is also returned to the original position by the second protection member 16. Similarly, the operation of the input device 6 can be interlocked with the first protective member 15 in conjunction with the operation of the receiving device 7 by the second protective member 16.

＜接触式非破壊試験方法の構成＞
上述した構成の非破壊試験装置１を用いて、コンクリート等の構造物Ｃを常に接触しながら構造物Ｃ内部の欠陥を検査する方法について説明する。
先ず、非破壊試験を実施する試験装置２（入力装置６，受信装置７）を搭載した非破壊試験装置１（装置本体３）を構造物Ｃの表面で移動させる。この非破壊試験装置１は、構造物Ｃの表面が平坦な場合は、防護部材１５，１６に段差等が衝突しないので、円滑に走行させることができ、非破壊試験を実施することができる。 <Construction of contact-type nondestructive testing method>
A method for inspecting defects inside the structure C while constantly contacting the structure C such as concrete by using the nondestructive testing apparatus 1 having the above-described configuration will be described.
First, the nondestructive testing apparatus 1 (apparatus body 3) equipped with the testing apparatus 2 (input apparatus 6, receiving apparatus 7) for performing the nondestructive test is moved on the surface of the structure C. When the surface of the structure C is flat, the non-destructive testing apparatus 1 does not collide with the protective members 15 and 16 due to a step or the like, so that the non-destructive testing apparatus 1 can travel smoothly and can perform a non-destructive test.

この段差、凹凸部が所定の高さを超えたが、非破壊試験装置１を停止させる程度の大きな段差ではないときは、非破壊試験装置１の走行速度を保ったまま、その接触走行試験を継続する。このように、本発明の防護部材１５，１６は文字通りの試験装置２（入力装置６，受信装置７）の防護だけでなく、試験の精度を高める契機にもなる機能を併せ持つ。 When the step and the uneven portion exceed the predetermined height but are not large enough to stop the nondestructive testing apparatus 1, the contact running test is performed while maintaining the running speed of the nondestructive testing apparatus 1. continue. As described above, the protective members 15 and 16 of the present invention have not only the literal protection of the test apparatus 2 (the input apparatus 6 and the receiving apparatus 7) but also the function of triggering an increase in the accuracy of the test.

＜片側のみに設けた防護部材付き接触式非破壊試験装置の構成＞
図１２は実施例３の片側のみに設けた防護部材付き非破壊試験装置を示す正面図である。図１３は実施例３の片側のみに設けた防護部材付き非破壊試験装置の保護カバーを外した状態を示す正面図である。図示例では試験装置の弾性波の入力方向（入力装置と受信装置）が下向きであるが、これは一例であって、図１７に示したように、横向き、上向きと何れの方向にも向けて試験する装置である。
上述した実施例１、実施例２では、非破壊試験装置１の走行方向とその反対の両側に防護部材１５，１６を設けた状態を示した。しかし、非破壊試験装置の走行方向が一方のみに決められているときは、防護部材１５を片側、即ち走行する方向のみに取り付けたものでもよい。実施例３の片側のみに設けた防護部材付き非破壊試験装置１は、構造物Ｃ内に、昇降機構１３と押圧機構１４により所定の押圧力で構造物Ｃ表面と離隔保持用車輪１０により一定の間隔を保ち、断続的に検査用車輪１１が接触し、弾性波を入力する入力装置６、構造物Ｃで伝播した弾性波を受信する受信装置７などの試験装置２とを備えた装置である。 <Construction of contact-type nondestructive testing device with protective member provided on only one side>
FIG. 12 is a front view showing a nondestructive testing apparatus with a protective member provided on only one side of Example 3. FIG. 13 is a front view showing a state in which the protective cover of the nondestructive testing apparatus with a protective member provided on only one side of Example 3 is removed. In the illustrated example, the input direction of the elastic wave of the test device (input device and receiving device) is downward, but this is an example, and as shown in FIG. This is the device to be tested.
In the above-described first and second embodiments, the state in which the protective members 15 and 16 are provided on both sides of the non-destructive testing apparatus 1 opposite to the running direction is shown. However, when the traveling direction of the nondestructive testing device is determined to be only one, the protective member 15 may be attached to one side, that is, only the traveling direction. The non-destructive testing device with a protective member 1 provided on only one side of the third embodiment has a structure in which the surface of the structure C and the wheel 10 for keeping the distance apart are fixed in the structure C by the elevating mechanism 13 and the pressing mechanism 14 with a predetermined pressing force. A test device 2 such as an input device 6 for inputting an elastic wave and a receiving device 7 for receiving the elastic wave propagated in the structure C. is there.

実施例３では、傾斜部１５ａを有する防護部材１５は、片側即ち非破壊試験装置１の走行する方向のみに取り付けた。この防護部材１５は、上述したものと同様に、構造物Ｃ表面の凹凸部、段差に接したときに試験装置２を防護するための部材である。この防護部材１５も、その傾斜部１５ａの先端１５ｂが試験装置２の離隔保持用車輪１０の車軸１０ａ中心より先に位置し、装置本体３の走行方向の力が車軸１０ａに直接作用することを防ぐように構成したものである。 In Example 3, the protective member 15 having the inclined portion 15a was attached only to one side, that is, in the traveling direction of the nondestructive testing apparatus 1. This protective member 15 is a member for protecting the test apparatus 2 when it comes into contact with the uneven portion or the step on the surface of the structure C, as in the above-mentioned case. Also in this protection member 15, the tip end 15b of the inclined portion 15a is located ahead of the center of the axle 10a of the separation holding wheel 10 of the test apparatus 2 so that the force in the traveling direction of the apparatus body 3 directly acts on the axle 10a. It is configured to prevent.

＜変形例１の緩衝材から成る防護部材の構成＞
図１４は変形例１の緩衝材から成る防護部材を示す正面図である。
防護部材の構成は、金属板を曲折した構成のものに限定されない。変形例１の防護部材３１，３２は、入力装置６又は受信装置７の先端側から、入力装置６又は受信装置７の装置本体３の装着位置までを防護するように、上述した傾斜部１５ａ，１６ａに代えて、合成樹脂製の傾斜面３１ａ，３２ａを有するブロック状の緩衝材３１，３２にしたものである。この変形例１のような傾斜面３１ａ，３２ａを有するブロック状の緩衝材から成る防護部材３１，３２でも、入力装置６、受信装置７を防護することができる。
なお、このブロック状の緩衝材３１，３２についても、非破壊試験装置１の走行方向が一方のみに決められているときは、ブロック状の緩衝材３１又は３２を片側、即ち走行する方向のみに取り付けたものでもよい。 <Structure of Protective Member Made of Buffer Material of Modification 1>
FIG. 14 is a front view showing a protective member made of the cushioning material of the first modification.
The structure of the protective member is not limited to the bent structure of the metal plate. The protection members 31 and 32 of the modification 1 protect the above-mentioned inclined portion 15a so as to protect from the tip side of the input device 6 or the receiving device 7 to the mounting position of the device body 3 of the input device 6 or the receiving device 7. Instead of 16a, block-shaped cushioning materials 31 and 32 having inclined surfaces 31a and 32a made of synthetic resin are used. The input device 6 and the receiving device 7 can be protected also by the protective members 31 and 32 made of block-shaped cushioning material having the inclined surfaces 31a and 32a as in the first modification.
When the traveling direction of the nondestructive testing device 1 is set to only one of the block-shaped cushioning materials 31 and 32, the block-shaped cushioning material 31 or 32 is arranged only on one side, that is, in the traveling direction. It may be attached.

＜変形例２のバンパー式の防護部材の構成＞
図１５は変形例２のバンパー式の防護部材を示す正面図である。
変形例２の防護部材４１，４２は、上述した傾斜部１５ａ，１６ａに代えて、入力装置６又は受信装置７の先端部近傍へ延びる板ばね状のバンパーを取り付けたものである。変形例２のような板ばね状のバンパー式の防護部材４１，４２でも入力装置６、受信装置７を防護することができる。
なお、このバンパー式の防護部材４１，４２についても、非破壊試験装置１の走行方向が一方のみに決められているときは、防護部材４１又は４２を片側、即ち走行する方向のみに取り付けたものでもよい。 <Structure of Bumper-type Protective Member of Modification 2>
FIG. 15 is a front view showing a bumper type protection member of Modification 2.
The protective members 41 and 42 of the modified example 2 are replaced with the above-mentioned inclined portions 15a and 16a, and a plate spring-shaped bumper extending near the tip of the input device 6 or the receiving device 7 is attached. The input device 6 and the receiving device 7 can also be protected by the leaf spring-shaped bumper type protection members 41 and 42 as in the second modification.
In addition, also in the bumper type protection members 41 and 42, when the traveling direction of the nondestructive testing device 1 is determined to be only one, the protection member 41 or 42 is attached to one side, that is, only the traveling direction. But it is okay.

なお、本発明は、試験装置２（入力装置６、受信装置７）に防護部材１５，１６を装着することで、コンクリート等の構造物Ｃに生じた欠陥個所（変状部）について非破壊試験により点検する際に、入力装置６、受信装置７がその構造物Ｃ表面の段差部、深い溝への衝突を防止すると共に、非破壊試験を正確に実施できる構成であれば、上述した発明の実施の形態に限定されず、本発明の要旨を逸脱しない範囲で種々変更できることは勿論である。 In the present invention, by mounting the protective members 15 and 16 on the testing device 2 (input device 6 and receiving device 7), a non-destructive test is performed on a defective portion (deformed portion) generated in the structure C such as concrete. When the input device 6 and the receiving device 7 are configured to prevent the step C and the deep groove of the surface of the structure C from colliding with each other at the time of inspection by the above, and to accurately perform the nondestructive test, It is needless to say that the present invention is not limited to the embodiment and various changes can be made without departing from the scope of the present invention.

本発明は、鉄道のトンネル、高速道路、建造物等の構造物に限定されず、更にコンクリート以外の金属製、合成樹脂製の構造物の接触式非破壊検査に利用することができる。 INDUSTRIAL APPLICABILITY The present invention is not limited to structures such as railway tunnels, highways, and structures, and can be used for contact-type nondestructive inspection of structures other than concrete such as metal and synthetic resin.

１ 非破壊試験装置
２ 試験装置
４ 走行手段（走行車輪）
６ 入力装置
７ 受信装置
１０ 離隔保持用車輪（入力装置）
１１ 検査用車輪（受信装置）
１２ 支持板
１３ 昇降機構
１４ 押圧機構 １５ 防護部材（第１防護部材）
１６ 防護部材（第２防護部材）
１５ａ 防護部材の傾斜部（第１防護部材の傾斜部）
１６ａ 防護部材の傾斜部（第２防護部材の傾斜部）
２１ 第１防護部材の先端側爪部
２２ 第１防護部材の後端側爪部
２３ 第２防護部材の後端側爪部
２４ 第２防護部材の先端側爪部
３１，３２ 防護部材（緩衝材）
３１ａ，３２ａ 傾斜面
４１，４２ 防護部材（バンパー）
Ｃ 構造物（コンクリート構造物） 1 non-destructive testing device 2 testing device 4 traveling means (traveling wheels)
6 input device 7 receiving device 10 wheel for maintaining separation (input device)
11 Inspection wheels (receiver)
12 Support Plate 13 Lifting Mechanism 14 Pushing Mechanism 15 Protective Member (First Protective Member)
16 Protective member (second protective member)
15a Protective member inclined part (first protective member inclined part)
16a Protective member inclined part (second protective member inclined part)
21 Front-end claw portion of the first protection member 22 Rear-end side claw portion of the first protection member 23 Rear-end side claw portion of the second protection member 24 Tip-side claw portion of the second protection member 31, 32 Protection member (buffer material )
31a, 32a Inclined surface 41, 42 Protective member (bumper)
C structure (concrete structure)

Claims (6)

コンクリート等の構造物（Ｃ）と常に接触しながら該構造物（Ｃ）内部の欠陥を検査する接触式非破壊試験装置（１）であって、
前記構造物（Ｃ）内に、昇降機構（１３）と押圧機構（１４）により所定の押圧力で該構造物（Ｃ）表面と一定の間隔を保ちながら、断続的に離隔保持用車輪（１０）が接触して弾性波を入力する入力装置（６）と、該構造物（Ｃ）で伝播した弾性波を検査用車輪（１１）が接触して受信する受信装置（７）などの試験装置（２）と、
前記試験装置（２）を移動させる走行手段（４）を有する装置本体（３）と、
前記試験装置（２）を防護するために、該試験装置（２）に設けられた、前記構造物（Ｃ）表面の凹凸部、段差に接する傾斜部（１５ａ）を有する防護部材（１５）と、を備え、
前記防護部材（１５）は、その傾斜部（１５ａ）の先端（１５ｂ）が前記試験装置（２）の離隔保持用車輪（１０）の車軸（１０ａ）、又は検査用車輪（１１）の車軸（１１ａ）中心より先に位置し、前記装置本体（３）の走行方向の力が該車軸（１０ａ、１１ａ）に直接作用することを防ぐように構成した、ことを特徴とする防護部材付き接触式非破壊試験装置。 A contact-type nondestructive testing device (1) for inspecting defects inside the structure (C) while always contacting the structure (C) such as concrete,
In the structure (C), the lifting/lowering mechanism (13) and the pressing mechanism (14) intermittently maintain a constant distance from the surface of the structure (C) with a predetermined pressing force, and intermittently maintain the separation wheel (10). ) Is in contact with the input device to input an elastic wave, and a testing device such as a receiving device (7) in which the inspection wheel (11) is in contact with and receives the elastic wave propagated in the structure (C). (2),
A device body (3) having a traveling means (4) for moving the test device (2);
In order to protect the test device (2), a protection member (15) provided on the test device (2), having an uneven portion on the surface of the structure (C) and an inclined portion (15a) contacting a step, ,,
The tip (15b) of the sloped portion (15a) of the protective member (15) is the axle (10a) of the wheel (10) for keeping the separation of the test apparatus (2) or the axle (10) of the wheel (11) for inspection (11). 11a) A contact type with a protective member, which is located ahead of the center and is configured to prevent the force in the traveling direction of the device body (3) from directly acting on the axles (10a, 11a). Non-destructive testing equipment. 前記防護部材（１５）は前記非破壊試験装置（１）の走行方向側に設け、更に走行方向の反対側にも防護部材（１６）を設けた、ことを特徴とする請求項１の防護部材付き接触式非破壊試験装置。 2. The protection member according to claim 1, wherein the protection member (15) is provided on the traveling direction side of the nondestructive testing device (1), and further a protection member (16) is provided on the opposite side of the traveling direction. Contact-type non-destructive testing device with. 前記防護部材（１５，１６）は、
前記入力装置（６）又は受信装置（７）などの試験装置（２）を支持する略長方形状の支持板（１２）に、該試験装置（２）の先端側から、該支持板（１２）側へ傾斜する傾斜部（１５ａ，１６ａ）が形成されたものであり、前記防護部材（１５，１６）の傾斜部（１５ａ，１６ａ）の先端（１５ｂ，１６ｂ）が、前記試験装置（２）の離隔保持用車輪（１０）の車軸（１０ａ）、又は検査用車輪（１１）の車軸（１１ａ）中心より先に位置し、前記装置本体（３）の走行方向の力が該車軸（１０ａ、１１ａ）に直接作用することを防ぐように構成した、ことを特徴とする請求項１又は２の防護部材付き接触式非破壊試験装置。 The protection member (15, 16) is
A support plate (12) having a substantially rectangular shape for supporting a test device (2) such as the input device (6) or the receiving device (7) is attached to the support plate (12) from the tip side of the test device (2). An inclined portion (15a, 16a) inclined to the side is formed, and the tip (15b, 16b) of the inclined portion (15a, 16a) of the protection member (15, 16) is the test device (2). Of the axle (10a) of the separation holding wheel (10) or the center of the axle (11a) of the inspection wheel (11), and the force in the traveling direction of the device body (3) is applied to the axle (10a, The contact-type nondestructive testing device with a protective member according to claim 1 or 2, which is configured to prevent direct action on 11a). 前記入力装置（６）と受信装置（７）は、前記装置本体（３）の走行方向に並ぶように隣接配置され、
前記入力装置（６）に第１防護部材（１５）を、前記受信装置（７）に第２防護部材（１６）をそれぞれ装着し、
前記第１防護部材（１５）の傾斜部（１５ａ）の反対側に、先端位置に先端側爪部（２１）を、後端位置に後端側爪部（２２）を前記第２防護部材（１６）側へ突出するように、該第１防護部材（１５）の昇降方向に対して直角方向へずらしてそれぞれ設け、
前記第２防護部材（１６）の傾斜部（１６ａ）の反対側に、後端位置に後端側爪部（２３）を、先端位置に先端側爪部（２４）を前記第１防護部材（１５）側へ突出するように、該第２防護部材（１６）の昇降方向に対して直角方向へずらしてそれぞれ設け、
前記第１防護部材（１５）の先端側爪部（２１）が、第２防護部材（１６）の後端側爪部（２３）に当たることで、該第１防護部材（１５）と共に該第２防護部材（１６）を後端側へ移動させ、
前記第１防護部材（１５）の後端側爪部（２２）が、第２防護部材（１６）の先端側爪部（２４）に当たることで、該第１防護部材（１５）と共に該第２防護部材（１６）を先端側へ移動させ、
前記第２防護部材（１６）の先端側爪部（２４）が、該第１防護部材（１５）の後端側爪部（２２）に当たることで、該第２防護部材（１６）と共に該第１防護部材（１５）を後端側へ移動させ、
前記第２防護部材（１６）の後端側爪部（２３）が、該第１防護部材（１５）の先端側爪部（２１）に当たることで、該第２防護部材（１６）と共に該第１防護部材（１５）を先端側へ移動させ得るように構成した、ことを特徴とする請求項２又は３の防護部材付き接触式非破壊試験装置。 The input device (6) and the receiving device (7) are adjacently arranged so as to be lined up in the traveling direction of the device body (3),
A first protective member (15) is attached to the input device (6), and a second protective member (16) is attached to the receiving device (7),
On the opposite side of the inclined part (15a) of the first protection member (15), the front end side claw part (21) is located at the front end position and the rear end side claw part (22) is located at the rear end position. 16) so as to project toward the 16) side, the first protection member (15) is provided in such a manner that it is shifted in a direction perpendicular to the vertical direction,
On the opposite side of the inclined portion (16a) of the second protection member (16), the rear end side claw portion (23) is located at the rear end position, and the front end side claw portion (24) is located at the front end position. 15) so as to project toward the 15) side, the second protective member (16) is provided in such a manner that it is shifted in a direction perpendicular to the vertical direction,
The tip side claw portion (21) of the first protection member (15) hits the rear side claw portion (23) of the second protection member (16), so that the second protection member (15) and the second protection member (15) Move the protection member (16) to the rear end side,
The rear end side claw portion (22) of the first protection member (15) abuts on the front side claw portion (24) of the second protection member (16), so that the second protection member (15) and the second protection member (15). Move the protection member (16) to the tip side,
The tip side claw portion (24) of the second protection member (16) abuts the rear side claw portion (22) of the first protection member (15) so that the second protection member (16) and the 1 Move the protection member (15) to the rear end side,
The rear end side claw portion (23) of the second protection member (16) abuts on the front end side claw portion (21) of the first protection member (15), so that the second protection member (16) and the second protection member (16). The contact-type nondestructive testing device with a protective member according to claim 2 or 3, wherein the protective member (15) is configured to be movable toward the tip side. 防護部材（３１，３２）は、
前記入力装置（６）又は受信装置（７）を支持する前記支持板（１２）に、該入力装置（６）又は受信装置（７）の先端側から、該入力装置（６）又は受信装置（７）の該支持板（１２）までを防護する傾斜面（３１ａ，３２ａ）を有するブロック状の緩衝材を取り付けたものである、ことを特徴とする請求項２、３又は４の防護部材付き接触式非破壊試験装置。 The protective member (31, 32) is
On the support plate (12) supporting the input device (6) or the receiving device (7), from the tip side of the input device (6) or the receiving device (7), the input device (6) or the receiving device ( 7. The protective member according to claim 2, 3 or 4, wherein a block-shaped cushioning material having inclined surfaces (31a, 32a) for protecting up to the support plate (12) of 7) is attached. Contact type non-destructive testing device. 防護部材（４１，４２）は、
前記入力装置（６）又は受信装置（７）を支持する前記支持板（１２）に、該入力装置（６）又は受信装置（７）の先端部近傍へ延びる板ばね状のバンパーを取り付けたものである、ことを特徴とする請求項２、３又は４の防護部材付き接触式非破壊試験装置。

The protective member (41, 42) is
A support plate (12) that supports the input device (6) or the receiving device (7) is provided with a leaf spring bumper extending near the tip of the input device (6) or the receiving device (7). The contact-type nondestructive testing device with a protective member according to claim 2, 3, or 4.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113251992A (en) * 2021-06-16 2021-08-13 江苏纬信工程咨询有限公司 Bridge operation fatigue monitoring device and working method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63250563A (en) * 1987-04-08 1988-10-18 Toshiba Corp Ultrasonic flaw detector
JPH11268639A (en) * 1998-03-24 1999-10-05 Osaka Gas Co Ltd Work truck running in a tube
JP2012225746A (en) * 2011-04-19 2012-11-15 Ihi Corp Ultrasonic flaw detection method and ultrasonic flaw detection apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63250563A (en) * 1987-04-08 1988-10-18 Toshiba Corp Ultrasonic flaw detector
JPH11268639A (en) * 1998-03-24 1999-10-05 Osaka Gas Co Ltd Work truck running in a tube
JP2012225746A (en) * 2011-04-19 2012-11-15 Ihi Corp Ultrasonic flaw detection method and ultrasonic flaw detection apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113251992A (en) * 2021-06-16 2021-08-13 江苏纬信工程咨询有限公司 Bridge operation fatigue monitoring device and working method thereof

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