JP4683435B2 - Apparatus for measuring the thickness of a pipe or the inner lining layer of a pipe - Google Patents

Description

  The present invention relates to a thickness measuring device for measuring the thickness of a pipe member such as a water pipe or the thickness of a lining layer applied to the inner peripheral surface of the pipe member.

  Pipe members such as sewage pipes and water pipes are damaged or corroded when used over a long period of time. Therefore, a non-open cutting method for repairing a damaged pipe member by non-open cutting has been proposed and put into practical use (for example, see Patent Document 1). In this non-open-cut repair method, an uncured thermosetting resin tube is used as a lining material. The resin tube is inserted into the pipe member, and air is supplied into the resin tube to be expanded and pressed and held on the inner surface of the pipe. Then, water vapor is supplied into the resin tube and heated, and the resin tube is adhered and cured to the inner surface of the tube member using heat.

JP-A-8-127068

  When covering with a lining material such as a resin tube, the thickness of the lining layer of the lining material is calculated using Timoshenko's formula for factors such as bending elastic modulus and embedment depth, and this value is applied as the design value. The However, the thickness of this lining layer is a design value to the last, and there is no guarantee that the lining layer of this thickness is actually provided after construction.

  Therefore, conventionally, the thickness of the uncured lining material before construction and the thickness of the cut end in the manhole part after construction are measured and approximately obtained. This can be measured using ultrasonic waves to measure the thickness of the resin lining layer applied to the metal pipe member, but was applied to the inner peripheral surface of a pipe member such as a sewer pipe. This is because it is difficult to hold the sensor means in a predetermined positional relationship with respect to the running layer, and such a thickness measuring device has not been realized. For this reason, realization of a thickness measuring apparatus capable of accurately measuring the thickness of the lining layer is strongly desired by a lining material construction contractor and a person who confirms the construction work. In addition to such a demand, for example, in order to know the corrosion state of a buried pipe member, it is desired to realize a thickness measuring device that can accurately measure the thickness of the pipe member itself. .

  An object of the present invention is to provide a lining layer thickness measuring apparatus capable of accurately measuring the thickness of a pipe or the thickness of a lining layer applied to the inner surface of a pipe member.

The apparatus for measuring the thickness of the lining layer on the pipe or the inner surface of the pipe according to claim 1 of the present invention is used to measure the thickness of the pipe member or the thickness of the lining layer applied to the inner peripheral surface of the pipe member. A probe for transmitting ultrasonic waves toward a site and receiving reflected ultrasonic waves from the measurement site, a probe holder for holding the probe, and measurement of the probe Contact medium supplying means for supplying a contact medium between a surface and the measurement site, and the probe is transmitted from the probe and is transmitted from the inner peripheral surface of the tube member or the surface of the lining layer. Based on the propagation time difference between the first propagation path returning to the probe and the second propagation path transmitted from the probe and returning from the outer peripheral surface of the tube member or the back surface of the lining layer to the probe. Measure the thickness or the thickness of the lining layer applied to the inner peripheral surface. In the thickness measuring device of the lining layer of the tube or tube inner surface,
A deep contact positioning means for bringing the deep contact holder into contact or pressure contact with the measurement site is provided, and the deep contact positioning means is attached to the measurement apparatus main body around a turning axis extending in the axial direction of the tube member. A cylindrical member that rotatably supports an intermediate support , the intermediate support movably supporting the deep contact holder in a direction approaching and separating from the inner peripheral surface of the tube member; A contact angle positioning member attached to the tip of the shaped member, and a pair of specific support portions are provided at both end portions of the contact member positioning member, between the measuring apparatus main body and the intermediate support body. A first cylinder mechanism is interposed, and a second cylinder mechanism is interposed between the intermediate support and the deep contact holder,
The intermediate support is moved toward the inner peripheral surface of the tube member by the first cylinder mechanism, and the pair of specific support portions of the contact angle positioning member is the inner peripheral surface of the tube member or the tube member. When contacting the lining layer, the measurement surface of the probe is positioned so as to be substantially parallel to the direction of the inner circle tangent at the measurement site, and in this state, the depth sensor is used by the second cylinder mechanism. When the holder is moved toward the inner peripheral surface of the tube member, the deep touch holder is moved in a direction substantially perpendicular to an inner circle tangential direction at the measurement site , and the deep touch holder The tip is in contact with or pressed against the measurement site.

In the apparatus for measuring the thickness of the pipe or the inner surface of the lining layer according to claim 2 of the present invention, the distal end portion of the probe holder is directed from the measurement surface of the probe toward the measurement site. The contact medium supply means supplies the contact medium to the medium space, and the measurement surface of the probe passes through the contact medium filled in the medium space. It is characterized by being in contact with or pressure contact with the surface.

In the apparatus for measuring the thickness of the pipe or the inner surface of the lining layer according to claim 3 of the present invention, the contact medium from the contact medium supply means is supplied during the measurement by the probe, and the probe When the tip of the child holder is in contact with or pressed against the measurement site, the state of staying and filling in the medium space is maintained, and by maintaining this state of filling, the bubbles in the contact medium disappear. It is characterized by that.
In the apparatus for measuring the thickness of the pipe or the inner surface of the lining layer according to claim 4 of the present invention, the contact medium supply means includes first contact medium supply means for supplying a low-pressure contact medium, A second contact medium supply means for supplying a high-pressure contact medium, and when measuring the thickness of the tube member or the thickness of the lining layer of the tube member, the first contact When the contact medium from the medium supply means is supplied to the medium space and the inner peripheral surface of the pipe member or the surface of the lining layer of the pipe member is cleaned, the contact medium from the second contact medium supply means Is supplied to the medium space.
In the apparatus for measuring the thickness of the pipe or the inner surface of the lining layer according to claim 5 of the present invention, the contact medium supply means includes first contact medium supply means for supplying a low-pressure contact medium ; And a second contact medium supply means for supplying a high-pressure contact medium, and in relation to the sensor means, cleans the inner peripheral surface of the pipe member or the surface of the lining layer of the pipe member. When the thickness of the tube member or the thickness of the lining layer of the tube member is measured, the contact medium from the first contact medium supply means enters the medium space. When the inner peripheral surface of the pipe member or the surface of the lining layer of the pipe member is cleaned, the contact medium from the second contact medium supply means is supplied to the cleaning nozzle. To do.

According to the apparatus for measuring the thickness of the lining layer on the pipe or the inner surface of the pipe according to claim 1 of the present invention, for measuring the thickness of the pipe member or the thickness of the lining layer applied to the inner peripheral surface of the pipe member. A probe is used as the sensor means. The probe is attached to the probe holder, the contact medium from the contact medium supply means is supplied between the probe and the measurement site, and the ultrasonic wave from the probe is propagated through the contact medium. Probe positioning means for positioning the probe at a predetermined position at the time of measurement is provided, and this probe positioning means is an intermediate support body that is pivotably mounted on the measuring apparatus main body about the pivot axis. The intermediate support includes a cylindrical member that supports the deep contact holder movably in the direction of approaching and separating from the inner peripheral surface of the tube member, and a contact angle positioning attached to the distal end portion of the cylindrical member. And a pair of specific support portions are provided at both end portions of the contact member positioning member, and a first cylinder mechanism is interposed between the measuring device main body and the intermediate support member, and the intermediate support member and the deep touch element are provided. A second cylinder mechanism is interposed between the holder and the holder. When the intermediate support is moved toward the inner peripheral surface of the tube member by the first cylinder mechanism and one of the specific support portions comes into contact with the inner peripheral surface of the tube member or the lining layer of the tube member, the intermediate support is When the probe is swiveled about the swivel axis and the pair of specific support portions contact the inner peripheral surface of the tube member or the lining layer of the tube member, the measurement surface of the probe is substantially in the direction of the inner tangent line at the measurement site. Positioned to be parallel. In such a state, when the deep contact holder is further moved toward the inner peripheral surface of the pipe member by the second cylinder mechanism, the deep contact holder is substantially moved with respect to the inner circle tangential direction at the measurement site. The probe is moved in the vertical direction, and its tip is brought into contact with or pressed against the measurement site, so that the measurement surface of the probe and the measurement site can be accurately positioned in a predetermined positional relationship. The thickness (or the thickness of the pipe member) can be accurately measured.

According to the thickness measuring device of the pipe or the inner surface of the lining layer according to claim 2 of the present invention, a medium space is provided at the tip of the probe holder, and the contact medium from the contact medium supply means Is supplied to the medium space, the inside of the contact space is filled with the contact medium, and the measurement surface of the probe is brought into contact or pressure contact with the surface of the measurement site via the contact medium.

In the apparatus for measuring the thickness of the pipe or the lining layer on the inner surface of the pipe according to claim 3 of the present invention, the contact medium from the contact medium supply means is supplied during the measurement by the contactor. Is always filled with the contact medium, that is, it is filled, and by maintaining this full state, the bubbles in the contact medium disappear, and as a result, there is no adverse effect of the bubbles and the measurement is accurate. Can do.
According to the apparatus for measuring the thickness of the pipe or the inner surface of the lining layer according to claim 4 of the present invention, the contact medium supply means includes a first contact medium supply means for supplying a low-pressure contact medium, Second contact medium supply means for supplying a high-pressure contact medium. When cleaning the lining layer (or the inner peripheral surface of the pipe member) (the measurement site), the high-pressure contact medium from the second contact medium supply means is supplied to the medium space, and the lining layer is thus supplied by the supplied contact medium. (Or the inner peripheral surface of the affected part agent) (region in the measurement hole) can be cleaned as required. Further, when measuring the thickness of the lining layer (or the thickness of the pipe member), the contact medium from the first contact medium supply means is supplied to the medium space, and the supplied contact medium is low-pressure mixed with bubbles. By filling the medium space with such a contact medium, the thickness of the lining layer (or the thickness of the pipe member) can be accurately measured without the influence of bubbles.
According to the thickness measuring device for the pipe or the inner surface of the lining layer according to claim 5 of the present invention, the contact medium supply means includes a first contact medium supply means for supplying a low-pressure contact medium, A second contact medium supply means for supplying a high-pressure contact medium is provided, and a cleaning nozzle for cleaning is further provided. When cleaning the lining layer (or the inner peripheral surface of the pipe member), the high-pressure contact medium from the second contact medium supply means is supplied to the cleaning nozzle, and the lining layer (or pipe is changed by the contact medium ejected from the cleaning nozzle. The inner peripheral surface of the member is cleaned. Further, when measuring the thickness of the lining layer (or the thickness of the pipe member), the contact medium from the first contact medium supply means is supplied to the medium space, and the supplied contact medium is mixed with bubbles at a low pressure. By filling the medium space with such a contact medium and retaining it, bubbles in the contact medium disappear, and as a result, the thickness of the lining layer (or the thickness of the pipe member) can be accurately set. Can be measured.

Hereinafter, the best mode of a measuring apparatus according to the present invention will be described with reference to the accompanying drawings.
First, the thickness measuring apparatus according to the first embodiment will be described with reference to FIGS. FIG. 1 is a side view showing a traveling carriage equipped with the thickness measuring apparatus of the first embodiment, FIG. 2 is a front view showing the traveling carriage of FIG. 1, and FIG. 3 is shown in FIG. FIG. 4 is a cross-sectional view showing a part of the thickness measuring device installed in the traveling carriage, and FIG. 4 is a cross-sectional view showing the thickness measuring device of FIG. 3 as viewed from line IV-IV in FIG. FIG. 5 is a cross-sectional view corresponding to FIG. 3 showing a state in which the tip of the sensor holder is in contact with the measurement part of the lining layer, and FIG. 6 is a diagram in which the tip of the sensor holder is in contact with the tip of the lining layer. 4 is a cross-sectional view corresponding to FIG. 4, FIG. 7 is a perspective view showing a part of the intermediate support in the thickness measuring apparatus of FIG. 3, and FIG. 8 is a diagram showing the thickness of the lining layer. FIG. 9 is a simplified explanatory diagram for explaining the movement when measuring, and FIG. It is a perspective view showing the antennal degree determining member.

  1 and 2, the illustrated thickness measuring device 2 is for measuring the thickness of the lining layer applied to the pipe member, but not only the thickness of the lining layer but also the thickness of the pipe member. It can also be applied to the measurement. In this embodiment, the thickness measuring device 2 is provided at the tip of the traveling carriage 4. The traveling carriage 4 includes a carriage body 6, and a wheel body 10 composed of a pair of left and right wheels 8 is spaced in the front-rear direction (the left-right direction in FIG. 1 and the direction perpendicular to the paper in FIG. 2) at the bottom of the traveling carriage 6. 5 are installed. The number of the wheel bodies 10 can be appropriately set according to the size of the cart body 6. Moreover, the inside of the pipe member 12 can be self-propelled by using at least one of these wheel bodies 10 for driving driving. Each wheel 8 is formed in a substantially conical shape, and the conical circumferential surface is provided with uneven ridges extending radially. As shown in FIG. 2, the conical surface of each wheel 8 is formed on the inner circumferential surface of the pipe member 12. As the wheels 8 are supported so as to come into contact with each other and turn in a predetermined direction, the traveling carriage 4 moves in the axial direction of the pipe member 12 (direction perpendicular to the paper surface in FIG. 2).

  A main body housing 14 is provided at the front portion of the cart body 6, and a controller for performing various controls, a driving means for traveling, various signal circuits (none of which are shown) are incorporated in the main body housing 14. ing. A carriage holding member 16 is disposed at the rear of the traveling carriage 4. The upper surface of the carriage holding member 16 is formed in an arc shape corresponding to the shape of the inner peripheral surface of the pipe member 16, and a movement preventing cylinder mechanism 18 (for example, between the base of the carriage holding member 16 and the carriage body 6) Interposing a pneumatic cylinder mechanism). In this embodiment, the cylinder side of the movement preventing cylinder mechanism 18 is fixed to the carriage main body 6, and the carriage holding member 16 is attached to the rod side thereof. In a state where the rod of the cylinder mechanism 18 is contracted, the carriage holding member 16 is held at the non-operating position retracted from the inner peripheral surface of the pipe member 12 as shown by the solid line in FIGS. Does not act on the inner peripheral surface of the pipe member 12. On the other hand, when the rod of the cylinder mechanism 18 is extended, the carriage holding member 16 is lifted as shown by the arrow (see FIG. 1) due to the extension, and is positioned at the operation position indicated by the two-dot chain line in FIGS. In this operation position, the carriage holding member 16 acts on the inner peripheral surface of the pipe member 12, and the plurality of wheel bodies 10 and the carriage holding member 16 are pressed against the inner peripheral surface, whereby the traveling carriage 4 is moved to its position. The movement is reliably prevented. When the thickness of the lining layer on the inner peripheral surface of the pipe member 12 is measured as will be described later, the movement preventing cylinder mechanism 18 is extended, and the traveling carriage 4 is held at the measurement position.

  Next, referring to FIG. 3 and FIG. 4 together with FIG. 1 and FIG. 2, the thickness measuring device 2 provided in the front part of the traveling carriage 4 will be described. The illustrated thickness measuring device 2 is a measuring device. A main body 22, an intermediate support 24, and a sensor holder 26 (functioning as a probe holder) are provided. A connecting portion 28 is provided at one end of the measuring device main body 22, and a connecting portion 32 is provided at the distal end portion of the output portion 30 extending from the angular position setting means in the traveling carriage 4. The measuring device main body 22 is attached to the traveling carriage 4 in this way. The angle setting means (not shown) sets the angular position of the output unit 30. By setting the angular position of the output unit 30 to a predetermined angular position, the measuring device body 2 is set to this angular position. Therefore, the thickness at a predetermined angular position in the lining layer applied to the pipe member 12 can be measured. For example, when this angle setting means sets the lowest part, the middle horizontal part, and the highest part at intervals of 90 degrees, the thickness at these angular positions can be measured.

  The intermediate support 24 includes a hollow cylindrical tubular member 36 and a contact angle determining member 38 attached to the distal end portion of the tubular member 36, and the inner peripheral surface of the pipe member 12 (that is, applied thereto). An axial line extending in the direction of approaching and separating toward the lining layer 40 (see FIG. 6) and extending in the axial direction of the pipe member 12 (the left-right direction in FIG. 3 and the direction perpendicular to the paper in FIG. 4). It is supported by the measuring apparatus main body 22 so as to be rotatable as a turning axis. In this embodiment, a pair of first cylinder mechanisms 42 (for example, composed of a pneumatic cylinder mechanism) are interposed between the measurement apparatus main body 22 and the intermediate support 24, and one first cylinder mechanism 42 is provided. (The one on the left side in FIG. 3) is disposed on the front side in the traveling direction of the traveling carriage 4, and the other first cylinder mechanism 42 (the one on the right side in FIG. 3) is disposed on the rear side in the traveling direction. The cylinder 43 side of each first cylinder mechanism 42 is fixed to the mounting plate portion 37 of the measuring apparatus main body 22 by a fixing nut 44, the connecting member 48 is screwed to the output rod 46 side, and the cylinder of the intermediate support body 24. A pair of connecting pins 50 are fixed to the shaped member 36, and each connecting member 48 is pivotally connected to the connecting pin 50. Thus, as shown in FIG. 3, the pair of connecting pins 50 extends in the axial direction of the tube member 12 on which the traveling carriage 4 travels, and constitutes a pivot axis with respect to the measuring device main body 22. Then, when the pair of first cylinder mechanisms 42 expands (or contracts), the intermediate support 24 moves in a direction close to (or away from) the inner peripheral surface of the tube member 12, and will be described later. Thus, it is possible to turn around the turning axis. As for the first cylinder mechanism 42, the output rod 46 side may be connected to the measuring apparatus main body 22, and the cylinder 43 side may be connected to the intermediate support 24 as required.

  The contact angle determining member 38 of the intermediate support 24 is fixed to the distal end portion of the cylindrical member 36 by a pair of fixing pins 52 (see FIG. 3). The contact angle determining member 38 is configured as shown in FIG. 7, and a pair of shaft members 52 and 54 are fixed to both end portions thereof, that is, both side end portions around the turning axis, and both end portions of these shaft members 52 and 54 are fixed. Contact rollers 56 and 58 are rotatably mounted. The pair of contact rollers 56 mounted on one shaft member 52 constitutes one specific contact portion of the contact angle determining member 38, and the pair of contact rollers 58 mounted on the other shaft member 54 is contact angle determining member 38. The other specific contact part of this is comprised. In this embodiment, the specific contact portion is constituted by a pair of short contact rollers 56, 58. However, instead of such a configuration, for example, the specific contact portion may be constituted by one elongated contact roller. Alternatively, for example, hemispherical contact protrusions may be provided at both end portions of the contact angle determining member 38, and the specific contact portions may be configured by the contact protrusions.

  The sensor holder 26 includes a holder main body 60, an inner cover member 62, and an elastic outer cover member 64 and covers the sensor means 66. The sensor means 66 has a substantially cylindrical outer shape, a holder main body 60 is attached to the base thereof, an inner cover member 62 is attached to the tip of the sensor means 66, and an elastic outer cover is provided so as to cover the inner cover member 62. A member 64 is attached. The elastic outer cover member 64 is formed of a soft material having some elasticity, such as synthetic rubber, and is formed of such a material, so that the lining layer 40 is measured when measuring the thickness of the lining layer 40 as described later. It will not hurt.

  The sensor means 66 is composed of, for example, an ultrasonic sensor, and is preferably composed of a probe. The probe may be a well-known probe, and includes a transmitting transducer that transmits ultrasonic waves and a receiving transducer that receives ultrasonic waves, and the ultrasonic waves from the transmitting transducer are transmitted to the measurement site (lining layer). 40 measurement parts), and the reflected ultrasonic waves from the measurement parts are received by the transmission vibrator and the reception vibrator. More specifically, when measuring the film thickness of the lining layer 40 (or the thickness of the tube member 12), the ultrasonic waves from the transmitting vibrator are transmitted toward the measurement site, but the surface of the lining layer 40 ( Alternatively, the first reflected ultrasonic wave reflected from the inner peripheral surface of the tube member 12 is received by the transmitting transducer, and the second reflected ultrasonic wave reflected from the back surface of the lining layer 40 (the outer peripheral surface of the tube member 12) is Received by the receiving transducer. The probe is transmitted from the transmitting transducer to the surface of the lining layer 40 and then propagated through the first propagation path that is reflected and returns to the transmitting transducer, and from the transmitting transducer to the lining layer 40. A lining layer based on a propagation time difference from a second propagation time that is propagated through a second propagation path that passes through (or the pipe member 12) and reaches the back surface (or outer peripheral surface) and then returns to the receiving vibrator. The thickness of 40 (or pipe member 12) is measured.

  In this embodiment, the sensor holder 26 is disposed in the cylindrical member 36 of the intermediate support 24, and the longitudinal direction of the sensor holder 26 is attached to the sleeve member 68 provided on the inner peripheral surface of the rear end portion of the cylindrical member 36. The intermediate portion (in this embodiment, the distal end portion of the holder main body 60) is movably supported. Therefore, the sensor holder 26 is guided by the sleeve member 68 to be guided to the inner peripheral surface of the pipe member 12 (that is, the inner peripheral surface). A lining layer 40) provided on the surface is supported so as to be movable toward and away from the lining layer 40).

  Between the intermediate support 24 and the sensor holder 26, a pair of second cylinder mechanisms 70 (for example, constituted by a pneumatic cylinder mechanism) for moving the sensor holder 26 with respect to the intermediate support 24 are provided. One of the second cylinder mechanisms 70 (the left side in FIG. 4) is disposed on the right side of the traveling carriage 4 and the other second cylinder mechanism 70 (the one on the right side in FIG. 4) is disposed on the traveling carriage 4. It is arranged on the left side of. In this embodiment, the connection plate 72 is fixed to the outer peripheral surface of the rear end portion of the cylindrical member 36 of the intermediate support 24, and the operation connection plate 74 is fixed to the outer peripheral surface of the rear end portion of the holder body 60 of the sensor holder 26. The cylinder 76 side of the pair of second cylinder mechanisms 70 is fixed to the operation connection plate 74 by a fixing nut 80, and the rod 82 side is connected to the connection plate 74 by a pair of connection nuts 84. With this configuration, when the pair of second cylinder mechanisms 70 contracts (or expands), the operation connection plate 74 pushes the sensor holder 26 upward in FIG. It moves in the direction of approaching (or separating) the 12 inner peripheral surfaces (the measurement site). Regarding the second cylinder mechanism 70, the cylinder 76 side may be connected to the connection plate 74 and the rod 82 side may be connected to the operation connection plate 74. With this configuration, the intermediate support 26, the first cylinder mechanism 42, and the second cylinder mechanism 70 are sensor positioning means for positioning the sensor means 66 at a predetermined position with respect to the measurement site of the lining layer 40. (Functions as a probe positioning means).

  In this embodiment, the front end portion of the sensor holder 26 protrudes from the cylindrical member 36 of the intermediate support 24 toward the front end side, and a measurement hole 86 is provided in the protrusion portion, and the measurement hole 86 is a cylindrical medium space. Is specified. The measurement hole 86 is provided corresponding to the measurement surface (a part for transmitting and receiving ultrasonic waves) of the sensor means 66, and is provided through the distal end wall of the inner cover member 62 and the distal end wall of the elastic outer cover member 64. ing. A communication hole 88 that communicates with the measurement hole 86 is provided on the peripheral side wall at the tip of the sensor holder 26, and the communication hole 88 is also provided through the inner cover member 62 and the elastic outer cover member 64. The communication hole 88 is provided with a water supply nozzle 90 as a contact medium supply nozzle. The water supply nozzle 90 is connected to a water supply means (not shown) such as a water supply pump (contact) via a water supply tube 92. Constituting medium supply means). Accordingly, water as a contact medium from the water supply source is supplied to the measurement hole 88 through the water supply tube 92. Note that a water-soluble liquid may be used as the contact medium instead of water.

  It is desirable to supply water by the supply means as follows. As will be described later, when measuring the thickness of the lining layer 40, water is supplied from the water supply means from the time when the sensor means 66 is set to the measurement position to the time of measurement. It is desirable that the supply pressure of water from the means is always applied. That is, until the sensor holder 26 is moved toward the lining layer 40 and is brought into contact with or pressed against the surface, the water from the water supply means flows out of the measurement hole 88, and thus the water is flowed out. The surface of the measurement site of the layer can be cleaned to some extent, and the inside of the measurement hole 8 of the sensor holder 26 can be filled with water. During measurement, the tip of the sensor holder 26 is in contact with or pressed against the lining layer 40, so that the water flow from the water supply means stops and stays, and the measurement hole 88 is filled with water and supplied. The pressure is constantly maintained, and the measurement surface of the sensor means 66 is brought into contact or pressure contact with the measurement site via water (contact medium) filled in the measurement hole 88. Therefore, the inside of the measurement hole 88 is filled with a predetermined thickness of water, and the flow of water (bubbles mixed therein) in the measurement hole 88 is eliminated, thereby eliminating the bubbles mixed in the water. The thickness of the lining layer 40 can be accurately measured without the influence of bubbles.

  Next, the thickness measurement of the lining layer 40 applied to the inner peripheral surface of the pipe member 12 will be described. 8 together with FIG. 1, FIG. 3 and FIG. 4, when measuring the thickness, first, the traveling carriage 4 is brought into the pipe member 12 and the lining layer 40 in which the construction work of the lining material is performed is measured. It travels to a place and is held at that position. And the measurement angle position of the lining layer 40 is set, and the sensor means 66 is set so that it may become a predetermined positional relationship with respect to the lining layer 40 as follows.

  Referring mainly to FIG. 8, when the traveling carriage 4 is positioned at a predetermined position and is positioned at the measurement angle position of the lining layer 40, the thickness measuring device 2 is, for example, in the state shown in FIG. Also, it is assumed that the tube member 12 (in other words, the lining layer 40) is located somewhat above the center. In this state, when the pair of first cylinder mechanisms 42 are extended, as shown in FIG. 8B, the intermediate support 24 (the sensor holder 26 and the sensor attached thereto) 8 (b) is moved to the left in the direction approaching the lining layer 40, and one contact roller 56 (contact roller located on the upper side) mounted on the intermediate support 24 is moved to the lining layer 40. It comes in contact with the inner peripheral surface. When the pair of cylinder mechanisms 42 further expands from this state, the one contact roller 56 comes into contact with the lining layer 40 and is prevented from moving, so the direction indicated by the arrow 100 about the pivot axis (the pair of connecting pins 50). The contact rollers 56 and 58 at both ends of the intermediate support 24 come into contact with the inner peripheral surface of the lining layer 40 as shown in FIG. Thus, the intermediate support 24 is held in a predetermined positional relationship with respect to the lining layer 40 (when the contact rollers 56 and 58 are thus brought into contact with or pressed against the lining layer 40, the first cylinder mechanism 42 is extended). In this state, the center line of the sensor means 66 is substantially perpendicular to the arcuate surface of the measurement part of the lining layer 40, that is, the inner tangent line of the measurement part.

  Next, the pair of second cylinder mechanisms 70 are contracted. Thus, as shown in FIG. 8D, the sensor holder 26 (the sensor means 66 attached thereto) moves in the direction close to the measurement site of the lining layer 40 via the operation connecting plate 74, and the sensor holder The front end portion of 26 (that is, the front end surface of the elastic outer cover member 64) is brought into contact with or pressed against the lining layer 40. At this time, since the sensor holder 26 moves in a direction substantially perpendicular to the inner circle tangential direction of the measurement portion of the lining layer 40 and is contacted or pressed, the sensor means 66 moves the intermediate support 24 and the sensor holder 26 together. In this holding state, the measurement surface of the sensor means 66 is kept substantially parallel to the inner circle tangent line of the measurement site (see FIG. (See also 6).

  After the sensor means 66 is set in this way, ultrasonic waves are transmitted from the sensor means 66 toward the measurement site of the lining layer 40, reflected ultrasonic waves from this measurement site are received, and this received signal is transmitted as required. Then, the thickness of the lining layer 40 is measured. Even if the thickness measuring device 2 is somewhat deviated from the center line of the pipe member 12, the tip of the sensor holder 26 can be held in contact with or pressed substantially perpendicularly to the measurement site, whereby the sensor means 66 can be held. It can be held in a predetermined positional relationship with respect to the measurement site, and its thickness can be accurately measured. In contrast to the above, when the thickness measuring device 2 is located somewhat below the center of the pipe member 12 (in other words, the lining layer 40), the intermediate support 24 is opposed to the above. The other contact roller 58 contacts the lining layer 40, and then the intermediate support 24 pivots downward (that is, in the direction opposite to the direction indicated by the arrow 100) about the pivot axis, so that both contact rollers 56 and 58 are lining. The layer 40 comes into contact with or is pressed.

  In the first embodiment described above, water as a liquid is supplied at the time of thickness measurement, and the measurement hole of the sensor holder is filled with water. In this measurement, the surface of the measurement portion of the lining layer is measured. In the case of cleaning, it can be configured as shown in FIG. 9, for example. 9, a measurement hole 86 is provided through the inner cover member 62A and the elastic outer cover member 64A of the sensor holder 26A, and first and second communication holes 102 and 104 communicating with the measurement hole 88 are provided. Is provided. A first supply nozzle 106 is attached to the first communication hole 102, and the first supply nozzle 106 supplies a low-pressure water (contact medium) via a first water supply tube 108. (Not shown) (which constitutes the first contact medium supply means). A second supply nozzle 110 is attached to the second communication hole 104, and the second supply nozzle 110 supplies a second high-pressure water (contact medium) for supplying high-pressure water (contact medium) via the second water supply tube 112. It is connected to a water supply source (not shown) (which constitutes the second contact medium supply means).

  When measuring the thickness of the lining layer, first, high-pressure water is supplied from the second water supply means, and the supplied water is supplied to the measurement hole 86 through the second water supply tube 112 and the second supply nozzle 110. Then, the surface of the measurement site of the lining layer can be washed with the high-pressure water jetted from the measurement hole 86 to the tip side and thus jetted. After cleaning, the supply of water from the second water supply means is stopped, and then low-pressure water from the first water supply means is supplied to the measurement hole 86 through the first water supply tube 108 and the first supply nozzle 106. The measurement hole 86 is filled with water, and the water pressure at this time is low, so that the measurement hole 86 can be filled as required. Thereafter, when the tip of the sensor holder 26A comes into contact with or presses against the lining layer, the flow of water from the first supply means stops and stays, and in this staying state, ultrasonic waves from the sensor means 66 are used. The thickness of the lining layer is measured.

  In FIG. 9, cleaning water (high-pressure water) is ejected from the measurement hole 86 of the sensor holder 26A. Instead of such a configuration, for example, a dedicated cleaning nozzle is attached to the sensor holder, and the second High-pressure water from the water supply means may be supplied to a dedicated nozzle and ejected from the cleaning nozzle toward the lining layer 40 of the pipe member 12 for cleaning.

  Next, a second embodiment of the thickness measuring device will be described with reference to FIGS. 10 and 11. FIG. 10 is a cross-sectional view showing a partial cross section of the thickness measuring apparatus according to the second embodiment, FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. 10, and FIG. It is a simplified explanatory view for explaining a movement when measuring the thickness of a lining layer using the thickness measuring device. In the second embodiment, the support structure for the intermediate support and the support structure for the sensor holder are improved. In addition, the same reference number is attached | subjected to the member substantially the same as 1st Embodiment, and the description is abbreviate | omitted.

  10 and 11, in the second embodiment, the measuring device main body 22A attached to the traveling carriage 4 is formed in a substantially rectangular block shape, and a pair of support rods are spaced from the measuring device main body 22A. 112 (only one is shown in FIG. 10) is supported so as to be movable in the vertical direction. A movable member 114 is attached to the pair of support rods 112, and a pivot support shaft 116 (a central axis of which constitutes a pivot axis extending in the axial direction of the pipe member) is pivotally supported by the movable member 114, and is pivotally supported. A cylindrical member 36 </ b> A of the intermediate support 24 </ b> A is fixed to the base portion of the shaft 116. Accordingly, the intermediate support 24A is movable in the direction of approaching and separating from the lining layer 40 (see FIG. 12) on the inner surface of the pipe member via the support rod 112, the moving member 114, and the turning support shaft 116, and the turning support shaft. The measurement apparatus main body 22A is supported by the measurement apparatus main body 22A so as to be rotatable around the center 116.

  The pair of first cylinder mechanisms 42 </ b> A (see FIG. 11) is interposed between the measurement apparatus main body 22 </ b> A and the moving member 114. In this embodiment, the cylinder 43A of the first cylinder mechanism 42A is fixed to the measuring apparatus main body 22A, and the rod 46A side is fixed to the moving member 114. With this configuration, when the first cylinder mechanism 42A expands (or contracts), the intermediate support 24A (the sensor holder 26A and the sensor means attached thereto) is interposed via the moving member 114 and the pivot support shaft 116. 66) is moved in the direction approaching (or separated from) the lining layer 40 of the pipe member, and when one of the contact rollers 56, 58 comes into contact with the lining layer 40, a predetermined direction centering on the turning support shaft 116 (turning axis). Is turned. In addition, about the 1st cylinder mechanism 42A, you may make it fix the cylinder 43A side to the moving member 114, and fix the rod 46A side to the measuring apparatus main body 22A.

  Further, the second cylinder mechanism 70A is integrally combined between the intermediate support 24A and the sensor holder 26a. That is, the cylinder 76A of the second cylinder mechanism 70A is attached to the rear end portion of the cylindrical member 36A of the intermediate support 24A, and the rear end portion of the holder body 60A of the sensor holder 26A extends into the cylinder 76A. On one end side (inner end portion), the space between the cylinder 76A and the holder main body 60A is hermetically closed by the annular closing member 118, and the other end side (outer end portion) of the cylinder 76A is hermetically closed by the closing member 120. The piston 122 is movably accommodated in the cylinder 76A, and a connecting tubular member 121 is attached to the rear end portion of the holder body 60A. One end side of the connecting tubular member 121 penetrates the piston 122 and the closing member 120. The lead wire 126 from the sensor means 66 is led out through the connecting tubular member 121. The piston 122 of the second cylinder mechanism 70A is attached to the connecting tubular member 121 by a mounting nut 124, and moves integrally with the sensor holder 26A (sensor means 66 attached thereto). The holder body 60A is movably supported by the cylindrical member 36A of the intermediate support 24A.

  A first supply part 132 is provided at one end of the cylinder 76A of the second cylinder mechanism 70A, and a second supply part 134 is provided at the other end. When compressed air is introduced through the second supply part 134 (or the first supply part 132), the piston 122 of the second cylinder mechanism 70A moves upward (or downward) in FIGS. The sensor holder 26A is moved as required with respect to the intermediate support 24A. By configuring the second cylinder mechanism 70A in this way, the sensor holder 26A can be moved with respect to the intermediate support 24A with a single cylinder mechanism 70A. Since it is configured in this way, the moving member 114, the intermediate support 24A, the first cylinder mechanism 42A, and the second cylinder mechanism 70A constitute sensor positioning means (functioning as probe positioning means). Other configurations in the second embodiment are substantially the same as those in the first embodiment.

  Referring mainly to FIG. 12, the outline of the thickness measurement of the lining layer 40 using the thickness measuring apparatus 2A will be described. When the thickness measurement is performed, the traveling carriage is connected to the pipe member in the same manner as described above. Bring it in and move it to the measurement point of the lining layer 40 of the pipe member, set the measurement angle position of the lining layer 40, and then set the predetermined positional relationship with the lining layer 40 as follows. The sensor means 66 is set. When the traveling carriage is positioned at a predetermined position and positioned at the measurement angle position of the lining layer 40, the thickness measuring device 2A is, for example, in the state shown in FIG. It is assumed that the state is located somewhat above the center. In this state, when the pair of first cylinder mechanisms 42A are extended, as shown in FIG. 12B, the support rod 112, the moving member 114, and the intermediate support 24A (to this) The mounted sensor holder 26A and sensor means 66) are moved to the left in the direction approaching the lining layer 40 in FIG. 12B, and one contact roller 56 mounted on the intermediate support 24A (located on the upper side). The contact roller) comes into contact with the inner peripheral surface of the lining layer 40. When the pair of cylinder mechanisms 42A further expands from this state, one of the contact rollers 56 comes into contact with the lining layer 40 and is prevented from moving, and therefore, in the direction indicated by the arrow 100 around the turning axis (the turning support shaft 116). As shown in FIG. 12C, the contact rollers 56 and 58 at both ends of the intermediate support 24A come into contact with the inner peripheral surface of the lining layer 40, as shown in FIG. Thus, the intermediate support 24A is held in a predetermined positional relationship with respect to the lining layer 40 (when the contact rollers 56 and 58 are thus contacted or pressed against the lining layer 40, the first cylinder mechanism 42A is expanded). In this state, the center line of the sensor means 66 is substantially perpendicular to the arcuate surface of the measurement portion of the lining layer 40, that is, the inner tangent line.

  Next, the second cylinder mechanism 70A is expanded (compressed air is supplied to the second supply unit 134). Then, as shown in FIG. 12D, the sensor holder 26A (the sensor means 66 attached thereto) moves in the direction close to the measurement site of the lining layer 40, and the tip of the sensor holder 26A (ie, the sensor holder 66A). The tip surface of the elastic outer cover member 64 is contacted or pressed against the lining layer 40. At this time, since the sensor holder 26A is moved and contacted or pressed in a direction substantially perpendicular to the inner circle tangent of the measurement portion of the lining layer 40, the sensor means 66 is interposed via the intermediate support 24A and the sensor holder 26A. In this holding state, the measurement surface of the sensor means 66 is maintained in a state substantially parallel to the inner circle tangent line at the measurement site.

  As described above, also in the thickness measuring apparatus according to the second embodiment, the sensor means 66 can be held in a predetermined positional relationship with respect to the lining layer 40 of the pipe member as in the first embodiment described above. Thus, the thickness of the lining layer 40 can be accurately measured. In addition, the number of second cylinder mechanisms 70A can be reduced, whereby the thickness measuring device 2A can be simplified in configuration and the size of the device can be reduced.

  As mentioned above, although embodiment of the thickness measuring apparatus according to this invention was described, this invention is not limited to this embodiment, A various deformation | transformation thru | or correction | amendment are possible without deviating from the scope of the present invention.

  For example, in the illustrated embodiment, the measurement apparatus main body 22 (22A) is applied to a configuration in which the traveling carriage 4 is equipped. However, the embodiment is not limited to such a configuration and is installed in the pipe member 12. The present invention can be similarly applied to a measurement form.

  When pipe members such as sewage pipes and water pipes are corroded, a lining material is applied to the inner peripheral surface of the pipe member and the inner peripheral surface is covered with a lining layer. By using this thickness measuring device, The thickness of the lining layer applied to can be accurately measured. Therefore, it can be used for construction confirmation and construction inspection of the construction work of the lining material.

It is a side view which shows the traveling trolley equipped with the thickness measuring apparatus of 1st Embodiment. It is a front view which shows the traveling trolley | bogie of FIG. It is sectional drawing which shows the thickness measuring apparatus with which the traveling trolley shown in FIG. 1 was equipped with a partial cross section. It is sectional drawing which shows the place which looked at the thickness measuring apparatus of FIG. 3 from the IV-IV line in FIG. It is sectional drawing corresponding to FIG. 3 which shows the state which the front-end | tip part of the sensor holder contacted the measurement part of the lining layer. It is sectional drawing corresponding to FIG. 4 which shows the state which the front-end | tip part of the sensor holder contacted the front-end | tip part of a lining layer. It is a perspective view which shows a part of intermediate support body in the thickness measuring apparatus of FIG. It is a simple explanatory view for explaining movement when measuring the thickness of a lining layer. It is sectional drawing which shows the modification of a sensor holder and the structure relevant to it. It is sectional drawing which shows the thickness measuring apparatus of 2nd Embodiment in a partial cross section. It is sectional drawing which shows the place which looked at the thickness measuring apparatus of FIG. 10 from the XI-XI line in FIG. FIG. 11 is a simplified explanatory diagram for explaining the movement when measuring the thickness of the lining layer using the thickness measuring apparatus of FIG. 10.

Explanation of symbols

2, 2A Thickness measuring device 4 Traveling carriage 22, 22A Measuring device main body 24, 24A Intermediate support 26, 26A Sensor holder 36, 36A Tubular member 38 Contact angle determining member 42, 42A First cylinder mechanism 50 Connecting pin ( Swivel axis)
56, 58 Contact roller 60 Holder body 64 Elastic outer cover member 70, 70A Second cylinder mechanism 86 Measurement hole 90 Water supply nozzle 114 Moving member 116 Pivot support shaft 122 Piston

Claims (5)

In order to transmit ultrasonic waves toward the measurement site and receive reflected ultrasonic waves from the measurement site in order to measure the thickness of the tube member or the thickness of the lining layer applied to the inner peripheral surface of the tube member A probe holder for holding the probe, and a contact medium supply means for supplying a contact medium between a measurement surface of the probe and the measurement site. A first propagation path transmitted from the probe and returned from the inner peripheral surface of the tube member or the surface of the lining layer to the probe, and the outer peripheral surface of the tube member transmitted from the probe or the A tube or tube inner surface that measures the wall thickness of the tube member or the thickness of the lining layer applied to the inner peripheral surface thereof based on the propagation time difference from the back surface of the lining layer to the second propagation path returning to the probe In the lining layer thickness measuring device,
A deep contact positioning means for bringing the deep contact holder into contact or pressure contact with the measurement site is provided, and the deep contact positioning means is attached to the measurement apparatus main body around a turning axis extending in the axial direction of the tube member. A cylindrical member that rotatably supports an intermediate support , the intermediate support movably supporting the deep contact holder in a direction approaching and separating from the inner peripheral surface of the tube member; A contact angle positioning member attached to the tip of the shaped member, and a pair of specific support portions are provided at both end portions of the contact member positioning member, between the measuring apparatus main body and the intermediate support body. A first cylinder mechanism is interposed, and a second cylinder mechanism is interposed between the intermediate support and the deep contact holder,
The intermediate support is moved toward the inner peripheral surface of the tube member by the first cylinder mechanism, and the pair of specific support portions of the contact angle positioning member is the inner peripheral surface of the tube member or the tube member. When contacting the lining layer, the measurement surface of the probe is positioned so as to be substantially parallel to the direction of the inner circle tangent at the measurement site, and in this state, the depth sensor is used by the second cylinder mechanism. When the holder is moved toward the inner peripheral surface of the tube member, the deep touch holder is moved in a direction substantially perpendicular to an inner circle tangential direction at the measurement site , and the deep touch holder An apparatus for measuring the thickness of a pipe or a lining layer on the inner surface of the pipe, wherein the tip is in contact with or pressed against the measurement site.   A medium space extending from the measurement surface of the probe toward the measurement site is provided at a distal end portion of the probe holder, and the contact medium supply unit supplies a contact medium to the medium space. The pipe or the lining layer of the pipe inner surface according to claim 1, wherein the measurement surface of the probe is in contact with or pressed against the surface of the measurement site via a contact medium filled in the medium space. Thickness measuring device.   The contact medium from the contact medium supply means is supplied during measurement by the probe, and the tip of the probe holder stays in and fills the medium space by contacting or press-contacting the measurement site. 3. The apparatus for measuring a thickness of a pipe or a lining layer on the inner surface of the pipe according to claim 2, wherein the air bubble in the contact medium is extinguished by maintaining the filled state and maintaining the filled state. The contact medium supply means includes a first contact medium supply means for supplying a low-pressure contact medium and a second contact medium supply means for supplying a high-pressure contact medium. When measuring the thickness of the member or the thickness of the lining layer of the tube member, the contact medium from the first contact medium supply means is supplied to the medium space, and the inner peripheral surface of the tube member or the The lining of the pipe or pipe inner surface according to claim 1, wherein when cleaning the surface of the lining layer of the pipe member, the contact medium from the second contact medium supply means is supplied to the medium space. Layer thickness measuring device. The contact medium supply means includes a first contact medium supply means for supplying a low-pressure contact medium and a second contact medium supply means for supplying a high-pressure contact medium. Relatedly, a cleaning nozzle for cleaning the inner peripheral surface of the tube member or the surface of the lining layer of the tube member is provided, and the thickness of the tube member or the lining layer of the tube member is provided. When measuring the thickness of the tube member, the contact medium from the first contact medium supply means is supplied to the medium space, and the inner peripheral surface of the tube member or the surface of the lining layer of the tube member is cleaned. 2. The apparatus for measuring a thickness of a pipe or a lining layer on an inner surface of the pipe according to claim 1, wherein the contact medium from the second contact medium supply means is supplied to the cleaning nozzle.

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