JP2022072941A - Device for sending out and pulling back flaw detection sensor - Google Patents

Abstract

PURPOSE: To provide a device that sends out and a pulls back a flaw detection sensor, with which it is possible to simplify the entire structure, reduce the size and weight and cut down the cost of the device, and to facilitate the work of device setup, etc., eliminate variation in inspection quality, and reduce burden on workers.CONSTITUTION: Provided is a device for sending out and pulling back a flaw detection sensor, comprising: an air gun for sending out the flaw detection sensor into a hole by air; an air motor driven by air, for pulling back the flaw detection sensor having sent out into the hole from inside the hole in a direction to the air gun (e.g., via a cable attached to the flaw detection sensor); an air supply unit for supplying air for drive to the air gun and the air motor; and a switching supply unit for selectively supplying air from the air supply unit to the air gun or to the air motor.SELECTED DRAWING: Figure 1

Description

The present invention forms holes such as holes in one thin tube (hose, tube, etc.) or holes in a porous tube (see reference numeral 31 in FIG. 14) in which a large number of holes are integrally formed substantially in parallel. A flaw detection sensor is placed in the hole in order to non-destructively detect and inspect the member for damage, cracks, or thinning of the member (for example, scratches on the inner wall surface side portion and the outer wall surface side portion of the hole). The present invention relates to a sending and pulling device of a flaw detection sensor that performs a sending and then pulling operation.

Conventionally, for example, when detecting and inspecting a flaw in a thin tube non-destructively by an eddy current flaw detection method, a eddy current flaw detection sensor is pressure-fed (pressed) into the capillary tube by an air gun, and then to the rear end side of the eddy current flaw detection sensor. There is known a device for pulling the eddy current flaw detection sensor back to its original position before pumping by rewinding the attached cable manually by an operator or by an electric motor (see, for example, Patent Document 1).

FIG. 13A cites a conceptual diagram of a thin tube inspection system using the eddy current flaw detection method disclosed in Patent Document 1 (including a device for pumping the eddy current flaw detection sensor and then pulling it back to the position before pumping). It was done. In the device of Patent Document 1, a probe for eddy current flaw detection (eddy current flaw detection sensor) is inserted into the capillary tube (inside the hole of the capillary tube) to be inspected by the air gun shown in FIG. It is delivered to the opposite end, and then the probe in the hole is driven by an electric motor (specifically, the winch is driven by the electric motor and the cable attached to the probe is wound around the winch). Disclosed is a device for delivering a eddy-current flaw detection probe into a capillary tube and winding a cable so as to be pulled back to a position before delivery.

In this device, the air gun pushes the probe into a thin tube and sends it out by sending compressed air supplied from the outside to an outlet guide through a joint and an air passage. Further, in this device, the electric motor drives the winch to wind up the cable, so that the probe to which the cable is attached is pulled back to the original position before delivery. In the process of pulling the probe back to its original position, the data detected in the probe is sent to the main body of the eddy current flaw detector via a cable and recorded.

Japanese Unexamined Patent Publication No. 11-72482

However, in the conventional vortex flaw detection probe delivery into the capillary tube and cable winding device as shown in FIG. 13, the winch and the cable winding device are driven to pull back the vortex flaw detection probe inserted and delivered into the capillary tube. Since an electric motor, etc. was used, a plurality of heavy equipment / members such as a winch, an electric motor, a controller for an electric motor, a power supply device for an electric motor, and a power cable, which are separate from the air gun, were used. Since it is necessary to move and place it near the thin tube to be inspected, the equipment becomes complicated, heavy and costly, and it requires a large cost and labor to prepare the entire equipment and set it on site. There was a problem that it would take. In addition, conventionally, the operator may manually pull back (pull out) the eddy-current flaw detection probe sent into the capillary tube, but when pulling back by such manual work, pulling back at a constant speed is required. Since it is difficult, there are problems that the inspection quality varies, and that the worker has to repeat the same pulling work for a long time, which puts a heavy physical burden on the worker for a long time.

The problem in the prior art as described above is that the flaw detection sensor is inserted into the hole of one thin tube (tube or the like) as shown in FIG. 13 (a), sent out, and then detected and measured in the process of pulling back. Not only when this is performed, but also holes such as holes 31a of the porous tube 31 in which a large number of holes (for example, a large number of tens to several thousand holes) are integrally formed substantially in parallel as shown in FIG. 14 are formed. The same occurs when a member to be formed is targeted for inspection, a flaw detection sensor is inserted into each hole 31a, the sensor is sent out, and then measurement is performed in the process of pulling back.

Further, the problem in the prior art as described above is not only in the case of performing a non-destructive inspection by the eddy current flaw detection method in the process of sending the eddy current flaw detection sensor into the hole to be inspected and then pulling it back as shown in FIG. The same thing occurs when a non-destructive inspection is performed by transmitting an ultrasonic beam to the inner wall surface side of the hole in the process of sending the ultrasonic inspection sensor into the hole to be inspected and then pulling it back. ..

The present invention has been made by paying attention to such a problem of the prior art, and does not require an electric motor having a large capacity and weight, a controller for the electric motor, a power supply device for the electric motor, a power cable, and the like. As a result, the configuration of the entire device can be significantly simplified, made smaller and lighter, and the cost can be reduced, and the work such as setting the device at the site of non-destructive inspection can be streamlined and facilitated. It is an object of the present invention to provide a device for sending and pulling back a flaw detection sensor, which can eliminate the variation in inspection quality and reduce the physical burden on the operator during inspection.

The flaw detection sensor sending and pulling device according to the present invention for solving the above problems sends the flaw detection sensor into the hole which is the inspection target portion, and then pulls back the flaw detection sensor at a constant speed. An air gun that sends out the flaw detection sensor into the hole by air, and a flaw detection sensor after being sent into the hole (for example, to the flaw detection sensor). An air driven air motor for pulling back from the hole toward the air gun (via an attached cable) and an air supply that commonly supplies driving air to both the air gun and the air motor. It is characterized by including a unit and a switching supply unit that selectively supplies air from the air supply unit to the air gun side or the air motor side.

Further, in the sending and pulling device of the flaw detection sensor according to the present invention, the air motor may be configured together (integrally) with the air gun in a device that can be held by the user.

Further, in the transmission and pullback device of the flaw detection sensor according to the present invention, the switching supply unit supplies the air supplied from the air supply unit side to the air gun side when the first operation is performed by the user, and the user When the second operation is performed by, the air supplied from the air supply unit side is supplied to the air motor side, and when neither the first operation nor the second operation is performed by the user, the air supply unit The air supplied from the side may not be supplied to either the air gun side or the air motor side.

Further, in the flaw detection sensor sending / pulling device according to the present invention, it is a pull-back mechanism for pulling back the flaw detection sensor sent into the hole, and is rotated and rotated by the air motor to form the flaw detection sensor. A first roller for moving or winding the attached cable, a second roller for sandwiching the cable between the first roller, and the second roller for pressing the first roller side. A pull-back mechanism including an air cylinder, which is an air cylinder driven by a part of the air supplied from the air supply unit, may be further provided.

Further, in the flaw detection sensor sending and pulling device according to the present invention, when the flaw detection sensor sent into the hole is pulled back from the hole toward the air gun, the air from the air supply unit is switched and supplied. An air branch portion for branching air supplied only to the air motor side (not supplied to the air gun side) by the unit so as to be simultaneously supplied to both the air motor and the air cylinder is provided. May be good.

In the device for sending and pulling back the flaw detection sensor according to the present invention, the device for sending the flaw detection sensor into the hole and the device for pulling back (pulling out) the flaw detection sensor after being sent to the hole. Both of the devices and the device can be operated by the force of air supplied from the "common air supply unit" via a common hose or the like. Therefore, according to the present invention, "when sending the flaw detection sensor into the hole, the air gun is driven by the air supplied from the air supply unit, and when pulling back the flaw detection sensor sent into the hole, the flaw detection sensor is pulled back. A conventional inspection device in which an electric motor (an electric motor that drives a winch or the like) separate from the air gun is driven by a power supply supplied from the power supply device via a power cable "(see FIG. 13 and the like). Compared to, it eliminates the need for electric motors with large capacity and weight, controllers for electric motors, power supplies for electric motors, power cables, etc. At the same time, it is possible to streamline and facilitate work such as setting of equipment at the site of non-destructive inspection.

Further, conventionally, the work of pulling back the flaw detection sensor in the hole is often performed manually, but as compared with the case of such a conventional manual work, the pulling back of the flaw detection sensor according to the present invention. Is automatically performed at a constant speed by the air motor, so that the variation in inspection quality can be eliminated and the physical burden on the operator during the inspection can be greatly reduced.

Further, in the sending and pulling device of the flaw detection sensor according to the present invention, when the air motor is configured together (integrally) in the same device as the air gun, the whole device according to the present invention is further configured. It can be simplified and reduced in weight, and on-site inspection work can be made more efficient and easy.

Further, in the transmission and pullback device of the flaw detection sensor according to the present invention, the air supplied from the air supply unit (via a hose or the like) is supplied to the air gun side by the switching supply unit, or the air motor. When it is possible to select / switch whether to supply to the side or not to supply to either of the above based on the user's operation, the air from the air supply unit is sent into the hole of the flaw detection sensor. Since it can be commonly switched and used (selectively switched and used) both for sending and for pulling back the flaw detection sensor sent into the hole, the configuration of the entire device is further simplified.・ It will be possible to reduce costs.

Further, in the flaw detection sensor sending / pulling device according to the present invention, when the flaw detection sensor sent into the hole is pulled back, the second roller is moved by an air cylinder driven by air from the air supply unit. When the cable is pressed against the first roller side, the cable of the flaw detection sensor is surely sandwiched between the first roller and the second roller, so that the cable on the flaw detection sensor side Will be reliably moved or wound by the first roller, and the pull-back operation of the flaw detection sensor will be performed more reliably and accurately.

Further, in the flaw detection sensor sending and pulling device according to the present invention, when the flaw detection sensor sent into the hole is pulled back from the hole toward the air gun, the air from the air supply unit is used for switching. The air supplied only to the air motor side by the supply unit (not supplied to the air gun side) may be further supplied to both the air motor and the air cylinder at the same time by the air branching unit. In this case, "Air from the common air supply section is supplied to both the air motor and the air cylinder at almost the same time by the air branch section, and both the air motor and the air cylinder are driven almost at the same time. This makes it possible to realize a simple and inexpensive configuration, which ensures that the cable of the flaw detection sensor is sandwiched between the first and second rollers and is reliably moved by the first roller. As a result of being wound or wound up, the pull-back operation of the flaw detection sensor can be performed reliably and accurately at low cost.

It is a left side view which shows the structure of the sending and pulling back device of the eddy current flaw detection sensor by Embodiment 1 of this invention. It is a right side view which shows the structure of the sending and pulling back device of the eddy current flaw detection sensor by this Embodiment 1. It is a top view which shows the structure of the delivery and pull-back apparatus of the eddy current flaw detection sensor by Embodiment 1. FIG. It is a bottom view which shows the structure of the sending and pulling back device of the eddy current flaw detection sensor by this Embodiment 1. It is a figure which shows the structure when the sending and pulling back device of the eddy current flaw detection sensor by this Embodiment 1 is seen from the back side, the right side in FIG. 5 is the state before attaching the back cover and stopper holder, and the left side in FIG. It is a figure which shows the state after attaching the back cover and stopper holder. It is a figure which shows the structure when the sending and pulling back device of the eddy current flaw detection sensor by this Embodiment 1 is seen from the front side, the right side in FIG. Is a diagram showing a supply trigger of air for pumping an eddy current flaw detection sensor. It is a figure which shows the structure when the sending and pulling-out device of the eddy current flaw detection sensor by this Embodiment 1 is seen from above, and the upper side in FIG. 7 is a figure which shows the state which attached the cover on the eddy current flaw detection sensor cable winding roller. The lower side in FIG. 7 is a diagram showing a state in which the cover is removed. It is a figure which shows the structure of the sending and pulling back device of the eddy current flaw detection sensor by this Embodiment 1, and the right side in FIG. The upper left side and the lower left side of the above are views showing an air cylinder for the eddy current flaw detection sensor cable holding roller and the like. It is a perspective view which shows the structure of the side surface side of the delivery and pull-back apparatus of the eddy current flaw detection sensor by Embodiment 1. FIG. It is a perspective view which shows the structure of the back side of the delivery and pull-back apparatus of the eddy current flaw detection sensor by Embodiment 1. FIG. It is a perspective view which shows the structure of the back side of the delivery and pull-back apparatus of the eddy current flaw detection sensor by Embodiment 1. FIG. It is a perspective view which shows the structure of the back side and the side surface side of the delivery and pull-back device of the eddy current flaw detection sensor by Embodiment 1. FIG. (A) is a conceptual diagram showing a thin tube inspection system (see Patent Document 1) using a conventional eddy current flaw detection method, and (b) is a schematic diagram for explaining an air gun included in the system. It is a perspective view which shows the perforated tube in which a large number of holes are formed in parallel, and the eddy current flaw detection sensor which is about to be sent into one hole in the perforated tube which is the object of inspection by the conventional eddy current flaw detection method.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 12 are views for explaining the configurations of the side surface side, the flat surface side, the bottom surface side, the back surface side, and the front surface side of the eddy current flaw detection sensor according to the embodiment of the present invention. In FIGS. 1 to 12, 1 is an eddy current flaw detection sensor (ET sensor; see FIG. 1 and the like), and 2 is a cable (see FIG. 1 and the like) attached to the eddy current flaw detection sensor 1 (the rear end side of the sensor 1). 3 is a stopper (see FIG. 5 and the like) for preventing even the rear end of the cable 2 from entering the insertion guide 4 (see FIG. 1 and the like) described later. Insertion guide (see FIG. 1 etc.) 5 is for pumping (pressing) the eddy current flaw detection sensor 1 into a hole (see the hole of the capillary tube 2 in FIG. 13 and 31a in FIG. 14) which is a part of the inspection target. Grip (see FIG. 1 etc.) of the air gun (see FIG. 13 (b) etc.) In the air gun, the air from the air supply unit arranged outside the air gun is sent to the air gun side or the air motor and air cylinder described later. A switching supply unit (not shown) for selectively supplying to either side is built-in), and 6 is an air gun (FIG. 13 (b), etc.) when pumping (pressing) the eddy current flaw detection sensor 1. An air supply trigger for supplying air to (see FIG. 1 and the like).

Further, in FIGS. 1 to 12, 7 is an air from the air supply unit (a known device composed of an air compressor, an air tank, etc., which supplies compressed air or the like; not shown) to the air gun side or the air motor 9 described later. (See FIG. 1 and the like) and an air supply hose (see FIG. 1 and the like) for selectively supplying air to the air cylinder 14 (see FIG. 1 and the like) side, 8 is from the air supply unit and the air supply hose 7. The air supply port (the air supply hose 7) for selectively supplying the air to the air gun side or the air motor 9 (see FIG. 1 or the like) side and the air cylinder 14 (see FIG. 1 or the like) side described later. A connected portion; see FIG. 4 and the like), 9 is a cable winding roller 12 and the like (described later, see FIGS. 7 and 8 and the like) for winding the cable 2 in order to pull back the eddy current flaw detection sensor 1 sent into the hole. ) Is an air motor (see FIG. 1 and the like), and 10 is an air supply tube (see FIG. 1 and the like) that supplies air from the air supply unit and the air supply hose 7 to the air motor 9.

Further, in FIGS. 1 to 12, 11 is a regulator that adjusts the rotation speed of the air motor 9 by adjusting the air pressure sent to the air motor 9 (see FIG. 3 and the like), and 12 is the eddy current flaw detection sensor 1. The cable take-up roller (see FIGS. 5, 8, etc., driven by the air motor 9) that winds up the cable 2 when the cable 2 is pulled back from the hole, and 13 is the cable take-up roller that rotates the rotation of the air motor 9. The bevel gear (see FIGS. 3, 8 and the like) for transmitting to 12 and the like, and 14 is the cable holding roller 16 (see FIG. 8 and the like) described later when the cable 2 is wound, in the direction toward the cable winding roller 12 side. An air cylinder (see FIG. 1 and the like) for pressing through the cable 2 (to ensure that the cable 2 is wound around the cable take-up roller 12), 15 supplies air to the air cylinder 14. An air supply tube (see FIG. 1 and the like).

Further, in FIGS. 1 to 12, 16 is a cable holding roller (see FIG. 8 and the like) that receives a pressing force from the air cylinder 14 and presses the cable 2 against the cable winding roller 12, and 17 is the cable 2. An air supply trigger for the air motor 9 for supplying air to the air motor 9 when winding up (thus pulling back the eddy current flaw detection sensor 1) (see FIG. 2 and the like). The air supply trigger 17 for the air motor 9 also serves as the air supply trigger for the air cylinder 14. That is, when the operator operates the air supply trigger 17 for the air motor 9, the air from the air supply unit and the air supply hose 7 is supplied to the air motor side by the switching supply unit (not shown). However, the air supplied to the air motor side is supplied to the air motor air supply tube 10 for supplying air to the air motor 9 and the air cylinder 14 by the air branch portion 21 (described later) in FIG. It is branched into an air supply tube 15 for an air cylinder to be supplied, and is fed to both the air motor 9 and the air cylinder 14 at substantially the same time. Further, in FIGS. 1 to 12, 18 is an air supply tube for supplying air to the air motor 9 and the air cylinder 14 (see FIG. 1 and the like), and 19 is the air supply tube 18 for supplying air from the air supply unit. An air supply port for supplying to the air motor 9 and the air cylinder 14 (see FIG. 4 and the like), 20 is a back cover for covering the cable take-up roller 12 and the like, and a stopper on the cable 2 side. It is a back cover and stopper receiver (see FIG. 5 and the like) that also serves as a stopper receiver for receiving 3. Reference numeral 21 is an air from the air supply unit and the air supply hose 7, which is supplied to the air motor side by the switching supply unit (not shown), and air is supplied to the air motor 9. Air that branches into an air supply tube 10 for a motor and an air supply tube 15 for an air cylinder that supplies air to the air cylinder 14 and supplies the air to both the air motor 9 and the air cylinder 14 almost simultaneously. It is a branch.

Next, the operation of this embodiment will be described. In the present embodiment, when the operator is not performing a special operation, the air supply hose is provided from an air supply unit (a known device composed of an air compressor, an air tank, etc., which supplies compressed air or the like) (not shown). The air supplied through the air gun 7 is stopped from being supplied to the air gun, the air motor 9, and the like in the air gun grip 5. When the eddy current flaw detection sensor 1 is inserted and pumped into the hole (for example, see 31a in FIG. 14) which is the inspection target portion, the operator inserts the tip of the eddy current flaw detection sensor 1 into the hole. The operation of grasping the air gun grip 5 and pulling the trigger 6 for supplying air for pumping the eddy current flaw detection sensor 1 is performed. Then, the air from the air supply unit is supplied to the air gun (see FIG. 13B) side, and the eddy current flaw detection sensor 1 is pressure-fed into the hole by the air gun. At this time, the cable 2 attached to the eddy current flaw detection sensor 1 also moves into the hole following the eddy current flaw detection sensor 1 while inserting the insertion guide 4.

After the eddy current flaw detection sensor 1 has been sent out and moved into the hole, the operator then holds the air gun grip 5 and, in turn, triggers 17 for supplying air for driving the air motor. Perform the operation of pulling (see Fig. 2). Then, the air from the air supply unit passes through the air motor and the air cylinder air supply tube 18 (see FIG. 2), and further passes through the air motor air supply tube 10 (see FIG. 2). It is supplied to the air motor 9 and is supplied to the air cylinder 14 through the air cylinder air supply tube 15 (see FIG. 2).

As described above, when the air is supplied to the air motor 9, the cable take-up roller 12 (see FIG. 8) driven by the air motor 9 rotates, and the eddy current flaw detection sensor 1 in the hole rotates. The cable 2 is wound around the cable take-up roller 12 at a constant speed, and the eddy current flaw detection sensor 1 is pulled back at a constant speed. At the same time, the air is supplied to the air cylinder 14, so that the air cylinder 14 causes the cable holding roller 16 (see FIG. 8) to move upward in the drawing, that is, the take-up roller 12 (see FIG. 8). ) Side, whereby the cable 2 is relatively strongly sandwiched between the cable take-up roller 12 and the cable holding roller 16, and the cable 2 is surely taken up by the cable take-up roller 12. Will be.

In this way, as a result of the cable 2 being wound at a constant speed by the cable take-up roller 12 driven by the air motor 9, the eddy current flaw detection sensor 1 is pulled back while moving in the hole at a constant speed. However, in the process, the eddy current flaw detection sensor 1 detects the change in the eddy current generated on the inspection target side every predetermined time (or every movement of a predetermined distance), and the detected data is sequentially (as needed). It is sent to an external eddy current flaw detector main body (see reference numeral 12 and the like in FIG. 13) via the cable 2. The eddy current flaw detector main body determines the presence or absence of thinning, cracking, damage or other scratches on the inspection target (member constituting the hole) based on the data sent from the eddy current flaw detector 1.

As described above, in the present embodiment, both the device for sending the eddy current flaw detection sensor 1 into the hole and the device for pulling back the eddy current flaw detection sensor 1 after being sent to the hole are provided. , It is operated by the force of air commonly supplied by a single air supply unit and a single air supply hose 7. Therefore, according to the present embodiment, "the vortex flaw detection sensor 1 is sent into the hole by an air gun driven by air from the air supply unit, and the vortex flaw detection sensor 1 is sent into the hole. The pullback is performed by an electric motor driven by a power source supplied from an external power supply device via a power cable and a winch driven by the electric motor, etc., as compared with a conventional inspection device (see FIG. 13 etc.). By eliminating the need for large-capacity and heavy electric motors, electric motor controllers, power supply devices for electric motors, power cables, etc., the overall configuration of the device can be greatly simplified, made smaller, lighter, and less costly. , Work such as setting of equipment at the site of non-destructive inspection can be streamlined and facilitated.

Further, conventionally, the work of pulling back the eddy current flaw detection sensor 1 in the hole is often performed manually, but as compared with the case of such a conventional manual operation, the eddy current flaw detection sensor 1 according to the present embodiment. Since the pull-back of 1 can be automatically performed at a constant speed by the air motor 9 and the cable take-up roller 12 driven by the air motor 9, the inspection quality is not varied and the body to the worker during the inspection is inspected. The burden on the target can be greatly reduced.

Further, in the present embodiment, since the air motor 9 is configured (integrally) with the air gun in the same device, the entire device according to the present embodiment is further simplified and lightweight. This makes it possible to make on-site inspection work more efficient and easier.

Further, in the present embodiment, it is common depending on whether the operator operates the air gun air supply trigger 6 or the air motor and the air cylinder air supply trigger 17 as described above. The air supplied from the air supply unit via the common supply hose 7 is supplied to the air gun side, the air motor 9 (and the air cylinder 14) side, or not supplied to any of the above. Since it is possible to select and switch between the two and the air based on the user's operation, the air from the air supply unit is sent out into the hole of the eddy current flaw detection sensor 1 and also into the hole. It can also be used in common (but selectively) for pulling back the eddy current flaw detection sensor 1, further simplifying the overall configuration of the device, reducing the size and weight, and reducing the cost. become able to.

Further, in the present embodiment, when the vortex flaw detection sensor 1 sent into the hole is pulled back, the cable holding roller 16 (see FIG. 8) is pressed by the air cylinder 14 driven by the air from the air supply unit. When the cable 2 is pressed toward the cable take-up roller 12, the cable 2 of the eddy current flaw detection sensor 1 is strongly sandwiched between the cable take-up roller 12 and the cable holding roller 16, and the cable 2 is said to be the same. Since the cable winding roller 12 can be reliably wound up, the pull-back operation of the eddy current flaw detection sensor 1 can be performed more reliably and accurately.

Further, in the present embodiment, when the operator operates the air supply trigger 17 for the air motor 9 (which also serves as the air supply trigger for the air cylinder 14), the air supply unit and the air supply hose 7 are used. The air is supplied to the air motor side by the switching supply unit (not shown), and the air supplied to the air motor side is supplied to the air motor by the air branch portion 21 (see FIG. 2 and the like). The air motor 9 and the air are branched into an air motor air supply tube 10 for supplying air to 9 and an air cylinder air supply tube 15 for supplying air to the air cylinder 14 (see FIG. 2 and the like). The air motor 9 and the air cylinder 14 are driven almost at the same time by being sent to both of the cylinders 14 at almost the same time. Therefore, according to the present embodiment, the air branching portion 21 or the like "supplies air from a single and common air supply portion to both the air motor 9 and the air cylinder 14 at almost the same time. It is possible to realize a simple and inexpensive configuration that "drives them almost at the same time". In the present embodiment, by realizing such a simple and inexpensive configuration, the cable 2 of the flaw detection sensor 1 is driven by the air motor 9 by the cable take-up roller 12 and the air cylinder 14. Since it is securely sandwiched between the cable holding roller 16 (see FIG. 8 and the like) to be pressed and is reliably moved or wound by the cable winding roller 12, the scratch detection sensor is pulled back. The operation can be performed reliably and accurately at low cost.

Although the embodiments of the present invention have been described above, the present invention is not limited to those described as the above-described embodiments, and various modifications and modifications can be made. For example, in the embodiment, in a non-destructive inspection by a vortex flaw detection method, the vortex flaw detection sensor 1 is inserted and pumped into a hole (for example, see 31a in FIG. 14) which is a part of the inspection target, and then the vortex flaw detection sensor 1 is inserted. Although used to perform pull-back operations, the invention is not limited to such applications, for example, thinning, cracking, etc. to be inspected from reflected waves received after transmitting ultrasonic waves. Also for cases such as inserting and pumping an ultrasonic sensor into a hole (for example, see 31a in FIG. 14) that is a part of the inspection target in order to measure scratches, etc., and then pulling back the ultrasonic sensor. Of course, it can be used.

1 Eddy current flaw detection sensor (ET sensor)
2 Cable 3 Stopper 4 Insertion guide 5 Air gun grip 6 Air supply trigger for air for air gun 7 Air supply hose for air for air gun, air motor and air cylinder 8 Air for air for air gun, air motor and air cylinder Supply port 9 Air motor 10 Air supply tube for air for air motor 11 Regulator 12 Cable take-up roller 13 Head gear 14 Air cylinder 15 Air supply tube for air for air cylinder 16 Cable holding roller 17 Air for air motor Air supply trigger for 18 Air supply tube for air for air motor and air cylinder 19 Air supply port for air for air motor and air cylinder 20 Back cover and stopper receiver 21 Air branch

The device for sending and pulling back the flaw detection sensor according to the present invention for solving the above problems sends the flaw detection sensor into the hole which is the inspection target portion, and then pulls back the flaw detection sensor at a constant speed. An air gun that sends out the flaw detection sensor into the hole by air, and a flaw detection sensor after being sent into the hole from the hole to the air gun direction. An air motor driven by air, an air supply unit capable of supplying driving air to both the air gun and the air motor, and air from the air supply unit on the air gun side or the air supply unit. A switching supply unit that selectively supplies to one of the air motor sides and a pull-back mechanism for pulling back the flaw detection sensor sent into the hole, which is rotated by the air motor to the flaw detection sensor. A first roller for moving or winding the attached cable, a second roller for sandwiching the cable between the first roller, and the second roller for pressing the first roller side. The air cylinder includes a pull-back mechanism including an air cylinder, and the air cylinder is a part of the air supplied from the switching supply unit to the air motor when the air motor is driven by the air from the switching supply unit. It is characterized in that it is configured to be driven by using.

Claims (5)

A flaw detection sensor sending and pulling device that sends out a flaw detection sensor into the hole that is the part to be inspected and then pulls back the flaw detection sensor at a constant speed.
An air gun that sends the flaw detection sensor into the hole by air,
An air-driven air motor that pulls the flaw detection sensor after being sent into the hole from the hole toward the air gun, and
An air supply unit that supplies air for driving in common to both the air gun and the air motor,
A switching supply unit that selectively supplies air from the air supply unit to the air gun side or the air motor side.
A device for sending and pulling back a flaw detection sensor. The device for sending and pulling back a flaw detection sensor according to claim 1, wherein the air motor is configured together with the air gun in a device that the user can have. The switching supply unit supplies the air supplied from the air supply unit side to the air gun side when the first operation is performed by the user, and from the air supply unit side when the second operation is performed by the user. When the supplied air is supplied to the air motor side and neither the first operation nor the second operation is performed by the user, the air supplied from the air supply unit side is supplied to the air gun side and the air motor. The sending and pulling device for a flaw detection sensor according to claim 1 or 2, which is intended not to supply to any of the sides. A pull-back mechanism for pulling back the flaw detection sensor sent into the hole, the first roller rotated by the air motor to move or wind the cable attached to the flaw detection sensor, and the said. A second roller that sandwiches the cable between the first roller and an air cylinder that presses the second roller toward the first roller, which is a part of the air supplied from the air supply unit. The delivery and pull-back device for a flaw detection sensor according to any one of claims 1 to 3, further comprising a pull-back mechanism including an air cylinder driven by. When the flaw detection sensor sent into the hole is pulled back from the hole toward the air gun, the air from the air supply unit, which is supplied only to the air motor side by the switching supply unit, is further added. The flaw detection sensor sending and pulling device according to claim 4, further comprising an air branching portion for branching to supply both the air motor and the air cylinder at the same time.

Images