JP3010024U - Rotating work equipment - Google Patents

Abstract

(57) [Summary] [Structure] This rotary working device A includes a plurality of rollers 7a, 7b, 8a-
The entire body rotates around the pipe P while rolling 8h on the peripheral surface Pa of the pipe P. During rotation, the developer for penetrant inspection is sprayed from the cylinder 3 onto the peripheral surface Pa of the pipe P to apply it.
A pair of opposing members 1, 2 holding the pipe 3P via rollers.
Are connected by the connecting members 5 and 6 on both sides of the pipe P, respectively. The connecting members 5 and 6 can adjust the distance between the facing members 1 and 2. The threaded rod 61 of the connecting member 6 can be separated from the facing member 1 and rocked to retract from the passage of the pipe P 1. The entire rotary working device A rotates around the pipe P. [Effect] It can be applied to pipes of various diameters and can be easily attached and detached in the radial direction of the pipe. It has a simple structure and is lightweight. It is suitable for penetrating flaw detection at many inspection points such as pipelines.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary working device for performing a work by rotating a work body such as a cylindrical pipe for performing a predetermined work on the work body around the work body.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, the penetrant inspection method has been used to extract defects such as minute cracks on the surface of an object. In this penetrant inspection method, first, a red penetrant inspection liquid is applied to the surface of the object to be inspected by a spray or the like to allow the penetrant inspection liquid to penetrate into the cracks, and then the penetrant inspection liquid on the surface of the object to be inspected. After wiping, a highly volatile developer containing white powder is applied to the surface of the object to be inspected.

As a result, the penetrant inspection liquid that has penetrated into the cracks is sucked out by the white powder on the surface of the object to be inspected, and bleeding occurs in a diffused manner. As a result, even if it is a minute crack whose width is on the order of a few microns to 10 microns and cannot be found by visual observation, it can be enlarged as a bleed of 100 to 150 microns, so it should be easily found by visual inspection. You can

By the way, in this penetrant inspection, it is particularly preferable that the developing solution is uniformly applied to the surface of the inspection object with a predetermined application thickness in order to improve extraction accuracy. The reason is that if the coating thickness is too thin, the amount of penetrant flaws absorbed by the white powder will be insufficient, and it will not be possible to get enough bleeding. This is because the penetrant inspection liquid is not sucked up to the surface, and in any case, defects may not be found.

However, conventionally, the developer is sprayed from a spray can held in the hand and applied to the object to be inspected, so that the distance between the spray can and the surface of the object to be inspected varies. Then, it was difficult to apply it uniformly. In particular, when the object was a pipe, it was impossible to uniformly apply the developing solution to the peripheral surface of the pipe. On the other hand, for example, in a pipe line in which a large number of very long pipes run in parallel or vertically and horizontally, surface defects such as blowholes, cracks and slugs at a predetermined portion (for example, a welded portion) of the above pipe are found. In order to do so, the following requests and problems are expected when using the above penetrant inspection. That is, even if a jig to be attached to a pipe is invented, it is necessary to inspect a large number of locations on a long pipe, and thus a jig that can be easily attached to and detached from the pipe is required. Since the diameter of the pipes varies, different jigs were prepared according to the diameter of the pipes, resulting in higher costs.

By the way, other than the above-mentioned spray can, as long as it is a working body that needs to keep a certain distance from the peripheral surface of the pipe to orbit the pipe, the same requirements as those mentioned above and There is a problem. Further, the work object to be worked by the work object is not limited to the pipe, and even if it is a solid round bar member, there are the same requirements and problems as those mentioned above.

The present invention has been made in view of the above problems, and an object of the present invention is to be applied to work pieces having different thicknesses and to be easily attached to and detached from the work piece. It is an object of the present invention to provide a rotary working device capable of performing work by rotating a work body around a work body while keeping a constant distance from the work body.

[0008]

[Means and Actions for Solving the Problems]

 In order to achieve the above-mentioned object, (1) The rotary working device according to claim 1 includes a pair of facing members that are arranged to face each other with a work body made of a hollow or solid long circular cross-section member sandwiched therebetween, With the work body attached to one of the facing members in a predetermined posture and performing the predetermined work on the work body, and facing each other with the work body sandwiched therebetween, both the facing members are separated from each other. A pair of connecting means that is adjustable and is rotatably supported by either one of the facing members, and is rolled on the peripheral surface of the work body while the one of the facing members is supported by the work body. At least one first supporting roller and the other opposing member rotatably supported, and the other opposing member is rolled on the peripheral surface of the workpiece while supporting the other opposing member with respect to the workpiece. At least two second support rollers, at least One coupling means is characterized in that attached to and out path or al retractably the opposing member of the working member to between the opposing members together.

According to the above configuration, the work piece is inserted between the opposing members in a state where the retractable connecting means is retracted from the entry / exit path of the work piece. Next, after returning the retractable connecting means to the above-mentioned entrance / exit path, the distance between the opposing members is adjusted by the connecting means. As a result, at least one first supporting roller and at least two second supporting rollers supported by the respective facing members are brought into contact with the peripheral surface of the work piece, and the at least three supporting rollers are used to face each other. The member is rotatably supported on the peripheral surface of the work piece. As a result, the working body can be easily rotated integrally with the opposing members around the work body. If a structure having a member fixed to the work piece and a rotating member rotatably supported by a guide mechanism is adopted, the structure becomes complicated and the weight becomes heavy. However, in the present invention, the whole structure is supported and rotated by the rollers, so that the structure can be simplified and the weight can be reduced. (2) The rotary working device according to claim 2 has a pair of facing members which are arranged to face each other with a work piece made of a hollow or solid long circular cross section interposed therebetween, and one of the facing members has a predetermined size. And a cylinder for ejecting the penetrant flaw detection developer from the spraying section onto the peripheral surface of the work piece, and both facing members with the work piece sandwiched therebetween. A pair of connecting means for connecting the space between them in an adjustable manner, and one of the opposing members rotatably supported, and the one of the opposing members is supported with respect to the workpiece. At least one first supporting roller that is rolled on the surface, and the peripheral surface of the work piece supported rotatably by the other opposite member, with the other opposite member supported on the work piece. With at least two second support rollers that are rolled into And one coupling means also is characterized in that attached to and out path or al retractably the opposing member of the working member to between the opposing members together.

According to the above configuration, in addition to the same operation as the device according to the first aspect of the present invention, the cylinder is maintained while the distance between the injection unit of the cylinder and the peripheral surface of the work piece is kept constant. Since it can be easily revolved around the work piece, the developer for penetrant inspection can be uniformly applied. (3) A rotary working device according to a third aspect of the present invention is a rotary working device, wherein a pair of facing members are arranged to face each other with a work body made of a hollow or solid long circular cross-section member interposed therebetween, and one of the facing members has a predetermined size. Cylinder attached to the peripheral surface of the work piece to inject the developer for penetrant flaw detection from the spraying part, and attached to one of the facing members in a predetermined posture to image the surface of the work piece. In a state of being opposed to each other with the image pickup means sandwiching the work piece, a pair of connecting means for connecting the opposite members to each other so that the distance between them can be adjusted, and freely rotatable to one of the opposite members. And at least one first supporting roller which is supported by the above-mentioned one opposing member and is rolled on the peripheral surface of the workpiece with the one opposing member supported on the workpiece, and rotatably supported by the other opposing member. Supported and supports the other facing member against the work piece And at least one second support roller that is rolled around the peripheral surface of the work piece in a closed state, and at least one of the connecting means is retracted from the passage of the work piece between the opposing members. It is characterized in that it is attached to the facing member as much as possible.

According to the above configuration, the cylinder can be easily revolved around the work piece in a state where the distance between the injection part of the cylinder and the peripheral surface of the work piece is kept constant. The developer for scratches can be applied uniformly. Further, the image pickup means can be rotated around the work piece while keeping the distance between the image pickup means and the peripheral surface of the work piece constant, whereby the defects on the surface of the extracted work piece are extracted. Can be imaged by the imaging means. Even if the back of the work piece is a narrow space where it is difficult for a person's head to enter, the image pickup means can be placed around this back space to capture an image of the rear part of the work piece. The rear image can be observed. Also, the captured image can be recorded by a video recorder or the like. (4) The rotary working device according to claim 4 has a pair of facing members which are arranged to face each other with a work body made of a hollow or solid long circular cross section interposed therebetween, and one of the facing members has a predetermined size. Cylinder attached to the peripheral surface of the work piece to inject the developer for penetrant flaw detection from the spraying part, and attached to one of the facing members in a predetermined posture to image the surface of the work piece. An image pickup means, a shutter member that covers the window for transmitting light to the image pickup means so as to be openable, and prevents the developing solution sprayed from the spray section of the cylinder from being applied to the window section; In a state of being opposed to each other with the body sandwiched therebetween, a pair of connecting means for connecting the opposing members to each other so that the space between them can be adjusted, and one of the opposing members are rotatably supported. With the opposing member supported on the work piece, At least one first supporting roller that is rolled on the peripheral surface and the other opposing member rotatably supported, and while the other opposing member is supported on the workpiece, the circumference of the workpiece is supported. At least two second supporting rollers that are rolled on the surface, and at least one coupling means is attached to the facing member so as to be retractable from the path of entry and exit of the work piece between the facing members. It is characterized by that.

According to the above configuration, in addition to the same effect as the device according to the third aspect of the present invention, the window for transmitting light to the image pickup unit is opened by the shutter member during the injection from the injection unit of the cylinder. By covering it, it is possible to prevent the developing solution from being applied to the window. (5) A rotary working device according to claim 5 is a rotary working device, wherein a pair of facing members are arranged so as to face each other with a work body made of a hollow or solid long circular cross section sandwiched therebetween, and at least one facing member has a predetermined shape. A pair of members that connect the opposing members to each other in an adjustable state with the work member attached in a posture and performing a predetermined work on the work member and facing each other with the work member interposed therebetween. The coupling means and at least one first rotatably supported by one of the opposing members, and being rolled around the peripheral surface of the workpiece with the one opposing member supported by the workpiece. A supporting roller and at least two second supports that are rotatably supported by the other opposing member and that are rolled on the peripheral surface of the workpiece with the other opposing member supported by the workpiece. A roller and at least one coupling means is The facing means is attached to the opposing member so as to be able to retract from the path of entry and exit of the work piece between the members, and the retractable attachment means includes at least one threaded rod, and one end of this threaded rod is , The screw rod is swingably connected to one of the facing members in a direction in which the screw rod can be retracted from the entrance / exit path, and the other end of the screw rod is connected to a through hole formed in the other facing member. It is fitted in a nut for adjusting the distance between the opposing members in a state of being movably penetrated in the axial direction, and the through hole allows the other end of the threaded rod to be disengaged with the swing. It is characterized by being open to the public.

According to the above configuration, in addition to the same effect as the device according to the first aspect, the following effect is achieved. That is, one end of the screw rod swingable with respect to one facing member is swung, and the other end of the screw rod is accordingly separated from the through hole of the other facing member. As a result, the screw rod retracts from the entry / exit path of the work piece, so that the work piece can be moved in and out between the facing members. After inserting the work piece between both facing members, return the other end of the screw rod to the through hole and tighten the nut that is in contact with the other facing member to make the gap between the facing members easier. Can be adjusted to.

[0014]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing a rotary working device according to an embodiment of the present invention, and FIG. 2 is a partially cutaway side view thereof. With reference to these drawings, this rotary working device A is a device that is attached to a long pipe P as a work piece so that the entire work is rotatable around the pipe P.

With reference to FIGS. 1, 2, 6 and 7, the rotary working apparatus A includes first and second facing members 1 and 2 arranged to face each other with a pipe P interposed therebetween, and a first At a position on both sides of the cylinder P, which is attached to the facing member 1 of FIG. 1 through the mounting stay 9, which injects the developer for penetrant flaw detection as a working body, and the CCD camera 4 as an image pickup means, and the pipe P. The first and second connecting members 5 and 6 in which the facing members 1 and 2 are connected to each other so that the distance between them can be adjusted, and the first facing member 1 are rotatably attached to the pipe P. Two first support rollers 7a, 7b rolled on the peripheral surface Pa and eight second support rollers rotatably mounted on the second opposing member 2 and rolled on the peripheral surface Pa of the pipe P. Rollers 8a to 8h, positions of the cylinder 3 along the axial direction of the pipe 3, and the cylinder 3 A first adjusting mechanism 30 for adjusting the distance to the surface of the pipe 3 and a second adjusting mechanism 40 for finely adjusting the position of the camera 4 along the axial direction of the pipe P are provided.

With reference to FIGS. 1 and 6, the first support rollers 7a and 7b are respectively arranged at the opposite ends 1a and 1b of the facing member 1, and the rotation of the support rollers 7a and 7b is changed. The axis is parallel to the axis of the pipe P. Since the support rollers 7a and 7b are arranged at a predetermined distance in the longitudinal direction of the pipe P, the rotation work device A can be stably supported in the longitudinal direction of the pipe P. The brackets attached to the opposing member 1 so as to respectively support the first support rollers 7a and 7b are not shown.

With reference to FIGS. 1 and 7, the second support rollers 8a to 8h are divided into two groups of four and are arranged at the opposite ends 2a and 2b of the facing member 2, respectively. . Since the support rollers 8a and 8b are arranged at a predetermined distance in the longitudinal direction of the pipe P, the rotary working device A can be stably supported in the longitudinal direction of the pipe P. The central portion of the facing member 2 has a protrusion 2e that undulates in a mountain shape in a direction away from the pipe P. The protrusion 2e has a second small diameter support roller (8a) that fits a small diameter pipe P. , 8b) (8e, 8f) are arranged, and the large second support rollers (8a, 8b) (8e, 8f) for small diameter are respectively sandwiched between the projecting portion 2e and the remaining portion. Second support rollers (8c, 8d) (8g, 8h) for large diameter, which are adapted to the pipe P of diameter, are arranged. The brackets attached to the opposing member 2 so as to respectively support the rotation shafts of the second support rollers 8a to 8h are omitted in the drawing.

The first connecting member 5 connects the end portions 1c and 2c of the facing members 1 and 2 that face each other, and a pair is provided between them so as to be separated from each other by a predetermined distance. One end 51a of each first connecting member 5 is connected to a pair of brackets 21 formed at the end 2c of the second facing member 2 with a screw rod 51 rotatably connected via a pin (not shown). The nut 52 is fitted to the other end 51b of the screw rod 51. The other end 51b of the screw rod 51 is axially movably inserted into a through hole 1e formed in the end 1c of the first facing member 1.

The second connecting member 6 is provided only by connecting the central portions of the opposite end portions 1d and 2d of the facing members 1 and 2 to each other. The second connecting member 6 has a threaded end 61a whose one end 61a is rotatably connected to a pair of brackets 22 standing on the end 2c of the second facing member 2 via a pin (not shown). And a nut 62 fitted to the other end 61b of the screw rod 61. The other end 61b of the screw rod 61 is axially movably inserted into a through hole 1f formed in the end 1d of the first facing member 1. The through hole 1f is opened so that when the screw rod 61 swings around the one end 61a, the other end 61b of the screw rod 61 can move in and out in the swinging direction. By swinging the screw rod 61 counterclockwise in FIG. 3, the screw rod 61 is retracted from the entry / exit path Q for allowing the pipe P to relatively enter and exit between the opposing members 1 and 2. Is able to.

With reference to FIGS. 1 and 2, the mounting stay 9 has a main body portion 91 fixed by screws 15 and 16 and one end portion of the main body portion 91 in a state orthogonal to the first facing member 1. 2 is provided with a support plate portion 92 which is supported by the first adjusting mechanism 30 so as to be vertically movable and left and right in FIG. On the other hand, a camera case 93 accommodating the camera 4 and the like is attached to the other end of the main body 91 of the attachment stay 9 via the second adjusting mechanism 40 so that the vertical position can be adjusted. The cylinder 3 is attached to the support plate portion 92 by an elastic holding clamp 92a. Reference numeral 37 is an air pipe to the cylinder 3.

A guide base 41 is fixed to the mounting stay 9, and a camera case 93 is fitted to the guide base 41 so as to be vertically movable. The second adjusting mechanism 40 is a bolt member whose front end is screwed to the camera case 93 while penetrating the mounting stay 9 and the guide base 41, and the head 40 a is arranged on the upper surface of the mounting stay 9. By rotating this bolt member, the vertical position of the camera 4 with respect to the mounting stay 9 can be finely adjusted.

A cylinder housing 35 having an air cylinder 94, which will be described later, is fixed to the upper portion of the support plate portion 92. The first adjusting mechanism 30 has a slide plate 36 slidably attached to the attachment stay 9 in the drawing, one end of which is screwed to the slide plate 36, and a head 31a will be described later. It is composed of a bolt member 31 supporting a cylinder casing 35. The slide plate 36 is slid by rotating a screw (not shown), whereby the distance between the cylinder 3 and the surface Pa of the pipe P can be adjusted. By rotating the bolt member, the vertical position of the cylinder 3 with respect to the mounting stay 9 can be finely adjusted.

With the rotary working device A mounted on the pipe P, the cylinder 3 and the camera 4 are arranged at positions facing each other with the pipe P interposed therebetween. This is to prevent the developing solution ejected from the cylinder 3 from reaching the camera 4 side as much as possible. It should be noted that the camera case 10 is provided with a window 4a for light transmission and is internally provided with a reflecting mirror 4b, and the camera 4 receives light through the window 4a and the reflecting mirror 4b. A shutter member 11 capable of opening and closing the window portion 4a is fitted on the outer peripheral portion of the camera case 10.

The cylinder 3 has a cylinder main body 3a and a spraying unit 3b that can move vertically with respect to the cylinder main body 3a, and has a known structure that sprays when the spraying unit 3b is pushed down. An air cylinder 94 is attached to the support plate portion 92 as an external operation mechanism for remotely controlling the injection portion 3b, and the air cylinder 94 is built in the cylinder housing 35. . By supplying air to the air cylinder 94 from an air supply source (not shown) through the air pipe 37, the rod 94a is extended and the injection portion 3b is pushed down.

It is preferable that the injection portion 3b is directed toward the center of the pipe 3, and in order to facilitate the adjustment, the holding force of the clamp 92a can be adjusted by applying a predetermined force with the cylinder 3 attached. It is set so that the direction of the cylinder 3 can be easily changed. Next, the procedure of penetrant inspection using this rotary working device will be described. 1) Sufficiently spray the penetrant flaw detection liquid onto the peripheral surface of the pipe P in advance, and after a predetermined time, wipe off the penetrant flaw detection liquid on the surface. 2) Next, the screw rod 6 of the second connecting member 6 is swung to move the screw rod 61 away from the passage Q of the pipe P as shown in FIG. Insert a pipe P between the two members. At this time, as shown in FIG. 2, the injection portion 3b of the cylinder 3 and the window portion 4a of the camera 4 are aligned with a position where the inspection portion (for example, a welded portion) Pb of the pipe P can substantially face each other. 3) Next, as shown in FIG. 4, after the screw rod 62 of the second connecting member 6 is returned to the through hole 1f of the first facing member 1, the screw rods 51 and 61 of the connecting members 5 and 6 are fitted. The nuts 51 and 62 thus obtained are pivotally operated to adjust the distance between the facing members 1 and 2 to be narrowed as shown in FIG. As a result, the supporting rollers 7a, 7b, 8a to 8h attached to the facing members 1 and 2 are brought into contact with the peripheral surface Pa of the pipe P, and the supporting rollers 7a, 7b, 8a to 8h The opposing members 1 and 2, the cylinder 3 and the camera 4 as a working body are rotatably supported on the peripheral surface Pa of the pipe P. 4) Next, by the adjustment by the first and second adjusting mechanisms 30 and 40, the injection part 3b of the cylinder 3 and the window part 4b of the camera 4 can directly face the inspection point Pb, and the injection part 3b and the inspection point Pb Adjust so that the distance is appropriate (see Figure 2). 5) Next, while the shutter member 11 is closed, the jetting portion 3b of the bomb 3 is pushed down by the air cylinder 94, and the entire rotary working device A is rolled by the supporting rollers 7a, 7b, 8a to 8h. , The developer is applied to the peripheral surface Pa of the pipe P by making one rotation around the pipe P. 6) After development, while the lens 4a is opened by the shutter member 11, the entire rotary working device A is rotated once around the pipe P to take an image of the peripheral surface Pa of the pipe P. 7) The image is monitored by a monitor TV (not shown) or the like to check whether there is a defective portion.

The application of the penetrant flaw detection liquid in the above 1) can also be performed using the rotary working device A. In this case, after the rotary working device A is mounted, a cylinder for penetrant flaw detection liquid is attached, the penetrant flaw detection liquid is applied, and then the cylinder 3 for developer is replaced. According to this embodiment, the following operational effects are exhibited. That is, since the pair of facing members 1 and 2 sandwiching the pipe P are connected on both sides of the pipe P by using the first and second connecting members 5 and 6, respectively, the rotary working device A is connected by the pipe P. Can be firmly held, and this can be realized with a simple structure, so that the weight can be reduced. By retracting the second connecting member 6, the rotary working device A can be attached and detached in the radial direction of the pipe P, so that the long pipe P can be easily and easily attached and detached at a desired position. . Work can be performed very efficiently when there are many inspection points. By adjusting the distance between the opposing members 1 and 2 by the pair of connecting members 5 and 6, the diameter of the pipe P can be adjusted. In particular, the so-called three-point support was adopted. That is, if only one side is illustrated, referring to FIG. 8, the small diameter pipe P1 is supported at three points of the support rollers 7a, 8a, 8b, or the large diameter pipe P2 is supported by the support rollers 7a, 8c, 8d. Support in points. Therefore, the support rollers 7a, 8a to 8d (7b, 8e to 8h) can be applied to pipes P having various circular cross-sections having a size capable of sharing a tangent line, and the application range can be greatly widened. If a structure having a fixed member that is fixed to the pipe and a rotating member that is rotatably supported by a guide mechanism is adopted, the structure becomes complicated and the weight becomes heavy. However, in the present embodiment, the entire rotary work device A is integrally supported by the peripheral surface Pa of the pipe P and rotated, so that the structure can be simplified and the weight can be reduced. The cylinder 3 or the camera 4 and the pipe P can be smoothly and easily rotated with the distance kept constant, and the workability is good. In particular, since the developing solution cylinder 3 for penetrant flaw detection is used as the working body, the cylinder 3 is rotated at a substantially constant speed while keeping the distance between the pipe 3 and the injection portion 3b of the cylinder 3 constant. As a result, the developing solution can be uniformly applied to the peripheral surface Pa of the pipe P. As a result, the defect of the pipe P can be surely found. Moreover, the defects on the surface of the pipe P extracted by the developer can be picked up by the camera 4 rotated around the vip P. For example, even if the rear of the pipe 3 is a narrow space, You can observe the image of. Also, the captured image can be recorded by a video recorder or the like. Further, by covering the window portion 4a of the camera 4 with the shutter member 11 during the ejection from the ejection portion 3b of the cylinder 3, it is possible to reliably prevent the developing solution from being applied to the window portion 4a. You can Therefore, the labor for wiping it off can be omitted, and the workability is further improved. In addition, since one end 61a is swingable to the second facing member 2 and the other end 61b is the connecting member 6 by the screw rod 61 which can be detached from the first facing member 1, the structure can be simplified. At the same time, the operation of retracting and returning the screw rod 61 can be performed very easily, and the attaching / detaching work can be performed more easily.

The present invention is not limited to the above-described embodiment, and for example, as shown in FIG. 9, a pair of first support rollers 7a and 7b may be provided. In this case, the main rotation work is performed. The device A can be supported more reliably on the pipe P. In FIG. 9, the other structure is exactly the same as that of the embodiment of FIG. 1, so the same reference numerals are given to the drawing and the description thereof is omitted.

Although the work piece is a pipe in the above embodiment, it may be solid. Furthermore, as the working body, for example, a scribing needle or the like can be applied. In this case, the mounting stay will be changed for the marking needle. Further, in the above embodiment, the configuration of the camera 4 can be omitted. In this case, the shutter member 11 is also unnecessary.

Besides, various design changes can be made without changing the scope of the present invention.

[0030]

[Effect of device]

 The invention according to claim 1 has the following effects. That is, since the connecting means is provided on both sides of the work piece, both the opposing members and the work piece can be firmly held by the work piece. Moreover, since this can be realized with a simple structure, weight reduction can be achieved. By retracting one of the connecting means from the passage of the work body between the opposing members, it is possible to easily attach and detach the long work body at a desired position in the radial direction. Work can be performed very efficiently when there are many work sites. The thickness of the work piece can be adjusted by adjusting the distance between the opposing members by the connecting means. In particular, since at least three supporting rollers support the rollers, these supporting rollers can be applied to a work piece having a circular cross section having a size capable of sharing a tangent line, and the application range is wide. If a structure having a fixed member that is fixed to the work piece and a rotating member that is rotatably supported by a guide mechanism is adopted, the structure becomes complicated and the weight becomes heavy. However, in the present invention in which the whole is integrally supported on the peripheral surface of the work piece by the roller and rotated, the structure can be simplified and the weight can be reduced, and the work piece and the work piece are separated from each other. The work can be smoothly and easily rotated with a certain distance between them, and workability is good.

According to the second aspect of the invention, in addition to the above effects, and, the following effects are achieved. That is, as a result of being able to uniformly apply the penetrant flaw detection developer from the cylinder as the working body to the peripheral surface of the working body, defects in the working body can be reliably found. According to the third aspect of the invention, in addition to the above effects, the following effects are achieved. That is, the defect on the surface of the work piece extracted by the developer can be picked up by the image pickup means rotated around the work piece. For example, even if the rear side of the work piece is a narrow space, The image of the rear part of the work piece can be observed. Also, the captured image can be recorded by a video recorder or the like.

According to the invention of claim 4, in addition to being able to obtain the above-mentioned effects ,,,,, and, the following effects are exhibited. That is, it is possible to prevent the developing solution from being applied to the window portion by covering the window portion of the image pickup means with the shutter member during the ejection from the cylinder. According to the invention of claim 5, in addition to the above effects, and, the following effects are achieved. That is, since the retractable connecting means is a screw rod whose one end is swingable to one opposing member and the other end is detachable from the other opposing member, the structure can be simplified and the screw rod can be simplified. It is very easy to evacuate and return the car from the entry / exit path, and it is easier to attach and detach.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a rotary working device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view of a rotary working device mounted on a pipe.

FIG. 3 is a schematic sectional view of a rotary working device showing a mounting process on a pipe.

FIG. 4 is a schematic sectional view of a rotary working device showing a mounting process on a pipe.

FIG. 5 is a schematic cross-sectional view of the rotary working device showing a state where the rotary working device is mounted on a pipe.

FIG. 6 is a schematic side view of the rotary working device at the time of mounting as seen from the side of one facing member.

FIG. 7 is a schematic side view of the rotary working device at the time of mounting as seen from the other facing member side.

FIG. 8 is a schematic diagram showing a relationship between a pipe and a support roller.

FIG. 9 is an exploded perspective view of a rotary working device according to another embodiment of the present invention.

[Explanation of symbols]

 P pipe (working object) Pa peripheral surface 1, 2 facing member 3 cylinder (working object) 3b injection part 4 camera (working object) 4a window part 5,6 connecting member 61 screw rod 62 nut 7a, 7b first support Rollers 8a to 8h Second support roller 11 Shutter member

Claims (5)

[Scope of utility model registration request] 1. A pair of opposing members, which are opposed to each other with a workpiece, which is a hollow or solid circular member having a long cross section, sandwiched therebetween, and at least one of the opposing members attached to the workpiece in a predetermined posture. A work body for performing a predetermined work, and a pair of connecting means for connecting the facing members to each other in a state of being arranged so as to face each other with the work body sandwiched therebetween, and an interval between the facing members being adjustable. At least one first supporting roller that is rotatably supported by a member and is rolled on the peripheral surface of the work piece while supporting the one opposite member with respect to the work piece; At least one second supporting roller which is rotatably supported and is rolled on the peripheral surface of the work body while the other facing member is supported on the work body; Of the work piece between both facing members Rotary working device, characterized in that attached to the opposing member to be retracted from the incoming path. 2. A pair of opposing members, which are opposed to each other with a workpiece, which is a hollow or solid circular member having a long cross section, being sandwiched therebetween, and a workpiece which is attached to any one of the opposing members in a predetermined posture. A cylinder for injecting the developer for penetrant flaw detection from the injection unit to the peripheral surface of the above, and both opposing members are connected so as to be adjustable in a state of being opposed to each other with the work piece sandwiched therebetween. A pair of connecting means and at least one first member which is rotatably supported by one of the opposing members and which is rolled on the peripheral surface of the workpiece while supporting the one opposing member with respect to the workpiece. One support roller and at least two second supporting members that are rotatably supported by the other opposing member and that are rolled on the peripheral surface of the workpiece with the other opposing member supported on the workpiece. A supporting roller, and at least one connecting means is That is attached to the opposing member to be retracted from and out path of the working body in the inter-direction between members rotating working device according to claim. 3. A pair of opposing members, which are opposed to each other with a workpiece, which is a hollow or solid circular member having a long cross section, being sandwiched therebetween, and a workpiece which is attached to any one of the opposing members in a predetermined posture. A cylinder for injecting the developer for penetrant flaw detection from the injection unit to the peripheral surface of the work piece, an image pickup means for picking up an image of the surface of the work piece attached to one of the opposing members in a predetermined posture, and the work piece In a state of being opposed to each other with sandwiching them, a pair of connecting means for connecting the two opposing members to each other so that the distance between them can be adjusted, and one of the opposing members are rotatably supported, and the one of the opposing members is At least one first supporting roller that is rolled on the peripheral surface of the work piece while being supported with respect to the work piece, and rotatably supported by the other opposite member On the peripheral surface of the work piece while supporting it against the body At least two second supporting rollers that are moved, and at least one of the connecting means is attached to the opposing member so as to be retractable from the passage of the workpiece between the opposing members. And rotating work equipment. 4. A pair of opposing members, which are opposed to each other with a workpiece having a hollow or solid circular cross-section having a circular cross section interposed therebetween, and a workpiece to be attached to any one of the opposing members in a predetermined posture. A cylinder for injecting the developer for penetrant flaw detection from the injection unit onto the peripheral surface of the, a photographing means for photographing the surface of the work piece attached in a predetermined posture to one of the opposing members, A state in which a shutter member that covers the light-transmitting window so as to be opened so as to prevent the developing solution sprayed from the spraying section of the cylinder from being applied to the window section, and a shutter member that are opposed to each other with the work piece sandwiched therebetween. A pair of connecting means for connecting the opposing members to each other so that the distance between them can be adjusted, and one of the opposing members are rotatably supported, and the one opposing member is supported with respect to the work piece. At least, it will be rolled around the work surface. One first support roller and at least two rotatably supported by the other opposing member, and being rolled on the peripheral surface of the workpiece with the other opposing member supported by the workpiece. A rotary working device comprising: a second supporting roller, wherein at least one of the connecting means is attached to the facing member so as to be retractable from a path of an object to be worked in and out between the facing members. 5. A pair of facing members, which are opposed to each other with a work body made of a hollow or solid long circular cross section interposed therebetween, and at least one of the facing members attached to the work body in a predetermined posture. A work body for performing a predetermined work, and a pair of connecting means for connecting the facing members to each other in a state of being arranged so as to face each other with the work body sandwiched therebetween, and an interval between the facing members being adjustable. At least one first supporting roller that is rotatably supported by a member and is rolled on the peripheral surface of the work piece while supporting the one opposite member with respect to the work piece; At least one second supporting roller which is rotatably supported and is rolled on the peripheral surface of the work body while the other facing member is supported on the work body; Of the work piece between both facing members The connecting means is removably attached to the facing member from the entry path, and the retractable connecting means includes at least one screw rod, and one end of the screw rod is screwed to one of the facing members. The rod is swingably connected in a direction in which it can be retracted from the entrance / exit path, and the other end of the screw rod is axially movably penetrated through a through hole formed in the other opposing member. And is fitted in a nut for adjusting the interval between the facing members, and the through hole is opened so that the other end of the screw rod can be disengaged with the swing. Rotating work device.