JP4380941B2 - Inspection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inspection apparatus that performs nondestructive inspection and shape measurement of a long hollow object to be inspected, radiation measurement that is inaccessible to humans, temperature measurement, and the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in an inspection apparatus that performs nondestructive inspection of a large, long, hollow inspection object by, for example, transmission testing for ultrasonic flaw detection, accurate positioning of a pair of opposing inspection heads arranged with the inspection object interposed therebetween Therefore, a U-shaped support member attached to the tip of the rod is inserted so as to sandwich the object to be inspected from one open end of the object to be inspected, and inspection heads are inserted at both ends of the U-shaped support member. The support member is fixed to be opposed to each other, and is integrally moved in a state where the support member is cantilevered in the longitudinal direction of the inspection object from one opening end side of the inspection object.
[0003]
In this case, when positioning the inspection head, a scaffold is built around the object to be inspected, the dimensions from the reference position are measured, and the positions of the internal and external inspection heads are determined.
[0004]
Especially when the object to be inspected is a long object of several meters or more, or a heavy object to be inspected by several tons, there is a limit to the cantilever inspection head. It becomes.
[0005]
[Problems to be solved by the invention]
As described above, in the conventional inspection apparatus, the dimension from the reference position is measured to position the inspection head inside and outside the inspected object. On the other hand, many burdens are imposed, and it is difficult to repeat accurate positioning of several mm or less.
[0006]
Also, when the inspection object is inspected at an arbitrary position of a long object of several meters or more, the cantilever structure in which the inspection head is fixed to the U-shaped support member causes the support member itself to bend. Can not perform a proper inspection.
[0007]
In addition, when moving a heavy to-be-inspected object of several tons to an inspection location, there is a risk of damaging the inspected object if there is an interference object such as an inspection head inside. There is also a danger such as.
[0008]
The present invention has been made to solve the above-described problems, and an object thereof is to provide an inspection apparatus capable of quickly and safely inspecting an object to be inspected and improving work efficiency. To do.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows.
[0010]
The invention corresponding to claim 1 is provided with an inner guide rail that is inserted through the inside of a long hollow inspection object, and is disposed outside the inspection object in parallel with the inner guide rail. An outer guide rail; a first support mechanism provided on one end side in the longitudinal direction of the object to be inspected; and movably supporting the inner guide rail to a retracted position in the longitudinal direction; and a longitudinal direction of the object to be inspected. A second support mechanism provided on the other end side for supporting the inner guide rail at the time of inspection and movable to a retracted position in a direction perpendicular to the longitudinal direction of the inspection object before the inspection; and the inner guide Inspection heads provided so as to be movable along the rail and the outer guide rail and facing each other with the object to be inspected therebetween, and power from a driving source is transmitted to these inspection heads to transmit the inspection target. Longitudinal direction of inspection object A drive transmission mechanism for moving in synchronization with, said supporting the object to be inspected rollably is and that a rotating mechanism synchronously rotated with the movement of the test head.
[0011]
According to a second aspect of the present invention, in the inspection apparatus according to the first aspect of the present invention, inspection heads provided so as to face each other with the object to be inspected facing each other are provided on the inner guide rail and the outer guide rail. The inner moving body and the outer moving body which are provided so as to be movable along the outer moving body are attached to the object to be retreated.
[0012]
The invention corresponding to claim 3 has a data processing function for processing data obtained from the inspection head and judging the result in the inspection apparatus of the invention corresponding to claim 1 or claim 2, and Control means for controlling the movement of the inner guide rail, the drive transmission mechanism, and the rotation mechanism is provided.
[0013]
According to a fourth aspect of the present invention, in the inspection apparatus according to the third aspect of the invention, the storage device provided in the control means stores in advance the shape information of the object to be inspected and the surrounding shape information, and based on this storage information The inspection apparatus main body on which the inner and outer guide rails, the first and second support mechanisms, the inspection head, and the rotation mechanism are mounted is controlled.
[0014]
The invention corresponding to claim 5 is the inspection apparatus according to claim 1 or 2, wherein the inner and outer guide rails, the first and second support mechanisms, the inspection head, and the rotation mechanism are mounted. The inspection apparatus main body is provided with an adjustment mechanism for adjusting the position and parallelism with respect to the inspection object.
[0015]
The invention corresponding to claim 6 is the inspection apparatus according to claim 1 or claim 2, wherein a plurality of inspection heads having different inspection purposes are used as opposing inspection heads that move along the inner and outer guide rails. Each is provided so that a plurality of inspections can be processed simultaneously.
[0016]
Therefore, in the inspection apparatus having such a configuration, obstacles such as rails and supports installed inside the inspection object can be retreated, so that the inspection object can be easily installed at the inspection position. can do.
[0017]
Also, when inspecting, move the rail, support, etc. from the retracted position to a predetermined position, and then finely adjust the relative position between the object to be inspected and the inspection head. By emphasizing the drive mechanism of the head, the entire inspection object can be inspected reliably, quickly and safely.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0019]
FIG. 1 shows a configuration example of an embodiment when an inspection apparatus according to the present invention is applied to an ultrasonic transmission method. (A) is a plan view, (b) is a side view, and FIG. 2 is the same embodiment. It is the enlarged view which looked at from the back end side.
[0020]
1 and 2, reference numeral 1 denotes a mobile vehicle having four traveling tires 2 having front and rear direction change mechanisms. The mobile vehicle 1 has, for example, a diameter of several meters, a length of 5 m or more, and a thickness. A hollow cylindrical inspection object 3 having a length of several tens of millimeters is mounted via a cradle 4. In this case, the inspection object 3 is supported by a total of eight support rollers 5 provided in front of and behind the cradle 4 on the mobile vehicle 1 so as to be rotatable in the circumferential direction, and the inspection object is provided. For example, the inspection object 3 can be driven to rotate by a rotation mechanism 6 provided at a rear end portion of 3.
[0021]
The rotating mechanism 6 has two outer rollers 7 arranged so as to be in contact with the lower side of the end of the inspection object 3, and the inspection object at a position facing the outer roller 7 toward the center of the inspection object 2. And two inner rollers 8 installed so as to be sandwiched, and one of the inner rollers 8 is rotationally driven by a drive motor (not shown) at a predetermined pitch, and the power of the drive motor is transferred from one inner roller to the other inner side. The roller can be transmitted via the sprocket 9 and the chain 10.
[0022]
Reference numeral 11 denotes an outer base provided with casters 12 arranged close to one side of the mobile vehicle 1, and the outer base 11 is a step portion having a predetermined height along the longitudinal direction of the inspection object 3. And a control panel 13 provided with an ultrasonic echo processing computer 13a and an ultrasonic flaw detector 13b is installed in this portion. The control panel 3 has an interlock function for controlling the operation of the entire apparatus and ensuring safety.
[0023]
Further, 15 is a support fixed to one end of the outer base 11 in the longitudinal direction, 16 is an inner rail support installed at the other end of the outer base 11 in the longitudinal direction, and this inner rail support 16 is placed on the installation base. It can move in a direction orthogonal to the longitudinal direction of the inspection object 3 along the laid track.
[0024]
On the other hand, 17 is an inner guide rail that is inserted into the inspection object 2, one end is supported by the support 15 so as to be movable in the longitudinal direction of the inspection object 3, and the front end is inserted into a guide hole that the inner rail support 16 has. The inner guide rail 17 has a box structure as shown in FIG. 3, and linear motion guide rails 18 are fixed to the upper, side, and lower surfaces with bolts in the longitudinal direction, and one end is a straight line on the side and lower surfaces. It is supported by the inner rail support 16 via the moving rail guide block 19 and is slidable in the longitudinal direction.
[0025]
An inner moving table 22 is supported on the inner guide rail 17 by upper and side linear rail guide blocks 19 and can be reciprocated between the support 15 and the inner rail support 16 by an X-axis drive motor 20. It is supported through a connected timing belt 21 so as to be movable in the longitudinal direction.
[0026]
In this case, the timing belt 21 becomes a movement path passing through the upper part and the inside of the inner guide rail 17.
[0027]
Reference numeral 23 denotes an outer guide rail disposed in parallel with the inner guide rail 17 on a stepped portion having a predetermined height formed along the longitudinal direction of the object 3 to be inspected on the outer base 12. Similar to the inner guide rail 17, two linear motion rail guides are fixed with bolts in the longitudinal direction.
[0028]
On this linear motion rail guide, an outer moving table 24 is supported by a guide block, and supported so as to be movable in the longitudinal direction via a timing belt 25 at a position facing the inner moving table 22. Power is transmitted to the timing belt 25 from the X-axis drive motor 21 of the inner guide rail 17.
[0029]
Here, the inner moving table 22 and the outer moving table 24 include two ultrasonic probe heads 26 for transmission and reception, and two ultrasonic probe heads 25 that are arranged in parallel on the inspection object 3 as inspection heads. And an air cylinder 27 that can be retracted from the object 3 to be inspected.
[0030]
The outer base 11 is connected to a fixed base 14 fixed to an installation floor in front of the outer base 11 with an adjusting screw 28, so that the installation position of the outer base 11 with respect to the inspection object 3 can be finely adjusted. Yes.
[0031]
Next, the operation of the inspection apparatus configured as described above will be described with reference to FIG.
[0032]
First, the inner guide rail 17 and the inner rail support 16 of the apparatus main body are retracted in the directions of the arrows as shown in FIG. 4A so that the inspection object 3 can be placed at the inspection position. In addition, the transmitting / receiving ultrasonic probe head 26 provided on the inner moving table 22 and the outer moving table 24 that move synchronously along the inner rail 17 and the outer rail 23 is radially moved from the object 3 to be inspected by the air cylinder 27. Is retracted to a retracted position away from the center.
[0033]
Next, as shown in FIG. 4B, the mobile vehicle 1 on which the inspection object 3 is mounted is moved to the vicinity of the inspection device by the tow vehicle 29 and stopped at a position approached to some extent.
[0034]
In this state, after the inner rail support 17 is moved and positioned in a direction orthogonal to the longitudinal direction of the inspection object 3 as shown in FIG. 4C, the inner guide rail 17 is inserted through the inspection object 3. The tip is inserted into a guide hole in the inner rail support 16 and fixed as shown in FIG.
[0035]
Thereafter, in order to synchronously drive the transmission / reception flaw detection head, the power transmission portions of the outer and inner probe heads are connected by the clutch 30 provided on the support 15 side.
[0036]
Further, in order to accurately determine the relative position between the inspection object 3 and the probe head, the inner guide rail 17 and the outer guide rail 23 are made parallel by the two left and right adjustment screws 28 provided on the fixed base 14. Make fine adjustments.
[0037]
Further, the transmitting / receiving ultrasonic probe heads 26 provided on the inner moving table 22 and the outer moving table 24 are moved to a predetermined distance relative to the inspection object 3.
[0038]
After the position setting of the inspection object 3 and the inspection apparatus is thus completed, the non-destructive inspection of the inspection object 3 is performed as follows under the control of the control panel 13.
[0039]
The control panel 13 controls the movement of the inner moving table 22 and the outer moving table 24 in synchronism with the X-axis drive motor at the same time as the rotation mechanism 6 of the inspection object 3 is operated. In this case, the inner moving table 22 and the outer moving table 24 linearly move in the longitudinal direction of the inspection object 3 step by step every time the inspection object 3 rotates once by the rotation mechanism 6 at a predetermined pitch.
[0040]
By repeating such an operation, an ultrasonic echo is transmitted / received to / from the inspection object 3 from the ultrasonic transmission / reception probe 26 provided so as to sandwich the inspection object 3 and collected at this time. The ultrasonic echo data is taken into the ultrasonic flaw detector 13b of the control panel 13, and the flaw detection result is confirmed. At the same time, the ultrasonic echo processing computer 13a performs image processing, thereby determining the entire flaw detection result or the partial flaw detection result. Processing is performed.
[0041]
Thus, according to the present embodiment, it is possible to reliably and quickly perform a destructive inspection of a long hollow inspection object. Also, the processing of the measurement data and the result thereof are immediately determined by the processing computer 13a of the control panel 13, so that if there is a problem, an appropriate countermeasure can be taken immediately.
[0042]
In the above embodiment, the case where the defect of the inspection object is detected by applying to the ultrasonic transmission method has been described, but the shape measurement of the inspection object which requires accurate positioning of the opposing inspection head, or the person cannot approach. The same configuration as described above can also be applied to radiation measurement and temperature measurement under the environment.
[0043]
In this case, various inspections can be performed by replacing the inspection head provided on the inner moving table 22 and the outer moving table 24 with a dimensional inspection head, an X-ray apparatus and a film or a temperature measuring head. .
[0044]
In addition, the inner moving table 22 and the outer moving table 24 are provided with a plurality of inspection heads having different inspection purposes, and each of the inspection heads performs the inspection at the same time, and the inspection information is taken into the control panel and processed. You can also
[0045]
Further, the case of inspecting a hollow cylindrical inspection object has been described. However, the storage device in the control panel 13 stores the shape information and inspection range information of the inspection object in advance, and the above-described information is based on this storage information. By automatically controlling the inspection apparatus, the inspection object can be automatically verified.
[0046]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an inspection apparatus capable of quickly and safely inspecting an object to be inspected and improving work efficiency.
[Brief description of the drawings]
1A and 1B show a configuration example of an embodiment when an inspection apparatus according to the present invention is applied to an ultrasonic transmission method, in which FIG. 1A is a plan view and FIG. 1B is a side view;
FIG. 2 is an enlarged view of the embodiment viewed from the rear end side.
FIG. 3 is a perspective view showing in detail a relationship between an inner guide rail supported by an inner rail support and an inner moving table in the same embodiment;
FIGS. 4A to 4D are explanatory diagrams respectively showing the setting procedure of the inspection apparatus in the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mobile vehicle 3 ... Test object 6 ... Rotating mechanism 11 ... Outer base 13 ... Control panel 14 ... Fixed base 15 ... Support 16 ... Inner rail support 17 ... Inner rail guide 20 ... ... drive motor 21 ... timing belt 22 ... inner moving table 23 ... outer guide rail 24 ... outer moving table 25 ... timing belt 26 ... ultrasonic probe head 27 ... air cylinder 28 ... adjustment screw

Claims (6)

An inner guide rail disposed through the inside of a long hollow object to be inspected, an outer guide rail disposed in parallel to the inner guide rail on the outside of the object to be inspected, and the object to be inspected A first support mechanism that is provided on one end side in the longitudinal direction and supports the inner guide rail so as to be movable to a retracted position in the longitudinal direction; and provided on the other end side in the longitudinal direction of the object to be inspected. A second support mechanism that supports the inner guide rail and can move to a retracted position in a direction perpendicular to the longitudinal direction of the object to be inspected before inspection, and moves along the inner guide rail and the outer guide rail. The inspection heads provided so as to face each other with the inspection object interposed therebetween, and the power from the driving source are transmitted to these inspection heads to synchronize with the longitudinal direction of the inspection object. Moving drive And reach mechanism, said inspection apparatus object to be inspected is rollably supported, and is characterized in that a rotating mechanism for rotating in synchronism with the movement of the test head. An inner guide rail disposed through the inside of a long hollow object to be inspected, an outer guide rail disposed in parallel to the inner guide rail on the outside of the object to be inspected, and the object to be inspected A first support mechanism that is provided on one end side in the longitudinal direction and supports the inner guide rail so as to be movable to a retracted position in the longitudinal direction; and provided on the other end side in the longitudinal direction of the object to be inspected. A second support mechanism that supports the inner guide rail and can move to a retracted position in a direction perpendicular to the longitudinal direction of the object to be inspected before inspection, and moves along the inner guide rail and the outer guide rail. An inner movable body and an outer movable body provided in a possible manner, and an inspection head that is provided so as to face each other with the inspection object sandwiched between the two moving bodies, and can be retreated with respect to the inspection object, Inside the inspection head A drive transmission mechanism for transmitting power from a driving source to the moving body and the outer moving body in synchronization with each other and moving the moving body in the longitudinal direction of the object to be inspected; An inspection apparatus comprising: a rotation mechanism that rotates in synchronization with the movement of the head. 3. The inspection apparatus according to claim 1, wherein the inspection apparatus has a data processing function of processing data obtained from the inspection head and determining the result, and moving the inner guide rail, the drive transmission mechanism, and the An inspection apparatus comprising control means for controlling a rotation mechanism. 4. The inspection apparatus according to claim 3, wherein shape information and surrounding shape information of the object to be inspected are stored in advance in a storage device provided in the control means, and the inner and outer guide rails, the first and first guide rails are based on the stored information. An inspection apparatus that controls an inspection apparatus main body on which a support mechanism, an inspection head, and a rotation mechanism are mounted. The inspection apparatus according to claim 1 or 2, wherein the inspection apparatus main body on which the inner and outer guide rails, the first and second support mechanisms, the inspection head, and the rotation mechanism are mounted is positioned and parallel to the object to be inspected. An inspection apparatus comprising an adjustment mechanism for adjusting the angle. 3. The inspection apparatus according to claim 1 or 2, wherein a plurality of inspection heads having different inspection purposes are provided as opposing inspection heads moving along the inner and outer guide rails, so that a plurality of inspections can be processed simultaneously. Inspection apparatus characterized by that.

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