JPS5885152A - Non-destructive self-running inspection device for flow detection inner face of hole - Google Patents

Abstract

PURPOSE:To detect accurately a crack and a defective spot in the inner face of a hole by providing a pair of supporting links on the bottom section of a machine frame and installing a sprocket on a shaft mounted on each of both supporting links and installing caterpillars on both sprockets. CONSTITUTION:An inspection device consists of a pair of supporting links 2 mounted on the bottom section of a machine frame 1, and sprocket shafts for prockets 4 instaled on both supporting links 2 and capterpillars 6 installed on both sprockets. At the tip end 1a of the above mentioned machine frame 1 a retainer 19 is rotatably installed on a shaft. This retainer 19 is provided with a sensor support 23 that has a sensor 22. The above-mentioned catapillar 6 and retainer 19 can be driven by a prime mover 9 that is incorporated in the above mentiond machine frame 1. It is, therefore, not only possible to detect accurately a crack or defective spot by running by itself in the inner surface of the hole in a body to be inspected but also to handle the device easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides 1, for example, an inner hole surface (inner peripheral wall surface) of a cylindrical body or a tube body.
The present invention relates to a non-destructive self-propelled inspection device for internal hole surface flaw detection for detecting and inspecting electrical equipment and defective parts.

Conventionally, in a non-destructive inspection device for flaw detection on the inner hole surface of ζOIl, a drive device C equipped with an encoder b is installed in a machine frame 1 located on the outside of the object W to be inspected, as shown in 1st @. death,
A drive shaft d that reciprocates in the axial direction while rotating is horizontally attached to one side of this drive device [c, and one end of this drive shaft sd1
A holder f is provided with a plurality of (J) rolling rollers e, and this holder tK is a sensor having a sensor gz such as an ultrasonic probe, a globe coil for eddy current probe, or a sensor for leakage magnetic flux. The main body g is provided at a angle K so that it can rotate together with the holder f.

Therefore, the above-mentioned non-destructive testing device for internal hole surface flaw detection first inserts the senna main body 1 having the sensor g1 into the test mantle VO hole W1 formed by the pipe body or the cylindrical cape. By driving the drive device C located outside the inspection object W, this drive device C is inserted into the hole W1 in the axial direction at a constant speed while rotating the drive shaft d. Then,
Since the holder f, which is integral with the transmission shaft d, rotates while being supported by the transfer roller, when the sensor g of the sensing body g provided with the holder fK detects cracks or defects in the inner hole surface W1, At the same time, the encoder b is configured to detect and record the position of the defective part on the bore surface inspected by the sensor g1. In this non-destructive inspection device, the drive unit cK moves the transmission shaft back and forth in the axial direction, and on the other hand, the above-mentioned holder fK is installed, and a slot is inserted into the output shaft of the motor. , 4, which has a built-in puller and a nine-pulse detector 1.

Therefore, in this type of non-destructive inspection device for internal hole surface flaw detection, when the drive device 0 and the prime mover are driven, the sensor body is integrated with the holder f, as in the above-mentioned specific example. When the sensor g1 of No. 1 is rotated, it is moved in the direction of the #IC1 axis, and this sensor g1 moves the inner hole surface W! While testing, the position of the defective part on the inner hole surface vlK is detected and recorded using the encoder (9).

However, the above-described conventional non-destructive inspection equipment for inspecting inner hole surfaces is difficult to inspect the senna body 1 from the outside of the object W to be inspected. Since the drive shaft d is designed to drive the transmission shaft d, there is a risk that the transmission shaft d itself may be bent or twisted. It is not easy for the scale to detect flaws, and there is a risk of flaw detection leakage.

Furthermore, there is a Th between encoder 1 and the actual flaw detection position.
This makes it difficult to inspect rope wrinkles.

Furthermore, since the sensor g1 of the sensor body g is disposed at jl and ij between the rolling rollers e and e, when the preceding transfer roller e falls into the defective part of the inner hole surface W1, It is predicted that the sensor support may be damaged.7 The present invention has been made in view of the above-mentioned circumstances.1
A self-propelled crawler track is provided at the bottom of the machine frame, and a sensor support with a sensor is rotatably provided at the tip of the machine frame. The present invention provides a non-destructive self-propelled horizontal device for detecting cracks and defects on the inner hole surface, the purpose of which is to automatically detect the size and position of cracks and defects on the inner hole surface using the above-mentioned sensor. .

That is, 1. The feature of the present invention is that a pair of O support rods are provided at the bottom of the machine frame, each sprocket is mounted on both support rods, a rotor is wound around both sprockets, and A holding body is rotatably mounted on a shaft, a sensor support body equipped with a centimeter is provided on the holding body, and the crawler track and the holding body are driven by a prime mover built in the machine frame. .

The present invention will be described below with reference to an illustrated embodiment.

In Figures 7 to 7, the symbol / indicates a long and narrow machine frame that can be inserted into the hole of the object W to be inspected. The supporting rods 1 may be rotatably mounted on each rotating shaft 3, but these supporting rods 1 are usually temporarily fixed and do not rotate around the circumference υ of the rotating shaft J. It is maintained as such. or.

Each sprocket <4 is mounted on each end of both support rods λ by each rotating shaft jK, and footwear 6 such as a timing belt is wrapped around both of these sprockets and tohiro, for example. ing. Also, the support rod λ is 21! ! : Radial O1 installed on the above machine frame located directly above h? ! As shown in Fig. 6 and Fig. 6, each -λJ
The Y egg transfer roller l is the inner hole surface Wi of the upper inspection object WO.
On the other hand, it is supported and supported at three points together with the crawler belt 4.

On the other hand, the above-mentioned machine frame has a built-in 7-gen furnace such as Nokuru Smoke, and the output shaft of this prime mover Pa
A rotating shaft 10 is connected to the rotating shaft IO through a joint l/, and worm gears l- and -J4L/, 7 are connected to the rotating shaft IO.
are coaxially integrated. Further, the above-mentioned wheels are in mesh with each other by 1%, and the large gear /j mounted on the rotary shaft 3 is meshed with a small wheel 14 which is integrally coaxial with the above-mentioned sprocket t. (Xie 6, picture 6).

Therefore, if the above prime mover is driven, this prime mover? Since the output 4u'/a rotates, the rotation 1! connected to this output shaft 21 via the joint l/! The worm gear of bI10 is rotated by the worm gear saw, and the worm gear η and the rotor are connected to the worm gear saw by a canine gear integrated with the rotating shaft 3.
Rotate 1. And this large car/jK meshing small car
Since the sprocket rocket 4 of the wheel 14 rotates, the crawler track 6 wrapped around the sprocket 4 runs in the length direction of the hole in the object W to be inspected.

On the other hand, a bearing /'i is fitted in the tip /a of the machine frame l, and a holder /l integral with a spur gear it is rotatably mounted on this bearing /lK. , this spur gear/l
is provided so as to mesh with the above-mentioned wheel/J via a pinion. Further, a pulse detector using a slip link is provided inside the holder, and this pulse detector is configured to detect the position of the inner circumferential surface W1 of the upper inspected object WCI. It has become. Furthermore, the above-mentioned holding body/? A sensor support body equipped with a sensor is integrally provided at the end of the sensor support body n, and this sensor support body n is configured to rotate together with the above-mentioned holder l. In addition,
A guide roller body is attached to the senna support nK near the sensor. Furthermore, the sensor support n
The end face hksK has a single hole U as shown in Fig. 7! ! A hole diameter indicating scale of the object W to be inspected is engraved at -k of this hole. In addition, an indicator core is protruding from the above-mentioned hole correction, and this indicator core rotates the above-mentioned Aya support rod on each rotation axis (Joil) based on the hole diameter of the above-mentioned object W to be inspected. It is a trap so that the above-mentioned display eyes and arms can be indicated at a temporarily fixed position.

The effects of the configuration of the present invention will be described below. The present invention is inserted into an object W to be inspected in the form of a tube or cylinder whose inner diameter has been measured in advance.

Next, when the prime mover is driven, the worm gear l, worm wheel/41. Since the sprocket 6 is rotated via the large wheel /j and the small gear No. 7, the crawler belt 6 wound around the sedge rocket v is self-propelled in the length direction of the hole in the body W to be evaluated. On the other hand.

Since the rotary shaft 1ook wheel 13 rotates the spur gear /It via the pinion, the holder /9 integral with the flat gear /g is the bearing /? It rotates into a cylinder. Furthermore, since the sensor support n of this holder 19 rotates together, the sensor of the sensor support n moves in the length direction of the hole while turning the inner hole surface W1 of the object W to be inspected. - et al., inner hole surface W
In addition to detecting the defective part at 1, the position of the defective part can be detected by the pulse detector U using a slip link while moving on its own.

As described above, according to the present invention, a pair of support rods are provided at the bottom of a 1m frame 1, each sprocket is mounted on both support rods 2, and 4 tons of crawler tracks are wrapped around both of the sprockets. ,
The tip of the machine frame/AIC holder/is rotatably mounted on the shaft, and this holder l? sensor support V with a sensor
Since the motor 2 installed in the above-mentioned pressurization can drive the crawler track and the holder/9, the inside of the inner hole surface W1 of the sample body WO is However, it is not a mechanism that can accurately detect cracks and defects on the inner hole surface.
It has excellent effects such as easy handling and operation.

[Brief explanation of drawings]

Figures 1 to #IJ are diagrams for explaining conventional non-destructive testing equipment for internal hole surface flaw detection, and Figure 1 is a side view of the non-destructive self-propelled testing equipment for internal hole surface flaw detection according to the present invention. , FIG. 1 is a cross-sectional view of the same as above, FIG. 2 is a sectional view taken along the chain line B-BK in FIG. /-'-'- Machine frame, λ...support rod, da...sprocket. 1... Crawler track, t... Rolling roller, Ri... Prime mover, /Co... Worm gear, /4'... Worm wheel, /9... Holder + J/... Pulse detection vessel,
Number one...sensor, number three...sensor support.

Claims (1)

[Claims] A pair of support rods is provided at the bottom of the machine frame, each sprocket is mounted on both support rods, a crawler track is wrapped around both of these tin rockets, and a holder is rotatably attached to the tip of the machine frame. An inner hole surface characterized by 4I, in which a sensor support body equipped with a sensor is provided on the holding body, and the crawler track and the holding body are driven by a prime mover built in the machine frame. Non-destructive self-propelled inspection device for flaw detection.