JPH0535334Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a probe shoe for an automatic ultrasonic flaw detection device for steel plates, which is installed, for example, in the finishing line of a plate factory.

[Prior art and its problems]

For example, automatic ultrasonic inspection equipment is installed on the finishing line of a thick plate mill to detect flaws in steel plates.

This type of automatic ultrasonic flaw detection equipment consists of a probe installed on a trolley and a tracking mechanism. Flaw detection is performed by following the

For flaw detection around the four peripheries of a steel plate, as shown in the plan view of the probe shoe in FIG. Capture sensor 3
The edge sensor 4 detects the top, edge, and bottom of the steel plate, and the capture sensor 3 and edge sensor 4 capture and trace operations to minimize the dead zone of the flaw detection section. This is done by moving the cart or steel plate on which the flaw detection equipment is installed.

The capture sensor 3 and the edge sensor 4 are non-contact type sensors, and must be located within 2 to 3 mm from the surface of the steel plate from the viewpoint of detection sensitivity. The capture sensor 3 is attached to one side of the shoe body 1 by screwing, and the edge sensor 4 is attached so as to protrude outward from one side end of the shoe body 1.

The conventional probe shoe described above has the following problems.

(1) As mentioned above, the edge sensor 4 is attached so as to protrude outward from one side end of the shoe body 1, so when the probe shoe is moved, as shown in the partial schematic perspective view in FIG. , the edge of the steel plate 5 is easily damaged by being hit by burrs 11 during shear cutting or slag during gas cutting.

(2) The capture sensor 3 is affected by radiant heat from the steel plate at a high temperature of about 150°C, which increases the drift of the sensor's output voltage and tends to make it undetectable.

(3) Since the capture sensor 3 is attached to the shoe body 1 by screwing, it takes time to remove and adjust the sensor when replacing it, and the lead wire is likely to be damaged when screwing in.

(4) Since the probe 2 comes into contact with the steel plate 5 during flaw detection, it must be replaced periodically due to wear etc. At this time, the capture sensor 3 and edge sensor 4 must also be removed. , the above-mentioned problems associated with attachment and detachment occur.

[Purpose of invention]

Therefore, the purpose of this invention is to create an automatic ultrasonic wave sensor that does not cause damage to the edge sensor due to burrs or slag attached to the edge of the steel plate, that prevents the capture sensor from being affected by heat from the hot steel plate, and that is easy to replace. An object of the present invention is to provide a probe shoe for a flaw detection device.

[Summary of the idea]

This invention provides a probe shoe for automatic ultrasonic flaw detection equipment in which a capture sensor and an edge sensor are attached to a shoe body having a probe approximately in the center. It is detachably divided into two parts: a probe mounting part for attaching the sensor, and a sensor mounting part for attaching the capture sensor and the edge sensor, and the capture sensor is attached to one of the sensor attaching parts of the shoe body. The edge sensor is screwed onto a water-cooling jacket attached to a side part, and the edge sensor is attached to the other end of the sensor attachment part of the shoe body inside the edge of the shoe body, and The probe is characterized in that it is attached to a probe attachment portion of the shoe body.

[Structure of the idea]

Next, this invention will be explained with reference to the drawings. FIG. 1 is a schematic plan view showing one embodiment of this invention. As shown in the drawings, a capture sensor 3 is attached to one side of a shoe body 1 having a probe 2 at approximately the center thereof, and an edge sensor 4 is attached to the other side of the shoe body 1. ing.

As shown in the partial schematic perspective view of FIG. 2, the edge sensor 4 is attached to the other side of the shoe body 1 inside the edge of the shoe body 1 without protruding from the shoe body 1. Therefore,
Even if burrs 11 during shear cutting or slag during gas cutting adhere to the edge of the steel plate 5, the other end of the shew body 1 hits the burrs 11 and slag and bends or removes them, so the edge sensor 4 will not be damaged by hitting the burrs or slag.

As shown in a partially schematic perspective view in FIG. 3, the capture sensor 3 is a water-cooled jacket that has a capture sensor mounting hole 6 provided on one side of the shoe body 1 and a capture sensor screw hole 8 at its center. 7 is fixed with screws, and the capture sensor 3 is attached to the water cooling jacket 7 with screws 10. A cooling water supply hose 9 is attached to the water cooling jacket 7, and the capture sensor 3 is constantly cooled by the cooling water supplied from the hose 9.

As shown in FIG. 1, the shoe body 1 is divided into two parts: a probe mounting part 12 for mounting the probe 2, and a sensor mounting part 13 for mounting the capture sensor 3 and edge sensor 4. and both are screwed together. Therefore, replacement of the probe shoe due to wear can be performed independently, regardless of the capture sensor 3 and the edge sensor 4.

[Effect of idea]

As described above, according to this invention, the edge sensor will not be damaged by burrs or slag attached to the edge of the steel plate, and the operation of the capture sensor will not be unstable due to the influence of radiant heat from the high-temperature steel plate. Many useful effects are brought about, such as the capture sensor being easily attached and detached, and the probe being replaceable regardless of the capture sensor or edge sensor.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing one embodiment of this invention, FIG. 2 is a schematic perspective view of the edge sensor portion,
FIG. 3 is a schematic perspective view of a capture sensor section, FIG. 4 is a schematic plan view of a conventional probe shoe, and FIG. 5 is a schematic perspective view of a conventional edge sensor section. In the drawings, 1...Shu body, 2...Probe, 3...Capture sensor, 4...Edge sensor, 5...Steel plate,
6... Hole, 7... Water cooling jacket, 8... Screw hole, 9... Hose, 10... Screw, 11... Burr, 12... Probe mounting part, 13... Sensor mounting part.

Claims (1)

[Utility Model Claims] A probe shoe for an automatic ultrasonic flaw detector, in which a capture sensor and an edge sensor are attached to a shoe body having a probe located approximately in the center, wherein the shoe body is detachably divided into two parts: a probe mounting section for mounting the probe, and a sensor mounting section for mounting the capture sensor and the edge sensor, the capture sensor is screwed into a water-cooled jacket attached to one side of the sensor mounting section of the shoe body, the edge sensor is attached to the other side of the sensor mounting section of the shoe body, inside the edge of the shoe body, and the probe is attached to the probe mounting section of the shoe body.