SU930102A1 - Device for mounting flaw detector pickup on an article - Google Patents

Description

one

The invention relates to inspection tools and can be used in non-destructive testing installations in mechanical engineering, metallurgy and other industries.

A device for mounting a flaw detector sensor on a product containing a sensor holder mounted on a system of levers associated with a faceplate rotatably mounted in the housing, an elastic element lowering the levers with the sensor holder on the product 1 is known.

A disadvantage of this device is that it does not provide tracking of the sensor behind the product due to the instability of the resulting gaps and has many complex components and parts.

The closest in technical essence to the invention is a device for mounting a flaw detector sensor on a product, comprising a lever with a spring-loaded roller mounted on its end, rolling along the surface of the product, which, when the end of the product approaches, produces a sensor lift.

. and after passing the front end, the sensor is lowered onto the surface of the product, the carriage with the sensor, and the sensor carriage is provided with a locking lever to prevent the sensor from lowering until the end of product 2 passes past it.

The disadvantage of the known device is the inconvenience of the conditions for pressing the sensor to the controlled surface and, as a result, the accuracy and reliability of the control is low.

10 with beats of the test surface during movement of the product relative to the sensor due to curvature, ovality, etc. Therefore, the known device is unsuitable for controlling, for example, plastic coatings.

15 on the pipes.

The purpose of the invention is to improve the accuracy and reliability of control and simplify the design of the device.

Claims (2)

This goal is achieved by the fact that the device for installing the flaw detector sensor. on a product containing a lever with a spring-loaded roller mounted on its end. intended for contact with 393 goods, the carriage with the sensor, the lever of the device is made in the form of an unbalanced two shoulder arm, the roller is set to con. one arm of the rocker arm, and a carriage mounted on the other arm, while the axis of the rocker arm is offset relative to the axis of the sensor in the direction of movement of the tested product at a distance of at least half the width of the roller. In addition, the roller is spherical and inlaid with a central plastic insert. The drawing shows a diagram of the device. The device contains a lever 1, made in the form of a rocker arm unbalanced relative to the axis 2. At the end of the larger arm of the lever, a spring-loaded spherical roller 3 is installed, which is made inlaid with a central plastic insert 4. At the other end of the lever, a carriage 5 is installed, which provides a constant pressing of the sensor 6 to the product. The axis of rotation 2 of the ridicule lug relative to the axis of installation of the sensor 6 in the direction of movement of the test article 7 at a distance of not less than half the width of the roller. The device works as follows. In the initial position, the carriage 5 with the sensor 6 is on the designated (large) from the zone of contact of the sensor with the product arm of the lever 1, and the roller 3 on the other (small) shoulder. When moving the product 7, for example a pipe with a plastic coating, its front end passes by the sensor 6 without touching it, and comes into contact with the spherical surface of the side segment of the roller 3. As the pipe moves further, the roller 3 rotates the end of the pipe the metal surface of the segment, the lever 1 is lowered and rotated around the axis 2, the sensor 6 being supplied to the controlled surface of the product. After the roller 3 has entered the cylindrical surface of the pipe, the device rests on its surface with a plastic insert 4 of the roller, which eliminates the possibility of damage to the surface of the product. The sensor 6 on the carriage 5 is installed with the possibility of ensuring the constancy of the conditions of its pressing against the controlled surface, even under the conditions of its beating, on the joints and. tp, when dynamic loads are perceived by the roller 3 and the sensor supports (not shown in the drawing). At the same time, the sensor remains practically at a constant fixed pressing to the monitored surface, which ensures reliability and control and measurement. When the rear end of the pipe leaves the sensor, the end of the pipe slides along the spherical part of the other roller segment 3, coming off of it. With this, the system returns to its original position, in which the sensor 6 is retracted and protected, thereby, from damage by the next pipe. To control the products (pipes, rolled products, etc.) moving without rotation, the proposed device is located along the axis of movement of the products and works similarly to that considered. The device with the overall simplicity of the design allows for flaw detection and measurement of the parameters of the products, for example, control of the thickness of the anticorrosion coating. tees on pipes, in automatic mode. The device can be used to install electromagnetic, acoustic, radio wave, and other devices on the surface of a moving product. It can be used to inspect pipes as well as to control strip, rolled steel, etc. including insulating coating. The device eliminates damage to the insulating coatings on the products, since its contact with the surface being controlled is made with the help of plastic support rollers and a plastic band of a spring-loaded roller. Claim 1. Device for installing a flaw detector sensor on a product containing a lever with a spring-loaded roller installed at its end for contacting the product, a carriage with a sensor, which is designed to improve the accuracy and reliability of control and simplify the design , the lever is made in the form of an unbalanced double-arm rocker arm, the roller is mounted on the end of one arm of the rocker arm, and the other arm is equipped with a carriage, while the axis of rotation of the rocker arm is offset relative to the axis of the arm and snip the direction controlled movement of the article a distance of at least half of the roll width. 2. The device according to claim 1, characterized by the fact that the roller is spherical and type-c. central plastic insert. Sources of information taken into account during the examination 1. USSR author's certificate No. 502306, cl. G 01 N 27/82, 1976. 2. USSR author's certificate number 251897, cl. G 01 N 19/08 (prototype).