SU1578638A1 - Apparatus for automated ultrasonic checking of rolled stock - Google Patents

Abstract

The invention relates to devices for non-destructive testing and can be used in rolling control. The aim of the invention is to improve the quality of control due to the stabilization of the gap between the ultrasonic transducer and the product under test with the curvature of the latter. In the process of control, the controlled product is fed to two cylindrical support rods, after which the compressed air enters the lower cavity of the pneumatic cylinder, pushing up the pneumatic piston with the upper rod and the stop roller fixed on it, which acts on the controlled product from below. At the same time, the downward movement of the pneumatic cylinder and the inner cylinder connected to it, to which the carriage with the support rollers and the ultrasonic transducer is attached, occur. When the controlled product bends, the carriage, the ultrasonic transducer and the thrust roller synchronously track the bending of the product, thereby improving the quality of control. 1 hp ff, 3 ill.

Description

The invention relates to devices for non-destructive testing and can be used for ultrasonic testing of rolled products.

The aim of the invention is to improve the quality of control due to the stabilization of the gap between the ultrasonic transducer and the product under test with the curvature of the latter.

FIG. 1 shows a device for automated ultrasound hire monitoring; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section in FIG. 2

The device contains two parallel cheeks 1 with holes (not indicated) for an easy passage of the test item. The cheeks 1 are fixed on the base 2, which is installed on the foundation (not indicated). On the cheeks 1, it is fixed at a certain angle to the horizontal, determined by the conditions of control, on bolts 3, frame 4, which has the shape of a rectangle. In the opposite strips (not marked) of the frame 4, which are not in contact with the cheeks 1, there are two openings (not marked) into which two cylindrical support rods 5 are movably inserted. At the ends of these

the rods 5 have four studs 6, which ensure that the nuts 7 of the springs 8 are pressed against the outer surface of the frame bars 4. The brackets 9 are fixed to the middle of the supporting rods 5 fixedly with the upper ends of the brackets 9, and the lower ends are fixed to the flange 10 of the outer cylinder 11. The outer cylinder 11 is movably inserted the inner cylinder 12, to which the bottom end of which is fixedly fixed to the pneumatic cylinder 13, the pneumatic piston 14 of which is connected to a double-sided rod consisting of the lower 15 and the upper 16

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stocks. The lower rod 15 can move downward until it touches the stop 17 fixedly mounted on the lower plane of the flange 10. At the end of the upper stem 16, the support 18 is fixed, which can slide freely in the inner cylinder 12. To prevent rotation of the support 18 in the inner cylinder 12, a key is installed 19. On the support 18 there are two posts 20 on which a thrust roller 22 is mounted on the bearing with the help of axis 21. At the upper end of the inner cylinder 12 there is fixedly a flange 23 on which there are two brackets 24 connected a hinge with two axles 25 with a carriage 263 on which four support rollers 27 are mounted in bearings, as well as an electromagnet 28 with a converter 29. To limit the angle of rotation of the carriage 26 around the axes 25, stops 30 are fixed to the flange, in which the carriage 26 rests against in the zone of control of the rolled stock 31.

The device for automated ultrasound rolling control works as follows.

The base 2 is fixed on the foundation between the support rollers of the conveyor roller so that the vertical cheeks 1 are perpendicular to the longitudinal axis of the rolled steel 31. Depending on the control requirements, the frame 4 is fixed with the help of bolts 3 on the cheeks 1 at the right angle, ensuring the position of the converter 29 at an appropriate angle to the vertical (FIG. 2).

By moving the nuts 7 through the studs 6, the springs 8 are compressed on one side and loosened on the other side of the frame 4. At the same time, the support rods 5 slide in the frame 4

until the active part of the converter 29 is above the controlled surface of the product 31. When a controlled

similarity ts. When this support 18 slides in the inner cylinder 12.

When the product is shifted 31 in the direction perpendicular to the axis of symmetry

the product 31 to the control zone is a compressed view of the device, on the support rollers

the spirit enters the lower cavity of the pneumatic cylinder 13. Under the action of air pressure, the piston 14 together with the rods 15 and 16, the support 18, the uprights 20, the axle 21 and the stop roller 22 moves upwards until the support roller 22 contacts the article to be tested 31. On the other hand , under the action of air pressure, the pneumatic cylinder 13 together with the inner cylinder 12 and hinged on Llanz 23 using axles 25 carriage 26 with four supporting rollers 27 mounted on it, electromagnet 28 and npe by shaper 29 moves downward until the supporting roles touch 27 s with controlled product 31.

In the process of moving the rods 15 and 16 together with the piston 14 and the support 18, the key 19 holds the latter from turning.

Thus, when compressed air enters the lower cavity of the pneumatic cylinder 13, the carriage 26 is set and pressed with a certain force to the controlled product 31, which ensures a reliable and uninterrupted fit of the carriage 26 to the controlled product 31 during the movement of the latter through the conveyor roller table.

When the product 31 is displaced in the direction of the axis of symmetry of the device (for example, because of its curvature, inaccuracy of the conveyor roller. Etc.), the carriage 26 with support rollers 27, electromagnet 28, converter 29, and also the inner cylinder 12 with pneumatic cylinder 13 shifts in the appropriate direction, ensuring constant contact with the constant force of the support rollers 27 with the product 31 The thrust roller 22 together with the stop 18, the rods 15, is displaced accordingly. 16 and air piston 14.

When the product diameter is disconnected from the nominal value, the support rollers 27 with carriage 26, electromagnet 28, transducer 29, inner cylinder 13, thrust roller 22 with support 18, rods 15, 16 and pneumatic i piston 14 move in opposite directions: with increasing diameter, while decreasing

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27, a force is generated that is directed towards displacing the product 31. This force is transmitted to the carriage 26, from it to the brackets 24 and, accordingly, to the inner cylinder connected to them 12. From the inner cylinder 12 this force (it is perpendicular to the axis of rotation of the cylinders) the outer cylinder 11 connected to it, and from it, through the bracket 9, two cylindrical support rods 5, which are displaced along their axes of rotation in the corresponding direction, slippers in the holes of the frame 4. In the corresponding direction, are displaced and an outer cylinder 11, an inner 12, a retaining roller 22, a carriage 26 with a converter 29, which ensures an unchanged relative position of the converter 29 and the product under test 31. When the product 31 bends in a plane perpendicular to the symmetry axis of the device, the carriage 26 rotates around this axis together with brackets 24, flange 23, inner cylinder 12 (it rotates around the axis of the inner outer cylinder 1 1 that remains stationary), 5 pneumatic cylinder 13, pneumatic piston 14, rods 15 and 16, support 18 sec. Roller 22. To limit the angle of rotation of the inner cylinder 12 relative to the outer cylinder 11, an abutment is mounted (shown).

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When the article 31 bends in the plane of symmetry of the device, the carriage 26 rotates around the axes 25 of the brackets 24.

The angle of rotation (in (. Ray and, -. I wolmol ZO) is limited to UN ... F.1-- m 30, against which carriage 26 rests.

Thus, the carriage 26 has four degrees of freedom (linear displacements and rotation about two mutually perpendicular axes lying in a plane perpendicular to the longitudinal axis of the product 31) necessary to ensure a high stability of the gap between the product 31 and the converter 29.

When a control signal is received, the compressed air is released.

From the lower cavity of the pneumatic cylinder 13 and at the same time fed into the upper cavity of this pneumatic cylinder. The pneumatic piston 14 moves downward until the lower stem 15 contacts the stop 17, which is rigidly connected to the flange 10. Accordingly, the upper stem 16 moves downward with the support 18 (it slides in the inner cylinder 12) and the retaining roller 22, i.e. the latter is taken down from the controlled product 31. After that, under the action of air pressure, the pneumatic cylinder 13 moves up to the stop of the pneumatic piston 14 into the lower flange of the pneumatic cylinder 13. Together with the pneumatic cylinder 13, they move

-the inner cylinder 12 connected to it (slides in the outer cylinder 11), flange 23, stops 30, brackets 24, axles 25, carriage 26 s

supporting rollers 27, an electromagnet 28 with a converter 29. A carriage 24 with supporting rollers 27, an electromagnet 28 with a converter 29 retraction t-s upwards from a controlled product 31.

Claims (2)

1. Device for automated ultrasound inspection of rolled products containing a base, two fastened A-A 22 th L five five 0 0 spring-loaded cylindrical support rods mounted on it, a carriage with support rollers and an ultrasonic transducer mounted on the carriage, characterized in that, in order to improve the quality of control due to the stabilization of the gap between the ultrasonic transducer and the product under test with curvature of the latter, it is connected to the support rods two brackets, a flange rigidly connected to them, a stop rigidly connected to the flange and an outer cylinder mounted for movement in In an outer cylinder, an internal cylinder rigidly connected to the last pneumatic cylinder, a double-acting piston with a double-sided piston placed in the pneumatic cylinder, and a gland assembly connected to one end of the double-sided rod, the internal cylinder pivotally connected to the carriage, and the free end of the double-sided stem is installed with a kinematic effect on the stop . I 2. The device according to claim 1, wherein the gland assembly is made in the form of a support roller connected to one end of the support rod and fixed on it. 31 73 6-6 29 27