RU1826060C - Article inspection device - Google Patents

Abstract

The invention relates to the field of non-destructive testing of products by ultrasonic or flux-probe method and can be used in various industries for flaw detection, mainly unstressed products. The purpose of the invention is to increase the productivity of inspection of non-stretched products or annular seams while increasing the service life of the drive by facilitating the operating mode of the device . The goal is achieved in that the device for monitoring products is equipped with three drives and a pulley with teeth on its inner surface, the nut is made with V-grooves around the perimeter of its outer surface, with a smooth through hole, the axis of which is located at an angle to the axis of the threaded hole, and the diameter exceeds the diameter of the lead screw and with an annular groove on one of its ends, the pulley is mounted on the nut, its tooth is located in the V-shaped grooves of the nut. The first drive is mounted on the base and kinematically connected to with a nod, the second and third drives are made in the form of two-way cylinders mounted on the frame, the rod of the two-way cylinder of the second drive is made V-shaped and kinematically connected to the side walls of the ring groove of the nut, the rod of the two-way cylinder of the third drive is rigidly connected to the holder and is parallel to the guide and guide and spindle rigidly between each other 3 il

Description

The invention relates to the field of non-destructive testing by ultrasonic or flux-probe methods and can be used in various industries for flaw detection of product quality, mainly unextracted, for example, nipples and couplings of drill joints, as well as welds (ring) in pipe blocks and the like products x thermal and nuclear power plants

The purpose of the invention is to increase the performance of control and increase the service life of equipment

In Fig 1 shows the proposed device, in Fig 2 - node I in Fig 1 in Fig 3 - electrical diagram of the device

The device for product inspection contains installed on the base 1 frame 2, base rollers forming a prism, the drive mechanism of the product in the form of a drive stand 3 with engine 4. and the first drive in the form of an engine 5 connected by a gear to a nut 6 mounted on the frame 2. On the frame2 in holes 7 and 8 are installed guide 9 and the screw screw W interconnected by a strap 11 g you

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filled in the form of a guide holder 12. A second drive is installed on the frame 2 in the form of a two-way pneumatic cylinder 13, the rod-shaped rod 14 of which is installed in the alve groove 15 of the nut 6. In addition, a third drive is installed on AMA 2, made in the form of a second two-way cylinder 16 , the stem 17 of which is mounted on the holder 12.

A transducer 18 is mounted on the holder 12 with the possibility of contacting a controlled product 19 located on the drive stand 3.

A fourth drive is mounted on the bracket 20 of the holder 12, made in the form of an engine 21, a pulley 22 of which, for example, is connected by a V-belt drive to a pulley 23, is rigidly fixed to the spindle 10.

The motor 5 of the first drive is connected to the nut 6 through a pulley 24, connected by a chain to a pulley 25, the hub of which is gear-shaped with teeth 26 located in the V-shaped grooves 27 of the nut 6.

To limit axial and radial movement, the drive shafts 25 are limited by rails 28 mounted in the fork brackets 29 on the frame 2 and in contact with the drive pulley 25 by means of annular guides 30 made in the form of grooves on the side surfaces of the pulley 25.

The nut 6 threaded hole 31 is in contact with the lead screw 10 and is aligned with its longitudinal axis with the longitudinal axis 32 of the lead screw 10. Additionally, through the nut 6 is made through smooth (without thread) hole 33 with a diameter slightly larger than the diameter of the lead screw 10, which is made under a certain angle to the threaded, the longitudinal axis 34 of which is located at an angle, for example, 13-20 ° to the longitudinal axis of the threaded hole 31.

Both holes in the nut mate in a line so that the smallest distance between the mating lines slightly exceeds the outer diameter of the spindle. At this angle of inclination of the longitudinal axes of the threaded and smooth holes, they are selected from the condition that the threaded hole of the screw 10 has a sufficient angle of coverage (the larger the angle between the said axes, the larger the angle of coverage), i.e. the more force is applied to the thread of the nut, the greater the angle of coverage should be and, therefore, the greater the angle between the mentioned axes of the holes of the nut 6.

All four drives are controlled by control unit 35: the motor 5 of the first drive is controlled by contacts 36 and 37; second drive (pneumatic cylinder

13) is controlled by a two-position slide valve 38 connected to a pressure medium (not shown) and contacts 39 and 40 of block 35; the third one with water (two-way cylinder 16) is controlled by a two-position (two-way) slide valve 41 connected to the pressure medium line (not shown) using contacts 42.43 of block 35, and the motor 21 of the fourth

the actuators are controlled by contacts 44 and 45. To disable the actuators in the extreme positions, shutoff sensors are installed on the guide 9, made, for example, in the form of limit switches 46 and 47.

The control unit 35 (Fig. H) is made, for example, in the form of a control panel and an electronic cabinet (not shown in hell), in which control buttons and relays (electromechanical or electronic) are placed, each

of which is connected to its contact. The control channel of the spool switch 38 consists of a first circuit parallel to the electric main, consisting of buttons 48 and 49 connected in series. Contacts 50, a relay induction coil 51 with its contacts 39, and a second circuit made of buttons 52 and 53 connected in series contacts 54, induction coil

55 relays with contacts 40.

Two parallel circuits are installed in the engine control circuit 5 of the first drive: in the first, buttons 56 and 57, contacts 58 and

induction coil 59 of the relay with contacts 36; buttons 60 and 61, contacts 62 and an induction coil 63 with contacts 37 are sequentially installed in the second one.

Two parallel electrical circuits are installed in the engine control circuit 21 of the fourth drive: the first is composed of sequentially connected buttons 64 and 65, contacts 66, an induction coil 67 of the relay with contacts 44; second circuit made up

from the series-connected buttons 68 and 69, contacts 70 of the inductive coil 71 of the relay with contacts 45.

The slide switch control circuit consists of two parallel

circuits: the first circuit consists of two electrically connected two buttons 72, contacts 74, an induction coil 7/5 with a relay with contacts 42; the second circuit consists of two buttons 76 and 77 connected in series, electrically connected,

contacts 78, induction coil 79 of the relay with contacts 43.

The buttons 49, 53, 57, 61, 65, 69. 73, 77 are equipped with interlocking contacts 80, 81, 82, 83, 84, 85, 86. 87, respectively.

The mentioned electric circuits are connected with wires 88 and 89, grounded grounding conductors 90 and 91 on the base 1 and a drive 92 in the electric circuit of limit switches 46 and 47 with contacts 93 and 94, respectively, each of which is equipped with pushers 95 and 96,

Device for monitoring products operates as follows.

A controlled item 19 is installed on the roller support stand 3, the engine 4 is turned on, as a result of which the roller support 3 starts to rotate the product 19. At the same time, the transducer 18, which is mounted on its end and connected to the flaw detector, is brought into the control zone by means of holder 12 ( not shown). The holder 12 with the converter 18 is supplied to the control zone of the product 19 by one or more drives. In the first case, using a second drive, namely, a two-way pneumatic cylinder 13, the nut 6 is disengaged from the threaded engagement (threaded hole 31) with the lead screw 10 and a smooth hole 33 is installed coaxially with the lead screw 10. Press the button 49, as a result of which normally closed the contacts of the button 48 and the contacts 50 include an induction coil 51, a relay, the contacts 39 of which of the control unit 35 close the electrical control circuit of the slide switch 38, while the button 49 blocks the relay contacts 80 with the inductive coil 51, and the clock cycles 54 in this case are opened, which prevents the relay with the inductor 55 from being turned on. The closure of the contacts 39 leads to the displacement of the zoological spool (not shown) in the spool switch 38 so that the pressure medium line is connected to the cavity of the cylinder 13, which provides retraction of the L-shaped rod 14 in the cylinder body 13. At the same time contact 36 is closed by this control unit 35 and the first drive motor 5 is turned on, the rotation of which through the pulley 24 and the drive is transmitted to the drive pulley 25. This pulley 25 transmits the rotation to nut 6, because with the latter, it is in gearing by means of the teeth 26 of the toothed hub of the pulley 25 and their corresponding V-shaped troughs 27. In this case, the nut 6 begins to rotate on the lead screw 10 and in the frame 2 mounted on the base.

After the first revolution, the nut 6 is rotated laterally by means of a moving cylinder 13, mounted on the frame 2, of an L-shaped rod. This leads to the displacement of the axis 34 of the smooth hole 33 in place of the axis of the threaded hole 31, while the longitudinal axis of the threaded hole is installed under the longitudinal axis 32 of the running 10, the axis 34 of the smooth 0 hole coincides with the longitudinal axis of the screw 10, the output of the hex 6 from the threaded engagement with the lead screw 10 by the control unit 35, a command is issued to close the cocktail box 42, then press

5 of the button 73, as a result of which the wires 89 and 92 are connected by an electric circuit of the normally closed contacts of the button 72, the contacts 74 and the windings of the relay inductors 75 are closed, as described above.

0 interlocking contacts 86 and contacts 78 are opened in the circuit of the coil 79, as a result, the spool switch 41 connects the ma (Istral - working medium and under pressure with that cylinder cavity 16

5 of the third Drive, which provides the extension of the rod 17, rigidly mounted on the holder 12. As a result, the nut 6 is removed from the threaded fastener with the spindle 10, the latter, together with She0 of the guide 9, will begin to move in the corresponding holes 8 and 7 2 into the control zone using the rod 17 of the cylinder 16, mounted on the frame 2. This is because they are connected to the holder 12,

5 and the threaded spindle and the guide screw additionally with a bar 11. This movement will continue until the third drive is turned off, that is, until the position sensor 47 (limit switch) trips.

0 which instructs the control unit 35 to turn off the spool switch by opening the contacts 94 with the pusher 96, the wire 92 is provided, which turns off 1 all the relay coils and their contacts switched on earlier, including opening the contacts 42: In this case, the spool closes the medium line, for example, by a spring drive (not shown), in

As a result, press button 57, which leads to the connection of wires 88, 92. The movement of the holder 12 with the converter 18 is stopped through the normally closed button 56 and contacts 58 and the induction coil 59 of the relay of the control unit 35 is turned on, while contacts 36 are closed. this instructs the shutdown of the first drive, i.e. the control unit 35 instructs to open the contact 36, which can then be turned off much earlier (after disengaging the nut with screw 10).

In order to carry out the second embodiment, the holder 12c is moved by the transducer 5 by the body 18 to the control zone of the article 19 located on the stand 3, as follows.

In this case, the L-shaped rod 14 of the pneumatic cylinder 13 of the second drive must 10 be fully extended, for this, by the command of the block control unit 35, by pressing the button 53, the electric circuit of the wires 88 is closed and the inductor 55 is activated and its relay closes the AO cycles and locking contacts 81 of button 53, in this case, contacts 50 in the relay circuit with inductance coil 51 are opened, contact 40 is closed, which supplies the working medium through slide valve 20 to switch 38 to the cavity of cylinder 13 that allows extension e completely L-shaped rod 14, which ensures the alignment of the longitudinal axis of the threaded hole 31 with the longitudinal axis 32 of the lead screw 25, while, as in the previous case, the end face of the L-shaped rod 14 is constantly in the annular guide 15 nuts 6, providing a lateral reversal of the latter. After that, the electric motor 5 of the first drive or the electric motor 21 of the screw drive is turned on 30 and, simultaneously with one of them, the two-way cylinder 16 of the third drive is turned on. These inclusions are carried out by the control unit 35, i.e. as in the first case, contacts 36 or 44 and contact 43 are closed. As a result, the nut 6, rotating, starts to move the screw 10 with its drive and, together with the stem 17, the holder 12 with 40 converter 18 to the control zone, if the contact 36 of the motor 5 is open and the contact 44 of the motor 21 is closed, the torque of which is transmitted through its pulley 22 and the transmission to the drive pulley 23 and then 45 to rotate the spindle 10, which in this case will rotate relative to the fixed nut 6, and together with the rod 17 cylinder 16 will move erzhatel 12 with transducers 50 in Lemma control zone. The movement will continue until the position sensor 47 (limit switch) is turned on or a command is issued by the operator to turn off the movement control unit 35. 55 As a result, contacts 36 (44) open, which turns off the motor 5 (21) and stops the rotation of nut 6 (screw 10), and when contact 44 is closed, which in this case opens, it turns off the motor 21 and simultaneously the contact 42 of the slide switch 41 opens, the slide of which returns to its original position, which leads to the overlapping of the working fluid line with the cavity of the cylinder 16.

After the transducer 18 is installed in the control zone, it is brought to the surface of the rotatable monitored article 19, the necessary speed of the holder 12c is set by the transducer 18 relative to the surface of the monitored article 19. To this end, using the regulators (not shown), a certain difference in the rotational speeds of the drive pulleys 25 and 23, respectively, of nut 6 and lead screw 10. The pulleys 24 and 22 are driven in one direction by the engines 5 and 21 of the drives of the first and fourth, simultaneously with this includes a third drive (cylinder 16). For this, the contacts 37,45 and 43 are closed by the control unit 35. In this case, the aforementioned drives are reversed and the converter 18 is moved relative to the rotating product 29 by a stand 3 by means of a motor 4.

A defect search (not shown) is carried out along a helix. In this case, the lead screw 10 and the guide 9 will move relative to the frame 2 with the holder 12 and the strap 11 in the holes 8 and 7. This movement ends when the limit switch 46 is activated, the contacts 93 are opened by the pusher 95, the wire circuit 92 is broken, a command is issued to switching off the contacts 37, 45 and 43 by the control unit 35. In this case, the three drives are turned off and the monitoring cycle can be repeated, i.e. the monitored product 19 is removed from the stand 3, and in its place is set another, subject to control. The holder with the converter in this case is moved by one of the above methods into the control zone with the contacts 93 locked and the contacts 94 of the limit switch 47 locked.

During the rotation of the drive pulley 25, the latter can move in the radial and axial directions. To limit this movement, rollers 28 are mounted in the annular grooves 30 and are mounted in the fork brackets 29 that are mounted on the frame 2.

Claims (1)

The claims A device for monitoring products, comprising a base, mounted on the base of the base rollers forming a prism, a drive mechanism for the product, a frame mounted on the base, a holder, a transducer mounted in the holder with the ability to move perpendicular to the base of the base rollers, the mechanism for moving the holder made in the form of a guide rigidly connected to the holder and installed in the frame with the ability to move parallel to the axes of the base rollers, a drive pair of a lead screw - nut, lead screw nt which is mounted in a frame with the possibility of moving parallel to the guide and rigidly connected to the holder, and the drive of the rotor screw, characterized in that, in order to increase the control performance and increase the service life of the equipment, it is equipped with three drives and a pulley with teeth on its inner surface nut made 0 5 0 with V-grooves around the perimeter of its outer surface, with a smooth through hole, the axis of which is located at an angle to the axis of the threaded hole, and the diameter exceeds the diameter of the running screw, and with an annular groove on one of its ends, the screw is mounted on the nut, its tooth are located in the V-shaped grooves of the nut, the first drive is mounted on the base and kinematically connected to the pulley, the second and the drive are made in two-way cylinders mounted on the frame, the rod of the two-way cylinder of the second fit is made L-shaped and kinematically connected with the side walls of the annular groove of the nut, the rod of the two-way cylinder of the third drive is rigidly connected to the holder and is parallel to the guide, and the guide and spindle are rigidly interconnected / FIG. Z 38 % H - h Pefc .. and L «J | -I A A A with. 45 H & I b % V v1 v f-, f 6L l § / Y & S / Y in, / % Ј N