A steel structure weld residual stress detection device and use method

Abstract

The application discloses a kind of steel structure weld residual stress detection device and use method, wherein steel structure weld residual stress detection device includes roller, mounting seat and working unit, the working unit includes infrared feedback device, stress detection device, detection mark device and telescopic device, the working unit rotates along with roller, and infrared detection, stress detection and detection mark are carried out to steel structure weld simultaneously.The application solves the inconvenience caused by the need for manual overturning of steel material and re-detection when the steel material is too large or not easy to turn over, and the need for re-adjustment of the position of steel material when detecting multiple welds, as well as the inability to capture the position of the weld and the inability to visually observe the position of the weld that has been detected stress, and the effect of stress detection on irregular welds.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of weld residual stress detection, in particular to a steel structure weld residual stress detection device and use method. BACKGROUND

[0002] Welding is a commonly used method of metal connection, by heating two or more metal parts to the melting point, making it melt and form a connection during cooling, but due to uneven distribution of heat and different materials thermal expansion coefficient difference, etc. After welding, residual stress will be left at the weld, that is, weld residual stress. Weld residual stress has an important influence on the performance and life of the welded joint, which can cause deformation, cracking and other problems of the welded joint during use, and even cause damage to the welded joint. Therefore, accurate detection of welding residual stress is crucial to ensure the quality of the welded joint.

[0003] CN118209631A discloses a steel structure welding residual stress detection turnover tool, which can turn over the detection unit, avoiding the problems caused by the difficulty of turning over large steel structures.

[0004] However, through exploration, it is found that the technical solution still has at least the following defects:

[0005] In actual use, although the above-mentioned device can turn over the detection unit, some special steel material welds are irregular. The above-mentioned device is not convenient for stress detection of irregular welds, cannot adjust the position of the working unit, and when detecting multiple welds, the position of the steel material needs to be adjusted again. At the same time, it cannot accurately capture the weld position and cannot intuitively observe which weld position has been detected, which brings inconvenience to detection. SUMMARY

[0006] To solve the above technical problems, the basic idea of the technical solution of the present application is:

[0007] The utility model provides a kind of steel structure weld residual stress detection device, including roller, mounting seat and working unit, the roller is arranged above mounting seat, the working unit includes infrared feedback device, stress detection device, detection mark device and telescopic device, the telescopic device includes telescopic rod and telescopic sleeve, the telescopic sleeve bottom end is connected with the inside of roller, the telescopic rod is arranged in telescopic sleeve, the telescopic rod and telescopic sleeve slidingly connect, the stress detection device is arranged in telescopic rod, the infrared feedback device is fixedly arranged in one side of stress detection device, the detection mark device is arranged in the other side of stress detection device, the design of roller and mounting seat makes that roller can be circumferentially rotated along mounting seat, working unit is circumferentially rotated along with roller, different positions of weld can be detected, the design of telescopic device makes that working unit can adjust the distance between weld, so that detection is more accurate and reliable, reduce error, working unit includes infrared feedback device, stress detection device and detection mark device, so that steel structure weld residual stress detection device can be positioned, detected and marked simultaneously to weld.

[0008] Further, the inside of the roller is provided with a chute, a lead screw is arranged in the chute, one end of the lead screw is provided with a lead screw motor, the rotating shaft of the lead screw and the lead screw motor is fixedly connected, the bottom end of the telescopic sleeve is hinged to the lead screw, an annular rack is arranged outside the roller, the design of the lead screw in the chute and the lead screw motor at one end of the lead screw makes that the working unit can slide along the chute, the position along the axial position of the roller is changed, the design that the bottom end of the telescopic sleeve is hinged to the lead screw makes that the working unit can rotate along the vertical direction of the lead screw, which is convenient for aligning the weld position, and when detecting multiple welds, the position of the material to be measured does not need to be adjusted.

[0009] Further, it further includes a mounting seat and a bevel gear, a motor is arranged on the side surface of the mounting seat, the circular arc bottom surface of the mounting seat is open, the bevel gear is arranged on the end surface of the rotating shaft of the motor, the annular rack is engaged with the rotating shaft of the motor through the bevel gear, the circular arc bottom surface of the mounting seat is open, and the annular rack is engaged with the rotating shaft of the motor through the bevel gear, so that the rotation of the roller along the mounting seat becomes controllable, the rotation angle of the roller is controlled by the motor, and then the position of the working unit is controlled.

[0010] Further, the infrared feedback device includes an infrared probe and a feedback system, the feedback system is arranged above the infrared probe, the feedback system and the infrared probe are fixedly connected, the design of the infrared feedback device makes that the position of the weld can be captured before detection and fed back to the feedback system.

[0011] Further, the stress detection device comprises a detection probe and a protection plate, the protection plate is arranged below the detection probe, the protection plate and the detection probe are fixedly connected, the protection plate is designed to keep a constant distance between the stress detection probe and the weld, so that the detection result is more accurate, and the detection error caused by the change of the detection distance is reduced.

[0012] Further, the detection marking device comprises a marking probe and a pigment tank, the pigment tank is arranged above the marking probe, the pigment tank and the marking probe are fixedly connected, the detection marking device is designed to mark the weld that has been detected during the detection of the weld, so as to avoid the detection error caused by repeated detection and missed detection.

[0013] Further, the marking probe protrudes from the infrared probe and the detection probe, the design of the marking probe protruding from the infrared probe and the detection probe makes the detection position more accurate, and reduces the detection error caused by the deviation of the detection position.

[0014] Further, it further comprises a supporting unit, the supporting unit comprises a base and a supporting block, the supporting block is fixedly arranged above the base, the mounting seat is arranged above the base, the mounting seat is arranged on the inner side of the supporting block, the design of the supporting unit makes the steel material can be reasonably placed in the detection position, and prevents unnecessary detection error caused by unreasonable placement position of the steel material.

[0015] Further, it further comprises a clamping unit, the clamping unit comprises a fixed block, a fixed screw, a fixed nut, a fixed piece and a screw rod, the fixed piece is L-shaped, one end of the fixed piece extends into the interior of the fixed block, one end of the fixed screw is fixedly connected with the side surface of the supporting block, the other end of the fixed screw penetrates through the fixed block, the fixed nut is arranged on the outer side of the fixed block, the fixed nut and the fixed screw are screw connected, the screw rod penetrates through the fixed piece, one end of the screw rod extends into the interior of the fixed block, the design of the clamping unit makes the steel material can be fixed in the detection position, avoids the position deviation of the steel material during the detection process, the design of the fixed screw and the fixed nut ensures the stability of the steel material in the horizontal direction, and the design of the screw rod ensures the stability of the steel material in the vertical direction.

[0016] Further, the spring is fixedly connected to one end of the telescopic rod, and the other end of the spring is fixedly connected to the bottom of the telescopic sleeve, the bottom end of the telescopic sleeve is provided with a hinged piece, the side surface of the hinged piece is provided with a deflection motor, the design of the spring enables the working unit to be attached to the weld, and the distance between the working unit and the weld is constant, so that the measurement error caused by the change of the distance between the working unit and the weld is avoided, the design of the hinged piece enables the working unit to rotate relative to the sliding groove, and the design of the deflection motor enables the working unit to rotate around the lead screw during the working process, so that the working unit is always perpendicular to the to-be-measured part.

[0017] A steel structure weld residual stress detection device and a use method, comprising the following specific steps:

[0018] S1, the steel material is placed above the supporting block, and is adjusted to a suitable position, the fixed nuts at both ends are adjusted, the fixed screw and the fixed nut jointly act on the steel material to limit the movement of the steel material in the horizontal direction, the screw is adjusted to limit the movement of the steel material in the vertical direction, so that the steel material is fixed;

[0019] S2, the motor is adjusted, the motor drives the bevel gear on the end surface of the motor rotating shaft to rotate, the bevel gear is engaged with the ring gear, so that the drum is driven to rotate along the mounting seat, the working unit is moved to a suitable longitudinal position, the lead screw motor is adjusted, the rotating shaft of the lead screw motor rotates, and the working unit is driven to move along the sliding groove direction, so that the working unit is moved to a suitable horizontal position, until the infrared probe is aligned with the starting position of the weld, so that the feedback system can capture the accurate position of the weld, and the preliminary adjustment is completed;

[0020] S3, the positions of the spring and the telescopic rod are adjusted, so that the infrared probe and the detection probe are aligned with the weld, and the marking probe is attached to the weld;

[0021] S4, the infrared feedback device, the stress detection device and the detection marking device are started at the same time, the infrared feedback device accurately positions the position of the weld, the feedback system receives the feedback signal, the stress detection device starts to move along the weld path fed back by the infrared feedback device, and the stress of the weld is detected, and the detection marking device marks the position of the weld that has been detected;

[0022] S5, after the detection is completed, the infrared feedback device, the stress detection device and the detection marking device are turned off, the spring and the telescopic rod are adjusted, so that the infrared probe, the detection probe and the marking probe are separated from the weld, the fixed nut and the screw are adjusted, so that the steel material is separated from the clamping unit, and finally the steel material is removed.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] The present application can flip the work unit, avoid the difficulty of steel material difficult to flip for detection, and can capture the weld position and mark the weld position which has been detected stress, and can detect the stress of irregular weld. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is a perspective view of the detection device;

[0026] Fig. 2 is a structural schematic view of the clamping unit;

[0027] Fig. 3 is a structural schematic view of the cooperation of the roller, the mounting seat and the detection unit;

[0028] Fig. 4 is a front view of the structural schematic view of the cooperation of the sliding groove and the detection unit;

[0029] Fig. 5 is a side view of the structural schematic view of the cooperation of the sliding groove and the detection unit;

[0030] Fig. 6 is a front view of the structural schematic view of the detection unit;

[0031] Fig. 7 is a front view of the structural schematic view of the detection unit.

[0032] Wherein: 1. base, 2. support block, 3. fixed block, 4. fixed screw, 5. fixed nut, 6. fixing piece, 7. screw, 8. roller, 9. ring gear, 10. mounting seat, 11. motor, 12. bevel gear, 13. sliding groove, 14. lead screw, 15. lead screw motor, 16. infrared feedback device, 161. infrared probe, 162. feedback system, 17. stress detection device, 171. detection probe, 172. protection plate, 18. detection marking device, 181. marking probe, 182. pigment box, 19. spring, 20. telescopic rod, 21. telescopic sleeve, 211. hinged piece, 212. deflection motor, 22. steel material, 23. weld. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail below with the accompanying drawings and examples, so that the realization process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented.

[0034] Example one

[0035] As Figs. 1 to 7The utility model discloses a kind of steel structure weld residual stress detection devices, including roller 8, mounting seat 10 and working unit, the roller 8 is arranged in the upper of mounting seat 10, the working unit includes infrared feedback device 16, stress detection device 17, detection mark device 18 and telescopic device, the telescopic device includes telescopic rod 20 and telescopic sleeve 21, the bottom end of telescopic sleeve 21 is connected with the inside of roller 8, the telescopic rod 20 is arranged in telescopic sleeve 21 inside, the telescopic rod 20 and telescopic sleeve 21 slidingly connect, the stress detection device 17 is arranged in telescopic rod 20 inside, the infrared feedback device 16 is fixedly arranged in one side of stress detection device 17, the detection mark device 18 is arranged in the other side of stress detection device, the infrared feedback device 16 and detection mark device 18 are symmetrically arranged relative to stress detection device 17, the inside of roller 8 is provided with sliding groove 13, the sliding groove 13 is provided with lead screw 14, one end of lead screw 14 is provided with lead screw motor 15, the rotating shaft of lead screw 14 and lead screw motor 15 is fixedly connected, the bottom end of telescopic sleeve 21 and lead screw 14 are hinged, the outer side of roller 8 is provided with annular rack 9, further including mounting seat 10 and helical gear 12, the side of mounting seat 10 is provided with motor 11, the circular arc bottom surface of mounting seat 10 is opened, the helical gear 12 is arranged on the rotating shaft end surface of motor 11, the rotating shaft of motor 11 is engaged with annular rack 9 through helical gear 12, the infrared feedback device 16 includes infrared probe 161 and feedback system 162, the feedback system 162 is arranged above infrared probe 161, the feedback system 162 and infrared probe 161 are fixedly connected, the stress detection device 17 includes detection probe 171 and protection plate 172, the protection plate 172 is arranged below detection probe 171, the protection plate 172 and detection probe 171 are fixedly connected, the detection mark device 18 includes mark probe 181 and pigment tank 182, the pigment tank 182 is arranged above mark probe 181, the pigment tank 182 and mark probe 181 are fixedly connected, the mark probe 181 protrudes from infrared probe 161 and detection probe 171, further including support unit, the support unit includes base 1 and support block 2, the support block 2 is fixedly arranged above base 1, the mounting seat 10 is arranged above base 1, the mounting seat 10 is arranged on the inner side of support block 2, further including clamping unit, the clamping unit includes fixed block 3, fixed screw 4, fixed nut 5, fixed part 6 and screw 7, the fixed part 6 is L-shaped, one end of fixed part 6 extends into the inside of fixed block 3, one end of fixed screw 4 and the side of support block 2 are fixedly connected, the other end of fixed screw 4 penetrates fixed block 3, the fixed nut 5 is arranged on the outside of fixed block 3, the fixed nut 5 and fixed screw 4 are threadedly connected, the screw 7 penetrates fixed part 6, one end of screw 7 extends into the inside of fixed block 3, further including spring 19, one end of spring 19 is fixedly connected telescopic rod 20,The other end of the spring 19 is fixedly connected to the bottom of the telescopic sleeve 21, and the bottom end of the telescopic sleeve 21 is provided with a hinged part 211, and the side surface of the hinged part 211 is provided with a deflection motor.

[0036] Embodiment two

[0037] As Figs. 1 to 7 shown, a steel structure weld residual stress detection device and use method, comprising the following steps:

[0038] S1, the steel material 22 is placed above the support block 2, and is adjusted to a suitable position, the fixed nut 5 at both ends is adjusted, the fixed screw 4 and the fixed nut 5 jointly act on the steel material 22, the movement of the steel material 22 in the horizontal direction is limited, the screw 7 is adjusted, the movement of the steel material 22 in the vertical direction is limited, so as to fix the steel material 22;

[0039] S2, adjust the motor 11, the motor 11 drives the bevel gear 12 on the end surface of the motor 11 to rotate, the bevel gear 12 and the ring gear 9 are engaged, so as to drive the roller 8 to rotate along the mounting seat 10, move the working unit to a suitable longitudinal position, adjust the lead screw motor 15, the rotating shaft of the lead screw motor 15 rotates, drive the working unit to move along the direction of the sliding groove 13, move the working unit to a suitable horizontal position, until the infrared probe 161 is aligned with the starting position of the weld 23, ensure that the feedback system 162 can capture the accurate position of the weld 23, complete the preliminary adjustment;

[0040] S3, adjust the position of the spring 19 and the telescopic rod 20, ensure that the infrared probe 161 and the detection probe 171 are aligned with the weld 23, and the marking probe 181 is attached to the weld 23;

[0041] S4, start the infrared feedback device 16, stress detection device 17 and detection marking device 18 at the same time, the infrared feedback device 16 accurately positions the position of the weld 23, the feedback system 162 receives the feedback signal, the stress detection device 17 starts to move along the weld 23 path fed back by the infrared feedback device 16, and detects the stress of the weld 23, and the detection marking device 18 marks the position of the weld 23 which has been detected;

[0042] S5, after the detection is completed, the infrared feedback device 16, stress detection device 17 and detection marking device 18 are closed, the spring 19 and the telescopic rod 20 are adjusted, the infrared probe 161, the detection probe 171 and the marking probe 181 are separated from the weld 23, the fixed nut 5 and the screw 7 are adjusted, the steel material 22 is separated from the clamping unit, and finally the steel material 22 is removed.

[0043] Embodiment three

[0044] As Figs. 1 to 7As shown, a steel structure weld residual stress detection device, different from example one is that there is an irregular weld 23, in such a case, during the detection work, the motor 11 and the lead screw motor 15 are adjusted at the same time, and then the position of the working unit is changed, the infrared probe 161, the detection probe 171 and the marking probe 181 in the working unit are aligned in real time to the position of the weld 23 to be detected, so as to meet the stress detection requirements of the irregular weld 23; when detecting multiple welds 23, the lead screw motor 15 and the motor 11 are adjusted, so that the position of the working unit is adjusted without changing the position of the steel material 22, and other welds 23 are aligned and detected.

Claims

1. A steel structure weld residual stress detection device, characterized by: The utility model provides a kind of printing machine, including roller (8), mounting seat (10) and working unit, the roller (8) is arranged above mounting seat (10), the working unit includes infrared feedback device (16), stress detection device (17), detection mark device (18) and telescopic device, the telescopic device includes telescopic rod (20) and telescopic sleeve (21), the telescopic sleeve (21) bottom end is connected inside roller (8), the telescopic rod (20) is arranged inside telescopic sleeve (21), the telescopic rod (20) and telescopic sleeve (21) slidingly connect, the stress detection device (17) is arranged inside telescopic rod (20), the infrared feedback device (16) is fixedly arranged in one side of stress detection device (17), the detection mark device (18) is arranged in the other side of stress detection device; The roller (8) is provided with a chute (13) inside, the chute (13) is provided with a lead screw (14) inside, one end of the lead screw (14) is provided with a lead screw motor (15), and the rotating shaft of the lead screw (14) and the lead screw motor (15) is fixedly connected. The bottom end of the telescopic sleeve (21) is hinged to the lead screw (14), and the outer side of the roller (8) is provided with an annular rack (9). It also includes a mounting seat (10) and a helical gear (12), and the side of the mounting seat (10) is provided with a motor (11). The infrared feedback device (16) includes an infrared probe (161) and a feedback system (162); the stress detection device (17) includes a detection probe (171) and a protection plate (172); The detection mark device (18) includes a mark probe (181) and a pigment tank (182); it also includes a support unit, which includes a base (1) and a support block (2); It also includes a clamping unit, which includes a fixed block (3), a fixed screw (4), a fixed nut (5), a fixed piece (6) and a screw (7); It also includes a spring (19), and one end of the spring (19) is fixedly connected to the telescopic rod (20).

2. The apparatus for detecting residual stress of a weld of a steel structure according to claim 1, characterized in that: The mounting seat (10) has an arc bottom opening, the helical gear (12) is arranged on the end surface of the rotating shaft of the motor (11), and the annular rack (9) is engaged with the rotating shaft of the motor (11) through the helical gear (12).

3. The apparatus for detecting residual stress of a weld of a steel structure according to claim 1, characterized in that: The feedback system (162) is arranged above the infrared probe (161), and the feedback system (162) and the infrared probe (161) are fixedly connected.

4. The apparatus for detecting residual stress of a weld of a steel structure according to claim 1, characterized in that: The protection plate (172) is arranged below the detection probe (171), and the protection plate (172) and the detection probe (171) are fixedly connected.

5. The apparatus for detecting residual stress of a weld of a steel structure according to claim 1, characterized in that: The pigment tank (182) is arranged above the mark probe (181), and the pigment tank (182) and the mark probe (181) are fixedly connected, and the mark probe (181) protrudes from the infrared probe (161) and the detection probe (171).

6. The apparatus for detecting residual stress of a weld of a steel structure according to claim 1, characterized in that: The support block (2) is fixedly arranged above the base (1), the mounting seat (10) is arranged above the base (1), and the mounting seat (10) is arranged on the inner side of the support block (2).

7. The apparatus for detecting residual stress of a weld of a steel structure according to claim 1, characterized in that: The fixing piece (6) is L-shaped, one end of the fixing piece (6) extends into the interior of the fixed block (3), one end of the fixed screw rod (4) is fixedly connected with the side surface of the supporting block (2), the other end of the fixed screw rod (4) penetrates through the fixed block (3), the fixed nut (5) is arranged on the outer side of the fixed block (3), the fixed nut (5) is threadedly connected with the fixed screw rod (4), the screw rod (7) penetrates through the fixing piece (6), and one end of the screw rod (7) extends into the interior of the fixed block (3).

8. The apparatus for detecting residual stress of a weld of a steel structure according to claim 1, characterized in that: The other end of the spring (19) is fixedly connected with the bottom of the telescopic sleeve (21), the bottom of the telescopic sleeve (21) is provided with a hinge piece (211), and the side surface of the hinge piece (211) is provided with a deflection motor (212).

9. A method of using a device for detecting residual stresses in a weld of a steel structure according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: S1, the steel material (22) is placed above the supporting block (2), and is adjusted to a suitable position, the fixed nut (5) and the screw rod (7) are adjusted, and the steel material (22) is fixed; S2, the motor (11) and the lead screw motor (15) are adjusted, the infrared probe (161) is aligned with the starting position of the weld (23), and it is ensured that the feedback system (162) can capture the accurate position of the weld (23); S3, the positions of the spring (19) and the telescopic rod (20) are adjusted, so that the infrared probe (161) is aligned with the weld (23), and the marking probe (181) is attached to the weld; S4, the infrared feedback device (16), the stress detection device (17) and the detection marking device (18) are started at the same time, the infrared feedback device (16) accurately positions the position of the weld (23), the feedback system (162) receives the feedback signal, the stress detection device (17) starts to move along the weld (23) path fed back by the infrared feedback device (16), and the stress detection device (17) detects the stress of the weld (23), and the detection marking device (18) marks the position of the detected weld (23); S5, after detection is completed, the infrared feedback device (16), the stress detection device (17) and the detection marking device (18) are closed, the spring (19) and the telescopic rod (20) are adjusted, the infrared probe (161), the detection probe (171) and the marking probe (181) are separated from the weld (23), the fixed nut (5) and the screw rod (7) are adjusted, the steel material (22) is separated from the clamping unit, and finally the steel material (22) is removed.

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