A device for ultrasonic nondestructive crack detection of motor spindle

Abstract

The present invention belongs to the field related to workpiece detection equipment, and provides an ultrasonic non-destructive crack detection device for a motor spindle, comprising a detection component, an axial motion ring, and a radial motion ring; through the cooperation of the axial rotating ring and the radial rotating ring, automatic variable shaft surface area adjustment and axial motion control are realized, thereby automatically performing cylindrical coverage detection on the shaft body. Compared with the existing technology, automatic positioning and detection of special-shaped shafts such as crankshafts can be achieved without manual control, and the use is more convenient.

Description

Technical Field

[0001] The present invention belongs to the field related to workpiece detection equipment, and in particular relates to an ultrasonic non-destructive crack detection device for a motor spindle. Background Art

[0002] In metal crack detection, especially for crack detection of important high-load structures such as shafts, reliable and effective detection is very important for risk investigation in later use. Even if the appearance of the shaft is intact, the cracks hidden inside it may cause damage during subsequent high-load use. Once damaged, such core components will cause a series of chain safety problems, resulting in large economic losses and threats to personnel safety.

[0003] Therefore, it is very necessary to detect cracks in the shaft. The crack detection in the existing technology includes manual detection and mechanical detection of corresponding special shafts. Manual detection consumes manpower and is prone to certain non-standard detection operations due to supervision issues. Special mechanical detection lacks the versatility for different spindles, and production costs are difficult to effectively share. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a device for ultrasonic non-destructive crack detection of a motor spindle, aiming to solve the problems raised in the background technology.

[0005] The embodiment of the present invention is implemented as follows, comprising a detection assembly for generating and receiving feedback and an axial motion ring and a radial motion ring for spatially positioning the detection assembly;

[0006] The plane where the axial motion ring is located is perpendicular to the axis direction of the main shaft and is slidably matched with the detection track along the axis direction. The radial motion ring is coplanar with the inner ring of the axial motion ring.

[0007] The inner wall of the axial motion ring is evenly provided with a plurality of radial control bases in the circumferential direction. The radial control base is provided with a telescopic hinge member hingedly connected to the radial motion ring. The telescopic hinge member is provided with a telescopic slider at the end close to the radial control base. A hinge plate is provided between the telescopic slider and the radial motion ring with both ends hingedly connected. The hinge plate is provided in the plane where the radial motion ring is located. When the plurality of telescopic hinge members are adjusted individually, the axis of the radial motion ring is offset in the plane.

[0008] The detection component is slidably arranged along the circumferential direction of the radial motion ring.

[0009] As a further embodiment of the present invention, the detection assembly includes a pair of detection motion bases equidistantly arranged on the circumference and connected to each other, wherein the detection motion bases and the ultrasonic probe are collinearly arranged on the radius of the radial motion ring;

[0010] A telescopic connection piece is provided between the ultrasonic probe and the detection motion base. When the telescopic connection piece is folded and extended, the distance between the ultrasonic probes corresponding to a pair of the detection motion bases changes.

[0011] As a further solution of the present invention: a hinge seat is provided between the telescopic connecting piece and the ultrasonic probe, and the ultrasonic probe is hingedly arranged to the hinge seat. When there is an angle between the main shaft curved surface and the corresponding part of the circumference of the radial motion ring, the ultrasonic probe rotates relative to the hinge seat.

[0012] As a further solution of the present invention: a magnetic track is provided on the surface of the radial motion ring, and the magnetic track cooperates with the detection motion base to drive the detection motion base to move in the circumferential direction through the action of magnetic force.

[0013] As a further solution of the present invention: further comprising a drive assembly;

[0014] The drive assembly includes a pair of drive shafts arranged along the detection track. Driven fittings are fixed on both sides of the axial motion ring. The drive shafts cooperate with the screw rods of the driven fittings. When the drive shafts rotate, the fittings slide along the detection track.

[0015] The drive assembly further includes a synchronous linkage member for linking a pair of drive shafts, and the synchronous linkage member synchronizes the rotation speed of the pair of drive shafts.

[0016] As a further solution of the present invention: further comprising a clamping assembly provided at the bottom of the detection track;

[0017] The clamping assembly comprises a plurality of clamping claws evenly distributed on the circumference. The clamping claws are arranged to slide radially, and the plurality of clamping claws are controlled in linkage by a clamping control disk.

[0018] As a further solution of the present invention: further comprising a locking auxiliary component provided on the top of the detection track;

[0019] The locking auxiliary assembly includes a support member arranged along the axis of the main shaft, and the support member is also provided with an adjusting member with threaded engagement. When the adjusting member is rotated, the distance between the end of the support member and the clamping assembly changes;

[0020] An auxiliary locking piece is provided at the end of the support piece, and the auxiliary locking piece is abutted against the end of the main shaft.

[0021] An embodiment of the present invention provides an ultrasonic non-destructive crack detection device for a motor spindle. Through the cooperation of an axial rotating ring and a radial rotating ring, automatic variable shaft surface area adjustment and axial motion control are realized, thereby automatically performing cylindrical coverage detection on the shaft body. Compared with the existing technology, automatic positioning and detection of special-shaped shafts such as crankshafts can be achieved without manual control, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional structural diagram of an ultrasonic non-destructive crack detection device for a motor spindle provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the coordination of an axial motion ring and a radial motion ring in an ultrasonic nondestructive crack detection device for a motor spindle provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the offset variation of a radial motion ring in an ultrasonic nondestructive crack detection device for a motor spindle provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of an axial motion ring in a device for ultrasonic nondestructive crack detection of a motor spindle provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a radial motion ring in a device for ultrasonic nondestructive crack detection of a motor spindle provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of a detection component in a device for ultrasonic nondestructive crack detection of a motor spindle provided by an embodiment of the present invention;

[0028] Figure 7 A partial schematic diagram of a detection component in a device for ultrasonic nondestructive crack detection of a motor spindle provided by an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the coordination of a drive assembly in a device for ultrasonic nondestructive crack detection of a motor spindle provided by an embodiment of the present invention;

[0030] Figure 9 A schematic diagram of a locking auxiliary component in a device for ultrasonic nondestructive crack detection of a motor spindle provided by an embodiment of the present invention.

[0031] In the accompanying drawings: 1-detection track, 2-clamping assembly, 210-clamping claw, 220-clamping control disk, 3-locking auxiliary assembly, 310-support member, 320-adjusting member, 330-auxiliary locking member, 4-drive assembly, 410-synchronous linkage member, 420-drive shaft, 5-axial motion ring, 510-radial control base, 520-driven matching member, 530-telescopic hinge, 6-radial motion ring, 610-magnetic track, 7-detection assembly, 710-detection motion base, 720-articulated seat, 730-telescopic connecting member, 740-ultrasonic probe. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0034] like Figures 1 to 4 The above is a structural diagram of a motor spindle ultrasonic non-destructive crack detection device provided by one embodiment of the present invention, which includes a detection component 7 for generating and receiving feedback, and an axial motion ring 5 and a radial motion ring 6 for spatially positioning the detection component 7;

[0035] The plane where the axial motion ring 5 is located is perpendicular to the axis direction of the main shaft and is slidably matched with the detection track 1 along the axis direction. The radial motion ring 6 is coplanar with the inner ring of the axial motion ring 5.

[0036] The inner wall of the axial movement ring 5 is evenly provided with a plurality of radial control bases 510 in the circumferential direction. The radial control bases 510 are provided with telescopic hinges 530 hingedly connected to the radial movement ring 6. The telescopic hinge 530 is provided with a telescopic slider at the end close to the radial control base 510. A hinge plate is hingedly connected at both ends between the telescopic slider and the radial movement ring 6. The hinge plate is provided in the plane where the radial movement ring 6 is located. When the plurality of telescopic hinges 530 are adjusted individually, the axis of the radial movement ring 6 is offset in the plane.

[0037] The detection assembly 7 is slidably arranged along the circumferential direction of the radial motion ring 6 .

[0038] In an embodiment of the present invention, a device for ultrasonic non-destructive crack detection of a click spindle is provided. Through the cooperation of the axial rotating ring 5 and the radial rotating ring 6, automatic variable shaft surface area adjustment and axial motion control are realized, thereby automatically performing cylindrical coverage detection on the shaft body. Compared with the existing technology, automatic positioning and detection of special-shaped shafts such as crankshafts can be achieved without manual control, which is more convenient to use.

[0039] In one embodiment of the present invention, the specific implementation is as follows: the detection component 7 is installed on the radial motion ring 6, and the radial motion ring 6 provides it with a circular motion track, so that during the ultrasonic detection process, circular surrounding motion can be achieved to perform surrounding detection on the main shaft body; on this basis, the radial motion ring 6 is arranged at a position within the coplanar ring of the axial motion ring 5, and the telescopic hinge 530 is divided into a telescopic part and a hinged part, which can achieve a certain angle of rotation while telescoping, so that under the joint action of multiple telescopic hinges 530, the radial motion ring 6 is controlled to deflect by a certain angle, that is, the center axis of the radial motion ring 6 and the center axis of the axial motion ring 5 are no longer in a coincident state. The effect of this arrangement is that when the main shaft is a special shaft such as a crankshaft, the position of the radial motion ring 6 can be adjusted accordingly with the change of the shaft body, so that the center line of the radial motion ring 6 is always collinear with the center line of the main shaft body of the part that needs to be detected.

[0040] like Figure 1 、 Figures 5 to 7 As a preferred embodiment of the present invention, the detection assembly 7 includes a pair of detection motion bases 710 equidistantly arranged on the circumference and connected to each other, and the detection motion bases 710 and the ultrasonic probe 740 are collinearly arranged on the radius of the radial motion ring 6;

[0041] A telescopic connection member 730 is provided between the ultrasonic probe 740 and the detection motion base 710 . When the telescopic connection member 730 is folded and extended, the distance between the ultrasonic probes 740 corresponding to the pair of detection motion bases 710 changes.

[0042] Furthermore, a hinge seat 720 is provided between the telescopic connecting member 730 and the ultrasonic probe 740, and the ultrasonic probe 740 is hinged to the hinge seat 720. When there is an angle between the main shaft curved surface and the corresponding part of the circumference of the radial motion ring 6, the ultrasonic probe 740 rotates relative to the hinge seat 720.

[0043] In one embodiment of the present invention, the structure of the detection component 7 is supplemented, mainly including the arrangement of a telescopic connection member 730 and an articulated seat 720, wherein the telescopic connection member 730 can be realized by a plurality of folding structures cooperating with a telescopic shaft connected together (as shown in the structure in the attached drawing), with the purpose of achieving adaptation to the diameter of the main shaft and being adaptable to the detection of main shafts of more specifications; the arrangement of the articulated seat 720 enables the ultrasonic probe 740 to have a certain adaptability, and when the surface of the main shaft is an irregular circular surface (such as a camshaft) or there is a small deviation in the positioning of the radial motion ring 6, the rotation correction can be achieved through the articulated arrangement of the ultrasonic probe 740, so that the ultrasonic probe 740 is perpendicular to the axial plane.

[0044] like Figure 1 、 Figure 5 and Figure 6 As another preferred embodiment of the present invention, a magnetic track 610 is provided on the surface of the radial motion ring 6, and the magnetic track 610 cooperates with the detection motion base 710 to drive the detection motion base 710 to move circumferentially through magnetic force.

[0045] In one embodiment of the present invention, a specific motion coordination method between the detection component 7 and the radial motion ring 6 is supplemented. A magnetic coordination method is adopted here, wherein a magnetic track 610 is provided on the surface of the radial motion ring 6. The magnetic coordination between the magnetic track 610 and the detection component 7d detection motion base 710 is magnetically coordinated, thereby realizing motion control of the detection component 7.

[0046] like Figure 1 and Figure 8 As a preferred embodiment of the present invention, it further includes a driving component 4;

[0047] The drive assembly 4 includes a pair of drive shafts 420 arranged along the detection track 1. Driven fittings 520 are fixed on both sides of the axial motion ring 5. The drive shafts 420 cooperate with the screw rods of the driven fittings 520. When the drive shafts 420 rotate, the fittings 520 slide along the detection track 1.

[0048] The driving assembly 4 further includes a synchronous linkage member 410 for linking a pair of driving shafts 420 , and the synchronous linkage member 410 synchronizes the rotation speed of the pair of driving shafts 420 .

[0049] In one embodiment of the present invention, a driving component 4 is added, the purpose of which is to realize drive control for the movement of the detection component 7 along the axial direction of the main shaft. The main thing that needs to be controlled here is that the driving speed on both sides of the axial motion ring 5 is consistent. Therefore, a synchronous linkage 410 is provided to connect the driving shafts 420 on both sides. The synchronous linkage 410 here is engaged in a toothed manner and cannot be a belt-type linkage structure to avoid asynchrony caused by factors such as slippage.

[0050] like Figure 1 and Figure 9 As another preferred embodiment of the present invention, it further includes a clamping assembly 2 provided at the bottom of the detection track 1;

[0051] The clamping assembly 2 includes a plurality of clamping claws 210 evenly distributed on the circumference. The clamping claws 210 are arranged to slide radially. The plurality of clamping claws 210 are controlled in linkage by a clamping control disk 220 .

[0052] Furthermore, it also includes a locking auxiliary component 3 provided on the top of the detection track 1;

[0053] The locking auxiliary assembly 3 includes a support member 310 arranged along the main shaft axis, and a threaded adjustment member 320 is also provided on the support member 310. When the adjustment member 320 rotates, the distance between the end of the support member 310 and the clamping assembly 2 changes;

[0054] An auxiliary locking piece 330 is provided at the end of the support piece 310 , and the auxiliary locking piece 330 is abutted against the end of the main shaft.

[0055] In one embodiment of the present invention, a clamping assembly 2 and a locking auxiliary assembly 3 are added, wherein the clamping assembly 2 is used to support and fix the main shaft. The structure here is similar to the claw plate, and multiple clamping claws 210 can be locked by rotating the clamping control disk 220; the function of the locking auxiliary assembly 3 is to control the extension length of the support member 310 by rotating the threaded adjustment member 320, thereby assisting in fixing the top end of the main shaft of different lengths to ensure stability during the detection process.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultrasonic nondestructive crack detection device for a motor spindle, characterized in that: It comprises a detection component (7) for generating and receiving feedback, and an axial motion ring (5) and a radial motion ring (6) for spatially positioning the detection component (7); The plane where the axial motion ring (5) is located is arranged perpendicular to the axial direction of the motor main shaft and is slidably matched with the detection track (1) along the axial direction. The radial motion ring (6) is arranged coplanar with the inner ring of the axial motion ring (5); The inner wall of the axial motion ring (5) is evenly provided with a plurality of radial control bases (510) in the circumferential direction, and a telescopic hinge (530) hingedly arranged with the radial motion ring (6) is provided in the radial control base (510), and the telescopic hinge (530) is provided with a telescopic slider at the end close to the radial control base (510), and a hinge plate with both ends hingedly connected is provided between the telescopic slider and the radial motion ring (6), and the hinge plate is provided in the plane where the radial motion ring (6) is located. When the plurality of telescopic hinges (530) are adjusted individually, the axis of the radial motion ring (6) deviates in the plane; The detection component (7) is arranged to slide along the circumferential direction of the radial motion ring (6); The detection assembly (7) comprises a pair of detection motion bases (710) equidistantly arranged on the circumference and connected to each other, wherein the detection motion bases (710) and the ultrasonic probe (740) are collinearly arranged on the radius of the radial motion ring (6); A telescopic connection member (730) is provided between the ultrasonic probe (740) and the detection motion base (710); when the telescopic connection member (730) is folded and extended, the distance between the ultrasonic probes (740) corresponding to the pair of detection motion bases (710) changes; An articulated seat (720) is provided between the telescopic connecting member (730) and the ultrasonic probe (740), and the ultrasonic probe (740) and the articulated seat (720) are articulated. When an angle exists between the motor spindle curved surface and a corresponding portion of the circumference of the radial motion ring (6), the ultrasonic probe (740) rotates relative to the articulated seat (720); A magnetic track (610) is provided on the surface of the radial motion ring (6), and the magnetic track (610) cooperates with the detection motion base (710) to drive the detection motion base (710) to move in a circumferential direction through the action of magnetic force.

2. The ultrasonic nondestructive crack detection device for a motor spindle according to claim 1, characterized in that: Also included is a drive assembly (4); The driving assembly (4) includes a pair of driving shafts (420) arranged along the detection track (1), and driven fittings (520) are fixed on both sides of the axial motion ring (5). The driving shafts (420) cooperate with the screw rods of the driven fittings (520). When the driving shafts (420) rotate, the driven fittings (520) slide along the detection track (1); The drive assembly (4) further comprises a synchronous linkage member (410) for linking a pair of drive shafts (420), wherein the synchronous linkage member (410) synchronizes the rotational speed of the pair of drive shafts (420).

3. The ultrasonic nondestructive crack detection device for a motor spindle according to claim 1, characterized in that: It also includes a clamping assembly (2) arranged at the bottom of the detection track (1); The clamping assembly (2) comprises a plurality of clamping claws (210) evenly distributed on a circumference, the clamping claws (210) being arranged to slide radially, and the plurality of clamping claws (210) being controlled in linkage via a clamping control disk (220).

4. The ultrasonic nondestructive crack detection device for a motor spindle according to claim 3, characterized in that: Also included is a locking auxiliary component (3) provided on the top of the detection track (1); The locking auxiliary component (3) comprises a support member (310) arranged along the axis of the motor main shaft, and the support member (310) is further provided with an adjusting member (320) with threaded engagement, and when the adjusting member (320) rotates, the distance between the end of the support member (310) and the clamping component (2) changes; An auxiliary locking piece (330) is provided at the end of the support piece (310), and the auxiliary locking piece (330) is abutted against the end of the motor main shaft.

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