CN112747922A

CN112747922A - Flaw detection mechanism and flaw detection scanning device

Info

Publication number: CN112747922A
Application number: CN202011534786.7A
Authority: CN
Inventors: 丁颖; 边志宏; 王蒙; 赵普民; 王洪昆; 王文刚; 王萌; 焦杨; 马瑞峰; 陈亮; 吕松
Original assignee: Shenhua Railway Equipment Co Ltd
Current assignee: Shenhua Railway Equipment Co Ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-05-04

Abstract

The invention relates to a flaw detection mechanism and a flaw detection scanning device. When the work piece has domatic or the arcwall face, start first driver, carry out the transmission to the probe through the swing subassembly for the swing takes place for the probe on first mount pad, changes probe installation angle, makes on probe one end can aim at the domatic or the normal direction of arcwall face of work piece, thereby makes the probe effectively detect a flaw to the work piece, effectively improves the application scope who detects, and then hoisting device's performance. Simultaneously, this mechanism of detecting a flaw's first driver and probe separate, and carry out the transmission by the swing subassembly between the two, consequently, effectively avoid first driver to get into aquatic and direct drive probe and lead to driven vibration or driven electric field to disturb the detection of detecting a flaw to avoid influencing the reliability of the testing result of detecting a flaw.

Description

Flaw detection mechanism and flaw detection scanning device

Technical Field

The invention relates to the technical field of nondestructive testing, in particular to a flaw detection mechanism and a flaw detection scanning device.

Background

The nondestructive testing is a method for inspecting and testing the structure, properties, state, type, properties, quantity, shape, position, size, distribution and changes of defects inside and on the surface of a test piece by taking a physical or chemical method as a means and by means of modern technology and equipment and by utilizing the changes of thermal, acoustic, optical, electrical, magnetic and other reactions caused by the abnormal structure or the existence of the defects in the material on the premise of not damaging or not influencing the service performance of the tested object and not damaging the internal structure of the tested object.

Nondestructive testing is particularly important for safe operation of mechanical parts, for example, a bearing used by a railway vehicle, the quality of the railway bearing is an important part for ensuring the safe operation of railway locomotives, vehicles and motor trains (collectively referred to as railway vehicles), and the inner ring and the outer ring of the bearing realize high-speed relative motion through rollers. The bearing is installed on the railway vehicle, and the axle rotates on the steel rail at a high speed through the bearing, so that the high-speed running of the train is realized. Due to the existence of the internal defects of the bearing, the bearing can generate fatigue defects with main characteristics of stripping and cracking in the using process, particularly under the conditions of high gravity and high speed, and even can generate faults such as fracture, strain and the like seriously, so that accidents such as train overturning, derailing and the like are caused.

In the flaw detection process, the conventional flaw detection device usually utilizes a driving structure to drive flaw detection equipment to detect workpieces in the vertical and horizontal directions. However, the method has no effect on the detection of the workpiece with the slope surface or the arc surface, and the flaw detection of the workpiece with the slope surface or the arc surface cannot be performed, so that the application range of the flaw detection device is narrow, and the use performance of the flaw detection device is reduced.

Disclosure of Invention

Therefore, a flaw detection mechanism and a flaw detection scanning device are needed to be provided, effective flaw detection can be performed on a workpiece with a slope surface or an arc surface, the application range of detection is improved, and therefore the use performance of the device is improved.

A flaw detection mechanism, comprising: the flaw detection structure comprises a first mounting seat, a first driver, a swinging assembly and a probe, wherein the first driver and the probe are arranged on the first mounting seat at intervals, the swinging assembly is connected between an output shaft of the first driver and the probe, and the first driver is used for driving the probe to swing on the first mounting seat through the swinging assembly; and the first moving structure is arranged on the first moving structure, the first moving structure is used for being arranged in the detection room, and the first moving structure is used for driving the probe to get close to or keep away from the workpiece.

Foretell mechanism of detecting a flaw through first mobile structure, orders about the structure of detecting a flaw and removes for the structure of detecting a flaw draws close to the work piece, so that the structure of detecting a flaw can detect a flaw to the work piece. When the work piece had domatic or the arcwall face, start first driver, carry out the transmission to the probe through the swing subassembly for the swing takes place for the probe on first mount pad, changes probe installation angle, makes on the domatic or the normal direction of arcwall face that the probe can aim at the work piece, thereby makes the probe effectively detect a flaw to the work piece, effectively improves the application scope who detects, and then hoisting device's performance. Simultaneously, this mechanism of detecting a flaw's first driver and probe separate, and carry out the transmission by the swing subassembly between the two, consequently, effectively avoid first driver to get into aquatic and direct drive probe and lead to driven vibration or driven electric field to disturb the detection of detecting a flaw to avoid influencing the reliability of the testing result of detecting a flaw. In addition, the first driver and the probe are indirectly driven, so that the structure of the flaw detection mechanism is distributed, and the influence of weight concentration on one detection end on the normal use of the flaw detection mechanism is avoided.

In one embodiment, the first driver is a motor, the swing assembly includes a first swing wheel, a second swing wheel and a transmission rod connected between the first swing wheel and the second swing wheel, the first swing wheel is mounted on an output shaft of the motor, and the second swing wheel is mounted on the probe.

In one embodiment, a first sensing portion is arranged on the first mounting seat, and a second sensing portion in sensing fit with the first sensing portion is arranged on an output shaft of the motor.

In one embodiment, the flaw detection mechanism further comprises a first connecting seat and a second connecting seat which are both installed on the first installation seat, the installation positions of the first connecting seat and the second connecting seat on the first installation seat are both adjustable, the first driver is installed on the first connecting seat, and the probe is installed on the second connecting seat.

In one embodiment, the first moving structure comprises a first moving assembly and a second moving assembly, the second moving assembly is mounted on the first moving assembly, the first mounting base is mounted on the second moving assembly, and the first moving assembly and the second moving assembly are matched to drive the probe to approach or leave the workpiece.

The utility model provides a scanning device detects a flaw, is including detecting room, positioning mechanism and above arbitrary one the mechanism of detecting a flaw, positioning mechanism with first removal structure is all installed detect the room in, positioning mechanism is used for the location work piece.

The flaw detection scanning device adopts the flaw detection mechanism, and firstly, the workpiece is positioned through the positioning mechanism; after the location, rethread first mobile structure orders about the structure of detecting a flaw and removes for the structure of detecting a flaw is drawn close to the work piece, so that the structure of detecting a flaw can detect a flaw to the work piece. When the work piece has domatic or the arcwall face, start first driver, carry out the transmission to the probe through the swing subassembly for the swing takes place for the probe on first mount pad, changes probe installation angle, makes on probe one end can aim at the domatic or the normal direction of arcwall face of work piece, thereby makes the probe effectively detect a flaw to the work piece, effectively improves the application scope who detects, and then hoisting device's performance. Simultaneously, this mechanism of detecting a flaw's first driver and probe separate, and carry out the transmission by the swing subassembly between the two, consequently, effectively avoid first driver to get into aquatic and direct drive probe and lead to driven vibration or driven electric field to disturb the detection of detecting a flaw to avoid influencing the reliability of the testing result of detecting a flaw. In addition, the first driver and the probe are indirectly driven, so that the structure of the flaw detection mechanism is distributed, and the influence of weight concentration on one detection end on the normal use of the flaw detection mechanism is avoided.

In one embodiment, the positioning mechanism comprises a first base, positioning components, a transmission structure and a second driver, the first base is arranged in the detection room, at least two positioning components are arranged on the first base, the positioning components comprise bases and positioning parts arranged on the bases in a sliding mode, the second driver is in driving fit with the positioning parts through the transmission structure, and the second driver is used for driving the positioning parts to move close to or away from each other.

In one embodiment, the positioning mechanism further comprises a third driver, an output shaft of the third driver is in driving fit with the first base, and the third driver is used for driving the first base to rotate.

In one embodiment, the flaw detection scanning device further comprises a grabbing mechanism, and the grabbing mechanism is used for grabbing the workpiece to or from the positioning mechanism.

In one embodiment, the grabbing mechanism includes a second moving structure, a third moving structure and a grabbing structure, the third moving structure is mounted on the second moving structure, the grabbing structure is mounted on the third moving structure, the second moving structure is configured to drive the third moving structure to move along a first direction, the third moving structure is configured to drive the grabbing structure to move along a second direction, the first direction and the second direction are perpendicular to each other, and the grabbing structure is configured to grab the workpiece.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a flaw detection mechanism according to one embodiment;

FIG. 2 is a schematic view of a flaw detection configuration described in one embodiment;

FIG. 3 is a schematic structural diagram of a flaw detection scanning apparatus according to an embodiment;

FIG. 4 is a schematic diagram showing an internal structure of the flaw detection scanning apparatus according to one embodiment;

FIG. 5 is a perspective view of the positioning mechanism in one embodiment;

FIG. 6 is another perspective view of the positioning mechanism configuration described in one embodiment;

FIG. 7 is a schematic view of an embodiment of a positioning mechanism with exposed drive and driven gears;

FIG. 8 is a schematic view of a positioning member according to an embodiment;

FIG. 9 is a schematic view of a grasping mechanism according to an embodiment;

FIG. 10 is a schematic view of a grasping configuration according to an embodiment;

fig. 11 is a schematic structural diagram of the first grasping element or the second grasping element according to an embodiment.

100. A flaw detection mechanism, 110, a first moving structure, 111, a first moving component, 112, a second moving component, 120, a flaw detection structure, 121, a first mounting seat, 1211, a first sensing part, 122, a first driver, 1221, a second sensing part, 123, a swinging component, 1231, a first swinging wheel, 1232, a second swinging wheel, 1233, a transmission rod, 124, a probe, 125, a first connection seat, 1251, a first kidney-shaped hole, 126, a second connection seat, 1261, a second kidney-shaped hole, 200, a positioning mechanism, 210, a first base, 211, a shaft hole, 220, a positioning component, 221, a base, 222, a positioning part, 2221, a first interference surface, 2222, a second interference surface, 223, a sliding part, 224, a support, 230, a transmission structure, 231, a first transmission part, 2311, a first bevel gear, 232, a second transmission part, 2321, a transmission gear, 240, a second driver, 241, a driven gear, 250. the third driver, 251, a driving gear, 300, a detection room, 310, an operation port, 400, a grabbing mechanism, 410, a second moving structure, 420, a third moving structure, 430, a grabbing structure, 431, a second mounting seat, 4311, a second guide part, 432, a first grabbing component, 4321, a second base, 4322, a fourth driver, 4323, a hand grip, 43231, a grabbing part, 43232, a groove, 4324, a guide piece, 4325, a guide groove, 4326, a first guide part, 4327, a connecting piece, 433, a second grabbing component, 440, an adjusting component, 441, an adjusting piece, 442, an adjusting wheel, 500, a controller, 600 and a display screen.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In one embodiment, referring to fig. 1, fig. 2 and fig. 3, a flaw detection mechanism 100 includes a flaw detection structure 120 and a first moving structure 110 of the flaw detection mechanism 100. The inspection structure 120 includes a first mount 121, a first driver 122, a swing assembly 123, and a probe 124. The first driver 122 and the probe 124 are mounted on the first mounting seat 121 at a distance. The wobble assembly 123 is connected between the output shaft of the first driver 122 and the probe 124. The first driver 122 is used to drive the probe 124 to swing on the first mounting seat 121 through the swing assembly 123. The first mounting seat 121 is mounted on the first moving structure 110, the first moving structure 110 is configured to be mounted in the inspection room 300, and the first moving structure 110 is configured to drive the probe 124 to move close to or away from the workpiece.

The flaw detection mechanism 100 drives the flaw detection structure 120 to move through the first moving structure 110, so that the flaw detection structure 120 is close to the workpiece, and the flaw detection structure 120 can perform flaw detection on the workpiece. When the work piece has a domatic or cambered surface, start first driver 122, carry out the transmission to probe 124 through swing subassembly 123 for probe 124 takes place the swing on first mount pad 121, changes probe 124 installation angle, makes on probe 124 one end can aim at the domatic or cambered surface's of work piece normal direction, thereby makes probe 124 can carry out effective flaw detection to the work piece, effectively improves the application scope who detects, and then the performance of hoisting device. Meanwhile, the first driver 122 and the probe 124 of the inspection mechanism 100 are separated from each other, and the first driver 122 and the probe 124 are driven by the swing assembly 123, so that the first driver 122 is effectively prevented from entering water and directly driving the probe 124 to cause driven vibration or a driven electric field to interfere with inspection, and the reliability of an inspection result is prevented from being influenced. In addition, the first driver 122 and the probe 124 are driven indirectly, so that the structure of the flaw detection mechanism 100 is distributed, and the weight is prevented from concentrating on one detection end to influence the normal use of the flaw detection mechanism 100.

The first actuator 122 may be a motor, and may also be a telescopic driving device such as an air cylinder, a hydraulic cylinder, or an electric cylinder. When the first driver 122 is a motor, the swing component 123 is a gear set, a belt, a transmission chain, or the like. When the first driver 122 is a telescopic driving device such as an air cylinder, a hydraulic cylinder, an electric cylinder, etc., the swing assembly 123 is a link structure, and the probe 124 is toggled through telescopic driving, so that the probe 124 swings on the first mounting seat 121.

It should be noted that the probe 124 is an electromagnetic flaw detector or an ultrasonic flaw detector, and since the internal structure of the probe 124 is not a modified object of the present embodiment, it is not described in detail herein, and reference may be made to the actual product structure.

Further, referring to fig. 2, the first driver 122 is a motor. The swing assembly 123 includes a first swing wheel 1231, a second swing wheel 1232, and a transmission rod 1233 connected between the first swing wheel 1231 and the second swing wheel 1232. The first swing wheel 1231 is mounted on the output shaft of the motor. A second swing wheel 1232 is mounted on the probe 124. Thus, the motor is started, so that the first swinging wheel 1231 is rotated; and then the transmission rod 1233 is linked with the second swinging wheel 1232 to rotate, so that the probe 124 swings on the first mounting seat 121, and the flaw detection of the probe 124 on the conical and curved bearings is realized.

It should be noted that the second swinging wheel 1232 installed on the probe 124 can be divided into: the second swing wheel 1232 may be mounted directly to the probe 124 or indirectly to the probe 124. When the second oscillating wheel 1232 is indirectly mounted on the probe 124, the probe 124 is mounted on the probe holder, and the second oscillating wheel 1232 is mounted on the probe holder, so as to realize indirect mounting.

Further, referring to fig. 2, the first mounting base 121 is provided with a first sensing portion 1211. The output shaft of the motor is provided with a second induction part 1221 in induction fit with the first induction part 1211, and therefore, when the swing angle of the probe 124 is adjusted, the first driver 122 is started, the second induction part 1221 rotates, when the first induction part 1211 is in induction fit with the second induction part 1221, the probe 124 swings to a preset angle, one end of the probe 124 is aligned to the normal direction of the slope surface or the arc surface of the workpiece, and thus, the swing angle of the probe 124 is effectively controlled through the cooperation of the first induction part 1211 and the second induction part 1221, and the flaw detection precision of the workpiece is higher.

Optionally, the first sensing portion 1211 is a sensing piece, and the second sensing portion 1221 is a sensor body, such as: a photoelectric sensing device; alternatively, the first sensing portion 1211 is a sensor body, and the second sensing portion 1221 is a sensing piece.

In one embodiment, referring to fig. 2, the inspection mechanism 100 further includes a first connecting seat 125 and a second connecting seat 126 both mounted on the first mounting seat 121. The mounting positions of the first connecting seat 125 and the second connecting seat 126 on the first mounting seat 121 are adjustable. The first driver 122 is mounted on the first connecting base 125. The probe 124 is mounted on the second connecting seat 126. When the detection distance between the probe 124 and the workpiece needs to be adjusted, the first connecting seat 125 and the second connecting seat 126 are moved in the same direction at the same time, so that the flaw detection mechanism 100 moves together in an integral manner, thereby adjusting the distance between the probe 124 and the workpiece.

Specifically, referring to fig. 2, a first kidney-shaped hole 1251 is disposed on the first connecting seat 125, and a second kidney-shaped hole 1261 is disposed on the second connecting seat 126, so that the positions of the first connecting seat 125 and the second connecting seat 126 on the first mounting seat 121 are adjustable. Meanwhile, there are two second connecting seats 126, two second connecting seats 126 are installed on the first installation seat 121, and the probe 124 is rotatably installed between the two second connecting seats 126. In addition, the first sensing portion 1211 is mounted on the first connector 125.

In one embodiment, referring to fig. 1, the first moving structure 110 includes a first moving component 111 and a second moving component 112, the second moving component 112 is mounted on the first moving component 111, the first mounting seat 121 is mounted on the second moving component 112, and the first moving component 111 and the second moving component 112 cooperate to drive the probe 124 to move close to or move away from the workpiece. So, through two not equidirectional mobile devices for structure 120 of detecting a flaw can more accurately remove to the assigned position, thereby makes structure 120 of detecting a flaw detect the work piece better.

In one embodiment, referring to fig. 3 and 4, a flaw detection scanning apparatus includes a detection room 300, a positioning mechanism 200, and the flaw detection mechanism 100 in any one of the above embodiments. The positioning mechanism 200 and the first moving structure 110 are installed in the detection room 300. The positioning mechanism 200 is used to position a workpiece.

The flaw detection scanning device adopts the flaw detection mechanism 100, and firstly positions a workpiece through the positioning mechanism 200; after the positioning, the first moving structure 110 drives the flaw detection structure 120 to move, so that the flaw detection structure 120 is close to the workpiece, and the flaw detection structure 120 can perform flaw detection on the workpiece. When the work piece has a domatic or cambered surface, start first driver 122, carry out the transmission to probe 124 through swing subassembly 123 for probe 124 takes place the swing on first mount pad 121, changes probe 124 installation angle, makes on probe 124 one end can aim at the domatic or cambered surface's of work piece normal direction, thereby makes probe 124 can carry out effective flaw detection to the work piece, effectively improves the application scope who detects, and then the performance of hoisting device. Meanwhile, the first driver 122 and the probe 124 of the inspection mechanism 100 are separated from each other, and the first driver 122 and the probe 124 are driven by the swing assembly 123, so that the first driver 122 is effectively prevented from entering water and directly driving the probe 124 to cause driven vibration or a driven electric field to interfere with inspection, and the reliability of an inspection result is prevented from being influenced. In addition, the first driver 122 and the probe 124 are driven indirectly, so that the structure of the flaw detection mechanism 100 is distributed, and the weight is prevented from concentrating on one detection end to influence the normal use of the flaw detection mechanism 100.

Further, referring to fig. 5, the positioning mechanism 200 includes a first base 210, a positioning assembly 220, a transmission structure 230, and a second driver 240. The first base 210 is installed in the inspection room 300. At least two positioning assemblies 220 are mounted on the first base 210. The positioning assembly 220 includes a base 221 and a positioning element 222 slidably mounted on the base 221, the second driver 240 is in driving fit with the positioning element 222 through the transmission structure 230, and the second driver 240 is used for driving at least two positioning elements 222 to move close to each other or move away from each other.

The positioning mechanism 200 is used for placing the workpiece on at least two positioning assemblies 220 in the process of fixing the workpiece; the second driver 240 is started to drive the transmission structure 230 to perform corresponding activities; the movable transmission structure 230 drives the at least two positioning members 222 to move closer to each other, so that each positioning member 222 abuts against the workpiece, and the workpiece is positioned on the positioning assembly 220. Because the positioning mechanism 200 utilizes the transmission structure 230 to transmit the positioning elements 222, so that at least two positioning elements 222 can slide on the corresponding bases 221 simultaneously, in the positioning process, the positioning of the workpiece can be completed only by starting the second driver 240 and driving the transmission structure 230 to move, so that the workpiece can be positioned quickly, and the nondestructive testing efficiency of the workpiece is effectively improved. And the sliding of all the positioning pieces 222 is controlled by the transmission structure 230, so that the stability of the transmission force on each positioning piece 222 is ensured, the stress of the workpiece is balanced in each positioning process, the workpiece is stabilized on the positioning component 220, the workpiece is prevented from moving in the detection process, and the nondestructive detection precision of the workpiece is improved. In addition, since at least two positioning elements 222 are connected with the transmission structure 230, when the transmission structure 230 moves, the positioning elements 222 slide on the corresponding bases 221 synchronously, that is, the moving amount of each positioning element 222 on the bases 221 is the same, so that the workpiece can be positioned at a specific position in each operation, which is beneficial to improving the reliability of the detection result; meanwhile, the center positioning of the workpiece is realized by the positioning mechanism 200 of the embodiment.

It should be noted that the transmission connection of the present embodiment is understood as: when the transmission structure 230 moves, for example, the transmission structure 230 rotates or moves back and forth, the positioning element 222 slides on the base 221 through the structure-to-structure conversion. There are various transmission connection manners of the positioning element 222 and the transmission structure 230, and it is only necessary that the positioning element 222 can move close to or away from each other after the transmission structure 230 moves.

Alternatively, the driving connection between the positioning member 222 and the driving structure 230 may be: when the transmission structure 230 is a screw rod structure, the transmission structure 230 is in threaded connection with the positioning member 222, the screw rod structure rotates, and the positioning member 222 moves back and forth on the base 221 under the action of the threads; or, when the transmission structure 230 is a rack structure, the transmission structure 230 is fixedly connected or hinged with the positioning element 222, that is, the rack structure is driven by the gear to move back and forth, so that the positioning element 222 moves back and forth on the base 221; alternatively, when the rack structure is a link structure, the link structure is rotationally connected to the positioning member 222, and the positioning member 222 is moved back and forth on the base 221 by using the principle of the link-slider mechanism.

Alternatively, the second driver 240 may be a telescopic driving device such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, etc.; or may be an electric motor. When the second actuator 240 is a telescopic driving device such as an air cylinder, a hydraulic cylinder, an electric cylinder, etc., the transmission structure 230 is driven by the second actuator 240 to move back and forth in a telescopic manner, so as to drive the positioning members 222 to move toward or away from each other; when the second driver 240 is a motor, the transmission structure 230 is driven by the second driver 240 to rotate, so as to drive the positioning members 222 to move toward or away from each other.

Further, referring to fig. 7, the positioning mechanism 200 further includes a third driver 250, an output shaft of the third driver 250 is in driving fit with the first base 210, and the third driver 250 is used for driving the first base 210 to rotate. Therefore, after the workpiece is positioned, the third driver 250 is started, the first base 210 is driven to rotate, the positioning component 220 on the first base 210 is driven to rotate together with the positioned workpiece, therefore, in the flaw detection process, the flaw detection mechanism 100 can be ensured to be stationary, the flaw detection of one circle of the workpiece can be realized, the requirement of rotating the large flaw detection mechanism 100 is avoided, and the workpiece is greatly convenient to detect.

It should be noted that a drive fit is understood as: when the third driver 250 is activated, it can drive the first base 210 to rotate. There are various driving matching manners, for example, the output shaft of the third driver 250 and the first base 210 are in meshing transmission through gears and gears; the transmission of the two can be realized by a belt or a chain, etc.

Specifically, referring to fig. 7, the third driver 250 is a motor, an output shaft of the motor is sleeved with a driving gear 251, and the first base 210 is sleeved with a driven gear 241 engaged with the driving gear 251.

It should be further noted that, referring to fig. 7, when the first transmission member 231 and the second transmission member 232 are transmitted by the bevel gear, the first base 210 drives the positioning assembly 220 to rotate, and the second transmission member 232 also drives the first transmission member 231 to rotate synchronously by the bevel gear, so as to ensure that the first transmission member 231 and the second transmission member 232 are relatively stationary, and prevent the first transmission member 231 and the second transmission member 232 from moving relatively due to the rotation of the first base 210, thereby preventing the positioning member 222 from moving and causing the positioning of the workpiece to become loose. Of course, the entire second driver 240 can be driven by the first base 210 to rotate.

In one embodiment, referring to fig. 5, the transmission structure 230 includes a first transmission member 231 and at least two second transmission members 232. The first transmission member 231 is connected to an output shaft of the second driver 240. The second transmission member 232 is in transmission connection with the positioning member 222. At least two second transmission members 232 are each geared or rotationally connected to the first transmission member 231. Thus, the first transmission member 231 is matched with the second transmission member 232, so that the second driver 240 can drive the positioning member 222 to stably move on the base 221, and the positioning members 222 are close to each other, thereby stably clamping the workpiece.

It should be noted that, referring to fig. 5, when the second transmission member 232 is in gear connection with the first transmission member 231, the first transmission member 231 is or is provided with a gear, the second transmission member 232 is a rack or a combination structure of a gear and a screw rod, and at this time, the second driver 240 is a motor device; when the second transmission member 232 is rotatably connected to the first transmission member 231, the first transmission member 231 and the second transmission member 232 are both of a link structure, and at this time, the second driver 240 is a telescopic driving device such as an air cylinder, a hydraulic cylinder, an electric cylinder, and the like.

Further, referring to fig. 5, the first transmission member 231 is provided with a first bevel gear 2311. The second transmission member 232 is a screw rod, and a second bevel gear 2321 meshed with the first bevel gear 2311 is arranged on the screw rod. Therefore, during the positioning process, the second driver 240 drives the first transmission member 231 to rotate; after the positioning member 222 and the first transmission member 231 move toward or away from each other, the first transmission member 231 is engaged with the second bevel gear 2321 via the first bevel gear 2311 to drive the screw rod to rotate, so that the positioning member 222 moves back and forth on the base 221. Since the first transmission member 231 and the second transmission member 232 are engaged and transmitted by the bevel gears in this embodiment, the rotation directions of the first transmission member 231 and the second transmission member 232 are not on the same plane, which is beneficial to changing the placement position between the first transmission member 231 and the second transmission member 232, so that the structural distribution among the second driver 240, the transmission structure 230 and the positioning assembly 220 becomes more compact. In addition, utilize the lead screw drive setting element 222 to remove, also can realize that setting element 222 locks on the lead screw, avoid the work piece to take place the drunkenness because of setting element 222 slides after the work piece location, promote the detection precision of work piece greatly.

Specifically, referring to fig. 5, the first transmission member 231 is a shaft structure, and the shaft structure is connected to the output shaft of the second driver 240 in a coupling manner or an interference fit manner. The first bevel gear 2311 is journaled on the shaft structure.

In one embodiment, referring to fig. 5, the positioning assembly 220 further comprises a sliding member 223. The slider 223 is slidably mounted on the base 221. The positioning member 222 is mounted on the slider 223. The screw rod penetrates through the sliding part 223 and is in threaded connection with the sliding part 223, so that after the screw rod rotates, the sliding part 223 is driven to move on the screw rod, and the positioning part 222 is driven to move on the base 221.

In one embodiment, referring to fig. 5, the positioning assembly 220 further comprises a support 224. The second transmission member 232 is rotatably mounted on the support 224, one end of the second transmission member 232 is in gear connection with the first transmission member 231, and the other end of the second transmission member 232 is in transmission connection with the positioning member 222, so that the second transmission member 232 can rotate stably through the support 224, and the workpiece is prevented from being positioned and deviated due to shaking when the second transmission member 232 rotates.

Further, referring to fig. 6, the first base 210 is provided with a shaft hole 211. At least two positioning assemblies 220 are spaced circumferentially about the shaft bore 211. The first transmission member 231 is installed in the shaft hole 211, one end of the first transmission member 231 is connected to the output shaft of the second driver 240, and the other end of the first transmission member 231 is gear-connected or rotatably connected to at least two second transmission members 232. Therefore, the first transmission member 231 of the present embodiment is surrounded by the positioning component 220, and when the first transmission member 231 moves, the second transmission member 232 is driven to correspondingly move, so that the peripheral positioning element 222 moves towards the first transmission member 231 at the same time, and the workpiece is stably clamped.

Specifically, referring to fig. 6, there are three positioning assemblies 220, the three positioning assemblies 220 are spaced around the shaft hole 211, and the positioning assemblies 220 are disposed along the radial direction of the shaft hole 211.

In one embodiment, the positioning element 222 has a first contact surface 2221 and a second contact surface 2222 disposed on opposite sides thereof. The first contact surface 2221 is adapted to contact an outer side surface of the workpiece. The second contact surface 2222 is used to contact the inner surface of the workpiece, so that the positioning element 222 can position the inner ring and the outer ring of the workpiece, respectively, and the inspection mechanism 100 can inspect the inner ring and the outer ring of the workpiece, respectively.

Specifically, referring to fig. 8, the first contact surface 2221 and the second contact surface 2222 are circular surfaces, respectively. It should be noted that the inner and outer side surfaces of the workpiece are understood as follows: the workpiece is provided with an inner cavity, taking a bearing sleeve as an example, the bearing sleeve is provided with an inner ring, one side of the bearing sleeve, which is back to the inner ring, is an outer side, and one side, which faces the inner ring, is an inner side.

In an embodiment, referring to fig. 3, a surrounding plate is disposed in the detection room 300, and the surrounding plate extends around the circumference of the positioning mechanism 200, that is, the surrounding plate surrounds the positioning mechanism 200, so that the workpiece on the positioning mechanism 200 is subjected to flaw detection in the surrounding plate, which is beneficial to improving the reliability of the detection result.

In one embodiment, referring to fig. 3, the detection room 300 is provided with an operation opening 310. The gripping mechanism 400 is used to grip the workpiece onto the positioning assembly 220 through the access port 310. Therefore, flaw detection is completed in the detection room 300, and the detection reliability is greatly improved.

Specifically, the two operation ports 310 are located on two opposite side surfaces of the detection room 300, so that the grabbing mechanism 400 can conveniently get in and out of the detection room 300, and the workpiece grabbing in and grabbing out of the detection room 300 can be operated more conveniently.

Further, referring to fig. 3, the flaw detection scanning apparatus further includes an input device (not shown) and an output device (not shown), which are respectively located at two sides of the detection room 300, so that the workpieces are stably supplied to the detection room 300 through the input device and the output device, and the workpieces in the detection room 300 are also stably output.

Alternatively, the input device and the output device are both belt conveyors, chain conveyors, roller wheel conveyors, etc.

In an embodiment, referring to fig. 3 and fig. 4, the flaw detection scanning apparatus further includes a display screen 600 and a controller 500, and the display screen 600, the positioning mechanism 200, and the flaw detection mechanism 100 are all electrically connected to the controller 500, so as to implement automatic control of the flaw detection scanning apparatus. Meanwhile, the parameter debugging and the automatic control of the operating personnel are facilitated through the display screen 600.

In one embodiment, referring to fig. 4, the inspection scanning apparatus further includes a gripping mechanism 400. The grabbing mechanism 400 is used for grabbing the workpiece to or from the positioning mechanism 200, so that stable feeding and stable material taking are realized.

Further, referring to fig. 9 and 10, the grabbing mechanism 400 includes a second moving structure 410, a third moving structure 420 and a grabbing structure 430, the third moving structure 420 is disposed on the second moving structure 410, the grabbing structure 430 is disposed on the third moving structure 420, the second moving structure 410 is configured to drive the third moving structure 420 to move along a first direction, the third moving structure 420 is configured to drive the grabbing structure 430 to move along a second direction, the first direction and the second direction are intersected, and the grabbing structure 430 is configured to grab a workpiece. Therefore, the second moving structure 410 drives the third moving structure 420 to move along the first direction, so that the grabbing structure 430 is located above the workpiece; driving the grabbing structure 430 to move along the second direction through the third moving structure 420, so that the grabbing structure 430 can contact the workpiece; then, the workpiece is grabbed by the grabbing structure 430; finally, the workpiece is placed on the positioning assembly 220 by the grabbing mechanism 430 again through the third moving mechanism 420 and the second moving mechanism 410, so that the workpiece is stably picked and placed.

Specifically, referring to fig. 9, the first direction and the second direction are perpendicular to each other. The second moving structure 410 and the third moving structure 420 are linear modules, and the grabbing structure 430 moves along the first direction and the second direction respectively by using a screw rod transmission principle. Of course, in other embodiments, the second moving structure 410 and the third moving structure 420 may be air cylinders or hydraulic cylinders.

Further, referring to fig. 9 and 10, the grabbing structure 430 includes a second mounting seat 431, a first grabbing component 432, a second grabbing component 433 and an adjusting component 440. The first grabbing component 432 and the second grabbing component 433 are arranged on the second mounting seat 431 at intervals, and at least one of the first grabbing component 432 and the second grabbing component 433 can slide relative to the second mounting seat 431. The first gripping assembly 432 and the second gripping assembly 433 each include a second base 4321, a fourth driver 4322, and a hand 4323 connected to an output shaft of the fourth driver 4322. The fourth driver 4322 is mounted on the second base 4321. An adjusting assembly 440 is mounted on the second mounting seat 431, and the adjusting assembly 440 is used for adjusting the distance between the first grabbing assembly 432 and the second grabbing assembly 433.

In the grabbing process, the fourth drivers 4322 of the first grabbing module 432 and the second grabbing module 433 are respectively activated by the grabbing structure 430, so as to drive the corresponding grippers 4323 to move and move together, thereby completing grabbing of the workpiece. When the driving stroke of the fourth driver 4322 is insufficient to make the two grippers 4323 act on the workpiece, the distance between the two

gripper assemblies

432 and 433 is changed by adjusting the assembly 440 such that at least one of the first gripper assembly 432 and the second gripper assembly 433 slides relative to the second mounting seat 431, and the first gripper assembly 432 and the second gripper assembly 433 are kept at a proper distance, so that the two grippers 4323 can stably act on the workpiece under the driving of the fourth driver 4322. Therefore, the grabbing structure 430 overcomes the driving stroke of the fourth driver 4322 by changing the distance between the first grabbing component 432 and the second grabbing component 433, and only needs to adjust the distance between the first grabbing component 432 and the second grabbing component when facing workpieces with different sizes, so that the application range of workpiece grabbing is widened, and the workpiece grabbing efficiency is improved. Meanwhile, the driving device does not need to be replaced in the detection process, so that the equipment cost in the detection process is effectively reduced.

It should be noted that, when the first gripping assembly 432 and the second gripping assembly 433 are disposed on the second mounting seat 431 at intervals, the two hand grips 4323 are disposed oppositely, that is, the two hand grips 4323 can move close to each other under the action of the respective fourth drivers 4322.

It should be further noted that the sliding of at least one of the first grabbing component 432 and the second grabbing component 433 relative to the second mounting seat 431 should be understood as: a first grasping element 432; or a second grasping assembly 433; alternatively, the first and second grasping

assemblies

432 and 433 may be slidable on the second mount 431. Meanwhile, the adjusting assembly 440 may adjust the distance between the first grabbing assembly 432 and the second grabbing assembly 433 in various ways, for example: the adjusting assembly 440 can move on the second mounting seat 431, and one of the first grabbing assembly 432 and the second grabbing assembly 433 is pushed by the movement; alternatively, the adjustment assembly 440 can be rotated on the second mount 431 to push one of the first and second grasping

assemblies

432, 433, etc. using a lead screw transmission principle.

Optionally, fourth drive 4322 is a pneumatic cylinder, hydraulic cylinder, electric cylinder, or the like.

Further, referring to fig. 10, the adjusting assembly 440 includes an adjusting wheel 442 and an adjusting member 441 connected to the adjusting wheel 442. The adjusting member 441 is mounted on the second mounting seat 431, and the adjusting member 441 is used for driving at least one of the first grabbing assembly 432 and the second grabbing assembly 433 to slide relative to the second mounting seat 431. It can be seen that, during the adjustment process, the adjustment wheel 442 is rotated or pushed to move the adjustment member 441 on the second mounting seat 431, for example, the adjustment member 441 is rotated or moved on the second mounting seat 431, so that one of the first grabbing assembly 432 and the second grabbing assembly 433 slides to change the distance therebetween.

Further, referring to fig. 10, the adjusting member 441 is an adjusting screw. The adjusting screw is rotatably mounted on the second mounting seat 431. The at least one second base 4321 is screwed on the adjusting screw and is in guiding fit with the second mounting seat 431, so that the adjusting wheel 442 is rotated to rotate the adjusting screw on the second mounting seat 431, and the at least one second base 4321 is driven to slide by using a screw transmission principle, thereby changing the distance between the first grabbing component 432 and the second grabbing component 433.

It should be noted that the guiding engagement between the second base 4321 and the second mounting seat 431 aims to: when the adjusting screw is prevented from being rotated, the second base 4321 also rotates along with the adjusting screw, so that the second base 4321 moves on the adjusting screw; secondly, the second base 4321 can move more stably.

Specifically, referring to fig. 10, the two second bases 4321 are screwed on the adjusting screw, so that when the adjusting screw rotates, the two second bases 4321 move synchronously, and the distance between the first grabbing component 432 and the second grabbing component 433 is adjustable. Of course, in order to move the two second bases 4321 close to each other, two threads with different turning directions need to be arranged on the adjusting screw rod.

In one embodiment, referring to fig. 10, the second base 4321 is provided with a first guiding portion 4326. The second guide portion 4311 is arranged on the second mounting seat 431 and is in guide fit with the first guide portion 4326, so that the first grabbing component 432 and the second grabbing component 433 are more stably adjusted in distance through the fit between the first guide portion 4326 and the second guide portion 4311.

Optionally, the first guide portion 4326 is a guide block structure, and the second guide portion 4311 is a guide groove structure; alternatively, the first guide portion 4326 has a guide groove structure, and the second guide portion 4311 has a guide block structure.

In one embodiment, referring to fig. 11, the second base 4321 is provided with a guide 4324. The hand grip 4323 is provided with a guide groove 4325 which is in guide engagement with the guide member 4324, so that the hand grip 4323 is smoothly extended by the fourth driver 4322 through the engagement of the guide member 4324 with the guide groove 4325, thereby enabling the gripping structure 430 to stably grip the workpiece.

Specifically, referring to fig. 11, two guide members 4324 and two guide slots 4325 are provided, and the two guide members 4324 are disposed on opposite sides of the fourth driver 4322.

In one embodiment, referring to fig. 11, the gripper 4323 is provided with a gripping portion 43231, and the gripping portion 43231 is provided with a groove 43232, so that the gripper 4323 can grip the workpiece more stably.

Further, referring to fig. 11, at least two grabbing portions 43231 are provided. At least two grabbing parts 43231 are arranged along the height direction of the grabbing parts 43231 at intervals, so that the grabbing strength is greatly improved.

In one embodiment, referring to fig. 11, the first base plate is provided with a connecting member 4327. The fourth driver 4322 is mounted on the connection member 4327, so that the fourth driver 4322 is stably mounted to ensure stable driving of the hand grip 4323.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A flaw detection mechanism, characterized in that the flaw detection mechanism comprises:

the flaw detection structure comprises a first mounting seat, a first driver, a swinging assembly and a probe, wherein the first driver and the probe are arranged on the first mounting seat at intervals, the swinging assembly is connected between an output shaft of the first driver and the probe, and the first driver is used for driving the probe to swing on the first mounting seat through the swinging assembly; and

the first moving structure is arranged on the first moving structure, the first moving structure is used for being arranged in the detection room, and the first moving structure is used for driving the probe to get close to or keep away from the workpiece.

2. The inspection mechanism of claim 1 wherein the first drive is a motor, the wobble assembly includes a first wobble wheel, a second wobble wheel, and a drive link connected between the first wobble wheel and the second wobble wheel, the first wobble wheel is mounted on an output shaft of the motor, and the second wobble wheel is mounted on the probe.

3. The inspection mechanism of claim 2, wherein the first mounting base is provided with a first sensing portion, and the output shaft of the motor is provided with a second sensing portion that is in sensing engagement with the first sensing portion.

4. The inspection mechanism of claim 1 further comprising a first connecting seat and a second connecting seat mounted on the first mounting seat, wherein the mounting positions of the first connecting seat and the second connecting seat on the first mounting seat are adjustable, the first driver is mounted on the first connecting seat, and the probe is mounted on the second connecting seat.

5. The inspection mechanism of any one of claims 1 to 4, wherein the first moving structure comprises a first moving assembly and a second moving assembly, the second moving assembly is mounted on the first moving assembly, the first mounting base is mounted on the second moving assembly, and the first moving assembly and the second moving assembly are matched to drive the probe to approach or leave the workpiece.

6. A flaw detection scanning device is characterized by comprising a detection room, a positioning mechanism and the flaw detection mechanism of any one of claims 1 to 5, wherein the positioning mechanism and the first moving structure are both arranged in the detection room, and the positioning mechanism is used for positioning a workpiece.

7. The flaw detection scanning device according to claim 6, wherein the positioning mechanism comprises a first base, positioning components, a transmission structure and a second driver, the first base is installed in the detection room, at least two positioning components are installed on the first base, the positioning components comprise a base and positioning pieces installed on the base in a sliding manner, the second driver is in driving fit with the positioning pieces through the transmission structure, and the second driver is used for driving the at least two positioning pieces to move close to each other or away from each other.

8. The flaw detection scanning apparatus of claim 7, wherein the positioning mechanism further comprises a third driver, an output shaft of the third driver is in driving engagement with the first base, and the third driver is configured to drive the first base to rotate.

9. The inspection scanning apparatus of any one of claims 6 to 8, further comprising a gripping mechanism for gripping the workpiece to or from the positioning mechanism.

10. The flaw detection scanning device according to claim 9, wherein the grasping mechanism comprises a second moving structure, a third moving structure and a grasping structure, the third moving structure is mounted on the second moving structure, the grasping structure is mounted on the third moving structure, the second moving structure is configured to drive the third moving structure to move along a first direction, the third moving structure is configured to drive the grasping structure to move along a second direction, the first direction and the second direction are perpendicularly intersected, and the grasping structure is configured to grasp the workpiece.