阅读说明：本技术 轮毂圆周焊缝立式旋转扫查系统 (Vertical rotary scanning system for circumferential weld of hub ) 是由 纪律源 崔金光 江李南 陈志佳 付汝龙 郑焕标 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种轮毂圆周焊缝立式旋转扫查系统,包括扫查系统主体、探头组件和上下料机构,上下料机构和探头组件均设置在扫查系统主体的一侧,其特征在于：所述扫查系统主体包括扫查支架、升降支撑组件和夹持旋转组件,升降支撑组件和夹持旋转组件分别安装在扫查支架上,并且夹持旋转组件处在升降支撑组件的下方；探头组件包括水软膜楔块探头和前后移动机构,水软膜楔块探头与前后移动机构的动力输出端传动连接,水软膜楔块探头与扫查系统主体的位置相对应。这种轮毂圆周焊缝立式旋转扫查系统方便能有效对轮毂圆周焊缝进行检测,扫查稳定性高,定位准确。(The invention discloses a vertical rotary scanning system for circumferential weld joints of hubs, which comprises a scanning system main body, a probe assembly and a feeding and discharging mechanism, wherein the feeding and discharging mechanism and the probe assembly are arranged on one side of the scanning system main body, and the vertical rotary scanning system is characterized in that: the scanning system main body comprises a scanning bracket, a lifting support assembly and a clamping rotating assembly, wherein the lifting support assembly and the clamping rotating assembly are respectively arranged on the scanning bracket, and the clamping rotating assembly is positioned below the lifting support assembly; the probe assembly comprises a water soft film wedge block probe and a forward-backward moving mechanism, the water soft film wedge block probe is in transmission connection with a power output end of the forward-backward moving mechanism, and the position of the water soft film wedge block probe corresponds to the position of the scanning system main body. The vertical rotary scanning system for the circumferential weld of the hub can conveniently and effectively detect the circumferential weld of the hub, and is high in scanning stability and accurate in positioning.)

1. The utility model provides a vertical rotatory system of looking into of wheel hub circumferential weld, looks into system's main part, probe subassembly and goes up unloading mechanism including sweeping, goes up unloading mechanism and probe subassembly and all sets up in one side of looking into system's main part, its characterized in that: the scanning system main body comprises a scanning bracket, a lifting support assembly and a clamping rotating assembly, wherein the lifting support assembly and the clamping rotating assembly are respectively arranged on the scanning bracket, and the clamping rotating assembly is positioned below the lifting support assembly; the probe assembly comprises a water soft film wedge block probe and a forward-backward moving mechanism, the water soft film wedge block probe is in transmission connection with a power output end of the forward-backward moving mechanism, and the position of the water soft film wedge block probe corresponds to the position of the scanning system main body.

2. The vertical rotary scanning system for circumferential welds on hubs of claim 1, wherein: the water soft film wedge block probe comprises an ultrasonic probe, a wedge block, a soft film, an annular cover plate and two one-way valves, and the ultrasonic probe is arranged on the back surface of the wedge block; the wedge block is provided with a couplant inner cavity, a couplant filling port, a bubble discharge port, a first port and a second port, the couplant filling port, the first port and the second port are communicated with the couplant inner cavity, the first port is arranged on the back surface of the wedge block, and the second port is arranged on the binding surface of the wedge block; the scanning surface of the ultrasonic probe is positioned in the range of the first port; the soft film is tightly pressed on the binding surface of the wedge block through the annular cover plate and seals the second port, and the soft film is protruded out of the binding surface of the wedge block and the outer surface of the annular cover plate; the couplant filling port and the air bubble discharge port are respectively connected with the two one-way valves.

3. The vertical rotary scanning system for circumferential welds on hubs of claim 1, wherein: the probe assembly further comprises a probe support, a left-right moving mechanism, a vertical moving mechanism and a front-back compensation moving mechanism, the left-right moving mechanism is installed on the probe support, the vertical moving mechanism is installed on the power output end of the left-right moving mechanism, the front-back moving mechanism is installed on the power output end of the vertical moving mechanism, the front-back compensation moving mechanism is installed on the power output end of the front-back moving mechanism, and the water film wedge block probe is installed on the power output end of the front-back compensation moving mechanism.

4. The vertical rotary scanning system for circumferential welds on hubs of claim 3, wherein: the left and right moving mechanism comprises a first probe support, a left screw seat, a right screw and a right screw seat, the left screw seat and the right screw are respectively and fixedly mounted at the left end and the right end of the probe support, the left screw is rotatably mounted on the left screw seat, the left end of the first probe support is provided with a left screw meshed with the left screw, the right screw is rotatably mounted on the right screw seat, the right end of the first probe support is provided with a right screw meshed with the right screw, the probe support is provided with a plurality of positioning pins, the first probe support is provided with a plurality of first guide holes extending along the left direction and the right direction, each first guide hole is in one-to-one correspondence with each positioning pin and in sliding fit, and the vertical moving mechanism is mounted on the first probe support.

5. The vertical rotary scanning system for circumferential welds on hubs of claim 4, wherein: the front-back movement mechanism comprises a second probe support, a third probe support and an electric push rod, the second probe support is installed on the power output end of the vertical movement mechanism, the electric push rod is installed on the second probe support, a sliding rail extending in the front-back direction is arranged at the upper end of the second probe support, the third probe support is arranged on the second probe support, a sliding block matched with the sliding rail is arranged at the lower end of the third probe support, a piston rod of the electric push rod is connected with the front end of the third probe support, and the front-back compensation movement mechanism is installed on the third probe support.

6. The vertical rotary scanning system for circumferential welds on hubs of claim 5, wherein: the front and back compensation moving mechanism comprises a fixed seat, a fourth probe support, two guide rods and two springs, the fixed seat is fixedly installed on the third probe support, the rear end of the fourth probe support is provided with two second guide holes, the two guide rods respectively penetrate through the two second guide holes, the rear ends of the two guide rods are respectively connected with the fixed seat, and the two springs are respectively sleeved on the two guide rods and are both positioned between the fixed seat and the fourth probe support; guide wheel arms extending from back to front are respectively arranged on the left side and the right side of the fourth probe support, guide wheels are respectively arranged at the front ends of the two guide wheel arms, the water-film wedge block probe is installed at the front end of the fourth probe support, and the water-film wedge block probe is located between the two guide wheel arms.

7. The vertical rotary scanning system for circumferential welds on hubs of claim 1, wherein: the lifting support assembly comprises an annular support plate, at least one lifting driving mechanism and at least three upper and lower guide mechanisms, the lifting driving mechanism is installed on the scanning support, the power output end of the lifting driving mechanism is in transmission connection with the annular support plate, the annular support plate is installed on the scanning support through each upper and lower guide mechanism, and at least two positioning blocks are arranged on the upper surface of the annular support plate.

8. The vertical rotary scanning system for circumferential welds on hubs of claim 7, wherein: the number of the upper and lower guide mechanisms is four, and each upper and lower guide mechanism is arranged along the circumferential direction of the annular supporting plate; each upper and lower guide mechanism comprises a second guide rail which is arranged on the scanning bracket and extends along the vertical direction, and a connecting block which can move up and down along the second guide rail, and each connecting block is respectively connected with an annular supporting plate; the number of the lifting driving mechanisms is two.

9. The vertical rotary scanning system for the circumferential weld of the hub as claimed in any one of claims 7 or 8, wherein: the clamping rotating assembly comprises a chuck and a rotation driving mechanism, the rotation driving mechanism is installed on the scanning support, the chuck is in transmission connection with a power output end of the rotation driving mechanism, and the chuck is located below an opening of the annular supporting plate.

10. The vertical rotary scanning system for circumferential welds on hubs of claim 1, wherein: the feeding and discharging mechanism comprises a feeding raceway and a discharging raceway, the feeding raceway is arranged in front of the scanning system main body along the conveying direction of the hub, and the discharging raceway is arranged behind the scanning system main body along the conveying direction of the hub; the feeding roller path and the discharging roller path respectively comprise conveying supports and a plurality of conveying rollers, each conveying roller is respectively arranged on the corresponding conveying support, each conveying roller is parallel to each other, and the lower end of each conveying support is provided with a foot cup.

Technical Field

The invention relates to a detection device, in particular to a vertical rotary scanning system for a circumferential weld of a hub.

Background

The steel rim is also called a hub, is a metal part for supporting the tire by the inner outline of the automobile tire, is an important part for bearing the vehicle, and the quality of the steel rim is directly related to the life safety of people. The existing welding of steel hubs adopts a laser welding machine, pulse laser generated by a laser irradiates the surface of a machined part after beam expansion, reflection and focusing, surface heat is diffused inwards through heat conduction, and the workpiece is melted to form a specific molten pool through digitally and accurately controlling parameters such as the width, energy, peak power, repetition frequency and the like of laser pulse, so that the laser precision welding of the machined part is realized. In the laser welding of the automobile hub, the detection of the weld penetration is an important quality index of laser penetration welding, so that the detection of the weld penetration of the hub by providing an effective detection means has important significance. At present, for the scanning of the hub parts, most of the hub parts are scanned by adopting a water immersion horizontal rolling mode, although the coupling problem in the scanning process can be solved, the mode needs a complex mechanical structure and a water circulation system, and meanwhile, the mode is not convenient for butt joint with other equipment of a production line.

Disclosure of Invention

The invention aims to solve the technical problem of providing a vertical rotary scanning system for circumferential welds of hubs, which can conveniently and effectively detect the circumferential welds of the hubs and has high scanning stability and accurate positioning.

In order to solve the technical problems, the technical scheme is as follows:

the utility model provides a vertical rotatory system of looking into of wheel hub circumferential weld, looks into system's main part, probe subassembly and goes up unloading mechanism including sweeping, goes up unloading mechanism and probe subassembly and all sets up in one side of looking into system's main part, its characterized in that: the scanning system main body comprises a scanning bracket, a lifting support assembly and a clamping rotating assembly, wherein the lifting support assembly and the clamping rotating assembly are respectively arranged on the scanning bracket, and the clamping rotating assembly is positioned below the lifting support assembly; the probe assembly comprises a water soft film wedge block probe and a forward-backward moving mechanism, the water soft film wedge block probe is in transmission connection with a power output end of the forward-backward moving mechanism, and the position of the water soft film wedge block probe corresponds to the position of the scanning system main body.

In the vertical rotary scanning system for the circumferential weld of the wheel hub, the wheel hub to be detected is conveyed to a main body of the scanning system by the feeding and discharging mechanism, after the wheel hub moves onto the lifting support assembly, the lifting support assembly drives the wheel hub to descend, then the wheel hub is positioned and fixed by the clamping rotary assembly, the front-back moving mechanism drives the water-soft-film wedge block probe to move forwards, the water-soft-film wedge block probe is in contact with the wheel hub, the flexible characteristic of the water-soft-film wedge block probe ensures that the water-soft-film wedge block probe is in close contact fit with the circumferential uneven surface of the wheel hub, meanwhile, the clamping rotary assembly drives the wheel hub to rotate, the water-soft-film wedge block probe performs circumferential detection on the circumferential weld of the wheel hub, after detection is completed, the clamping rotary assembly loosens the wheel hub, the wheel hub is lifted by the lifting support assembly.

In a preferred scheme, the water soft film wedge block probe comprises an ultrasonic probe, a wedge block, a soft film, an annular cover plate and two one-way valves, wherein the ultrasonic probe is arranged on the back surface of the wedge block; the wedge block is provided with a couplant inner cavity, a couplant filling port, a bubble discharge port, a first port and a second port, the couplant filling port, the first port and the second port are communicated with the couplant inner cavity, the first port is arranged on the back surface of the wedge block, and the second port is arranged on the binding surface of the wedge block; the scanning surface of the ultrasonic probe is positioned in the range of the first port; the soft film is tightly pressed on the binding surface of the wedge block through the annular cover plate and seals the second port, and the soft film is protruded out of the binding surface of the wedge block and the outer surface of the annular cover plate; the couplant filling port and the air bubble discharge port are respectively connected with the two one-way valves. Through this kind of setting, can pour into the couplant inner chamber through the couplant mouth of pouring into, and discharge the bubble of couplant inner chamber through the bubble discharge port, be full of liquid in the couplant inner chamber after, the mantle can bulge in the binding face of voussoir and the outside of annular apron, consequently when using water mantle voussoir probe to detect the wheel hub surface, even wheel hub surface deformation is great, can both make the mantle hug closely on the wheel hub surface, thereby fill the space that exists between voussoir and the wheel hub surface, satisfy the scanning demand. The coupling agent can be water or other liquid.

In a preferable scheme, the probe assembly further comprises a probe support, a left-right moving mechanism, a vertical moving mechanism and a front-back compensation moving mechanism, the left-right moving mechanism is installed on the probe support, the vertical moving mechanism is installed on the power output end of the left-right moving mechanism, the front-back moving mechanism is installed on the power output end of the vertical moving mechanism, the front-back compensation moving mechanism is installed on the power output end of the front-back moving mechanism, and the water-soft-membrane wedge probe is installed on the power output end of the front-back compensation moving mechanism. According to the difference of the models of the hubs or the difference of detection positions, the position of the water film wedge block probe can be adjusted by adjusting the left-right moving mechanism, the vertical moving mechanism and the front-back moving mechanism, and the water film wedge block probe can be always tightly attached to the surface of the hub in the rotating process of the hub by arranging the front-back compensation moving mechanism because the surface of the hub has partial deformation.

In a further preferred scheme, the left and right moving mechanism comprises a first probe support, a left screw seat, a right screw and a right screw seat, the left screw seat and the right screw seat are fixedly installed at the left end and the right end of the probe support respectively, the left screw is rotatably installed on the left screw seat, the left end of the first probe support is provided with a left screw meshed with the left screw, the right screw is rotatably installed on the right screw seat, the right end of the first probe support is provided with a right screw meshed with the right screw, the probe support is provided with a plurality of positioning pins, the first probe support is provided with a plurality of first guide holes extending along the left and right directions, each first guide hole corresponds to each positioning pin one by one and is in sliding fit, and the vertical moving mechanism is installed on the first probe support. Above-mentioned vertical moving mechanism can adopt the crane, lift platform, first guide rail, the gear, the rack, pivot and hand wheel matched with mode, the roof of crane is equipped with the through-hole that link up from top to bottom, what first guide rail can reciprocate installs in the through-hole, the rack is installed on the crane and parallels with first guide rail, the gear passes through the pivot and installs in the crane, and mesh with the rack, the hand wheel is connected with the outer end of pivot, lift platform is connected with the crane through first guide rail and rack, back-and-forth movement mechanism installs on lift platform, or adopt elevator motor. Through the arrangement, a worker can simultaneously adjust the left screw and the right screw to enable the first probe support to move in the left-right direction, so that the water-soft-film wedge block probe is driven to move left and right.

In a further preferable scheme, the forward and backward movement mechanism comprises a second probe support, a third probe support and an electric push rod, the second probe support is mounted on the power output end of the vertical movement mechanism, the electric push rod is mounted on the second probe support, a slide rail extending in the forward and backward direction is arranged at the upper end of the second probe support, the third probe support is arranged on the second probe support, a slide block matched with the slide rail is arranged at the lower end of the third probe support, a piston rod of the electric push rod is connected with the front end of the third probe support, and the forward and backward compensation movement mechanism is mounted on the third probe support.

In a further preferred scheme, the front and back compensation moving mechanism comprises a fixed seat, a fourth probe support, two guide rods and two springs, the fixed seat is fixedly mounted on the third probe support, two second guide holes are formed in the rear end of the fourth probe support, the two guide rods respectively penetrate through the two second guide holes, the rear ends of the two guide rods are respectively connected with the fixed seat, and the two springs are respectively sleeved on the two guide rods and are both positioned between the fixed seat and the fourth probe support; guide wheel arms extending from back to front are respectively arranged on the left side and the right side of the fourth probe support, guide wheels are respectively arranged at the front ends of the two guide wheel arms, the water-film wedge block probe is installed at the front end of the fourth probe support, and the water-film wedge block probe is located between the two guide wheel arms. Through the arrangement, when the wheel hub rotates in detection, the guide wheels at the front ends of the two guide wheel arms firstly contact with the surface of the wheel hub, and when part of the surface of the wheel hub deforms, the guide wheels move along with the deformation part when contacting with the wheel hub to drive the fourth probe support to move, so that the water film wedge probe moves along with the water film wedge probe, and the water film wedge probe is ensured to be always attached to the surface of the wheel hub. Generally, linear bearings can be arranged in the two second guide holes respectively, so that the guide rod can move more smoothly, and the service life of the guide rod is prolonged.

In a preferred scheme, the lifting support assembly comprises an annular support plate, at least one lifting driving mechanism and at least three upper and lower guide mechanisms, the lifting driving mechanism is installed on the scanning support, the power output end of the lifting driving mechanism is in transmission connection with the annular support plate, the annular support plate is installed on the scanning support through the upper and lower guide mechanisms, and at least two positioning blocks are arranged on the upper surface of the annular support plate. The open-ended area of annular support plate is less than the area of wheel hub outer lane cross section, waits to detect wheel hub and carries to annular support plate by the material loading raceway, carries out coarse positioning with wheel hub position through the locating piece, makes wheel hub and centre gripping rotating assembly aim at, and annular support plate drives through lift actuating mechanism, and upper and lower guiding mechanism leads annular support plate and avoids annular support plate to incline at the lift in-process.

In a further preferred scheme, each upper and lower guide mechanism comprises a second guide rail which is arranged on the scanning support and extends along the vertical direction, and a connecting block which can move up and down along the second guide rail, and each connecting block is respectively connected with the annular supporting plate.

In a further preferred embodiment, the number of the upper and lower guide mechanisms is four, and each upper and lower guide mechanism is arranged along the circumferential direction of the annular support plate.

In a further preferred embodiment, the number of the lifting driving mechanisms is two. The lifting driving mechanism can adopt an air cylinder, a lifting motor and the like.

In a further preferred scheme, the clamping and rotating assembly comprises a chuck and a rotation driving mechanism, the rotation driving mechanism is installed on the scanning bracket, the chuck is in transmission connection with a power output end of the rotation driving mechanism, and the chuck is located below the opening of the annular supporting plate. The chuck adopts the pneumatic three-jaw chuck of forward type, and rotation driving mechanism can adopt motor, shaft coupling, main shaft and bearing frame matched with mode, and the pivot of motor is connected with the main shaft through the shaft coupling, and the main shaft passes the bearing frame and is connected with the chuck. Generally, the clamping surface of the chuck and the cross section of the inner ring of the hub are located in the opening range of the annular supporting plate, after the hub to be detected descends along with the annular supporting plate, the chuck clamps the hub to fix the position of the hub, and the rotation driving mechanism drives the chuck to rotate so that the hub rotates along with the rotation driving mechanism.

In a preferred scheme, the feeding and discharging mechanism comprises a feeding raceway and a discharging raceway, the feeding raceway is arranged in front of the scanning system main body along the conveying direction of the hub, and the discharging raceway is arranged behind the scanning system main body along the conveying direction of the hub; the feeding roller path and the discharging roller path respectively comprise conveying supports and a plurality of conveying rollers, each conveying roller is respectively arranged on the corresponding conveying support, each conveying roller is parallel to each other, and the lower end of each conveying support is provided with a foot cup. The wheel hub is placed on the feeding roller path, the wheel roller can be easily conveyed to the position of the scanning system main body only by being pushed by hands, the height of the feeding roller path and the height of the discharging roller path can be adjusted through the foot cup, generally, the height of the feeding roller path is higher than that of the scanning system main body, the height of the scanning system main body is higher than that of the discharging roller path, and workers can conveniently pull the wheel hub to move step by step.

The invention has the beneficial effects that: the vertical rotary scanning system for the circumferential weld of the hub can conveniently and effectively detect the circumferential weld of the hub, has high scanning stability, is convenient to carry and accurate in positioning, does not need a complex mechanical structure and a water circulation system, and is convenient to butt with other equipment of a production line.

Drawings

FIG. 1 is a schematic structural diagram of a vertical rotary scanning system for circumferential weld joints of a hub in the embodiment of the invention;

FIG. 2 is a schematic structural diagram of a main body of a scanning system according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a main body of a scanning system during hub detection in the embodiment of the invention;

FIG. 4 is a schematic structural diagram of a probe assembly in an embodiment of the invention;

FIG. 5 is a schematic view of FIG. 4 taken along direction A;

FIG. 6 is a schematic structural diagram of a water-soft-membrane wedge probe installed on a front and rear compensation moving mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a water-soft-membrane wedge probe according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a water-soft membrane wedge probe in an embodiment of the present invention;

FIG. 9 is a cross-sectional view of the water-soft-membrane wedge probe detecting the hub according to the embodiment of the invention.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments:

as shown in fig. 1, the vertical rotary scanning system for circumferential weld of a hub comprises a scanning system main body 1, a probe assembly 2 and a loading and unloading mechanism, wherein the loading and unloading mechanism and the probe assembly 2 are both arranged on one side of the scanning system main body 1, the scanning system main body 1 comprises a scanning support 101, a lifting support assembly 102 and a clamping rotary assembly 103, the lifting support assembly 102 and the clamping rotary assembly 103 are respectively arranged on the scanning support 101, and the clamping rotary assembly 103 is arranged below the lifting support assembly 102; the probe assembly 2 comprises a water film wedge block probe 201, a probe support 202, a left-right moving mechanism 203, a vertical moving mechanism 204, a front-back moving mechanism 205 and a front-back compensation moving mechanism 206, wherein the left-right moving mechanism 203 is installed on the probe support 202, the vertical moving mechanism 204 is installed on the power output end of the left-right moving mechanism 203, the front-back moving mechanism 205 is installed on the power output end of the vertical moving mechanism 204, the front-back compensation moving mechanism 206 is installed on the power output end of the front-back moving mechanism 205, the water film wedge block probe 201 is installed on the power output end of the front-back compensation moving mechanism 206, and the position of the water film wedge block probe 201 corresponds to the position of.

In the vertical rotary scanning system for the circumferential weld of the hub, a hub 5 to be detected is conveyed to a scanning system main body 1 by a feeding and discharging mechanism, after the hub 5 moves onto a lifting support assembly 102, the lifting support assembly 102 drives the hub 5 to descend, then the hub 5 is positioned and fixed by a clamping and rotating assembly 103, the position of a soft membrane wedge probe 201 can be adjusted by adjusting a left-right moving mechanism 203, a vertical moving mechanism 204 and a front-back moving mechanism 205 according to the type of the hub 5 or the difference of detection parts, so that the soft membrane wedge probe 201 is contacted with the hub 5, the deformable characteristic of the soft membrane wedge probe 201 ensures that the soft membrane wedge probe is tightly contacted and matched with the circumferential concave-convex surface of the hub 5, meanwhile, the clamping and rotating assembly 103 drives the hub 5 to rotate, the soft membrane wedge probe 201 performs circumferential detection on the circumferential weld of the hub 5, and as part of the surface of the hub 5 is, through setting up compensation moving mechanism 206 around can guaranteeing to rotate the in-process at wheel hub 5, water mantle wedge block probe 201 hugs closely all the time on wheel hub 5 surface, and after accomplishing the detection, centre gripping rotating assembly 103 loosens wheel hub 5, and wheel hub 5 is taken away after being driven to rise by lift supporting component 102, and unloading mechanism sends into new wheel hub 5 that awaits measuring afterwards to this circulation.

The water-soft-film wedge probe 201 comprises an ultrasonic probe 2011, a wedge 2012, a soft film 2013, an annular cover plate 2014 and two one-way valves 2015, wherein the ultrasonic probe 2011 is installed on the back surface of the wedge 2012; the wedge 2012 is provided with a couplant inner cavity 20121, a couplant filling port 20122, a bubble discharge port 20123, a first port 20124 and a second port 20125, the couplant filling port 20122, the first port 20124 and the second port 20125 are all communicated with the couplant inner cavity 20121, the first port 20124 is positioned on the back surface of the wedge 2012, and the second port 20125 is positioned on the binding surface of the wedge 2012; the scan plane of the ultrasound probe 2011 is within the range of the first port 20124; the soft film 2013 is tightly pressed on the abutting surface of the wedge 2012 through the annular cover plate 2014 and seals the second port 20125, and the soft film 2013 protrudes out of the abutting surface of the wedge 2012 and the annular cover plate 2014; the couplant pouring opening 20122 and the air bubble discharge opening 20123 are connected to two check valves 2015, respectively. By the arrangement, the couplant can be injected into the couplant inner cavity 20121 through the couplant filling port 20122, air bubbles in the couplant inner cavity 20121 are discharged through the air bubble discharge port 20123, and after the couplant inner cavity 20121 is filled with liquid, the soft film 2013 can protrude out of the adhering surface of the wedge 2012 and the annular cover plate 2014, so that when the surface of the hub 5 is detected by using the water soft film wedge probe 201, the soft film 2013 can cling to the surface of the hub 5 even if the surface of the hub 5 deforms greatly, a gap between the wedge 2012 and the surface of the hub 5 is filled, and the scanning requirement is met. The coupling agent is water.

The left-right moving mechanism 203 includes a first probe support 2031, a left screw 2032, a left screw seat 2033, a right screw 2034 and a right screw seat 2035, the left screw seat 2033 and the right screw seat 2035 are respectively and fixedly installed at the left end and the right end of the probe support 202, the left screw 2032 is rotatably installed on the left screw seat 2033, the left end of the first probe support 2031 is provided with a left screw meshed with the left screw 2032, the right screw 2034 is rotatably installed on the right screw seat 2035, the right end of the first probe support 2031 is provided with a right screw meshed with the right screw 2034, the probe support 202 is provided with a plurality of positioning pins 2021, the first probe support 2031 is provided with a plurality of first guide holes 20311 extending along the left-right direction, each first guide hole 20311 is respectively in one-to-one correspondence and sliding fit with each positioning pin 2021, and the vertical moving mechanism 204 is installed on the first probe support 2031. The vertical moving mechanism 204 is a lifting frame 2041, a lifting platform 2042, a first guide rail 2043, a gear (not visible in the drawing), a rack (not visible in the drawing), a rotating shaft (not visible in the drawing) and a hand wheel 2044 are matched, a through hole which is through up and down is formed in the top wall of the lifting frame 2041, the first guide rail 2043 can be installed in the through hole in a vertically moving mode, the rack is installed on the lifting frame 2041 and is parallel to the first guide rail 2043, the gear is installed in the lifting frame 2041 through the rotating shaft and is meshed with the rack, the hand wheel 2044 is connected with the outer end of the rotating shaft, the lifting platform 2042 is connected with the lifting frame 2041 through the first guide rail 2043 and the rack, and the forward and backward moving mechanism 205 is. Through the arrangement, the worker can simultaneously adjust the left screw 2032 and the right screw 2034 to move the first probe support 2031 in the left-right direction, so that the water-soft-membrane wedge block probe 201 is driven to move left and right.

The front-back moving mechanism 205 comprises a second probe support 2051, a third probe support 2052 and an electric push rod 2053, the second probe support 2051 is mounted on the power output end of the vertical moving mechanism 204, the electric push rod 2053 is mounted on the second probe support 2051, a slide rail 20511 extending in the front-back direction is arranged at the upper end of the second probe support 2051, the third probe support 2052 is arranged on the second probe support 2051, a slide block 20521 matched with the slide rail 20511 is arranged at the lower end of the third probe support 2052, and a piston rod of the electric push rod 2053 is connected with the front end of the third probe support 2052;

the front and rear compensation moving mechanism 206 comprises a fixed seat 2061, a fourth probe support 2062, two guide rods 2063 and two springs 2064, the fixed seat 2061 is fixedly mounted on the third probe support 2052, the rear end of the fourth probe support 2062 is provided with two second guide holes 20621, the two guide rods 2063 respectively penetrate through the two second guide holes 20621, the rear ends of the two guide rods 2063 are respectively connected with the fixed seat 2061, and the two springs 2064 are respectively sleeved on the two guide rods 2063 and are both positioned between the fixed seat 2061 and the fourth probe support 2062; guide wheel arms 20622 extending from back to front are respectively arranged at the left side and the right side of the fourth probe support 2062, guide wheels 20623 are respectively arranged at the front ends of the two guide wheel arms 20622, the water soft membrane wedge block probe 201 is arranged at the front end of the fourth probe support 2062, and the water soft membrane wedge block probe 201 is positioned between the two guide wheel arms 20622. Through the arrangement, in the detection process, when the wheel hub 5 rotates, the guide wheels 20623 at the front ends of the two guide wheel arms 20622 firstly contact with the surface of the wheel hub 5, and when the surface of the wheel hub 5 is partially deformed, the guide wheels 20623 move along with the deformed part when contacting with the wheel hub 5, so that the fourth probe support 2062 is driven to move, the water film wedge block probe 201 moves along with the water film wedge block probe, and the water film wedge block probe 201 can be ensured to be always attached to the surface of the wheel hub 5.

The lifting support assembly 102 comprises an annular support plate 1021, two lifting drive mechanisms 1022 and four upper and lower guide mechanisms 1023, each lifting drive mechanism 1022 is respectively installed on the scanning support 101, the power output end of each lifting drive mechanism 1022 is in transmission connection with the annular support plate 1021, the four top corners of the annular support plate 1021 are circumferentially arranged on each upper and lower guide mechanism 1023 along the annular support plate 1021, each upper and lower guide mechanism 1023 comprises a second guide rail 10231 which is arranged on the scanning support 101 and extends along the upper and lower directions and a connecting block 10232 which can move up and down along the second guide rail 10231, each connecting block 10232 is respectively connected with the annular support plate 1021, and the upper surface of the annular support plate 1021 is provided with two positioning blocks 10211. The open-ended area of annular support plate 1021 is less than the area of wheel hub 5 outer ring cross section, waits to detect wheel hub 5 and carries to annular support plate 1021 by material loading raceway 3, carries out thick location with wheel hub 5 position through locating piece 10211, makes wheel hub 5 and centre gripping rotating component 103 aim at, and annular support plate 1021 drives through lift actuating mechanism 1022, and upper and lower guiding mechanism 1023 leads annular support plate 1021 and avoids annular support plate 1021 to incline at the lift in-process. Each of the lift driving mechanisms 1022 employs an air cylinder.

The clamping and rotating assembly 103 comprises a chuck 1031 and a rotation driving mechanism 1032, the rotation driving mechanism 1032 is installed on the scanning bracket 101, the chuck 1031 is in transmission connection with a power output end of the rotation driving mechanism 1032, and the chuck 1031 is positioned below an opening of the annular supporting plate 1021. The chuck 1031 is a front-mounted pneumatic three-jaw chuck, the rotation driving mechanism 1032 adopts a mode that a motor 10321, a coupler 10322, a main shaft 10323 and a bearing seat 10324 are matched, the rotating shaft of the motor 10321 is connected with the main shaft 10323 through the coupler 10322, and the main shaft 10323 penetrates through the bearing seat 10324 to be connected with the chuck 1031. Generally, the engaging surface of the chuck 1031 and the cross section of the inner ring of the hub 5 are both located in the opening range of the annular support plate 1021, after the hub 5 to be detected descends along with the annular support plate 1021, the chuck 1031 engages the hub 5 to fix the position of the hub 5, and the rotation driving mechanism 1032 drives the chuck 1031 to rotate so as to rotate the hub 5.

The feeding and discharging mechanism comprises a feeding raceway 3 and a discharging raceway 4, the feeding raceway 3 is arranged in front of the scanning system main body 1 along the conveying direction of the hub 5, and the discharging raceway 4 is arranged behind the scanning system main body 1 along the conveying direction of the hub 5; the feeding roller path 3 and the discharging roller path 4 both comprise a conveying support 341 and a plurality of conveying rollers 342, each conveying roller 342 is respectively arranged on the corresponding conveying support 341, each conveying roller 342 is parallel to each other, and the lower end of each conveying support 341 is provided with a foot cup 343. The wheel hub 5 is placed on the feeding roller path 3, the wheel can be easily conveyed to the scanning system main body 1 by being pushed by a hand, the height of the feeding roller path 3 and the height of the discharging roller path 4 can be adjusted through the foot cup 343, the height of the feeding roller path 3 is higher than that of the scanning system main body 1, the height of the scanning system main body 1 is higher than that of the discharging roller path 4, and a worker can conveniently pull the wheel hub 5 to move step by step.