Non-contact magnetization mechanism

Abstract

The utility model relates to the technical field of flaw detection of wheels by an electric or magnetic method, in particular to a non-contact magnetization mechanism. The non-contact magnetization mechanism comprises a long end and a short end, the long end and the short end are oppositely arranged, each of the long end and the short end comprises a mounting plate, a moving coil and a magnet yoke, a through hole is formed in the center of each mounting plate, the moving coils are arranged on the sides, close to each other, of the mounting plates, each moving coil comprises a radial part and an axial part, and the radial parts are arranged in the through holes. The radial parts abut against the surfaces of the mounting plates, the radial parts extend from the edges of the through holes to the edges of the mounting plates, the axial parts extend from the two ends of the radial parts in the direction perpendicular to the opposite mounting plates, and the axial parts on the long-end mounting plates can abut against the axial parts on the short-end mounting plates. The open-close type through coil full closed loop is adopted, a transition movable contact is not arranged, a non-contact magnetization mode is adopted for a workpiece, the sparking risk is avoided, and the surface of the workpiece is not damaged.

Description

Technical Field

[0001] The present application relates to the technical field of wheel flaw detection using electrical or magnetic methods, and in particular to a non-contact magnetization mechanism. Background Art

[0002] The wheel flaw detector utilizes the fact that after the ferromagnetic material is magnetized, due to the existence of discontinuities, the magnetic lines of force on the surface and near the surface of the workpiece are locally distorted, generating a leakage magnetic field (i.e. the magnetic field formed when the magnetic induction lines leave and enter the surface) to adsorb the magnetic powder applied to the surface of the workpiece, forming magnetic marks that are visually visible under appropriate lighting, thereby showing the position, shape and size of the discontinuity.

[0003] For the circumferential magnetization of the annular wheel workpiece, the rod-through method is usually used. The rod-through method is a method of passing a current-carrying conductor into the annular workpiece to detect longitudinal defects along the axial direction of the workpiece. Since the magnetic field strength of the rod-through method is inversely proportional to the diameter of the workpiece, the magnetic field near the center hole surface is stronger than the magnetic field on the outer surface. For workpieces with larger outer diameters, a sufficient magnetic field must be achieved on the outside of the workpiece, and the rod-through current must be large, which consumes a lot of energy. There are also circumferential magnetization methods that directly energize the workpiece to establish a closed magnetic field surrounding the workpiece and perpendicular to the workpiece axis. However, there is a risk of sparking when the workpiece is directly energized, which can damage the workpiece surface. Summary of the invention

[0004] In order to reduce the risk of sparking, avoid damaging the workpiece surface, and detect large outer diameter workpieces as comprehensively as possible while reducing current and energy consumption, the present application provides a non-contact magnetization mechanism, which adopts the following technical solution.

[0005] A non-contact magnetization mechanism includes a long end and a short end, the long end and the short end are arranged opposite to each other, the long end and the short end each include a mounting plate, a moving coil and a yoke, a through hole is provided in the center of the mounting plate, the moving coil is arranged on the side of the mounting plate close to each other, the moving coil includes a radial portion and an axial portion, the radial portion abuts against the surface of the mounting plate, the radial portion extends from the edge of the through hole to the edge of the mounting plate, and the axial portion extends from both ends of the radial portion in a direction perpendicular to the opposite mounting plate. The axial portion on the long-end mounting plate can abut against the axial portion on the short-end mounting plate.

[0006] Optionally, a locking assembly is provided on the short end mounting plate, and the locking assembly tightens the long end axial portion and the short end axial portion.

[0007] Optionally, the locking assembly is arranged at the end of the radial portion, and the locking assembly includes a box body fixed to the side of the short end mounting plate close to the long end mounting plate and a clamping cylinder fixed on the box body, the piston end of the clamping cylinder is inserted into the box body, the side of the box body away from the short end mounting plate is open, the axial portion on the short end mounting plate is fixed to the bottom of the box body, and the axial portion on the long end mounting plate can be inserted into the box body.

[0008] Optionally, an end of the axial portion away from the radial portion is provided with a chamfer.

[0009] Optionally, the yoke is fixed on the mounting plate, the yoke is U-shaped, the U-shaped opening faces another mounting plate, one protruding end of the U-shape is inserted into the through hole of the mounting plate, and the other protruding end of the U-shape extends from the edge of the mounting plate.

[0010] Optionally, it further includes a longitudinal coil, which is in a ring shape and is coaxially arranged with the through hole. The yoke is inserted in the longitudinal coil, and the longitudinal coil is arranged on a side of the mounting plate away from the other mounting plate.

[0011] Optionally, a notch is provided on an edge of the mounting plate, and the other U-shaped extending end of the yoke extends out from the notch.

[0012] Optionally, a spray pipe is fixedly provided on one side of the mounting plates close to each other, and the spray pipe is connected to a magnetic suspension tank.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] 1. Among the three workstations, the magnetization part can work all the time, and the two observation parts work alternately. The mobile trolley transports the wheels and sends the wheels to the two observation parts for inspection respectively, which improves work efficiency.

[0015] 2. The lifting device controls the receiving device to receive or deliver the wheel on the wheel running line of the wheel-out robot. The mobile trolley can transport the wheel laterally. During the working process, the magnetization device can maintain a continuous working state, which can reduce waiting time and thus improve work efficiency.

[0016] 3. The combination of the lead screw nut and the lifting lead screw can make the lifting device more stable during the lifting process and reduce the risk of the wheel falling.

[0017] 4. The cooperation of the fixed plate and the guide wheel can limit the screw nut longitudinally and transversely, so that the screw nut can only move up and down. The screw nut will not exert shear force on the lifting screw, thereby increasing the service life of the screw nut.

[0018] 5. The rolling wheels can roll in the track, which is convenient for the movement of the mobile car. The reducer facilitates the installation of the motor, improves space utilization, and can also reduce speed and reverse. The mobile car can move back and forth in different directions without the need for the motor to rotate in the opposite direction. The two rollers can rotate relative to each other, thereby driving the wheels to rotate, allowing the wheels to be better magnetized and not causing the wheels to roll off due to rotation.

[0019] 6. The circumferential coil can form radial magnetic marks on the wheel web, the longitudinal coil can form circumferential magnetic marks on the wheel tread, and the yoke forms circumferential magnetic marks on the wheel web. The longitudinal coil carries current when it is energized, and the yoke can carry circumferential current on the workpiece. After the yoke is closed to form a loop, the copper bar wrapped around the yoke is energized, which will cause the wheel workpiece to carry circumferential current, and finally form circumferential magnetic marks. The direction of the generated magnetic marks is perpendicular to the direction of the magnetic field.

[0020] 7. During magnetization, a high-intensity uniform circumferential magnetic field can be formed on the workpiece, while reducing energy consumption. This overcomes the defect that a large current is required to magnetize a large diameter workpiece, which may cause burns to the workpiece. The open-and-closed through-coil is fully closed without a transition moving contact, and the workpiece is magnetized in a non-contact manner, which does not cause the risk of sparking and damage to the workpiece surface.

[0021] 8. The clamping wheel can fit on the side of the wheel to prevent the wheel from tipping over. At the same time, since the clamping wheel can also rotate, the rotation of the wheel will not be affected by the rotation of the clamping wheel.

[0022] 9. Through the cooperation of the hydraulic cylinder and the semicircular gear, the two columns can be driven apart or close together at the same time, so as to facilitate the placement and removal of the wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an embodiment in which a flaw detector is arranged below the operation line of a workpiece manipulator.

[0024] Figure 2 It is a cross-sectional view highlighting the structure of the magnetizing device in the embodiment.

[0025] Figure 3 Schematic diagram of the magnetization mechanism in which a portion of the mounting plate is hidden in the embodiment.

[0026] Figure 4 This is the coil distribution diagram of one side mounting plate, i.e. the short end mounting plate.

[0027] Figure 5 This is the coil distribution diagram of the other side mounting plate, i.e. the long end mounting plate.

[0028] Figure 6 yes Figure 3 Enlarged view of part A in the middle.

[0029] Figure 7 Schematic diagram of the cooperation between the mobile device and the base in the embodiment.

[0030] Figure 8 Schematic diagram of the base structure in the embodiment.

[0031] Fig. 9 Schematic diagram of the receiving device in the embodiment.

[0032] Fig.10 Schematic diagram of the lifting device in the embodiment.

[0033] Fig.11 Schematic diagram of the anti-fall device in the embodiment.

[0034] Description of reference numerals:

[0035] 1. Workpiece manipulator operation line; 2. Magnetizing device; 21. Moving coil; 211. Radial part; 212. Axial part; 22. Longitudinal coil; 23. Mounting plate; 24. Insulating plate; 241. Through hole; 25. Spray pipe; 26. Magnetic yoke; 27. Locking assembly; 271. Box; 272. Pressing cylinder; 28. Shell; 3. Driving assembly; 31. Slide rail; 32. Sliding block; 33. Support rod; 34. Electric push rod; 4. Base; 41. Underframe; 42. Recovery trough; 43. Track; 5. Moving device; 51. Moving trolley; 511. Frame; 512. Rolling wheel; 513. Reducer; 514. Motor; 52 , lifting device; 521, support frame; 522, lifting screw; 523, driving motor; 524, screw nut; 525, fixing plate; 526, guide wheel; 53, receiving device; 531, supporting plate; 532, bottom plate; 533, roller; 534, groove; 535, reduction motor; 6, anti-fall device; 61, support seat; 62, clamping rod; 621, vertical rod; 622, connecting rod; 623, vertical rod; 624, fixing sleeve; 625, cross bar; 626, clamping wheel; 627, semicircular gear; 628, swing plate; 629, penetration hole; 63, hydraulic cylinder; 7, darkroom; 8, wheel; 81, tread; 82, wheel belly plate. DETAILED DESCRIPTION

[0036] Reference Figure 1 The embodiment of the present application discloses a three-station wheel flaw detector using a non-contact magnetizing mechanism, including a magnetizing portion and an observation portion arranged on both sides of the magnetizing portion; the magnetizing portion is used to detect the wheel 8 (see Fig.10) is a station for magnetizing and demagnetizing the wheel 8, and the observation unit is a station for observing the magnetized wheel 8 to check whether the wheel 8 is damaged. The existence of the two observation units can work interactively so that the magnetization unit can always perform magnetization or demagnetization work. One magnetization unit and two observation units are the three stations described in this application. After the magnetization is completed, the wheel 8 is transferred to the observation unit for flaw detection. The magnetization unit itself can receive another wheel 8 for magnetization, or demagnetize the wheel 8 sent back by the observation unit. The magnetization unit is in an active working state and does not require too much waiting time. When performing flaw detection, the flaw detector is placed below the wheel 8 workpiece manipulator operation line 1, and the flaw detector realizes the transfer and transportation of the wheel 8 through the wheel 8 workpiece manipulator operation line 1.

[0037] Reference Figure 2 and Figure 3 , magnetizing devices 2 are provided on both sides of the magnetizing portion in another direction. The magnetizing device 2 includes a housing 28 , a mounting plate 23 , a moving coil 21 and a longitudinal coil 22 .

[0038] There are two mounting plates 23, one is a short end mounting plate 23 (such as Figure 4 As shown), the other is a long end mounting plate 23 (as shown Figure 5 As shown). A through hole 241 is provided in the center of the mounting plate. A moving coil 21 is provided on the side where the two mounting plates 23 are close to each other, and the moving coil 21 includes a radial portion 211 and an axial portion 212. Six radial portions 211 corresponding to the positions are provided on the long-end mounting plate 23. Each radial portion 211 is integrally fitted to the surface of the mounting plate 23, so that the radial portion 211 abuts against the mounting plate 23, and the radial portion 211 extends from the edge of the through hole 241 to the edge of the mounting plate 23, and the axial portion 212 extends from both ends of the radial portion 211 in a direction perpendicular to the opposite mounting plate 23. The axial portion 212 on the long-end mounting plate 23 can abut against the axial portion 212 on the short-end mounting plate 23, and the abutting surface is the side surface of the axial portion 212 unfolded along the axial direction. The axial portion 212 on the long-end mounting plate 23 is longer in length, and the axial portion 212 on the short-end mounting plate 23 is shorter in length.

[0039] An insulating plate 24 is provided on the side of the two mounting plates 23 that are away from each other. The insulating plate 24 and the mounting plate 23 are parallel and not in contact. A through hole 241 is provided in the middle of the insulating plate 24, and a through hole 241 is provided in the middle of the mounting plate 23. The through hole 241 of the insulating plate 24 and the mounting plate 23 are in the same position. A long-end yoke 26 is fixed on the long-end mounting plate 23, and a copper bar is wound on the long-end yoke 26. The long-end yoke 26 is U-shaped, and the U-shaped opening faces the short-end mounting plate 23. One protruding end of the U-shaped shape is inserted into the through hole 241 of the long-end mounting plate 23 and protrudes from the space surrounded by the six axial portions 212. A notch is provided on the edge of the long-end mounting plate 23, and the other protruding end of the U-shaped shape protrudes from the notch on the edge of the long-end mounting plate 23.

[0040] The short-end mounting plate 23 is provided with a short-end yoke 26 corresponding to the position of the long-end yoke 26. A copper bar is wound on the short-end yoke 26. The short-end yoke 26 is in the same U-shape as the long-end yoke 26. The U-shape opening faces the long-end mounting plate 23. One protruding end of the U-shape is inserted into the through hole 241 of the short-end mounting plate 23 and protrudes from the space surrounded by the six axial portions 212. A notch is provided at the edge of the short-end mounting plate 23. The notch corresponds to the notch position of the long-end mounting plate 23. The other protruding end of the U-shape protrudes from the notch at the edge of the short-end mounting plate 23.

[0041] The ends of the long end yoke 26 and the short end yoke 26 can be abutted to form a closed rectangular frame structure, which can limit the magnetic field. The yoke 26 restricts the leakage magnetic flux of the induction coil from diffusing outward, avoiding the shell 28 from generating magnetic induction and generating heat.

[0042] The longitudinal coil 22 is arranged between the insulating plate 24 and the mounting plate 23. Both the mounting plate 23 and the insulating plate 24 are made of insulating materials. The mounting plate 23 is used to fix the circumferential coil. The mounting plate 23 and the insulating plate 24 adjacent thereto are installed to fix and clamp the longitudinal coil. The diameter of the longitudinal coil is slightly larger than the tread 81 (refer to Fig.10 ) outer diameter, and the longitudinal coil has four turns.

[0043] Reference Figure 3 and Figure 6 The short end mounting plate 23 is provided with a locking assembly 27, which is located at both ends of the radial portion 211 ( Figure 3 Only one end of the periphery is shown). Figure 4 There are five locking assemblies 27 shown in FIG. 1 , and the remaining one is vacant for connecting the first level of the transformer; correspondingly, Figure 5 The vacant one is used to connect the other pole of the transformer. The locking assembly 27 includes a box body 271 fixed to the side of the mounting plate 23 away from the insulating plate 24 and a clamping cylinder 272 fixedly connected to the box body 271. The piston end of the clamping cylinder 272 is inserted into the box body 271, and the side of the box body 271 away from the mounting plate 23 is open. The axial portion 212 on the short-end mounting plate 23 is fixed to the bottom of the box body 271, and the axial portion 212 on the long-end mounting plate 23 can be inserted into the box body 271, so that the axial portion 212 on the long-end mounting plate 23 is located between the piston rod end of the clamping cylinder 272 and the axial portion 212 on the short-end mounting plate 23. The piston end of the clamping cylinder 272 extends out, and the axial portion 212 on the long-end mounting plate 23 and the axial portion 212 on the short-end mounting plate 23 can be tightly fitted together.

[0044] A spray pipe 25 is provided on the side walls of the two mounting plates 23 that are close to each other. The spray pipe 25 is provided with a nozzle facing the wheel 8. The spray pipe 25 can be connected to an external magnetic suspension tank providing device. The spray pipe 25 sprays the magnetic suspension onto the wheel 8 to be inspected through the nozzle.

[0045] The long end mounting plate 23, the spray pipe 25, the long end yoke 26 and the longitudinal coil 22 form a whole, which is called the long end; the short end mounting plate 23, the spray pipe 25, the short end yoke 26, the longitudinal coil 22 and the locking assembly 27 form a whole, which is called the short end. Figure 2 The long end is slidably connected in the housing 28 and driven by the driving assembly 3; the short end is slidably connected in the housing 28 and driven by the driving assembly 3. The driving assembly 3 makes the long end and the short end move toward each other, driving the two mounting plates 23 to move away from or approach each other, thereby controlling the long end moving coil 21 and the short end moving coil 21 to separate or engage, making it convenient to place the wheel 8 between the two mounting plates and in the moving coil 21. With the cooperation of the moving coil 21, the longitudinal coil 22 and the yoke 26, the wheel 8 is magnetized or demagnetized. Figure 2 The driving assembly 3 includes two slide rails 31 fixedly connected to the inside of the housing 28 and a slide block 32 slidably connected to the slide rails 31. The length direction of the slide rails 31 is perpendicular to the surface of the mounting plate 23. The cross section of the slide rails 31 is T-shaped. The slide block 32 and the slide rails 31 are slidably matched. The slide block 32 can reciprocate along the length direction of the slide rails 31 and will not separate from the slide rails 31. Two inclined support rods 33 are fixedly connected to the upper surface of the slide block 32. One end of the support rod 33 away from the slide block 32 is fixedly connected to the surface of the insulating plate 24. An electric push rod 34 is provided on the side of the slide rail 31 away from the insulating plate 24. The telescopic rod of the electric push rod 34 is fixedly connected to the slide block 32. The movement of the long and short ends can be controlled by the electric push rod 34 to achieve the engagement or separation of the moving coil 21.

[0046] The axial coil enables the wheel 8 to form a wheel web 82 (see Fig.10 ) on the workpiece, the longitudinal coil 22 can cause the wheel 8 to form circumferential magnetic marks on the tread 81, and the yoke 26 can cause the wheel 8 to form circumferential magnetic marks on the wheel belly 82. The longitudinal coil 22 carries current when energized, and the yoke 26 can cause the workpiece to carry current in the circumferential direction. After the yoke 26 is closed to form a loop, the copper bar wrapped around the yoke 26 is energized, which will cause the wheel 8 workpiece to carry current in the circumferential direction, and finally form circumferential magnetic marks. Therefore, the longitudinal coil 22 can detect circumferential damage on the tread 81, and the yoke 26 can detect circumferential damage on the wheel belly 82. Refer to Figure 7 and Figure 8A base 4 is also provided inside the shell 28. The base 4 has a length of three workstations. The base 4 passes through the shell 28 so that the middle workstation of the base 4 corresponds to the shell 28. The length direction of the base 4 is perpendicular to the transportation direction of the wheel 8 workpiece manipulator operation line 1, and the workstations at both ends of the base 4 are observation parts. Two moving devices 5 are provided on the base 4. The wheel 8 transported by the wheel 8 workpiece manipulator operation line 1 will be lifted and received by the moving device 5 in the magnetization part, and then the wheel 8 will be dropped between the long end and the short end. The long end and the short end are combined and pressed together, and the magnetization device magnetizes the wheel 8 on the moving device 5. After the magnetization is completed, the moving device 5 takes the wheel 8 into the empty workstation of the two observation parts (because the other workstation has a moving device 5, it is not empty, and the moving device 5 with the wheel 8 cannot enter) to check the flaw detection situation. The observation part is a darkroom 7 (such as Figure 1 As shown). Another mobile device 5 moves to the magnetization station, receives another wheel 8 for magnetization, and then sends the wheel 8 to another observation unit for inspection. The wheel 8 that has completed the inspection is transported back to the magnetization station by the mobile device 5 for demagnetization, and then sent to the wheel 8 workpiece manipulator operation line 1 for transportation, and then receives a new wheel 8 for magnetization and transportation to the observation unit for inspection. The two mobile devices 5 alternately transport the wheels 8 for magnetization and demagnetization, so that the magnetization unit is always in working condition, and the two wheels 8 are inspected at the same time, which improves work efficiency.

[0047] Reference Figure 8 The base 4 includes a base frame 41 welded horizontally and vertically and three recovery slots 42 arranged in the base frame 41. Each recovery slot 42 corresponds to a workstation. The recovery slot 42 is an inverted quadrangular pyramid shape. The lowest point of the recovery slot 42 is connected to a recovery pipe. The recovery slot 42 can collect the dripping magnetic suspension to achieve reuse and reduce waste.

[0048] Reference Figure 8 and Fig. 9 The moving device 5 includes a moving trolley 51 that can move along the length direction of the base 4 and a lifting device 52 arranged on the moving trolley 51, and a receiving device 53 is also provided on the lifting device 52; when it is necessary to receive the wheel 8, the moving trolley 51 moves to the bottom of the wheel 8 workpiece manipulator operation line 1, and the lifting device 52 controls the receiving device 53 to rise to receive the wheel 8 sent down by the wheel 8 workpiece manipulator operation line 1, thereby completing the receiving work of the wheel 8. The moving trolley 51 can transport the wheel 8, so as to observe and inspect the wheel 8 or send it back to the wheel 8 workpiece manipulator operation line 1, completing a complete process.

[0049] The mobile trolley 51 includes a frame 511 and rolling wheels 512 arranged on both sides of the frame 511. There are two rolling wheels 512 on one side of the frame 511. A reducer 513 is arranged between the two rolling wheels 512 at one end of the frame 511. The input end of the reducer 513 is coaxially connected to a motor 514. The output part of the reducer 513 is a horizontal axis. The two ends of the horizontal axis are coaxially connected to the two rolling wheels at the end of the frame 511. The motor 514 can drive the two rolling wheels 512 to rotate at the same time. The upper surface edge of the base frame 41 is fixedly connected with a track 43 along the length direction. The rolling wheel 512 is in the groove of the track 43 and can roll in the track 43, so the mobile trolley 51 can move along the length direction of the base 4. The track 43 is arranged vertically. The opening of the track 43 is located on the side where the two tracks are close to each other. The track 43 acts as a limiter so that the mobile trolley 51 will not move horizontally.

[0050] Reference Fig. 9 and Fig.10 The lifting device 52 includes a support frame 521 vertically arranged on the frame body 511 and a lifting screw 522 arranged inside the support frame 521. The support frame 521 is a rectangular frame structure. The two ends of the lifting screw 522 are rotatably connected to the upper and lower ends of the support frame 521 respectively, so that the lifting screw 522 can rotate along its own axis. The upper end of the support frame 521 is provided with a driving motor 523 for driving the lifting screw 522 to rotate. The lifting screw 522 is threaded with a screw nut 524, and the screw nut 524 is connected to the receiving device 53; the driving motor 523 drives the lifting screw 522 to rotate, and the screw nut 524 itself does not rotate, but moves up and down along the axial direction of the lifting screw 522, thereby driving the receiving device 53 to rise or fall.

[0051] Fixed plates 525 are provided on both sides of the lead screw nut 524. The lead screw nut 524 is fixedly connected to the two fixed plates 525 at the same time. A guide wheel 526 is provided on the side of the two fixed plates 525 away from each other. The guide wheel 526 is attached to the surface of the support frame 521 perpendicular to the fixed plate 525. The fixed plate 525 can limit the lead screw nut 524 so that the lead screw nut 524 will not rotate and can prevent the lead screw nut 524 from moving longitudinally. The existence of the guide wheel 526 can prevent the fixed plate 525 from moving laterally. Therefore, under the cooperation of the guide wheel 526 and the lead screw nut 524, the lead screw nut 524 can prevent the shear force from being applied to the lifting screw 522, thereby extending the service life of the lifting screw 522.

[0052] Reference Fig. 9 and Fig.10The receiving device 53 includes a support plate 531 fixedly connected to the lead screw nut 524 and a bottom plate 532 fixedly connected to the support plate 531, and the bottom plate 532 is arranged horizontally; two rollers 533 are arranged on the upper surface of the bottom plate 532, and grooves 534 are opened on the circumference of the rollers 533; a reduction motor 535 is also arranged on the bottom plate 532, and the reduction motor 535 and the rollers 533 are linked by gear and chain transmission; when the receiving device 53 receives the wheel 8, the wheel 8 is placed on the two rollers 533, and the flange of the wheel 8 can enter the groove 534; the reduction motor 535 can drive the two rollers 533 to rotate, and then drive the wheel 8 to rotate, and magnetize the wheel 8.

[0053] Reference Fig.10 Two gears are coaxially arranged at the end of the roller 533 close to the reduction motor 535, and one gear is arranged on the other roller 533. One gear of the roller 533 close to the reduction motor 535 is connected to the output end gear of the reduction motor 535 through a chain, and another gear of the roller 533 close to the reduction motor 535 is connected to the gear of the roller 533 far from the reduction motor 535 through a chain. The two rollers 533 rotate in the same direction, so that the wheel 8 rotates stably.

[0054] Reference Fig.10 and Fig.11 An anti-falling device 6 is also provided on the bottom plate 532 , which can prevent the wheel 8 from falling over and ensure that the wheel 8 can be in an upright state, so that the tread 81 and the wheel belly plate 82 of the entire wheel 8 are clamped in the anti-falling device 6 .

[0055] The anti-fall device 6 includes a support base 61, two sets of clamping rods 62 hinged on the support base 61 and a driving member hinged to one clamping rod 62. The two sets of clamping rods 62 are hinged on the same side of the support base 61. The clamping rod 62 is provided with a semicircular gear 627. The semicircular gears 627 of the two sets of clamping rods 62 are externally meshed.

[0056] The semicircular gear 627 is fixedly connected with a vertical rod 621 and a semicircular arc-shaped connecting rod 622. The end of the connecting rod 622 away from the vertical rod 621 is fixedly connected with a vertical vertical rod 623. The vertical rod 623 is arranged parallel to the vertical rod 621. A fixing sleeve 624 is fixedly connected to the vertical rod 623 and the vertical rod 621. A crossbar 625 is inserted in the fixing sleeve 624. The crossbar 625 is parallel to the hinge axis of the vertical rod 621 on the support seat 61. The outer wall of the fixing sleeve 624 is provided with a through hole 629. The through hole 629 is provided with an internal thread. The bolt is threadedly connected to the vertical rod 621 and / or the vertical rod (623) through the through hole 629 and abuts against the crossbar (625). A clamping wheel 626 is provided at the end of the crossbar 625. The clamping wheel 626 is axially the same as the crossbar 625. The clamping wheel 626 can be attached to the surface of the wheel 8, and can provide limited support for the wheel 8. The clamping wheel 626 can rotate freely when the wheel 8 rotates, preventing the wheel 8 from tipping over, and will not affect the rotation of the wheel 8. The existence of the vertical rod 621 and the vertical rod 623 can better support the wheel 8. The semi-circular arc-shaped connecting rod 622 can make the connecting rod 622 avoid the thicker part in the center of the wheel 8, avoiding interference between the connecting rod 622 and the wheel 8. The provision of multiple fixing sleeves 624 can make the crossbar 625 be set at different positions, so that the anti-falling device 6 can assist in positioning wheels 8 of different models.

[0057] The cross bar 625 and the fixing sleeve 624 are connected by fixing bolts for abutment and fixing. In another embodiment, the cross bar 625 and the fixing sleeve 624 are connected by interference fit.

[0058] The driving member can drive the vertical rod 621 and the vertical rod 623 to move closer to or away from the wheel 8, thereby facilitating the placement or removal of the wheel 8.

[0059] The driving member is a hydraulic cylinder 63 vertically arranged on one side of the support seat 61. The lower end of the hydraulic cylinder 63 is hinged on the bottom plate 532. The end of the piston rod of the hydraulic cylinder 63 is hinged with a swing plate 628. The swing plate 628 is fixedly connected to a vertical rod 621. The lower ends of the two vertical rods 621 are both arranged in the support seat 61, and the lower ends of the vertical rods 621 are hinged to the support seat 61, so that the vertical rods 621 can swing; the surfaces of the two vertical rods 621 on one side close to each other are fixedly connected with semicircular gears 627, and the two semicircular gears 627 can mesh with each other. The hydraulic cylinder 63 drives the vertical rods 621 to swing. Because the two semicircular gears 627 are meshed, the two vertical rods 621 can be close to or away from each other at the same time, which can realize the position limitation of the wheel 8. In another embodiment, the driving member can be a servo motor, and the output shaft of the servo motor is coaxially arranged with the vertical rod 621. The servo motor rotates the vertical rod 621 and the semicircular gear 627 to make the upper parts of the two sets of clamping rods 62 move away from or closer to each other.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A non-contact magnetization mechanism, characterized in that: The invention comprises a long end and a short end, wherein the long end and the short end are arranged opposite to each other, and each of the long end and the short end comprises a mounting plate (23), a moving coil (21) and a yoke (26). A through hole (241) is provided at the center of the mounting plate (23), and the moving coil (21) is arranged on one side of the mounting plate (23) close to each other. The moving coil (21) comprises a radial portion (211) and an axial portion (212), wherein the radial portion (211) abuts against the surface of the mounting plate (23), the radial portion (211) extends from the edge of the through hole (241) to the edge of the mounting plate (23), and the axial portion (212) extends from both ends of the radial portion (211) in a direction perpendicular to the opposite mounting plate (23), and the axial portion (212) on the long-end mounting plate (23) can abut against the axial portion (212) on the short-end mounting plate (23).

2. A non-contact magnetization mechanism according to claim 1, characterized in that: A locking assembly (27) is provided on the short end mounting plate (23), and the locking assembly (27) causes the long end axial portion (212) and the short end axial portion (212) to be pressed against each other.

3. A non-contact magnetization mechanism according to claim 2, characterized in that: The locking assembly (27) is arranged at the end of the radial portion (211), and the locking assembly (27) comprises a box body (271) fixed to the side of the short end mounting plate (23) close to the long end mounting plate (23) and a clamping cylinder (272) fixed on the box body (271), the piston end of the clamping cylinder (272) is inserted into the box body (271), and the side of the box body (271) away from the short end mounting plate (23) is open, the axial portion (212) on the short end mounting plate (23) is fixed to the bottom of the box body (271), and the axial portion (212) on the long end mounting plate (23) can be inserted into the box body (271).

4. A non-contact magnetization mechanism according to claim 3, characterized in that: An end of the axial portion (212) away from the radial portion (211) is provided with a chamfer.

5. A non-contact magnetization mechanism according to claim 3, characterized in that: The yoke (26) is fixed on the mounting plate (23). The yoke (26) is U-shaped, with the U-shaped opening facing the other mounting plate (23). One protruding end of the U-shape is inserted into the through hole (241) of the mounting plate (23), and the other protruding end of the U-shape protrudes from the edge of the mounting plate (23).

6. A non-contact magnetization mechanism according to claim 5, characterized in that: It also comprises a longitudinal coil (22), the longitudinal coil (22) being annular and coaxially arranged with the through hole (241), the magnetic yoke (26) being inserted into the longitudinal coil (22), and the longitudinal coil (22) being arranged on a side of the mounting plate (23) away from another mounting plate (23).

7. A non-contact magnetization mechanism according to claim 5, characterized in that: A notch is provided on the edge of the mounting plate (23), and the other U-shaped extending end of the yoke (26) extends out from the notch.

8. A non-contact magnetization mechanism according to claim 5, characterized in that: A spray pipe (25) is fixedly arranged on one side of the mounting plates (23) close to each other, and the spray pipe (25) is connected to a magnetic suspension tank.

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