CN113567154B - A testing arrangement for vehicle wheel - Google Patents
A testing arrangement for vehicle wheel Download PDFInfo
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- CN113567154B CN113567154B CN202111126335.4A CN202111126335A CN113567154B CN 113567154 B CN113567154 B CN 113567154B CN 202111126335 A CN202111126335 A CN 202111126335A CN 113567154 B CN113567154 B CN 113567154B
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
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- 230000000737 periodic effect Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 11
- 230000002159 abnormal effect Effects 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008439 repair process Effects 0.000 description 7
- 230000005291 magnetic effect Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
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- 239000004698 Polyethylene Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/013—Wheels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/12—Static balancing; Determining position of centre of gravity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/26—Determining imbalance by oscillating or rotating the body to be tested with special adaptations for marking, e.g. by drilling
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Abstract
The invention relates to a testing device for vehicle wheels, which belongs to the technical field of static balance and dynamic balance testing and comprises a testing platform and a host, wherein the testing platform comprises a first platform surface and a second platform surface, the first platform surface is also provided with a dynamic loading assembly, a clamp assembly and a pendulum difference measuring assembly, the dynamic loading assembly is used for carrying out loading action of periodic variable load on the end parts of an inner rim and an outer rim of a hub to be detected, the clamp assembly is used for clamping and fixing the hub to be detected and can realize the rotating action of the hub, and the pendulum difference measuring assembly is used for detecting the axial runout and the radial runout of the end parts of the inner rim and the outer rim of the hub to be detected. The invention applies periodic load to the repaired hub through the dynamic loading assembly to detect whether the repaired hub has the phenomena of deformation, cracking and the like, and detects whether the repaired hub has the swing error parameter in the standard range through detecting the axial run-out and radial run-out parameters of the end part of the outer rim in the hub through the swing error measuring assembly.
Description
Technical Field
The invention relates to the technical field of static balance and dynamic balance tests, in particular to a test device for a vehicle wheel.
Background
The automobile can be collided with various kinds of bumps in the driving process, so that damages such as scratches, defects and the like on the surface of the hub are generated, and after the hub is renovated, the automobile is just like a new product, so that the maintenance cost of an automobile owner is saved. The wheel hub damaged by the defect needs to be tested according to related parameters after being repaired, and the vehicle can be loaded and used after potential safety hazards are eliminated, so that the safety factor of the vehicle wheel is ensured. However, after the wheel hub of the vehicle is repaired by the wheel hub repair personnel at present, the wheel hub repair personnel are limited by detection equipment, and only use a common dynamic balancing instrument on the market to perform dynamic balance measurement on the repaired wheel hub, the measurement method is rough, and the condition that whether the repaired wheel hub generates secondary deformation and cracks under the condition that the wheel is under dynamic load cannot be tested. The relatively professional and high-precision hub measuring equipment only exists on a hub production line at present, although the equipment is powerful in function and high in detection precision, and can be used for accurately testing a plurality of parameters of a produced hub, the equipment is large in size and high in price, and it is unrealistic for practitioners in the maintenance industry to purchase the equipment for detecting the repaired hub.
Therefore, a small-size, convenient-to-operate and moderate-price hub detection device is needed to assist a hub repair worker in performing dynamic loading test on the repaired hub and measuring whether relevant parameters of the hub are in a standard range under the condition of load, so that the repaired quality of the hub can be checked, and the safety coefficient of the repaired hub can be ensured by guiding the hub repair process.
Disclosure of Invention
In order to solve the problems proposed in the background art, the invention provides a testing device for a vehicle wheel, which comprises a dynamic loading assembly and a runout measuring assembly, wherein the dynamic loading assembly is used for applying a periodically-changed load to a repaired hub so as to detect whether the repaired hub has the phenomena of deformation, cracking and the like; axial runout and radial runout parameters of the end part of the outer rim in the hub are detected through the runout measuring assembly, and whether the repaired hub runout parameters are in a standard range or not is detected.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a testing arrangement for vehicle wheel, includes testboard and host computer, the testboard includes first mesa and second mesa, still be equipped with dynamic loading subassembly, anchor clamps subassembly and run-out tolerance measuring component on the first mesa, dynamic loading subassembly is used for carrying out the loading effect of periodic variable load to waiting to detect wheel hub's inside and outside rim tip, the anchor clamps subassembly is used for treating that the wheel hub that detects presss from both sides tightly and fixes and can realize wheel hub's rotation effect, run-out tolerance measuring component is used for treating that the wheel hub that detects carries out the detection of the axial of inside and outside rim tip and runout.
Furthermore, the clamp assembly comprises an expansion mechanism, a driving shaft and a clamp, wherein the lower end of the driving shaft is connected with a gear box, the driving shaft is driven to rotate by a gear set in the gear box, the expansion mechanism is arranged at a flange plate at the end part of the driving shaft, and a hub placed at the flange plate can be expanded and clamped.
Furthermore, the gear box is fixed on the upper portion of the second table board, a gear set in the gear box is connected with a driving motor for transmission, the driving motor and a host are connected in a working state and controlled by the host, the driving shaft penetrates through the installation of the first table board, a bearing is installed in the middle of the driving shaft, the bearing and the first table board are matched and used for radially fixing the driving shaft, the phenomenon that the driving shaft radially jumps due to centrifugal force in the rotating process of the driving hub is prevented from being driven by the driving shaft, a conductive sliding ring is further installed in the middle of the driving shaft, the purpose of supplying power to the magnet exciting coil in the counter bore in the rotating motion state of the driving shaft is achieved through the conductive sliding ring, the conductive sliding ring and the magnet exciting coil are both connected with the host, and the working state is controlled by the host.
Furthermore, the upper end of the driving shaft is fixed with a flange plate, the upper end surface of the flange plate is provided with a first inverted T-shaped groove and a second inverted T-shaped groove radially outwards from the center, the number of the first inverted T-shaped groove and the number of the second inverted T-shaped groove distributed on the upper end surface of the flange plate are not less than four, the first inverted T-shaped groove and the second inverted T-shaped groove are arranged at intervals and are located at equal positions of the end surface of the flange plate, and the first inverted T-shaped groove is connected with the expansion mechanism in a sliding mode.
Further, the rectangle spout in the second groove of falling "T" shape is used for holding fixation nut, when meetting such as the wheel hub size that waits to detect is great, wheel hub is heavier and carry out the load measurement to wheel hub, need use the long bolt to pass the wheel hub bolt hole, will wait to detect wheel hub fixed to ring flange tip through the nut spiro union of long bolt and second groove of falling "T" shape.
Furthermore, a first counter bore is formed in the upper end portion of the flange plate from top to bottom, sliding grooves are vertically formed in the quartering positions of the inner wall of the first counter bore, the sliding grooves are matched with a second guide block of the shaft rod, the shaft rod in the counter bore can be guided when moving axially, and the rotating motion of the shaft rod along the axis of the shaft rod is limited.
Furthermore, the excitation coil arranged in the first counter bore can excite a strong magnetic field under the condition of electrifying, so that the shaft lever positioned in the counter bore can be attracted and moved by using the strong magnetic effect generated by the excitation coil.
The expanding mechanism comprises a moving block and a conical block, one side of the moving block comprises a conical surface portion, a first guide block is fixed at the bottom of the moving block and is in sliding connection with a first inverted T-shaped groove, a groove is formed in the outer surface of the moving block, an annular tightening belt is installed in the groove, the annular tightening belt has elasticity, and the restoring effect of the moving block after outward expansion and sliding movement along the first inverted T-shaped groove can be achieved.
Furthermore, the conical block is located in a first counter bore of the flange plate, a circular groove is formed in the end face of the upper portion of the conical block, a threaded rod is fixed to the center of the circular groove, a first nut and a second nut are connected to the threaded rod in a threaded mode, a shaft rod is integrally formed on the lower portion of the conical block, second guide blocks are fixed to the quartering positions of the shaft rod, and the second guide blocks are in sliding fit with sliding grooves in the second counter bore to play a guiding role in guiding the vertical reciprocating axial movement of the shaft rod.
Furthermore, the end face of the lower portion of the shaft rod is provided with a second counter bore from bottom to top, a return spring is arranged in the second counter bore, the return spring can achieve the rebound reset effect of the shaft rod after downward pressing movement, the clamping apparatus comprises a support and a support arm, the support is of a cross-shaped structure, a through hole is formed in the cross-shaped intersection, the support and the support arm are hinged and fixed through a hinge shaft, the change of the support arm relative to the included angle of the support can be achieved, and the application range of the clamping apparatus is enlarged.
The other end of the support arm is connected with a conical head screw rod in a threaded manner, the lower portion of the conical head screw rod is provided with a conical seat, the conical seat can be used for achieving the purpose that when a large-size or heavy hub needs to be detected, a clamping apparatus is matched with a conical block to clamp and position the hub through a hub bolt hole to be detected, and the support seat and the support arm of the clamping apparatus are hinged through a hinge shaft, so that the hub can adapt to hubs of different sizes through adjusting the relative positions of the support seat and the support arm, the clamping apparatus is connected with a threaded rod through a through hole of the support seat and is fastened through a first nut and a second nut, a long hole is longitudinally formed in the support arm, and the conical head screw rod penetrates through the long hole to be fixed on the support arm through a locking nut.
The dynamic loading subassembly includes vertical movement portion and horizontal migration portion, vertical movement portion is including the first rack guide rail and the first slider of mutually supporting, first slider is through first motor drive, horizontally connect has the second rack guide rail on the first slider, be connected with the second slider on the second rack guide rail, the second slider passes through second motor drive, second slider sub-unit connection has loading portion, loading portion includes mutually perpendicular horizontal pressure roller and vertical pressure roller, all install radial pressure sensor on horizontal pressure roller and the vertical pressure roller.
Further, horizontal impression roller and vertical impression roller can realize that wheel hub carries out axial and radial loading effect to the interior outer terminal surface of rim when rotary motion, use horizontal impression roller and vertical impression roller to carry out the loading test to wheel hub after restoreing, thereby whether the phenomenon of deformation and crackle can appear in wheel hub after the test restoration, wherein all install radial pressure sensor on the footpath of horizontal impression roller and vertical impression roller, can detect the change of radial and axial reaction force in rim edge, and the change rule of the reaction force that catches through radial pressure sensor comes the analysis to judge whether the anti yield strength of repaired wheel hub's rim tip accords with the standard.
Furthermore, the size of the load can be changed through the matching of the first rack sliding rail and the first sliding block, and the linear continuous variable of the load value can be controlled, wherein the first rack sliding rail, the first sliding block, the second rack sliding rail and the second sliding block are matched together to adjust the relative position of the loading part and the hub to be detected, and the first motor, the second motor and the radial pressure sensor are connected with the host.
The pendulum error measuring assembly comprises a third rack guide rail and a third slider which are matched with each other, the third slider is driven by a third motor, a fourth rack guide rail is connected onto the third slider, a fourth slider is connected onto the fourth rack guide rail, the fourth slider is driven by a fourth motor, and a laser scanner is connected onto the fourth slider.
Furthermore, the laser scanner can adjust the relative position of the inner rim end and the outer rim end of the hub under the driving of the third sliding block and the fourth sliding block after the diameter and width dimension data of the hub are input into the host, and the inner rim end and the outer rim end of the hub are subjected to runout scanning measurement.
Furthermore, the third motor, the fourth motor and the laser scanner are connected with the host, the working state of the third motor, the fourth motor and the laser scanner is controlled by the host, the laser scanner can measure the axial runout and the radial runout of the inner rim end and the outer rim end of the hub under the state that the hub to be detected is rotationally driven by the driving shaft, the axial runout and the radial runout of the inner rim end and the outer rim end of the hub can be more accurately measured through the laser scanner, so that whether the repaired hub has the phenomenon that the axial runout and the radial runout data exceed the range or not can be detected, an abnormal part can be indicated through laser beam marks when the runout and the range is detected, and an operator observes the position of the hub indicated by the laser beam and then heavily detects the marked part and carries out secondary repairing processing on the part.
Furthermore, the laser scanner can also work in cooperation with the dynamic loading assembly, laser beam irradiation marking is carried out on the abnormal part of the hub after the dynamic loading test is finished, and the worker can conveniently find out the abnormal part of the hub.
Furthermore, the first table top is a fixed base of a first rack guide rail and a third rack guide rail, the second table top is fixedly used for supporting and fixing the gear box through a pair of cross beams on the detection table, and a rectangular window is formed in the first table top and used for the loading part to pass through when moving downwards.
The invention also provides a method for detecting a vehicle wheel by using the testing device, which comprises the following steps:
one, dynamic loading test:
the method comprises the following steps: placing the hub on a flange plate of a driving shaft, ensuring that a central hole of the hub is coaxial with the flange plate, inputting a clamping instruction to a host machine, clamping the hub by using a clamp assembly, and fixing the hub on the flange plate of the driving shaft in a rigid secondary mode through a long bolt after the hub is clamped;
step two: after the hub is fixed to the flange plate, after the diameter and width size numerical values of the hub are input to a host, the driving motor rotates to drive the driving shaft to rotate, and the rotating driving shaft drives the hub to synchronously rotate;
step three: inputting a command to a host to control the loading part to move so as to sequentially load and test the end parts of the inner and outer rims of the hub, wherein the loading part transmits captured data into the host through a radial pressure sensor;
step four: the host computer carries out operation analysis according to the data transmitted by the radial pressure sensor, judges whether the anti-yield strength of the repaired hub meets the standard or not, if the anti-yield strength of the repaired hub does not meet the standard, the host computer controls the laser scanner to emit laser beams and controls the driving shaft to rotate to mark abnormal positions, so that a worker can find out the abnormal positions of the hub conveniently and repair the hub again;
secondly, testing the swing error:
the method comprises the following steps: placing the hub on a flange plate of a driving shaft, ensuring that a central hole of the hub is coaxial with the flange plate, inputting a clamping instruction to a control panel in a host machine, and clamping the hub by using a clamp assembly;
step two: after the hub is fixed to the flange plate, after the diameter and width size numerical values of the hub are input to a host, the driving motor rotates to drive the driving shaft to rotate, and the rotating driving shaft drives the hub to synchronously rotate;
step three: the laser scanner is driven by the third sliding block and the fourth sliding block to carry out scanning measurement on the axial and radial runout difference of the end part of the outer rim in the hub, and the scanned data are transmitted to the host;
step four: the host computer judges whether the axial and radial runout difference of wheel hub inside and outside rim tip surpass the scope after carrying out the analytical calculation to the data of laser scanner transmission, if the runout difference value surpasss the scope, the host computer control laser scanner throws the laser beam to control the rotatory unusual position of mark that comes of drive shaft, the maintenance personal of being convenient for finds out wheel hub unusual position, and restores once more to wheel hub.
The invention has the beneficial effects that: the invention respectively carries out fatigue strength measurement and radial and axial runout measurement on the repaired wheel hub through the dynamic loading assembly and the runout testing assembly, and can respectively carry out axial and radial loading tests on the end part of the inner and outer wheel rims of the wheel hub through the dynamic loading assembly so as to detect the repairing effect and detect whether the detected wheel hub generates deformation and cracking due to the applied load; axial and radial runout measurement can be carried out on the end portions of inner and outer rims of the repaired hub through radial and axial runout tests, whether the runout data of the hub exceed a standard value is tested, abnormal positions are found out, and the dynamic loading assembly and the runout measuring assembly can be mutually matched to carry out comprehensive analysis and test on the hub together, so that the quality of the repaired hub can be tested, and the safety coefficient of the repaired hub can be ensured by guiding the hub repairing process.
Drawings
In order to more clearly explain the technical solutions in the embodiments, the drawings in the embodiments will be briefly described below.
FIG. 1 is a perspective view of a testing platform according to the present invention.
FIG. 2 is a view of the position and configuration of the dynamic loading assembly, the clamp assembly and the run out measurement assembly of the present invention.
FIG. 3 is a structural view of the drive shaft, clamp assembly and expansion mechanism of the present invention in position.
FIG. 4 is a structural view of the clamp assembly of the present invention.
Figure 5 is a cross-sectional view of a jig and fixture assembly of the invention.
In the figure: 1. a test bench; 2. a host; 3. a first table top; 4. a second table top; 5. dynamically loading the component; 6. a clamp assembly; 7. a yaw difference measurement assembly; 8. an expansion mechanism; 9. a drive shaft; 10. a fixture; 11. a gear case; 12. a drive motor; 13. a bearing; 14. a conductive slip ring; 15. a flange plate; 16. a first inverted "T" shaped slot; 17. a second inverted "T" shaped slot; 18. a first counterbore; 19. a chute; 20. a field coil; 21. a moving block; 22. a conical block; 23. a conical surface portion; 24. a first guide block; 25. a trench; 26. an annular tightening band; 27. a circular groove; 28. a threaded rod; 29. a first nut; 30. a second nut; 31. a shaft lever; 32. a second guide block; 33. a second counterbore; 34. a return spring; 35. a support; 36. a support arm; 37. a through hole; 38. a hinge shaft; 39. a conical head screw; 40. a conical seat; 41. a vertical moving section; 42. a horizontal moving section; 43. a first rack guide; 44. a first slider; 45. a first motor; 46. a second rack guide; 47. a second slider; 48. a second motor; 49. a loading section; 50. a horizontal pressing roller; 51. a vertical pressing roller; 52. a radial pressure sensor; 53. a third rack guide rail; 54. a third slider; 55. a third motor; 56. a fourth rack guide rail; 57. a fourth slider; 58. a fourth motor drive; 59. a laser scanner; 60. a cross beam; 61. a long hole; 62. locking the nut; 63. a rectangular window.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention. The detailed structure of the present invention will be apparent from the following detailed description of the structure with reference to fig. 1 to 5, and all the structural contents mentioned in the following embodiments are referred to in the accompanying drawings of the specification.
As shown in fig. 1 to 5, the testing device for the vehicle wheel of the embodiment includes a testing platform 1 and a host computer 2, the testing platform 1 includes a first table board 3 and a second table board 4, a dynamic loading component 5 is further arranged on the first table board 3, a clamp component 6 and a runout measuring component 7, the dynamic loading component 5 is used for carrying out loading action of periodic variable load on the end portions of an inner rim and an outer rim of a wheel hub to be detected, the clamp component 6 is used for clamping and fixing the wheel hub to be detected and can realize the rotation action of the wheel hub, and the runout measuring component 7 is used for detecting axial runout and radial runout of the end faces of the inner rim and the outer rim of the wheel hub to be detected.
The anchor clamps subassembly 6 includes expanding mechanism 8, drive shaft 9 and fixture 10, the 9 lower extremes of drive shaft are connected with gear box 11, drive shaft 9 is driven rotatoryly by the gear train in the gear box 11, gear box 11 is fixed in 4 upper portions of second mesa, the gear train in the gear box 11 is connected the transmission with driving motor 12, drive shaft 9 runs through in the installation of first mesa 3, the mid-mounting of drive shaft 9 has bearing 13, bearing 13 is used for carrying out radial fixed to drive shaft 9 with the cooperation of first mesa 3, drive shaft 9 middle part still installs electrically conductive sliding ring 14.
Specifically, the gear box 11 is a speed reducer to prevent the overload of the driving motor 12 and to smoothly rotate the hub through the driving shaft 9 when detecting a heavy hub.
The upper end of the driving shaft 9 is fixed with a flange 15, the upper end face of the flange 15 is provided with a first inverted T-shaped groove 16 and a second inverted T-shaped groove 17 radially outwards from the center, the number of the first inverted T-shaped groove 16 and the number of the second inverted T-shaped groove 17 distributed on the upper end face of the flange 15 are not less than four, the first inverted T-shaped groove 16 and the second inverted T-shaped groove 17 are distributed at intervals and are positioned at equal division positions of the end face of the flange 15, the first inverted T-shaped groove 16 is connected with an expansion mechanism 8 in a sliding mode, a rectangular sliding groove 19 of the second inverted T-shaped groove 17 is used for accommodating a fixing nut, the upper end of the flange 15 is provided with a first counter bore 18 from top to bottom, the inner wall of the first counter bore 18 is vertically provided with a sliding groove 19 at equal division positions, and the first counter bore 18 is also provided with an excitation coil 20.
More specifically, the exciting coil 20 needs to use a strong magnetic coil so as to ensure that the magnetic field generated by the exciting coil 20 in the energized state can overcome the upward resistance generated by the combined action of the return spring 34 and the annular tightening belt 26 to perform the magnetic attraction movement on the shaft 31.
The expanding mechanism 8 comprises a moving block 21 and a conical block 22, one side of the moving block 21 comprises a conical surface portion 23, a first guide block 24 is fixed at the bottom of the moving block 21, the first guide block 24 is in sliding connection with the first inverted T-shaped groove 16, a groove 25 is formed in the outer surface of the moving block 21, and an annular tightening belt 26 is installed in the groove 25.
Specifically, the annular tightening band 26 is made of a rubber material with good corrosion resistance and elastic effect, so that the resetting effect of the moving block 21 after outward expansion can be ensured.
The conical block 22 is positioned in a first counter bore 18 of the flange 15, a circular groove 27 is formed on the end face of the upper part of the conical block 22, a threaded rod 28 is fixed at the central part of the circular groove 27, a first nut 29 and a second nut 30 are screwed on the threaded rod 28, a shaft lever 31 is integrally formed on the lower part of the conical block 22, a second guide block 32 is fixed on the quartering position of the shaft lever 31, the second guide block 32 is in sliding fit with a sliding chute 19 in the second counter bore 33, a second counter bore 33 is formed on the end face of the lower part of the shaft lever 31 from bottom to top, a return spring 34 is arranged in the second counter bore 33, the fixture 10 comprises a support 35 and a support arm 36, the support 35 is of a cross structure, a through hole 37 is formed at the intersection of the cross, the support 35 and the support arm 36 are hinged and fixed through a hinge shaft 38, a conical head screw 39 is screwed at the other end of the support arm 36, a conical seat 40 is arranged on the lower part of the conical head screw 39, the fixture 10 is connected with the threaded rod 28 through the through hole 37 of the support 35, and is fastened by the first nut 29 and the second nut 30, the support arm 36 is also provided with a long hole 61, and the conical head screw rod 39 passes through the long hole 61 and is fixed on the support arm 36 by a locking nut 62.
Specifically, fixture 10 is only carrying out the runout to the hub and is measuring supplementary anchor clamps subassembly 6 and fix a position the use to great size and heavier wheel hub, can not be used for wheel hub and drive shaft 9's rigid connection to as long as guarantee that conical seat 40 of conical head screw rod 39 can have certain pretension degree with wheel hub's bolt hole when fastening fixture 10, if need carry out rigid connection with drive shaft 9 and carry out the dynamic loading test with wheel hub, need select for use the stock bolt to pass the wheel hub bolt hole and the ring flange 15 in the nut spiro union in the second "T" groove 17 press from both sides tight fixedly wheel hub.
The dynamic loading assembly 5 comprises a vertical moving part 41 and a horizontal moving part 42, the vertical moving part 41 comprises a first rack guide rail 43 and a first slide block 44 which are matched with each other, the first slide block 44 is driven by a first motor 45, a second rack guide rail 46 is horizontally connected to the first slide block 44, a second slide block 47 is connected to the second rack guide rail 46, the second slide block 47 is driven by a second motor 48, a loading part 49 is connected to the lower part of the second slide block 47, the loading part 49 comprises a horizontal pressurizing roller 50 and a vertical pressurizing roller 51 which are perpendicular to each other, and radial pressure sensors 52 are installed on the horizontal pressurizing roller 50 and the vertical pressurizing roller 51.
Specifically, the polyethylene material is wrapped on the end parts of the horizontal loading roller 50 and the vertical loading roller 51, which are in contact with the hub, so that the requirement that the secondary damage to the hub cannot be caused when the load is applied to the end parts of the inner rim and the outer rim of the hub can be met, and the sufficient pressure on the end part of the outer rim in the hub can be guaranteed.
The swing difference measuring assembly 7 comprises a third rack guide rail 53 and a third slide block 54 which are matched with each other, the third slide block 54 is driven by a third motor 55, a fourth rack guide rail 56 is connected onto the third slide block 54, a fourth slide block 57 is connected onto the fourth rack guide rail 56, the fourth slide block 57 is driven by a fourth motor 58, and a laser scanner 59 is connected onto the fourth slide block 57.
Specifically, the scanning equipment of broad width is required to be selected for use by laser scanner 59 to can satisfy when outer rim end carries out the run-out tolerance measurement in the wheel hub by laser scanner 59, the region that the tip of the inside and outside rim of cover wheel hub that its scanning interval can be complete will be measured, and after wheel hub diameter and width size data input host computer 2 laser scanner 59 can adjust the relative position with the inside and outside rim end of wheel hub under the drive of third slider 54 and fourth slider 57, the realization is measured the inside and outside rim end of wheel hub carries out the run-out tolerance scanning.
The first table top 3 is a fixed base of the first rack guide rail 43 and the third rack guide rail 53, the second table top 4 is fixed through a pair of cross beams 60 on the detection table for supporting and fixing the gear box 11, and the first table top 3 is provided with a rectangular window 63 for the loading part 49 to pass through when moving downwards.
Based on the testing device for the vehicle wheel as described above, the invention also provides a method for detecting the vehicle wheel by using the testing device as described above, which comprises the following steps:
one, dynamic loading test:
step one, a hub is placed on a flange plate 15 of a driving shaft 9, a central hole of the hub is ensured to be coaxial with the flange plate 15, a clamping instruction is input into a host machine 2, the hub is clamped by a clamp assembly 6, and the hub is rigidly fixed on the flange plate 15 of the driving shaft 9 for the second time through a long bolt after the hub is clamped;
after the hub is fixed on the flange plate 15 and the diameter and width size values of the hub are input into the host machine 2, the driving motor 12 rotates to drive the driving shaft 9 to rotate, and the rotating driving shaft 9 drives the hub to synchronously rotate;
inputting an instruction to the host machine 2 to control the loading part 49 to move so as to sequentially load and test the inner edge and the outer edge of the hub, wherein the loading part 49 transmits the captured data into the host machine 2 through the radial pressure sensor 52;
fourthly, the host machine 2 performs operation analysis according to the data transmitted by the radial pressure sensor 52, judges whether the anti-yield strength of the repaired hub meets the standard, if not, the host machine 2 controls the laser scanner 59 to emit laser beams and controls the driving shaft 9 to rotate to mark abnormal positions, so that a worker can find out the abnormal parts of the hub and repair the hub again;
secondly, testing the swing error:
step one, a hub is placed on a flange plate 15 of a driving shaft 9, a central hole of the hub is ensured to be coaxial with the flange plate 15, a clamping instruction is input into a host machine 2, and the hub is clamped by a clamp assembly 6;
after the hub is fixed on the flange plate 15 and the diameter and width size values of the hub are input into the host machine 2, the driving motor 12 rotates to drive the driving shaft 9 to rotate, and the rotating driving shaft 9 drives the hub to synchronously rotate;
thirdly, the laser scanner 59 performs axial and radial run-out scanning measurement on the inner and outer rim ends of the hub under the driving of the third slider 54 and the fourth slider 57, and the scanned data is transmitted into the host 2;
and step four, the host machine 2 analyzes and calculates the data transmitted by the laser scanner 59 and then judges whether the axial and radial runout differences of the inner and outer rim ends of the wheel hub exceed the range, if the runout difference exceeds the range, the host machine 2 controls the laser scanner 59 to project laser beams and controls the driving shaft 9 to rotate to mark abnormal parts, so that maintenance personnel can find the abnormal parts of the wheel hub conveniently and repair the wheel hub again.
The foregoing description is further illustrative of the present invention and is not to be construed as limiting thereof, the scope of which is defined in the appended claims, and the invention may be modified in any manner without departing from the essential structure thereof.
Claims (5)
1. A testing device for vehicle wheels comprises a testing platform and a host, wherein the testing platform comprises a first platform surface and a second platform surface, and is characterized in that a dynamic loading assembly, a clamp assembly and a swing difference measuring assembly are further arranged on the first platform surface, the dynamic loading assembly is used for carrying out loading action of periodic variable load on the end part of an inner rim and an outer rim of a hub to be detected, the clamp assembly is used for clamping and fixing the hub to be detected and can realize the rotation action of the hub, and the swing difference measuring assembly is used for detecting the axial runout and the radial runout of the end part of the inner rim and the outer rim of the hub to be detected; the fixture assembly comprises an expansion mechanism, a driving shaft and a fixture, wherein the lower end of the driving shaft is connected with a gear box, the driving shaft is driven to rotate by a gear set in the gear box, the gear box is fixed on the upper part of a second table board, the gear set in the gear box is connected with a driving motor for transmission, the driving shaft penetrates through a first table board for installation, a bearing is installed in the middle of the driving shaft, the bearing is matched with the first table board for radially fixing the driving shaft, and a conductive sliding ring is also installed in the middle of the driving shaft; the drive shaft upper end is fixed with the ring flange, ring flange up end has first "T" groove and the second "T" groove of falling from the outside radial division of center, first "T" groove and the second "T" groove of falling are no less than four in the quantity that ring flange upper portion terminal surface distributes, first "T" groove and the alternate formula of second "T" groove of falling are arranged and are located the equipartition position of ring flange terminal surface, first "T" inslot sliding connection expansion mechanism that falls, the rectangle spout in the second "T" groove of falling is used for holding fixation nut, ring flange upper end top-down has opened first counter bore, the vertical spout that has opened of first counter bore inner wall quartering position, still be equipped with excitation coil in the first counter bore.
2. The testing device for the vehicle wheel as claimed in claim 1, wherein the expanding mechanism comprises a moving block and a conical block, one side of the moving block comprises a conical surface portion, a first guide block is fixed at the bottom of the moving block, the first guide block is slidably connected with a first inverted T-shaped groove, a groove is formed in the outer surface of the moving block, an annular tightening belt is installed in the groove, the conical block is located in a first counter bore of the flange, a circular groove is formed in the end face of the upper portion of the conical block, a threaded rod is fixed at the center of the circular groove, a first nut and a second nut are screwed on the threaded rod, a shaft rod is integrally formed at the lower portion of the conical block, second guide blocks are fixed at the quartering positions of the shaft rod, the second guide blocks are slidably matched with sliding grooves in second counter bores, and a second counter bore is formed in the end face of the lower portion of the shaft rod from bottom to top, the utility model discloses a clamping apparatus, including clamping apparatus, second counter bore, support and support arm, the clamping apparatus includes support and support arm, the support is cruciform structure, and cross intersection opens there is the through-hole, support and support arm are articulated fixed through the hinge, the other end spiro union of support arm has the conical head screw rod, conical head screw rod lower part is equipped with the awl seat, the through-hole that clamping apparatus passes through the support is connected with the threaded rod to fasten through first nut and second nut, still open the slot hole on the support arm, the conical head screw rod passes the slot hole and passes through lock nut and be fixed in on the support arm.
3. The testing device for the wheels of vehicles according to claim 1, wherein the dynamic loading assembly comprises a vertical moving part and a horizontal moving part, the vertical moving part comprises a first rack guide and a first slide block which are matched with each other, the first slide block is driven by a first motor, a second rack guide is horizontally connected to the first slide block, a second slide block is connected to the second rack guide, the second slide block is driven by a second motor, a loading part is connected to the lower part of the second slide block, the loading part comprises a horizontal pressing roller and a vertical pressing roller which are perpendicular to each other, and radial pressure sensors are mounted on the horizontal pressing roller and the vertical pressing roller.
4. The testing device for the vehicle wheel as claimed in claim 1, wherein the run-out measuring assembly comprises a third rack guide and a third slider which are matched with each other, the third slider is driven by a third motor, a fourth rack guide is connected to the third slider, a fourth slider is connected to the fourth rack guide, the fourth slider is driven by a fourth motor, and a laser scanner is connected to the fourth slider.
5. The testing device for the vehicle wheel according to claim 1, wherein the first table top is a fixed base of a first rack guide rail and a third rack guide rail, the second table top is fixed through a pair of cross beams on the detection table and used for supporting and fixing the gear box, and a rectangular window is formed in the first table top and used for the loading part to pass through when the loading part descends.
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CN118209261B (en) * | 2024-05-22 | 2024-07-16 | 玉田县永信机械制造有限公司 | A verifying attachment for foundry goods performance |
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