CN108760207B - Device for evaluating reliability of wheel structure and reliability evaluation method - Google Patents
Device for evaluating reliability of wheel structure and reliability evaluation method Download PDFInfo
- Publication number
- CN108760207B CN108760207B CN201810718384.9A CN201810718384A CN108760207B CN 108760207 B CN108760207 B CN 108760207B CN 201810718384 A CN201810718384 A CN 201810718384A CN 108760207 B CN108760207 B CN 108760207B
- Authority
- CN
- China
- Prior art keywords
- test
- wheel
- vibration
- sensor
- reliability
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a device for evaluating the structural reliability of a wheel, which comprises a vibration platform, a supporting mechanism for mounting the wheel, a sensor and a control unit, wherein the wheel is mounted on the supporting mechanism, the supporting mechanism is mounted on the vibration platform, the sensor is mounted on the wheel and the joint of the wheel and the supporting mechanism, and the movable platform and the sensor are both electrically connected with the control unit. The supporting mechanism comprises a bottom plate, a supporting base and a clamping shaft clamp, the supporting base is installed on the bottom plate, the bottom plate is installed on the vibration platform, and the clamping shaft clamp is connected to the supporting base. The one end of keeping away from the bottom plate on the supporting pedestal is equipped with recess I that is used for installing axletree on the wheel, is equipped with recess II that is used for the chucking axletree on the corresponding card axle anchor clamps, and the fixed chucking axletree of recess II and recess I cooperation from top to bottom. The invention discloses a method for evaluating the reliability of a wheel structure, which is used for carrying out a simulation long-life test, an impact test and a functional random vibration test in the longitudinal direction, the transverse direction and the vertical direction.
Description
Technical Field
The invention belongs to the technical field of rail transit vehicles, and particularly relates to a device and a method for evaluating reliability of a wheel structure.
Background
With the rapid development of rail transit, vibration and noise pollution generated during the operation of trains become prominent problems affecting urban environment. The rail transit noise mainly comprises wheel-rail noise, traction noise and aerodynamic noise, wherein the wheel-rail noise accounts for the main part, and in order to reduce the wheel-rail noise, the wheels must be provided with vibration and noise reduction measures, and the arrangement of the vibration and noise reduction measures on the wheels increasingly becomes a hard requirement.
The main types of low noise wheels currently include two main categories, namely, composite elastic wheels, and damped wheels with damping elements (e.g., damping rings, shielding or damping plates, dynamic vibration absorbers). Compared with the conventional integral wheel, the low-noise wheel is formed by laying or combining a metal wheel body and a damping component (or a rubber part), the reliability of the structure of the low-noise wheel is considered firstly in the wheel design stage or the physical service process, otherwise, in the vehicle running process, the damping component laid (such as bonding and embedding) on the low-noise wheel, a bolt playing a role in fixing and the like are loosened, dropped or broken due to repeated or instantaneous impact for many times caused by vibration caused by irregularity of a track, a track joint, foreign matters and the like, and the vibration and noise reduction effects of the wheel and the safety of the vehicle are directly influenced.
In order to verify the reliability of vibration and impact, the existing evaluation method only evaluates the damping element product, such as a damping ring, a dynamic vibration absorber and the like, and verifies whether looseness, falling or fracture occurs or not, however, after the damping element is laid on the wheel body, the vibration form, characteristics and the like of the damping element are changed, then the natural frequency of the damping element is completely different from the natural frequency of the low-noise finished wheel, and there may be vibration influence between the damping element and the wheel body again, so that a device and a method for evaluating the reliability of the low-noise finished wheel are required to be designed, and the reliability of the low-noise finished wheel is evaluated through vibration and impact.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a device for evaluating the reliability of a wheel structure and a method for evaluating the reliability of the wheel structure based on the device.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides an evaluation wheel structure reliability's device, includes vibration platform, the supporting mechanism, sensor and the control unit that are used for installing the wheel, the wheel is installed on the supporting mechanism, the supporting mechanism is installed on the vibration platform, the sensor is installed on the wheel with the junction of supporting mechanism, move the platform with the sensor all with the control unit electricity is connected.
Furthermore, the supporting mechanism comprises a bottom plate, a supporting base and a clamping shaft clamp, the supporting base is installed on the bottom plate, the bottom plate is installed on the vibration platform, and the clamping shaft clamp is connected to the supporting base.
Further, the wheel is installed on the axletree, keep away from on the supporting pedestal the one end of bottom plate is equipped with and is used for the installation the recess I of axletree, it is corresponding be equipped with on the card axle anchor clamps and be used for the chucking the recess II of axletree, recess II with the fixed chucking of cooperation from top to bottom of recess I the axletree.
Furthermore, the supporting base is provided with mounting holes I on the two sides of the groove I, the shaft clamping fixture is provided with mounting holes II on the two sides of the groove II, and the shaft clamping fixture penetrates through a fastener and is connected with the mounting holes I and II on the supporting base.
Furthermore, a key groove is formed in the shaft clamping fixture, a key seat is arranged on the axle, and the axle is connected to the shaft clamping fixture through the key, the key groove and the key seat.
Further, the sensors include a first sensor disposed on a surface of the wheel to monitor vibration characteristics of the wheel and a second sensor disposed on the axle clamp to monitor input excitation of the system.
Furthermore, the control unit comprises a vibration controller and a power amplifier for amplifying a driving signal generated by the vibration controller step by step, the driving signal amplified by the power amplifier drives the vibration platform to work, meanwhile, the second sensor feeds back a detected corresponding signal to the vibration controller, and compares and corrects the fed-back signal with a set driving spectrum for driving the vibration platform to work to obtain a new driving spectrum for driving the vibration platform to work.
Furthermore, the control unit also comprises a data processor, and the first sensor, the second sensor and the vibration controller are all connected with the data processor through leads.
The invention also relates to a method for evaluating the reliability of the wheel structure, which comprises the following steps based on the device for evaluating the reliability of the wheel structure:
step 1, firstly, according to the actual press-fitting process conditions of a wheel and an axle, the axle is pressed on the wheel, then the wheel is vertically fixed on a supporting mechanism, and then the supporting mechanism is arranged on a vibration platform;
step 2, after the wheel and the supporting mechanism are installed, arranging measuring points and control points according to technical requirements, arranging the control points at the connecting part of the axle and the supporting mechanism, arranging a second sensor at the control points, arranging the measuring points on the surface of the wheel, and arranging a first sensor at the measuring points; connecting the vibration controller, the power amplifier, the first sensor, the second sensor and the data processor, performing final inspection, and performing subsequent evaluation test after no error exists;
step 3, carrying out simulation long-life test, impact test and functional random vibration test in the longitudinal direction, the transverse direction and the vertical direction, wherein the test sequence is as follows: firstly carrying out a simulated long-life test in each direction, then carrying out an impact test, and finally carrying out a functional random vibration test, after completing three tests in each direction in the longitudinal direction, the transverse direction and the vertical direction, disassembling a connecting piece between the bottom plate and the vibration platform, and turning the bottom plate to change the next direction to continue the test;
and 4, after the simulation long-life test, the impact test and the functional random vibration test are completed, detecting and detecting the defects of the damping ring on the wheel, the mechanical structure of the wheel and the member playing a role in connection and fastening on the wheel, and evaluating the reliability of the wheel structure.
Further, the test conditions for simulating the long life test are as follows: controlling ASD value while performing vertical direction testIs 124.90 (m/s)2)2A root mean square value of 144m/s at/Hz2The test time was 5 hours, and the ASD value was controlled to be 100.20 (m/s) in the transverse direction test2)2A root mean square value of 129m/s at/Hz2The test time was 5 hours, and the ASD value was controlled to be 25.02 (m/s) in the longitudinal direction test2)2A root mean square value of 64.3m/s at/Hz2The testing time is 5 h; the test conditions of the impact test are as follows: when tests are carried out in the vertical direction, the transverse direction and the longitudinal direction, the impact waveform is a half sine wave, and the peak acceleration A is 1000m/s2The duration D is 6ms, and the impact times are respectively three times in a positive and negative way; after the vibration and impact test in each direction is finished, a functional random vibration test is carried out, wherein the test conditions of the functional random vibration test are as follows: the ASD value was controlled to be 8.74 (m/s) in the vertical direction of the test2)2A root mean square value of 38m/s at/Hz2The test time was 10min, and the ASD value was controlled to be 7.00 (m/s) in the transverse direction test2)2A root mean square value of 34m/s at/Hz2The test time was 10min, and the ASD value was controlled to be 1.75 (m/s) in the longitudinal direction test2)2A root mean square value of 17m/s at/Hz2The test time is 10 min.
The technical scheme adopted by the invention has the advantages that:
1. the two support bases are mainly used for supporting and fixing the axle, and the corresponding axle clamping clamps are vertically matched with the support bases to fix the axle so as to prevent the axle from loosening in the vibration and impact processes; the bottom plate mainly plays the whole axletree of settling and is connected two aspects effects with supporting pedestal and vibration platform, has done the experimental back of certain direction on vibration platform, only needs to dismantle the bottom plate and is connected with vibration platform, transfers the bottom plate and continues to do another direction experiment, need not to dismantle whole frock.
2. The invention simulates the actual vibration and impact working conditions of the wheel as much as possible under the laboratory condition, the wheel is not directly laid on the vibration platform, but is vertically fixed on the supporting mechanism for evaluation test after the axle is mounted according to the actual axle press mounting process condition, so that the test result is closer to the actual condition.
3. The invention can effectively evaluate the structural reliability of the low-noise wheel finished product through a series of vibration and impact tests, the test method has a basis, and the test means is easy to realize. The device required by the test has the advantages of simple design structure, small space, easy disassembly and transportation and high operability.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic structural diagram of the device for evaluating the structural reliability of the wheel according to the present invention.
Fig. 2 is a schematic structural diagram of the supporting mechanism of the present invention.
FIG. 3 is a schematic structural view of the shaft clamping fixture of the present invention.
The labels in the above figures are respectively: 1. a vibration platform; 2. a wheel; 21. an axle; 211. a key base; 22. a key; 23. a damping ring; 3. a support mechanism; 31. a base plate; 32. a support base; 321. a groove I; 322. a mounting hole I; 323. a reinforcing plate; 324. a first plate; 325. a second plate; 33. a shaft clamping fixture; 331. a groove II; 332. mounting holes II; 333. a keyway; 4. a sensor; 41. a first sensor; 42. a second sensor; 5. a control unit; 51. a vibration control instrument; 52. a power amplifier; 53. a data processor.
Detailed Description
In the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, as used herein, are used in the orientation or positional relationship indicated in the drawings to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting.
As shown in fig. 1, 2 and 3, the device for evaluating the structural reliability of the wheel comprises a vibration platform 1, a supporting mechanism 3 for mounting the wheel 2, a sensor 4 and a control unit 5, wherein the wheel 2 is mounted on the supporting mechanism 3, the supporting mechanism 3 is mounted on the vibration platform 1, the sensor 4 is mounted on the wheel 2 and the joint of the wheel 2 and the supporting mechanism 3, and the movable platform 1 and the sensor 4 are both electrically connected with the control unit 5. The supporting mechanism 3 comprises a bottom plate 31, a supporting base 32 and a clamping shaft clamp 33, wherein the supporting base 32 is installed on the bottom plate 31, the bottom plate 31 is installed on the vibration platform 1, and the clamping shaft clamp 33 is connected on the supporting base 32.
The wheel 2 is installed on the axletree 21, and the one end of keeping away from bottom plate 31 on the support base 32 is equipped with I321 of recess that is used for installing axletree 21, is equipped with II 331 of recess that is used for chucking axletree 21 on the corresponding card axle anchor clamps 33, and II 331 of recess and I321 cooperate the fixed axletree 21 of chucking from top to bottom. The supporting base 32 is provided with mounting holes I322 along two sides of the groove I321, the shaft clamping clamp 33 is provided with mounting holes II 332 along two sides of the groove II 331, and the shaft clamping clamp 33 penetrates through the mounting holes I322 and the mounting holes II 332 through fasteners to be connected to the supporting base 32. The two supporting bases 32 mainly play a role in supporting and fixing the axle 21, and the corresponding clamping shaft 33 clamps are matched with the supporting bases 32 up and down to fix the clamping axle 21, so that the axle 21 is prevented from loosening in the vibration and impact processes; the bottom plate 31 mainly plays a role in integrally arranging the axle 21, the supporting base 32 and the vibration platform 1 to be connected, after a certain direction test is performed on the vibration platform 1, only the bottom plate 31 needs to be detached and connected with the vibration platform 1, the turning bottom plate 31 continues to perform another direction test, and the whole tool does not need to be detached.
The clamping shaft clamp 33 is provided with a key groove 333, the axle 21 is provided with a key seat 211, and the axle 21 is connected with the clamping shaft clamp 33 through a key 22, the key groove 333 and the key seat 211; preferably, the key 22 is a woodruff key. Support base 32 is an "L" shaped structure, support base 32 includes first plate 324 and second plate 325, second plate 325 is vertically connected to first plate 324, I321 is set on top of second plate 325, first plate 324 is installed on bottom plate 31 through fasteners, support base 32 is provided with reinforcing plate 323, one side of reinforcing plate 323 is connected to first plate 324, and the other side of reinforcing plate 323 is connected to second plate 325.
The above-mentioned sensors 4 comprise a first sensor 41 and a second sensor 42, the first sensor 41 being arranged on the surface of the wheel 2 to monitor the vibration characteristics of the wheel 2, and the second sensor 42 being arranged on the axle clamp 33 to monitor the input excitation of the system.
The control unit 5 comprises a vibration controller 51, a power amplifier 52 for amplifying the driving signal generated by the vibration controller 51 step by step, and a data processor 53, wherein the driving signal amplified by the power amplifier 52 drives the vibration platform 1 to work, meanwhile, the second sensor 42 feeds back the detected corresponding signal to the vibration controller 51, and compares and corrects the fed-back signal with the set driving spectrum for driving the vibration platform 1 to work to obtain a new driving spectrum for driving the vibration platform 1 to work. The first sensor 41, the second sensor 42 and the vibration controller 51 are connected through a wire data processor 53.
The driving signal generated by the vibration controller 51 is input into the power amplifier 52 which amplifies the driving signal step by step, the driving signal amplified by the power amplifier 52 drives the vibration platform 1 to work, meanwhile, the second sensor 42 feeds the detected corresponding signal back to the vibration controller 51, the fed-back signal is compared with the set driving frequency for driving the vibration platform 1 to work and is corrected, a new driving spectrum is obtained to drive the vibration platform 1 to work, the operation is repeated, the driving spectrum reaches and meets the precision requirement of test control, a control point is selected at a connecting screw of a clamping shaft clamp and a test piece, the sensor is rigidly connected with a fixed point, the vibration of the control point is not lower than the lower control limit, and the control mode is average control. Preferably, the sensor is adhered by quick-drying glue or epoxy resin glue. In order to avoid signal loss caused by loosening of the sensor and the connecting lead during the test, the vibration system is self-checked before the test to check the integrity of the connection of the measuring system consisting of the sensor, the vibration controller, the power amplifier and the data processor.
The device for evaluating the reliability of the wheel structure meets the requirement of test rigidity through simulation analysis and calculation before manufacturing and implementation; and the device has simple design structure, small space, easy disassembly and transportation and high operability.
The invention simulates the actual vibration and impact working conditions of the wheel as much as possible under the laboratory conditions, the wheel 2 is not directly laid on the vibration platform 1, but the wheel 2 is vertically fixed on the supporting mechanism 3 for evaluation test after the axle is mounted according to the actual axle press mounting process conditions.
The method for evaluating the reliability of the wheel structure based on the device for evaluating the reliability of the wheel structure comprises the following steps:
step 1, firstly, according to the actual press-fitting process conditions of a wheel 2 and an axle 21, the axle 21 is pressed on the wheel 2, then the wheel 2 is vertically fixed on a supporting mechanism 3, and then the supporting mechanism 3 is arranged on a vibration platform 1; after the supporting base 32 is fixed on the bottom plate 31, the pressed wheel 2 is arranged on the supporting base 32 and matched with the shaft clamping fixture 33 to fixedly clamp the axle 21, after the wheel 2 and the tool are integrally arranged on the high-power vibration platform 1, and the damping ring 23 cannot be clamped on the wheel body when being installed.
Step 2, after the wheel 2 and the supporting mechanism 3 are installed, measuring points and control points are arranged according to technical requirements, the control points are arranged at the connection position of the axle 21 and the supporting mechanism 3, a second sensor 42 is arranged at the control points and used for monitoring input excitation of the system, the measuring points are arranged on the surface of the wheel 2, and a first sensor 41 is arranged at the measuring points and used for monitoring the vibration characteristics of the wheel 2; the vibration controller 51, the power amplifier 52, the first sensor 41, the second sensor 42 and the data processor 53 are connected, and final check is carried out, and a subsequent evaluation test is carried out after no error is found.
Step 3, carrying out simulation long-life test, impact test and functional random vibration test in the longitudinal direction, the transverse direction and the vertical direction, wherein the test sequence is as follows: and after three tests are completed in each direction in the longitudinal direction, the transverse direction and the vertical direction, a connecting piece between the bottom plate 31 and the vibration platform 1 is disassembled, and the bottom plate 31 is turned to change the next direction to continue the tests until the tests in the three directions are completed.
The test method for simulating the long life test is carried out according to three types of strips in IEC61373-2010 clause 9The procedure was carried out, the weight m of the wheel 2 was 325kg, and f was determined2200 Hz; the test conditions for simulating the long life test are as follows: the ASD value was controlled to 124.90 (m/s) in the vertical direction of the test2)2A root mean square value of 144m/s at/Hz2The test time was 5 hours, and the ASD value was controlled to be 100.20 (m/s) in the transverse direction test2)2A root mean square value of 129m/s at/Hz2The test time was 5 hours, and the ASD value was controlled to be 25.02 (m/s) in the longitudinal direction test2)2A root mean square value of 64.3m/s at/Hz2The test time is 5 h.
The test method of the impact test is carried out according to three types of conditions in IEC61373-2010 clause 10, the test is applied to the whole set of wheels 2, and the test conditions of the impact test are as follows: when tests are carried out in the vertical direction, the transverse direction and the longitudinal direction, the impact waveform is a half sine wave, and the peak acceleration A is 1000m/s2The duration D is 6ms, and the impact times are respectively three times in a positive and negative way; after the vibration and impact test in each direction is finished, a functional random vibration test is carried out.
The testing method of the functional random vibration test is carried out according to three conditions in IEC61373-2010 item 8, the weight m of the wheel is 325kg, and f is determined2200 Hz; the test conditions of the functional random vibration test are as follows: the ASD value was controlled to be 8.74 (m/s) in the vertical direction of the test2)2A root mean square value of 38m/s at/Hz2The test time was 10min, and the ASD value was controlled to be 7.00 (m/s) in the transverse direction test2)2A root mean square value of 34m/s at/Hz2The test time was 10min, and the ASD value was controlled to be 1.75 (m/s) in the longitudinal direction test2)2A root mean square value of 17m/s at/Hz2The test time is 10min
And 4, after the simulation long-life test, the impact test and the functional random vibration test are completed, detecting and detecting the damping ring 23 on the wheel 2, the mechanical structure of the wheel 2 and the component playing a role in connection and fastening on the wheel 2, and evaluating the reliability of the wheel structure. The specific evaluation mode is as follows: after all tests are completed, the reliability test of the present invention can be considered to pass if all of the following requirements are met: the overall appearance and the mechanical structure of the low-noise wheel are not changed and have no cracks; the damping component can not be misplaced, loosened and damaged; and thirdly, components connected and fastened on the wheels cannot be loosened.
The simulated long life test is used for verifying the integrity of the mechanical structure of the low-noise wheel under the simulated environmental condition; the impact test is used for simulating the impact resistance of the low-noise wheel in the running process; the functional random vibration test is used to verify the integrity of the low noise wheel under the likely environmental conditions of the vehicle.
The invention can effectively evaluate the structural reliability of the low-noise wheel finished product through a series of vibration and impact tests, the test method has a basis, and the test means is easy to realize. The device required by the test has the advantages of simple design structure, small space, easy disassembly and transportation and high operability.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the technical solution of the invention or to apply the concept and technical solution of the invention directly to other occasions without modification.
Claims (8)
1. An apparatus for evaluating reliability of a wheel structure, characterized in that: the device comprises a vibration platform (1), a supporting mechanism (3) for mounting a wheel (2), a sensor (4) and a control unit (5), wherein the wheel (2) is mounted on the supporting mechanism (3), the supporting mechanism (3) is mounted on the vibration platform (1), the sensor (4) is mounted on the wheel (2) and at the joint of the wheel (2) and the supporting mechanism (3), and the vibration platform (1) and the sensor (4) are both electrically connected with the control unit (5); the supporting mechanism (3) comprises a bottom plate (31), a supporting base (32) and a shaft clamping clamp (33), the supporting base (32) is installed on the bottom plate (31), the bottom plate (31) is installed on the vibration platform (1), and the shaft clamping clamp (33) is connected to the supporting base (32); the wheels (2), the axles (21) and the supporting base (32) are integrally installed on the vibration platform (1) through a bottom plate (31); wheel (2) are installed on axletree (21), keep away from on supporting pedestal (32) the one end of bottom plate (31) is equipped with and is used for the installation recess I (321) of axletree (21), and is corresponding be equipped with on card axle anchor clamps (33) and be used for the chucking recess II (331) of axletree (21), recess II (331) with the chucking is fixed in recess I (321) cooperation from top to bottom axle (21).
2. An apparatus for evaluating the reliability of a wheel structure according to claim 1, wherein: support base (32) are gone up along the both sides of recess I (321) are equipped with mounting hole I (322), card axle anchor clamps (33) are gone up along the both sides of recess II (331) are equipped with mounting hole II (332), card axle anchor clamps (33) pass through the fastener mounting hole I (322) and mounting hole II (332) are connected on support base (32).
3. An apparatus for evaluating reliability of a wheel structure according to claim 1 or 2, wherein: the clamp shaft clamp is characterized in that a key groove (333) is formed in the clamp shaft clamp (33), a key seat (211) is formed in the axle (21), and the axle (21) is connected to the clamp shaft clamp (33) through a key (22), the key groove (333) and the key seat (211).
4. An apparatus for evaluating the reliability of a wheel structure according to claim 3, wherein: the sensor (4) comprises a first sensor (41) and a second sensor (42), the first sensor (41) is arranged on the surface of the wheel (2) to monitor the vibration characteristic of the wheel (2), and the second sensor (42) is arranged on the shaft clamping fixture (33) to monitor the input excitation of the system.
5. An apparatus for evaluating the reliability of a wheel structure according to claim 4, wherein: the control unit (5) comprises a vibration controller (51) and a power amplifier (52) for amplifying a driving signal generated by the vibration controller (51) step by step, the driving signal amplified by the power amplifier (52) drives the vibration platform (1) to work, meanwhile, the second sensor (42) feeds back a detected corresponding signal to the vibration controller (51), and the fed-back signal is compared with a set driving spectrum for driving the vibration platform (1) to work and is corrected to obtain a new driving spectrum for driving the vibration platform (1) to work.
6. An apparatus for evaluating the reliability of a wheel structure according to claim 5, wherein: the control unit (5) further comprises a data processor (53), and the first sensor (41), the second sensor (42) and the vibration controller (51) are connected through leads and the data processor (53).
7. A method of evaluating the reliability of a wheel structure, characterized by: the method for evaluating the reliability of a wheel structure based on the apparatus for evaluating the reliability of a wheel structure according to any one of claims 1 to 6 comprises the steps of:
step 1, firstly, according to the actual press-fitting process conditions of a wheel (2) and an axle (21), the axle (21) is pressed on the wheel (2), then the wheel (2) is vertically fixed on a supporting mechanism (3), and then the supporting mechanism (3) is arranged on a vibration platform (1);
step 2, after the wheel (2) and the supporting mechanism (3) are installed, measuring points and control points are arranged according to technical requirements, the control points are arranged at the connecting position of the axle (21) and the supporting mechanism (3), a second sensor (42) is arranged at the control points, the measuring points are arranged on the surface of the wheel (2), and a first sensor (41) is arranged at the measuring points; the vibration control instrument (51), the power amplifier (52), the first sensor (41), the second sensor (42) and the data processor (53) are connected, final inspection is carried out, and a subsequent evaluation test is carried out after no error exists;
step 3, carrying out simulation long-life test, impact test and functional random vibration test in the longitudinal direction, the transverse direction and the vertical direction, wherein the test sequence is as follows: firstly carrying out a simulated long-life test in each direction, then carrying out an impact test, and finally carrying out a functional random vibration test, after completing three tests in each direction in the longitudinal direction, the transverse direction and the vertical direction, disassembling a connecting piece between the bottom plate (31) and the vibration platform (1), and turning the bottom plate (31) to change the next direction for continuing the test;
and 4, after the simulated long-life test, the impact test and the functional random vibration test are completed, detecting and detecting the damping ring (23) on the wheel (2), the mechanical structure of the wheel (2) and the component playing a role in connection and fastening on the wheel (2), and evaluating the reliability of the wheel structure.
8. A method of evaluating the reliability of a wheel structure according to claim 7, wherein: the test conditions of the simulated long-life test are as follows: the ASD value was controlled to 124.90 (m/s) in the vertical direction of the test2)2A root mean square value of 144m/s at/Hz2The test time was 5 hours, and the ASD value was controlled to be 100.20 (m/s) in the transverse direction test2)2A root mean square value of 129m/s at/Hz2The test time was 5 hours, and the ASD value was controlled to be 25.02 (m/s) in the longitudinal direction test2)2A root mean square value of 64.3m/s at/Hz2The testing time is 5 h;
the test conditions of the impact test are as follows: when tests are carried out in the vertical direction, the transverse direction and the longitudinal direction, the impact waveform is a half sine wave, and the peak acceleration A is 1000m/s2The duration D is 6ms, and the impact times are respectively three times in a positive and negative way;
after the vibration and impact test in each direction is finished, a functional random vibration test is carried out, wherein the test conditions of the functional random vibration test are as follows: the ASD value was controlled to be 8.74 (m/s) in the vertical direction of the test2)2A root mean square value of 38m/s at/Hz2The test time was 10min, and the ASD value was controlled to be 7.00 (m/s) in the transverse direction test2)2A root mean square value of 34m/s at/Hz2The test time was 10min, and the ASD value was controlled to be 1.75 (m/s) in the longitudinal direction test2)2A root mean square value of 17m/s at/Hz2The test time is 10 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810718384.9A CN108760207B (en) | 2018-07-03 | 2018-07-03 | Device for evaluating reliability of wheel structure and reliability evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810718384.9A CN108760207B (en) | 2018-07-03 | 2018-07-03 | Device for evaluating reliability of wheel structure and reliability evaluation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108760207A CN108760207A (en) | 2018-11-06 |
| CN108760207B true CN108760207B (en) | 2021-04-02 |
Family
ID=63976004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810718384.9A Active CN108760207B (en) | 2018-07-03 | 2018-07-03 | Device for evaluating reliability of wheel structure and reliability evaluation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108760207B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697378B (en) * | 2020-12-29 | 2022-10-04 | 东风汽车集团有限公司 | Virtual rack model for impact test of aluminum alloy rim |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201903437U (en) * | 2010-12-20 | 2011-07-20 | 柳州五菱汽车有限责任公司 | Overall vehicle vibration testing device and overall vehicle vibration testing platform with same |
| CN202372869U (en) * | 2011-10-31 | 2012-08-08 | 北京强度环境研究所 | Multi-dimensional random vibration control system |
| CN102809474A (en) * | 2012-08-17 | 2012-12-05 | 柳州五菱汽车有限责任公司 | Whole-vehicle vibration test equipment |
| CN103575493A (en) * | 2013-11-04 | 2014-02-12 | 株洲南车时代电气股份有限公司 | Device and method for appraising vibration test clamp |
| CN106289510A (en) * | 2016-10-11 | 2017-01-04 | 常州大学 | A kind of Wheel Rail Contact state is detrained unsteadiness of wheels acoustic radiation characteristic test method and device |
| CN106353058A (en) * | 2016-08-25 | 2017-01-25 | 浙江理工大学 | Wheel vibration test stand for high-speed EMU |
| CN206074208U (en) * | 2016-09-06 | 2017-04-05 | 吉林大学 | Full degree of freedom orbital simulator |
| CN206146613U (en) * | 2016-08-25 | 2017-05-03 | 浙江理工大学 | High -speed EMUs wheel vibration test platform |
| CN107525642A (en) * | 2017-07-28 | 2017-12-29 | 中车南京浦镇车辆有限公司 | Permanent magnet direct driving motor vibration impact experiment platform |
-
2018
- 2018-07-03 CN CN201810718384.9A patent/CN108760207B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201903437U (en) * | 2010-12-20 | 2011-07-20 | 柳州五菱汽车有限责任公司 | Overall vehicle vibration testing device and overall vehicle vibration testing platform with same |
| CN202372869U (en) * | 2011-10-31 | 2012-08-08 | 北京强度环境研究所 | Multi-dimensional random vibration control system |
| CN102809474A (en) * | 2012-08-17 | 2012-12-05 | 柳州五菱汽车有限责任公司 | Whole-vehicle vibration test equipment |
| CN103575493A (en) * | 2013-11-04 | 2014-02-12 | 株洲南车时代电气股份有限公司 | Device and method for appraising vibration test clamp |
| CN106353058A (en) * | 2016-08-25 | 2017-01-25 | 浙江理工大学 | Wheel vibration test stand for high-speed EMU |
| CN206146613U (en) * | 2016-08-25 | 2017-05-03 | 浙江理工大学 | High -speed EMUs wheel vibration test platform |
| CN206074208U (en) * | 2016-09-06 | 2017-04-05 | 吉林大学 | Full degree of freedom orbital simulator |
| CN106289510A (en) * | 2016-10-11 | 2017-01-04 | 常州大学 | A kind of Wheel Rail Contact state is detrained unsteadiness of wheels acoustic radiation characteristic test method and device |
| CN107525642A (en) * | 2017-07-28 | 2017-12-29 | 中车南京浦镇车辆有限公司 | Permanent magnet direct driving motor vibration impact experiment platform |
Non-Patent Citations (1)
| Title |
|---|
| Railway applications-Rolling stock equipment -Shock and vibration tests(IEC 61373:2010);BRITISH STANDARD;《BRITISH STANDARD》;20100930;第13-22页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108760207A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103134692B (en) | Simulation test board line frame for electric car power-driven system | |
| CN103278340B (en) | A kind of dynamic assembly suspension vibration and noise test system and method for testing thereof | |
| CN103196754B (en) | Bending test device for semi-floating drive axle, and test method of same | |
| CN101441135B (en) | Test device and test method of automobile steering knuckle | |
| CN108871796B (en) | Axle housing assembly fatigue endurance testing method and device for simulating road | |
| CN108692924B (en) | Torsion fatigue test device for automobile leaf spring | |
| CN110261129B (en) | Vehicle stay-supported displacement measuring device | |
| CN207937174U (en) | A kind of multi-angle tire dynamic rate experimental rig | |
| CN101368882B (en) | Car body dynamic intensity analysis method | |
| KR102603186B1 (en) | Universal suspension and test equipment for automobile chassis simulation road test | |
| CN108760207B (en) | Device for evaluating reliability of wheel structure and reliability evaluation method | |
| CN112284771A (en) | Fatigue test system and method for vehicle suspension system | |
| CN203519327U (en) | Endurance test device for automobile steering knuckle | |
| CN114018598A (en) | Hub electric wheel test bench and test method | |
| CN103913315A (en) | Performance testing device, performance testing method and optimization method of automotive suspension system | |
| CN203310507U (en) | Power assembly suspension vibration noise testing system | |
| CN202693330U (en) | Special fixture for vehicle clutch and accelerator pedal performance test bench rack | |
| CN106323738B (en) | Fastener fatigue test loading frame suitable for various loading angles | |
| CN104191389A (en) | Adjustable fixing device for constraint modal testing of driving half axles | |
| KR200497631Y1 (en) | Tool for automobile steering knuckle bench test | |
| KR102628906B1 (en) | Loading system and test equipment for automobile chassis simulation road test | |
| CN211978336U (en) | Bench test tool for automobile front steering knuckle | |
| CN104764606A (en) | Axle hub assembly performance test equipment | |
| CN115931615A (en) | Hub bearing unit three-axis fretting wear testing machine and testing method | |
| CN204630730U (en) | A kind of axle hub assembly performance testing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |