CN113432871A - Motor train unit gearbox bearing clearance vibration endurance test stand and test method - Google Patents
Motor train unit gearbox bearing clearance vibration endurance test stand and test method Download PDFInfo
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- CN113432871A CN113432871A CN202110851517.1A CN202110851517A CN113432871A CN 113432871 A CN113432871 A CN 113432871A CN 202110851517 A CN202110851517 A CN 202110851517A CN 113432871 A CN113432871 A CN 113432871A
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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
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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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
- G01M13/00—Testing of machine parts
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- G01M13/045—Acoustic or vibration analysis
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Abstract
本发明公开了一种动车组齿轮箱轴承游隙振动耐久试验台及试验方法，涉及动车组齿轮箱试验技术领域，包括负载电机、驱动电机、陪试齿轮箱系统和横向激励振动平台，负载电机能够驱动陪试齿轮箱系统转动，驱动电机用于驱动主试齿轮箱系统转动，陪试齿轮箱系统用于与主试齿轮箱系统传动连接，横向激励振动平台上用于固定主试齿轮箱系统和陪试齿轮箱系统，且横向激励振动平台能够带动主试齿轮箱系统和陪试齿轮箱系统沿主试齿轮箱系统的轴向往复移动。该动车组齿轮箱轴承游隙振动耐久试验台及试验方法既能够模拟行驶时的阻力，又能够模拟行驶时的侧向风。
The invention discloses a bearing clearance vibration durability test bench and a test method for an EMU gearbox, and relates to the technical field of EMU gearbox testing, including a load motor, a drive motor, a test gear box system, a lateral excitation vibration platform, and a load motor. It can drive the auxiliary test gearbox system to rotate, the drive motor is used to drive the main test gearbox system to rotate, the auxiliary test gearbox system is used for driving connection with the main test gearbox system, and the lateral excitation vibration platform is used to fix the main test gearbox system. And the auxiliary test gearbox system, and the lateral excitation vibration platform can drive the main test gearbox system and the auxiliary test gearbox system to reciprocate along the axial direction of the main test gearbox system. The EMU gearbox bearing clearance vibration durability test bench and the test method can not only simulate the resistance during driving, but also simulate the lateral wind during driving.
Description
Technical Field
The invention relates to the technical field of motor train unit gearbox tests, in particular to a motor train unit gearbox bearing clearance vibration endurance test bed and a test method.
Background
At present, the type test contents adopted by the gearbox of the domestic motor train unit generally conform to the standards of 'driving gearbox for TB/T3134 motor train unit' and 'temporary technical condition for gearbox composition of TJ/CL 277 motor train unit', and the test contents relate to an environment simulation test, a loading test and an overspeed test. However, the condition of the bearing of the gearbox is required to be detected in the standard, the key index reflecting the condition of the bearing is the size of the clearance value, the bearing is damaged early due to overlarge or undersize clearance, and the driving safety of the motor train unit is seriously influenced. At present, the endurance test equipment specially aiming at the bearing clearance of the gearbox of the motor train unit is rarely introduced in China, and the endurance test equipment capable of carrying out deterioration test on the bearing is not provided, so that the performance of the gearbox of various motor train units cannot be fully verified.
Disclosure of Invention
The invention aims to provide a motor train unit gearbox bearing clearance vibration endurance test bed and a test method, which are used for solving the problems in the prior art and can simulate resistance during running and lateral wind during running.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a motor train unit gearbox bearing clearance vibration endurance test bed which comprises a load motor, a driving motor, an auxiliary test gearbox system and a transverse excitation vibration platform, wherein the load motor can drive the auxiliary test gearbox system to rotate, the driving motor is used for driving a main test gearbox system to rotate, the auxiliary test gearbox system is used for being in transmission connection with the main test gearbox system, the transverse excitation vibration platform is used for fixing the main test gearbox system and the auxiliary test gearbox system, and the transverse excitation vibration platform can drive the main test gearbox system and the auxiliary test gearbox system to reciprocate along the axial direction of the main test gearbox system.
Preferably, the gearbox system further comprises a torque transmission element, two ends of the torque transmission element are respectively fixed with the main test gearbox system and the auxiliary test gearbox system, and the torque transmission element is used for transmitting torque between the main test gearbox system and the auxiliary test gearbox system.
Preferably, the transverse excitation vibration platform further comprises a main axle, a main torque force transmission assembly, a first main axle box seat and a second main axle box seat, wherein two ends of the main axle are respectively and rotatably mounted in the first main axle box seat and the second main axle box seat, one end of the main torque force transmission assembly is fixedly connected with an output shaft of the driving motor, the other end of the main torque force transmission assembly is fixedly connected with one end of the main axle, the main axle is used for penetrating through the main test gear set, the first main axle box seat is fixed on the transverse excitation vibration platform, the main torque force transmission assembly is supported on the transverse excitation vibration platform through the second main axle box seat, and one end of the torque transmission element is used for being fixedly connected with the main test gear set;
accompany examination gear box system including accompany the axletree, accompany the moment of torsion and pass the power assembly, accompany the examination gear train, first accompany the axletree seat and the second accompany the axletree seat, accompany the both ends of axletree and rotate respectively and install first accompany the axletree seat with the second accompany in the axletree seat, accompany the moment of torsion and pass the one end of power assembly with the output shaft fixed connection of load motor, the other end with accompany the one end fixed connection of axletree, accompany the axletree with accompany the gear wheel coaxial fixation of examination gear train, first accompany the axletree seat and fix on the horizontal excitation vibration platform, accompany the moment of torsion and pass the power assembly through the second accompany the axletree seat support in on the horizontal excitation vibration platform, accompany the examination gear train with keep away from on the moment of torsion transmission component the one end of examination gear train is fixed.
Preferably, the main torque force transmission assembly comprises a main torque sensor, a main outer flange coupler, a main drum-shaped tooth coupler, a main inner flange coupler, a main bearing seat flange coupler and a main expansion sleeve coupler, one end of the main torque sensor is connected with the driving motor, the other end of the main torque sensor is connected with the main outer flange coupler, the main torque sensor is used for detecting the torque received by the main shaft, the output shaft of the driving motor, the main torque sensor, the main outer flange coupler, the main drum-shaped tooth coupler, the main inner flange coupler and the main bearing seat flange coupler are fixedly connected in sequence, the main bearing seat flange coupler extends into the second main shaft box seat, a main double-row ball bearing is fixed in the second main shaft box seat, and the main double-row ball bearing is sleeved on the periphery of the main bearing seat flange coupler, the main double-row ball bearings are fixed in the second main axle box seat, one end of the main inner side flange coupler can penetrate through the main double-row ball bearings and is fixedly connected with the main expansion sleeve coupler, and the other end of the main expansion sleeve coupler is fixedly sleeved at one end of the main axle;
the accompanying torque force transmission assembly comprises the accompanying torque sensor, an accompanying outer side flange coupler, an accompanying drum type gear coupler, an accompanying inner side flange coupler, an accompanying bearing seat flange coupler and an accompanying expansion sleeve coupler, wherein one end of the accompanying torque sensor is connected with the load motor, the other end of the accompanying torque sensor is connected with the accompanying outer side flange coupler, the accompanying torque sensor is used for detecting the torque borne by the accompanying axle, the output shaft of the load motor, the accompanying torque sensor, the accompanying outer side flange coupler, the accompanying drum type gear coupler, the accompanying inner side flange coupler and the accompanying bearing seat flange coupler are fixedly connected in sequence, the accompanying bearing seat flange coupler stretches into the second accompanying axle box seat, an accompanying ball bearing is fixed in the second accompanying axle box seat, and the accompanying double-row ball bearing is sleeved on the periphery of the accompanying bearing seat flange coupler, and accompany the biserial ball bearing and be fixed in the second accompanies the axlebox seat, accompany the one end of inboard flange shaft coupling and can pass accompany in the biserial ball bearing and with accompany the bloated cover shaft coupling fixed connection, accompany the fixed cover of the other end of bloated cover shaft coupling and locate accompany the one end of axletree.
Preferably, the vibration generator further comprises two counter-force supporting seats, wherein the two counter-force supporting seats are fixed on the transverse excitation vibration platform, are respectively and rotatably connected with two ends of the torque transmission element, and are used for supporting the torque transmission element.
Preferably, still be fixed with the main support and accompany the support on the horizontal excitation vibration platform, the main support is used for supporting main examination gear train and be used for with main examination gear train rotates and is connected, accompany the support and be located accompany examination gear train lower extreme, and accompany the support upper end with accompany examination gear train rotation connection and be used for supporting accompany examination gear train.
Preferably, the transverse excitation vibration platform further comprises a base and a driving unit, wherein at least one guide rail is fixed on the base, at least one sliding block is arranged on the lower end face of the transverse excitation vibration platform, one guide rail corresponds to at least one sliding block, the sliding block can slide in the guide rail in a reciprocating manner, the driving unit is fixed at the end part of the transverse excitation vibration platform and is used for driving the transverse excitation vibration platform to move in a reciprocating manner along the axial direction of the main test gear box system and enabling the sliding block to slide in the guide rail in a reciprocating manner.
Preferably, the transverse excitation vibration platform is rectangular, the number of the driving units is four, and two driving units are respectively arranged at two opposite ends of the transverse excitation vibration platform; the guide rail with the slider is four, and four the slider is fixed in respectively four bights of horizontal excitation vibration platform, the guide rail with the slider position corresponds.
Preferably, the driving unit is a hydraulic cylinder unit, one end of the driving unit is fixed on the base, and the other end of the driving unit is rotatably connected with the transverse excitation vibration platform.
The invention also provides a motor train unit gearbox bearing clearance vibration endurance test method, which uses any one of the technical schemes to realize the motor train unit gearbox bearing clearance vibration endurance test bed, and comprises the following steps:
s1: starting a driving motor, enabling a load motor not to be electrified, enabling the driving motor to drive a main test gear box system to rotate, enabling the main test gear box system to drive an auxiliary test gear box system to rotate, and enabling the auxiliary test gear box system to drive the load motor to rotate;
s2: keeping the driving motor started, starting the load motor, enabling the driving motor to drive the main test gearbox system to rotate, enabling the load motor to drive the auxiliary test gearbox system to rotate, and changing the output torque of the load motor so as to simulate resistance with different sizes in the driving process; and driving the main test gear box system and the auxiliary test gear box system to reciprocate by the transverse excitation vibration platform so as to simulate transverse excitation vibration.
Compared with the prior art, the invention has the following technical effects:
according to the motor train unit gearbox bearing clearance vibration endurance test bed provided by the invention, the driving motor can drive the main test gearbox system to rotate, the load motor can drive the auxiliary test gearbox system to rotate, the driving motor and the load motor respectively drive the main test gearbox system and the auxiliary test gearbox system to reversely rotate, the main test gearbox system is in transmission connection with the auxiliary test gearbox system so as to realize torque transmission, the auxiliary test gearbox system is used for providing resistance, the load motor outputs different torques according to test requirements so as to simulate running resistance under different road conditions, the simulation authenticity is high, the accuracy of test results is further improved, the main test gearbox system and the auxiliary test gearbox system are both fixed on the transverse excitation vibration platform, and the transverse excitation vibration platform can drive the main test gearbox system and the auxiliary test gearbox system to reciprocate along the axial direction of the main test gearbox system, the influence of crosswind in the driving process is simulated by providing transverse excitation, the authenticity of simulation is further improved, the endurance test is carried out on the basis, and the accuracy of the test result can be improved.
According to the method for testing the vibration durability of the motor train unit gearbox bearing clearance, the driving motor is started, the load motor is not electrified, the driving motor drives the main test gearbox system to rotate, the main test gearbox system drives the auxiliary test gearbox system to rotate, and the auxiliary test gearbox system drives the load motor to rotate, so that no-load tests are performed, the working state of each component is verified, and the test is ensured to be developed on the premise that each component can normally work; keeping the driving motor started, starting the load motor to enable the driving motor to drive the main test gear box system to rotate, driving the auxiliary test gear box system to rotate by the load motor, and changing the output torque of the load motor to simulate different resistance forces in the driving process, so that the situation in the driving process can be truly restored, and the accuracy of the test result is improved; the transverse excitation vibration platform drives the main test gear box system and the accompanying test gear box system to move in a reciprocating mode so as to simulate transverse excitation vibration, simulate crosswind received in the driving process and ensure that all factors in driving can be simulated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a motor train unit gearbox bearing play vibration endurance test stand according to an embodiment;
FIG. 2 is a schematic structural diagram of a motor train unit gearbox bearing play vibration endurance test stand provided by the first embodiment when a driving motor and a load motor are not installed;
FIG. 3 is a schematic view of a main test gearbox system and a torque transmission element in a motor train unit gearbox bearing play vibration endurance test stand according to an embodiment I;
FIG. 4 is a schematic structural diagram of a main torque force transmission assembly in a clearance vibration endurance test bed of a gearbox bearing of a motor train unit according to an embodiment;
FIG. 5 is a schematic structural diagram of a transverse excitation vibration platform in a gearbox bearing play vibration endurance test bed of a motor train unit provided by the first embodiment;
FIG. 6 is a top view of the transversely excited vibration platform of FIG. 5 with the platform removed;
FIG. 7 is a schematic structural diagram of a driving unit in a gearbox bearing play vibration endurance test bed of a motor train unit according to an embodiment;
FIG. 8 is a schematic view of a guide rail and a slide block in a clearance vibration endurance test bed for a gearbox bearing of a motor train unit provided by the first embodiment;
in the figure: 100-motor train unit gearbox bearing play vibration endurance test bed, 1-driving motor, 2-load motor, 3-main test gearbox system, 31-main torque force transmission assembly, 311-main torque sensor, 312-main outer flange coupling, 313-main drum-type tooth coupling, 314-main inner flange coupling, 315-main bearing seat flange coupling, 316-second main shaft box seat, 317-main double-row ball bearing, 318-main expansion sleeve coupling, 32-main test gear set, 33-main axle, 34-first main shaft box seat, 4-auxiliary test gearbox system, 41-auxiliary torque force transmission assembly, 42-auxiliary test gear set, 43-auxiliary axle, 44-first auxiliary shaft box seat, 51-base, 52-driving unit, 521-hydraulic support, 522-hydraulic cylinder, 523-hinge, 524-hinge seat, 53-transverse excitation vibration platform, 54-guide rail, 55-slide block, 6-torque transmission element, 61-main counter-force support seat and 62-auxiliary counter-force support seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a motor train unit gearbox bearing play vibration endurance test bed and a test method, and aims to solve the technical problem that the accuracy of a test result is influenced because the change of wheel-rail acting force on the axial load of a gearbox bearing is difficult to simulate by the conventional test bed device and the conventional test method.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1-2, the embodiment provides a motor train unit gearbox bearing clearance vibration endurance test bed 100, which includes a load motor 2, a driving motor 1, a main torque sensor 311, an auxiliary torque sensor, a main test gearbox system 3, an auxiliary test gearbox system 4 and a transverse excitation vibration platform 53, wherein the load motor 2 can drive the auxiliary test gearbox system 4 to rotate, the driving motor 1 is used for driving the main test gearbox system 3 to rotate, the driving motor 1 and the load motor 2 respectively drive the main test gearbox system 3 and the auxiliary test gearbox system 4 to rotate in opposite directions, the main test gearbox system 3 is in transmission connection with the auxiliary test gearbox system 4, so as to realize torque transmission, the auxiliary test gearbox system 4 is used for providing resistance, different torques are output through the load motor 2 according to test requirements, so as to simulate running resistance under different road conditions, the simulation authenticity is high, and then improve the accuracy of test result, main examination gear box system 3 and accompany examination gear box system 4 and all fix on transverse excitation vibration platform 53, and transverse excitation vibration platform 53 can drive main examination gear box system 3 and accompany examination gear box system 4 along the axial reciprocating motion of main examination gear box system 3, in order to provide transverse excitation and simulate the influence of the in-process crosswind of traveling, and then improve the authenticity of simulation, carry out endurance test again on this basis, can improve the accuracy of test result.
Specifically, the motor train unit gearbox bearing play vibration endurance test bed 100 provided by the embodiment further comprises a torque transmission element 6, two ends of the torque transmission element 6 are respectively fixed with the main test gearbox system 3 and the auxiliary test gearbox system 4, and the torque transmission element 6 is used for transmitting torque between the main test gearbox system 3 and the auxiliary test gearbox system 4, so that resistance received in the driving process is conveniently simulated through torque transmission in the test process, and further a real working state can be simulated.
As shown in fig. 1-3, the axle assembly further includes a main axle 33, a main torque force transmission assembly 31, a first main axle box seat 34 and a second main axle box seat 316, two ends of the main axle 33 are respectively rotatably mounted in the first main axle box seat 34 and the second main axle box seat 316 to support the main axle 33, one end of the main torque force transmission assembly 31 is fixedly connected with an output shaft of the driving motor 1, the other end of the main axle 33 is fixedly connected with one end of the main axle 33, the main axle 33 is provided and tested with torque through the main torque force transmission assembly 31 to improve stability during rotation, the main test gear set 32 is coaxially fixed with the main axle 33, and one end of the main axle 33 far away from the main torque force transmission assembly 31 is rotatably mounted on a large gear in the first main axle box seat 34, preferably, the first main axle box seat 34 is a quick-plugging box seat, which is convenient to connect, the main axle 33 is provided with support and maintain stable rotation through the first main axle box seat 34, and further improve the stability of the whole structure in the test process, the first main axle box seat 34 is fixed on the transverse excitation vibration platform 53, the main torque transmission assembly 31 is supported on the transverse excitation vibration platform 53 through the second main axle box seat 316, the main test gear set 32 is fixed with one end of the torque transmission element 6, preferably, the main test gear set 32 comprises a big gear and a small gear, the big gear is fixed on the main axle 33, the small gear is meshed with the periphery of the big gear, the small gear is fixedly sleeved on one end of the torque transmission element 6, so that when the driving motor 1 drives the big gear to rotate, the small gear can be driven to rotate, and the torque is acted on the torque transmission element 6, the auxiliary test gear set 42 has the same structure as the main test gear set 32, and the small gear in the auxiliary test gear set 42 is fixed with one end of the torque transmission element 6 far away from the main test gear set 32, when the auxiliary test gear set 42 is driven to rotate by the load motor 2, torque can be transmitted to the main test gear set 32 via the torque transfer element 6, thereby simulating the resistance experienced during travel;
the test accompanying gear box system 4 comprises an accompanying axle 43, an accompanying torque force transmission assembly 41, an accompanying gear set 42, a first accompanying axle box seat 44 and a second accompanying axle box seat, wherein two ends of the accompanying axle 43 are respectively and rotatably installed in the first accompanying axle box seat 44 and the second accompanying axle box seat, one end of the accompanying torque force transmission assembly 41 is fixedly connected with an output shaft of the load motor 2, the other end of the accompanying axle 43 is fixedly connected with one end of the accompanying axle 43, the accompanying axle 43 is provided and tested with torque through the accompanying torque force transmission assembly 41, the stability in the rotating process is improved, the accompanying gear set 42 and the accompanying axle 43 are coaxially fixed, one end of the accompanying axle 43, which is far away from the accompanying torque force transmission assembly 41, is rotatably installed on the first accompanying axle box seat 44, preferably, the first accompanying axle box seat 44 is a fast inserting axle box seat, the first accompanying axle box seat 44 is used for providing support and maintaining stable rotation of the accompanying axle 43, and further improving the stability of the whole structure in the testing process, the first auxiliary axle box seat 44 is fixed on the transverse excitation vibration platform 53, the auxiliary torque force transmission assembly 41 is supported on the transverse excitation vibration platform 53 through the second auxiliary axle box seat, and the auxiliary test gear set 42 is fixed with one end, far away from the main test gear set 32, of the torque transmission element 6.
As shown in fig. 4, the main torque force transmission assembly 31 includes a main torque sensor 311, a main outer flange coupling 312, a main drum-shaped tooth coupling 313, a main inner flange coupling 314, a main bearing seat flange coupling 315 and a main expansion sleeve coupling 318, the main torque sensor 311 is used for detecting the torque applied to the main axle 33, the main drum-shaped tooth coupling 313 can slide axially, so that the main test gearbox system 3 can realize transverse vibration independent of the driving motor 1, the main outer flange coupling 312, the main inner flange coupling 314 and the main bearing seat flange coupling 315 are all existing flange couplings, the output shaft of the driving motor 1, the main torque sensor 311, the main outer flange coupling 312, the main drum-shaped tooth coupling 313, the main inner flange coupling 314 and the main bearing seat flange coupling 315 are fixedly connected in sequence and are all connected in an interference fit manner to form a stable force transmission system, further, torque provided by the driving motor 1 is transmitted to the main axle 33 to drive the main axle 33 to rotate, the main bearing seat flange coupling 315 extends into the second main axle box seat 316, a main double-row ball bearing 317 is fixed in the second main axle box seat 316, the main double-row ball bearing 317 is sleeved on the periphery of the main bearing seat flange coupling 315, the main double-row ball bearing 317 is fixed in the second main axle box seat 316, one end of the main inner side flange coupling 314 can penetrate through the main double-row ball bearing 317 and is connected with the main expansion sleeve coupling 318, the other end of the main expansion sleeve coupling 318 is fixedly sleeved at one end of the main axle 33, and the main expansion sleeve axially limits the main axle 33 to prevent falling;
the accompanying torque force transmission assembly 41 comprises an accompanying torque sensor, an accompanying outer side flange coupler, an accompanying drum-shaped gear coupler, an accompanying inner side flange coupler, an accompanying bearing seat flange coupler and an accompanying expansion sleeve coupler, wherein the accompanying torque sensor is used for detecting torque on an accompanying axle 43, and the accompanying drum-shaped gear coupler can realize axial sliding, so that the accompanying gear box system 4 can realize transverse vibration independent of the load motor 2, the output shaft of the load motor 2, the accompanying torque sensor, the accompanying outer side flange coupler, the accompanying drum-shaped gear coupler, the accompanying inner side flange coupler and the accompanying bearing seat flange coupler are fixedly connected in sequence and are connected in interference fit to form a stable force transmission system, further the torque provided by the load motor 2 is transmitted to the accompanying axle 43 to drive the accompanying axle 43 to rotate, and the accompanying bearing seat flange coupler extends into a second accompanying axle box seat, the axle box seat internal fixation is accompanied to the second has the biserial ball bearing of accompanying, accompany the biserial ball bearing cover and locate and accompany bearing frame flange shaft coupling periphery, and accompany the biserial ball bearing to be fixed in the second and accompany the axle box seat in, accompany the one end of inboard flange shaft coupling can pass and accompany in the biserial ball bearing and with accompany the cover shaft coupling fixed connection that expands, accompany the fixed cover of the other end of the cover shaft coupling of expanding and locate the one end of accompanying axletree 43 through accompany the cover that expands to the axial of accompanying axletree 43 spacing, prevent to drop.
As shown in fig. 1-2, the motor train unit gearbox bearing play vibration endurance test bed 100 further includes two counter-force supporting seats, both of which are fixed on the transverse excitation vibration platform 53, rotatably connected to two ends of the torque transmission element 6, respectively, and used for supporting the torque transmission element 6, so as to ensure the torque transmission element 6 and each pinion to be coaxial, thereby ensuring the torque transmission element to stably rotate, wherein the counter-force supporting seat connected to the main test gear set is a main counter-force supporting seat 61, and the other counter-force supporting seat is an auxiliary counter-force supporting seat 62.
Still be fixed with the main support on the transverse excitation vibration platform 53 and accompany the support, the main support is located main examination gear train 32 lower extreme, and the main support upper end is connected with main examination gear train 32 rotation, and be used for supporting main examination gear train 32, accompany the support and be located and accompany examination gear train 42 lower extreme, and accompany the support upper end and accompany examination gear train 42 rotation and be connected and be used for supporting and accompany examination gear train 42, and then when trying gear train 32 and accompany examination gear train 42 and provide the holding power to main, still can not restrict its rotation, guarantee that each center pin that needs pivoted component all is located same height.
As shown in fig. 5-8, the transverse excitation vibration platform further comprises a base 51 and a driving unit 52, wherein at least one guide rail 54 is fixed on the base 51, at least one sliding block 55 is arranged on the lower end surface of the transverse excitation vibration platform 53, one guide rail 54 corresponds to at least one sliding block 55, and the sliding block 55 can slide in the guide rail 54 in a reciprocating manner so as to limit the moving direction of the platform 53 through the cooperation of the guide rail 54 and the sliding block 55, so that the platform 53 can move in a reciprocating manner along the axial direction of the main axle 33, the driving unit 52 is fixed at the end part of the transverse excitation vibration platform 53, and the driving unit 52 is used for driving the transverse excitation vibration platform 53 to move in a reciprocating manner along the axial direction of the main test gear box system 3 and making the sliding block 55 slide in the guide rail 54, so as to ensure that the moving speed and amplitude of the transverse excitation vibration platform 53 can be accurately controlled through the driving unit 52 so as to provide accurate transverse excitation.
The transverse excitation vibration platform 53 is rectangular, the number of the driving units 52 is four, two driving units 52 are respectively arranged at two opposite ends of the transverse excitation vibration platform 53, and then the motion state of the transverse excitation vibration platform 53 is controlled at the two ends of the transverse excitation vibration platform 53, so that the control precision is improved, and the problem of control failure caused by overlarge weight of the transverse excitation vibration platform 53 and parts at the upper end of the transverse excitation vibration platform 53 is solved; guide rail 54 and slider 55 are four, and four sliders 55 are fixed in four bights of transverse excitation vibration platform 53 respectively, and guide rail 54 corresponds with slider 55 position, and then improves the stability of transverse excitation vibration platform 53 motion, and when preventing long-time endurance test, the cooperation of slider 55 and slide rail became invalid, and is more excellent, and slider 55 on every guide rail 54 is two, can improve the stability of slip in-process.
As shown in fig. 7, the driving unit 52 is a hydraulic cylinder 522 unit, the driving unit 52 includes a hydraulic support 521, a hydraulic cylinder 522, a hinge 523 and a hinge seat 524, the hydraulic support 521 is fixed on the upper end surface of the base 51, the hydraulic cylinder 522 is fixed on the hydraulic support 521, the output end of the hydraulic cylinder 522 is fixedly connected with the hinge 523, the hinge 523 is hinged on the hinge seat 524, and the hinge seat 524 is fixed on the side wall of the transverse excitation vibration platform 53, so that the transverse excitation vibration platform 53 can reciprocate along the axial direction of the main axle 33 and can vibrate to more accurately simulate a real working state, the hydraulic cylinders 522 on the same side wall have the same working state, and the hydraulic cylinders 522 on different side walls have the opposite working states.
Example two
The embodiment provides a motor train unit gearbox bearing clearance vibration endurance test method, which uses the motor train unit gearbox bearing clearance vibration endurance test stand in the first embodiment and comprises the following steps:
s1: the driving motor 1 is started, the load motor 2 is not electrified, the driving motor 1 drives the main test gear box system 3 to rotate, the main test gear box system 3 drives the test-accompanying gear box system 4 to rotate, and the test-accompanying gear box system 4 drives the load motor 2 to rotate, so that no-load tests are performed, the working state of each component is verified, and the test can be performed on the premise that each component can normally work;
s2: keeping the driving motor 1 started, starting the load motor 2, enabling the driving motor 1 to drive the main test gear box system 3 to rotate, enabling the load motor 2 to drive the auxiliary test gear box system 4 to rotate, and changing the output torque of the load motor 2 so as to simulate different resistance forces in the driving process, thereby truly restoring the situation in the driving process and improving the accuracy of the test result; the transverse excitation vibration platform 53 drives the main test gear box system 3 and the auxiliary test gear box system 4 to move in a reciprocating mode so as to simulate transverse excitation vibration, simulate crosswind in the driving process and ensure that all factors in driving can be simulated.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
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