CN115638943A - Excitation test bench and excitation test device - Google Patents
Excitation test bench and excitation test device Download PDFInfo
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- CN115638943A CN115638943A CN202211313257.3A CN202211313257A CN115638943A CN 115638943 A CN115638943 A CN 115638943A CN 202211313257 A CN202211313257 A CN 202211313257A CN 115638943 A CN115638943 A CN 115638943A
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- 238000012360 testing method Methods 0.000 title claims abstract description 147
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- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
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- 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
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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
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Abstract
The application relates to the field of bogie tests, in particular to a vibration excitation test bed and a vibration excitation test device. The excitation test bed comprises two groups of test mechanisms, any group of test mechanisms comprises a motor, a synchronous gear box, a speed change gear box and a track wheel device, the track wheel device comprises two track wheels, the motor is connected with the first end of the synchronous gear box, the second end of the synchronous gear box is connected with the first end of the speed change gear box, the second end of the speed change gear box is connected with the two track wheels to drive the two track wheels to rotate, the third end of the synchronous gear box is connected with the third end of the synchronous gear box, the outer edges of the track wheels are polygons, and sine waves are distributed on the polygons. According to the excitation test bed and the excitation test device, the problems that the front axle and the rear axle of the bogie are synchronous, the precision is low and high-frequency excitation under a power test condition cannot be realized by the conventional excitation test bed are solved.
Description
Technical Field
The application relates to the field of bogie tests, in particular to a vibration excitation test bed and a vibration excitation test device.
Background
Along with the continuous improvement of the speed of the motor train unit and the increase of the operation mileage, more and more quality structure problems are exposed. The reason for this is that the influence of vibration damage cannot be avoided, and high-frequency vibration is the main factor causing structural damage. The conventional dynamic response characteristic research under the high-frequency excitation input condition mainly aims at a single part, and the requirement of the bogie on the test verification of high-frequency vibration in the forward design process cannot be met. Therefore, the bogie high-frequency excitation test bed has important significance for forward design of the bogie and parts thereof in a high-frequency vibration environment and solving of quality problems caused by high-frequency vibration of the bogie.
In contrast, the existing test bed mainly adopts a structural form of a motor, a gear box and a rail wheel, and realizes synchronization of the front axle and the rear axle of the bogie through electrical synchronization, but the electrical synchronization precision is low in the above mode; and the outer edge of the track wheel is circular, so that the excitation frequency effect is poor, high-frequency excitation under the power test condition cannot be realized, and the test effect is further influenced.
Disclosure of Invention
The application aims to provide a vibration excitation test bed and a vibration excitation test device, so that the problems that the existing vibration excitation test bed realizes synchronization of a front shaft and a rear shaft of a bogie, the precision is low, and high-frequency vibration excitation under a power test condition cannot be realized are solved.
According to the first aspect of this application, a vibration excitation test bench is provided, the vibration excitation test bench includes two sets of test mechanism, arbitrary group test mechanism includes motor, synchromesh box, change speed gear box and rail wheel device, rail wheel device includes two rail wheels, arbitrary group test mechanism includes the motor is connected synchromesh box's first end, change speed gear box's second end is connected change speed gear box's first end, change speed gear box's second end is connected two the rail wheel is connected two in order to drive two the rail wheel is rotatory, and is two sets of in the test mechanism a set of test mechanism includes synchromesh box's third end and another group test mechanism includes synchromesh box's third end is connected, the outer fringe of rail wheel is the polygon, the polygon distributes for the sine wave.
In any of the above technical solutions, further, the excitation frequency: f = nN/60i, where N is the rotational speed of the motor, N is the number of polygons of the track wheels, and i is the total gear ratio of the synchronous gearbox and the change gear gearbox.
In any of the above technical solutions, further, any one of the groups of test mechanisms further includes a first coupler, a second coupler, a third coupler, a fourth coupler, and a fifth coupler, the motor of any one of the groups of test mechanisms is connected to the first end of the synchronous gearbox through the first coupler, the second end of the synchronous gearbox is connected to the first end of the speed change gearbox through the second coupler, the second end of the speed change gearbox is connected to one of the track wheels through the third coupler, one of the track wheels is connected to the other track wheel through the fourth coupler, the third end of the synchronous gearbox is connected to the third end of the synchronous gearbox of the other group through the second coupler, axial directions of the second coupler, the third coupler, and the fourth coupler all extend along a first direction, axial directions of the first coupler and the fifth coupler all extend along a second direction, and the first direction is perpendicular to the second direction.
In any of the above technical solutions, further, the excitation test bed further includes two sets of tracks, and any group the test mechanism further includes a transmission platform and a first platform, and any group the test mechanism the motor the synchronous gearbox and the change-speed gearbox all set up in the transmission platform, the transmission platform is with one of them group track sliding connection, and can slide along the second direction on the current track, and any group two rail wheels of the test mechanism all set up in the first platform, the first platform is with another group track sliding connection, and can slide along the second direction on the current track.
In any of the above technical solutions, further, the rail wheel device further includes a rotation speed sensor, and the rotation speed sensor is configured to detect a rotation speed of the rail wheel.
In any of the above technical solutions, further, any one group of the testing mechanisms further includes a second platform and a center pin, the second platform is connected to the first platform, two rail wheels of any one group of the testing mechanisms are both disposed on the second platform, the center pin penetrates through the first platform and is connected to the second platform, and the second platform can rotate around the center pin relative to the first platform.
According to a second aspect of the present application, there is provided a vibration excitation test apparatus comprising a vibration excitation test stand as described above.
In any of the above technical solutions, further, the excitation test device includes a base, the base is provided with a groove, the excitation test bench is disposed in the groove, the excitation test device further includes a traction device, the traction device is disposed on the base, and the traction device is used for connecting a tested bogie, so that the tested bogie moves in the second direction.
In any of the above technical solutions, further, the traction device includes a traction cylinder and a pull rod, the excitation test device further includes a cross beam, a stand column, a compression cylinder and a dummy car body, the bottom of the dummy car body is used for connecting the tested bogie, four wheels and four of the tested bogie contact with the track wheels, the stand column is connected with the track, the cross beam is connected with the stand column, the two ends of the compression cylinder are respectively connected with the cross beam and the top of the dummy car body, and the traction cylinder passes through the pull rod to be connected with the end of the dummy car body.
In any of the above technical solutions, further, the traction device includes a traction cylinder and a pull rod, the shock excitation test device further includes a steel rail, the steel rail is disposed on the base, a non-tested bogie of the tested vehicle is placed on the steel rail, four wheels of the tested bogie are in contact with the four track wheels, and the traction cylinder is connected to an end of the tested vehicle through the pull rod.
According to the excitation test bench and the excitation test device of this application, the excitation test bench includes two sets of test mechanisms, wherein, arbitrary group's test mechanism includes motor, synchronous gear case, change speed gear box and rail wheel device, and the rail wheel device includes two rail wheels, and arbitrary a set of motor is connected change speed gear box's first end, change speed gear box's first end is connected to change speed gear box's second end, and two rail wheels are connected to change speed gear box's second end to it is rotatory to drive two rail wheels, and synchronous gear box's third end is connected with the third end of another set of synchronous gear case, and the outer fringe of rail wheel is the polygon, and the polygon distributes the sine wave.
The utility model provides a structural style that the test bench passes through motor + synchronous gear case + change gear case + rail wheel device to the mechanical synchronization of diaxon around realizing the bogie, synchronous precision is high, the reliability is high, and the rail wheel processes into polygonal form, but high frequency excitation under the simulated load test, experimental actual conditions that is close more.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 illustrates a top view of a shock excitation test stand according to an embodiment of the present application;
FIG. 2 illustrates a top view of a traction device and a rail according to an embodiment of the present application;
fig. 3 is a plan view showing a partial structure of a vibration excitation test apparatus according to an embodiment of the present application;
FIG. 4 shows a schematic view during a vehicle test to be tested according to an embodiment of the present application;
FIG. 5 shows a schematic view during a bogie test according to an embodiment of the present application;
FIG. 6 illustrates a side view of a shock excitation test stand according to an embodiment of the present application;
FIG. 7 shows a schematic structural diagram of a rail-wheel arrangement according to an embodiment of the present application;
fig. 8 shows a schematic view of an outer rim profile of a rail wheel according to an embodiment of the present application.
Icon: 1-a track; 2-a transmission platform; 3, a motor; 4-a first coupling; 5-a synchronous gearbox; 6-a second coupling; 7-a change speed gearbox; 8-a third coupling; 9-a lubricating mechanism; 10-a rail-wheel arrangement; 11-a fourth coupling; 12-a first platform; 13-a second platform; 14-an angle of attack adjustment mechanism; 15-a traction device; 16-a pull rod; 17-vehicle under test; 18-a guide rail; 19-steel rail; 20-T-shaped groove plates; 21-a weight; 22-tested bogie; 23-false car body; 24-a compression oil cylinder; 25-a portal frame; 26-a rotation speed sensor support; 27-a rotational speed sensor; 28-speed measuring fluted disc flange; 29-center pin; 101-a mount; 102-a bearing seat; 103-a rail wheel; 104-a sensor; 151-mounting a base plate; 152-a traction base; 153-a traction cylinder; 154-hydraulic station; 231-false body frame; 232-vertical beam; 233-connecting rods; 234-a mounting frame; 251-a mounting base; 252-a column; 253-connecting beams; 254-beam.
Detailed Description
The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art in view of the disclosure of the present application. For example, the order of operations described herein is merely an example, which is not limited to the order set forth herein, but rather, may be changed in addition to operations that must occur in a particular order, as will be apparent upon an understanding of the present disclosure. Moreover, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.
The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after understanding the disclosure of the present application.
Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on," "connected to," coupled to, "over," or "overlying" another element, it may be directly "on," "connected to," coupled to, "over," or "overlying" the other element, or one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," directly coupled to, "directly over" or "directly overlying" another element, there may be no intervening elements present.
As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.
Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section referred to in the examples described herein may be termed a second element, component, region, layer or section without departing from the teachings of the examples.
For ease of description, spatial relationship terms such as "above 8230 \8230; above", "upper", "above 8230 \8230; below" and "lower" may be used herein to describe the relationship of one element to another element as shown in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be oriented "below" or "lower" relative to the other elements. Thus, the term "over" \\8230; \8230; "includes both orientations" over "\8230; \8230and" under "\8230;" depending on the spatial orientation of the device. The device may also be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.
Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.
The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.
The application provides a vibration excitation test bed and a vibration excitation test device, so that the problems that the front shaft and the rear shaft of a bogie are synchronous, the precision is low and high-frequency vibration excitation under a power test condition cannot be realized by the conventional vibration excitation test bed are solved.
Along with the continuous improvement of the speed of the motor train unit and the increase of the operation mileage, more and more quality structure problems are exposed. The reason for this is that the influence of vibration damage cannot be avoided, and high-frequency vibration is the main factor causing structural damage. The conventional dynamic response characteristic research under the high-frequency excitation input condition mainly aims at a single part, and the requirement of the bogie on the test verification of high-frequency vibration in the forward design process cannot be met. Therefore, the bogie high-frequency excitation test bed has important significance for forward design of the bogie and parts thereof in a high-frequency vibration environment and solving of quality problems caused by high-frequency vibration of the bogie.
Before the application is provided, the existing test bed mainly adopts a structural form of a motor, a gear box and a rail wheel, and realizes the synchronization of the front axle and the rear axle of the bogie through electrical synchronization, but the electrical synchronization precision is low in the above mode; and the outer edge of the track wheel is circular, so that the excitation frequency effect is poor, high-frequency excitation under the power test condition cannot be realized, and the test effect is further influenced.
In view of this, according to the first aspect of the present application, a vibration excitation test bed is provided, which includes two sets of test mechanisms, wherein any set of test mechanism includes a motor 3, a synchronous gearbox 5, a speed change gearbox 7 and a track wheel device 10, the track wheel device 10 includes two track wheels 103, the motor 3 of any set is connected to a first end of the synchronous gearbox 5, a second end of the synchronous gearbox 5 is connected to a first end of the speed change gearbox 7, a second end of the speed change gearbox 7 is connected to two track wheels 103 to drive the two track wheels 103 to rotate, a third end of the synchronous gearbox 5 is connected to a third end of the synchronous gearbox 5 of another set, an outer edge of the track wheel 103 is a polygon, and sine waves are distributed in the polygon.
The utility model provides a test bench passes through motor 3+ synchronous gear box 5+ change gear box 7+ rail wheel device 10's structural style to the mechanical synchronization of diaxon around realizing the bogie, synchronous precision is high, the reliability is high, and rail wheel 103 processes into polygonal form, but high frequency excitation under the simulation load test, experimental actual conditions that is close more. In addition, the rail wheel 103 processed into a polygonal form can also bear (simulate) a high-speed train with large mass. The specific structure and test procedure of the excitation test stand and the excitation test apparatus will be described in detail below.
In the embodiment of the present application, as shown in fig. 8, the outer edge of the rail wheel 103 is polygonal, and sine waves are distributed in the polygonal shape. When the number of the polygon of the rail wheel 103 is constant, the relationship between the rotating speed of the motor 3 and the excitation frequency is as follows:
f = nN/60i (where f is the excitation frequency, hz; N is the rotational speed of the motor 3, r/min; i is the total transmission ratio of the synchromesh gearbox 5 and the change-speed gearbox 7; and N is the number of the polygon sides of the rail wheel 103). Further, the following various cases can be simulated as needed according to the above formula.
For example, the frequency excitation test bed is used for simulating the special working condition of large-mass, high-frequency and large-amplitude excitation of a high-speed train, and related research tests under full-frequency-domain excitation of the bogie can be developed on the test bed. The method is characterized in that the method reproduces the running condition of the vehicle line by controlling test variables (exciting roller roughness, polygon order and the like) and is used for researching the influence of defects such as wheel polygons, track corrugation and the like on each part of the vehicle. The method has the advantages that the vibration and stress influence of the bogie system under the conditions of different running speeds, different loading working conditions, line diseases, vehicle faults, wheel abrasion (polygons and scratches) and the like and the mapping relation with the running state of the real vehicle are reproduced, so that the rapid diagnosis of the faults of the vehicle and the track is realized;
(1) Testing the whole working mode (the testing frequency range is 0-1200 Hz) of the bogie to match with the line excitation under the operation condition, and realizing the forward design under the high-frequency vibration condition of the bogie; (2) The flutter and stress response of cantilever structures such as bogie braking, traction, a gearbox suspender and the like under a high-frequency impact test (the frequency of P1 force is 500-1200 Hz, and a series of transient impacts such as turnouts, rail joints, wheel scratches and the like); (3) Stress response of the bogie system under the action of P2 force is researched (the frequency of the P2 force is 20 Hz-100 Hz, and P2 resonance of a wheel-rail system can be caused by rail irregularity and wheel circumferential irregularity); (4) Testing the natural vibration characteristic and the vibration transmission relation of the suspension system under the condition of high-frequency disturbance (0-1200 Hz); (5) The stress and vibration test of the rotating parts (bearings, axles, wheel sets and the like) of the high-speed train under the conditions of high speed (0-500 km/h) and high frequency (0-1200 Hz) is realized.
In the embodiment of the present application, as shown in fig. 1, any group of testing mechanisms further includes a first coupler 4, a second coupler 6, a third coupler 8, a fourth coupler 11, and a fifth coupler, the motor 3 of any group is connected to the first end of the synchronous gearbox 5 through the first coupler 4, the second end of the synchronous gearbox 5 is connected to the first end of the speed-change gearbox 7 through the second coupler 6, the second end of the speed-change gearbox 7 is connected to one of the track wheels 103 through the third coupler 8, one of the track wheels 103 is connected to the other track wheel 103 through the fourth coupler 11, the third end of the synchronous gearbox 5 is connected to the third end of the synchronous gearbox 5 of the other group through the second coupler 6, wherein the axial directions of the second coupler 6, the third coupler 8, and the fourth coupler 11 all extend along a first direction, and the axial directions of the first coupler 4 and the fifth coupler all extend along a second direction, and the first direction is perpendicular to the second direction.
Further, the excitation test bed further comprises two groups of tracks 1 (any group of tracks 1 can be two tracks 1), any group of test mechanisms further comprises a transmission platform 2 and a first platform 12, the motor 3, the synchronous gearbox 5 and the speed change gearbox 7 of any group of test mechanisms are all arranged on the transmission platform 2, the transmission platform 2 is in sliding connection with one group of tracks 1 and can slide on the current track 1 along a second direction, two track wheels 103 of any group of test mechanisms are all arranged on the first platform 12, and the first platform 12 is in sliding connection with the other group of tracks 1 and can slide on the current track 1 along the second direction.
Here, as shown in fig. 1, by extension and contraction of the fifth coupling or replacement of the intermediate link, the adjustment of the test stand wheelbase to fit the wheelbase L1 of the vehicle 17 to be tested or the bogie 22 to be tested (while sliding the transmission platform 2 or the first platform 12) can be achieved.
Furthermore, as shown in fig. 6, the position between the two rail wheels 103 in the rail wheel device 10 can also be adjusted in the length direction of the first platform 12, that is, by replacing the length or the intermediate joint of the fourth coupling 11 to fit the gauge L2 of the vehicle 17 or the bogie 22 to be tested.
In the embodiment of the present application, when a test object (a vehicle under test 17 or a bogie under test 22) is tested, the rail wheels 103 are in contact with the wheels under test, and the rail wheels 103 are driven to rotate by the motor 3, the coupling, the synchromesh gearbox 5, and the change gear box 7, thereby exciting the test object. According to test requirements, the motor 3 is used as a load, the motor 3 on the tested object is used for driving, and high-frequency excitation can be performed on the tested object under the load condition. The specific test process is as follows:
according to a second aspect of the present application, there is provided a vibration excitation test apparatus comprising a vibration excitation test stand as described above.
The excitation test device comprises a base, a groove is formed in the base, the excitation test bed is arranged in the groove, the excitation test device further comprises a traction device 15, the traction device 15 is arranged on the base (outside the groove of the base), and the traction device 15 is used for being connected with a tested bogie 22 so that the tested bogie 22 can move in the second direction.
The test procedure for the bogie is described in detail below:
in the embodiment of the present application, as shown in fig. 3 and 5, the traction device 15 may include a mounting base 151, a traction base 152, a traction cylinder 153, and a hydraulic station 154, and the hydraulic station 154 controls the extension and retraction of the traction cylinder 153 to drive the extension and retraction of the pull rod 16, so as to achieve longitudinal movement adjustment and traction positioning (i.e., the second direction) of the test object (the tested vehicle 17 or the tested bogie 22) to enable four wheels of the tested bogie 22 to contact with the four rail wheels 103.
As shown in fig. 5, the gantry 25 includes a mounting base 251, a column 252, a connecting beam 253, and a beam 254. The column 252 of the gantry 25 is mounted on the rail by the mounting base 251, and the beam 254 connects the column 252.
The dummy car body 23 includes a dummy car body frame 231, vertical beams 232, a connecting bar 233, and a mounting bracket 234. The dummy car body 23 mainly simulates the body of the tested bogie 22, and the dummy car body 23 is used for carrying out longitudinal restraint and vertical loading on the tested bogie.
Specifically, the spherical hinges at two ends of the compression oil cylinder 24 are respectively connected with the cross beam 254 of the portal frame 25 and the top of the fake vehicle body frame 231 of the fake vehicle body 23, the bottom of the fake vehicle body frame 231 is connected with the bogie, the pull rod 16 is connected with the end part of the fake vehicle body frame 231, the stretching of the traction oil cylinder 153 is controlled through the hydraulic station 154, the stretching of the pull rod 16 is driven, the longitudinal movement adjustment and the traction positioning (namely, the second direction) of the tested bogie 22) can be realized, and meanwhile, the axle load of the tested bogie 22 is simulated through the compression oil cylinder 24. When the positioning is completed, the mounting brackets 234 at both ends are locked.
The test procedure for the vehicle will be described in detail below:
as shown in fig. 2 and 4, the rail 19 is installed on the foundation (base) by pre-burying a T-shaped trough plate 20, the rail 19 is installed on the T-shaped trough plate 20 by a weight 21, and the gauge of the rail 19 can be adjusted by moving along the T-shaped trough direction of the T-shaped trough plate 20. When the tested vehicle is the tested vehicle 17, the position of the left traction device 15 is adjusted, and meanwhile, the non-tested bogie of the tested vehicle is placed on the steel rail 19. The T-shaped groove guide rail 18 is pre-buried and installed on the foundation, the traction device 15 is installed on the T-shaped groove guide rail 18, and the traction device 15 can be adapted to different tested article lengths after moving along the T-shaped groove direction of the T-shaped groove guide rail 18. The traction cylinder 153 of the traction device 15 is connected to the end of the vehicle under test 17 via the tie rod 16.
Preferably, the other end of the vehicle or of the dummy car body 23 can also be provided with a traction device 15 of the same construction.
In the embodiment of the present application, as shown in fig. 7, two ends of the shaft of any one rail wheel 103 of the rail wheel device 10 may be limited by two bearing seats 102, the bottom limited by the two bearing seats 102 is provided with a mounting seat 101, and the top of the two bearing seats 102 is provided with a sensor 104.
As shown in fig. 6, the shock excitation test apparatus may further include an attack angle adjustment mechanism 14, and the attack angle adjustment may be completed by adjusting the attack angle adjustment mechanism 14 to rotate the rail wheel apparatus 10.
Specifically, each set of test mechanism further comprises a second platform 13 and a center pin 29, the second platform 13 is connected to the first platform 12, the two rail wheels 103 of each set of test mechanism are arranged on the second platform 13, namely, two mounting seats 101 at the bottom of the two rail wheels 103 are arranged on the second platform 13, the center pin 29 penetrates through the first platform 12 and is connected with the second platform 13, and the second platform 13 can rotate around the center pin 29 relative to the first platform 12. The field personnel can adjust the attack angle according to the requirement so that the tested vehicle can smoothly pass through the four track wheels 103, and the phenomenon of blocking caused by the fixed attack angle is prevented.
In addition, in the embodiment of the present application, as shown in fig. 6, a rotational speed sensor bracket 26 is installed on one side of the second platform 13, and a rotational speed sensor 27 is installed on the rotational speed sensor bracket 26, so that the rotational speed on the rail wheel 103 side is measured by the shaft end speed measuring fluted disc flange 28 and the rotational speed sensor 27 of the bearing seat 102. The rotation speed sensor 27 can more accurately measure the rotation speed of the rail wheel 103 side.
Further, in the embodiment of the present application, as shown in fig. 1 and 3, the lubricating mechanism 9 is used for lubricating and cooling the rail wheel device 10, the synchromesh gear box 5, and the change-speed gear box 7, that is, for supplying lubricating oil to the rail wheel device 10, the synchromesh gear box 5, and the change-speed gear box 7.
According to the excitation test bench and the excitation test device of this application, the excitation test bench includes two sets of test mechanism, wherein, arbitrary group's test mechanism includes motor, synchromesh box, change speed gear box and rail wheel device, and the rail wheel device includes two rail wheels, and any group's motor is connected change speed gear box's first end, change speed gear box's first end is connected to change speed gear box's second end, and two rail wheels are connected to change speed gear box's second end to it is rotatory to drive two rail wheels, and change speed gear box's third end is connected with the third end of another group's synchromesh box, and the outer fringe of rail wheel is the polygon, the polygon sine wave that distributes.
The utility model provides a structural style that the test bench passes through motor + synchronous gear case + change gear case + rail wheel device to the mechanical synchronization of diaxon around realizing the bogie, synchronous precision is high, the reliability is high, and the rail wheel processes into polygonal form, but high frequency excitation under the simulated load test, experimental actual conditions that is close more.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A vibration excitation test bed is characterized by comprising two groups of test mechanisms, wherein any group of test mechanism comprises a motor, a synchronous gear box, a speed change gear box and a rail wheel device, the rail wheel device comprises two rail wheels,
the motor included in any group of the test mechanisms is connected with a first end of the synchronous gearbox, a second end of the synchronous gearbox is connected with a first end of the speed change gearbox, a second end of the speed change gearbox is connected with the two rail wheels so as to drive the two rail wheels to rotate,
the third end of the synchronous gearbox included by one testing mechanism in the two groups of testing mechanisms is connected with the third end of the synchronous gearbox included by the other testing mechanism in the two groups of testing mechanisms,
the outer edge of the rail wheel is polygonal, and the polygons are distributed to be sine waves.
2. The excitation test stand of claim 1, wherein the excitation frequency is: f = nN/60i,
wherein n is the rotating speed of the motor,
n is the number of polygons of the rail-wheel,
i is the total gear ratio of the synchronous gearbox and the change speed gearbox.
3. The excitation test stand of claim 1 wherein any set of the test mechanisms further comprises a first coupling, a second coupling, a third coupling, a fourth coupling, and a fifth coupling,
the motor of any group of the test mechanisms is connected with the first end of the synchronous gearbox through the first coupling, the second end of the synchronous gearbox is connected with the first end of the speed change gearbox through the second coupling, the second end of the speed change gearbox is connected with one of the rail wheels through the third coupling, one of the rail wheels is connected with the other rail wheel through the fourth coupling, and the third end of the synchronous gearbox is connected with the third end of the synchronous gearbox of the other group through the second coupling,
the axial directions of the second coupler, the third coupler and the fourth coupler all extend along a first direction,
the first coupler and the fifth coupler extend in the axial direction along the second direction, and the first direction is perpendicular to the second direction.
4. The excitation test stand of claim 3, wherein the excitation test stand further comprises two sets of rails, wherein any one set of the test mechanisms further comprises a drive platform and a first platform,
the motor, the synchronous gearbox and the speed change gearbox of any group of the test mechanisms are all arranged on the transmission platform,
the transmission platform is connected with one group of the rails in a sliding manner and can slide on the current rail along a second direction,
two rail wheels of any group of the test mechanisms are arranged on the first platform,
the first platform is connected with the other group of rails in a sliding mode and can slide on the current rail along the second direction.
5. The excitation test stand of claim 3, wherein the rail wheel apparatus further comprises a rotational speed sensor for detecting a rotational speed of the rail wheel.
6. The excitation test stand of claim 4 wherein any set of the test mechanisms further comprises a second platform and a center pin, the second platform being connected to the first platform,
two rail wheels of any group of the test mechanisms are arranged on the second platform,
the center pin penetrates through the first platform and is connected with the second platform, and the second platform can rotate around the center pin relative to the first platform.
7. A vibration excitation testing apparatus comprising a vibration excitation testing stand according to any one of claims 3 to 6.
8. The excitation testing apparatus of claim 7, wherein the excitation testing apparatus comprises a base, the base is provided with a groove, the excitation test bed is disposed in the groove,
the excitation test device further comprises a traction device, the traction device is arranged on the base and is used for being connected with a tested bogie, so that the tested bogie moves in the second direction.
9. The excitation test device of claim 8, wherein the traction device comprises a traction cylinder and a pull rod, the excitation test device further comprises a cross beam, a column, a compression cylinder and a dummy car body,
the bottom of the fake vehicle body is used for connecting the tested bogie, four wheels of the tested bogie are in contact with four rail wheels,
the upright posts are connected with the tracks, the cross beams are connected with the upright posts,
the two ends of the compression oil cylinder are respectively connected with the beam and the top of the false car body,
the traction oil cylinder is connected with the end part of the false car body through the pull rod.
10. The shock excitation test apparatus of claim 8, wherein the traction apparatus comprises a traction cylinder and a pull rod, the shock excitation test apparatus further comprising a steel rail,
the steel rail is arranged on the base, a non-tested bogie of the tested vehicle is placed on the steel rail, four wheels of the tested bogie are in contact with the four track wheels,
the traction oil cylinder is connected with the end part of the tested vehicle through the pull rod.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211313257.3A CN115638943A (en) | 2022-10-25 | 2022-10-25 | Excitation test bench and excitation test device |
| PCT/CN2023/126363 WO2024088286A1 (en) | 2022-10-25 | 2023-10-25 | Excitation test bench and excitation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211313257.3A CN115638943A (en) | 2022-10-25 | 2022-10-25 | Excitation test bench and excitation test device |
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| CN115638943A true CN115638943A (en) | 2023-01-24 |
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| CN202211313257.3A Pending CN115638943A (en) | 2022-10-25 | 2022-10-25 | Excitation test bench and excitation test device |
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| CN (1) | CN115638943A (en) |
| WO (1) | WO2024088286A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124450A (en) * | 2023-04-04 | 2023-05-16 | 江苏海迪威液压有限公司 | Gear box vibration test device |
| WO2024088286A1 (en) * | 2022-10-25 | 2024-05-02 | 中车长春轨道客车股份有限公司 | Excitation test bench and excitation test device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060044127A (en) * | 2004-11-11 | 2006-05-16 | 샬롬엔지니어링 주식회사 | Bogie car test apparatus and system using the same |
| JP5202873B2 (en) * | 2007-05-29 | 2013-06-05 | 東海旅客鉄道株式会社 | Railway vehicle running test equipment |
| JP5202874B2 (en) * | 2007-05-29 | 2013-06-05 | 東海旅客鉄道株式会社 | Railway vehicle running test equipment |
| CN105784361B (en) * | 2016-05-30 | 2018-01-16 | 吉林大学 | Dynamic power machine closed loop tilting polygon exciting gear box test table |
| CN106323655A (en) * | 2016-11-17 | 2017-01-11 | 中车长春轨道客车股份有限公司 | Testing device for researching wheel-rail relations |
| CN108106867A (en) * | 2017-11-21 | 2018-06-01 | 中车长江车辆有限公司 | A kind of bogie dynamic-performance testing table |
| CN109211503B (en) * | 2018-09-13 | 2021-04-06 | 中车唐山机车车辆有限公司 | Dynamic testing device |
| JP7182505B2 (en) * | 2019-03-28 | 2022-12-02 | 株式会社ブリヂストン | Vibration Test Apparatus for Vibration Control Damper and Vibration Test Method for Vibration Control Damper |
| CN110823535B (en) * | 2019-09-29 | 2020-12-15 | 西南交通大学 | Bogie test bed |
| WO2022135711A1 (en) * | 2020-12-23 | 2022-06-30 | Nencki Ag | Test stand for testing bogies of rail vehicles |
| CN113465951B (en) * | 2021-07-12 | 2022-09-13 | 中车株洲电力机车有限公司 | Bogie dynamic performance simulation test bed and test method |
| CN115638943A (en) * | 2022-10-25 | 2023-01-24 | 中车长春轨道客车股份有限公司 | Excitation test bench and excitation test device |
-
2022
- 2022-10-25 CN CN202211313257.3A patent/CN115638943A/en active Pending
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2023
- 2023-10-25 WO PCT/CN2023/126363 patent/WO2024088286A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024088286A1 (en) * | 2022-10-25 | 2024-05-02 | 中车长春轨道客车股份有限公司 | Excitation test bench and excitation test device |
| CN116124450A (en) * | 2023-04-04 | 2023-05-16 | 江苏海迪威液压有限公司 | Gear box vibration test device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024088286A1 (en) | 2024-05-02 |
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