CN114812986A - Vibration test system of superconducting maglev train suspension frame - Google Patents
Vibration test system of superconducting maglev train suspension frame Download PDFInfo
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- CN114812986A CN114812986A CN202110070687.6A CN202110070687A CN114812986A CN 114812986 A CN114812986 A CN 114812986A CN 202110070687 A CN202110070687 A CN 202110070687A CN 114812986 A CN114812986 A CN 114812986A
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
Abstract
The invention provides a vibration test system of a superconducting magnetic suspension train suspension frame, which comprises a ground mounting assembly, a vibration platform, a vertical hydraulic vibration excitation assembly and a transverse hydraulic vibration excitation assembly, wherein a ground coil side beam and the suspension frame are arranged on the vibration platform, a ground coil module is arranged in the ground coil side beam, the vertical hydraulic vibration excitation assembly comprises a plurality of vertical hydraulic actuators, the plurality of vertical hydraulic actuators are arranged on the ground mounting assembly at intervals along the vertical direction, the plurality of vertical hydraulic actuators are used for applying vertical actuating force to the vibration platform, the transverse hydraulic vibration excitation assembly comprises at least one transverse hydraulic actuator, the transverse hydraulic vibration excitation assembly is arranged on the ground mounting assembly along the transverse direction, and the transverse hydraulic actuator is used for applying transverse actuating force to the vibration platform. By applying the technical scheme of the invention, the technical problems of serious coil heating, difficult design of a heat dissipation device, large motor capacity and large current control difficulty of a suspension frame test system in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of magnetic levitation vehicle test devices, in particular to a vibration test system of a superconducting magnetic levitation train suspension frame.
Background
The superconducting electromagnetic suspension vehicle (EDS) generally adopts side wall type suspension, ground suspension guide coils and ground propulsion coils are arranged on two side walls of a U-shaped track, superconducting magnets are arranged on two sides of a suspension frame, a magnetic field generated by the ground propulsion coils acts on the superconducting magnets to push the vehicle to run, a magnetic field generated by the superconducting magnets cuts the ground suspension coils to form induction current and induction electric fields, and suspension and guidance are realized by the interaction of the induction electric fields and the superconducting magnets. Because the superconducting magnet cuts the magnetic field generated by the ground coil to provide enough suspension force and guiding force only when the vehicle runs to a certain speed, a vibration test bed for the superconducting electric suspension frame is required to be designed for carrying out a rack test to verify the running performance of the vehicle before the vehicle is on line.
Patent JPA2004282956 has designed a kind of test device that realizes static suspension and dynamic vibration simulation through the unable static suspension's of active control ground coil current to the problem of superconductive magnetic levitation. The device comprises a pair of ground coil side beams, a ground coil module is installed on each ground coil side beam, the superconducting magnet and the suspension frame are statically suspended by independently controlling the direct current component of each coil current in the ground module, and the superconducting magnet vibration is simulated by controlling the alternating current component of each coil current in the ground module, so that the dynamic vibration simulation of the superconducting magnet and the suspension frame is realized.
The patent 'magnetic supported electromagnetic vibration device and vibration method' (JPA2004282956) realizes the bench test of superconducting electric system magnet and suspension rack, but has several disadvantages: firstly, in order to test the dynamic performance of the superconducting magnet and the suspension bracket, the coil module needs to be charged with large direct current and alternating current for a long time, so that the coil generates heat seriously, the heat dissipation device is difficult to design, and the motor capacity is large; secondly, the alternating current component of each coil needs to be actively controlled, so that the design difficulty of a control system is extremely high; thirdly, the ground coil is arranged on a pair of ground coil side beams, the side beams are arranged on the ground of a test site, and the vehicle actually runs on the U-shaped track beam, so that the mass and the rigidity of the vehicle are greatly different from those of the ground coil side beams, and the device cannot simulate rail coupling vibration.
Disclosure of Invention
The invention provides a vibration test system of a superconducting magnetic levitation train suspension frame, which can solve the technical problems of serious coil heating, difficult design of a heat dissipation device, large motor capacity and large current control difficulty of a suspension frame test system in the prior art.
The invention provides a vibration test system of a superconducting magnetic levitation train suspension frame, which comprises: a ground mounting assembly; the ground coil module is arranged in the ground coil side beam and is connected with the electrified cable; the vertical hydraulic vibration excitation assembly comprises a plurality of vertical hydraulic actuators, the plurality of vertical hydraulic actuators are arranged on the ground mounting assembly at intervals along the vertical direction, and the plurality of vertical hydraulic actuators are used for applying vertical actuating force to the vibration platform; the transverse hydraulic vibration excitation assembly comprises at least one transverse hydraulic actuator, the transverse hydraulic vibration excitation assembly is transversely arranged on the ground installation assembly, and the transverse hydraulic actuator is used for applying transverse actuating force to the vibration platform.
Furthermore, the vibration platform is provided with a plurality of mass block accommodating cavities, the mass block accommodating cavities are used for installing mass blocks, and the vibration test system realizes the simulation of the mass of the track beam by adjusting the number of the mass blocks.
Furthermore, the vibration test system of the superconducting magnetic levitation train suspension frame further comprises a stiffness platform and a spring assembly, the spring assembly comprises a plurality of springs, the vertical hydraulic vibration excitation assembly is connected with the stiffness platform, the stiffness platform is connected with the vibration platform through the spring assembly, the transverse hydraulic vibration excitation assembly is connected with the stiffness platform, and the vibration test system realizes the simulation of the stiffness of the track beam by adjusting the number of the springs of the spring assembly.
Further, the vibration test system of superconducting magnetic levitation train suspension frame still includes the top mounting bracket, top hydraulic actuator, top counter weight platform and empty spring loading platform, the top mounting bracket sets up on the ground installation subassembly and is located the upper portion of suspension frame, top hydraulic actuator sets up on the top mounting bracket, top counter weight platform is connected with top hydraulic actuator, top counter weight platform is used for carrying out the counter weight to the suspension frame, empty spring loading platform sets up on top counter weight platform, top hydraulic actuator passes through empty spring loading platform and applys the sprung mass of settlement power in order to simulate the suspension frame to the empty spring of suspension frame.
Furthermore, the vibration test system further comprises a longitudinal fixing device, the longitudinal fixing device is arranged on the vibration platform, and the longitudinal fixing device is used for limiting the longitudinal displacement of the suspension frame so as to realize the longitudinal positioning of the suspension frame.
Further, the vibration test system also comprises a slide rail, and the plurality of vertical hydraulic actuators are arranged on the slide rail.
Furthermore, the vibration test system also comprises a vertical speed sensor, a vertical acceleration sensor, a vertical displacement sensor, a transverse speed sensor, a transverse acceleration sensor and a transverse displacement sensor, wherein the vertical speed sensor, the vertical acceleration sensor and the vertical displacement sensor are all arranged in the vertical hydraulic vibration excitation assembly; the transverse speed sensor, the transverse acceleration sensor and the transverse displacement sensor are all arranged in the transverse hydraulic vibration excitation assembly, the transverse speed sensor is used for monitoring the speed of the transverse hydraulic vibration excitation assembly, the transverse acceleration sensor is used for monitoring the acceleration of the transverse hydraulic vibration excitation assembly, and the transverse displacement sensor is used for monitoring the displacement of the transverse hydraulic vibration excitation assembly.
Further, the vibration test system further comprises a first acceleration sensor, a second acceleration sensor and a third acceleration sensor, wherein the first acceleration sensor is arranged on the vibration platform to monitor the acceleration of the vibration platform, the second acceleration sensor is arranged on the rigidity platform to monitor the acceleration of the rigidity platform, and the third acceleration sensor is arranged on the suspension frame to monitor the acceleration of the suspension frame.
Furthermore, the vibration test system also comprises a first joint bearing and a second joint bearing, the transverse hydraulic vibration excitation assembly is connected with the rigidity platform through the first joint bearing, the transverse vibration excitation assembly is connected with the ground installation assembly through the second joint bearing, and the transverse hydraulic vibration excitation assembly can rotate around the transverse direction through the first joint bearing and the second joint bearing.
Furthermore, the ground mounting assembly comprises a ground mounting platform and a transverse hydraulic mounting seat, the transverse hydraulic mounting seat is arranged on the ground mounting platform, and the transverse hydraulic vibration excitation assembly is connected with the transverse hydraulic mounting seat.
By applying the technical scheme, the vibration test system of the superconducting magnetic levitation train suspension frame is provided, the vertical actuating force is applied to the vibration platform by the vertical hydraulic actuator, and the transverse actuating force is applied to the vibration platform by the transverse hydraulic actuator, so that the vibration simulation of the superconducting magnet and the suspension frame is realized, higher alternating current does not need to be introduced into a ground coil module, the design difficulty of the coil module is reduced, the heating of the coil is reduced, and the capacity of a motor is reduced; and the hydraulic actuating system is a common vibration device of the vibration table, and can realize accurate vibration combination through a computer, and the hydraulic actuating system has a simple structure and is convenient to control.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of a vibration testing system for a superconducting maglev train levitation chassis provided in accordance with an embodiment of the present invention;
fig. 2 shows a front view of the vibration testing system of the superconducting maglev train suspension provided in fig. 1.
Wherein the figures include the following reference numerals:
10. a ground mounting assembly; 11. a ground mounting platform; 12. a transverse hydraulic mount; 20. a vibration platform; 20a, a mass block accommodating cavity; 30. a vertical hydraulic shock excitation component; 40. a transverse hydraulic vibration excitation component; 50. a stiffness platform; 60. a spring assembly; 70. a top mounting bracket; 71. a top support means; 72. a vertical support leg; 80. a top hydraulic actuator; 90. a top counterweight platform; 100. an air spring loading table; 110. a longitudinal fixing device; 120. a slide rail; 200. a suspension frame; 300. a ground coil side beam; 400. a ground coil module; 500. and (6) electrifying the cable.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 and 2, according to an embodiment of the present invention, there is provided a vibration testing system for a superconducting magnetic levitation train suspension, the vibration testing system comprising a ground mounting assembly 10, a vibration platform 20, a vertical hydraulic excitation assembly 30 and a transverse hydraulic excitation assembly 40, a ground coil side beam 300 and a suspension 200 are disposed on the vibration platform 20, a ground coil module 400 is disposed in the ground coil side beam 300, the ground coil module 400 is connected to an energizing cable 500, the vertical hydraulic excitation assembly 30 comprises a plurality of vertical hydraulic actuators, the plurality of vertical hydraulic actuators are vertically spaced apart on the ground mounting assembly 10, the plurality of vertical hydraulic actuators are configured to apply vertical actuation forces to the vibration platform 20, the transverse hydraulic excitation assembly 40 comprises at least one transverse hydraulic actuator, the transverse hydraulic excitation assembly 40 is laterally disposed on the ground mounting assembly 10, transverse hydraulic actuators are used to apply transverse actuation forces to the shake table 20.
By applying the configuration mode, the vibration test system of the superconducting magnetic suspension train suspension frame is provided, the vertical actuating force is applied to the vibration platform by the vertical hydraulic actuator, and the transverse actuating force is applied to the vibration platform by the transverse hydraulic actuator, so that the vibration simulation of the superconducting magnet and the suspension frame is realized, higher alternating current does not need to be introduced into the ground coil module, the design difficulty of the coil module is reduced, the heating of the coil is reduced, and the capacity of a motor is reduced; and the hydraulic actuating system is a common vibration device of the vibration table, and can realize accurate vibration combination through a computer, and the hydraulic actuating system has a simple structure and is convenient to control.
As a specific embodiment of the present invention, as shown in fig. 1, the vibration testing system includes four vertical hydraulic actuators and four lateral hydraulic actuators, the four vertical hydraulic actuators are disposed at intervals on the ground mounting assembly, the four vertical hydraulic actuators are connected to form a rectangular quadrilateral, when two vertical hydraulic actuators located in front of the rectangular quadrilateral along the length direction of the side beam of the ground coil are in a contracted state (extended state) at the same time, and two hydraulic actuators located in the back are in an extended state (contracted state) at the same time, the suspension frame can be driven to move along the pitch direction, that is, the vibration posture of the suspension frame nod can be simulated; when the two vertical hydraulic actuators positioned on the left side of the rectangular quadrangle along the length direction of the side beam of the ground coil are simultaneously in a contraction state (an extension state), and the two hydraulic actuators positioned on the right side are simultaneously in an extension state (a contraction state), the suspension frame can be driven to move along the transverse rolling direction, namely the vibration posture of the side rolling of the suspension frame is simulated; the vertical hydraulic actuator that is located the upper left corner of rectangle quadrangle and the vertical hydraulic actuator that is located the lower right corner of rectangle quadrangle are in the contraction state (extended state) simultaneously, and the vertical hydraulic actuator that is located the lower left corner of rectangle quadrangle and the vertical hydraulic actuator that is located the upper right corner of rectangle quadrangle are in the extension state (retracted state) simultaneously to can simulate the vibration state that the suspension floats and sink. When the first two transverse hydraulic actuators are in a contraction state (extension state) and the second two transverse hydraulic actuators are in an extension state (contraction state) simultaneously, the suspension frame can be driven to move along the yaw direction, namely the vibration of the oscillating posture of the suspension frame is simulated; when the four transverse hydraulic actuators are in a contraction state (an extension state) at the same time, the vibration characteristics of the transverse posture of the suspension can be simulated.
Further, in the present invention, in order to avoid limiting the vertical vibration of the vibration platform, the vibration testing system may be configured to further include a first joint bearing and a second joint bearing, the transverse hydraulic excitation assembly 40 is connected to the stiffness platform 50 through the first joint bearing, the transverse excitation assembly is connected to the ground mounting assembly 10 through the second joint bearing, and the transverse hydraulic excitation assembly 40 may rotate around the transverse direction through the first joint bearing and the second joint bearing, that is, the transverse hydraulic excitation assembly 40 may realize the nodding motion. In the present invention, the vertical direction is a vertical direction, the longitudinal direction is a length direction of the ground coil side member, which is also a forward direction of the vehicle, and the lateral direction is a direction perpendicular to both the vertical direction and the longitudinal direction.
In addition, in the present invention, in order to facilitate installation of the transverse hydraulic actuator, the ground mounting assembly 10 may be configured to include a ground mounting platform 11 and a transverse hydraulic mounting base 12, the transverse hydraulic mounting base 12 is disposed on the ground mounting platform 11, and the transverse hydraulic excitation assembly 40 is connected to the transverse hydraulic mounting base 12.
Further, in the present invention, in order to realize the simulation of the mass of the track beam, the vibration platform 20 may be configured to have a plurality of mass accommodating cavities 20a, the plurality of mass accommodating cavities 20a are used for mounting the masses, and the vibration testing system realizes the simulation of the mass of the track beam by adjusting the number of the masses.
In the invention, in order to realize the research on the coupled vibration of the train rails and the simulation on the rigidity of the track beam, the vibration test system of the suspension of the superconducting maglev train can be configured to further comprise a rigidity platform 50 and a spring assembly 60, wherein the spring assembly 60 comprises a plurality of springs, the vertical hydraulic excitation assembly 30 is connected with the rigidity platform 50, the rigidity platform 50 is connected with the vibration platform 20 through the spring assembly 60, the transverse hydraulic excitation assembly 40 is connected with the rigidity platform 50, and the vibration test system realizes the simulation on the rigidity of the track beam by adjusting the number of the springs of the spring assembly 60.
As an embodiment of the present invention, as shown in fig. 1, the springs are rigid springs, the lower end of the vibration platform 20 is provided with 4 × 7 rigid spring mounting seats, 8 rigid springs are arranged on 8 of the rigid spring mounting seats, and 8 rigid springs are connected to the rigid platform 50, and the support stiffness of the track beam can be simulated by increasing or decreasing the number of the rigid springs.
Further, in the present invention, in order to simulate the sprung mass of the suspension, the vibration test system of the superconducting maglev train suspension may be configured to further include a top mounting bracket 70, a top hydraulic actuator 80, a top counterweight platform 90 and an air spring loading platform 100, where the top mounting bracket 70 is disposed on the ground mounting assembly 10 and located on the upper portion of the suspension, the top hydraulic actuator 80 is disposed on the top mounting bracket 70, the top counterweight platform 90 is connected to the top hydraulic actuator 80, the top counterweight platform 90 is used for balancing the suspension, the air spring loading platform 100 is disposed on the top counterweight platform 90, and the top hydraulic actuator 80 applies a set force to the air spring of the suspension through the air spring loading platform 100 to simulate the sprung mass of the suspension.
As an embodiment of the present invention, the top mount 70 includes a top support 71 and four vertical support legs 72, the four vertical support legs 72 being disposed on the top support 71, and a top counterweight platform 90 connected to the top support 71 by a top hydraulic actuator 80.
Further, in the present invention, in order to prevent the suspension from moving greatly in the longitudinal direction during the test, the vibration test system may be configured to further include a longitudinal fixing device 110, the longitudinal fixing device 110 is disposed on the vibration platform 20, and the longitudinal fixing device 110 is used to limit the longitudinal displacement of the suspension to achieve the longitudinal positioning of the suspension. As an embodiment of the present invention, a stopper may be used as the longitudinal fixing means 110.
In addition, in the present invention, in order to expand the application range of the test system and adjust the test system according to the size of the object to be tested, the vibration test system can be configured to further include the slide rail 120, and the plurality of vertical hydraulic actuators are disposed on the slide rail 120, so that the vibration test system can perform vibration tests on the suspension rack of a single vehicle and also can perform vibration tests on the suspension rack of a whole vehicle. Through this kind of setting, can be according to the actual size adjustment of measured object each vertical hydraulic actuator's the distribution position, make its bottom that can evenly distributed at the measured object to improve experimental accuracy.
Further, in the invention, in order to obtain the speed, the acceleration and the displacement information in the vibration test process in real time, the vibration test system can be configured to further comprise a vertical speed sensor, a vertical acceleration sensor, a vertical displacement sensor, a transverse speed sensor, a transverse acceleration sensor and a transverse displacement sensor, wherein the vertical speed sensor, the vertical acceleration sensor and the vertical displacement sensor are all arranged in the vertical hydraulic vibration excitation assembly 30, the vertical speed sensor is used for monitoring the speed of the vertical hydraulic vibration excitation assembly 30, the vertical acceleration sensor is used for monitoring the acceleration of the vertical hydraulic vibration excitation assembly 30, and the vertical displacement sensor is used for monitoring the displacement of the vertical hydraulic vibration excitation assembly 30; the transverse speed sensor, the transverse acceleration sensor and the transverse displacement sensor are all arranged in the transverse hydraulic vibration excitation assembly 40, the transverse speed sensor is used for monitoring the speed of the transverse hydraulic vibration excitation assembly 40, the transverse acceleration sensor is used for monitoring the acceleration of the transverse hydraulic vibration excitation assembly 40, and the transverse displacement sensor is used for monitoring the displacement of the transverse hydraulic vibration excitation assembly 40.
In addition, in the present invention, in order to record the vibration acceleration in the vibration test process in real time, so as to study the stability and safety of the suspension under the magnetic track coupling vibration, the vibration test system may be configured to further include a first acceleration sensor, a second acceleration sensor and a third acceleration sensor, the first acceleration sensor is disposed on the vibration platform 20 to monitor the acceleration of the vibration platform 20, the second acceleration sensor is disposed on the stiffness platform 50 to monitor the acceleration of the stiffness platform 50, and the third acceleration sensor is disposed on the suspension to monitor the acceleration of the suspension.
In order to further understand the present invention, the vibration test system of the superconducting maglev train suspension provided by the present invention is described in detail below with reference to fig. 1 and 2.
As shown in fig. 1 and 2, a vibration testing system for a superconducting maglev train suspension is provided according to an embodiment of the present invention, and includes a ground mounting platform 11, a lateral hydraulic mount 12, four vertical hydraulic actuators, four lateral hydraulic actuators, a vibration platform 20, a stiffness platform 50, a spring assembly 60, a top mount 70, a top hydraulic actuator 80, a top counter weight platform 90, a hollow spring loading platform 100, a longitudinal fixture 110, and a slide rail 120.
The vertical hydraulic actuators are fixed on the slide rails 120 of the ground mounting platform 11 through bolts and are symmetrically arranged, so that the application of unbalance loading force is avoided. Four lateral hydraulic actuators are connected to one side of the rigid platform 50 via joint bearings, and the lateral hydraulic actuators can freely rotate around the shaft, thereby avoiding restricting the vertical vibration of the vibration platform 20. The computer is used for controlling the hydraulic actuator, the vertical hydraulic actuator can simulate the vibration postures of the floating frame, the side rolling and the nodding, and the transverse hydraulic actuator can simulate the vibration characteristics of the floating frame under the shaking and transverse postures.
The ground mounting platform 11 is provided with a slide rail and an actuator mounting seat capable of adjusting the vertical hydraulic vibration exciter. The transverse hydraulic actuator and the vertical hydraulic actuator are controlled by a computer, and the action of the hydraulic actuator can be accurately controlled. The lower end of the vertical hydraulic actuator is fixed on an actuator mounting seat which can move along the slide rail. The transverse hydraulic pressure reduction actuators are distributed on one side of the rigidity platform, two ends of each transverse hydraulic pressure actuator are fixed on the rigidity platform and the transverse hydraulic mounting seat 12 on one side through knuckle bearings, and the transverse hydraulic pressure actuators can realize nodding motion (namely motion in the pitching direction) around the knuckle bearings, so that the transverse hydraulic pressure actuators are prevented from being limited to the vertical displacement of the vibration platform.
In order to reduce the mass of the platform as much as possible, the vibration platform 20 and the rigid platform 50 are both hollow frame structures formed by welding I-shaped nonmagnetic steel materials. The ground coil side beam 300 is fixed at the upper end of the vibration platform 20 through a bolt, the ground coil module 400 is externally connected to an equipment power supply through the electrifying cable 500, the electrifying cable 500 can supply power to the ground coil module 400, the ground coil module 400 generates a magnetic field during electrifying, and the electromagnetic force generated between the ground coil module 400 and the superconducting magnets on the suspension frame acts on the magnetic field to realize suspension fixation of the suspension frame. The longitudinal fixing device 110 is fixed above the vibration platform 20 through bolts, and the longitudinal fixing device 110 realizes the longitudinal positioning of the suspension 200 by limiting the longitudinal displacement of the suspension support wheels. The lower end of the vibration platform 20 is provided with 4x7 rigid spring mounting seats, eight rigid springs are connected with the rigid platform 50, and the supporting rigidity of the track beam can be simulated by increasing or decreasing the number of the springs. The vibration platform 20 is provided with a mass accommodating cavity 20a, the mass can be fixed in the mass accommodating cavity 20a of the vibration platform 20 through bolts, and the mass of the vibration platform is adjusted by changing the number of the mass so as to realize accurate simulation of the mass of the track beam.
The vibration test system comprises a vertical speed sensor, a vertical acceleration sensor, a vertical displacement sensor, a transverse speed sensor, a transverse acceleration sensor and a transverse displacement sensor, wherein the vertical speed sensor, the vertical acceleration sensor and the vertical displacement sensor are all arranged in the vertical hydraulic vibration excitation assembly 30, the vertical speed sensor is used for monitoring the speed of the vertical hydraulic vibration excitation assembly 30, the vertical acceleration sensor is used for monitoring the acceleration of the vertical hydraulic vibration excitation assembly 30, and the vertical displacement sensor is used for monitoring the displacement of the vertical hydraulic vibration excitation assembly 30; the transverse speed sensor, the transverse acceleration sensor and the transverse displacement sensor are all arranged in the transverse hydraulic vibration excitation assembly 40, the transverse speed sensor is used for monitoring the speed of the transverse hydraulic vibration excitation assembly 40, the transverse acceleration sensor is used for monitoring the acceleration of the transverse hydraulic vibration excitation assembly 40, and the transverse displacement sensor is used for monitoring the displacement of the transverse hydraulic vibration excitation assembly 40. Meanwhile, acceleration sensors are uniformly arranged on the vibration platform 20, the rigidity platform 50 and the suspension frame 200, vibration acceleration in the vibration test process is recorded, and stability and safety of the suspension frame under magnetic track coupling vibration can be researched through obtained test information.
Top counter-weight platform 90, four vertical support legs 72, one top support 71, four top hydraulic actuators 80, one air spring loading station 100 and one top mating platform 90 are all assembled by bolts. When the top counterweight platform 90 counterweights the suspension frame 200, the empty spring loading platform 100 is located on the empty spring of the suspension frame 200, and the sprung mass of the suspension frame can be accurately simulated by controlling the loading of the actuator through the computer.
In conclusion, the vibration test system of the superconducting magnetic levitation train suspension frame is simple to control and mature in technology, vibration simulation of the superconducting magnet and the suspension frame is achieved by using the hydraulic actuating device, and high alternating current does not need to be introduced into the ground coil module, so that the design difficulty of the ground coil module is reduced, heating of coils is reduced, and the capacity of a motor is reduced; and the hydraulic actuating system is a common vibration device of the vibration table, and can realize accurate vibration combination through a computer, and the hydraulic actuating system has a simple structure and is convenient to control. In addition, the side beam provided with the ground coil module is fixed on the vibration platform, the lower part of the vibration platform is connected with the rigidity platform through the spring assembly, and the simulation of various track beam characteristics can be realized by adjusting the mass block and the number of springs of the vibration platform, so that the test simulation of the magnetic track coupling vibration of the suspension frame of the superconducting maglev train is realized.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative 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 a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a vibration test system of superconductive magnetic levitation train floating frame which characterized in that, vibration test system includes:
a ground mounted assembly (10);
the ground coil module is arranged in the ground coil side beam and is connected with an electrified cable;
the vertical hydraulic vibration excitation assembly (30) comprises a plurality of vertical hydraulic actuators, the plurality of vertical hydraulic actuators are arranged on the ground mounting assembly (10) at intervals along the vertical direction, and the plurality of vertical hydraulic actuators are used for applying vertical actuating force to the vibration platform (20);
the transverse hydraulic vibration excitation assembly (40), the transverse hydraulic vibration excitation assembly (40) includes at least one transverse hydraulic actuator, the transverse hydraulic vibration excitation assembly (40) along transversely setting up on the ground installation component (10), transverse hydraulic actuator is used for to vibration platform (20) applys transversely to do the power.
2. The vibration testing system of the superconducting maglev train suspension of claim 1, wherein the vibration platform (20) has a plurality of mass containment cavities (20a), the plurality of mass containment cavities (20a) being configured to receive masses, the vibration testing system being configured to simulate a rail beam mass by adjusting the number of the masses.
3. The vibration testing system of the superconducting magnetic levitation train suspension as claimed in claim 1 or 2, further comprising a stiffness platform (50) and a spring assembly (60), wherein the spring assembly (60) comprises a plurality of springs, the vertical hydraulic excitation assembly (30) is connected to the stiffness platform (50), the stiffness platform (50) is connected to the vibration platform (20) through the spring assembly (60), the transverse hydraulic excitation assembly (40) is connected to the stiffness platform (50), and the vibration testing system realizes the simulation of the stiffness of the track beam by adjusting the number of springs of the spring assembly (60).
4. The vibration testing system of a superconducting maglev train levitation chassis of claim 3, wherein, the vibration test system of the superconducting maglev train suspension frame also comprises a top mounting frame (70), a top hydraulic actuator (80), a top counterweight platform (90) and an air spring loading platform (100), the top mounting bracket (70) is arranged on the ground mounting component (10) and is positioned at the upper part of the suspension bracket, the top hydraulic actuator (80) is disposed on the top mount (70), the top counter weight platform (90) is connected to the top hydraulic actuator (80), the top counterweight platform (90) is used for balancing the suspension frame, the air spring loading platform (100) is arranged on the top counterweight platform (90), the top hydraulic actuator (80) applies a set force to the air spring of the suspension frame through the air spring loading table (100) to simulate the sprung mass of the suspension frame.
5. The vibration testing system of the superconducting magnetic levitation train levitation chassis as recited in any one of claims 1-4, further comprising a longitudinal fixture (110), wherein the longitudinal fixture (110) is disposed on the vibration platform (20), and wherein the longitudinal fixture (110) is configured to limit longitudinal displacement of the levitation chassis to achieve longitudinal positioning of the levitation chassis.
6. The vibration testing system of the superconducting maglev train suspension of claim 5, further comprising a slide rail (120), the plurality of vertical hydraulic actuators being disposed on the slide rail (120).
7. The vibration test system of the superconducting magnetic levitation train suspension frame as claimed in claim 1, further comprising a vertical velocity sensor, a vertical acceleration sensor, a vertical displacement sensor, a lateral velocity sensor, a lateral acceleration sensor and a lateral displacement sensor, wherein the vertical velocity sensor, the vertical acceleration sensor and the vertical displacement sensor are all arranged in the vertical hydraulic shock excitation assembly (30), the vertical velocity sensor is used for monitoring the velocity of the vertical hydraulic shock excitation assembly (30), the vertical acceleration sensor is used for monitoring the acceleration of the vertical hydraulic shock excitation assembly (30), and the vertical displacement sensor is used for monitoring the displacement of the vertical hydraulic shock excitation assembly (30); the transverse speed sensor, the transverse acceleration sensor and the transverse displacement sensor are all arranged in the transverse hydraulic vibration excitation assembly (40), the transverse speed sensor is used for monitoring the speed of the transverse hydraulic vibration excitation assembly (40), the transverse acceleration sensor is used for monitoring the acceleration of the transverse hydraulic vibration excitation assembly (40), and the transverse displacement sensor is used for monitoring the displacement of the transverse hydraulic vibration excitation assembly (40).
8. The vibration testing system of a superconducting magnetic levitation train suspension of claim 7, further comprising a first acceleration sensor disposed on the vibration platform (20) to monitor acceleration of the vibration platform (20), a second acceleration sensor disposed on the stiffness platform (50) to monitor acceleration of the stiffness platform (50), and a third acceleration sensor disposed on the suspension to monitor acceleration of the suspension.
9. The vibration testing system of the superconducting maglev train suspension of claim 2, further comprising a first knuckle bearing and a second knuckle bearing, wherein the lateral hydraulic excitation assembly (40) is connected to the stiffness platform (50) via the first knuckle bearing, wherein the lateral excitation assembly is connected to the ground mount assembly (10) via the second knuckle bearing, and wherein the lateral hydraulic excitation assembly (40) is rotatable in a lateral direction via the first knuckle bearing and the second knuckle bearing.
10. The vibration testing system of the superconducting maglev train suspension of claim 9, wherein the ground mounting assembly (10) comprises a ground mounting platform (11) and a transverse hydraulic mount (12), the transverse hydraulic mount (12) being disposed on the ground mounting platform (11), the transverse hydraulic excitation assembly (40) being connected to the transverse hydraulic mount (12).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117387894A (en) * | 2023-12-13 | 2024-01-12 | 天津航天瑞莱科技有限公司 | Catapult-assisted take-off and arresting impact test device |
| WO2024050991A1 (en) * | 2022-09-05 | 2024-03-14 | 中车长春轨道客车股份有限公司 | Electric magnetic-levitation magnet vibration and impact test apparatus |
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- 2021-01-19 CN CN202110070687.6A patent/CN114812986A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024050991A1 (en) * | 2022-09-05 | 2024-03-14 | 中车长春轨道客车股份有限公司 | Electric magnetic-levitation magnet vibration and impact test apparatus |
| CN117387894A (en) * | 2023-12-13 | 2024-01-12 | 天津航天瑞莱科技有限公司 | Catapult-assisted take-off and arresting impact test device |
| CN117387894B (en) * | 2023-12-13 | 2024-02-09 | 天津航天瑞莱科技有限公司 | Catapult-assisted take-off and arresting impact test device |
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