CN109682563A - Five degree of freedom becomes cell type electromagnetic vibration test platform - Google Patents

Five degree of freedom becomes cell type electromagnetic vibration test platform Download PDF

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Publication number
CN109682563A
CN109682563A CN201910113046.7A CN201910113046A CN109682563A CN 109682563 A CN109682563 A CN 109682563A CN 201910113046 A CN201910113046 A CN 201910113046A CN 109682563 A CN109682563 A CN 109682563A
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China
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level
moving platform
exciting device
freedom
degree
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CN201910113046.7A
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CN109682563B (en
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王成军
段浩
胡海霞
沈豫浙
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Anhui University of Science and Technology
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Anhui University of Science and Technology
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Priority to CN201910113046.7A priority Critical patent/CN109682563B/en
Priority to PCT/CN2019/083399 priority patent/WO2020164185A1/en
Publication of CN109682563A publication Critical patent/CN109682563A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table
    • G01M7/06Multidirectional test stands
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

Become cell type electromagnetic vibration test platform the invention discloses a kind of five degree of freedom, including support base, three-degree of freedom flexible bracket, X to exciting device, Y-direction exciting device lifting device, Z-direction exciting device, level-one moving platform, swing exciting device, slewing equipment and test table.X is respectively used to generate the of reciprocating vibration of tri- directions X, Y, Z to exciting device, Y-direction exciting device lifting device, Z-direction exciting device, swings exciting device, slewing equipment is respectively used to driving test table and generates reciprocally swinging and rotation.The vibration of five freedom degrees at most can be achieved in the present invention, not only vibrational degrees of freedom is more, each vibrational degrees of freedom Independent adjustable, and reciprocally swinging direction and the adjustable angle of test table, the change born of the same parents for realizing freedom degree and structure can meet more vibration-testing requirements of one's work, also have vibration frequency high, it is compact-sized, the advantages that equipment occupation space is small, production cost is low, highly-safe, simple and convenient operation and maintenance.

Description

Five degree of freedom becomes cell type electromagnetic vibration test platform
Technical field
The invention belongs to dynamic environmental test equipment technical field, in particular to a kind of five degree of freedom becomes cell type electric and magnetic oscillation Testing stand.
Background technique
Vibration mechine is mainly the various punchings that analog equipment is subjected in manufacture, handling, assembling transport and use process Vibration environment is hit, to determining product to the adaptability of various ambient vibrations, and evaluates the integrity of its constructional device, for detection The quality of product provides foundation.Vibration mechine needs make a series of controllable vibration simulations in vibration experiment, and test produces Whether product can bear transport or the test of vibration environment factor in life cycle, also can determine that vibration mechine design and function Requirement standard.Vibration mechine is widely used in aerospace, locomotive, power electronics, Light Electrical, petrochemical industry, toy Etc. all trades and professions research, exploitation, quality control and manufacture.It is right with the raising that the difference and fidelity of simulation of use environment require The requirement of the vibrational degrees of freedom of testing stand is higher and higher, and there are three multi-freedom-degree vibration testing stands more than vibrational degrees of freedom for tool Demand is more and more.
Existing vibration testing device is divided into mechanical vibration test-bed and electromagnetic vibration test platform, but existing mechanical oscillation Although testing stand structure is simple, cost is relatively low, there are mode of vibrations it is single, vibration frequency is low, acceleration is small the defects of, cannot Different vibration frequencies is used simultaneously, and it is not strong to the security protection of vibration device, all to vibration mechine and operator Certain security threat is constituted, while also often can influence test effect because vibratory impulse power is difficult to control.
Electromagnetic vibration generator system is designed according to electromagnetic induction principle, and electromagnetic vibration test platform is due to its frequency of use range It is wide, waveform distortion is small has become widely used dynamic environmental test equipment.It is tested at present using extensive electromagnetic vibration The frequency range maximum of platform is up to 2000Hz, wide dynamic range, it is easy to accomplish it is automatically or manually controlled, Acceleration pulse is good, It is suitble to generate random wave, biggish acceleration can be obtained.
For some technical problems present in existing vibration rig, existing patent document proposes some solution party Case.Such as application No. is 201820909519.5 Chinese patents to disclose a kind of three shaft vibration fatigue test boards, from pedestal, X to Workbench, Y-direction workbench, Z-direction workbench are constituted, and shake table use fluid pressure type actuator for power, load height, by X to work Make platform, Y-direction workbench, Z-direction workbench individually to vibrate or three-shaft linkage, more kinds of road conditions scenes can be simulated, the disadvantage is that vibration Frequency is low, and hydraulic system is easy to produce leakage.Application No. is 201820196523.1 Chinese patents to disclose a kind of mechanical vibration Dynamic test platform is made of components such as headstock, driving gear, connector and springs, can use different vibration frequencies simultaneously, But excited frequency is lower, and adjustable range is small.Application No. is 201810767591.3 Chinese patents to disclose a kind of vibration active Control experiment platform is used including bottom plate, two optical axises, the portal trestle between two optical axises and adjustable electric machine vibration device Inertia vibration generator can only realize that one direction is vibrated, can not simulate the vibratory impulse under complex environment.Application No. is 201710127751.3 Chinese patent discloses a kind of random vibration formula testing stand, and shaking platform is by spring supporting in bracket On, exciting device is respectively set on tri- directions X, Y, Z of shaking platform, and shaking platform is acted on by transmission rod and is generated Random vibration can only generate three vibrationals degrees of freedom, and the vibration controllability in all directions is poor.Application No. is The Chinese patent of 201810013953.X discloses a kind of high-frequency excitation earthing or grounding means testing stand, core mechanical load machine Structure is made of gantry frame assembly, earthing or grounding means chamber, high-frequency electromagnetic vibration excitor and suspension type driving motor system synthesis, is adopted With high-frequency electromagnetic vibration excitor exciting, but vibrational degrees of freedom is very few.Existing Three Degree Of Freedom electromagnetic vibration test platform mostly uses entirety Series-mode frame, the vibration in tri- directions X, Y, Z respectively by it is lower and on three parts realize, the not only height gauge of testing stand It is very little larger, and energy consumption is high.In addition, the supporting way of existing electromagnetic vibration test platform mostly uses cylindrical spring support, suspension branch The supporting way such as support or straight panel spring supporting.
That there are vibrationals degrees of freedom is few for existing electromagnetic vibration test platform, supporting way is unreasonable, and direction of vibration and parameter are controllable Property the difference and technical problems such as energy consumption height, with the continuous improvement that vibration-testing object requires vibration mechine vibration parameters, Existing vibration mechine has been difficult to meet the needs of product vibration-testing and other related multi DOF excitation researchs, compels to be essential Developing a kind of has that test load is big, vibrational degrees of freedom is more, vibration frequency is high, all directions vibration uncoupling, direction of vibration and ginseng The high multiple degrees of freedom electromagnetic vibration test platform of number controllability.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of five degree of freedom to become cell type electromagnetic vibration test Platform, can be used in that heavy load, vibrational degrees of freedom are more, vibration frequency is high, all directions vibration uncoupling, direction of vibration and parameter controllability High multiple degrees of freedom high-frequency vibration test and research, improve the accuracy rate and reliability of vibration-testing, reduce equipment and research and development at This, can overcome the deficiencies of existing technologies.
The technical problems to be solved by the invention are realized using following technical scheme.
A kind of five degree of freedom becomes cell type electromagnetic vibration test platform, including support base, three-degree of freedom flexible bracket, X are to exciting Device, Z-direction exciting device, level-one moving platform, swings exciting device, slewing equipment and test table at Y-direction exciting device.Its In, the support base includes pedestal, X to electromagnet stent and Y-direction electromagnet stent, is used to support and to install Three Degree Of Freedom soft Property bracket, X are to exciting device, Y-direction exciting device and Z-direction exciting device.X has to electromagnet stent and Y-direction electromagnet stent Two groups, and be symmetrically arranged at the side of pedestal, X to the bottom of electromagnet stent and Y-direction electromagnet stent with pedestal phase It is connected;Three-degree of freedom flexible bracket there are four being set between pedestal and level-one moving platform, for installing and supporting level-one moving platform, And there is the ability for generating flexible deformation to, Y-direction and Z-direction along X, the lower end and bottom of the three-degree of freedom flexible bracket simultaneously Seat is connected, and the upper end and level-one moving platform are connected.The X to exciting device between level-one moving platform and support base, institute The X stated to the quantity of exciting device be two, and two groups of X to exciting device be arranged symmetrically in X above pedestal to two sides, for driving Dynamic level-one moving platform and test table generate X to of reciprocating vibration.The Y-direction exciting device is located at level-one moving platform and support Between seat, the quantity of the Y-direction exciting device is two, and two groups of Y-direction exciting devices are arranged symmetrically in two of Y-direction above pedestal Side, it is of reciprocating vibration for driving level-one moving platform and test table to generate Y-direction.The Z-direction exciting device be located at pedestal with Between level-one moving platform, including Z-direction electromagnet and Z-direction adsorption support, for driving level-one moving platform and test table to generate Z To of reciprocating vibration.Wherein, the bottom of the Z-direction electromagnet is fixedly mounted on the center above pedestal, and the Z-direction is inhaled Attached bracket is located at the surface of Z-direction electromagnet, and its top is fixedly mounted on the lower section of level-one moving platform.The swing exciting Device is between level-one moving platform and slewing equipment, for driving test table to generate around being parallel to X to the reciprocal of axis It swings.The lower end of the slewing equipment, which is fixedly mounted on, to be swung on exciting device, for driving test table to rotate, in turn Adjust the opposite swaying direction of test table when swinging exciting device work.The test work being fixedly mounted at the top of slewing equipment It is the final output end that the present invention generates vibration as platform, needs to carry out the article of vibration-testing for fixed and installation.
The swing exciting device is mounted on the top of level-one moving platform, including second level moving platform, supporting hinges, locking Device swings resetting apparatus and oscillating electromagnetic iron.Wherein, motor mounting hole and transmission shaft are equipped on the second level moving platform Mounting hole;Two oscillating electromagnetic iron are arranged in parallel in the upper side of level-one moving platform, and its bottom and level-one moving platform are mutually solid Even, for driving the axis reciprocally swinging of second level moving platform and test table around supporting hinges;The number of the supporting hinges Amount is two, and two supporting hinges coaxial-symmetricals are arranged between second level moving platform and level-one moving platform, and are respectively positioned on oscillating electromagnetic The side of iron phase neighbour, the upper and lower ends of supporting hinges are fixedly connected with second level moving platform, level-one moving platform respectively;The locking dress The upper and lower ends set are fixedly connected with second level moving platform, level-one moving platform respectively, and are located among the opposite side of oscillating electromagnetic iron Position, for limit perhaps can second level moving platform and test table reciprocally swinging;Two swing resetting apparatuses are arranged symmetrically In the two sides of locking device, reset force is provided when driving second level moving platform and test table reciprocally swinging for oscillating electromagnetic iron, The upper end of the swing resetting apparatus is fixedly connected with by screw and second level moving platform, and lower end and the level-one for swinging resetting apparatus are dynamic Platform is connected by screw thread.
The three-degree of freedom flexible bracket deforms leaf spring and X to deformation leaf spring including rigid lower supporter, Y-direction.Wherein, institute The lower end for the rigid lower supporter stated is fixedly mounted on pedestal, for fixing and installing Y-direction deformation leaf spring;The Y-direction deformation The lower end of leaf spring and the upper end of rigid lower supporter are fixedly connected with, and the upper end of the Y-direction deformation leaf spring and X are to the lower end of deformation leaf spring It is fixedly connected with, the X is connected with level-one moving platform by screw to the upper end of deformation leaf spring.The Y-direction deformation leaf spring is in Y Level-one moving platform support base opposite with test table can be made to generate Y-direction under the action of to exciting device to move back and forth, the X It can make the support base generation X yearning opposite with test table of level-one moving platform under the action of X is to exciting device to deformation leaf spring Multiple mobile, Y-direction deforms leaf spring and X can also make level-one moving platform and test work to deformation leaf spring under the action of Z-direction exciting device Make platform and generates Z-direction reciprocating movement with respect to support base.
Preferably, the lower end of Y-direction deformation leaf spring is connected with rigid lower supporter by rivet hot or screw, and is being connect For surrounding by Friction Stir Welding mode reinforcement, the upper end of the Y-direction deformation leaf spring and the lower end of X to deformation leaf spring are logical at head It crosses rivet hot and is connected with the mode that agitating friction welds dual connection.
The X to exciting device include X to adsorption support, X to electromagnet, X to resetting apparatus and X to reset cradle. Wherein, the X is connected to the top of adsorption support and level-one moving platform, and the X is fixedly mounted on X to electromagnetism to electromagnet The side of retort stand, for adsorbing X to adsorption support, for the X of level-one moving platform and test table to it is of reciprocating vibration provide it is dynamic Power;The X is connected with X to adsorption support, X to reset cradle respectively to the both ends of resetting apparatus, is level-one moving platform and survey Try workbench X to reset provide power.The Y-direction exciting device includes that Y-direction adsorption support, Y-direction electromagnet, Y-direction are multiple Position device and Y-direction reset cradle.Wherein, the top of the Y-direction adsorption support and level-one moving platform are connected, the Y-direction electricity Magnet is fixedly mounted on the side of Y-direction electromagnet stent, is level-one moving platform and test job for adsorbing Y-direction adsorption support The Y-direction of platform offer power of reciprocating vibration;The both ends of the Y-direction resetting apparatus respectively with Y-direction adsorption support, Y-direction reset cradle It is connected, provides power in the reset of Y-direction for level-one moving platform and test table.
The X to resetting apparatus include X to double Hooke's joint, X to reset spring, X to adjusting screw rod.Wherein, the X To double Hooke's joint for connecting X to reset spring and X to adsorption support, and X is made to resetting apparatus to there is Y-direction and Z-direction to move certainly By spending, the X is connected to adsorption support by screw to one end of double Hooke's joint with X, and the other end and X are to reset spring It is connected by screw;The X is used to provide for X to the X of adsorption support and level-one moving platform to reset dynamic to reset spring Power;The X is connected to reset spring by bolt to one end of adjusting screw rod with X, and the X is to the another of adjusting screw rod End is connected to reset cradle by bolt with X.The Y-direction resetting apparatus includes Y-direction double Hooke's joint, Y-direction reset spring, Y To adjusting screw rod, the Y-direction double Hooke's joint makes Y-direction resetting apparatus for connecting Y-direction reset spring and Y-direction adsorption support It is connected to one end with Z-direction freedom of motion, the Y-direction double Hooke's joint with Y-direction adsorption support by screw with X, The other end is connected with Y-direction reset spring by screw;The Y-direction reset spring is used to move for Y-direction adsorption support and level-one The Y-direction of platform, which resets, provides power;One end of the Y-direction adjusting screw rod is connected with Y-direction reset spring by bolt, described The other end of Y-direction adjusting screw rod be connected with Y-direction reset cradle by bolt.The X is to reset cradle and the Y-direction The bottom of reset cradle is connected by welding or bolted mode with pedestal.
The locking device includes locking support, left clamping jaw, right clamping jaw, guide post, driving lead screw and T-type collet.Wherein, The bottom of the locking support and level-one moving platform are connected, and are respectively arranged on the left side and the right side a left side in the locking support lower end Ear mount and right ear base, for installing guide post and driving lead screw;The guide post has two, and its both ends is arranged symmetrically and is mounted on a left side In ear mount and right ear base;The driving lead screw is left and right double-screw thread lead screw, is clamped for driving left clamping jaw, right clamping jaw to realize Or unclamp, it is equipped with left hand thread on half section of a left side for the driving lead screw, right-handed thread is equipped with for half section on the right side of driving lead screw, drives The both ends of dynamic lead screw are separately mounted in left ear base and right ear base, and are connected by bearing with left ear base, right ear base, in institute The both ends for the driving lead screw stated are additionally provided with adjusting knob;Left clamping jaw, right clamping jaw are arranged in the two sides of T-type collet, for clamping T-type Collet, lead screw passes through left-hand thread respectively, right-hand thread is connected for left clamping jaw, right clamping jaw and driving, and left clamping jaw, right clamping jaw and guide post are equal It is connected by cylindrical pair;The top of the T-type collet and second level moving platform are connected.In the left and right two of the T-type collet Side is equipped with card slot, is equipped with the latch matched with card slot on the inside of left clamping jaw, right clamping jaw.
The swing resetting apparatus includes swinging reset spring and oscillation adjustment screw rod.Wherein, the swing resets The upper end of spring is fixed by screws in the lower section of second level moving platform, dynamic for providing for reset of the second level moving platform when swinging The upper end of power, the lower end and oscillation adjustment screw rod that swing reset spring is connected;The lower end of the oscillation adjustment screw rod and level-one Moving platform is connected by screw thread, for adjusting return spring force and amplitude of fluctuation of the second level moving platform when swinging.
The slewing equipment includes revolving bed, revolving body, ring gear, driving gear, transmission shaft, transmission gear, active Gear and rotary motor.Wherein, the lower end of the revolving bed is fixedly mounted on the top of second level moving platform by screw, is used for Support and installation revolving body, the upper end of the revolving body is connected with test table by screw, the revolving body with It is connected between revolving bed by spring bearing group.The ring gear is fixedly mounted on the inside of revolving body, institute by screw The driving gear stated is fixedly mounted on the upper end of transmission shaft, and keeps internal messing with ring gear, for driving ring gear and revolution Body rotation.The transmission gear is fixedly mounted on the lower end of transmission shaft, and the transmission shaft is placed in the transmission of second level moving platform In shaft mounting hole, and it is connected with second level moving platform by bearing.The rotary motor is placed in the motor peace of second level moving platform It fills in hole, and is connected with second level moving platform by screw, provide power for the rotation for driving gear, and then drive revolution Body is rotated relative to revolving bed.The driving gear is fixedly mounted on the output shaft of rotary motor, and is kept with transmission gear External toothing, for driving transmission gear and transmission shaft to rotate;The output shaft of the driving gear and rotary motor passes through flat key It is connected, is additionally provided with shaft end ring, and the output shaft fixed connection with rotary motor in the output the tip of the axis of rotary motor, rises axial The effect of positioning.
Support base, three-degree of freedom flexible bracket, X to exciting device, Y-direction exciting device and swing exciting device outside Equipped with outer casing, handle is additionally provided at left and right sides of the outer casing.The present invention is additionally provided with controller, the controller It is connected with X to electromagnet, Y-direction electromagnet, Z-direction electromagnet, oscillating electromagnetic iron and rotary motor by power cable, signal cable It connects.
Preferably, the spring bearing group described in above-mentioned slewing equipment, including a transverse bearing and two thrust shafts It holds, and two thrust bearings are arranged in the upper and lower ends of transverse bearing, the transverse bearing is radial using cylindrical roller Bearing or radial compound bearing, thrust bearing use cylindrical roller thrust bearing or axial composite-rotor bearing.
Preferably, the rotary motor described in above-mentioned slewing equipment using servo deceleration motor or hydraulic servo motor or Air servo-motor.
In use, tested article is fixedly mounted on test table, this is determined according to vibration-testing need of work The vibrational degrees of freedom of invention and the vibration mode specifically executed, and then select X to exciting device, Y-direction exciting device, Z-direction exciting Device, the specific work in combination mode for swinging exciting device and slewing equipment.Test table is in X to exciting device, Y-direction exciting The linear vibration in tri- directions X, Y, Z is realized under the action of device, Z-direction exciting device respectively, unclamps locking device, starting Oscillating electromagnetic iron can realize test table around the reciprocally swinging of supporting hinges axis.X, Y, Z tri- at most can be achieved in the present invention The linear vibration in direction and around being parallel to reciprocally swinging of the X to axis, and around being parallel to rotation totally five of Z-direction axis Freedom of motion, test table can adjust in real time with respect to the reciprocally swinging of support base under the action of slewing equipment.When being not required to When generating swing, second level moving platform and level-one moving platform can be locked by locking device.Each vibration of test table Freedom degree is relatively independent adjustable, has full decoupled property.
The invention has the advantages that compared with prior art, not only vibrational degrees of freedom is more by the present invention, each vibration is freely Spend Independent adjustable, it is non-interference, and the reciprocally swinging direction of test table and adjustable angle, realize freedom of motion and The change born of the same parents of structure can meet more vibration-testing requirements of one's work;The present invention also has vibration frequency height, compact-sized, if It is standby occupy little space, the advantages that production cost is low, highly-safe, simple and convenient operation and maintenance, can overcome the deficiencies of existing technologies.
Detailed description of the invention
Fig. 1 is general structure schematic diagram of the invention;
Fig. 2 is main structure of the invention (without slewing equipment and test table) schematic diagram;
Assembly relation of the Fig. 3 between level-one moving platform and three-degree of freedom flexible bracket, Z-direction exciting device of the invention shows It is intended to;
Fig. 4 is the structural schematic diagram of slewing equipment of the invention;
Fig. 5 is the structural schematic diagram of X of the invention to exciting device;
Fig. 6 is the structural schematic diagram of Y-direction exciting device of the invention;
Fig. 7 is the structural schematic diagram of locking device of the invention;
Fig. 8 is the structural schematic diagram that lead screw is driven in locking device of the invention;
Fig. 9 is the structural schematic diagram of swing resetting apparatus of the invention;
Figure 10 is working state schematic representation of the invention.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for realizing the present invention are easy to understand, below It in conjunction with specific embodiments and illustrates, the present invention is further explained.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Figure 10, a kind of five degree of freedom change cell type electromagnetic vibration test platform, including support base 1, Three-degree of freedom flexible bracket 2, X to exciting device 3, Y-direction exciting device 4, Z-direction exciting device 5, level-one moving platform 6, swing exciting Device 7, slewing equipment 8 and test table 9.Wherein, the support base 1 includes pedestal 11, X to electromagnet stent 12 and Y To electromagnet stent 13, three-degree of freedom flexible bracket 2, X are used to support and installed to exciting device 3, Y-direction exciting device 4 and Z-direction Exciting device 5.X has two groups to electromagnet stent 12 and Y-direction electromagnet stent 13, and is symmetrically arranged at the side of pedestal 11 Face, X are fixedly connected with pedestal 11 to the bottom of electromagnet stent 12 and Y-direction electromagnet stent 13;It is dynamic flat in pedestal 11 and level-one Three-degree of freedom flexible bracket 2 there are four setting between platform 6, for installing and supporting level-one moving platform 6, and the Three Degree Of Freedom is soft Property bracket 2 there is the ability for generating flexible deformation to, Y-direction and Z-direction along X simultaneously, under the three-degree of freedom flexible bracket 2 End is fixedly connected with by way of being connect with pedestal 11 welding or screw, and the upper end is connected with level-one moving platform 6 by screw.Institute The X stated to exciting device 3 between level-one moving platform 6 and support base 1, the X to the quantity of exciting device 3 be two, and Two groups of X to exciting device 3 be arranged symmetrically in 11 top X of pedestal to two sides, for driving level-one moving platform 6 and test table 9 generate X to of reciprocating vibration.The Y-direction exciting device 4 is between level-one moving platform 6 and support base 1, the Y-direction exciting The quantity of device 4 is two, and two groups of Y-direction exciting devices 4 are arranged symmetrically in the two sides of 11 top Y-direction of pedestal, for driving level-one It is of reciprocating vibration that moving platform 6 and test table 9 generate Y-direction.The Z-direction exciting device 5 is located at pedestal 11 and level-one moving platform 6 Between, including Z-direction electromagnet 51 and Z-direction adsorption support 52, it is past for driving level-one moving platform 6 and test table 9 to generate Z-direction Multiplex vibration.Wherein, the bottom of the Z-direction electromagnet 51 is fixedly mounted on the center of 11 top of pedestal, and the Z-direction is inhaled Attached bracket 52 is located at the surface of Z-direction electromagnet 51, and its top is fixedly mounted on the lower section of level-one moving platform 6.The pendulum Dynamic exciting device 7 positioned at level-one moving platform 6 and slewing equipment 8 between, for drive the generation of test table 9 around be parallel to X to The reciprocally swinging of axis.The lower end of the slewing equipment 8, which is fixedly mounted on, to be swung on exciting device 7, for driving test work Make the rotation of platform 9, and then adjusts the opposite swaying direction for swinging test table 9 when exciting device 7 works.It is fixedly mounted on revolution The test table 9 at 8 top of device is the final output end that the present invention generates vibration, is vibrated for fixed and installation The article of test.
As shown in Figure 1, Figure 2, shown in Fig. 9 and Figure 10, the swing exciting device 7 is mounted on the top of level-one moving platform 6, packet It includes second level moving platform 71, supporting hinges 72, locking device 73, swing resetting apparatus 74 and oscillating electromagnetic iron 75.Wherein, described Second level moving platform 71 be equipped with motor mounting hole 711 and transmission shaft mounting hole 712;Two oscillating electromagnetic iron 75 are arranged in parallel in The upper side of level-one moving platform 6, and its bottom and level-one moving platform 6 are connected, for driving second level moving platform 71 and test work Make axis reciprocally swinging of the platform 9 around supporting hinges 72;The quantity of the supporting hinges 72 is two, and two supporting hinges 72 are coaxial It is arranged symmetrically between second level moving platform 71 and level-one moving platform 6, and is respectively positioned on the adjacent side of oscillating electromagnetic iron 75, support hinge The upper and lower ends of chain 72 are connected with second level moving platform 71, level-one moving platform 6 respectively;The upper and lower ends of the locking device 73 point It is not fixedly connected with second level moving platform 71, level-one moving platform 6, and is located at the opposite side middle position of oscillating electromagnetic iron 75, be used for Limitation perhaps can second level moving platform 71 and test table 9 reciprocally swinging;Two swing resetting apparatuses 74 are arranged symmetrically in lock The two sides of tight device 73, provide reset when driving second level moving platform 71 and 9 reciprocally swinging of test table for oscillating electromagnetic iron 75 The upper end of power, the swing resetting apparatus 74 is fixedly connected with by screw with second level moving platform 71, is swung under resetting apparatus 74 End is connected with level-one moving platform 6 by screw thread.
As shown in Figure 1, Figure 2 and Figure 3, the three-degree of freedom flexible bracket 2 includes rigid lower supporter 21, Y-direction deformed plate Spring 22 and X are to deformation leaf spring 23.Wherein, the lower end of the rigid lower supporter 21 is fixed by way of welding or screw connection Installation deforms leaf spring 22 on the pedestal 11, for fixing and installing Y-direction;The lower end and rigid bottom of the Y-direction deformation leaf spring 22 The upper end of bracket 21 is connected, and the upper end of the Y-direction deformation leaf spring 22 and X are connected to the lower end of deformation leaf spring 23, the X to The upper end of deformation leaf spring 23 is connected with level-one moving platform 6 by screw.The Y-direction deformation leaf spring 22 is in Y-direction exciting device 4 Under the action of level-one moving platform 6 and test table 9 can be made to generate Y-direction with respect to support base 1 move back and forth, the X is to deformation Leaf spring 23 can make level-one moving platform 6 and test table 9 generate X with respect to support base 1 to yearn under the action of X is to exciting device 3 It is multiple mobile, Y-direction deformation leaf spring 22 and X to deformation leaf spring 23 can also make under the action of Z-direction exciting device 5 level-one moving platform 6 with Test table 9 generates Z-direction with respect to support base 1 and moves back and forth.
As shown in Figure 1, Figure 2 and Figure 3, the lower end of the described Y-direction deformation leaf spring 22 and rigid lower supporter 21 by rivet hot or Screw is connected, and in joint surrounding by Friction Stir Welding mode reinforcement, the upper end of the Y-direction deformation leaf spring 22 with X is connected in such a way that rivet hot welds dual connection with agitating friction to the lower end of deformation leaf spring 23.
As shown in Figure 1, Figure 2 and shown in Fig. 5, the X is to exciting device 3 including X to adsorption support 31, X to electromagnet 32, X To resetting apparatus 33 and X to reset cradle 34.Wherein, the X passes through weldering to the top of adsorption support 31 and level-one moving platform 6 It connects or bolted mode is fixedly connected with, the X is fixedly mounted on X to the side of electromagnet stent 12 to electromagnet 32, uses In absorption X to adsorption support 31, the X for level-one moving platform 6 and test table 9 provides power to of reciprocating vibration;The X to The both ends of resetting apparatus 33 are connected with X to adsorption support 31, X to reset cradle 34 respectively, are level-one moving platform 6 and test job Platform 9 X to reset provide power.
As shown in figs. 1,2 and 6, the Y-direction exciting device 4 includes Y-direction adsorption support 41, Y-direction electromagnet 42, Y To resetting apparatus 43 and Y-direction reset cradle 44.Wherein, the top of the Y-direction adsorption support 41 and level-one moving platform 6 pass through weldering It connects or bolted mode is fixedly connected with, the Y-direction electromagnet 42 is fixedly mounted on the side of Y-direction electromagnet stent 13, uses In absorption Y-direction adsorption support 41, of reciprocating vibration power is provided for the Y-direction of level-one moving platform 6 and test table 9;The Y-direction The both ends of resetting apparatus 43 are fixedly connected with Y-direction adsorption support 41, Y-direction reset cradle 44 respectively, are level-one moving platform 6 and test work Make platform 9 and provides power in the reset of Y-direction.
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, the X is to the bottom of reset cradle 34 and the Y-direction reset cradle 44 It is connected by welding or bolted mode with pedestal 11.
As shown in Figure 1, Figure 2 and shown in Fig. 5, the X is to resetting apparatus 33 including X to double Hooke's joint 331, X to reset spring 332, X is to adjusting screw rod 333.Wherein, the X is propped up for connecting X to reset spring 332 and X to absorption to double Hooke's joint 331 Frame 31, and make X to resetting apparatus 33 have Y-direction and Z-direction freedom of motion, one end from the X to double Hooke's joint 331 and X to Adsorption support 31 is connected by screw, and the other end is connected to reset spring 332 by screw with X;The X is to reset Spring 332 is used to provide power to reset to the X of adsorption support 31 and level-one moving platform 6 for X;The X is to adjusting screw rod 333 One end be connected to reset spring 332 by bolt with X, the other end from the X to adjusting screw rod 333 and X to reset branch Frame 34 is connected by bolt.
As shown in figs. 1,2 and 6, the Y-direction resetting apparatus includes Y-direction double Hooke's joint, Y-direction reset spring, Y-direction tune Screw rod is saved, the Y-direction double Hooke's joint 431 resets Y-direction for connecting Y-direction reset spring 432 and Y-direction adsorption support 41 There is device 43 X to pass through spiral shell to one end and Y-direction adsorption support 41 with Z-direction freedom of motion, the Y-direction double Hooke's joint 431 Nail is connected, and the other end is connected with Y-direction reset spring 432 by screw;The Y-direction reset spring 432 is used to be Y-direction The Y-direction of adsorption support 41 and level-one moving platform 6, which resets, provides power;One end of the Y-direction adjusting screw rod 433 and Y-direction reset Spring 432 is connected by bolt, and the other end of the Y-direction adjusting screw rod 433 is connected with Y-direction reset cradle 44 by bolt It connects.
As shown in figs. 1,7 and 8, the locking device 73 includes locking support 731, left clamping jaw 732, right clamping jaw 733, guide post 734, driving lead screw 735 and T-type collet 736.Wherein, the bottom of the locking support 731 and level-one moving platform 6 It is connected by screw, is respectively arranged on the left side and the right side left ear base 7311 and right ear base in 731 lower end of locking support 7312, for installing guide post 734 and driving lead screw 735;The guide post 734 has two, and its both ends is arranged symmetrically and is mounted on In left ear base 7311 and right ear base 7312;The driving lead screw 735 is left and right double-screw thread lead screw, for driving left clamping jaw 732, right clamping jaw 733 realizes clamp or release, is equipped with left hand thread 7351 on half section of a left side for the driving lead screw 735, is driving Half section of the right side of dynamic lead screw 735 is equipped with right-handed thread 7352, and the both ends of driving lead screw 735 are separately mounted to left ear base 7311 and auris dextra In seat 7312, and it is connected by bearing with left ear base 7311, right ear base 7312, at the both ends of the driving lead screw 735 It is additionally provided with adjusting knob 737, is connected between the adjusting knob 737 and driving lead screw 735 by spline;Left clamping jaw 732, Right clamping jaw 733 is arranged in the two sides of T-type collet 736, for clamping T-type collet 736, left clamping jaw 732, right clamping jaw 733 and driving Lead screw 735 is connected by left-hand thread, right-hand thread respectively, and left clamping jaw 732, right clamping jaw 733 and guide post 734 pass through cylindrical pair phase Connection;The top of the T-type collet 736 is connected with second level moving platform 71 by screw.In the T-type collet 736 The left and right sides is equipped with card slot 7361, is equipped with the card matched with card slot 7361 in the inside of left clamping jaw 732, right clamping jaw 733 Tooth.
As shown in Fig. 1 and Fig. 9, the swing resetting apparatus 74 includes swinging reset spring 741 and oscillation adjustment screw rod 742.Wherein, the upper end of the swing reset spring 741 is fixed by screws in the lower section of second level moving platform 71, for being two Reset of the grade moving platform 71 when swinging provides power, swings the lower end of reset spring 741 and the upper end of oscillation adjustment screw rod 742 It is connected;The lower end of the oscillation adjustment screw rod 742 is connected with level-one moving platform 6 by screw thread, dynamic flat for adjusting second level Return spring force and amplitude of fluctuation of the platform 71 when swinging.
As shown in Figure 1 and Figure 4, the slewing equipment 8 includes revolving bed 81, revolving body 82, ring gear 83, driving gear 84, transmission shaft 85, transmission gear 86, driving gear 87 and rotary motor 88.Wherein, the lower end of the revolving bed 81 passes through spiral shell Nail is fixedly mounted on the top of second level moving platform 71, be used to support with installation revolving body 82, the upper end of the revolving body 82 with Test table 9 is connected by screw, is connected between the revolving body 82 and revolving bed 81 by spring bearing group.Institute The ring gear 83 stated is fixedly mounted on the inside of revolving body 82 by screw, and the driving gear 84 is fixedly mounted on transmission shaft 85 upper end, and internal messing is kept with ring gear 83, for driving ring gear 83 and revolving body 82 to rotate.The transmission gear 86 are fixedly mounted on the lower end of transmission shaft 85, and the transmission shaft 85 is placed in the transmission shaft mounting hole 712 of second level moving platform 71, And it is connected with second level moving platform 71 by bearing.The rotary motor 88 is placed in the motor mounting hole of second level moving platform 71 In 711, and it is connected with second level moving platform 71 by screw, for providing power for the rotation of driving gear 87, and then is driven Revolving body 82 is rotated relative to revolving bed 81.The driving gear 87 is fixedly mounted on the output shaft of rotary motor 88, and with Transmission gear 86 keeps external toothing, for driving transmission gear 86 and transmission shaft 85 to rotate;The driving gear 87 and revolution The output shaft of motor 88 is connected by flat key, is additionally provided with shaft end ring in the output the tip of the axis of rotary motor 88, and with return The output shaft fixed connection for turning motor 88, plays axially position.
As shown in Figure 1, Figure 2 and shown in Figure 10, in support base 1, three-degree of freedom flexible bracket 2, X to exciting device 3, Y-direction exciting Device 4 and the outside for swinging exciting device 7 are equipped with outer casing 14, and handle 15 is additionally provided at left and right sides of the outer casing. The present invention is additionally provided with controller 10, and the controller 10 passes through power cable 101, signal cable 102 and X to electromagnet 32, Y It is connected to electromagnet 42, Z-direction electromagnet 51, oscillating electromagnetic iron 75 and rotary motor 88.
In further technical solution, the spring bearing group described in above-mentioned slewing equipment 8, including a radial axle Hold with two thrust bearings, and two thrust bearings are arranged in the upper and lower ends of transverse bearing, and the transverse bearing is adopted With cylindrical roller transverse bearing or radial compound bearing, thrust bearing uses cylindrical roller thrust bearing or axial composite-rotor bearing.
In further technical solution, the rotary motor 88 described in above-mentioned slewing equipment 8 is using servo deceleration electricity Machine or hydraulic servo motor or air servo-motor.
In use, tested article is fixedly mounted on test table 9, this is determined according to vibration-testing need of work The vibrational degrees of freedom of invention and the vibration mode specifically executed, and then X is selected to swash to exciting device 3, Y-direction exciting device 4, Z-direction Vibrating device 5, the specific work in combination mode for swinging exciting device 7 and slewing equipment 8.Test table 9 X to exciting device 3, The linear vibration for realizing tri- directions X, Y, Z under the action of Y-direction exciting device 4, Z-direction exciting device 5 respectively, passes through rotation Adjusting knob 737 unclamps locking device 73, and starting oscillating electromagnetic iron 75 can realize test table 9 around 72 axis of supporting hinges Reciprocally swinging.The present invention at most can be achieved the linear vibration in tri- directions X, Y, Z and around being parallel to past physical pendulum of the X to axis It is dynamic, and around being parallel to the rotation of Z-direction axis totally five freedom of motion, reciprocally swinging of the test table 9 with respect to support base 1 It can be adjusted in real time under the action of slewing equipment 8.When not needing to generate swing, it is adjusted by rotation knob 737, is filled by locking 73 are set to lock second level moving platform 71 and level-one moving platform 6.
In the description of the present invention, it is to be understood that, term " on ", "lower", "top", "bottom", "inner", "outside" etc. indicate Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it is not considered as limiting the invention.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle It is fixed.

Claims (8)

1. a kind of five degree of freedom becomes cell type electromagnetic vibration test platform, including support base, three-degree of freedom flexible bracket, X are filled to exciting It sets, Y-direction exciting device, Z-direction exciting device, level-one moving platform, swing exciting device, slewing equipment and test table, it is special Sign is: the support base includes pedestal, X to electromagnet stent and Y-direction electromagnet stent, and X is electric to electromagnet stent and Y-direction Magnet holder has two groups, and is symmetrically arranged at the side of pedestal, and X is to the bottom of electromagnet stent and Y-direction electromagnet stent Portion is connected with pedestal;The quantity of the three-degree of freedom flexible bracket is four, the lower end of the three-degree of freedom flexible bracket It is connected with pedestal, the upper end and level-one moving platform are connected;The X to exciting device be located at level-one moving platform and support base it Between, the X to the quantity of exciting device be two, and two groups of X to exciting device be arranged symmetrically in X above pedestal to two sides; For the Y-direction exciting device between level-one moving platform and support base, the quantity of the Y-direction exciting device is two, and two Group Y-direction exciting device is arranged symmetrically in the two sides of Y-direction above pedestal;The Z-direction exciting device is located at pedestal and level-one is dynamic flat Between platform, including Z-direction electromagnet and Z-direction adsorption support, during the bottom of the Z-direction electromagnet is fixedly mounted on above pedestal Heart position, the Z-direction adsorption support is located at the surface of Z-direction electromagnet, and its top is fixedly mounted on level-one moving platform Lower section;The lower end of the slewing equipment, which is fixedly mounted on, to be swung on exciting device, and the swing exciting device is located at level-one Between moving platform and slewing equipment, the test table is fixedly mounted on the top of slewing equipment;
The X to exciting device include X to adsorption support, X to electromagnet, X to resetting apparatus and X to reset cradle, it is described Top from X to adsorption support and level-one moving platform be connected, the X is fixedly mounted on X to electromagnet stent to electromagnet Side, the X are fixedly connected with X to adsorption support, X to reset cradle respectively to the both ends of resetting apparatus;
The Y-direction exciting device includes Y-direction adsorption support, Y-direction electromagnet, Y-direction resetting apparatus and Y-direction reset cradle, described Y-direction adsorption support top and level-one moving platform be connected, the Y-direction electromagnet is fixedly mounted on Y-direction electromagnet stent Side, the both ends of the Y-direction resetting apparatus are fixedly connected with Y-direction adsorption support, Y-direction reset cradle respectively;
X is connected by welding or bolted mode with pedestal to reset cradle with the bottom of Y-direction reset cradle;
The swing exciting device is mounted on the top of level-one moving platform, including second level moving platform, supporting hinges, locking dress It sets, swing resetting apparatus and oscillating electromagnetic iron;Motor mounting hole and transmission shaft mounting hole are equipped on the second level moving platform, Two oscillating electromagnetic iron are arranged in parallel in the upper side of level-one moving platform, and are connected with level-one moving platform;The support hinge The quantity of chain is two, and two supporting hinges coaxial-symmetricals are arranged between second level moving platform and level-one moving platform, and are respectively positioned on pendulum The adjacent side of dynamic electromagnet, the upper and lower ends of supporting hinges are connected with second level moving platform, level-one moving platform respectively;The lock The upper and lower ends of tight device are connected with second level moving platform, level-one moving platform respectively, and be located at the opposite side of oscillating electromagnetic iron Middle position;Two swing the two sides that resetting apparatus is arranged symmetrically in locking device, and the upper end of the swing resetting apparatus is logical It crosses screw to be fixedly connected with second level moving platform, the lower end for swinging resetting apparatus is connected with level-one moving platform by screw thread;
The slewing equipment includes revolving bed, revolving body, ring gear, driving gear, transmission shaft, transmission gear, driving gear And rotary motor, the lower end of the revolving bed are fixedly mounted on the top of second level moving platform, the revolving body by screw Upper end be connected with test table by screw, the revolving body is connected with revolving bed by spring bearing group;Institute The ring gear stated is fixedly mounted on the inside of revolving body by screw, and the driving gear and ring gear keep internal messing;Institute The driving gear stated is fixedly mounted on the upper end of transmission shaft, and the transmission gear is fixedly mounted on the lower end of transmission shaft, described Transmission shaft be connected with second level moving platform by bearing;The rotary motor is placed in the motor mounting hole of second level moving platform It is interior, and be connected with second level moving platform by screw;The driving gear is fixedly mounted on the output shaft of rotary motor, and External toothing is kept with transmission gear, the driving gear is connected with the output shaft of rotary motor by flat key, in revolution horse The output the tip of the axis reached is additionally provided with shaft end ring, and the output shaft fixed connection with rotary motor.
2. a kind of five degree of freedom according to claim 1 becomes cell type electromagnetic vibration test platform, it is characterised in that: described three Freedom degree flexible support deforms leaf spring and X to deformation leaf spring, the lower end of the rigid lower supporter including rigid lower supporter, Y-direction It is fixedly mounted on pedestal, the lower end of Y-direction deformation leaf spring and the upper end of rigid lower supporter are connected, the Y-direction deformation The upper end of leaf spring and X are connected to the lower end of deformation leaf spring, and the X passes through bolt to the upper end of deformation leaf spring and level-one moving platform It is connected.
3. a kind of five degree of freedom according to claim 2 becomes cell type electromagnetic vibration test platform, it is characterised in that: the Y It is connected to the lower end of deformation leaf spring with rigid lower supporter by rivet hot or screw, and is welded in joint surrounding by agitating friction Mode reinforcement is connect, the upper end of the Y-direction deformation leaf spring and X weld to the lower end of deformation leaf spring by rivet hot and agitating friction dual The mode of connection is connected.
4. a kind of five degree of freedom according to claim 1 becomes cell type electromagnetic vibration test platform, it is characterised in that: the X It include X to double Hooke's joint, X to reset spring, X to adjusting screw rod to resetting apparatus, the one end and X of the X to double Hooke's joint It is connected to adsorption support by screw, the X is connected to reset spring by screw to the other end of double Hooke's joint with X It connects, the X is connected to reset spring by bolt to one end of adjusting screw rod with X, and the X is to the another of adjusting screw rod End is connected to reset cradle by bolt with X;The Y-direction resetting apparatus includes Y-direction double Hooke's joint, Y-direction reset spring, Y To adjusting screw rod, one end of the Y-direction double Hooke's joint is connected with Y-direction adsorption support by screw, and the Y-direction is double universal The other end of section is connected with Y-direction reset spring by screw, and one end of the Y-direction adjusting screw rod and Y-direction reset spring are logical It crosses bolt to be connected, the other end of the Y-direction adjusting screw rod is connected with Y-direction reset cradle by bolt.
5. a kind of five degree of freedom according to claim 1 becomes cell type electromagnetic vibration test platform, it is characterised in that: the branch Bearing group, including a transverse bearing and two thrust bearings are supportted, and two thrust bearings are arranged in the upper of transverse bearing Lower both ends, the transverse bearing use cylindrical roller transverse bearing or radial compound bearing, and thrust bearing uses cylindrical roller Thrust bearing or axial composite-rotor bearing.
6. a kind of five degree of freedom according to claim 1 becomes cell type electromagnetic vibration test platform, it is characterised in that: described returns Turn motor using servo deceleration motor or hydraulic servo motor or air servo-motor.
7. a kind of five degree of freedom according to claim 1 becomes cell type electromagnetic vibration test platform, it is characterised in that: the lock Tight device includes locking support, left clamping jaw, right clamping jaw, guide post, driving lead screw and T-type collet, the bottom of the locking support It is connected with level-one moving platform, is respectively arranged on the left side and the right side left ear base and right ear base in the locking support lower end;Described Guide post has two, and its both ends is arranged symmetrically and is mounted in left ear base and right ear base;The driving lead screw is left and right double thread Lead screw drives the both ends of lead screw to be separately mounted in left ear base and right ear base, and is connected by bearing with left ear base, right ear base It connects, is additionally provided with adjusting knob at the both ends of the driving lead screw;Left clamping jaw, right clamping jaw are arranged in the two sides of T-type collet, Zuo Jia Lead screw passes through left-hand thread respectively, right-hand thread is connected for pawl, right clamping jaw and driving, and left clamping jaw, right clamping jaw and guide post pass through cylinder Pair is connected;The top of the T-type collet and second level moving platform are connected;It is equipped at left and right sides of the T-type collet Card slot is equipped with the latch matched with card slot on the inside of left clamping jaw, right clamping jaw.
8. a kind of five degree of freedom according to claim 1 becomes cell type electromagnetic vibration test platform, it is characterised in that: the pendulum Dynamic resetting apparatus includes that swing reset spring and oscillation adjustment screw rod, the upper end of the swing reset spring are fixed by screw It is connected in the upper end of the lower section of second level moving platform, the lower end and oscillation adjustment screw rod that swing reset spring;The oscillation adjustment The lower end of screw rod is connected with level-one moving platform by screw thread.
CN201910113046.7A 2019-02-13 2019-02-13 Five-degree-of-freedom metamorphic electromagnetic vibration test bed Active CN109682563B (en)

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CN114619180B (en) * 2022-03-25 2024-05-24 安徽理工大学 Multidimensional vibration aging device special for automobile door welding
CN115576257A (en) * 2022-12-08 2023-01-06 北京航空航天大学 Aeroengine high altitude bench test control system

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