CN112229613A - Vibration isolator mechanical parameter testing device - Google Patents
Vibration isolator mechanical parameter testing device Download PDFInfo
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Abstract
The invention discloses a device for testing mechanical parameters of a vibration isolator, and aims to provide a testing device which is low in testing cost and high in testing efficiency. The invention is realized by the following technical scheme: set up the application of force screw rod through the portal on the base cantilever platform, with the cylinder body, vibration sensor and quality piece, connect the isolator, rectangle load seat, T shape step shaft and breach locking disc, fix between portal crossbeam and base cantilever platform, the shaking table is through the vibration sensor that vertical movable clamp complex vibration section of thick bamboo top is connected, connect the isolator through T shape step shaft and rectangle load seat, the isolator passes through the counter weight quality piece and connects vibration sensor, vibration sensor with pass the counter weight quality piece, contact rectangle load seat upper surface contact's displacement sensor electricity connection data acquisition instrument, form closed loop through data acquisition instrument and vibration sensor, it is quiet to constitute the test isolator, the device of kinetic parameter. The invention avoids the problem of rigidity coupling of the traditional four vibration isolators in combined test.
Description
Technical Field
The invention relates to a device for testing the static and dynamic performance parameters of a vibration isolator, which is mainly used for rapidly testing the dynamic parameters of the vibration isolator.
Background
The vibration phenomenon is ubiquitous, and the influence of the vibration effect on the structure is difficult to avoid. Various types of equipment installed on a moving platform or facility are always in a vibration environment, unless vibration is utilized to realize a certain function, generally speaking, the vibration is harmful, and dynamic deformation and dynamic stress can be caused, and the deformation and the stress can cause strength damage and fatigue damage of equipment structures and components, so that vibration isolators are generally required to be installed on the equipment for vibration reduction, influence and damage caused by vibration are reduced, static and dynamic performance parameters of the vibration isolators are required to be tested and mastered, and suitable vibration isolators can be selected from different equipment objects and vibration environments. The vibration isolator is an elastic element which provides a connecting function between the machine equipment and the machine foundation, and can effectively reduce the vibration force transmitted to the machine foundation by the equipment in the motion process and transmitted to the machine equipment by the machine foundation. And the vibration isolator structure can effectively reduce the high-frequency disturbance vibration energy transmission on the equipment body structure in the use process of various equipment devices. The common vibration control methods include three types, namely vibration absorption, vibration isolation and damping vibration attenuation. The existing vibration control includes the following two aspects: active control and passive control. The active control has the advantages of good control effect, high control efficiency and the like, but the requirement on the structure is high, and not all structures can meet the requirement of the active control. The passive control has the advantages of simple structure, no dependence on external energy, good vibration damping performance and the like, and is widely adopted. Vibration isolation is a widely used method in passive control. The good and bad vibration isolation effect lies in the design of the performance of the vibration isolator. In the design analysis and use of the vibration isolator, the damping coefficient and the stiffness coefficient are important parameters for analyzing the performance of the vibration isolator in the vibration isolation design, and the testing technology is an effective way for determining corresponding numerical values. Therefore, whether the test method is reasonable or not is an important standard for evaluating whether the test result is accurate or not for the test of the damping coefficient of the vibration isolator and whether the test system is complete or not. In the design and use process of the vibration isolator, equipment for testing the damping coefficient generally comprises a universal material testing machine, a cam testing system, a high-frequency fatigue testing machine and the like. In the current stage, the phenomena of complex test flow and low test result precision exist in a specific test method aiming at dynamic parameters such as a damping coefficient, a stiffness coefficient and the like in the use process of the vibration isolator, and certain influence is caused on the precise design and use of the performance of the vibration isolator. In the previous measurement and detection processes of the damping coefficient and the stiffness coefficient of the vibration isolator, the problems of complex process flow and substandard test result exist in the test of the relevant dynamic parameters of the vibration isolator, and the test result and the final application range of the dynamic parameters of vibration isolator equipment are adversely affected. The traditional test method for the dynamic parameters of the vibration isolator mainly adopts an experimental mechanical impedance curve fitting obtaining method to complete the test work of the damping coefficient and the rigidity coefficient of the structure of the vibration isolator according to the internal vibration isolation principle of the structure of the vibration isolator in the using process, but the experimental mechanical impedance curve fitting obtaining method only can carry out single checking calculation on the damping and rigidity values in the dynamic parameters of the vibration isolator, and the situation that the damping and the rigidity of viscous fluid change along with the change of vibration frequency and further influence the vibration isolation performance of the vibration isolator is not fully considered in the specific checking calculation process.
At present, the static and dynamic performance parameter tests of the vibration isolator are realized by adopting different test instruments or test devices respectively. The static performance parameter test of the traditional vibration isolator is usually realized by adopting a material testing machine or a digital display force measuring system as shown in fig. 4, the vibration isolator 6 is placed on a base 26 of the material testing machine, a pressure arm 23 is driven to extrude the vibration isolator to generate deformation, a data acquisition device 25 tests the deformation and the pressure through a displacement sensor 27 arranged on the base 26 and a force sensor 24 arranged on the force arm 23, and the secondary processing is carried out on the test data to obtain the static performance parameters of the vibration isolator, such as rated pressure, rated deformation, maximum pressure, maximum deformation and the like.
The dynamic performance parameter test of the traditional vibration isolator is generally realized by adopting a test system shown in fig. 5, wherein four vibration isolators 6 are respectively and fixedly connected with a balance weight part 28 and a clamp 29, the clamp 29 is fixedly connected with a vibration table 2, sensors 7 and 19 are respectively installed on the balance weight part 28 and the clamp 29 and are connected with a data acquisition instrument 16, when a vibration controller 21 generates a preset vibration/impact signal and inputs the preset vibration/impact signal into the vibration table 2, the clamp 29 is driven to drive the four vibration isolators 6 and the balance weight part 28 to generate acceleration response, the data acquisition instrument 16 respectively acquires response data of two positions through the sensors 7 and 19, and the dynamic performance parameters such as the resonance frequency, the vibration attenuation efficiency, the resonance amplification rate and the like of the vibration isolators are acquired through processing the response data.
Because different testing devices or systems are needed for static and dynamic performance testing, the problem of low testing efficiency is brought, different testing personnel are familiar with different testing systems, instrument functions and performance parameters and have different operation accuracy degrees, and the problem of difficulty in controlling process testing errors is also brought; the dynamic performance parameter testing system of the traditional vibration isolator needs four vibration isolators to test together, has the risk of rigidity coupling of a plurality of vibration isolators, needs elaborate counterweight and installation, and wastes time and labor; when a plurality of groups of dynamic performance parameters of the vibration isolator in a pre-pressure state need to be tested, a plurality of balance weights need to be manufactured, so that the testing time and the material cost are high.
Among the embodiments known in the art, chinese patent application publication No. CN201811646049.9 discloses a vibration isolator testing device, which includes a base, a testing component, a waveform generator and a main guide post, wherein the testing component is composed of a testing table, a vibration isolator and a force sensor, and an external load, and the testing device can only test the dynamic performance parameters of the vibration isolator under the condition of drop impact; chinese application patent publication Nos. CN201810822719.1 and CN201811086115.1 respectively disclose two testing devices for automobile vibration isolators, including a workbench, a ground simulator and a testing device including vibration isolators, all testing the dynamic parameters of the automobile spring vibration isolators based on the principle that eccentric wheels or eccentric shafts are used as vibration excitation sources, and having the limitations of complex structure, few testing parameters, single testing purpose, low testing efficiency and the like; the Chinese patent application CNCN201911078284.5 discloses a vibration isolator testing device, which comprises a fixed end, a linear actuator, a force sensor and a vibration isolator, is mainly used for testing the snake-shaped vibration isolator of a railway vehicle system, and has the limitations of poor universality, single testing vibration condition and the like.
In the face of the requirements of statics and dynamics multi-performance parameter testing, high-efficiency testing and the like of the universal vibration isolator, the vibration isolator testing device disclosed by the patent application is difficult to meet.
Disclosure of Invention
The invention aims to provide a mechanical parameter testing device of the vibration isolator, which has the advantages of simple and feasible structure, strong practicability, few testing instruments, low testing cost, high testing efficiency, high static and dynamic measurement and high measuring precision, and aims to overcome the defects of the static and dynamic multi-performance parameter testing of the conventional vibration isolator.
The invention is realized by the following modes: the utility model provides a vibration isolator mechanical parameter testing arrangement, includes that a system has cantilever platform's base 1, installs respectively damper 15 on base platform of base 1 cantilever platform lower both sides wall bottom base, and the fixed shaking table 2 of sitting in the 15 vallecular cavities of damper is located base 1 cantilever platform below and fixes on 2 both sides boards of shaking table and connect vibration controller 21's vertical movable clamp 14, its characterized in that: the cantilever platform of the base 1 is provided with a force application screw 9 passing through a portal 4 beam, the force application screw 9 fixes a cylinder body 8, a vibration sensor 7 and a mass block 11, a connecting vibration isolator 6, a rectangular bearing seat 5, a T-shaped stepped shaft 3 and a notch locking disc 22 between the portal 4 beam and the cantilever platform of the base 1 from top to bottom, the vibration platform 2 is connected with the vibration sensor 13 through the top of a vibration cylinder matched with a vertical movable hoop 14, the vibration isolator 6 is connected with the rectangular bearing seat 5 through the T-shaped stepped shaft 3, the vibration isolator 6 is connected with the vibration sensor 7 through a counterweight mass block 11, the vibration sensor 7 is electrically connected with a data acquisition instrument 16 through a displacement sensor 10 which passes through the counterweight mass block 11 and contacts the upper surface of the rectangular bearing seat 5, and forms a closed loop with the vibration sensor 13 through the data acquisition instrument 16, thereby forming a, And (3) a kinetic parameter device.
Compared with the prior art, the invention has the following beneficial effects:
simple and easy structure, practicality are strong, test instrument is few. The invention adopts a base 1 provided with a cantilever platform, dampers 15 respectively arranged on base platforms at the bottom of two side walls below the cantilever platform of the base 1, a fixed vibration table 2 positioned in a groove cavity of the dampers 15, a vertical movable hoop 14 positioned below the cantilever platform of the base 1 and fixed on two side plates of the vibration table 2 and connected with a vibration controller 21, a force application screw 9 passing through a beam of a gantry 4 is arranged on the cantilever platform of the base 1, a cylinder body 8, a vibration sensor 7, a mass block 11, a connecting vibration isolator 6, a rectangular force bearing seat 5, a T-shaped stepped shaft 3 and a notch locking disc 22 are fixed between the beam of the gantry 4 and the cantilever platform of the base 1 from top to bottom, and the vibration table 2 is connected with the vibration sensor 13 through the top of a vibration cylinder matched with the vertical movable hoop 14. The invention has low manufacturing cost
The test cost is low. The invention connects the vibration isolator 6 through the T-shaped stepped shaft 3 and the rectangular bearing seat 5, the vibration isolator 6 connects the vibration sensor 7 through the counterweight mass block 11, the vibration sensor 7 is electrically connected with the data acquisition instrument 16 through the counterweight mass block 11 and the displacement sensor 10 which contacts the upper surface of the rectangular bearing seat 5, and forms a closed loop circuit through the data acquisition instrument 16 and the vibration sensor 13, thus forming a complete device for testing the static and dynamic parameters of the vibration isolator. The device has the advantages that various statics and dynamics performance parameters of the universal vibration isolator can be tested on one device, mature instruments and equipment such as a vibration table, a data acquisition instrument and a sensor in each testing unit/manufacturer at present are fully utilized, an auxiliary testing structure is ingeniously added, various statics and dynamics performance parameters of the universal vibration isolator can be realized, other testing instruments such as a material testing machine are not needed, personnel and instrument conversion cost in the statics and dynamics performance parameter testing process is remarkably reduced, and the testing period can be obviously shortened.
The testing efficiency is high. The invention adopts the vibration sensor 7 and the displacement sensor 10 which passes through the counterweight mass block 11 and contacts the upper surface of the rectangular bearing seat 5 to be electrically connected with the data acquisition instrument 16, and forms a closed loop through the data acquisition instrument 16 and the vibration sensor 13, thereby eliminating the rigidity decoupling operation of the combined test of a plurality of vibration isolators, eliminating the need of testers to operate various test instruments, being capable of independently testing the statics and dynamics performance parameters of the vibration isolators on one device, being capable of conveniently realizing the dynamic response characteristic test of the vibration isolators when various static pressures act, having low test operation difficulty and being capable of being competent for types of multiple test tasks. The rigidity coupling problem caused by the combination test of the four traditional vibration isolators is avoided, the problem of errors caused by insufficient switching operation experience of various instruments is solved, and the test operation difficulty is greatly reduced.
The vibration isolator testing device has the advantages of multiple competent testing task types, few special testing instruments, high testing efficiency, low testing cost, capability of eliminating the problem of rigidity coupling caused by the combined test of the vibration isolator, easiness in control of testing errors and the like. The requirements of high-efficiency and low-cost test on various static and dynamic performance parameters of the universal vibration isolator are met.
Drawings
Fig. 1 is a structural view of a device for testing mechanical parameters of an isolator according to embodiment 1 of the present invention.
Fig. 2 is a state diagram of the non-pre-stressed dynamic performance parameter test of fig. 1.
Fig. 3 is a structural view of the device for testing mechanical parameters of an isolator according to embodiment 2.
Fig. 4 is a diagram of a conventional device for testing the static parameters of the vibration isolator.
Fig. 5 is a diagram of a conventional device for testing dynamic parameters of the vibration isolator.
In the figure: the vibration isolator comprises a base, a vibration table, a 3T-shaped stepped shaft, a 4 portal frame, a 5 rectangular bearing seat, a 6 vibration isolator, a 7 vibration sensor, a 8 cylinder body, a 9 force application screw, a 10 displacement sensor, a 11 counterweight mass block, a 12 fastening nut, a 13 vibration sensor, a 14 vertical movable hoop, a 15 damper, a 16 data acquisition instrument, a 17 force sensor, a 18 counterweight block, a 19 vibration isolator, a 20L-shaped support, a 21 vibration controller, a 22 notch lock disc, a 23 force arm, a 24 force sensor, a 25 acquisition device, a 26 base, a 27 displacement sensor, a 28 counterweight block and a 29 clamp.
To further illustrate, but not limit, the above-described implementations of the invention, the following description of preferred embodiments is given in conjunction with the accompanying drawings, so that the details and advantages of the invention will become more apparent.
Detailed Description
Refer to fig. 1 and 2. In the embodiment described below, a device for testing mechanical parameters of vibration isolator comprises a base 1 with a cantilever platform, a fixed vibration table 2 located in a groove cavity of the damper 15 through dampers 15 respectively installed on two lower side walls of the cantilever platform of the base 1 and a bottom base platform, and a vertically movable hoop 14 located below the cantilever platform of the base 1 and fixed on two side plates of the vibration table 2 and connected with a vibration controller 21, and is characterized in that: a force application screw 9 passing through a portal 4 crossbeam is arranged on a cantilever platform of the base 1, a cylinder body 8, a vibration sensor 7, a mass block 11, a connecting vibration isolator 6, a rectangular bearing seat 5, a T-shaped stepped shaft 3 and a notch locking disc 22 are fixed between the portal 4 crossbeam and the cantilever platform of the base 1 from top to bottom, a vibration table 2 is connected with the vibration isolator 6 through a vibration cylinder top matched with a vertical movable hoop 14, the vibration isolator 6 is connected with the vibration sensor 6 through the T-shaped stepped shaft 3 and the rectangular bearing seat 5, the vibration isolator 6 is connected with the vibration sensor 7 through a counterweight mass block 11, the vibration sensor 7 is electrically connected with a data acquisition instrument 16 through a displacement sensor 10 which passes through the counterweight mass block 11 and contacts the upper surface of the rectangular, a closed loop is formed by the data acquisition instrument 16 and the vibration sensor 13, so that a complete device for testing static and dynamic parameters of the vibration isolator is formed.
The cantilever platform is provided with a chute for fixing the portal frame 4, and the portal frame 4 is fixed in the chute of the cantilever platform of the base 1 in a sliding manner through two fastening nuts 12 below the cantilever platform; the threaded through hole on the beam of the door frame 4 extends into the guide blind hole of the cylinder body 8, a limiting structure for preventing the cylinder body 8 from falling off from the door frame 4 is arranged between the cylinder body 8 and the door frame 4, and the force application screw rod 9 is in threaded connection with the cylinder body 8 through the beam of the door frame 4.
The cantilever platform is provided with a guide groove, the shaft of the T-shaped stepped shaft 3 is provided with a guide rib, the circumferential rotation of the T-shaped stepped shaft 3 is completely limited by the matching installation of the guide groove and the guide rib, and the notch lock disc 22 is inserted between the T-shaped stepped shaft 3 and the upper surface of the cantilever platform of the base 1 to limit the vertical up-and-down movement of the T-shaped stepped shaft 3.
The vibration table 2 is fixed in a groove of a U cavity of the base 1 through a damper 15 and a vertically movable hoop 14, and the vertically movable hoop 14 is of a flexible structure in the axial direction of the vibration table 2 and is of a rigid structure in the non-axial direction.
The gantry 4 is provided with two guide columns which are in sliding connection with two guide holes of a cylinder body 8, the rectangular bearing seat 5 is respectively fixedly connected with the T-shaped stepped shaft 3 and the vibration isolator 6, mounting holes for fixedly connecting the T-shaped stepped shaft 3 and the vibration isolator 6 are formed in three surfaces of the rectangular bearing seat 5, and X, Y, Z triaxial mechanical parameter testing of the vibration isolator 6 is realized through axial replacement mounting of the rectangular bearing seat 5 on the end surface of the T-shaped stepped shaft 3.
When in use, the force application screw 9 is rotated to drive the cylinder body 8 to move linearly downwards and extrude the vibration sensor 7 and the counterweight mass block 11, and static pressure is applied to the vibration isolator 6; then, the vibration control instrument 21 drives the vibration table 2 to provide vibration excitation to be applied to the T-shaped stepped shaft 3, the vibration sensor 13 and the rectangular bearing seat 5, so that the vibration isolator 6 generates vibration response, signals such as static pressure, excitation force/acceleration input, vibration response and the like are collected by the vibration sensor 7, the displacement sensor 10 and the vibration sensor 13 and input into the data collection instrument 16, data processing is provided for the data collection instrument 16, and static and dynamic performance parameters of the vibration isolator can be obtained.
During static test, firstly, the notch lock disc 22 is in a locked state, the T-shaped stepped shaft 3 is completely limited from moving up and down, then the knob of the force application screw 9 is twisted, the cylinder body 8 is driven to extrude the vibration sensor 7 and the counterweight mass block 11 to apply static pressure on the vibration isolator 6, the vibration isolator 6 deforms under stress, the relative distance between the counterweight mass block 11 and the rectangular bearing seat 5 changes, the data acquisition instrument 16 acquires stress and deformation data of the vibration isolator through the displacement sensor 10 and the force vibration sensor 7, and the static parameters of the vibration isolator such as rated load and static deformation can be acquired through post-processing of the data.
During dynamic test, firstly, the notch lock disc 22 is taken down, so that the T-shaped stepped shaft 3 can move up and down, the fastening nut 12 is loosened, the gantry 4 moves to the other side far away from the T-shaped stepped shaft 3 along the guide groove on the cantilever platform of the base 1, and the fastening nut 12 is screwed; then, the vibration condition is input into a vibration controller 21 to output excitation current to drive a vibration table 2 to generate vibration force excitation, the vibration force excitation is applied to a T-shaped stepped shaft 3, a vibration sensor 13 and a rectangular bearing seat 5, so that a vibration response is generated on a vibration isolator 6, signals of vibration excitation force input, vibration response and the like are acquired through a force vibration sensor 7 and an acceleration vibration sensor 13 and input into a data acquisition instrument 16, and test data output by the data acquisition instrument 16 are processed, so that the dynamic performance parameters of the vibration isolator such as resonance frequency, resonance amplification rate, vibration reduction efficiency and the like can be obtained.
See fig. 3. The difference between this embodiment and the above embodiment 1 is that the gap locking disc 22 is removed, the gantry 4 with a door-shaped structure is modified to be a reverse gantry which is directly and fixedly installed on the cantilever platform of the base 1, the force application screw 9 is screwed with the cylinder body 8 through the reverse gantry of the gantry 4, the newly added force sensor 17 is fixedly connected with the counterweight 18, the cylinder body 8 is fixedly connected with the L-shaped support 20, the newly added vibration isolator 19 installed on the L-shaped support 20 is not in virtual contact with the force sensor 17, the vibration sensor 7 is connected with the rectangular bearing seat 5 through the vibration isolator 6, the rectangular bearing seat 5 penetrates into the cantilever platform of the base 1 through the T-shaped stepped shaft 3 to be connected with the vibration sensor 13, the data acquisition instrument 16 is connected with the displacement sensor 10, and a device capable of realizing simultaneous testing of static and dynamic parameters of the vibration isolator is formed among the force sensor 17, the vibration sensor 7 and the vibration sensor 13.
The technical solution of the present invention is not limited to the above-mentioned specific embodiments, and what is described above is only the preferred embodiments of the present invention. It should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the principle of the present invention, and all technical changes made according to the technical solutions of the present invention fall within the protection scope of the present invention. The terms "upper", "lower", "top", "bottom", "inner", and the like in the description of the present invention indicate orientation or positional relationship among elements for convenience in description of the orientation or positional relationship among the elements shown in the drawings, and do not indicate or imply that the referenced devices or elements must have a specific orientation, position, and operation in particular implementations, and should not be construed as limiting the present invention.
Claims (10)
1. The utility model provides a vibration isolator mechanical parameter testing arrangement, includes that a system has base (1) of cantilever platform, through install attenuator (15) on base (1) cantilever platform lower both sides wall and bottom base platform respectively, fixed shaking table (2) of sitting in attenuator (15) slot cavity are located base (1) cantilever platform below and fix on shaking table (2) both sides board and connect vertical movable clamp (14) of vibration control appearance (21), its characterized in that: a cantilever platform of the base (1) is provided with a force application screw rod (9) which passes through a portal (4) beam, the force application screw rod (9) fixes a cylinder body (8), a vibration sensor (7) and a mass block (11) between the portal (4) beam and the cantilever platform of the base (1), the vibration isolator (6), a rectangular bearing seat (5), a T-shaped stepped shaft (3) and a notch lock disc (22) from top to bottom, the vibration table (2) is connected between the portal (4) beam and the cantilever platform of the base (1) through a vibration sensor (13) which is connected with the top of a vibration cylinder matched with a vertical movable clamp (14), the vibration isolator (6) is connected with the T-shaped stepped shaft (3) and the rectangular bearing seat (5) through the T-shaped stepped shaft (3), the vibration isolator (6) is connected with the vibration sensor (7) through a counterweight mass block (11), the vibration sensor (7) is electrically connected with a, a closed loop is formed by a data acquisition instrument (16) and a vibration sensor (13), so that a complete device for testing static and dynamic parameters of the vibration isolator is formed.
2. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: the cantilever platform is provided with a chute for fixing the portal (4), and the portal (4) is fixed in the chute of the cantilever platform of the base (1) in a sliding manner through two fastening nuts (12) below the cantilever platform; during the screw thread through-hole on portal (4) crossbeam stretched into the direction blind hole of cylinder body (8), was provided with between cylinder body (8) and portal (4) and prevents that cylinder body (8) from following the limit structure that drops on portal (4), and application of force screw rod (9) pass through portal (4) crossbeam spiro union cylinder body (8).
3. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: vibration sensor (7) pass through counter weight quality piece (11) and isolator (6) fixed connection, displacement sensor (10) parallel to vibration sensor (7) run through counter weight quality piece (11) back and the upper end plane of rectangle load seat (5) of lower part do not have virtual position contact, isolator (6) fixed mounting is in rectangle load seat (5) upper surface plane, and fixed connection is in the cantilever platform that base (1) is run through in planar T shape step shaft (3) under rectangle load seat (5).
4. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: the cantilever platform is provided with a guide groove, a guide rib is arranged on the shaft of the T-shaped stepped shaft (3), the T-shaped stepped shaft (3) is completely limited from rotating in the circumferential direction through the matched installation of the guide groove and the guide rib, and the notch lock disc (22) is inserted between the T-shaped stepped shaft (3) and the upper surface of the cantilever platform of the base (1) to limit the vertical up-and-down movement of the T-shaped stepped shaft (3).
5. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: the vibration table (2) is fixed in a groove of a U cavity of the base (1) through a damper (15) and a vertical movable hoop (14), and the vertical movable hoop (14) is of a flexible structure in the axial direction of the vibration table (2) and is of a rigid structure in the non-axial direction.
6. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: the mechanical parameter testing device is characterized in that two guide columns are arranged on the portal frame (4) and are in sliding connection with two guide holes of the cylinder body (8), the rectangular bearing seat (5) is respectively in fixed connection with the T-shaped stepped shaft (3) and the vibration isolator (6), mounting holes for fixedly connecting the T-shaped stepped shaft (3) and the vibration isolator (6) are formed in three surfaces of the rectangular bearing seat (5), and the vibration isolator (6) is tested according to X, Y, Z triaxial mechanical parameters by axially mounting the rectangular bearing seat (5) on the end surface of the T-shaped stepped shaft (3).
7. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: when the vibration isolator is used, the force application screw (9) is rotated to drive the cylinder body (8) to move linearly downwards and extrude the vibration sensor (7) and the counterweight mass block (11), and static pressure is applied to the vibration isolator (6); then, the vibration control instrument (21) drives the vibration table (2) to provide vibration excitation to be applied to the T-shaped stepped shaft (3), the vibration sensor (13) and the rectangular bearing seat (5), so that the vibration isolator (6) generates vibration response, signals such as static pressure, excitation force/acceleration input, vibration response and the like are collected and input into the data acquisition instrument (16) through the vibration sensor (7), the displacement sensor (10) and the vibration sensor (13), data processing is provided for the data acquisition instrument (16), and static and dynamic performance parameters of the vibration isolator can be obtained.
8. The device for testing the mechanical parameters of the vibration isolator according to claim 7, wherein: during statics testing, the notch lock disc (22) is in a locked state, the T-shaped stepped shaft (3) is completely limited to move up and down, then a knob of the force application screw (9) is twisted, the cylinder body (8) is driven to extrude the vibration sensor (7) and the counterweight mass block (11) to apply static pressure on the vibration isolator (6), the vibration isolator (6) is stressed to deform, the relative distance between the counterweight mass block (11) and the rectangular bearing seat (5) is changed, the data acquisition instrument (16) acquires stress and deformation data of the vibration isolator through the displacement sensor (10) and the force vibration sensor (7), and the statics parameters of the vibration isolator such as rated load and static deformation are acquired through post-processing of the data.
9. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: during dynamic testing, the notch lock disc (22) is taken down, the T-shaped stepped shaft (3) can move up and down, the fastening nut (12) is loosened, the gantry (4) moves to the other side far away from the T-shaped stepped shaft (3) along a guide groove on a cantilever platform of the base (1), and the fastening nut (12) is screwed down; then, inputting the vibration condition into a vibration controller (21) to output excitation current to drive a vibration table (2) to generate vibration force excitation, applying the vibration force excitation to a T-shaped stepped shaft (3), a vibration sensor (13) and a rectangular bearing seat (5) to enable a vibration isolator (6) to generate vibration response, acquiring vibration excitation force input and vibration response signals through a force vibration sensor (7) and an acceleration vibration sensor (13) and inputting the vibration excitation force input and vibration response signals into a data acquisition instrument (16), and processing test data output by the data acquisition instrument (16) to obtain the dynamic performance parameters of the resonance frequency, the resonance amplification rate and the vibration reduction efficiency of the vibration isolator.
10. The device for testing the mechanical parameters of the vibration isolator according to claim 1, wherein: a notch lock disc (22) is removed, a portal frame (4) with a portal structure is changed into a reverse portal frame which is directly and fixedly installed on a cantilever platform of a base (1), a force application screw rod (9) is screwed with a cylinder body (8) through the reverse portal frame (4) to connect a displacement sensor (10), a newly added force sensor (17) is fixedly connected with a balancing weight (18), the cylinder body (8) is fixedly connected with an L-shaped support (20), a newly added vibration isolator (19) installed on the L-shaped support (20) is not in virtual contact with the force sensor (17), a vibration sensor (7) is connected with a rectangular bearing seat (5) through a vibration isolator (6), the rectangular bearing seat (5) is connected with a vibration sensor (13) through a T-shaped stepped shaft (3) which penetrates into the cantilever platform of the base (1), a data acquisition instrument (16) is connected among the displacement sensor (10), the force sensor (17), the vibration sensor (7) and the vibration sensor (13), the device capable of simultaneously testing the static and dynamic parameters of the vibration isolator is formed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138069A (en) * | 2021-04-06 | 2021-07-20 | 北京工业大学 | Mechanical indication electric meter main shaft fastening detection device |
| CN113358465A (en) * | 2021-05-26 | 2021-09-07 | 中南大学 | Rigidity testing device for steel spring floating slab track vibration isolator |
| CN114295359A (en) * | 2022-01-11 | 2022-04-08 | 中国第一汽车股份有限公司 | Method and device for measuring dynamic damping parameters |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988008525A1 (en) * | 1987-04-30 | 1988-11-03 | Kimball David V | Vibration test apparatus bearing |
| CN204389150U (en) * | 2014-12-30 | 2015-06-10 | 广东西电动力科技股份有限公司 | A kind of vibroshock static properties testing table |
| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
| CN104913919A (en) * | 2015-06-16 | 2015-09-16 | 西华大学 | Rubber isolator dynamic and static performance testing device |
| CN204758273U (en) * | 2015-06-16 | 2015-11-11 | 西华大学 | Rubber vibration isolator dynamic and static performance testing arrangement |
| CN107631886A (en) * | 2017-08-23 | 2018-01-26 | 潍柴动力股份有限公司 | Quiet, dynamic stiffness the test system and method for testing of a kind of suspending cushion |
| CN208721512U (en) * | 2018-08-31 | 2019-04-09 | 河南民生特种装备有限公司 | A kind of detection device for double-helix spring vibration isolator |
-
2020
- 2020-10-05 CN CN202011067103.1A patent/CN112229613B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988008525A1 (en) * | 1987-04-30 | 1988-11-03 | Kimball David V | Vibration test apparatus bearing |
| CN204389150U (en) * | 2014-12-30 | 2015-06-10 | 广东西电动力科技股份有限公司 | A kind of vibroshock static properties testing table |
| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
| CN104913919A (en) * | 2015-06-16 | 2015-09-16 | 西华大学 | Rubber isolator dynamic and static performance testing device |
| CN204758273U (en) * | 2015-06-16 | 2015-11-11 | 西华大学 | Rubber vibration isolator dynamic and static performance testing arrangement |
| CN107631886A (en) * | 2017-08-23 | 2018-01-26 | 潍柴动力股份有限公司 | Quiet, dynamic stiffness the test system and method for testing of a kind of suspending cushion |
| CN208721512U (en) * | 2018-08-31 | 2019-04-09 | 河南民生特种装备有限公司 | A kind of detection device for double-helix spring vibration isolator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138069A (en) * | 2021-04-06 | 2021-07-20 | 北京工业大学 | Mechanical indication electric meter main shaft fastening detection device |
| CN113358465A (en) * | 2021-05-26 | 2021-09-07 | 中南大学 | Rigidity testing device for steel spring floating slab track vibration isolator |
| CN114295359A (en) * | 2022-01-11 | 2022-04-08 | 中国第一汽车股份有限公司 | Method and device for measuring dynamic damping parameters |
| CN114295359B (en) * | 2022-01-11 | 2024-05-03 | 中国第一汽车股份有限公司 | Method and device for measuring dynamic damping parameters |
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