CN116087341A - Dumbbell type mass system buffer material vibration transfer characteristic test device - Google Patents
Dumbbell type mass system buffer material vibration transfer characteristic test device Download PDFInfo
- Publication number
- CN116087341A CN116087341A CN202310208318.8A CN202310208318A CN116087341A CN 116087341 A CN116087341 A CN 116087341A CN 202310208318 A CN202310208318 A CN 202310208318A CN 116087341 A CN116087341 A CN 116087341A
- Authority
- CN
- China
- Prior art keywords
- mass
- connecting rod
- buffer material
- workbench
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 139
- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 238000012546 transfer Methods 0.000 title claims abstract description 26
- 230000004044 response Effects 0.000 claims abstract description 15
- 230000005284 excitation Effects 0.000 claims abstract description 13
- 238000013016 damping Methods 0.000 claims 3
- 239000002356 single layer Substances 0.000 abstract description 6
- 239000010410 layer Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000005022 packaging material Substances 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/048—Transmission, i.e. analysed material between transmitter and receiver
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a dumbbell type mass system buffer material vibration transfer characteristic test device, which relates to the technical field of material mechanical property test, wherein an upper pressing frame is connected with a tabletop type workbench or a vibrating table surface, a dumbbell type mass system comprises an upper mass, a connecting rod and a lower mass, the upper mass and the lower mass are respectively connected with the upper end and the lower end of the connecting rod, the connecting rod is connected with the tabletop type workbench through a linear bearing, the lower mass comprises a plurality of weight type masses, buffer material samples are arranged between the upper pressing frame and the upper mass and between the upper mass and the tabletop type workbench, the upper buffer material sample is connected with the upper mass, the connecting rod penetrates through the lower buffer material sample, an excitation sensor is arranged on the tabletop type workbench, and a response sensor is arranged on the upper mass. The invention can test single-layer materials or double-layer materials and ensure the stability of a quality system.
Description
Technical Field
The invention relates to the technical field of material mechanical property testing, mainly relates to vibration transmission characteristic testing of a buffer material, and particularly relates to a dumbbell type mass system buffer material vibration transmission characteristic testing device.
Background
The vibration transmission characteristic of the cushioning packaging material is one of important performances required by transportation packaging protection, and the transmission rate of the system, namely the dimensionless ratio of the response amplitude of the system in steady-state forced vibration to the excitation amplitude, is obtained through a vibration transmission characteristic experiment. The vibration transmission characteristic test system of the packaging material consists of a buffer material and a mass block, wherein an acceleration sensor is respectively arranged on a vibration table and the mass block during test, excitation and response acceleration of the system along with frequency change are recorded, and a relation curve of the transmission rate and the frequency of the system, namely the vibration transmission characteristic of the system, is obtained through the ratio of the response acceleration to the excitation acceleration under different frequencies.
Since the packaging system is mainly excited by vibrations in the vertical direction during transportation, the vibration transfer characteristics of the cushioning packaging material are also mainly tested in the vertical direction. The vibration transfer characteristic test method and device of the existing cushioning packaging material are also in the vertical direction, and three modes exist in the vibration transfer characteristic test of the cushioning material in the vertical direction.
In document 1 (Schueneman Herbert h.. Product-and-Package-construction-Testing [ Online ]. Westpak, inc. 2016), there are two general principles of description: the first is that a single-layer buffer material, a mass block and a vibrating table are bonded together through an adhesive to form a spring mass system, namely a T-C mode (for short), and the buffer material is subjected to two stresses of stretching and compression in the vibration process; the second is that the mass is placed between the upper and lower cushioning materials, i.e. the double-layer cushioning materials, and then fixed together with the vibration table by the pressing frame, which is called C-C mode (Cushion-CushionModel) for short, and the materials only bear compressive stress during the vibration process.
In document 2 (Parker Anthony James.A method of characterisation of the nonlinear vibration transmissibility of cushioning materials [ D ]. Melbourne: victoria University,2007: 54), a guided Mass test single layer cushioning packaging material, referred to as a GM-C (Guide Mass-CushionModel) mode, is used, which is a third mode of the vertical vibration transfer characteristic test.
Both the first and third modes are tests for single layer materials, and the second mode is a test for double layer materials. The current national and international standards mainly adopt a second test mode, such as U.S. military packaging design handbook of document 3 (Package Cushioning design. MIL-HDBK-304C.US:Department of Defense,1997:30-32.) and the national standard of document 4 (GB/T8169-2008 method for testing vibration transfer characteristics of cushioning materials for packaging [ S ]).
Aiming at the defects in the second test mode, the fifth document (Chinese patent with publication number of CN103336061B and patent name of a buffer material vibration transmissibility test fixing device) is improved, and a device capable of adjusting the static pressure of the buffer material and a sensor for measuring the static pressure in real time are additionally arranged, so that load is applied to a test system according to the set static pressure, and the consistency of each test is ensured. However, the device does not solve the problem that the buffer material or the mass system is shifted or separated due to the fact that the periphery is not provided with a horizontal fence in the vibration process, and experimental failure or damage to the experimental device is easy to occur.
Aiming at the defects in the third test mode, a fixing device is invented in the sixth document (Chinese patent publication No. CN211061475U, patent name is a table top gravity type buffer material vibration transmissibility test fixing device), the device adopts a table top mounting bracket fixing device of a vibrating table, and a mass block system is in linear sliding guide fit with a bracket, so that the mass block and the buffer material are always in an aligned up-down vibration state in the vibration test process. However, the device has two defects, namely, only a single-layer material can be tested, and when the mass system is heavy, the stability of the mass system is poor, so that the guide shaft is easy to deform.
Disclosure of Invention
The invention aims to provide a vibration transfer characteristic test device for a buffer material of a dumbbell type mass system, which solves the problem of testing the vibration transfer characteristic of a system formed by a buffer material sample and the dumbbell type mass system in the vertical direction.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a dumbbell type mass system buffer material vibration transfer characteristic test device which comprises an upper pressing frame, a dumbbell type mass system, a tabletop type workbench, an anti-collision material, a vibrating table top, an excitation sensor and a response sensor, wherein the tabletop type workbench is arranged on the vibrating table top, the upper pressing frame is connected with the tabletop type workbench or the vibrating table top, the dumbbell type mass system comprises an upper mass, a connecting rod and a lower mass, the upper mass and the lower mass are respectively connected with the upper end and the lower end of the connecting rod, the connecting rod is connected with the tabletop type workbench through a linear bearing, the lower mass comprises a plurality of weight type masses, the upper pressing frame is connected with the upper mass, the upper mass is connected with the tabletop type workbench through the buffer material sample between the upper pressing frame and the upper mass, the connecting rod penetrates through the buffer material sample between the upper mass and the tabletop type workbench, and the response sensor is arranged on the tabletop type workbench.
Preferably, the upper pressing frame comprises a pressing cross beam, a pressing screw rod, a pressing plate and two upright post screws, wherein the pressing screw rod and the two upright post screws penetrate through the pressing cross beam and are connected with the pressing cross beam, the pressing screw rod is positioned between the two upright post screws, the lower ends of the pressing screw rods are connected with the pressing plate, and the lower ends of the two upright post screws are connected with the table top type workbench or the vibrating table top.
Preferably, the upper mass comprises an upper cover plate, a mass upper base and a lower cover plate which are arranged and connected from top to bottom, a hollowed hole is formed in the mass upper base, and the upper end of the connecting rod sequentially extends into the lower cover plate and the mass upper base and is in threaded connection with the mass upper base.
Preferably, the buffer material sample detection device further comprises a limit column, wherein the lower end of the limit column is connected with the upper cover plate, and the buffer material sample between the upper pressure frame and the upper mass is sleeved outside the limit column.
Preferably, a threaded hole D is formed in the side face of the mass upper base, a connecting rod upper hole is formed in the upper end of the connecting rod, and a fastening screw A sequentially penetrates through the threaded hole D and the connecting rod upper hole to fasten the mass upper base and the connecting rod.
Preferably, the lower mass further comprises a lower mass base and a fastening nut, wherein the fastening nut is sleeved on the connecting rod and is in threaded connection with the connecting rod, the lower mass base is in threaded connection with the connecting rod, and a plurality of weight-type masses are located between the fastening nut and the lower mass base.
Preferably, a threaded hole B is formed in the side face of the lower mass base, a lower connecting rod hole is formed in the lower end of the connecting rod, and a fastening screw B sequentially penetrates through the threaded hole B and the lower connecting rod hole to fasten the lower mass base and the connecting rod.
Preferably, the desktop type workbench is of a four-upright-column desktop type symmetrical structure, the desktop type workbench comprises a workbench plane, a bottom frame and four workbench uprights, the upper ends of the workbench uprights are connected with the workbench plane, the lower ends of the workbench uprights are connected with the bottom frame, two ends of the workbench plane are respectively provided with a frame lug, the frame lugs are used for being connected with an upper pressing frame, the linear bearings are arranged in top through holes of the workbench plane, the bottom frame is connected with a vibrating table surface, the bottom frame is provided with anti-collision material limiting square holes, and the anti-collision material limiting square holes are used for placing anti-collision materials.
Compared with the prior art, the invention has the following technical effects:
1) The dumbbell type mass system divides the vibrating mass into an upper part and a lower part, the upper mass is unchanged all the time, the lower mass can be combined in a required way, the gravity center of the mass system in the mode is reduced, and the stability of the vibrating mass system is higher;
2) The dumbbell type mass system adopts a guide system with the connecting rod matched with the linear bearing, so that the mass system does not need to be worried about deflection, and meanwhile, the influence of friction on vibration is reduced to the greatest extent;
3) The lower mass of the dumbbell type mass system is convenient to combine;
4) The upper mass of the dumbbell type mass system is easy to disassemble and assemble, and the buffer material sample is convenient to install rapidly;
5) The upper pressing frame can be arranged on a table top type workbench or directly arranged on the table top of the vibrating table;
6) The anti-collision material can avoid damaging quality or a vibration system in the installation or vibration process;
7) The device can not only carry out a system consisting of two buffer material samples, but also carry out the self vibration transfer characteristic test of a single buffer material sample, the buffer material sample is directly limited by the connecting rod of the dumbbell-type mass system during the single test, the buffer material sample at the upper part is positioned by the limiting column during the test of the two buffer material samples, and the problem of displacement of the buffer material sample is avoided during the vibration process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a test apparatus for vibration transfer characteristics of a buffer material of a dumbbell-type mass system (an upper press frame is connected with a tabletop workbench);
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic diagram of a test apparatus for vibration transfer characteristics of a dumbbell-type mass system cushioning material of the present invention (an upper press frame is connected to a table top of a vibrating table);
FIG. 4 is a block diagram of the invention as applied to single layer buffer material sample testing;
FIG. 5 is an exploded view of FIG. 4;
FIG. 6 is a schematic view of the structure of the pressing frame of the present invention;
FIG. 7 is a schematic diagram of the dumbbell mass system of this invention;
FIG. 8 is an exploded view of FIG. 7;
FIG. 9 is a top view of the upper base of the present invention;
FIG. 10 is a cross-sectional view of an upper mass base of the present invention;
FIG. 11 is a three-dimensional block diagram of a table top work station of the present invention;
FIG. 12 is a second three-dimensional view of a table top work station according to the present invention;
wherein: 1. the device comprises an upper pressing frame, a dumbbell type mass system, a tabletop workbench, an anti-collision material, a vibrating table tabletop, bolts A and 7, a buffer material sample, an excitation sensor, a response sensor and a limit column, wherein the dumbbell type mass system, the tabletop workbench, the anti-collision material and the vibration table tabletop are arranged in sequence, and the buffer material sample, the excitation sensor and the response sensor are arranged in sequence;
11. the vertical column screw rod is 12, the compression cross beam is 13, the compression screw rod is 131, the square head is 14, the compression plate is 15, the nut group A is 16, the nut group B is 17, and the nuts are 17;
21. upper mass, 22. Connecting rod, 24. Lower mass;
211. bolts B,212, upper cover plate, 213, upper mass base, 214, fastening screws A,215, lower cover plate;
2131. hollow holes 2132, threaded holes C,2133, through holes B,2134 and threaded holes D;
221. connecting rod upper hole, 222. Connecting rod lower hole;
241. the weight type hydraulic device comprises a lower mass base 242, fastening screws B,243, weight type mass 244, fastening nuts, 245, threaded holes A,246 and threaded holes B;
31. the anti-collision device comprises a bottom frame, 32, a bottom frame through hole, 33, a workbench upright post, 34, a workbench plane, 35, a top through hole, 36, a frame lug, 37, a frame threaded hole, 38, a linear bearing and 39, and an anti-collision material limiting square hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the invention without any inventive effort, are intended to fall within the scope of the invention.
The invention aims to provide a vibration transfer characteristic test device for a buffer material of a dumbbell type mass system, which solves the problem of testing the vibration transfer characteristic of a system formed by a buffer material sample and the dumbbell type mass system in the vertical direction.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 12: the embodiment provides a dumbbell type mass system buffer material vibration transfer characteristic test device, which comprises an upper pressing frame 1, a dumbbell type mass system 2, a tabletop workbench 3, an anti-collision material 4, a vibrating table top 5, an excitation sensor 8 and a response sensor 9, wherein the tabletop workbench 3 is fixed at the center of the vibrating table top 5 through bolts A6, the upper pressing frame 1 is connected with the tabletop workbench 3 or the vibrating table top 5, the dumbbell type mass system 2 is of a dumbbell type structure, the dumbbell type mass system 2 comprises an upper mass 21, a connecting rod 22 and a lower mass 24, the upper mass 21 and the lower mass 24 are respectively connected with the upper end and the lower end of the connecting rod 22, the upper mass 21 and the lower mass 24 are both ends of the dumbbell type structure, the connecting rod 22 is a rod part of the dumbbell type structure, the connecting rod 22 is threaded at two ends and is a polished rod at the middle part, the connecting rod 22 is connected with the tabletop workbench 3 through a linear bearing 38, the lower mass 24 comprises a plurality of weight-type masses 243, the buffer material samples 7 are arranged between the upper pressing frame 1 and the upper mass 21 and between the upper mass 21 and the tabletop workbench 3, the buffer material samples 7 (upper buffer material samples 7) between the upper pressing frame 1 and the upper mass 21 are connected with the upper mass 21, the connecting rod 22 penetrates through the buffer material samples 7 (lower buffer material samples 7) between the upper mass 21 and the tabletop workbench 3, the excitation sensor 8 is arranged at the edge of the top plane of the tabletop workbench 3, and when the buffer material samples 7 are two, the response sensor 9 is arranged at the edge of the top plane of the upper mass 21. When the buffer material sample 7 is one, the response sensor 9 is arranged at the center of the top plane of the upper mass 21.
Specifically, in the present embodiment, the upper press frame 1, the dumbbell type mass system 2, and the cushioning material sample 7 are coaxially arranged.
In this embodiment, the upper pressing frame 1 includes a pressing beam 12, a pressing screw 13, a pressing plate 14, and two upright screws 11, where the two upright screws 11 pass through a through hole of the pressing beam 12 and are symmetrically connected with the pressing beam 12 through a nut group a15, two nuts 17 are respectively installed at bottoms of the two upright screws 11, the pressing screw 13 is located between the two upright screws 11, the pressing screw 13 is installed in a middle threaded hole of the pressing beam 12, a nut group B16 is installed on upper and lower sides of the pressing screw 13, a square head 131 is provided at a top end of the pressing screw 13, a lower end of the pressing screw 13 is connected with the pressing plate 14, the pressing plate 14 presses the buffer material sample 7 between the upper pressing frame 1 and the upper mass 21, and a lower end of the two upright screws 11 is connected with the table top 3 or the vibrating table top 5.
In this embodiment, the upper mass 21 is a three-layer combined structure, the upper mass 21 includes an upper cover plate 212, an upper mass base 213 and a lower cover plate 215 which are disposed from top to bottom, three layers of the upper cover plate 212, the upper mass base 213 and the lower cover plate 215 are fixed together by bolts B211, the bolts B211 extend into through holes B2133 of the upper mass base 213, four symmetrical circular hollow holes 2131 are disposed in the upper mass base 213, the weight of the upper mass base 213 can be reduced to the greatest extent, and the upper end of the connecting rod 22 sequentially extends into the lower cover plate 215 and the upper mass base 213 and is in threaded connection with threaded holes C2132 of the upper mass base 213.
The embodiment further comprises a limiting column 10, the limiting column 10 is a limiting column, the lower end of the limiting column 10 is in threaded connection with the center of the upper cover plate 212, a circular through hole is formed in the center of the buffer material sample 7 between the upper pressing frame 1 and the upper mass 21, and the buffer material sample 7 between the upper pressing frame 1 and the upper mass 21 is sleeved outside the limiting column 10.
In this embodiment, a threaded hole D2134 is provided on a side surface of the upper mass base 213, an upper connecting rod hole 221 is provided at an upper end of the connecting rod 22, and a fastening screw a214 sequentially passes through the threaded hole D2134 and the upper connecting rod hole 221 to fasten the upper mass base 213 and the connecting rod 22.
In this embodiment, the lower mass 24 is a combined structure, the lower mass 24 further includes a lower mass base 241 and a fastening nut 244, the fastening nut 244 is sleeved on the connecting rod 22 and is in threaded connection with the connecting rod 22, the lower mass base 241 is in a cylindrical structure, a threaded hole a245 is formed in the center of the lower mass base 241, the lower mass base 241 is mounted at the end of the connecting rod 22 through the threaded hole a245, the weight-type masses 243 are in a semicircular structure, two weight-type masses 243 are combined into a group, a plurality of groups of weight-type masses 243 are combined with the lower mass base 241 to realize different dumbbell-type mass system 2 mass combinations, the weight-type masses 243 are located between the fastening nut 244 and the lower mass base 241, the fastening nut 244 compresses the weight-type masses 243 with the lower mass base 241, a threaded hole B246 is formed in the side surface of the lower mass base 241, a lower connecting rod hole 222 is formed in the lower end of the connecting rod 22, and the fastening screw B242 sequentially passes through the threaded hole B246 and the lower connecting rod hole 222 to realize fastening of the lower mass base 241 and the connecting rod 22, and prevent the lower mass base 241 from rotating with the connecting rod 22.
In this embodiment, the desktop-type workbench 3 is a four-upright-column desktop-type symmetrical structure, the desktop-type workbench 3 comprises a workbench plane 34, a bottom frame 31 and four workbench uprights 33, the upper ends of the four workbench uprights 33 are all connected with the workbench plane 34, the lower ends of the four workbench uprights 33 are all connected with the bottom frame 31, the four workbench uprights 33 and the workbench plane 34 form a main body of the desktop-type workbench 3, the center of the workbench plane 34 is provided with a top through hole 35, a linear bearing 38 is fixed from the bottom of the workbench plane 34 through the top through hole 35, two ends of the workbench plane 34 are respectively provided with a frame lug 36, the frame lug 36 is provided with a frame threaded hole 37, the frame lug 36 is used for being connected with a upright post screw 11 of the upper pressing frame 1, the linear bearing 38 is arranged in the top through hole 35 of the workbench plane 34, the bottom frame 31 is provided with a bottom frame through hole 32 and an anti-collision material limiting square hole 39, the bottom frame through hole 32 is used for fixing the desktop-type workbench 3 and the vibrating table 5, and the anti-collision material limiting square hole 39 is used for placing the anti-collision material 4.
Application example 1
The test sample is a monolithic buffer material sample 7, and referring to fig. 4 to 12, the step in testing the monolithic buffer material sample 7:
step one, fixing a tabletop workbench 3: placing the tabletop workbench 3 at the center of the vibrating table top 5, and fixing the tabletop workbench 3 and the vibrating table top 5 together through a bottom frame through hole 32 of a bottom frame 31 of the tabletop workbench 3 by bolts A6;
step two, mounting of the anti-collision material 4: embedding the anti-collision material 4 into an anti-collision material limiting square hole 39 of the bottom frame 31 of the desktop workbench 3;
step three, assembly of the upper mass 21 of the dumbbell mass system 2: the upper cover plate 212, the upper mass base 213 and the lower cover plate 215 are fixed together through bolts B211, and fastening screws A214 are installed in threaded holes D2134 of the upper mass base 213;
fourth, mounting of the connecting rod 22 and the lower mass 24 of the dumbbell mass system 2: inserting the connecting rod 22 into the linear bearing 38 of the tabletop workbench 3; the lower mass 24 is arranged at the bottom end of the connecting rod 22, the fastening nut 244 is screwed into the screw thread at the end part of the connecting rod 22, then the lower mass base 241 is screwed into the screw thread of the connecting rod 22 through the screw hole A245, when the lower connecting rod hole 222 at the end part of the connecting rod 22 is aligned with the screw hole B246 of the lower mass base 241, the fastening screw B242 is arranged in the screw hole B246 of the lower mass base 241 and penetrates through the lower connecting rod hole 222, the lower mass base 241 and the connecting rod 22 do not rotate any more, and a supporting material is placed at the bottom of the lower mass base 241, so that the top end of the connecting rod 22 extends out of the top plane of the tabletop workbench 3;
step five, installing a buffer material sample 7 at the lower part; the buffer material sample 7 is placed on a connecting rod 22 on the top plane of the tabletop workbench 3 through a central round hole of the buffer material sample 7;
step six, mounting the upper mass 21 of the dumbbell mass system 2: the assembled upper mass 21 is installed into the top end thread of the connecting rod 22 through the threaded hole C2132 of the upper mass base 213, when the threaded hole D2134 of the upper mass base 213 is aligned with the connecting rod upper hole 221 at the top end of the connecting rod 22, the fastening screw A214 is screwed in through the connecting rod upper hole 221 at the top end of the connecting rod 22, and the upper mass 21 cannot rotate with the connecting rod 22 any more;
step seven, adjusting the mass of the dumbbell type mass system 2: a weight type mass 243 is installed on the lower mass base 241 in pairs, and the weight type mass 243 is fixed with the lower mass base 241 by a fastening nut 244;
step eight, removing the supporting material at the bottom of the lower mass base 241 in step four: dumbbell mass system 2 relies on gravity to press against lower cushioning material sample 7.
At this time, the whole single buffer material sample 7 and the dumbbell type mass system 2 are in a definite working state, namely, the vibration table can be started to carry out the vibration transmission characteristic test of the single buffer material sample 7, and the dumbbell type mass system 2 moves vertically and freely under the guiding action of the linear bearing 38 of the tabletop type workbench 3 in the vibration process. The vibration transfer characteristic parameters of the single buffer material sample 7 are calculated according to the data of the response sensor 9 and the excitation sensor 8.
Referring to fig. 4 to 5 and 7 to 9, the step of replacing the monolithic cushioning material sample 7:
step one, lifting the dumbbell type mass system 2 upwards, and placing a supporting material at the bottom of the lower mass base 241;
step two, disassembly of the upper mass 21 of the dumbbell mass system 2: screwing the fastening screw a214 out of the connecting rod upper hole 221 passing through the top end of the connecting rod 22; the upper mass 21 is unscrewed from the top end of the connecting rod 22;
step three, taking out the buffer material sample 7 at the lower part of which the test is completed, and putting a new buffer material sample 7 at the lower part;
step four, mounting of the upper mass 21 of the dumbbell mass system 2: the assembled upper mass 21 is installed into the top end thread of the connecting rod 22 through the threaded hole C2132 of the upper mass base 213, when the threaded hole D2134 of the upper mass base 213 is aligned with the connecting rod upper hole 221 at the top end of the connecting rod 22, the fastening screw A214 is screwed in through the connecting rod upper hole 221 at the top end of the connecting rod 22, and the upper mass 21 cannot rotate with the connecting rod 22 any more;
step five, adjusting the mass of the dumbbell type mass system 2: a weight type mass 243 is installed on the lower mass base 241 in pairs, and the weight type mass 243 is fixed with the lower mass base 241 by a fastening nut 244;
step six, removing the supporting material at the bottom of the lower mass base 241 in step one: dumbbell mass system 2 relies on gravity to press against a new lower sample 7 of cushioning material.
Application example two
The test samples were two samples 7 of cushioning material, and referring to fig. 1, fig. 2, fig. 3, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, and fig. 12, the steps of testing the two samples 7 of cushioning material were as follows:
step one, fixing a tabletop workbench 3: placing the tabletop workbench 3 at the center of the vibrating table top 5, and fixing the tabletop workbench 3 and the vibrating table top 5 together through a bottom frame through hole 32 of a bottom frame 31 of the tabletop workbench 3 by bolts A6;
step two, mounting of the anti-collision material 4: embedding the anti-collision material 4 into an anti-collision material limiting square hole 39 of the bottom frame 31 of the desktop workbench 3;
step three, assembly of the upper mass 21 of the dumbbell mass system 2: the upper cover plate 212, the upper mass base 213 and the lower cover plate 215 are fixed together through bolts B211, and fastening screws A214 are installed in threaded holes D2134 of the upper mass base 213;
fourth, mounting of the connecting rod 22 and the lower mass 24 of the dumbbell mass system 2: inserting the connecting rod 22 into the linear bearing 38 of the tabletop workbench 3; the lower mass 24 is arranged at the bottom end of the connecting rod 22, the fastening nut 244 is screwed into the screw thread at the end part of the connecting rod 22, then the lower mass base 241 is screwed into the screw thread of the connecting rod 22 through the screw hole A245, when the lower connecting rod hole 222 at the end part of the connecting rod 22 is aligned with the screw hole B246 of the lower mass base 241, the fastening screw B242 is arranged in the screw hole B246 of the lower mass base 241 and penetrates through the lower connecting rod hole 222, the lower mass base 241 and the connecting rod 22 do not rotate any more, and a supporting material is placed at the bottom of the lower mass base 241, so that the top end of the connecting rod 22 extends out of the top plane of the tabletop workbench 3;
step five, installing a buffer material sample 7 at the lower part; the buffer material sample 7 is placed on a connecting rod 22 on the top plane of the tabletop workbench 3 through a central round hole of the buffer material sample 7;
step six, mounting the upper mass 21 of the dumbbell mass system 2: the assembled upper mass 21 is installed into the top end thread of the connecting rod 22 through the threaded hole C2132 of the upper mass base 213, when the threaded hole D2134 of the upper mass base 213 is aligned with the connecting rod upper hole 221 at the top end of the connecting rod 22, the fastening screw A214 is screwed in through the connecting rod upper hole 221 at the top end of the connecting rod 22, and the upper mass 21 cannot rotate with the connecting rod 22 any more;
step seven, adjusting the mass of the dumbbell type mass system 2: a weight type mass 243 is installed on the lower mass base 241 in pairs, and the weight type mass 243 is fixed with the lower mass base 241 by a fastening nut 244;
step eight, removing the supporting material at the bottom of the lower mass base 241 in step four: the dumbbell mass system 2 relies on gravity to press against the lower sample of cushioning material 7;
step nine, fixing the upper pressing frame 1: two modes of fixing the upper pressing frame 1 are as follows: is fixed on the tabletop workbench 3 and the vibrating table top 5; first, the upper pressing frame 1 is fixed to the table top type table 3: two upright post screws 11 of the assembled upper pressing frame 1 are arranged in frame threaded holes 37 of frame lugs 36 of the tabletop workbench 3, and the upright post screws 11 are locked by nuts 17; second, the upper press frame 1 is fixed to the vibrating table top 5: two upright post screws 11 of the assembled upper pressing frame 1 are arranged in threaded holes of the table top 5 of the vibrating table, and the upright post screws 11 are locked by nuts 17;
step ten, mounting of the upper buffer material sample 7: mounting the limit post 10 in the top central hole of the upper cover plate 212 of the dumbbell type mass system 2; placing the buffer material sample 7 with the circular through hole at the top limit column 10 of the dumbbell-shaped mass system 2, and inserting the limit column 10 into the circular through hole of the buffer material sample 7;
step eleven, adjusting the pressing plate 14 in the upper pressing frame 1: the nut group B16 in the upper pressing frame 1 is loosened, the pressing screw 13 is in a free rotation state, the square head 131 at the top end of the pressing screw 13 is rotated by a torque wrench to press the pressing plate 14 and the buffer material sample 7 at the upper part, and the nut group B16 is screwed after the set pressure is reached.
At this time, the two buffer material samples 7 and the dumbbell type mass system 2 are in a certain working state, namely, the vibration table can be started to perform vibration transmission characteristic test on the two buffer material samples 7, and the dumbbell type mass system 2 moves vertically and freely under the guiding action of the linear bearing 38 of the tabletop type workbench 3 in the vibration process. The vibration transmission characteristic parameters of the two-block buffer material system are calculated according to the data of the response sensor 9 and the excitation sensor 8.
Referring to fig. 1 to 2 and 4, the steps in the replacement of two samples 7 of cushioning material are:
step one, adjustment of the pressing plate 14 in the upper pressing frame 1: loosening the nut group B16 in the upper pressing frame 1 to enable the pressing screw 13 to be in a free rotation state, and rotating the pressing screw 13 at the square head 131 at the top end of the pressing screw 13 by using a wrench to enable the pressing plate 14 to be away from the upper buffer material sample 7;
step two, taking out the upper buffer material sample 7: taking out the buffer material sample 7 mounted on the upper part of the limit column 10;
step three, replacing the lower buffer material sample 7: repeating the step of replacing the single block of buffer material sample 7 in application example one;
step four, new upper buffer material sample 7 is installed: mounting the limit post 10 in the top central hole of the upper cover plate 212 of the dumbbell type mass system 2; placing a new upper buffer material sample 7 with a circular through hole at the top limit column 10 of the dumbbell-shaped mass system 2, and inserting the limit column 10 into the circular through hole of the new upper buffer material sample 7;
step five, adjusting the pressurizing plate 14 in the upper pressing frame 1: the nut group B16 in the upper pressing frame 1 is loosened, the pressing screw 13 is in a free rotation state, the square head 131 at the top end of the pressing screw 13 is rotated by a torque wrench to press the pressing plate 14 against the new upper buffer material sample 7, and the nut group B16 is screwed after the set pressure is reached.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (8)
1. A dumbbell type mass system buffer material vibration transfer characteristic test device is characterized in that: including last pressure frame, dumbbell formula mass system, desktop formula workstation, anticollision material, shaking table mesa, excitation sensor and response sensor, the desktop formula workstation sets up on the shaking table mesa, go up the pressure frame with desktop formula workstation or shaking table mesa is connected, dumbbell formula mass system includes upper portion quality, connecting rod and lower part quality, upper portion quality with lower part quality respectively with the upper end and the lower extreme of connecting rod are connected, the connecting rod with the desktop formula workstation passes through linear bearing and connects, the lower part quality includes a plurality of weight formula quality, go up between the pressure frame with between the upper portion quality, upper portion quality with all be used for setting up the buffer material sample between the desktop formula workstation, go up between the pressure frame with buffer material sample between the upper portion quality with upper portion quality is connected, the connecting rod passes upper portion quality with buffer material sample between the desktop formula workstation, the excitation sensor sets up on the desktop formula workstation, the response sensor is in upper portion.
2. The dumbbell type mass system buffer material vibration transfer characteristic test apparatus of claim 1, wherein: the upper pressing frame comprises a pressing cross beam, a pressing screw rod, a pressing plate and two upright post screws, wherein the pressing screw rod and the two upright post screws penetrate through the pressing cross beam and are connected with the pressing cross beam, the pressing screw rod is located between the two upright post screws, the lower ends of the pressing screw rods are connected with the pressing plate, and the lower ends of the two upright post screws are connected with the tabletop workbench or the vibrating table surface.
3. The dumbbell type mass system buffer material vibration transfer characteristic test apparatus of claim 1, wherein: the upper mass comprises an upper cover plate, a mass upper base and a lower cover plate which are arranged and connected from top to bottom, a hollowed hole is formed in the mass upper base, and the upper end of the connecting rod sequentially extends into the lower cover plate and the mass upper base and is in threaded connection with the mass upper base.
4. The dumbbell type mass system damping material vibration transfer characteristic test apparatus of claim 3, wherein: the buffer material sample sleeve is characterized by further comprising a limiting column, wherein the lower end of the limiting column is connected with the upper cover plate, and the buffer material sample sleeve between the upper pressing frame and the upper mass is sleeved on the outer side of the limiting column.
5. The dumbbell type mass system damping material vibration transfer characteristic test apparatus of claim 3, wherein: the side of the base on the quality is provided with a threaded hole D, the upper end of the connecting rod is provided with a connecting rod upper hole, and a fastening screw A sequentially penetrates through the threaded hole D and the connecting rod upper hole to fasten the base on the quality and the connecting rod.
6. The dumbbell type mass system buffer material vibration transfer characteristic test apparatus of claim 1, wherein: the lower mass further comprises a mass lower base and a fastening nut, wherein the fastening nut is sleeved on the connecting rod and is in threaded connection with the connecting rod, the mass lower base is in threaded connection with the connecting rod, and a plurality of weight type masses are located between the fastening nut and the mass lower base.
7. The dumbbell type mass system damping material vibration transfer characteristic test apparatus of claim 6, wherein: the side of the base under the quality is provided with a threaded hole B, the lower end of the connecting rod is provided with a connecting rod lower hole, and a fastening screw B sequentially penetrates through the threaded hole B and the connecting rod lower hole to fasten the base under the quality and the connecting rod.
8. The dumbbell type mass system buffer material vibration transfer characteristic test apparatus of claim 1, wherein: the desktop type workbench is of a four-upright-column desktop type symmetrical structure, the desktop type workbench comprises a workbench plane, a bottom frame and four workbench uprights, the upper ends of the workbench uprights are connected with the workbench plane, the lower ends of the workbench uprights are connected with the bottom frame, two ends of the workbench plane are respectively provided with a frame lug, the frame lugs are used for being connected with an upper pressing frame, the linear bearings are arranged in top through holes of the workbench plane, the bottom frame is connected with the vibrating table, the bottom frame is provided with anti-collision material limiting square holes, and the anti-collision material limiting square holes are used for placing anti-collision materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310208318.8A CN116087341A (en) | 2023-03-07 | 2023-03-07 | Dumbbell type mass system buffer material vibration transfer characteristic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310208318.8A CN116087341A (en) | 2023-03-07 | 2023-03-07 | Dumbbell type mass system buffer material vibration transfer characteristic test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116087341A true CN116087341A (en) | 2023-05-09 |
Family
ID=86210318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310208318.8A Pending CN116087341A (en) | 2023-03-07 | 2023-03-07 | Dumbbell type mass system buffer material vibration transfer characteristic test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116087341A (en) |
-
2023
- 2023-03-07 CN CN202310208318.8A patent/CN116087341A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110095240B (en) | Auxiliary loading device for rigidity test of turbine engine case | |
| CN110132739B (en) | Micro fatigue test normal load loading device and method | |
| CN211061475U (en) | Fixing device for vibration transmissibility test of table-board gravity type buffering material | |
| CN102087186A (en) | Fretting fatigue test platform | |
| CN113335560B (en) | Complex load box section or barrel section test device and method | |
| CN108593270A (en) | A kind of single-degree-of-freedom vibration absorber test platform | |
| CN210604226U (en) | Electronic dynamic and static universal testing machine | |
| US3699807A (en) | Apparatus for vibrational testing of articles | |
| CN203894112U (en) | Axial compression fatigue testing device | |
| CN116087341A (en) | Dumbbell type mass system buffer material vibration transfer characteristic test device | |
| CN109612864B (en) | Sliding friction fatigue test device for rotary bending fatigue machine | |
| CN105043703A (en) | General shock absorber dynamic and static test stand | |
| CN205642774U (en) | Vibration test analogue means of drilling derrick and base system | |
| CN112284660A (en) | Bent torsion composite load test device of bent axle | |
| CN212206879U (en) | Tensile and compressive stress test device for bonding interface of solid rocket engine | |
| CN209878291U (en) | Underneath type driving piezoelectric high-frequency fatigue testing machine | |
| CN113075049B (en) | Variable-frequency variable-strength dynamic and static combined loading rock mechanical testing machine and testing method | |
| CN214374012U (en) | Building material fatigue testing machine | |
| CN114166646A (en) | Testing device and testing method for creep and relaxation characteristics of magnetorheological elastomer under wide magnetic field | |
| CN107576567A (en) | Experiment porch and method of testing for truss core composite thin plate mechanical property composite test | |
| CN110220686A (en) | Keep diesel oil synchronous generator rotor magnetic pole tie-rod power experimental rig and method | |
| CN208350511U (en) | A kind of fixture for diagonal brace fatigue test | |
| CN207623129U (en) | Fastener bending fatigue testing device | |
| CN219798684U (en) | Vertical shock absorber test fixture | |
| CN205483799U (en) | A adjustable rigidity anchor clamps for high frequency fatigue testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |