CN211061475U - Fixing device for vibration transmissibility test of table-board gravity type buffering material - Google Patents
Fixing device for vibration transmissibility test of table-board gravity type buffering material Download PDFInfo
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- CN211061475U CN211061475U CN201921951843.4U CN201921951843U CN211061475U CN 211061475 U CN211061475 U CN 211061475U CN 201921951843 U CN201921951843 U CN 201921951843U CN 211061475 U CN211061475 U CN 211061475U
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 230000005484 gravity Effects 0.000 title claims abstract description 8
- 230000003139 buffering effect Effects 0.000 title description 4
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 238000012546 transfer Methods 0.000 abstract description 6
- 238000012856 packing Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
To packing with buffer material vibration transfer characteristic test direction quality piece support fixed system to the requirement height of shaking table system, the design degree of difficulty is big, the installation accuracy is high, the cost of manufacture is high not enough, the utility model discloses a mesa gravity type buffer material vibration transmissibility test fixing device who is fixed in the shaking table mesa has been developed. The device consists of a stand column (4), a locking nut (5), a guide rod (6), a cross beam (7), a linear bearing (9), a mass block (10), a sample limiting frame (12) and symmetrical T-shaped groove nuts (13); all the fixing devices are arranged on the table top of the vibration table, the mass block is directly arranged on the upper part of the buffer material, and the mass block is guided by a guide rod penetrating through the linear bearing of the cross beam. The device overcomes the defects of the existing device, simultaneously does not need to transform the vibration table, can be directly installed on the table top of the vibration table, is convenient to disassemble, and does not influence other applications of the vibration table. The device is suitable for the research and use of the vibration transmission characteristics of the buffer material.
Description
Technical Field
The invention relates to the field of material performance test, mainly relates to the performance test of a buffering material, and particularly relates to a table-board gravity type fixing device for a vibration transmissibility test of the buffering material.
Background
The vibration transmission characteristic of the packaging material is one of important performances required by the protection of transport packaging, and the transmission rate of the system, namely the dimensionless ratio of the response amplitude to the excitation amplitude of the system in steady forced vibration, is obtained through a vibration transmission characteristic experiment. The vibration transfer characteristic test system of the packaging material is composed of a buffer material and a mass block, acceleration sensors are respectively arranged on a vibration table and the mass block during test, the excitation acceleration and the response acceleration of the system along with the change of frequency are recorded, and a relation curve between the transfer rate and the frequency of the system, namely the vibration transfer characteristic of the system, is obtained through the ratio of the response acceleration and the excitation acceleration under different frequencies. The resonance frequency of the system, the vibration transmissibility value of the system under different frequencies and the damping parameter of the material can be determined through the relation curve of the transmissibility and the frequency.
In the GB/T8169-2008 standard, a buffer material-mass block-buffer material (sandwich structure) system is compressed by a compression frame fixed on a table top of a vibration table, the stress of an upper buffer material and a lower buffer material is different in the test process, and the test mode is suitable for the vibration transmission characteristic evaluation of a package and cannot simply reflect the vibration transmission characteristic of the materials.
University of Australia victoria (A method of Vibration transmission of damping Materials. Melbourne: Victoria university,2007: 54; A Study of Nonlinear Effects in a damping-Product systems Vibration transmission Effects with the Reverse Multiple Input-Single Output Technology. packing Technology & Science, 2013; evaluation of dynamic Properties of non-linear packing Materials Using a Reverse Multiple Input/Single base application [ J ] packing Technology, Science) A method of Vibration transmission of damping Materials, fixing a damping guide system, and mounting a damping guide system: 1) a fixed support is arranged outside the table top (table body) of the vibration table, the mass block is matched with the fixed support through a smooth guide rod and a sliding bearing, the guide rod penetrates through the support to enable the mass block to move only in the vertical direction, and the mass block is prevented from deviating or falling off from a buffer material in the vibration process; 2) only one layer of buffer material is arranged, the buffer material, the mass block and the vibration table are not bonded by adhesive, and only the acting force of the mass block is applied in the vibration process; 3) the response acceleration sensor is arranged at the top end of the guide rod. In the mode vibration process, only the mass block has influence on the pressure of the lower buffer material, and the influence of the frame pressing external force on the system is avoided; without the influence of the upper cushioning material on the vibration system, the mass is completely under the vibration isolation of the lower cushioning material. The data obtained by testing the system is therefore entirely the vibration transfer characteristics of the underlying cushioning material.
Compared with the fixing device in GB/T8169-. Therefore, the device is difficult to design, high in installation precision and high in manufacturing cost, and is not beneficial to convenient application of the mode in a laboratory.
Disclosure of Invention
Aiming at the defects of high requirements of a vibration transmission characteristic test guide mass block support fixing system of a buffer material for packaging on a vibration table system, high design difficulty, high installation precision and high manufacturing cost, the invention develops a table surface gravity type buffer material vibration transmission test fixing device fixed on a table surface of the vibration table.
The technical scheme adopted by the invention for solving the technical problems is as follows: a table-board gravity type buffer material vibration transmissibility test fixing device comprises a stand column (4), a locking nut (5), a guide rod (6), a cross beam (7), a linear bearing (9), a mass block (10), a sample limiting frame (12) and symmetrical T-shaped groove nuts (13);
the bottoms of the pair of upright posts (4) are symmetrically fixed on the table top (2) of the vibration table through bolts;
the cross beam (7) is fixed with the upper part of the upright post (4) through symmetrical T-shaped groove nuts (13) arranged in the grooves of the upright post (4) by bolts;
the linear bearing (9) is fixed at the upper middle part of the cross beam (7);
the circular sample limiting frame (12) is fixed at the center of the table top (2) of the vibration table;
the mass block (10) is arranged in the middle of the sample limiting frame (12);
the guide rod (6) penetrates through the cross beam (7) and the linear bearing (9) and is fixed on the top of the mass block (10) through the locking nut (5).
The invention has the beneficial effects that: 1) the defect that a national standard fixing device can only test a sandwich structure buffer material system is overcome, and the buffer characteristic data of the buffer material is directly obtained through testing; 2) the guide mass block support can be installed directly by means of the table top of the existing vibrating table without modifying the existing vibrating table, so that the guide mass block support fixing system is prevented from modifying the outside of the vibrating table, the frame fixing system is not required to be installed on the base outside the vibrating table, and the existing vibrating table system is not required to be modified; 3) the vibration table is directly mounted on the table top of the vibration table, is convenient to dismount, and does not influence other applications of the vibration table; 4) in the vibration process of the vibration table, the device and the table body synchronously move, and due to the application of the linear bearing system, on one hand, the influence of external force on the mass block is avoided to the maximum extent, on the other hand, the mass block can only move in the vertical direction, and the tested data is guaranteed to be the response of the mass block to the excitation of the vibration table.
Drawings
Fig. 1 is a front view of a table-board gravity type damping material vibration transmissibility test fixing device of the invention.
Fig. 2 is a top view of fig. 1.
In the figure: 1. the vibration table comprises a vibration table body, 2 a vibration table top, 3 samples, 4 columns, 5 locking nuts, 6 guide rods, 7 cross beams, 8 response sensors, 9 linear bearings, 10 mass blocks, 11 table top vibration sensors, 12 sample limiting frames and 13 symmetrical T-shaped groove nuts.
Detailed Description
Referring to fig. 1 and 2, a vibration table top (2) is fixed to the vibration table body (1).
Referring to attached drawings 1 and 2, the device consists of upright columns (4), locking nuts (5), guide rods (6), cross beams (7), linear bearings (9), mass blocks (10), sample limiting frames (12) and symmetrical T-shaped groove nuts (13), the bottoms of a pair of upright columns (4) are directly fixed on a vibrating table top (2) through bolts, the cross beams (7) are fixed with the upright columns (4) through the symmetrical T-shaped groove nuts (13) arranged in grooves of the upright columns (4) at the upper parts of the upright columns (4), and the linear bearings (9) are fixed in the middles of the cross beams (7); a circular sample limiting frame (12) is fixed at the center of a table top (2) of a vibrating table, a sample (3) is arranged in the sample limiting frame (12), a mass block (10) is arranged on the upper portion of the sample (3), and a guide rod (6) penetrating through a cross beam (7) and a linear bearing (9) is fixed at the top of the mass block (10) through a locking nut (5).
Example vibration transfer characteristic test of cushioning Material
After the tested sample (3) and the corresponding mass block (10) are determined, adjusting the height position of the cross beam (7) and fixing according to the sum of the thicknesses of the tested sample and the corresponding mass block; placing a sample (3) in a sample limit frame (12), then placing a mass block (10) on the top of the sample (3), and fixing the mass block (10) and a guide rod (6) together through a locking nut (5); a table top vibration sensor (11) and a response sensor (8) are respectively arranged on the table top (2) of the vibration table and at the top end of the guide rod (6).
And starting the vibration table, namely recording the excitation of the table top and the response data of the mass block during vibration, so as to obtain the transmission characteristic curve of the vibration damping system with the change of the frequency under the load by the damping material.
Claims (1)
1. A table-board gravity type buffer material vibration transmissibility test fixing device is characterized by comprising an upright post (4), a locking nut (5), a guide rod (6), a cross beam (7), a linear bearing (9), a mass block (10), a sample limiting frame (12) and symmetrical T-shaped groove nuts (13);
the bottoms of the pair of upright posts (4) are symmetrically fixed on the table top (2) of the vibration table through bolts;
the cross beam (7) is fixed with the upper part of the upright post (4) through symmetrical T-shaped groove nuts (13) arranged in the grooves of the upright post (4) by bolts;
the linear bearing (9) is fixed at the upper middle part of the cross beam (7);
the sample limit frame (12) is fixed at the central position of the table top (2) of the vibration table;
the mass block (10) is arranged in the middle of the sample limiting frame (12);
the guide rod (6) penetrates through the cross beam (7) and the linear bearing (9) and is fixed on the top of the mass block (10) through the locking nut (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951843.4U CN211061475U (en) | 2019-11-13 | 2019-11-13 | Fixing device for vibration transmissibility test of table-board gravity type buffering material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951843.4U CN211061475U (en) | 2019-11-13 | 2019-11-13 | Fixing device for vibration transmissibility test of table-board gravity type buffering material |
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| CN211061475U true CN211061475U (en) | 2020-07-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532779A (en) * | 2021-08-26 | 2021-10-22 | 青岛科技大学 | Fixing device for vibration transmissibility test of table top buffering material |
| CN113532780A (en) * | 2021-08-26 | 2021-10-22 | 青岛科技大学 | Loose joint screw type quick combination square quality system with guide device |
| CN113532781A (en) * | 2021-08-26 | 2021-10-22 | 青岛科技大学 | Magnetic type quick-combination square mass system with guide device |
| CN113640383A (en) * | 2021-08-26 | 2021-11-12 | 青岛科技大学 | Magnetic type rapid combination circular mass system with guide rod |
| CN113701972A (en) * | 2021-08-26 | 2021-11-26 | 青岛科技大学 | Slipknot screw type rapid combination circular quality system with guide rod |
-
2019
- 2019-11-13 CN CN201921951843.4U patent/CN211061475U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532779A (en) * | 2021-08-26 | 2021-10-22 | 青岛科技大学 | Fixing device for vibration transmissibility test of table top buffering material |
| CN113532780A (en) * | 2021-08-26 | 2021-10-22 | 青岛科技大学 | Loose joint screw type quick combination square quality system with guide device |
| CN113532781A (en) * | 2021-08-26 | 2021-10-22 | 青岛科技大学 | Magnetic type quick-combination square mass system with guide device |
| CN113640383A (en) * | 2021-08-26 | 2021-11-12 | 青岛科技大学 | Magnetic type rapid combination circular mass system with guide rod |
| CN113701972A (en) * | 2021-08-26 | 2021-11-26 | 青岛科技大学 | Slipknot screw type rapid combination circular quality system with guide rod |
| CN113532781B (en) * | 2021-08-26 | 2022-10-28 | 青岛科技大学 | Magnetic type quick-combination square mass system with guide device |
| CN113701972B (en) * | 2021-08-26 | 2024-01-30 | 青岛科技大学 | Loose-knot screw type quick-combination circular quality system with guide rod |
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