CN112611529A - Vibration test ability promotes anchor clamps - Google Patents
Vibration test ability promotes anchor clamps Download PDFInfo
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- CN112611529A CN112611529A CN202011307755.8A CN202011307755A CN112611529A CN 112611529 A CN112611529 A CN 112611529A CN 202011307755 A CN202011307755 A CN 202011307755A CN 112611529 A CN112611529 A CN 112611529A
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- single machine
- vibration
- clamp
- vibration test
- clamp base
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a clamp for improving the vibration test capacity, belongs to the field of vibration tests, and aims to respectively mount A, B, C types of single machines in a household. Wherein A is arranged at the opposite side of the clamp seat, and one single machine A rotates 90 degrees laterally relative to the other single machine A, so that X, Y directions can be ensured to be completed simultaneously in one vibration experiment; x, Y directions can be respectively completed for the clamp B, C in one experiment; when the base of the clamp table rotates in one direction, the vibration test of the X, Y, Z direction of the single machine A and the X, Y direction of the single machine B, C can be simultaneously completed; the invention improves the convenient, rapid and efficient performance of the multi-single-machine multi-direction vibration test, the connection mode among all parts ensures that the single machine and the vibration table are connected more firmly, the vibration test data is more accurate, and the vibration test in X, Y, Z directions can be simultaneously realized by a plurality of single machines.
Description
Technical Field
The invention belongs to the field of vibration tests, and particularly relates to a clamp for improving vibration test capability.
Background
When vibration testing multiple single machines, it was found that the testing process required X, Y, Z-directional vibration testing of a batch of multiple single machines. After each direction is carried out, the single machine is detached for reversing, and then the machine is installed again for testing. Therefore, the time and the labor are consumed, and the single machine is disassembled for many times, so that the service life of the single machine is greatly influenced. At present, the vibration test fixture for multi-unit and multi-direction simultaneous tests is not developed.
Disclosure of Invention
Aiming at the blank in the prior art, the invention designs a fixed vibration clamp device, and realizes a stable, efficient and convenient single-machine clamping tool in the multi-single-machine vibration test process.
The invention is realized by the following steps:
a vibration test capability improving clamp comprises a clamp base and is characterized in that two single machines A, one single machine B and one single machine C are respectively arranged above the clamp base in four directions; in four directions, the two single machines A are arranged back to back; one single machine B and one single machine C are arranged back to back; two single machines A arranged back to back are set as a first single machine A and a second single machine A; first stand-alone A pass through stand-alone A front connector and stand-alone A rear joint and fix the top at the anchor clamps base, the second stand-alone A that sets up back to back rotates 90 for first stand-alone A side direction, and the front joint of fixed second stand-alone A and rear joint installation direction side direction are rotatory 90, this is because stand-alone A, B, C's working property decides, stand-alone A can bear the vibration of X, Y, Z three directions when actual work, so need carry out the test in X, Y, Z three directions. The stand-alone unit B, C only receives X, Y directional vibration during actual operation, so that only X, Y directional vibration test is required. Since the stand-alone A has one more test direction, the stand-alone A needs to be rotated by 90 degrees at the back-to-back installation position of the stand-alone A.
The single machine B is fixed above the clamp base by utilizing a single machine B front joint and a single machine A rear joint; and the single machine C is fixed above the clamp base by utilizing a single machine C front joint and a single machine C rear joint.
Furthermore, X, Y, Z three directions are set on the single machine A, the positive direction of the X axis is the front joint direction, and the reverse direction of the X axis is the rear joint direction; the single machine A is subjected to X, Y, Z vibration in three directions during actual operation; the single machine B and the single machine C only bear X, Y-direction vibration during actual work; two units a are mounted back to back and the second unit a is rotated 90 deg. sideways in relation to the first unit a, i.e. unit a has one more test direction. The test principle of the invention is as follows: the whole clamp seat is installed on the vibration table, the vibration table can realize vibration in two directions on a horizontal plane, the single machine is installed on the clamp seat, and then the clamp seat is installed on the vibration table. Firstly, the vibration table vibrates in two directions of a horizontal plane, then the clamp seat rotates 90 degrees, and then the clamp seat is fixed on the vibration table for testing once, so that the vibration test conditions of three single machines in the required directions can be realized.
Further, the clamp base adopts a hollow structure; the clamp base is connected with the vibration test bed, and the clamp base is connected with the vibration test bed through bolts.
Further, the single machine A, the single machine B and the single machine C are connected with the corresponding front and rear connectors through bolts; the front joint and the rear joint are connected with the clamp base through screws.
Furthermore, the front and rear connectors of the clamp base in four directions are provided with antennae.
The beneficial effects of the invention and the prior art are as follows:
the invention improves the convenient, rapid and efficient performance of the multi-single-machine multi-direction vibration test, the connection mode among all the parts ensures that the single machine and the vibration table are connected more firmly, and the vibration test data is more accurate;
the invention can simultaneously realize the vibration test in the X, Y, Z direction by a plurality of single machines, thereby reducing the disassembly times of the single machines and ensuring the service life of the single machines;
the clamp of the invention is of modular design, facilitating replacement of damaged joint components.
Drawings
FIG. 1 is a general view of a vibration test capability enhancing fixture according to the present invention;
FIG. 2 is a front side of an installation view of a vibration test capability-enhancing clamp according to the present invention;
FIG. 3 is a rear side of an installation view of a vibration test capability-enhancing fixture according to the present invention;
FIG. 4 is an internal cross-sectional view of a vibration testing capability-enhancing fixture of the present invention;
FIG. 5 is a schematic diagram of a single machine A of the vibration test capability enhancing fixture of the present invention;
FIG. 6 is a schematic view of a single machine B of the vibration test capability enhancing fixture of the present invention;
FIG. 7 is a schematic view of a single machine C of the vibration test capability enhancing fixture of the present invention;
FIG. 8 is a first-order vibration mode result of the fixture in the vibration mode simulation test for the model according to the embodiment of the present invention;
FIG. 9 is a second order mode shape result of the fixture in the vibration mode simulation test for the model according to the embodiment of the present invention;
FIG. 10 is a result of the third mode of vibration of the fixture in the vibration mode simulation test for the model according to the embodiment of the present invention;
the device comprises a clamp base 1, a stand-alone machine A front connector 2, a stand-alone machine A rear connector 3, a stand-alone machine B front connector 4, a stand-alone machine A rear connector 5, a stand-alone machine C front connector 6 and a stand-alone machine C rear connector 7.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention more clear, the present invention is further described in detail by the following examples. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 4, three types of single machines, i.e., two single machines a, one single machine B and one single machine C, are respectively installed in four directions above a clamp base 1, and the two single machines a arranged back to back are set as a first single machine a and a second single machine a. Wherein A is arranged at the opposite side of the clamp seat, and one single machine A is laterally rotated by 90 degrees relative to the other single machine A, so that X, Y directions can be simultaneously completed in one vibration experiment. X, Y passes were made in one experiment for clamp B, C. When the clamp table base rotates in one direction, the vibration test of the X, Y, Z direction of the single machine A and the X, Y direction of the single machine B, C can be simultaneously completed.
As shown in FIGS. 5 to 7, for the front and rear position schematic diagrams of the A, B, C single machine, the front connector 2 and the rear connector 3 of the single machine A are connected with the clamp base 1 through screws. The front connector 4 and the rear connector 5 of the single machine B are connected with the clamp base 1 through screws. The single machine C front joint 6 and the single machine C rear joint 7 are connected with the clamp base 1 through screws. The internal connection holes are shown in fig. 4. Wherein the installation direction of the single machine a front connector 2 and the single machine a rear connector 3 in fig. 3 is laterally rotated by 90 °. Each connects through strengthening rib improvement intensity, connects through bolted connection between each unit and the front and back. The clamp base 1 is connected with the vibration test bed through bolts, the clamp base 1 is designed in a hollow mode, weight of each part is reduced through lightening holes, and therefore strength is guaranteed while the clamp base is convenient to move.
Specifically, for the vibration mode simulation of the model, the fixture in the embodiment of the present invention is mainly composed of a base, and can realize four-side suspension connection, as shown in fig. 1, to respectively realize x, y and z-direction vibration test experiments, and the total mass is 14.45 Kg. Wherein the mounting joint is made of steel and the base is made of aluminum. The clamp mode calculation results are shown in fig. 8-10, the first-order natural frequency is 650.27Hz, the second-order natural frequency is 661.19, and the third-order natural frequency is 709.44, and the vibration test in the X, Y, Z direction by a plurality of single machines is realized simultaneously.
The test principle of the invention is as follows: the whole clamp seat is installed on the vibration table, the vibration table can realize vibration in two directions on a horizontal plane, the single machine is installed on the clamp seat, and then the clamp seat is installed on the vibration table. Firstly, the vibration table vibrates in two directions of a horizontal plane, then the clamp seat rotates 90 degrees, and then the clamp seat is fixed on the vibration table for testing once, so that the vibration test conditions of three single machines in the required directions can be realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. A clamp for improving the vibration test capability comprises a clamp base (1) and is characterized in that two single machines A, one single machine B and one single machine C are respectively arranged above the clamp base (1) in four directions; in four directions, the two single machines A are arranged back to back; one single machine B and one single machine C are arranged back to back; two single machines A arranged back to back are set as a first single machine A and a second single machine A;
the first single machine A is fixed above the clamp base (1) through a single machine A front connector (2) and a single machine A rear connector (3), and a second single machine A arranged back to back rotates 90 degrees laterally relative to the first single machine A, namely the mounting directions of the front connector (2) and the rear connector (3) of the second single machine A are fixed to rotate 90 degrees laterally;
the single machine B is fixed above the clamp base (1) by a single machine B front joint (4) and a single machine A rear joint (5); and the single machine C is fixed above the clamp base (1) by utilizing a single machine C front connector (6) and a single machine C rear connector (7).
2. The vibration test capability improving jig as claimed in claim 1, wherein three directions are set X, Y, Z on a single machine A, the forward direction of the X-axis is the front joint direction, and the reverse direction of the X-axis is the rear joint direction; the single machine A is subjected to X, Y, Z vibration in three directions during actual operation; the single machine B and the single machine C only bear X, Y-direction vibration during actual work; two units a are mounted back to back and the second unit a is rotated 90 deg. sideways in relation to the first unit a, i.e. unit a has one more test direction.
3. The clamp for improving the vibration test capability according to claim 1, wherein the clamp base (1) is of a hollow structure; the clamp base (1) is connected with the vibration test bed, and the clamp base (1) is connected with the vibration test bed through a bolt.
4. The clamp for improving the vibration test capability according to claim 1, wherein the stand-alone units A, B and C are connected with the corresponding front and rear connectors through bolts; the front joint and the rear joint are connected with the clamp base (1) through screws.
5. The clamp for improving the vibration test capability according to claim 1, wherein the four-direction front and rear joints of the clamp base (1) are provided with antennae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011307755.8A CN112611529B (en) | 2020-11-20 | 2020-11-20 | Vibration test ability promotes anchor clamps |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011307755.8A CN112611529B (en) | 2020-11-20 | 2020-11-20 | Vibration test ability promotes anchor clamps |
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| Publication Number | Publication Date |
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| CN112611529A true CN112611529A (en) | 2021-04-06 |
| CN112611529B CN112611529B (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011307755.8A Active CN112611529B (en) | 2020-11-20 | 2020-11-20 | Vibration test ability promotes anchor clamps |
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| CN (1) | CN112611529B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114963896A (en) * | 2022-04-29 | 2022-08-30 | 南京航空航天大学 | Vibration clamp with two-in-one-drag-spring |
| CN115031913A (en) * | 2022-05-06 | 2022-09-09 | 南京航空航天大学 | Large-scale vibration fixture for long-distance flexible stretching mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114963896A (en) * | 2022-04-29 | 2022-08-30 | 南京航空航天大学 | Vibration clamp with two-in-one-drag-spring |
| CN115031913A (en) * | 2022-05-06 | 2022-09-09 | 南京航空航天大学 | Large-scale vibration fixture for long-distance flexible stretching mechanism |
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| Publication number | Publication date |
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| CN112611529B (en) | 2021-12-21 |
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