CN208847464U - Modal test spring suspension device - Google Patents
Modal test spring suspension device Download PDFInfo
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- CN208847464U CN208847464U CN201821677628.5U CN201821677628U CN208847464U CN 208847464 U CN208847464 U CN 208847464U CN 201821677628 U CN201821677628 U CN 201821677628U CN 208847464 U CN208847464 U CN 208847464U
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- elastic string
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Abstract
Modal test spring suspension device, including left column, right column, crossbeam, left screw, right screw and the identical left elastic string group of structure and right elastic string group, left column, right column and crossbeam connection composition portal frame, left screw one end is mounted on crossbeam, the left screw other end is connect with left elastic string group, right screw one end is mounted on crossbeam, and the right screw other end is connect with right elastic string group；In left elastic string group, elastic string is separately mounted in two drum groups, and in each drum group, hanging ring and the drum for installing elastic string are set on boundling bar；Minimal number of elastic string needed for being installed according to the weight of actual tests part, to make the rigid body frequency of test be preferably minimized to improve the test quality of mode as far as possible；Unwanted elastic string can be removed in actual use, to reduce the quality and rigidity of elastic system, the length of elastic string can be bound as needed, had the characteristics that structure is simple, be easily installed, be practical.
Description
Technical field
The utility model relates to modal test technique field more particularly to a kind of modal test spring suspension devices.
Background technique
It needs to simulate freedom-free state in the modal test of the testpieces such as aircraft, it is therefore desirable to carry out bullet to testpieces
Property support and the Elastic mode frequency of testpieces made to be greater than 3 times of testpieces rigid body mode frequency.Existing modal test is supported
System is mainly air spring, this is not suitable for the modal test of small-scale structure.Chinese patent ZL201320544452.7 is disclosed
A kind of suspended vehicle mould measurement testing stand, the elastic system of this testing stand is spring, it is contemplated that spring needs special
Design, therefore also bring along inconvenience；Chinese patent ZL201410620410.6 discloses a kind of assembling adjustable zero component free module
State test stand, it is inconvenient which installs larger heavier testpieces.
Utility model content
The technical issues of the utility model is solved is to provide a kind of modal test spring suspension device, above-mentioned to solve
Disadvantage in background technique.
The technical problem solved by the utility model is implemented by the following technical solutions:
Modal test spring suspension device, including left column, right column, crossbeam, left screw, right screw and structure are identical
Left elastic string group and right elastic string group, left column, right column and crossbeam connection composition portal frame, left screw one end is mounted on crossbeam
On, the left screw other end is connect with left elastic string group, and right screw one end is mounted on crossbeam, the right screw other end and right elastic string
Group connection；In left elastic string group, elastic string is separately mounted in two drum groups, in each drum group, is set on boundling bar
Hanging ring and drum for installing elastic string.
In the present invention, the left elastic string group of multiple groups and right elastic string group are provided on crossbeam.
In the present invention, left screw is mounted on crossbeam by left adjusting nut, and right screw passes through right adjusting nut
It is mounted on crossbeam.
In the present invention, left screw is connect by left connector with left elastic string group, and right screw passes through right connector
It is connect with right elastic string group.
In the present invention, more elastic strings, and itself overlap joint length of every elastic string are provided in left elastic string group
Degree is not less than 15cm, and installation place is tied up securely using thin wire.
In the present invention, multiple drums are provided in each drum group.
In the present invention, hanging ring is arranged in the middle part of boundling bar, and drum is fixed on boundling bar by nut.
In the present invention, before use, portal frame is installed first, then according to the position of the weight of testpieces, center of gravity
And sling point calculates the minimal number that each sling point needs elastic string, then by elastic string and line with a distance from center of gravity
Disk is installed to forming left elastic string group and right elastic string group on boundling bar, then left elastic string group and right elastic string group is mounted on cross
Liang Shang adjusts screw rod by the adjusting nut in rotation left screw and right screw finally according to height required for practical motivate
Height adjusts testpieces height with this.
The utility model has the advantages that the utility model can install required minimal number of elastic string according to the weight of actual tests part, with
The rigid body frequency of test is set to be preferably minimized to improve the test quality of mode as far as possible；It can be by unwanted rubber in actual use
Rope removes, and to reduce the quality and rigidity of elastic system, the length of elastic string can be bound as needed；With structure letter
List is easily installed, practical feature.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the preferred embodiment of the utility model.
Fig. 2 is the left elastic string group overall structure diagram in the preferred embodiment of the utility model.
Fig. 3 is the left elastic string group partition structural schematic diagram in the preferred embodiment of the utility model.
Fig. 4 is the drum group overall structure diagram in the preferred embodiment of the utility model.
Fig. 5 is the drum group partition structural schematic diagram in the preferred embodiment of the utility model.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Referring to the modal test spring suspension device of FIG. 1 to FIG. 5, including left column 1, right column 2, crossbeam 3, fixing bolt
4, left screw 5, right screw 6, left adjusting nut 7, right adjusting nut 8, left connector 9, right connector 10, left elastic string group 11 and
Right elastic string group 12, left elastic string group include drum group 13 and elastic string 14, and drum group includes hanging ring 15, boundling bar 16, drum
17 and nut 18, wherein left column 1, right column 2, which connects with crossbeam 3 by bolt 4, forms portal frame, and 5 one end of left screw passes through
Left adjusting nut 7 is mounted on crossbeam 3, and 5 other end of left screw is connect with left 9 one end of connector, left 9 other end of connector and a left side
Elastic string group 11 connects, and 6 one end of right screw is mounted on crossbeam 3 by right adjusting nut 8,6 other end of right screw and right connection
The connection of 10 one end of device, right 10 other end of connector are connect with right elastic string group 12；
Left elastic string group 11 is identical as right 12 structure of elastic string group, and in left elastic string group 11, more elastic strings 14 are pacified respectively
In two drum groups 13, and the lap of splice of itself of every elastic string 14 is not less than 15cm, and installation place uses thin wire
It ties up securely；
In drum group 13, hanging ring 15 is set on boundling bar 16 and multiple for installing the drum 17 of elastic string 14, and hang
Drum 17 is fixed on boundling bar 16 at 16 middle part of boundling bar by nut 18 by the setting of ring 15.
In the present embodiment, two hanging rings 15 being arranged in left elastic string group 11, one is used to connect with left connector 9,
Another with testpieces for connecting.
In the present embodiment, before use, first install portal frame, then according to the weight of testpieces, center of gravity position and
Sling point calculates the minimal number that each sling point needs elastic string 14 with a distance from center of gravity, then by 14 He of elastic string
The installation of drum 13 is to forming left elastic string group 11 and right elastic string group 12 on boundling bar 16, then by left elastic string group 11 and right rubber
Rope group 12 is mounted on crossbeam 3, finally according to height required for practical motivate, by rotation left screw 5 and right screw 6
Adjusting nut adjusts screw rod height and adjusts testpieces height with this.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (6)
1. modal test spring suspension device, which is characterized in that including left column, right column, crossbeam, left screw, right screw and
The identical left elastic string group of structure and right elastic string group, left column, right column and crossbeam connection composition portal frame, left screw one end
It is mounted on crossbeam, the left screw other end is connect with left elastic string group, and right screw one end is mounted on crossbeam, the right screw other end
It is connect with right elastic string group；In left elastic string group, elastic string is separately mounted in two drum groups, in each drum group, boundling
Hanging ring and the drum for installing elastic string are set on bar.
2. modal test spring suspension device according to claim 1, which is characterized in that left screw passes through left adjusting nut
It is mounted on crossbeam, right screw is mounted on crossbeam by right adjusting nut.
3. modal test spring suspension device according to claim 1, which is characterized in that left screw by left connector with
Left elastic string group connection, right screw are connect by right connector with right elastic string group.
4. modal test spring suspension device according to claim 1, which is characterized in that be provided in left elastic string group more
Root elastic string, and itself lap of splice of every elastic string is not less than 15cm.
5. modal test spring suspension device according to claim 1, which is characterized in that be provided in each drum group more
A drum.
6. modal test spring suspension device according to claim 1, which is characterized in that hanging ring is arranged in boundling bar
Portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821677628.5U CN208847464U (en) | 2018-10-17 | 2018-10-17 | Modal test spring suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821677628.5U CN208847464U (en) | 2018-10-17 | 2018-10-17 | Modal test spring suspension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208847464U true CN208847464U (en) | 2019-05-10 |
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ID=66375617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821677628.5U Active CN208847464U (en) | 2018-10-17 | 2018-10-17 | Modal test spring suspension device |
Country Status (1)
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| CN (1) | CN208847464U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165552A (en) * | 2021-12-17 | 2022-03-11 | 江西洪都航空工业集团有限责任公司 | Air spring |
| CN114166446A (en) * | 2021-12-17 | 2022-03-11 | 江西洪都航空工业集团有限责任公司 | Flexible support system |
| WO2023016114A1 (en) * | 2021-08-10 | 2023-02-16 | 中国航天空气动力技术研究院 | Modal test support apparatus and method for using same |
-
2018
- 2018-10-17 CN CN201821677628.5U patent/CN208847464U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023016114A1 (en) * | 2021-08-10 | 2023-02-16 | 中国航天空气动力技术研究院 | Modal test support apparatus and method for using same |
| CN114165552A (en) * | 2021-12-17 | 2022-03-11 | 江西洪都航空工业集团有限责任公司 | Air spring |
| CN114166446A (en) * | 2021-12-17 | 2022-03-11 | 江西洪都航空工业集团有限责任公司 | Flexible support system |
| CN114166446B (en) * | 2021-12-17 | 2024-04-02 | 江西洪都航空工业集团有限责任公司 | Flexible supporting system |
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