CN117629570B - Directional movable vibration exciter mounting base for ship dynamics test - Google Patents
Directional movable vibration exciter mounting base for ship dynamics test Download PDFInfo
- Publication number
- CN117629570B CN117629570B CN202311564574.7A CN202311564574A CN117629570B CN 117629570 B CN117629570 B CN 117629570B CN 202311564574 A CN202311564574 A CN 202311564574A CN 117629570 B CN117629570 B CN 117629570B
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- screw sliding
- sliding groove
- screw
- supporting unit
- vertical supporting
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- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 description 10
- 239000013585 weight reducing agent Substances 0.000 description 8
- 230000005284 excitation Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000026058 directional locomotion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
-
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a directionally movable vibration exciter mounting base for ship dynamics testing, and belongs to the technical field of ships. According to the invention, the purpose of accurately moving the vibration exciter to different positions to work can be achieved by accurately designing the relative position relation of the slide ways in the slide grooves. The base and the vibration exciter are connected through the vibration isolator, so that the influence of the vibration exciter on the inherent vibration characteristics of the ship or the submarine body to be tested is eliminated, the base is designed to be light, the influence of the base serving as additional mass on the dynamics characteristics of the experimental model is ensured, and the vibration isolator can be used for various multi-working-condition dynamics test tests of the ship or the submarine model.
Description
Technical Field
The invention belongs to the technical field of ships, and particularly relates to a directionally movable vibration exciter mounting base for a dynamics test.
Background
In the dynamic test process of the ship or submarine model, the vibration exciter is required to be accurately moved to different positions to apply excitation force, so that tedious and laborious repeated disassembly and installation work is required, and the test efficiency is greatly reduced. Meanwhile, the test equipment to be moved is often heavy, the working environment is often narrow, and the conditions of high cold, high temperature, high humidity, high pressure and the like can exist, so that the equipment disassembly and installation operation by personnel are very unfavorable.
Disclosure of Invention
The invention provides a slideway type mounting base capable of being used for precise directional movement of a vibration exciter, which can easily finish precise directional displacement of equipment without completely disassembling a fastener, ensures stable operation of the equipment at a required position and greatly improves test efficiency.
The invention provides a directionally movable vibration exciter mounting base for ship dynamics testing, which is characterized by comprising a first vertical supporting unit, a second vertical supporting unit, a horizontal panel and a plurality of vibration isolators, wherein the top of the first vertical supporting unit is connected with the top of the second vertical supporting unit through the horizontal panel, a first screw sliding groove group and a second screw sliding groove group which are flush with each other are respectively arranged on the plane of the connection part of the horizontal panel and the first vertical supporting unit and the second vertical supporting unit, the first screw sliding groove group and the second screw sliding groove group are composed of a plurality of screw sliding grooves, the bottom surfaces of the vibration isolators are connected in the sliding grooves of the screw sliding grooves through screws, the top surfaces of the vibration isolators are fixedly connected with the vibration exciter, and the bottom surfaces of the first vertical supporting unit and the second vertical supporting unit are used for contacting with a ship testing structure.
According to one embodiment of the invention, the left end and the right end of the bottom surface of the vibration isolator are respectively provided with a convex installation part, the installation parts are fixedly connected with one end of the screw through the elastic pad and the first flat pad, the other end of the screw is fixedly connected with the nut in the screw chute through the second flat pad, and the distance between the installation parts at the left end and the right end of the bottom surface of the vibration isolator is 1.1-1.5 times of the length of the screw chute.
According to one embodiment of the present invention, the screw sliding grooves are kidney-shaped or rectangular, the screw sliding grooves are the same in size, the number of screw sliding grooves in the first screw sliding groove set and the second screw sliding groove set is an even number greater than or equal to four, and the distance between each pair of screw sliding grooves in the first screw sliding groove set and the second screw sliding groove set is greater than the distance between adjacent screw sliding grooves in each pair of screw sliding grooves.
According to one embodiment of the invention, the first vertical supporting unit and the second vertical supporting unit comprise a pair of supporting plates, a web is connected between the pair of supporting plates, the web is parallel to the length direction of the screw chute, and the web is used for improving the supporting strength of the vibration isolator.
According to one embodiment of the invention, at least one hollowed structure is arranged between the first screw sliding groove set and the second screw sliding groove set, and the area of the hollowed structure accounts for 80-90% of the total area of the horizontal panel.
According to one embodiment of the invention, weight reducing grooves are formed in the inner surface of the hollowed-out structure, the upper surface and the lower surface of the web plate and the surface of one side, close to the web plate, of the supporting plate.
In general, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
(1) When the vibration points are changed, the screw used for fastening the vibration isolator is only required to be unscrewed, and the vibration isolator is pushed to the position required by the screw chute, so that the vibration isolator can be accurately moved in a directional manner to finish the change of the vibration points without repeated installation.
(2) The horizontal panel, the supporting plate and the web plate are all designed to be lightened, and the base is often welded on the boat body or the ship structure, so that the influence of the base serving as additional mass on the dynamics characteristics of the ship can be greatly reduced.
Drawings
FIG. 1 is a schematic structural view of a directionally movable exciter mounting base for use in a kinetic test.
FIG. 2 is a schematic illustration of an assembly between a directionally movable exciter mounting base and an exciter for a kinetic test.
The reference numerals are: the vibration isolator comprises a base 1, a vibration exciter 2, a vibration isolator 3, a first spring pad 4, a vibration exciter screw 5, a screw 6, a second spring pad 7, a first flat pad 8, a second flat pad 9, a nut 10, a first screw sliding groove 11, a second screw sliding groove 12, a third screw sliding groove 13, a fourth screw sliding groove 14, a first weight reduction groove 15, a second weight reduction groove 16 and a third weight reduction groove 17.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The invention firstly provides a vibration exciter mounting base capable of directionally moving for ship dynamics test, which is characterized in that the mounting base comprises a first vertical supporting unit, a second vertical supporting unit, a horizontal panel and a plurality of vibration isolators, wherein the top of the first vertical supporting unit is connected with the top of the second vertical supporting unit through the horizontal panel, a first screw sliding groove group and a second screw sliding groove group which are flush with each other are respectively arranged on the plane where the horizontal panel is connected with the first vertical supporting unit and the second vertical supporting unit, the first screw sliding groove group and the second screw sliding groove group are composed of a plurality of screw sliding grooves, the bottom surfaces of the vibration isolators are connected in the sliding way of the screw sliding grooves through screws, the top surfaces of the vibration isolators are fixedly connected with the vibration exciter, and the bottom surfaces of the first vertical supporting unit and the second vertical supporting unit are used for being in contact with a ship test structure.
In some embodiments, the top surface of the vibration isolator is connected with the vibration exciter through a screw, a spring pad and a flat pad, so that the vibration exciter cannot loosen in the dynamic test process, and experimental test precision is not affected.
In some embodiments, the left end and the right end of the bottom surface of the vibration isolator are respectively provided with a convex installation part, the installation parts are fixedly connected with one end of the screw through the elastic pad and the first flat pad, the other end of the screw is fixedly connected with the nut in the screw chute through the second flat pad, the distance between the installation parts at the left end and the right end of the bottom surface of the vibration isolator is 1.1-1.5 times of the length of the screw chute, namely, two installation screws of one vibration isolator are respectively matched with two chutes, the lengths of the chutes and the relative distance between two adjacent chutes can be set according to the relative position relation of the excitation points in the experimental working conditions, so that the accurate displacement of the vibration exciter to the required position can be easily oriented under the condition of not repeatedly disassembling the vibration exciter, and dynamic test experiments can be carried out.
In some embodiments, the screw sliding grooves are kidney-shaped or rectangular, the screw sliding grooves are the same in size, the number of screw sliding grooves in the first screw sliding groove set and the second screw sliding groove set is an even number greater than or equal to four, and the distance between each pair of screw sliding grooves in the first screw sliding groove set and the second screw sliding groove set is greater than the distance between adjacent screw sliding grooves in each pair of screw sliding grooves.
In some embodiments, the first vertical supporting unit and the second vertical supporting unit include a pair of supporting plates, a web is connected between the pair of supporting plates, the web is parallel to the length direction of the screw chute, and the web is used for improving the supporting strength of the vibration isolator.
In some embodiments, at least one hollowed structure is arranged between the first screw sliding groove set and the second screw sliding groove set, and the area of the hollowed structure accounts for 80-90% of the total area of the horizontal panel.
In some embodiments, the inner surface of the hollowed-out structure, the upper surface and the lower surface of the web plate, and the surface of the support plate, which is close to one side of the web plate, are provided with weight reduction grooves, and as the base and the ship structure to be tested are fixed together, the base will have an influence on the ship dynamics, and the weight reduction grooves will greatly reduce the mass of the base body, so that the influence of the base serving as additional mass on the ship dynamics is reduced.
The following are specific examples:
example 1
As shown in fig. 1 and 2, an excitation equipment mounting base for a ship dynamics test is shown, the mounting base 1 comprises a first vertical supporting unit, a second vertical supporting unit, a horizontal panel and a plurality of vibration isolators, the top of the first vertical supporting unit is connected with the top of the second vertical supporting unit through the horizontal panel, a first screw sliding groove set and a second screw sliding groove set which are flush are arranged on a plane where the horizontal panel is connected with the first vertical supporting unit and the second vertical supporting unit, the first screw sliding groove set and the second screw sliding groove set are composed of a first screw sliding groove 11, a second screw sliding groove 12, a third screw sliding groove 13 and a fourth screw sliding groove 15, the bottom surfaces of the first vertical supporting unit and the second vertical supporting unit are used for being in contact with the ship test structure, the base 1 is connected with the vibration isolators 2 through the plurality of vibration isolators 3, the mounting parts of the base 1 and the plurality of vibration isolators 3 are sequentially connected through screws 6, second elastic pads 7, first flat pads 8, second flat pads 9 and 10, nuts 3 and the plurality of vibration isolators 3, and the vibration isolators 2 can be further connected with the vibration isolators 2 through the first screw sliding groove 11, the second screw sliding groove 13 and the third screw sliding groove 15, and the fourth screw sliding groove 15, and the bottom surface of the first vertical supporting unit is used for being in contact with the ship test structure, and the vibration isolator 2 is greatly influenced by the vibration isolator, so that the vibration isolator has a large influence on the dynamics test performance is greatly influenced by the vibration exciter structure; the distance between the mounting parts at the left end and the right end of the bottom surface of the vibration isolator is 1.2 times of the length of the screw sliding grooves, and the distance between each pair of screw sliding grooves in the first screw sliding groove group and the second screw sliding groove group is larger than the distance between every two adjacent screw sliding grooves in each pair of screw sliding grooves, so that two different vibration isolators can conveniently displace in the screw sliding grooves; the first vertical supporting unit and the second vertical supporting unit comprise a pair of supporting plates, a web plate is connected between the pair of supporting plates, the web plate is parallel to the length direction of the first screw sliding groove set, and the web plate is used for improving the supporting strength of the vibration isolator 2; the first screw sliding groove group with have two equidimension and flush hollow structures between the second screw sliding groove group, every hollow structure's area accounts for 40% of horizontal panel total area, hollow structure's internal surface the upper and lower surface of web the backup pad has seted up first weight reduction groove 15, second weight reduction groove 16, third weight reduction groove 17 on the surface that is close to web one side, reduces the quality of base body greatly to reduce the influence of base as additional mass to the ship dynamics characteristic.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. The mounting base is characterized by comprising a first vertical supporting unit, a second vertical supporting unit, a horizontal panel and a plurality of vibration isolators, wherein the top of the first vertical supporting unit is connected with the top of the second vertical supporting unit through the horizontal panel, a first screw sliding groove group and a second screw sliding groove group which are flush with each other are respectively arranged on the plane of the connection part of the horizontal panel, the first vertical supporting unit and the second vertical supporting unit, the first screw sliding groove group and the second screw sliding groove group are formed by a plurality of screw sliding grooves, the bottom surfaces of the vibration isolators are connected in the sliding way of the screw sliding grooves through screws, the top surfaces of the vibration isolators are fixedly connected with the vibration isolators, and the bottom surfaces of the first vertical supporting unit and the second vertical supporting unit are used for contacting with a ship testing structure;
The left end and the right end of the bottom surface of the vibration isolator are respectively provided with a convex mounting part, the mounting parts are fixedly connected with one end of the screw through the elastic pad and the first flat pad, the other end of the screw is fixedly connected with a nut in the screw chute through the second flat pad, and the distance between the mounting parts at the left end and the right end of the bottom surface of the vibration isolator is 1.1-1.5 times of the length of the screw chute;
The screw sliding grooves are waist-shaped or rectangular, the sizes of the screw sliding grooves are the same, the number of the screw sliding grooves in the first screw sliding groove group and the second screw sliding groove group is an even number greater than or equal to four, and the distance between each pair of screw sliding grooves in the first screw sliding groove group and the second screw sliding groove group is greater than the distance between adjacent screw sliding grooves in each pair of screw sliding grooves;
The first vertical supporting unit and the second vertical supporting unit comprise a pair of supporting plates, a web plate is connected between the pair of supporting plates, and the web plate is parallel to the length direction of the screw sliding groove;
At least one hollow structure is arranged between the first screw sliding groove set and the second screw sliding groove set, and the area of the hollow structure accounts for 80-90% of the total area of the horizontal panel.
2. The directionally movable exciter mounting base for ship dynamics testing according to claim 1, wherein weight reducing grooves are formed in the inner surface of the hollowed-out structure, the upper surface and the lower surface of the web plate, and the surface of the support plate, which is close to one side of the web plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311564574.7A CN117629570B (en) | 2023-11-22 | 2023-11-22 | Directional movable vibration exciter mounting base for ship dynamics test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311564574.7A CN117629570B (en) | 2023-11-22 | 2023-11-22 | Directional movable vibration exciter mounting base for ship dynamics test |
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| Publication Number | Publication Date |
|---|---|
| CN117629570A CN117629570A (en) | 2024-03-01 |
| CN117629570B true CN117629570B (en) | 2024-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311564574.7A Active CN117629570B (en) | 2023-11-22 | 2023-11-22 | Directional movable vibration exciter mounting base for ship dynamics test |
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| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692331A (en) * | 2012-06-07 | 2012-09-26 | 哈尔滨工程大学 | Indirect testing method for equipment to excitation load of hull structure under vertical unbalance excitation force |
| CN111734782A (en) * | 2020-06-18 | 2020-10-02 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Vibration isolation device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5500608B2 (en) * | 2012-09-10 | 2014-05-21 | Ｉｍｖ株式会社 | Vibration test equipment |
| CN107521623B (en) * | 2017-10-10 | 2018-05-29 | 安徽理工大学 | Five degree of freedom becomes cell type multi-purpose vessel berthing device |
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2023
- 2023-11-22 CN CN202311564574.7A patent/CN117629570B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692331A (en) * | 2012-06-07 | 2012-09-26 | 哈尔滨工程大学 | Indirect testing method for equipment to excitation load of hull structure under vertical unbalance excitation force |
| CN111734782A (en) * | 2020-06-18 | 2020-10-02 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Vibration isolation device |
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| CN117629570A (en) | 2024-03-01 |
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