CN107894329B - Flexible connection test device of ultra-large floating body based on torsion-resistant mechanism and manufacturing method - Google Patents
Flexible connection test device of ultra-large floating body based on torsion-resistant mechanism and manufacturing method Download PDFInfo
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- CN107894329B CN107894329B CN201711041181.2A CN201711041181A CN107894329B CN 107894329 B CN107894329 B CN 107894329B CN 201711041181 A CN201711041181 A CN 201711041181A CN 107894329 B CN107894329 B CN 107894329B
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 230000007246 mechanism Effects 0.000 title claims description 43
- 238000013016 damping Methods 0.000 claims abstract description 36
- 238000004088 simulation Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a flexible connection test device of an ultra-large floating body based on torsion springs and a manufacturing method thereof, wherein the flexible connection test device comprises two bases, the torsion springs, a damping device, a connecting nut and an adjusting washer, and the two bases are arranged on the upper side and the lower side in parallel; a plurality of symmetrical through holes are formed in each base, a plurality of torsion springs and a plurality of damping devices are vertically arranged between the two bases through the through holes, and adjusting washers are placed in the through holes. The end parts of the torsion springs and the bases, and the end parts of the damping devices and the bases are respectively fixed on the two bases through connecting nuts, and one torsion spring and one damping device are in a group and are provided with a plurality of groups. The invention has simple structure and easy maintenance, and can flexibly adjust the types and the number of the torsion springs and the damping devices according to the actual requirement so as to achieve the aim of freely adjusting the rigidity and the damping and more flexibly and effectively limit the relative motion between two independent floating structure modules.
Description
Technical Field
The invention relates to a device in the technical field of ocean engineering, in particular to a flexible connection test device of an ultra-large floating body based on a torsion resistant mechanism and a manufacturing method thereof.
Background
Due to the fact that the ultra-large floating body is large in size and different in purpose, the structure of the ultra-large floating body is necessarily modularized from the viewpoint of maintenance and use. In a complex marine environment, the ultra-large floating body bears huge wind load and wave load, and the elastic deformation of the connector is extremely large, so that the performance of the connector between modules is very important, and the connection performance of the connector has great influence on the safety and stability of the ultra-large floating body.
In order to accurately obtain the overall motion response performance of the ultra-large floating body connected by a plurality of modules through connectors, a large amount of numerical calculation is carried out, and besides, a model test means is generally required for verification. The connection devices used at present between the very large floating body modules are basically manufactured by determining various parameters through a large number of numerical simulations before testing. However, in the actual use process, it is difficult to adjust the parameters (stiffness and damping) of these connection devices according to the requirements of model test, and thus it is difficult to achieve the ideal test effect.
Disclosure of Invention
The invention aims to provide a flexible connection testing device of an ultra-large floating body based on a torsion resistant mechanism and a manufacturing method thereof aiming at the defects in the prior art so as to solve the problems in the prior art.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
the flexible connection test device of the ultra-large floating body based on the anti-torsion mechanism comprises bases, the anti-torsion mechanism, connecting nuts and adjusting washers, wherein the bases are rectangular flat plates, the number of the bases is two, and the two bases are arranged on the upper side and the lower side in parallel. The anti-torsion mechanism is vertically arranged between the two bases through a through hole, a plurality of groups of anti-torsion mechanisms are arranged, and an adjusting washer is placed in the through hole. Two ends of the anti-torsion mechanism are fixed on the two bases through connecting nuts, and each set of anti-torsion mechanism comprises an anti-torsion spring and a damping device.
Further, fenestrate inner wall is unthreaded, and two perforation be a set of, is equipped with a plurality of groups altogether, has the booth to separate between two perforation in a set of, has big interval between every group perforation, and the perforation symmetry setting of every group of two upper and lower bases.
Furthermore, the torsion springs and the end parts of the two ends of the damping device are respectively provided with a thread, and the torsion springs in each group are arranged on the same side of the damping device.
Furthermore, the damping device adopts a hydraulic damper, a pneumatic damper or a bidirectional cylinder piston damper.
The manufacturing method of the flexible connection test device of the ultra-large floating body based on the anti-torsion mechanism is characterized in that a plurality of flexible connection test devices of the ultra-large floating body based on the anti-torsion mechanism are connected between two independent devices for testing the ultra-large floating body. The torsion spring is used for resisting bending moment and torque, and the damping device is used for buffering tensile and compressive stress, and hindering and limiting relative motion between two independent floating structure modules.
Before a simulation test is carried out, the type and the number of the torsion springs and the type and the number of the damping devices are confirmed by measuring the tensile, compression, bending and torsion rigidity of the flexible connection test device of the ultra-large floating body based on the torsion mechanism, so that the requirements of the simulation test on the rigidity and the damping of the connector are met. The torsion resisting mechanism comprises six groups of torsion resisting springs and six damping devices, the number of the bases is two, the number of the through holes is twelve, and the total number of the through holes is twenty-four; the torsion-resistant mechanism is respectively inserted into six groups of the two bases through a plurality of through holes.
Compared with the prior art, the invention has the following beneficial effects:
the invention has simple structure and easy maintenance, can flexibly adjust the type and the number of the torsion springs and the type and the number of the damping devices according to the actual requirement, can freely adjust the rigidity and the damping parameters, and better meets the requirement of a model test, thereby being capable of more flexibly and effectively limiting the relative motion between two independent floating structure modules.
This advantage can be used to handle situations where the stiffness varies from one very large buoyant body module to another, which is more likely to occur in real sea conditions. In addition, the method plays an important auxiliary role in the research of the ultra-large floating body connector, can verify the numerical calculation result through a flexible model test, and provides guidance for the practical application of engineering.
Drawings
Fig. 1 is a front view of a flexible connection test device of a super-large floating body based on a torsion resistant mechanism according to the invention.
Fig. 2 is a left side view of the flexible connection test device of the ultra-large floating body based on the torsion resistant mechanism.
Fig. 3 is a right side view of the flexible connection test device of the ultra-large floating body based on the torsion resistant mechanism according to the invention.
Fig. 4 is a top view of the flexible connection testing device of the ultra-large floating body based on the torsion resistant mechanism.
Fig. 5 is a simulation test effect diagram of the flexible connection test device of the ultra-large floating body based on the torsion resistant mechanism.
Fig. 6 is a working principle diagram of the flexible connection test device of the ultra-large floating body based on the torsion resistant mechanism.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 6, the flexible connection test device of the ultra-large floating body based on the anti-torsion mechanism comprises bases 1, the anti-torsion mechanism, connecting nuts 4 and adjusting washers 5, wherein the bases 1 are rectangular flat plates, the number of the bases is two, and the two bases 1 are arranged on the upper side and the lower side in parallel. The anti-torsion mechanism is vertically arranged between the two bases 1 through a through hole 6, a plurality of groups of anti-torsion mechanisms are arranged, and an adjusting washer is placed in the through hole. Two ends of the torsion-resistant mechanisms are fixed on the two bases 1 through connecting nuts 4, and each torsion-resistant mechanism comprises a torsion-resistant spring 2 and a damping device 3.
The inner wall of the through hole 6 is not provided with threads, so that the torsion spring 2 and the damping device 3 can freely penetrate through the through hole, the two through holes 6 are in a group and are provided with a plurality of groups, a small interval is arranged between the two through holes 6 in the group, a large interval is arranged between each group of through holes 6, and each group of through holes 6 of the upper base 1 and the lower base 1 are symmetrically arranged.
The end parts of the two ends of the torsion springs 2 and the damping device 3 are respectively engraved with threads, and the torsion springs 2 in each group are arranged on the same side of the damping device 3.
The damping device 3 adopts a hydraulic damper, a pneumatic damper or a bidirectional cylinder piston damper, and can flexibly provide various damping sizes.
The manufacturing method of the flexible connection test device of the ultra-large floating body based on the anti-torsion mechanism is characterized in that a plurality of flexible connection test devices of the ultra-large floating body based on the anti-torsion mechanism are connected between two independent devices for testing the ultra-large floating body. The torsion spring 2 is used for resisting bending moment and torque, and the damping device 3 is used for buffering tensile and compressive stress, and hindering and limiting relative movement between two independent floating structure modules.
When the ultra-large floating body moves in waves, each module is subjected to different wave forces, and then the modules tend to relatively approach or move away. The connecting device limits the relative movement of the modules through the left base, the right base, the torsion spring 2 in the middle and the damping device 3. When the module tends to approach or rapidly move away from the module, the damping device 3 absorbs impact energy, rapidly reduces the relative movement speed of the module, and avoids collision accidents or module separation accidents. When there is a tendency for the modules to roll relative to each other, the torsion spring 2 is deformed, generating a large torque to resist the deformation. Therefore, during the working process of the connector, work is continuously done through the deformation of the torsion spring 2, the energy is absorbed by the damper, and the impact load is buffered, so that the relative movement trend between the adjacent modules of the ultra-large floating body is reduced.
Before a simulation test is carried out, the type and the number of the torsion springs 2 and the type and the number of the damping devices 3 are determined by measuring the rigidity of the torsion springs, the tension springs, the compression springs, the bending springs and the torsion springs, so that the requirements of the simulation test are met, and the devices are made of materials with good oxidation resistance and corrosion resistance to adapt to adverse consequences caused by environmental factors such as soaking in water. According to the requirements of the simulation test, six torsion springs 2 and six damping devices 3 are respectively arranged, two bases 1 are arranged, twelve groups of through holes 6 are arranged, and twenty-four holes are formed; the torsion-resistant mechanism is inserted six between the two bases 1 through a plurality of perforations 6.
In the invention, the requirement of the ultimate bearing capacity of the connection test device can be selected according to the characteristics of the super large floating body, the scale ratio of the model test and the actual working and survival sea conditions, and can be generally determined by numerical calculation. For example, for a single-module ultra-large floating body with a drainage of 10 ten thousand tons, the wave height under the condition of living sea is 5 meters, the axial load of the connector can be 5 ten thousand tons at most through numerical calculation, the scale ratio of the model is 1/100, the equivalent model scale connection test device needs to be capable of bearing 50 kilograms of axial force, and the requirement needs to be considered when the device is actually designed and manufactured.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. Flexible connection test device of ultra-large body based on anti-torque mechanism, its characterized in that: the device comprises bases, an anti-torsion mechanism, a connecting nut and an adjusting washer, wherein the bases are rectangular flat plates, the number of the bases is two, the two bases are arranged on the upper side and the lower side in parallel, and the bases are provided with a plurality of through holes; the anti-torsion mechanism is vertically arranged between the two bases through a through hole, a plurality of groups of anti-torsion mechanisms are arranged, and an adjusting washer is placed in the through hole; two ends of each anti-torsion mechanism are fixed on the two bases through connecting nuts, and each set of anti-torsion mechanism comprises an anti-torsion spring and a damping device;
the inner wall of the through hole is not threaded, the two through holes are in a group and are provided with a plurality of groups, a small space is arranged between the two through holes in the group, a large space is arranged between the through holes in each group, and the through holes in each group of the upper base and the lower base are symmetrically arranged.
2. The flexible connection test device of the ultra-large floating body based on the torsion resistant mechanism according to claim 1, wherein: the torsion springs and the end parts of the two ends of the damping device are respectively provided with a thread, and the torsion springs in each group are arranged on the same side of the damping device.
3. The flexible connection test device of the ultra-large floating body based on the torsion resistant mechanism according to claim 1, wherein: the damping device adopts a hydraulic damper, a pneumatic damper or a bidirectional cylinder piston damper.
4. A method for manufacturing a flexible connection test device using the torsion resistant mechanism-based ultra-large floating body according to claim 1, wherein: connecting a plurality of flexible connection test devices of the ultra-large floating body based on the torsion resistant mechanism between two independent ultra-large floating body test devices; the torsion spring is used for resisting bending moment and torque, and the damping device is used for buffering tension and compression stress, and hindering and limiting relative motion between two independent floating structure modules;
before a simulation test is carried out, the type and the number of selected torsion springs and the type and the number of damping devices are confirmed by measuring the tensile, compression, bending and torsion rigidity of the flexible connection test device of the ultra-large floating body based on the torsion resistant mechanism, so that the requirements of the simulation test on the rigidity and the damping of the connector are met; the torsion resisting mechanism comprises six groups of torsion resisting springs and six damping devices, the number of the bases is two, the number of the through holes is twelve, and the total number of the through holes is twenty-four; the torsion-resistant mechanism is respectively inserted into six groups of the two bases through a plurality of through holes.
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| CN201711041181.2A CN107894329B (en) | 2017-10-30 | 2017-10-30 | Flexible connection test device of ultra-large floating body based on torsion-resistant mechanism and manufacturing method |
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| CN201711041181.2A CN107894329B (en) | 2017-10-30 | 2017-10-30 | Flexible connection test device of ultra-large floating body based on torsion-resistant mechanism and manufacturing method |
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| CN107894329B true CN107894329B (en) | 2020-02-04 |
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| JPH10252040A (en) * | 1997-03-12 | 1998-09-22 | Bridgestone Corp | Mooring device for large floating object |
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| CN107097913A (en) * | 2017-05-16 | 2017-08-29 | 唐山航岛海洋重工有限公司 | The basic module of very large floating structures |
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2017
- 2017-10-30 CN CN201711041181.2A patent/CN107894329B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252040A (en) * | 1997-03-12 | 1998-09-22 | Bridgestone Corp | Mooring device for large floating object |
| CN2651138Y (en) * | 2003-06-30 | 2004-10-27 | 祁昕 | Navigation floating rack floater spring connector |
| CN102464090A (en) * | 2010-11-08 | 2012-05-23 | 蓬莱琴海舰船设备有限公司 | Flexible lifting ring |
| CN106275300A (en) * | 2016-08-12 | 2017-01-04 | 上海交通大学 | The attachment means of Very Large Floating Structure module based on rods |
| CN106335610A (en) * | 2016-08-12 | 2017-01-18 | 上海交通大学 | Connecting device for ultra-large type floating structure modules |
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Effective date of registration: 20231226 Address after: 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing Patentee after: Chongqing Research Institute of Shanghai Jiaotong University Address before: 200240 No. 800, Dongchuan Road, Shanghai, Minhang District Patentee before: SHANGHAI JIAO TONG University |