CN101576434A - Device for simulating pre-tensioning of compression-type fender - Google Patents
Device for simulating pre-tensioning of compression-type fender Download PDFInfo
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- CN101576434A CN101576434A CNA2009100865477A CN200910086547A CN101576434A CN 101576434 A CN101576434 A CN 101576434A CN A2009100865477 A CNA2009100865477 A CN A2009100865477A CN 200910086547 A CN200910086547 A CN 200910086547A CN 101576434 A CN101576434 A CN 101576434A
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- guide rail
- pulley
- elastic deformation
- guideway
- tensioning
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Abstract
The invention discloses a device for simulating pre-tensioning of a compression-type fender, consisting of an elastic deformation part, a position-limit guideway part and a pre-tensioning part; the position-limit guideway part comprises a guideway, a guideway sliding block and a pulley that is fixedly arranged at one end of the guideway; the elastic deformation part is fixedly connected with the guideway sliding block of the position-limit guideway part; the pre-tensioning part consists of a pulley, a heavy block, a pulley bracket and a filiform article that is capable of bearing the weight of the heavy block; the pulley bracket supports the pulley; one end of the filiform article is connected with the heavy block and hangs the heavy block in the air; the other end of the filiform article rounds the pulley and is then connected with the guideway sliding block or the elastic deformation part. The device can simulate three sections of rigidity characteristics with large property differences, and can adjust the corresponding free deformation section distance and the minimum reaction force value in the rigid stage according to the characteristic value needed by the target rigidity curve; therefore, the device utilize one model to simulate a plurality of entities with different rigidity characteristic values and can be widely used for simulating various devices that have similar rigidity characteristic with the compression-type fender.
Description
Utility model patent has been applied in this invention simultaneously
Technical field
The present invention relates to a kind of device for simulating pre-tensioning of compression-type fender.
Background technology
No matter current marine petroleum development is to adopt FPSO, fixed or portable platform, utilizes shuttler to transport a kind of method that the oil right and wrong are usually seen back and forth between harbour and marine produce oil facility.
When shuttler alongside platform, in order to prevent the damaged in collision platform or the oil tanker of oil tanker and platform, generally all can be provided with by cradle by ship one side at platform, at two ends a plurality of rubber fenders are set all simultaneously by the cradle side, to absorb the bump kinetic energy of oil tanker, reduce impact.
Wherein, the stiffness curve of compression-type fender exists tangible characteristics, forms by three sections: 1. linearity range, 2. Free Transform section, 3. restrained deformation section.Owing to its special stiffness curve, in the middle of the ocean engineering model test, simulate the relation of this counter-force and distortion, need specialized designs to go out the corresponding analogue means of a cover, also there is not such device at present.
Through retrieval, do not find identical with theme of the present invention or similar bibliographical information as yet to prior art document and patent documentation.
Summary of the invention
The objective of the invention is to remedy the vacancy of prior art, a kind of device for simulating pre-tensioning of compression-type fender of simulating the above-mentioned special stiffness characteristics of tool is provided.
Device for simulating pre-tensioning of compression-type fender provided by the present invention, it is made up of elastic deformation part, limit guide rail part and three parts of pre-tensioning portion; Described limit guide rail partly comprises guide rail 5, the guide rail sliding shoe 7 that can slide on guide rail and the pulley 9 that is positioned at guide rail 5 one ends; Described elastic deformation part is fixedlyed connected with the guide rail sliding shoe 7 of limit guide rail part, and described pre-tensioning portion is made up of pulley 10, pouring weight 11, pulley bracket 12 and the filiform 13 that can bear pouring weight 11 weight; Described pulley bracket 12 is propped pulley 10, and an end of described filiform 13 is connected with pouring weight 11, and makes pouring weight 11 unsettled, and the other end is walked around pulley 10 and partly is connected with guide rail sliding shoe 7 or described elastic deformation with pulley 9.Described limit guide rail part also comprises pulley support piece 8, and described pulley support piece 8 is fixed on pulley 9 at an end of guide rail 5.
The elasticity crushed element is connected in guide rail sliding shoe 7 in this structure, the filiform 13 of pre-tensioning portion is walked around pulley 9 and is connected to said connection support component in front or guide rail sliding shoe 7, thereby the pretightning force that provides by pouring weight weight partly is provided for elastic deformation, to reach pre-tensioned purpose.
Described elastic deformation part is by at least one pressing spring 1, the connection cushion block 2 that is individually fixed in the two ends of each pressing spring 1, model contact block 3 and be connected support component 4 and form; Pressing spring 1 one ends are fixedly coupled cushion block 2 and to be connected support component 4 fixedly connected, the other end of pressing spring 1 is fixedly coupled cushion block 2 and is connected with described model contact block 3, and described elastic deformation is partly fixedlyed connected with guide rail sliding shoe 7 by described connection support component 4.Described model contact block 3 can be provided with each pressing spring as required one or the common block models contact block 3 that connects of a plurality of pressing spring are set, and its size, shape and material supply section are according to the setting of experiment needs.
Based on said structure, device of the present invention when elastic deformation partly is subjected to impacting, utilizes the variation at the stressing conditions bottom offset of spring and pouring weight, effectively the true mechanical characteristic of analog compression type fender; Utilize spring and pouring weight various combination, can simulate non-linear spring curve with differently curved direction.
Described limit guide rail part also comprises the guide rail limited block 6 of restriction guide rail sliding shoe 7 at the sliding area of guide rail 5.Guide rail limited block 6 can be fixed on the diverse location of guide rail 5 by nut or alternate manner, and at this moment, guide rail sliding shoe 7 can freely slide in the guide rail area that guide rail limited block and pulley 9 are limited.
Above-mentioned filiform 13 is preferably tinsel, as steel wire etc.
Before the work,, the position of pressing spring 1 quantity, rigidity, guide rail limited block 6 and the quality of counterweight pouring weight 11 have been determined according to the eigenwert of the compression-type fender stiffness curve of required simulation.Concrete mode is: according to the slope of stiffness curve Free Transform section, determine the spring and the respective numbers of proper stiffness; According to the horizontal range of stiffness curve Free Transform section, also be the distance of Free Transform, determine the position of guide rail limited block 6 on guide rail 5, and be fixed on the guide rail with nut; According to the minimum counter-force value of stiffness curve restrained deformation section, determine the quality of counterweight pouring weight, and connect with steel wire and to hang on the large pulley.
During work, ship model one side of a ship is by last model contact block, and when counter-force that contact force is provided less than counterweight pouring weight quality, pressing spring will be in the elastic compression stage, and this stage will be simulated the linearity range in the stiffness curve; When contact force equaled counter-force that counterweight pouring weight quality provided, it is maximum that the distortion of pressing spring reaches, and do not recompress, and guide rail sliding shoe 7 can slide to the direction of guide rail confinement block 6 along guide rail simultaneously, and this stage will be simulated the Free Transform section in the stiffness curve; When counter-force that contact force is provided greater than counterweight pouring weight quality, the guide rail sliding shoe must slide to guide rail limited block position, at this moment, is equivalent to rigidity between ship model and the present invention and contacts, contact force will sharply increase, and this stage will be simulated the restrained deformation section in the stiffness curve.
The material of said apparatus elastic deformation department pattern contact block, quantity and contact area should be selected according to prototype and test scaling factor; The position palpus rigidity that pulley 9 must be fixed on the guide rail is enough big, can not produce excessive deformation, rigidity such as above-mentioned pulley support piece must be enough big, to guarantee in the process of whole work, being unlikely to fracture or generation excessive deformation, this is for obtaining test figure accurately, and the effect of better bringing into play apparatus of the present invention is extremely important.
Device for simulating pre-tensioning of compression-type fender of the present invention utilizes the pressing spring imitating shell sexual stage of suitable elasticity, the suitable counterweight simulation Free Transform stage, and adjustable stop means simulation restrained deformation section, can be in ocean engineering experiment analog compression type fender well.Device of the present invention can be when simulation oceanographic engineering basin test compression-type fender, reflected test findings truly, obtain good result.
The present invention has tangible novelty.At first, the stiffness characteristics that similar device can analog compression type fender is not arranged as yet, and through verification experimental verification, the present invention can simulate well and provide three sections stiffness characteristics that nature difference is big before the present invention; Secondly, the present invention can be according to the needed eigenwert of target stiffness curve, and the minimum counter-force value of at random regulating corresponding Free Transform segment distance and entering the rigidity stage is worth discrepant material object so a model can be simulated a plurality of rigidity characteristic.So the present invention can be widely used for simulating the various devices that have with the similar stiffness characteristics of compression-type fender.Moreover the present invention has solved the nonlinear authenticity problem of model test effectively, and similar work is from now on had higher reference value.
Description of drawings
Fig. 1 is a device for simulating pre-tensioning of compression-type fender general illustration of the present invention;
Fig. 2 is the elastic deformation part synoptic diagram of device for simulating pre-tensioning of compression-type fender of the present invention;
Fig. 3 is the limit guide rail part synoptic diagram of device for simulating pre-tensioning of compression-type fender of the present invention;
Fig. 4 is the pre-tensioning portion synoptic diagram of device for simulating pre-tensioning of compression-type fender of the present invention;
Fig. 5 is the stiffness curve of device for simulating pre-tensioning of compression-type fender simulation of the present invention and the contrast synoptic diagram of the actual stiffness curve of rubber fender.
Embodiment
Method described in the following embodiment if no special instructions, is conventional method.
As Fig. 1-Fig. 4, be device for simulating pre-tensioning of compression-type fender of the present invention, it is made up of elastic deformation part (Fig. 2), limit guide rail part (Fig. 3) and three parts of pre-tensioning portion (Fig. 4);
Wherein, elastic deformation part is by at least one pressing spring 1, the connection cushion block 2 that is individually fixed in the two ends of each pressing spring 1, model contact block 3 be connected support component 4 and form; Pressing spring 1 one ends are fixedly coupled cushion block 2 and to be connected support component 4 fixedly connected, and the other end of pressing spring 1 is fixedly coupled cushion block 2 and is connected with model contact block 3.Described model contact block 3 can be provided with each pressing spring as required one or the common block models contact block 3 that connects of a plurality of pressing spring are set, and its size, shape and material supply section are according to the setting of experiment needs.
Limit guide rail part by guide rail 5, can the guide rail sliding shoe 7 that slides on the guide rail, restriction guide rail sliding shoe 7 at the guide rail limited block 6 of the sliding area of guide rail 5, be fixed in the pulley support piece 8 of guide rail 5 one ends and the small sheave 9 that is fixed on the pulley support piece 8 is formed; Guide rail limited block 6 can be fixed on the diverse location of guide rail 5 by nut or alternate manner, and at this moment, guide rail sliding shoe 7 can freely slide in the guide rail area that guide rail limited block and pulley 9 are limited.During use, guide rail 5 can make guide rail sliding shoe 7 slide in the horizontal direction.
Pre-tensioning portion is made up of pulley 10, pouring weight 11, pulley bracket 12 and the steel wire 13 that can bear pouring weight 11 weight; Pulley bracket 12 is propped pulley 10, and an end of filiform 13 is connected with pouring weight 11, and makes pouring weight 11 unsettled.
The connection support component 4 of above-mentioned elastic deformation part is fixedlyed connected with guide rail sliding shoe 7 bottoms of limit guide rail part, and the elastic deformation part can be free to slide on guide rail; The other end of above-mentioned steel wire 13 (a not end that is connected with pouring weight 11) is walked around pulley 10 and is connected with the support component 4 that is connected of elastic deformation part with pulley 9, is reached for the pretightning force that elastic deformation partly applies to be provided by pouring weight weight, reaches pre-tensioned purpose.
Based on said structure, device of the present invention when elastic deformation partly is subjected to impacting, utilizes the variation at the stressing conditions bottom offset of spring and pouring weight, effectively the true mechanical characteristic of analog compression type fender; Utilize spring and pouring weight various combination, can simulate non-linear spring curve with differently curved direction.
Before the work,, the position of pressing spring 1 quantity, rigidity, guide rail limited block 6 and the quality of counterweight pouring weight 11 have been determined according to the eigenwert of the compression-type fender stiffness curve of required simulation.Concrete mode is: according to the slope of stiffness curve Free Transform section, determine the spring and the respective numbers of proper stiffness; According to the horizontal range of stiffness curve Free Transform section, also be the distance of Free Transform, determine the position of guide rail limited block 6 on guide rail 5, and be fixed on the guide rail with nut; According to the minimum counter-force value of stiffness curve restrained deformation section, determine the quality of counterweight pouring weight, and connect with steel wire and to hang on the large pulley.
During work, ship model one side of a ship is by last model contact block, and when counter-force that contact force is provided less than counterweight pouring weight quality, pressing spring will be in the elastic compression stage, and this stage will be simulated the linearity range in the stiffness curve; When contact force equaled counter-force that counterweight pouring weight quality provided, it is maximum that the distortion of pressing spring reaches, and do not recompress, and guide rail sliding shoe 7 can slide to the direction of guide rail confinement block 6 along guide rail simultaneously, and this stage will be simulated the Free Transform section in the stiffness curve; When counter-force that contact force is provided greater than counterweight pouring weight quality, the guide rail sliding shoe must slide to guide rail limited block position, at this moment, is equivalent to rigidity between ship model and the present invention and contacts, contact force will sharply increase, and this stage will be simulated the restrained deformation section in the stiffness curve.
The material of said apparatus elastic deformation department pattern contact block, quantity and contact area should be selected according to prototype and test scaling factor; The rigidity of above-mentioned pulley support piece must be enough big, and by welding or bolt, to guarantee being unlikely to fracture or generation excessive deformation in the process of whole work, test figure is extremely important accurately for obtaining for this.
Device for simulating pre-tensioning of compression-type fender of the present invention utilizes the pressing spring imitating shell sexual stage of suitable elasticity, the suitable counterweight simulation Free Transform stage, and adjustable stop means simulation restrained deformation section, can be in ocean engineering experiment analog compression type fender well.Device of the present invention can be when simulation oceanographic engineering basin test compression-type fender, reflected test findings truly, obtain good result.
Based on said structure design, the present invention has novelty, at first, the stiffness characteristics that similar device can analog compression type fender is not arranged as yet, and through verification experimental verification, the present invention can simulate well and provide three sections stiffness characteristics that nature difference is big before the present invention; Secondly, the present invention can be according to the needed eigenwert of target stiffness curve, and the minimum counter-force value of at random regulating corresponding Free Transform segment distance and entering the rigidity stage is worth discrepant material object so a model can be simulated a plurality of rigidity characteristic.So the present invention can be widely used for simulating the various devices that have with the similar stiffness characteristics of compression-type fender.Moreover the present invention has solved the nonlinear authenticity problem of model test effectively, and similar work is from now on had higher reference value.
Said apparatus is by verification experimental verification, test simulation the direct alongside oil storage platform of shuttler.Wherein said apparatus is used for the rubber fender of physical simulation oil storage platform.Concrete test parameters is as follows:
5000 tons of dead weight capacity of shuttler tonnage;
Oil storage platform rubber fender type DA-A800H * 2.5 meters;
Oil storage platform rubber fender quantity two ends, each 4 at every end;
Fender analogue means quantity two covers, 4 above-mentioned oil storage platform rubber fenders of every cover simulation;
0.5 to 3.0 meter of wave environment condition significant wave height;
The every cover simulation of pressing spring usage quantity device uses 4 pressing springs, totally 8.
The stressed relation with distortion of pressing spring is selected according to the mechanical characteristic of corresponding rubber fender, and the quantity of every cover simulation device pressing spring is to the quantity in requisition for the rubber fender of simulation, and the weight of pouring weight stressed during according to rubber fender Free Transform section determined.
The result as shown in Figure 5, by test simulation and checking, the mechanical characteristic of analogue means is very approaching with true rubber fender, can prove that this device can successfully be simulated the true mechanical characteristic of rubber fender.
Claims (5)
1, a kind of device for simulating pre-tensioning of compression-type fender is characterized in that: it is made up of elastic deformation part, limit guide rail part and three parts of pre-tensioning portion; Described limit guide rail partly comprises guide rail (5), the guide rail sliding shoe (7) that can slide on guide rail and the pulley (9) that is fixed in guide rail (5) one ends; Described elastic deformation part is fixedlyed connected with the guide rail sliding shoe (7) of limit guide rail part, and described pre-tensioning portion is made up of pulley (10), pouring weight (11), pulley bracket (12) and the filiform (13) that can bear pouring weight (11) weight; Described pulley bracket (12) is propped pulley (10), and an end of described filiform (13) is connected with pouring weight (11), and makes pouring weight (11) unsettled, and the other end is walked around pulley (10) and partly is connected with guide rail sliding shoe (7) or described elastic deformation with pulley (9) back.
2, device according to claim 1 is characterized in that: described elastic deformation part is by at least one pressing spring (1), the connection cushion block (2) that is individually fixed in the two ends of each pressing spring (1), model contact block (3) and be connected support component (4) and form; Pressing spring (1) one end is fixedly coupled cushion block (2) and to be connected support component (4) fixedly connected, the other end of pressing spring (1) is fixedly coupled cushion block (2) and is connected with described model contact block (3), and described elastic deformation is partly fixedlyed connected with guide rail sliding shoe (7) by described connection support component (4).
3, device according to claim 1, it is characterized in that: described limit guide rail part also comprises the guide rail limited block (6) of the sliding area of restriction guide rail sliding shoe (7) on guide rail (5), and described guide rail limited block (6) can be pegged graft or is fixed in the diverse location of guide rail (5) with screw tightening.
4, device according to claim 1 is characterized in that: described limit guide rail part also comprises pulley support piece (8), and described pulley support piece (8) is fixed on pulley (9) at an end of guide rail (5).
5, according to any described device among the claim 1-4, it is characterized in that: described filiform (13) is a tinsel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100865477A CN101576434B (en) | 2009-06-05 | 2009-06-05 | Device for simulating pre-tensioning of compression-type fender |
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| CN2009100865477A CN101576434B (en) | 2009-06-05 | 2009-06-05 | Device for simulating pre-tensioning of compression-type fender |
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| CN101576434A true CN101576434A (en) | 2009-11-11 |
| CN101576434B CN101576434B (en) | 2011-02-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316797A (en) * | 2014-10-24 | 2015-01-28 | 英业达科技有限公司 | Test fixture |
| CN104849077A (en) * | 2015-04-02 | 2015-08-19 | 苏州中州安勃起重有限公司 | Windproof sliding simulation system for crane under circumstance of deviation of center of gravity |
| CN106872282A (en) * | 2016-11-15 | 2017-06-20 | 中交天津港湾工程研究院有限公司 | Guide-roller type elastic rope analogue means and application process |
| CN107132134A (en) * | 2017-06-14 | 2017-09-05 | 中国人民解放军91053部队二队 | Model test is with small-sized fender analogue means |
| CN109506888A (en) * | 2019-01-03 | 2019-03-22 | 上海交通大学 | Surging fender simulator for the test of floating support mounting water pool model |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2436414Y (en) * | 2000-07-04 | 2001-06-27 | 沈阳普利司通有限公司 | Arch shape compressed rubber ship-board protector |
| CN2869845Y (en) * | 2006-02-20 | 2007-02-14 | 天津大学 | Rubber fender-bar mechanics parameter testing device |
| CN201421393Y (en) * | 2009-06-05 | 2010-03-10 | 中国海洋石油总公司 | Pretension simulation device for compression type fender |
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2009
- 2009-06-05 CN CN2009100865477A patent/CN101576434B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316797A (en) * | 2014-10-24 | 2015-01-28 | 英业达科技有限公司 | Test fixture |
| CN104849077A (en) * | 2015-04-02 | 2015-08-19 | 苏州中州安勃起重有限公司 | Windproof sliding simulation system for crane under circumstance of deviation of center of gravity |
| CN106872282A (en) * | 2016-11-15 | 2017-06-20 | 中交天津港湾工程研究院有限公司 | Guide-roller type elastic rope analogue means and application process |
| CN106872282B (en) * | 2016-11-15 | 2023-12-22 | 中交天津港湾工程研究院有限公司 | Guide wheel type elastic rope simulation device, setting method and application method thereof |
| CN107132134A (en) * | 2017-06-14 | 2017-09-05 | 中国人民解放军91053部队二队 | Model test is with small-sized fender analogue means |
| CN107132134B (en) * | 2017-06-14 | 2023-12-05 | 中国人民解放军91053部队 | Small-sized fender simulation device for model test |
| CN109506888A (en) * | 2019-01-03 | 2019-03-22 | 上海交通大学 | Surging fender simulator for the test of floating support mounting water pool model |
| CN109506888B (en) * | 2019-01-03 | 2024-04-26 | 上海交通大学 | A heave fender analogue means for floating support installation pond model test |
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| CN101576434B (en) | 2011-02-09 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Patentee after: Shanghai Jiao Tong University Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center Patentee before: Shanghai Jiao Tong University |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Shanghai Jiao Tong University Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Shanghai Jiao Tong University |
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