CN102426131B - Curved beam-arch integrated experimental device used in electronic universal testing machine - Google Patents
Curved beam-arch integrated experimental device used in electronic universal testing machine Download PDFInfo
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- CN102426131B CN102426131B CN201110440626.0A CN201110440626A CN102426131B CN 102426131 B CN102426131 B CN 102426131B CN 201110440626 A CN201110440626 A CN 201110440626A CN 102426131 B CN102426131 B CN 102426131B
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- 238000012360 testing method Methods 0.000 title abstract description 10
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- 238000002474 experimental method Methods 0.000 abstract description 9
- 230000006870 function Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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Abstract
The invention relates to a curved beam-arch integrated experimental device used in an electronic universal testing machine, and belongs to the technical field of experimental equipment in building engineering. The curved beam-arch integrated experimental device comprises a curved bar, a sliding block and a base, wherein, the curved bar is an arc member with a rectangular section, and a connecting plate and an ear plate are respectively arranged at two ends of the curved bar; hinged bearings, screw holes and adjusting screws are arranged on the sliding block and the base; the two ends of the curved bar are connected with the sliding block and the base through the connecting plates, the ear plates, the hinged bearings, the screw holes and the screws; and the base is placed on the electronic universal testing machine. In the curved beam-arch integrated experimental device, the electronic universal testing machine is taken as a support and force application unit, the curved bar with the rectangular section and a circular arc axis is taken as a main body, the adjusting screws are arranged on the sliding block and the base, and the constraint mode of the two ends of the curved bar is changed by the adjusting screws so as to realize a plurality of experimental modes such as the simply supported curved beam, the hingeless arch, the two-hinged arch and the like. Therefore, the curved beam-arch integrated experimental device has the advantages of simple structure, diversified functions and the like, and is convenient in adjustment; in addition, different experiment contents can be set according to the professional characteristics and levels of students so as to deepen understanding on knowledge points of the curved beam and the arch.
Description
Art
The present invention relates to a kind of curved beam for electronic universal tester and arch comprehensive experimental device, belong to construction work technical field of experiment equipment.
Background technology
Along with the development of mechanical & electrical technology, electronic universal tester is with its high precision, multi-functional and abundant Testing Software progressively becomes the main flow equipment of most of universities and colleges material mechanics experiment, but most electronic universal tester is only used for carrying out the stretching of material, compression and deflection of beam experimental teaching, the function of equipment is not fully utilized, the content of experimental teaching is also only confined to basic replication experiment aspect, expanded, particularly the integration capability that be conducive to training student that combine actual in engineering and the experimental teaching unit solving engineering problem ability compare shortage.
Summary of the invention
The object of this invention is to provide a kind of curved beam for electronic universal tester and arch comprehensive experimental device, the circular arc curved bar being rectangle based on a cross section, coordinate the slide block and the base that are provided with dumpling bearing and screw, by selecting curved bar and the fastening means between slide block and base, change the way of restraint at curved bar two ends, realize the kinds of experiments forms such as freely-supported curved beam, fixed arch, two-hinged arch.
Technical scheme of the present invention is: for curved beam and the arch comprehensive experimental device of electronic universal tester, comprise curved bar 1, slide block 2 and base 3, the arc component of curved bar 1 to be cross section be rectangle, curved bar 1 two ends are provided with web joint and otic placode, slide block 2 and base 3 are provided with dumpling bearing, screw and set screw, curved bar 1 two ends are connected by web joint, otic placode, dumpling bearing, screw and screw with between slide block 2 and base 3, base 3 is placed on electronic universal tester 12, using electronic universal tester as supporting and forcing unit.
Described curved bar 1 two ends are respectively welded with a web joint 4 and otic placode 13, and each web joint is provided with two for regulating the screw I 14 of the way of restraint, and otic placode 13 is provided with pin hole 15.
The left side of described bearing 3 is provided with one piece of slide block 2, and the left end of slide block 2 is provided with a baffle plate I 5, middle part is provided with a fixing dumpling bearing I 17, dumpling bearing I 17 both sides are provided with two group leader's circular holes 16 and two screws II 18.
The left end of described base 3 is provided with a baffle plate II 6, and right-hand member is provided with a fixing dumpling bearing II 19, and the left side is provided with two groups of bolts 9 corresponding with slotted hole 16 on fixing slide block.
Described base 3 left end baffle plate 6 is reserved with the thrust screw that two can load thrust screw 7, and right-hand member is fixed dumpling bearing 19 both sides and is reserved with two screws III 20.
Described curved bar 1 two ends otic placode 13 respectively and slide block 2 is fixed dumpling bearing I 17 and base 3 fix between dumpling bearing II 19 and be hinged by pin 10.
Described curved bar 1 two ends web joint 4 can respectively by screw III 20 on screw II 18 on screw 8 and slide block 2 and base 3, with slide block 2 and base 3 affixed.
During use, on support plate base 3 being positioned over electronic universal tester 12, put lubricating material in the bottom surface of slide block 2, be then put on base 3, the bolt of four on base 39 to be inserted in four slotted holes on slide block 16.Curved bar 1 is installed, two, the left and right otic placode 13 of curved bar 1 is put into the hinged-support 17 on left side slide block 2 and the fixed-hinged support 19 on the right of base, and insert straight pin 10 respectively.Whether adding bolt between two pieces of web joints 4 again by selecting whether add thrust screw 7 between on the left side two baffle plates 5 and 6, between slide block 2 and base 3 whether on fastening and curved bar 1 and base 3, namely can obtain the experimental provision of following three kinds of forms: the static determinacy curved beam (Fig. 1) that (1) curved bar left end is moveable hinge bearing, right-hand member is fixed-hinged support; (2) curved bar left end is fixed-hinged support, right-hand member is also the two-hinged arch (Fig. 2) of fixed-hinged support (once indeterminate); (3) curved bar left end and right-hand member are the fixed arch (Fig. 3) of hold-down support (three-fold statically indeterminate).
The present invention utilizes supporting 12 and the loading environment 11 of electronic universal tester, by changing the way of restraint of bearing, realize freely-supported curved beam, fixed arch, two-hinged arch etc. from static determinacy to hyperstatic kinds of experiments integrated mode, meet institution of higher learning's different majors, the mechanics of materials of different levels student or the needs of structural mechanics experimental teaching.This device incorporation engineering is actual, apparatus structure is small and exquisite, clear principle, simple to operate, diverse in function, can according to the specialty characteristics of student and level in experimental teaching, set different experiment contents, deepen in the mechanics of materials and structural mechanics about the understanding of the knowledge point of curved beam and arch, be the economical and practical device that the industry science institution of higher learning having possessed electronic universal tester carry out opening experiment, innovative experiment and engineering simulation experiment.
Accompanying drawing explanation
Schematic front view under Fig. 1 static determinacy of the present invention (curved beam) mode;
Fig. 2 is the present invention's once schematic front view under indeterminate (two-hinged arch) mode;
Fig. 3 is schematic front view under three-fold statically indeterminate of the present invention (fixed arch) mode;
Fig. 4 is curved bar schematic front view of the present invention;
Fig. 5 is curved bar schematic top plan view of the present invention;
Fig. 6 is slide block schematic front view of the present invention;
Fig. 7 is slide block schematic top plan view of the present invention;
Fig. 8 is base schematic front view of the present invention;
Fig. 9 is base schematic top plan view of the present invention.
In figure: 1-curved bar, 2-slide block, 3-base, 4-web joint, baffle plate II, the 7-thrust screw of baffle plate I, the 6-base left end of 5-slide block left end, 8-trip bolt, 9-bolt, 10-straight pin, 11-electronic universal tester loads, 12-electronic universal tester support plate, 13-otic placode, the screw I on 14-web joint, 15-pin hole, 16-slotted hole, 17-hinged-support I, screw III on screw II, 19-dumpling bearing II, 20-base on 18-slide block.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but protection scope of the present invention is not limited to described content.
As shown in figs 1-9, this is used for curved beam and the arch comprehensive experimental device of electronic universal tester, comprise curved bar 1, slide block 2 and base 3, the arc component of curved bar 1 to be cross section be rectangle, curved bar 1 two ends are provided with web joint and otic placode, slide block 2 and base 3 are provided with dumpling bearing, screw and set screw, curved bar 1 two ends are connected by web joint, otic placode, dumpling bearing, screw and screw with between slide block 2 and base 3, base 3 is placed on electronic universal tester support plate 12, using electronic universal tester as supporting and forcing unit.Device curved bar 1 two ends are respectively welded with a web joint 4 and otic placode 13, and each web joint is provided with two for regulating the screw I 14 of the way of restraint, and otic placode 13 is provided with pin hole 15.The left side of bearing 3 is provided with one piece of slide block 2, and the left end of slide block 2 is provided with a baffle plate I 5, middle part is provided with a fixing dumpling bearing I 17, dumpling bearing I 17 both sides are provided with two group leader's circular holes 16 and two screws II 18.The left end of base 3 is provided with a baffle plate II 6, and right-hand member is provided with a fixing dumpling bearing II 19, and the left side is provided with two groups of bolts 9 corresponding with slotted hole 16 on fixing slide block.Base 3 left end baffle plate II 6 is reserved with the thrust screw that two can load thrust screw 7, and right-hand member is fixed dumpling bearing 19 both sides and is reserved with two screws III 20.Curved bar 1 two ends otic placode 13 respectively and slide block 2 is fixed dumpling bearing I 17 and base 3 are fixed between dumpling bearing II 19 hinged by pin 10.Curved bar 1 two ends web joint 4 can respectively by screw III 20 on screw II 18 on screw 8 and slide block 2 and base 3, with slide block 2 and base 3 affixed.
When carrying out stress test and the analysis design mothod of static determinacy curved beam: as shown in Figure 1, base 3 is positioned on the support plate (12) of electronic universal tester, put lubricating material in the bottom surface of slide block 2, be then put on base 3, make produce good relative sliding between the two.Curved bar 1 is installed, two, the left and right otic placode of curved bar is put into the hinged-support on the slide block of the left side and the fixed-hinged support on the right of base respectively, and insert straight pin (10) respectively, form the statically determinate structure curved beam that the left side is sliding hinge bearing, the right is fixed-hinged support.First carry out theoretical calculation analysis, curved beam is selected several moment of flexure and the larger cross section adhering resistance strainometer of axle power, by pressure head 11 imposed load on electronic universal tester, just can carry out stress test and the analysis design mothod of static determinacy curved beam.
When carrying out stress test and the analysis design mothod of two-hinged arch: as shown in Figure 2, base 3 is positioned on the support plate 12 of electronic universal tester, curved bar 1 is installed, two, the left and right otic placode of curved bar is put into the hinged-support on the slide block of the left side and the fixed-hinged support on the right of base respectively, and inserts straight pin (10) respectively.Slide block 2 is put on base 3, and four dormant bolts 9 on base put into four slotted holes 16 on slide block, are tightened by nut.Thrust screw 7 is screwed into, till this screw is just contacted with the baffle plate I 5 on slide block 2 from the baffle plate II 6 base.Material is thus formed the two-hinged arch (hyperstatic structure) that the right and left is fixed-hinged support.First carry out theoretical calculation analysis, two-hinged arch is selected several moment of flexure and the larger cross section adhering resistance strainometer of axle power, by pressure head 11 imposed load on electronic universal tester, just can carry out stress test and the analysis design mothod of two-hinged arch.
When carrying out stress test and the analysis design mothod of fixed arch: as shown in Figure 3, base 3 is positioned on the support plate 12 of electronic universal tester, curved bar 1 is installed, two, the left and right otic placode of curved bar is put into the hinged-support on the slide block of the left side and the fixed-hinged support on the right of base plate respectively, and inserts straight pin 10 respectively.Slide block 2 is put on base 3, and four dormant bolts 9 on base put into four slotted holes 16 on slide block, are tightened by nut.Thrust screw 9 is screwed into, till this screw is just contacted with the baffle plate I 5 on slide block 2 from the baffle plate II 6 base.Then be screwed into trip bolt 8 by the screw 4 on web joint, be screwed in the screw 18 on slide plate and the screw 20 on base respectively, to tightening, material is thus formed the fixed arch (three-fold statically indeterminate structure) that the right and left is hold-down support.First carry out theoretical calculation analysis, fixed arch is selected several moment of flexure and the larger cross section adhering resistance strainometer of axle power, by pressure head 11 imposed load on electronic universal tester, just can carry out stress test and the analysis design mothod of fixed arch.
Claims (3)
1., for curved beam and the arch comprehensive experimental device of electronic universal tester, comprise curved bar (1), slide block (2), base (3), web joint, otic placode, dumpling bearing; Slide block (2) and base (3) are provided with dumpling bearing, screw and set screw, curved bar (1) two ends are connected by web joint, otic placode, dumpling bearing, screw and screw with between slide block (2) and base (3), and base (3) is placed on electronic universal tester; It is characterized in that: the arc component of curved bar (1) to be cross section be rectangle; Curved bar (1) two ends are respectively welded with a web joint (4) and otic placode (13), and each web joint is provided with two for regulating the screw I (14) of the way of restraint, and otic placode (13) is provided with pin hole (15); The left end of base (3) is provided with baffle plate II (6), and right-hand member is provided with fixing dumpling bearing II (19), and the left side is provided with two groups of bolts (9) corresponding with slotted hole (16) on fixing slide block; Base (3) left end baffle plate II (6) is reserved with the thrust screw that two can load thrust screw (7), right-hand member is fixed dumpling bearing II (19) both sides and is reserved with two screws III (20); The left side of base (3) is provided with one piece of slide block (2), and the left end of slide block (2) is provided with baffle plate I (5), middle part is provided with a fixing dumpling bearing I (17), dumpling bearing I (17) both sides are provided with two group leader's circular holes (16) and two screws II (18).
2. the curved beam for electronic universal tester according to claim 1 and arch comprehensive experimental device, is characterized in that: curved bar (1) two ends otic placode (13) respectively and slide block (2) above fixes dumpling bearing I (17) and base (3) is above hinged by pin (10) between fixing dumpling bearing II (19).
3. the curved beam for electronic universal tester according to claim 1 and arch comprehensive experimental device, it is characterized in that: screw III (20) can be gone up respectively by the upper screw II (18) of screw (8) and slide block (2) and base (3) in curved bar (1) two ends web joint (4), with slide block (2) and base (3) affixed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110440626.0A CN102426131B (en) | 2011-12-26 | 2011-12-26 | Curved beam-arch integrated experimental device used in electronic universal testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110440626.0A CN102426131B (en) | 2011-12-26 | 2011-12-26 | Curved beam-arch integrated experimental device used in electronic universal testing machine |
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| CN102426131A CN102426131A (en) | 2012-04-25 |
| CN102426131B true CN102426131B (en) | 2015-04-22 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102750868B (en) * | 2012-05-30 | 2014-01-29 | 浙江科技学院 | Experiment model of portal frame |
| CN104677940B (en) * | 2015-01-30 | 2017-10-17 | 中国矿业大学 | A kind of reinforced concrete shell Fire-resistance test system |
| CN109406127B (en) * | 2018-11-30 | 2023-10-27 | 广州大学 | Experimental device for increase test piece load with support |
| CN112924276A (en) * | 2021-01-26 | 2021-06-08 | 浙江工业大学 | Unstable load device for detecting honeycomb arch and application method thereof |
| CN112924280A (en) * | 2021-01-26 | 2021-06-08 | 浙江工业大学 | Detection device and detection method for bearing capacity of honeycomb steel arch in plane |
| CN116428248A (en) * | 2023-04-13 | 2023-07-14 | 华中科技大学 | Adjustable fixing device for arch feet of plate arch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844887A (en) * | 2006-04-30 | 2006-10-11 | 欧进萍 | Three-point bending beam type apparatus for big size material damping test |
| CN101520375A (en) * | 2009-03-26 | 2009-09-02 | 河海大学 | Experimental device for comparing internal force properties of static and hyperstatic structures |
| CN101697258A (en) * | 2009-11-02 | 2010-04-21 | 浙江大学 | Multi-span beam multifunction stress deformation demonstration instrument |
| CN201909739U (en) * | 2010-12-29 | 2011-07-27 | 长沙理工大学 | Arch structure test device |
| CN202403965U (en) * | 2011-12-26 | 2012-08-29 | 昆明理工大学 | Curved beam and arch comprehensive experimental device for electronic universal testing machine |
-
2011
- 2011-12-26 CN CN201110440626.0A patent/CN102426131B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844887A (en) * | 2006-04-30 | 2006-10-11 | 欧进萍 | Three-point bending beam type apparatus for big size material damping test |
| CN101520375A (en) * | 2009-03-26 | 2009-09-02 | 河海大学 | Experimental device for comparing internal force properties of static and hyperstatic structures |
| CN101697258A (en) * | 2009-11-02 | 2010-04-21 | 浙江大学 | Multi-span beam multifunction stress deformation demonstration instrument |
| CN201909739U (en) * | 2010-12-29 | 2011-07-27 | 长沙理工大学 | Arch structure test device |
| CN202403965U (en) * | 2011-12-26 | 2012-08-29 | 昆明理工大学 | Curved beam and arch comprehensive experimental device for electronic universal testing machine |
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Effective date of registration: 20170704 Address after: 650093 Ring Road in Yunnan city of Kunming province No. 50 Kunming University of Science and Technology Xinying Campus Patentee after: INDUSTRY MANAGEMENT LTD KUNMING University OF SCIENCE AND TECHNOLOGY Address before: 650093 Kunming, Yunnan, Wuhua District Road, No. 253 Patentee before: Kunming University of Science and Technology |
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Granted publication date: 20150422 Termination date: 20211226 |
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