CN201262795Y - Truss structure and experimental apparatus for analyzing and designing bearing capacity - Google Patents
Truss structure and experimental apparatus for analyzing and designing bearing capacity Download PDFInfo
- Publication number
- CN201262795Y CN201262795Y CNU2008200300720U CN200820030072U CN201262795Y CN 201262795 Y CN201262795 Y CN 201262795Y CN U2008200300720 U CNU2008200300720 U CN U2008200300720U CN 200820030072 U CN200820030072 U CN 200820030072U CN 201262795 Y CN201262795 Y CN 201262795Y
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- truss
- framework
- bearing capacity
- frame structure
- force
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Abstract
A truss structure and load-bearing capacity analysis design experimental device comprises a framework and a truss which consists of a plurality of beams and arranged on the framework, long holes are processed on all the beams for constituting the truss, the beams are mutually fastened by bolts through the long holes, a resistance strain gauge is respectively arranged on each beam, and the resistance strain gauges are connected on a force and strain comprehensive parameter test instrument; a cross beam is arranged in the framework, a screw mechanism is arranged on the cross beam, a force sensor and a pressing head are arranged on the screw mechanism, and the force sensor is further connected with the force and strain comprehensive parameter test instrument; and the beam at the lower end of the truss is further connected with a force application beam through a pull rod.
Description
Technical field
The utility model belongs to teaching experimental equipment, is specifically related to a kind of truss-frame structure and load-bearing capacity and analyzes the designability experimental provision.
Background technology
In each science and engineering universities and colleges mechanics of materials electrical measuring method experiment, the electrical measuring method experiment of various beams is the most general experiments, test comprising the truss electrical measuring method, but because truss-frame structure more complicated, in the current experiments, the connection that truss is respectively formed between the beam is non-removable being rigidly connected, truss-frame structure is changeless with its size of forming beam, each size of forming beam can not change by regulating, can not change truss-frame structure by regulating the size of respectively forming beam, the span of truss, the replication experiment of truss-frame structure and load-bearing capacity can only be carried out, the experiment of truss-frame structure and load-bearing capacity analysis designability can not be realized.
Summary of the invention
The purpose of this utility model is to provide a kind of restraining factors that can eliminate the designability experiment, and the truss-frame structure and the load-bearing capacity that change the span of truss-frame structure, truss are analyzed the designability experimental provision.
The utility model provides a kind of device, and the connection that truss is respectively formed between the beam is dismountable being rigidly connected, and forms the size of beam by adjusting and each,
For achieving the above object, the technical solution adopted in the utility model is: comprise framework and be arranged on the truss of being made up of a plurality of beams on the framework, all be processed with elongated hole on each beam of said composition truss, between each beam by the elongated hole bolted, and all post resistance strain gage on each beam, resistance strain gage is connected on power and the strain comprehensive parameter tester; Be provided with crossbeam in framework, crossbeam is provided with screw mechanism, and force transducer, pressure head are installed on the screw mechanism, and force transducer also is connected with the strain comprehensive parameter tester with power; Also be connected with application of force beam on the beam of the lower end of truss by pull bar.
Handwheel also is installed on the screw mechanism of the present utility model; The upper end of framework is provided with the framework of band chute and puts the beams in place, and truss is installed in the chute of framework upper beam by bearing.
The utility model is by loosening fixing nut and the adjusting bolt position of respectively forming beam, change truss and respectively form the beam size, when each composition beam size reaches design load, tighten the fixing bolt of respectively forming beam again, thereby can realize the truss of multiple different structure and span, overcome in the current experiments, truss-frame structure is changeless with its size of forming beam, each connection of forming between the beam is non-removable being rigidly connected, and can only carry out the shortcoming of the replication experiment of truss-frame structure and load-bearing capacity; Also eliminate truss-frame structure and load-bearing capacity and analyze the restraining factors of designability experiment; The 2nd, adopt the spiral force application structure, application of force numerical value is read by power and strain comprehensive parameter tester through sensor; The 3rd, form the strain of beam generation and read by power and strain comprehensive parameter tester through resistance strain gage.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and principle of work are described in further detail.
Referring to Fig. 1, the utility model comprises framework 13 and is arranged on the framework upper beam 5 that framework 13 upper ends are provided with the band chute, truss 1 is installed in the chute of framework upper beam 5 by bearing 4, all be processed with elongated hole on each beam of composition truss 1, fastening with bolt 2 between each beam by elongated hole, and all post resistance strain gage 3 on each beam, resistance strain gage 3 is connected on power and the strain comprehensive parameter tester 6; Be provided with crossbeam 14 in framework 13, crossbeam 14 is provided with the screw mechanism 8 that has handwheel 7, and force transducer 9, pressure head 10 are installed on the screw mechanism 8, and force transducer 9 also is connected with strain comprehensive parameter tester 6 with power; Also be connected with application of force beam 12 on the beam of the lower end of truss 1 by pull bar 11.
Before the experiment, earlier by design size bolt 2 fastening truss 1, resistance strain gage 3 is attached to respectively forming on the beam of truss 1 respectively, bearing 4 is installed on the chute of framework upper beam 5, truss 1 is installed on the bearing 4, during experiment, rotates handwheel 7, force in truss 1 by screw mechanism 8, pressure head 10, application of force beam 12, pull bar 11, test the reading of exerting oneself by power and strain comprehensive parameter tester 6 through force transducer 9; Each is formed the stressed of beam and shows strain value by resistance strain gage 3 by power and strain comprehensive parameter tester 6.
When changing truss-frame structure and span, by becoming flexible fixing nut 2 and adjusting bolt 2 positions of respectively forming beam, change truss 1 and respectively form the beam size, when each composition beam size reaches design load, tightening the fixing bolt 2 of respectively forming beam again, is that truss 1 structure and span meet design requirement.
Claims (3)
1, a kind of truss-frame structure and load-bearing capacity are analyzed the designability experimental provision, comprise framework (13) and be arranged on the truss of forming by a plurality of beams (1) on the framework (13), it is characterized in that: all be processed with elongated hole on each beam of said composition truss (1), fastening with bolt (2) between each beam by elongated hole, and all post resistance strain gage (3) on each beam, resistance strain gage (3) is connected on power and the strain comprehensive parameter tester (6); Be provided with crossbeam (14) in framework (13), crossbeam (14) is provided with screw mechanism (8), and force transducer (9), pressure head (10) are installed on the screw mechanism (8), and force transducer (9) also is connected with strain comprehensive parameter tester (6) with power; Also be connected with application of force beam (12) on the beam of the lower end of truss (1), by loosening fixing screw and adjusting bolt position, can change the size that truss is respectively formed beam, thereby change truss-frame structure and span by pull bar (11).
2, truss-frame structure according to claim 1 and load-bearing capacity are analyzed the designability experimental provision, it is characterized in that: handwheel (7) also is installed on the said screw mechanism (8).
3, truss-frame structure according to claim 1 and load-bearing capacity are analyzed the designability experimental provision, it is characterized in that: the upper end of said framework (13) is provided with the framework of band chute and puts the beams in place (5), and truss (1) is installed in the chute of framework upper beam (5) by bearing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200300720U CN201262795Y (en) | 2008-08-26 | 2008-08-26 | Truss structure and experimental apparatus for analyzing and designing bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200300720U CN201262795Y (en) | 2008-08-26 | 2008-08-26 | Truss structure and experimental apparatus for analyzing and designing bearing capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262795Y true CN201262795Y (en) | 2009-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200300720U Expired - Fee Related CN201262795Y (en) | 2008-08-26 | 2008-08-26 | Truss structure and experimental apparatus for analyzing and designing bearing capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262795Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426808A (en) * | 2011-11-03 | 2012-04-25 | 西安交通大学 | Planar truss structural stability mechanics experimental apparatus |
| CN102706681A (en) * | 2012-06-08 | 2012-10-03 | 武汉中岩科技有限公司 | Bailey sheet detecting device and method |
| CN102750856A (en) * | 2012-05-30 | 2012-10-24 | 浙江科技学院 | Experiment model for continuous beam |
| CN102809631A (en) * | 2012-08-15 | 2012-12-05 | 绍兴文理学院 | Truss structure damage diagnosis method |
| CN102809632A (en) * | 2012-08-15 | 2012-12-05 | 绍兴文理学院 | Damage diagnosis equipment for truss structure |
| CN103136992A (en) * | 2011-11-28 | 2013-06-05 | 南京航空航天大学 | Multi-functional combined type mechanical testing method |
| CN103136990A (en) * | 2011-11-28 | 2013-06-05 | 南京航空航天大学 | Combined truss mechanics experimental device |
| CN106248384A (en) * | 2016-09-12 | 2016-12-21 | 西安航天动力试验技术研究所 | A kind of power for liquid propellant rocket engine test transmits Change-over frame and method for designing |
| CN109708565A (en) * | 2019-02-14 | 2019-05-03 | 北京市劳动保护科学研究所 | A kind of monitoring device and system of truss structure |
| CN111932998A (en) * | 2020-08-11 | 2020-11-13 | 南京航空航天大学 | Plane truss comprehensive experiment device |
-
2008
- 2008-08-26 CN CNU2008200300720U patent/CN201262795Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426808A (en) * | 2011-11-03 | 2012-04-25 | 西安交通大学 | Planar truss structural stability mechanics experimental apparatus |
| CN103136992A (en) * | 2011-11-28 | 2013-06-05 | 南京航空航天大学 | Multi-functional combined type mechanical testing method |
| CN103136990A (en) * | 2011-11-28 | 2013-06-05 | 南京航空航天大学 | Combined truss mechanics experimental device |
| CN102750856A (en) * | 2012-05-30 | 2012-10-24 | 浙江科技学院 | Experiment model for continuous beam |
| CN102750856B (en) * | 2012-05-30 | 2014-07-02 | 浙江科技学院 | Experiment model for continuous beam |
| CN102706681A (en) * | 2012-06-08 | 2012-10-03 | 武汉中岩科技有限公司 | Bailey sheet detecting device and method |
| CN102706681B (en) * | 2012-06-08 | 2014-10-15 | 武汉中岩科技有限公司 | Bailey sheet detecting device and method |
| CN102809631A (en) * | 2012-08-15 | 2012-12-05 | 绍兴文理学院 | Truss structure damage diagnosis method |
| CN102809632A (en) * | 2012-08-15 | 2012-12-05 | 绍兴文理学院 | Damage diagnosis equipment for truss structure |
| CN106248384A (en) * | 2016-09-12 | 2016-12-21 | 西安航天动力试验技术研究所 | A kind of power for liquid propellant rocket engine test transmits Change-over frame and method for designing |
| CN109708565A (en) * | 2019-02-14 | 2019-05-03 | 北京市劳动保护科学研究所 | A kind of monitoring device and system of truss structure |
| CN111932998A (en) * | 2020-08-11 | 2020-11-13 | 南京航空航天大学 | Plane truss comprehensive experiment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 |