CN105136578A - Beam type conversion device capable of eliminating inertia effect in drop-hammer impact tensile test - Google Patents
Beam type conversion device capable of eliminating inertia effect in drop-hammer impact tensile test Download PDFInfo
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- CN105136578A CN105136578A CN201510607538.3A CN201510607538A CN105136578A CN 105136578 A CN105136578 A CN 105136578A CN 201510607538 A CN201510607538 A CN 201510607538A CN 105136578 A CN105136578 A CN 105136578A
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Abstract
The invention discloses a beam type conversion device capable of eliminating the inertia effect in a drop-hammer impact tensile test, belongs to the technical field of testing equipment. The beam type conversion device comprises a drop hammer test machine, a beam type force transmission direction conversion mechanism, a limiting framework and a test piece connecting piece. With the adoption of the beam type conversion device provided by the invention, vertical impact load of the drop hammer is transformed into horizontal tension load, so that the inertia effect caused by vertical impact of the hammer head of the drop hammer test machine is eliminated; at the same time, the test device is simple in structure construction, not liable to overall buckling, simple to process and manufacture, and easy to control; besides, as the limiting framework is adopted, the tensile deformation of test pieces during testing is precisely controlled, the test safety is ensured; by regulating the size of the test piece and the falling weight energy, the test loading strain rate can be regulated, and both the strain rate effect and the dynamic mechanical property of practical engineering structure materials under impact load are simulated.
Description
Technical field
The invention belongs to testing equipment technical field, particularly a kind of drop impact tension test transfer beam device realizing elimination inertia force influence.
Background technology
At present, the scope that the equipment carrying out the tension test of structure shock resistance loads rate of strain according to material mainly can be divided into two kinds, the drop impact device adopted when the Hopkinson bar test unit adopted when corresponding respectively to high strain-rate and medium speed impact, and adopt rapid loading actuator during low velocity impact.Low velocity impact process during examples a large amount of in Practical Project all belongs to, for the test of problems, drop impact device is a kind of simple, reliable charger.
Drop hammer in vertical tensile impact conversion equipment existing, drop hammer along guide rail and vertically fall, test specimen fixing on vertical impulse test pedestal, thus the dynamic mechanical of research test specimen under impact load.But due to the existence of drop impact inertial force, be placed in the interior force snesor that drops hammer will record inertial force simultaneously, thus affect reasonable assessment structural elements impact resistance.And vertical tensile impact conversion device structure is complicated, test sample dimensions is limited, cannot carry out large scale test.In existing drop impact tension test truss conversion equipment, drop hammer along guide rail and vertically fall, vertical shock block, by truss conversion equipment, the vertical impact load dropped hammer is converted to horizontal stretch load, thus elimination inertia force influence, but due to self lateral rigidity of panel point complex structure, particularly truss little, destruction of a node or overall collapse destroy easily to cause truss to occur, have influence on stability and the accuracy of test figure.Meanwhile, existing apparatus does not have stop means, cannot realize accurate loading, has influence on the applicability of device.
Summary of the invention
Not easily reasonable quantitatively inertial force and sample dimensions is limited and existing drop impact tension test truss conversion equipment joint structure complexity and lateral rigidity little problem when measuring load for the existing vertical tensile impact conversion equipment that drops hammer, the present invention aims to provide a kind of novel drop impact tension test transfer beam device realizing eliminating inertia force influence, this test unit can realize eliminating inertial force to the impact of test findings, horizontal stretch test is carried out under vertical Impact Load, lateral bucking phenomenon is not easily there is with timer simple structure, processing and manufacturing is simple and easy to control, and by the accurately Control experiment test specimen stretcher strain of spacing framework energy, warranty test safety, conveniently carry out manufacturing and designing of test unit, and the dynamic mechanical of various types of materials under Impact Load in practical structures can be simulated more really.
For achieving the above object, the technical solution adopted in the present invention is, the described drop impact tension test transfer beam device realizing elimination inertia force influence, comprises drop hammer tester, beam type power transmission direction throw-over gear, spacing framework and test specimen web member;
Described drop hammer tester comprises many guide rails, is fixed on the positioning fixture on many guide rails, is hooked on the hammer body on positioning fixture;
Described beam type power transmission direction throw-over gear is made up of the vertical columns of two " L " ellbeams and both sides and fixing diagonal brace, " L " ellbeam comprises two horizontal transfer beam, two vertical transfer beam, node end plate, joint lug plate, node bearing pin, roller bearing, vertical transfer beam bottom arranges positioning screw, in the middle of horizontal transfer beam, wedge shape bloom is set, voussoir axle, " L " ellbeam is fixed on vertical columns by dull and stereotyped hinge, on fixing diagonal brace;
Described limitting casing chord position, below wedge shape bloom, comprises box beam, frame column, framework diagonal brace;
Described test specimen web member comprises end plate, otic placode, sensor, test specimen, bearing pin.
Below the present invention is made and further illustrating.
The horizontal transfer beam of described every root is one-body molded with vertical transfer beam or by being welded into one respectively.
Further, described horizontal transfer beam medial end is equipped with two pieces of joint lug plates, and each roller bearing is fastened in horizontal transfer beam respectively by bearing pin and joint lug plate, and wedge shape bloom is vertically placed in the middle of two roller bearings and forms moveable hinge.
Further, described horizontal transfer beam outboard end is equipped with one piece of node end plate, and every block node end plate is all connected with two pieces of joint lug plates, and node bearing pin is each passed through joint lug plate and joint lug plate is connected to form dull and stereotyped hinge.
Further, described box beam and frame column and framework diagonal brace are by being welded into one, and box beam is embedded with three linear bearings, and voussoir axle vertically inserts in linear bearing.
Above-mentioned horizontal transfer beam is preferably two, and vertical transfer beam is preferably two, and vertical columns is preferably two, and fixing diagonal brace is preferably two, and frame column is preferably two, and framework diagonal brace is preferably two.
Above mechanism arrangement, described " L " ellbeam forms dull and stereotyped hinge by joint lug plate and node bearing pin and is fixed on vertical columns and fixing diagonal brace.Wedge shape bloom in the middle part of beam type power transmission direction throw-over gear is vertically placed in the middle of two bearings and forms moveable hinge.When drop hammer the wedge shape bloom of tup action in the middle part of beam type power transmission direction throw-over gear time, wedge shape bloom band dynamic bearing makes " L " ellbeam that the unitary rotation being rotation center with flat board hinge occur, in rotation process, the vertical impulsive force of hammer body is passed to test specimen web member by " L " ellbeam, namely the horizontal stretch test of test specimen under vertical Impact Load is achieved, simultaneously because sensor is positioned on test specimen web member thus eliminate the impact of drop impact inertial force.Wedge shape bloom linearly collides with spacing framework after bearing downward translation certain distance and stops continuing to move, thus realizes the object of Control experiment load and displacement.
Compared with prior art, the invention has the beneficial effects as follows: the present invention can realize drop impact tension test, and eliminate the inertia force influence existed in test, the stressing conditions of practical structures component under Impact Load can be simulated really, test unit structure simple structure simultaneously, not easily overall collapse phenomenon occurs, processing and manufacturing is simple and easy to control, reliable and stable.
Below in conjunction with drawings and Examples, the present invention is further elaborated.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the structural representation (facing) of beam type power transmission direction throw-over gear of the present invention;
Fig. 3 is the structural representation (overlooking) of beam type power transmission direction throw-over gear of the present invention;
Fig. 4 is the structural representation of spacing framework of the present invention;
Fig. 5 is the structural representation of test specimen web member of the present invention;
Fig. 6 is the structural representation of wedge shape bloom of the present invention.
In the drawings:
1,2-drops hammer guide rail, 3-positioning fixture, 4-hammer body,
5-wedge shape bloom, 6,7,8,9,25,26,27,28,29,30,31,32-joint lug plate,
10,11,33,34-node bearing pin, 12,13-roller bearing, 14,15,16-voussoir axle,
The horizontal transfer beam of 17,18-, the vertical transfer beam of 19,20-, 21,22,23,24-positioning screw,
35,36,37,38-node end plate, 39,40-vertical columns, 41,42-fixes diagonal brace,
43-box beam, 44,45-framework diagonal brace, 46,47-frame column,
48-test specimen, 49,50,59,60,63,64-end plate, 51,52,53,54,57,58-otic placode,
55,56-bearing pin, 61,62-sensor.
Embodiment
A kind of drop impact tension test transfer beam device realizing realizing eliminating inertia force influence is made up of, see Fig. 1 drop hammer tester, beam type power transmission direction throw-over gear, firm banking and test specimen web member.Drop hammer tester as shown in Figure 1, its by guide rail 1,2, positioning fixture 3, hammer body 4 form.Positioning fixture 3 is fixed on guide rail 1 and 2, and hammer body 4 is hooked on positioning fixture 3.As shown in Figures 2 and 3, it is combined by wedge shape bloom 5,12 pieces of otic placode 6,7,8,9,25,26,27,28,29,30,31,32, four root node bearing pins, 10,11,33,34, two roller bearings 12,13, three voussoir axles 14,15,16, two horizontal transfer beam, 17,18, two vertical transfer beam, 19,20, four positioning screws, 21,22,23,24, four pieces of node end plates, 35,36,37,38, two vertical columns 39,40, two fixing diagonal braces 41,42 in beam type power transmission direction throw-over gear.Horizontal transfer beam 17,18 is respectively with a vertical transfer beam 19,20 one-body molded or by being welded into one.Horizontal transfer beam 17,18 end is all welded with two pieces of otic placodes 6,7,8,9, each roller bearing 12,13 is fastened in horizontal transfer beam 17,18 respectively by bearing pin 10,11 and joint lug plate 6,7,8,9, and wedge shape bloom 5 is vertically placed on formation moveable hinge in the middle of two roller bearings 12,13 and allows certain rotation and translation.Horizontal transfer beam 17,18 other end is all welded with one piece of node end plate 35,36, every block node end plate 35,36 is all connected with two pieces of joint lug plates 25,26,27,28, and node bearing pin 33,34 is each passed through joint lug plate 25,26,27,28 and joint lug plate 29,30,31,32 is connected to form dull and stereotyped hinge.As shown in Figure 4, it is by box beam 43 for spacing framework, frame column 46,47, and framework diagonal brace 44,45 forms.Box beam 43 and frame column 46,47 and framework diagonal brace 44,45 are by being welded into one.Test specimen web member as shown in Figure 5, its by six pieces of end plates, 49,50,59,60,63,64, six pieces of otic placodes 51,52,53,54,57,58, sensor 61,62, bearing pin 55,56, test specimen 48 forms.Otic placode 51,52,53,54,57,58 is connected with end plate 49,50,59,60 respectively by welding, and sensor 61,62 two ends are connected with end plate 59,60,63,64 respectively by bolt, and test specimen 48 two ends are connected with end plate 63,64 by welding.
When the present invention is used for drop hammer tensile impact test, when the hammer body 4 that drops hammer falls along guide rail 1,2 and acts on wedge shape bloom 5, drive roller bearing 12,13 moves downward by wedge shape bloom 5 instantaneously as shown in Figure 2, and causing " L " ellbeam to occur with the flat board hinge of bearing pin 33,34 formation is the unitary rotation of rotation center.Vertical transfer beam 19,20 lower end drives bearing pin 55,56 to two lateral movements, and be applied to test specimen 48 1 horizontal impact tensile loads, tension impact power is recorded by the sensor 61,62 on test specimen web member simultaneously, and wedge shape bloom 5 stops continuing motion by colliding with box beam 43 after voussoir axle 14,15, the 16 linearly downward translation certain distance of bearing and realizes Control experiment load and test specimen displacement.The present invention from the above can realize the drop hammer tensile impact test eliminating inertia force influence.
The content that above-described embodiment is illustrated should be understood to these embodiments only for being illustrated more clearly in the present invention, and be not used in and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Claims (9)
1. can realize the drop impact tension test transfer beam device eliminating inertia force influence, it is characterized in that, comprise drop hammer tester, beam type power transmission direction throw-over gear, spacing framework and test specimen web member;
Described drop hammer tester comprises two guide rails (1,2), is fixed on the positioning fixture (3) on two guide rails (1,2), is hooked on the hammer body (4) on positioning fixture (3);
Described beam type power transmission direction throw-over gear is made up of the vertical columns of two " L " ellbeams and both sides and fixing diagonal brace, " L " ellbeam comprises two horizontal transfer beam (17, 18), two vertical transfer beam (19, 20), node end plate (35, 36, 37, 38), joint lug plate (6, 7, 8, 9, 25, 26, 27, 28, 29, 30, 31, 32), node bearing pin (10, 11, 33, 34), roller bearing (12, 13), vertical transfer beam bottom arranges positioning screw (21, 22, 23, 24), in the middle of horizontal transfer beam, wedge shape bloom (5) is set, voussoir axle (14, 15, 16), " L " ellbeam is fixed on vertical columns (39 by dull and stereotyped hinge, 40), fixing diagonal brace (41, 42) on,
Described limitting casing chord position, in wedge shape bloom (5) below, comprises box beam (43), frame column (46,47), framework diagonal brace (44,45);
Described test specimen web member comprises end plate (49,50,59,60,63,64), otic placode (51,52,53,54,57,58), sensor (61,62), test specimen (48), bearing pin (55,56).
2. the drop impact tension test transfer beam device realizing elimination inertia force influence according to claim 1, it is characterized in that, the horizontal transfer beam of described every root (17,18) is one-body molded with vertical transfer beam (19,20) or by being welded into one respectively.
3. the drop impact tension test transfer beam device realizing elimination inertia force influence according to claim 1, it is characterized in that, described horizontal transfer beam (17,18) medial end is equipped with two pieces of joint lug plates (6,7,8,9), each roller bearing (12,13) is fastened in horizontal transfer beam (17,18) respectively by bearing pin (10,11) and joint lug plate (6,7,8,9), and wedge shape bloom (5) is vertically placed in the middle of two roller bearings (12,13) and forms moveable hinge.
4. the drop impact tension test transfer beam device realizing elimination inertia force influence according to claim 1, it is characterized in that, described horizontal transfer beam (17,18) outboard end is equipped with one piece of node end plate (35,36), every block node end plate (35,36) is all connected with two pieces of joint lug plates (25,26,27,28), and node bearing pin (33,34) is each passed through joint lug plate (25,26,27,28) and is connected to form dull and stereotyped hinge with joint lug plate (29,30,31,32).
5. the drop impact tension test transfer beam device realizing elimination inertia force influence according to claim 1, it is characterized in that, described box beam (43) and frame column (46,47) and framework diagonal brace (44,45) are by being welded into integrally.
6. according to the drop impact tension test truss conversion equipment one of Claims 1 to 5 Suo Shu, it is characterized in that, described box beam (43) is embedded with three linear bearings, and voussoir axle (14,15,16) vertically inserts in linear bearing.
7. according to the drop impact tension test truss conversion equipment one of Claims 1 to 5 Suo Shu, it is characterized in that, described horizontal transfer beam (17,18) and vertical transfer beam (19,20) are two.
8. according to the drop impact tension test truss conversion equipment one of Claims 1 to 5 Suo Shu, it is characterized in that, described vertical columns (39,40) and fixing diagonal brace (41,42) are two.
9. according to the drop impact tension test truss conversion equipment one of Claims 1 to 5 Suo Shu, it is characterized in that, described frame column (46,47) and framework diagonal brace (44,45) are two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510607538.3A CN105136578B (en) | 2015-09-22 | 2015-09-22 | A kind of achievable drop impact tension test transfer beam device for eliminating inertia force influence |
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| CN201510607538.3A CN105136578B (en) | 2015-09-22 | 2015-09-22 | A kind of achievable drop impact tension test transfer beam device for eliminating inertia force influence |
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| CN105136578B CN105136578B (en) | 2018-01-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784509A (en) * | 2016-03-10 | 2016-07-20 | 长江大学 | Drop-hammer impact loading system |
| CN109708865A (en) * | 2019-01-29 | 2019-05-03 | 杭州邦威机电控制工程有限公司 | A kind of new test support for node of column and beam test |
| CN110618027A (en) * | 2019-11-10 | 2019-12-27 | 大连理工大学 | Novel wedge cantilever beam loading device |
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| CN204374012U (en) * | 2015-01-29 | 2015-06-03 | 湖南大学 | A kind of drop impact tension test truss conversion equipment realizing elimination inertia force influence |
| CN204988885U (en) * | 2015-09-22 | 2016-01-20 | 湖南大学 | Can realize eliminating hammer impact tensile test beam type conversion equipment that falls of inertial force influence |
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2015
- 2015-09-22 CN CN201510607538.3A patent/CN105136578B/en not_active Expired - Fee Related
Patent Citations (8)
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| JPH07270291A (en) * | 1994-03-29 | 1995-10-20 | Toyoda Gosei Co Ltd | Low tensile-stress test device |
| US5677494A (en) * | 1996-03-05 | 1997-10-14 | Mcdonnell Douglas Corporation | Method for high strain-rate testing of specimens |
| JP2011149696A (en) * | 2008-05-09 | 2011-08-04 | Kokusai Keisokki Kk | Impact testing device |
| CN102279127A (en) * | 2011-07-05 | 2011-12-14 | 湖南大学 | Conversion device capable of realizing drop hammer tensile impact test |
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| CN204374012U (en) * | 2015-01-29 | 2015-06-03 | 湖南大学 | A kind of drop impact tension test truss conversion equipment realizing elimination inertia force influence |
| CN204988885U (en) * | 2015-09-22 | 2016-01-20 | 湖南大学 | Can realize eliminating hammer impact tensile test beam type conversion equipment that falls of inertial force influence |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784509A (en) * | 2016-03-10 | 2016-07-20 | 长江大学 | Drop-hammer impact loading system |
| CN109708865A (en) * | 2019-01-29 | 2019-05-03 | 杭州邦威机电控制工程有限公司 | A kind of new test support for node of column and beam test |
| CN109708865B (en) * | 2019-01-29 | 2024-01-30 | 杭州邦威机电控制工程有限公司 | A test support for column beam node is experimental |
| CN110618027A (en) * | 2019-11-10 | 2019-12-27 | 大连理工大学 | Novel wedge cantilever beam loading device |
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