CN109406127A - A kind of backed experimental provision for increasing test specimen load of band - Google Patents
A kind of backed experimental provision for increasing test specimen load of band Download PDFInfo
- Publication number
- CN109406127A CN109406127A CN201811450150.7A CN201811450150A CN109406127A CN 109406127 A CN109406127 A CN 109406127A CN 201811450150 A CN201811450150 A CN 201811450150A CN 109406127 A CN109406127 A CN 109406127A
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- test specimen
- framework
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- block
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 35
- 239000010959 steel Substances 0.000 claims description 35
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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 present invention relates to a kind of backed experimental provisions for increasing test specimen load of band, and including the load vessel being suspended on test specimen, supply container connects load vessel and supply container pipeline, the transfer pump on pipeline is arranged in；Support includes matrix, and the first bearing in matrix, outer framework is arranged in, and the second bearing in outer framework is arranged in the interior framework inside outer framework；Outer framework is equipped with longitudinally projecting axis, and interior framework is equipped with vertical prominent axis, and on longitudinally projecting axis, second bearing covers on vertical prominent axis first axle bearing sleeve；There are two supports, and one end of test specimen is fixed therein on the interior framework an of support, and the other end of test specimen is fixed on the interior framework of another support.Experimental provision can be tested under different boundary constraint condition, belong to the technical field of test specimen experimental provision.
Description
Technical field
The present invention relates to the backed increase test specimen loads of the technical field of test specimen experimental provision more particularly to a kind of band
Experimental provision.
Background technique
Currently, support is typically all the constraint condition on only one boundary, research different boundary constraint condition is wanted in this way
The inplane stability problem or Out-of-plane Stability problem of lower test specimen, it is necessary to different supports, this will increase experimental cost,
And move test specimen on another support from a support to, it will also result in operational inconvenience, multiple support areas occupied are made
At experimental cost height, experimental implementation trouble.
Summary of the invention
For the technical problems in the prior art, the object of the present invention is to provide a kind of backed increase examinations of band
The experimental provision of part load can be tested under different boundary constraint condition.
In order to achieve the above object, the present invention adopts the following technical scheme:
The backed experimental provision for increasing test specimen load of a kind of band, including the load vessel being suspended on test specimen, supply
Container connects load vessel and supply container pipeline, the transfer pump on pipeline is arranged in；
Support includes matrix, is arranged in the first bearing in matrix, outer framework, the interior framework inside outer framework, if
Set the second bearing in outer framework；Outer framework is equipped with longitudinally projecting axis, and interior framework is equipped with vertical prominent axis, first bearing
It covers on longitudinally projecting axis, second bearing covers on vertical prominent axis；
There are two supports, and one end of test specimen is fixed therein on the interior framework an of support, and the other end of test specimen is fixed on
On the interior framework of another support.
Further, matrix includes horizontal sole piece, two pieces of vertical blocks for being separately fixed at horizontal sole piece both ends are located at vertical block
The raggle block of upper end；Raggle block and vertical block form the through-hole for accommodating first bearing, and raggle block is bolted on vertical block.
Further, horizontal sole piece and vertical block be it is integrally formed, raggle block has two pieces, and two pieces of raggle blocks are located at two pieces
The upper surface of vertical block；
There are two first bearings, and a first bearing is located therein the through-hole that one piece of raggle block and one of vertical block are formed
Interior, another first bearing is located in the through-hole that another piece of raggle block and another piece of vertical block are formed；The both ends of outer framework are equipped with vertical
To prominent axis, for a first axle bearing sleeve wherein on a longitudinally projecting axis, another first axle bearing sleeve is longitudinally prominent at another
On shaft；
There are two second bearings, and a second bearing is located at the top of outer framework, another second bearing is located at outer framework
Lower part；The upper and lower ends of interior framework are equipped with vertical prominent axis, and a second bearing set vertically protrudes on axis for one wherein,
Another second bearing covers on another vertical prominent axis.
Further, experimental provision further includes covering the first spring on longitudinally projecting axis and covering on vertical prominent axis
Second spring, one end of the first spring mutually fixes with longitudinally projecting axis, and the other end of the first spring is mutually fixed with vertical block, second
One end of spring is mutually fixed with interior framework, and the other end of second spring is mutually fixed with outer framework.
Further, experimental provision further includes screw, outer framework is equipped with screw hole, and screw passes through the spiral shell on outer framework
Wire hole simultaneously withstands interior framework.
Further, interior framework and outer framework are in square frame-shaped.
Further, test specimen is the I-steel of arch.
Further, experimental provision further includes multiple cushion blocks, a plurality of screw rod and multiple nuts；Screw rod through interior framework,
The horizontal part and cushion block of I-steel；The upper surface and lower end surface of I-steel horizontal part are equipped with cushion block, and nut is spun on screw rod simultaneously
Withstand the end face of cushion block.
Further, a plurality of screw rod is set gradually along the width direction of interior framework.
Further, I-steel is equipped with multiple through-holes, load vessel is by rope suspensions on I-steel.
Generally speaking, the present invention has the advantage that
In the present invention, support can be used to provide different edge-restraint conditions, and experimental provision can be used to study difference
Outer (being bent outwardly) stability problem of the inplane stability problem or plane of test specimen under edge-restraint condition.Outer framework can revolve
Turn or do not rotate, interior framework can also be rotated or not rotated, and the first spring and second spring can be set.Structure of the invention letter
It is single, practical, solve the problems, such as test specimen load experiment device an edge-restraint condition can only be provided.Pass through transfer pump
Liquid is poured into, realizes uniform load, and can uniformly unload, load can be controlled at any time and stops load.When load, press
The switch of transfer pump, out of, supply container enters suspention load vessel, liquid constantly at the uniform velocity increases liquid, the concentrated force of load
Constantly increase.Drainage switch can be set in the load vessel bottom of suspention, can carry out at the uniform velocity or control speed unloads.The present invention
Other than various boundary may be implemented, the test specimen in different type section and different cross sections may also adapt to.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of experimental provision.
Fig. 2 is the structural schematic diagram of support.
Fig. 3 is the cross-sectional view of vertical block and raggle block left view direction.
Fig. 4 is the top view of outer framework.
Fig. 5 is the left view of interior framework.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
It is now attached to what is occurred in Figure of description for the ease of uniformly checking each appended drawing reference inside Figure of description
Icon note is unitedly described as follows:
1 is horizontal sole piece, and 2 be vertical block, and 3 be raggle block, and 4 be outer framework, and 5 be longitudinally projecting axis, and 6 be interior framework, and 7 be vertical
Prominent axis, 8 be nut, and 9 be cushion block, and 10 be screw rod, and 11 be I-steel, and 12 be supply container, and 13 be pipeline, and 14 hold for load
Device, 15 be transfer pump.
For sake of convenience, now hereafter described orientation is described as follows: hereafter described direction and Fig. 1 itself up and down
Direction up and down it is consistent, hereafter described front-rear direction is consistent with the left and right directions of Fig. 2, front-rear direction, that is, longitudinal direction.
As shown in Figure 1, Figure 2, a kind of backed experimental provision for increasing test specimen load of band, including be suspended on test specimen
Load vessel, supply container connects load vessel and supply container pipeline, the transfer pump on pipeline is arranged in.The one of pipeline
End is connected in load vessel, and the other end of pipeline is connected on supply container, and transfer pump can be by the liquid in supply container
It is pumped into the inside of load vessel, so that test specimen bears pulling force straight down, is then further tested.Test specimen is
The I-steel or straight beam of arch.
As shown in connection with fig. 2, support includes matrix, and the first bearing in matrix is arranged in, and outer framework is located inside outer framework
Interior framework, the second bearing in outer framework is set.Interior framework and outer framework are in square frame-shaped, and the size of interior framework is small by one
A bit, interior framework is placed on to the inside of outer framework, and also there are gaps between interior framework and outer framework.As shown in connection with fig. 4, outline border
Part is equipped with longitudinally projecting axis, and as shown in connection with fig. 5, interior framework is equipped with vertical prominent axis, and first axle bearing sleeve is in longitudinally projecting axis
On, second bearing covers on vertical prominent axis.
As shown in Figure 1, Figure 2, one end (left end) of test specimen is fixed therein (left side) support there are two supports
On interior framework, the other end (right end) of test specimen is fixed on the interior framework of another (the right) support.Two support bilateral symmetries
Setting.
As shown in connection with fig. 2, matrix includes horizontal sole piece, two pieces of vertical blocks for being separately fixed at horizontal sole piece rear and front end, position
Raggle block in vertical block upper end.One piece of vertical block is located at the front end of horizontal sole piece, and another piece of vertical block is located at the rear end of horizontal sole piece, each
The upper surface that block founds block is designed with raggle block.As shown in connection with fig. 3, raggle block and vertical block form the through-hole for accommodating first bearing, i.e.,
First bearing is placed in the through hole.Raggle block is bolted on vertical block, i.e., bolt passes through raggle block and is spun in vertical block, spiral shell
Bolt is tightened a bit, then raggle block and vertical block are tightly held in together, and bolt is unscrewed a bit, then raggle block and vertical block slightly loosen one
Point.
Horizontal sole piece and vertical block be it is integrally formed, raggle block has two pieces, and two pieces of raggle blocks are located at the upper end of two pieces of vertical blocks
Face.
There are two first bearings, and (in front) first bearing is located therein one piece of (in front) raggle block and one of
In the through-hole that vertical block (in front) is formed, another (back) first bearing is located at another piece of (back) raggle block and another piece
(back) is stood in the through-hole that block is formed.The rear and front end of outer framework is equipped with longitudinally projecting axis, (in front) first axle
For bearing sleeve wherein on (in front) longitudinally projecting axis, another (back) first axle bearing sleeve is vertical in another (back)
To on prominent axis.
There are two second bearings, and (top) second bearing is located at the top of outer framework, another (following) the
Two bearings are located at the lower part of outer framework.The upper and lower ends of interior framework are equipped with vertical prominent axis, (top) second bearing
Wherein on one (top) vertical prominent axis, another (below) second bearing covers (below) vertical at another set
On prominent axis.It is to draw in first bearing and second bearing figure.
Experimental provision further includes covering the first spring on longitudinally projecting axis and covering in the vertical second spring protruded on axis,
One end of first spring is mutually fixed with longitudinally projecting axis, and the other end of the first spring is mutually fixed with vertical block, one end of second spring
It is mutually fixed with interior framework, the other end of second spring is mutually fixed with outer framework.It is not drawn into first spring and second spring figure.
First spring can be located in the through-hole that vertical block and raggle block are formed, and second spring can be located in the through-hole of outer framework.
Experimental provision further includes screw, and outer framework is equipped with screw hole, and screw passes through the screw hole on outer framework and withstands
Interior framework, after screw passes through outer framework and withstands interior framework, interior framework cannot be had rotated using vertically protruding axis as axis.
It is not drawn into screw figure.
The mode that I-steel is fixed on interior framework has very much, and a kind of mode is: experimental provision further includes multiple cushion blocks, more
Screw rod and multiple nuts.Each screw rod all sequentially passes through the top of interior framework, first piece of cushion block, on I-steel from top to bottom
The lower part of the following horizontal part of the horizontal part on side, second piece of cushion block, third block cushion block, I-steel, the 4th piece of cushion block, interior framework.
The upper surface and lower end surface of I-steel horizontal part are equipped with cushion block, and nut is spun on the end face on screw rod and withstanding cushion block, each
Multiple nuts are designed on screw rod, and there is nut in the upper surface of first piece of cushion block, there are nut, third in the lower end surface of second piece of cushion block
There is nut in the upper surface of block cushion block, and there is nut in the lower end surface of the 4th piece of cushion block, by nut and cushion block, I-steel can be fixed
On interior framework.
A plurality of screw rod is set gradually along the width direction (front-rear direction) of interior framework.If the width of the horizontal part of I-steel
Bigger, then screw rod is slightly positioned close to the place of outer framework, be adapted to the I-steel of different in width in this way.
I-steel is equipped with multiple through-holes, and load vessel is by rope suspensions on I-steel.Load vessel is suspended on work
On the middle position of word steel.
This experimental provision is for providing a variety of different edge-restraint conditions, different boundary constraint items for I-steel
Part is provided by support: being tightened or is unscrewed the bolt on raggle block, then outer framework cannot be rotated or can be rotated；It is passed through with screw outer
Framework simultaneously withstands interior framework, then interior framework cannot be rotated relative to outer framework；It is respectively equipped on longitudinally projecting axis and vertical prominent axis
The elasticity of outer framework and the rotation of interior framework, the first spring of different-stiffness and second can be set in first spring and second spring
Spring corresponds to different elasticity.(i.e. in face hinged or face whether i.e. all edge-restraint conditions are all the rotations by outer framework
It is interior affixed), the rotation of interior framework whether (affixed outside hinged or face i.e. outside face), the first spring and second spring presence or absence and
Rigidity (elastic connection outside elastic connection or face i.e. in face) carrys out permutation and combination and then forms different edge-restraint conditions, such as
A certain edge-restraint condition is: it is hinged outside affixed in face, face, the first spring, second spring is not present；For example another side again
Bound constrained condition is: elastic connection in face, affixed outside face, and there are the first spring, the spring of replaceable different-stiffness is realized different
Elastic connection.
The working principle of this experimental provision: support is fixed on some platform, then by the I-steel of arch and inside casing
Part is fixed together, and then load vessel is suspended on I-steel, and transfer pump can supply liquid into load vessel, thus
So that load vessel is increasingly heavier, so that pulling force suffered by I-steel is increasing.Pulling force suffered by from the I-steel to arch
In increasing process, I-steel can be bent down at leisure, i.e. the radian of arch is smaller and smaller, the drawing suffered by the I-steel
After power reaches a certain level, I-steel can be bent outwardly, and be bent outwardly and referred to centered on the central plane of I-steel, work
Word steel is forward or backward curved.It is smaller and smaller in the arch radian of I-steel until during I-steel is bent outwardly, can be with
Using the relevant experimental data of other instruments record I-steel.Support can be used to provide different edge-restraint conditions, test
The inplane stability problem or plane outer (being bent outwardly) that device can be used to study test specimen under different boundary constraint condition are surely
Qualitative question.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of backed experimental provision for increasing test specimen load of band, it is characterised in that: including the load being suspended on test specimen
Container, supply container connect load vessel and supply container pipeline, the transfer pump on pipeline are arranged in；
Support includes matrix, and the first bearing in matrix, outer framework is arranged in, and the interior framework inside outer framework is arranged and exists
Second bearing in outer framework；Outer framework is equipped with longitudinally projecting axis, and interior framework is equipped with vertical prominent axis, and first axle bearing sleeve exists
On longitudinally projecting axis, second bearing covers on vertical prominent axis；
There are two supports, and one end of test specimen is fixed therein on the interior framework an of support, and the other end of test specimen is fixed on another
On the interior framework of a support.
2. a kind of backed experimental provision for increasing test specimen load of band described in accordance with the claim 1, it is characterised in that: matrix
Including horizontal sole piece, two pieces of vertical blocks for being separately fixed at horizontal sole piece both ends, the raggle block positioned at vertical block upper end；Raggle block and vertical block shape
At the through-hole for accommodating first bearing, raggle block is bolted on vertical block.
3. the backed experimental provision for increasing test specimen load of a kind of band according to claim 2, it is characterised in that: horizontal
Sole piece and vertical block be it is integrally formed, raggle block has two pieces, and two pieces of raggle blocks are located at the upper surface of two pieces of vertical blocks；
There are two first bearings, and a first bearing is located therein in the through-hole that one piece of raggle block and one of vertical block are formed, separately
One first bearing is located in the through-hole that another piece of raggle block and another piece of vertical block are formed；The both ends of outer framework are equipped with longitudinally projecting
Axis, a first axle bearing sleeve is wherein on a longitudinally projecting axis, another first axle bearing sleeve is on another longitudinally projecting axis；
There are two second bearings, and a second bearing is located at the top of outer framework, another second bearing is located under outer framework
Portion；The upper and lower ends of interior framework are equipped with vertical prominent axis, and a second bearing set vertically protrudes on axis for one wherein, another
A second bearing covers on another vertical prominent axis.
4. the backed experimental provision for increasing test specimen load of a kind of band according to claim 2, it is characterised in that: experiment
Device further includes covering the first spring on longitudinally projecting axis and covering the second spring on vertical protrusion axis, and the one of the first spring
End is mutually fixed with longitudinally projecting axis, and the other end of the first spring is mutually fixed with vertical block, and one end of second spring is mutually solid with interior framework
Fixed, the other end of second spring is mutually fixed with outer framework.
5. a kind of backed experimental provision for increasing test specimen load of band described in accordance with the claim 1, it is characterised in that: experiment
Device further includes screw, and outer framework is equipped with screw hole, and screw passes through the screw hole on outer framework and withstands interior framework.
6. a kind of backed experimental provision for increasing test specimen load of band described in accordance with the claim 1, it is characterised in that: inside casing
Part and outer framework are in square frame-shaped.
7. a kind of backed experimental provision for increasing test specimen load of band described in accordance with the claim 1, it is characterised in that: test specimen
For the I-steel of arch.
8. the backed experimental provision for increasing test specimen load of a kind of band according to claim 7, it is characterised in that: experiment
Device further includes multiple cushion blocks, a plurality of screw rod and multiple nuts；Screw rod is through interior framework, the horizontal part and cushion block of I-steel；Work
The upper surface and lower end surface of word steel horizontal part are equipped with cushion block, and nut is spun on the end face on screw rod and withstanding cushion block.
9. the backed experimental provision for increasing test specimen load of a kind of band according to claim 8, it is characterised in that: a plurality of
Screw rod is set gradually along the width direction of interior framework.
10. the backed experimental provision for increasing test specimen load of a kind of band according to claim 7, it is characterised in that: work
Word steel is equipped with multiple through-holes, and load vessel is by rope suspensions on I-steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450150.7A CN109406127B (en) | 2018-11-30 | 2018-11-30 | Experimental device for increase test piece load with support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450150.7A CN109406127B (en) | 2018-11-30 | 2018-11-30 | Experimental device for increase test piece load with support |
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| CN109406127A true CN109406127A (en) | 2019-03-01 |
| CN109406127B CN109406127B (en) | 2023-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608907A (en) * | 2019-09-18 | 2019-12-24 | 广州大学 | Support for providing in-plane or out-of-plane elastic torsion restraint and experimental device comprising same |
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