CN105043738B - Crab-bolt long duration load/crack folding constant force loading test device repeatedly - Google Patents
Crab-bolt long duration load/crack folding constant force loading test device repeatedly Download PDFInfo
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- CN105043738B CN105043738B CN201510441214.7A CN201510441214A CN105043738B CN 105043738 B CN105043738 B CN 105043738B CN 201510441214 A CN201510441214 A CN 201510441214A CN 105043738 B CN105043738 B CN 105043738B
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Abstract
The invention discloses a kind of crab-bolt long duration load/crack folding constant force loading test device repeatedly, including the top plate being distributed up and down and dynamic plate, hydraulic jack is provided between the top plate and dynamic plate, the dynamic plate lower end connects pressing plate by bushing, supporting plate is provided with below the pressing plate, the center of the pressing plate and supporting plate has placed thrust axis, the upper end of the thrust axis is connected after passing through pressing plate with the first fixing nut, pressure spring and pressure sensor are installed on thrust axis between the pressing plate and supporting plate, multiple connecting rods pass through supporting plate, pressing plate, it is spirally connected after dynamic plate and top plate with the second fixing nut.Folding constant force loading test device volume is compact repeatedly in crab-bolt long duration load/crack of the present invention, simple operation, cost economy and using accurate.
Description
Technical field
The present invention relates to a kind of loading test device, and in particular to folding is constant repeatedly in a kind of crab-bolt long duration load/crack
Tension load experimental rig.
Background technology
Crab-bolt is the anchoring assembly product for anchoring to connected piece on base material, is divided into mechanical anchor and chemical anchor bolts.Machine
Tool crab-bolt is that the crab-bolt to form anchorage effect is acted on using the rubbing action between connector and anchor hole or locking key, according to its work
Principle is divided into two classes：Base expanding and base expanding type crab-bolt, intumescent crab-bolt；Chemical anchor bolts are made up of metal screw and anchor adhesive, pass through anchoring
The cementing crab-bolt for forming anchorage effect of metal screw, chemical anchor bolts are divided into general chemistry crab-bolt and special back taper chemical anchors by glue
Bolt.
In recent years, as a large amount of developments of reconstruction of existing building, structural fortification increase year by year, as in engineering reinforcement
Conventional concrete structure connection by post-installed fastenings technology is developed faster, and crab-bolt can because of easy for construction, quick, economy and performance
By the features such as, its engineer applied is more and more, as curtain wall engineering, urban light rail and electrification railway contact net set up construction
Deng.The relationship between quality of crab-bolt is to the safety problem of building, once crab-bolt failure will appear from caving in for building, this is required must
Must there are a set of effective easily detection means and equipment to supervise the quality safety of crab-bolt.JG160-2004《Concrete expands
Type, reaming type building anchor bolt》And JGJ145-2013《Concrete structure post-anchoring technology code》It is the professional standard of crab-bolt, mark
To the long duration load performance of crab-bolt and crack, folding performance proposes requirement repeatedly in standard.Long duration load performance embodies crab-bolt
Durability, the situation in long-term loading process；Folding performance embodies cracked concrete of the crab-bolt in folding repeatedly repeatedly in crack
In situation.The two experiments are required for constant force load equipment, but all do not propose specific apparatus in standard.
The constant force test period is grown, and long duration load experiment needs 3 equipment to protect load at least six moon simultaneously, and crack is repeatedly
Switching test is also required to 5 equipment while protected carry nearly 2 hours, it is contemplated that Cost Problems, universal testing machine etc. are large-scale to be set
It is standby almost infeasible；It then becomes necessary to develop a set of small volume, simple operation, cost economy and use accurate constant drawing
Power loading test device, could guarantee test feasibility, the product quality of crab-bolt could be supervised, ensure the quality of architectural engineering
Safety.
The content of the invention
It is an object of the invention to provide a kind of crab-bolt long duration load/crack, the loading test of folding constant force fills repeatedly
Put, its compact, simple operation, cost economy and use are accurate.
In order to achieve the above object, the present invention provides a kind of crab-bolt long duration load/crack folding constant force load repeatedly
Experimental rig, including the top plate and dynamic plate being distributed up and down, hydraulic jack, the dynamic plate are provided between the top plate and dynamic plate
Lower end connects pressing plate by bushing, is provided with supporting plate below the pressing plate, and the center of the pressing plate and supporting plate has placed pulling force
Axle, the upper end of the thrust axis are connected after passing through pressing plate with the first fixing nut, the thrust axis between the pressing plate and supporting plate
On pressure spring and pressure sensor be installed, multiple connecting rods with second through fixing spiral shell after supporting plate, pressing plate, dynamic plate and top plate
Mother is spirally connected.
Further, the connecting rod is spirally connected by upper connecting rod and lower pillar stand and formed, and the upper connecting rod is from bottom to top through dynamic
It is spirally connected after plate and top plate with the second fixing nut.
Further, the lower pillar stand is the big stairstepping bar in the small bottom in top, and the supporting plate is arranged at lower pillar stand
On step surface.
Further, the lower end of each lower pillar stand is bolted with adjusting screw respectively.
Further, the thrust axis lower end is connected with bindiny mechanism, and the bindiny mechanism includes ball joint, the ball
Type joint upper end is hinged with thrust axis lower end, and the ball joint lower end is connected with fixture.
Further, the ball joint includes hollow connector, and the connector is the revolution that cross section is c-type
Body, the outer surface bottom of the thrust axis are provided with the annular slot with the collar flange form fit on connector top, the company
Joint is connected by annular slot with the collar flange on connector top, in being connected with the collar flange of the connector bottom
Empty bolt-joint cap, the inner chamber of the bolt-joint cap are provided with internal thread, and the bolt-joint cap and the fixture are spirally connected fixation.
Further, the outer surface of the connector is provided with the gap through its upper and lower end, the gap width and pulling force
The cross-sectional diameter of axle matches.
Further, the fixture is stairstepping bar, and the fixture outer surface of upper is provided with external screw thread, and the fixture passes through
The internal thread of external screw thread and bolt-joint cap is spirally connected fixation, and the fixture lower end is provided with the screwed hole for being used for being spirally connected with test specimen.
Further, the pressure spring is butterfly spring.
After such scheme, folding constant force loading test device leads to repeatedly in crab-bolt long duration load/crack of the present invention
Said structure design is crossed, in use, making hydraulic jack promote dynamic plate to move downward to hydraulic jack pressurization, dynamic plate is pushed away by bushing
Dynamic pressure plate down moves, and pressing plate compression pressure spring, pressure is reached pressure sensor, has setting when measuring test specimen
Pressure value, when the pressure value of the micro- super setting of pressure, stop the action of hydraulic jack, tighten after the first fixing nut to hydraulic oil
Cylinder carries out pressure release, now moves plate and is in free state, thrust caused by pressure spring is reacted on by pressing plate, the first fixing nut
On thrust axis, thrust axis carries out drawing by ball joint, fixture to test specimen, and the loading test device overall structure is compact
Flexibly, it is easy to install, and the connection between each part is to be detachably connected, beneficial to dismounting and easily transport, its simple operation, into
This economy, and due to there is the pressure value of pressure sensor real-time display, it is accurate that it is used.
Brief description of the drawings
Fig. 1 is the knot of embodiment one of crab-bolt long duration load/crack of the present invention folding constant force loading test device repeatedly
Structure schematic diagram；
Fig. 2 is the knot of embodiment two of crab-bolt long duration load/crack of the present invention folding constant force loading test device repeatedly
Structure schematic diagram；
Fig. 3 is Fig. 2 A-A to cross section structure diagram；
Fig. 4 is Fig. 2 local B main views schematic cross-sectional view；
Fig. 5 is Fig. 2 local B left views schematic cross-sectional view；
Fig. 6 is the overlooking the structure diagram of the ball joint of the present invention.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
With reference to Figure of description, the present invention will be further described.
The embodiment of crab-bolt long duration load/crack of the present invention as shown in Figure 1 folding constant force loading test device repeatedly
One structural representation, including horizontally disposed top plate 1 and the dynamic plate 2 for being arranged at the lower section of top plate 1, are provided between top plate 1 and dynamic plate 2
Hydraulic jack 3, the lower end of dynamic plate 2 are connected with pressing plate 5 by bushing 4, and the lower section of pressing plate 5 is provided with supporting plate 6, top plate 1, move plate 2,
Pressing plate 5 and supporting plate 6 are parallel to each other.The center of pressing plate 5 and supporting plate 6 has placed thrust axis 7, and the upper end of thrust axis 7 passes through pressure
It is spirally connected after plate 5 with the first fixing nut 8.Pressure spring 9 and pressure sensing are installed on thrust axis 7 between pressing plate 5 and supporting plate 6
Device 10, pressure spring 9 are butterfly spring, and pressure spring 9 is with pressure sensor 10 in distribution up and down.Multiple connecting rods 11 are from bottom to top through branch
It is spirally connected after fagging 6, pressing plate 5, dynamic plate 2 and top plate 1 with the second fixing nut 12, the quantity of connecting rod 11 is four in the embodiment
Individual, connecting rod 11 is spirally connected and formed by upper connecting rod 13 and lower pillar stand 14, and wherein the lower end of upper connecting rod 13 is provided with internal thread hole 15, on this
Connecting rod 13 is spirally connected after passing through dynamic plate 2 and top plate 1 with the second fixing nut 12.Lower pillar stand 14 is the big stairstepping in the small bottom in top
Bar, the outer surface upper end of lower pillar stand 14 are provided with screw thread 16, and lower pillar stand 14 passes through screw thread 16 and the spiral shell of internal thread hole 15 of upper connecting rod 13
It is connected together, supporting plate 6 is arranged on the step surface of lower pillar stand 15.The lower end of each lower pillar stand 14 is bolted with adjusting screw respectively
17, the loading test device is in horizontality for adjusting.
In use, first pass through four adjusting screws 17 is in horizontality by device regulation, then add to hydraulic jack 3
Pressure, hydraulic jack 3 is set to promote dynamic plate 2 to move downward, dynamic plate 2 promotes pressing plate 5 down to move by bushing 4, the compression pressure of pressing plate 5
Spring 9, makes pressure reach pressure sensor 10, and pressure sensor 10 can go out pressure value with real-time display, be measured to test specimen
When have the pressure value of setting, when the pressure value of the micro- super setting of pressure, stop the action of hydraulic jack 3, tighten the first fixation spiral shell
Mother 8, afterwards to hydraulic jack 3 carry out pressure release, now move plate 2 be in free state, thrust caused by pressure spring 9 by pressing plate 5,
First fixing nut 8 is reacted on thrust axis 7, so as to carry out drawing to test specimen.
The embodiment of crab-bolt long duration load/crack of the present invention as shown in Figure 2 folding constant force loading test device repeatedly
Two structural representations, its most of structure is identical with embodiment illustrated in fig. 1 structure, is a difference in that：The lower end connection of thrust axis 7
There is bindiny mechanism 18, bindiny mechanism 18 includes ball joint 19, and ball joint 19 includes hollow connector 20, and connector 20 is
Cross section is the revolving body of c-type, and the outer surface bottom of thrust axis 7 is provided with and the collar flange form fit on the top of connector 20
Annular slot 21, thrust axis 7 are connected by annular slot 21 with the collar flange on the top of connector 20, and the two forms hinge-like
State.Hollow bolt-joint cap 22 is connected with the collar flange of the bottom of connector 20, the inner chamber of bolt-joint cap 22 is provided with internal thread 23, spiral shell
The upper end for connecing cap 22 and fixture 24 is spirally connected fixation, and the lower end of fixture 24 is connected with test specimen.
This is designed into, the loading test device of the structure can be used for using, but in order that thrust axis 7 and ball joint
19 convenient connections, with reference to shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, be provided with the outer surface of the connector 20 of ball joint 19 through it is upper,
The gap 25 of lower end, the cross-sectional diameter of the width of gap 25 and thrust axis 7 match, and are so easy to the lower end of thrust axis 7 can be with
From the inner chamber of the reeve connector 20 of gap 25, the annular slot 21 on thrust axis 7 is placed in the collar flange on the top of connector 20
On.Fixture 24 is stairstepping bar, and the outer surface of upper of fixture 24 is provided with external screw thread 26, and fixture 24 passes through external screw thread 26 and bolt-joint cap
22 internal thread 23 is spirally connected fixation, and the lower end of fixture 24 is provided with the screwed hole 27 for being used for being spirally connected with test specimen.
Device regulation is in horizontality by the embodiment in use, equally first passing through four adjusting screws 17, is given afterwards
Hydraulic jack 3 pressurizes, and makes hydraulic jack 3 promote dynamic plate 2 to move downward, and dynamic plate 2 promotes pressing plate 5 down to move by bushing 4, presses
The compression pressure spring 9 of plate 5, makes pressure reach pressure sensor 10, the real-time display pressure value of pressure sensor 10, works as pressure sensing
During the pressure value for the micro- super setting of pressure that device 10 is shown, stop hydraulic jack 3 and act, the first fixing nut 8 is tightened, afterwards to liquid
Compressing cylinder 3 carries out pressure release, now moves plate 2 and is in free state, thrust caused by pressure spring 9 passes through pressing plate 5, the first fixing nut
8 react on thrust axis 7, and thrust axis 7 carries out drawing, the loading test by ball joint 19, fixture 24 to test specimen
Device overall structure is compact and flexible, easy to install, and the connection between each part is to be detachably connected, and transports beneficial to dismounting and easily
It is defeated, its simple operation, cost economy, and have the real-time display pressure value of pressure sensor 10, it is accurate that it is used.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledges or usual in the art
Technological means.Description and embodiments be considered only as it is exemplary, true scope and spirit of the invention by following right will
Ask and point out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (9)
1. a kind of crab-bolt long duration load/crack folding constant force loading test device repeatedly, it is characterised in that including up and down point
The top plate of cloth and dynamic plate, are provided with hydraulic jack between the top plate and dynamic plate, the dynamic plate lower end connects pressing plate, institute by bushing
State and supporting plate is provided with below pressing plate, the center of the pressing plate and supporting plate has placed thrust axis, and the upper end of the thrust axis passes through
It is connected after pressing plate with the first fixing nut, pressure spring and pressure sensing is installed on the thrust axis between the pressing plate and supporting plate
Device, multiple connecting rods are spirally connected after passing through supporting plate, pressing plate, dynamic plate and top plate with the second fixing nut.
2. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 1
In, the connecting rod is spirally connected by upper connecting rod and lower pillar stand and formed, the upper connecting rod from bottom to top through after dynamic plate and top plate with the
Two fixing nuts are spirally connected.
3. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 2
In the lower pillar stand is the big stairstepping bar in the small bottom in top, and the supporting plate is arranged on the step surface of lower pillar stand.
4. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 3
In the lower end of each lower pillar stand is bolted with adjusting screw respectively.
5. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 1
In the thrust axis lower end is connected with bindiny mechanism, and the bindiny mechanism includes ball joint, and the ball joint upper end is with drawing
Power axle lower end is hinged, and the ball joint lower end is connected with fixture.
6. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 5
In the ball joint includes hollow connector, and the connector is the revolving body that cross section is c-type, the thrust axis
Outer surface bottom is provided with the annular slot with the collar flange form fit on connector top, and the connector passes through annular slot
It is connected with the collar flange on connector top, hollow bolt-joint cap is connected with the collar flange of the connector bottom, it is described
The inner chamber of bolt-joint cap is provided with internal thread, and the bolt-joint cap and the fixture are spirally connected fixation.
7. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 6
In the outer surface of the connector is provided with the gap through its upper and lower end, the cross-sectional diameter of the gap width and thrust axis
Match.
8. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 7
In the fixture is stairstepping bar, and the fixture outer surface of upper is provided with external screw thread, and the fixture passes through external screw thread and bolt-joint cap
Internal thread be spirally connected fixation, the fixture lower end is provided with the screwed hole for being used for being spirally connected with test specimen.
9. folding constant force loading test device, its feature exist repeatedly in crab-bolt long duration load/crack as claimed in claim 1
In the pressure spring is butterfly spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510441214.7A CN105043738B (en) | 2015-07-24 | 2015-07-24 | Crab-bolt long duration load/crack folding constant force loading test device repeatedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510441214.7A CN105043738B (en) | 2015-07-24 | 2015-07-24 | Crab-bolt long duration load/crack folding constant force loading test device repeatedly |
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| Publication Number | Publication Date |
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| CN105043738A CN105043738A (en) | 2015-11-11 |
| CN105043738B true CN105043738B (en) | 2018-02-13 |
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| CN109060544A (en) * | 2018-07-22 | 2018-12-21 | 李�瑞 | A kind of anti-load damage test device of highway pavement |
| CN108956341A (en) * | 2018-08-14 | 2018-12-07 | 卢锦福 | A kind of building material test specimen crack folding control device repeatedly |
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| CN102175411A (en) * | 2011-03-07 | 2011-09-07 | 哈尔滨工业大学 | Recyclable complete device for test on bending hysteresis of structural pillar under action of long-time load |
| CN102998174A (en) * | 2011-09-09 | 2013-03-27 | 中交四航工程研究院有限公司 | Long-term loading apparatus system for concrete sample durability tests |
| CN203941064U (en) * | 2014-05-29 | 2014-11-12 | 华中科技大学 | A kind of sustainable rear anchor piece testing apparatus that applies tension load |
| CN104390846A (en) * | 2014-11-25 | 2015-03-04 | 广东省长大公路工程有限公司 | Anchor bolt drawing instrument connector |
| CN204882047U (en) * | 2015-07-24 | 2015-12-16 | 中国建材检验认证集团股份有限公司 | Open and shut invariable pulling force load test device repeatedly in long -term load / crack of crab -bolt |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3606086B2 (en) * | 1999-01-14 | 2005-01-05 | 株式会社大林組 | Strength estimation method for structural concrete |
| KR100970205B1 (en) * | 2008-10-28 | 2010-07-16 | 한국기계연구원 | A Load-testing Apparatus for Connecting-Pin |
-
2015
- 2015-07-24 CN CN201510441214.7A patent/CN105043738B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175411A (en) * | 2011-03-07 | 2011-09-07 | 哈尔滨工业大学 | Recyclable complete device for test on bending hysteresis of structural pillar under action of long-time load |
| CN102998174A (en) * | 2011-09-09 | 2013-03-27 | 中交四航工程研究院有限公司 | Long-term loading apparatus system for concrete sample durability tests |
| CN203941064U (en) * | 2014-05-29 | 2014-11-12 | 华中科技大学 | A kind of sustainable rear anchor piece testing apparatus that applies tension load |
| CN104390846A (en) * | 2014-11-25 | 2015-03-04 | 广东省长大公路工程有限公司 | Anchor bolt drawing instrument connector |
| CN204882047U (en) * | 2015-07-24 | 2015-12-16 | 中国建材检验认证集团股份有限公司 | Open and shut invariable pulling force load test device repeatedly in long -term load / crack of crab -bolt |
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| CN105043738A (en) | 2015-11-11 |
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