CN203941064U - A kind of sustainable rear anchor piece testing apparatus that applies tension load - Google Patents

A kind of sustainable rear anchor piece testing apparatus that applies tension load Download PDF

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Publication number
CN203941064U
CN203941064U CN201420281922.XU CN201420281922U CN203941064U CN 203941064 U CN203941064 U CN 203941064U CN 201420281922 U CN201420281922 U CN 201420281922U CN 203941064 U CN203941064 U CN 203941064U
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CN
China
Prior art keywords
support ring
anchor piece
rear anchor
testing apparatus
pull bar
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Expired - Lifetime
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CN201420281922.XU
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Chinese (zh)
Inventor
赵挺生
胡文华
付国祥
宋九选
杨西海
吴福泉
刘超群
彭延洋
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Abstract

The utility model discloses a kind of sustainable rear anchor piece testing apparatus that applies tension load, comprise bracing frame, pull bar and double threaded screw, wherein bracing frame has upper support ring, lower support ring and is fixedly connected on a plurality of depression bars between upper and lower support ring outer rim, and the intermediate throughholes of upper and lower support ring and rear anchor piece align; Pull bar is vertically through the intermediate throughholes of upper support ring, and its lower end is connected with testing sensor and rear anchor piece in turn; Double threaded screw is linked in the top of pull bar and at screw rod two, is respectively installed with the long nut that is positive and negative silk, then by set nut and packing ring fixed in position on the upper support ring of bracing frame.By the utility model, can effectively avoid the effect of contraction of loading unit to rear anchoring base material, can keep by the threaded engagement between double threaded screw and long nut in addition continuing and stablizing of load, thereby realize the long duration load test to crab-bolt or bar planting.

Description

A kind of sustainable rear anchor piece testing apparatus that applies tension load
Technical field
The utility model belongs to construction implement technical field, more specifically, relates to a kind of sustainable rear anchor piece testing apparatus that applies tension load.
Background technology
Since nearly half a century, engineering construction is from the large-scale newly-built stage of developing into the newly-built emphasis maintenance and renovation of part; Universal along with the increasing of carrying out of making of old housing reform, structural fortification, construction and decoration, the advantages such as rear anchorage technology is high with its easy construction, performance reliability, flexible arrangement are widely used, and become indispensable a kind of new technique, also progressively extend in new building engineering, its anchoring base material is also extended to the various building boards such as porous brick, fiberboard and hollow building materials by concrete, become a kind of indispensable new technique.
Compare with engineering application widely, China but relatively lags behind about standard and the industry standard of rear anchoring aspect at present, also lacks in addition relevant testing standard and proving installation.At present in Shang He laboratory, market more existing detect the equipment of anchor drawing load-bearing capacitys, its mainly construct and principle of work as shown in fig. 1, it is to take the rear anchoring base material 3 of concrete and so on ' be bearing, by hydraulic cylinder 2 ' and pull bar 1 ' to rear anchor piece 6 ' directly apply pulling capacity, thus the load-bearing capacity of check anchoring piece.Yet, further test shows, there is following defect or deficiency in this class testing device of prior art: first, because anchoring base material after this drawing instrument is bearing, and cylinder diameter is less, oil cylinder is when applying pulling capacity, base material is exerted pressure, form effect of contraction, improved to a certain extent the ability of anchoring piece anti-pulling, be not inconsistent with actual conditions, and run counter to the requirement of anchorage technology rules > > (JGJ145-2013) to crab-bolt spacing and crab-bolt and concrete edge distance after < < xoncrete structure, secondly, mostly the load that this kind of pilot system applies is of short duration, is merely able to test the short-term load-bearing capacity of anchoring piece, and the long-term tensile capacity that continues loading detection anchoring piece cannot be provided, and due to the limitation of electric power safeguard, oil pressure guarantee etc., be difficult to carry out long-term continuous loading test.Therefore, in relevant industries, need badly and develop more perfect testing apparatus, so that the ability that provides long-time bearing ability to detect for rear anchoring crab-bolt or bar planting.
Utility model content
Above defect or Improvement requirement for prior art, the purpose of this utility model is to provide a kind of sustainable rear anchor piece testing apparatus that applies tension load, wherein by its key component is improved as structure and the set-up mode thereof of loading unit, bracing frame etc., mutually should be able to apply sustainably tension load to realize load testing to various rear anchor pieces, possess the features such as compact conformation, convenient operation and test be accurate simultaneously.
For achieving the above object, the utility model provides a kind of sustainable rear anchor piece testing apparatus that applies tension load, and this testing apparatus comprises bracing frame, pull bar and double threaded screw, it is characterized in that:
Support frame as described above comprises upper support ring, lower support ring and is fixedly connected on a plurality of depression bars between upper and lower support ring outer rim, and the intermediate throughholes of upper and lower support ring aligns with the rear anchor piece as tested object;
Described pull bar is vertically through the intermediate throughholes of upper support ring, and its lower end keeps being connected with one end of testing sensor by sensor X-over, continues to keep being connected by sensor X-over and rear anchor piece in other one end of this testing sensor;
Described double threaded screw is linked in the top of described pull bar and at screw rod two, is respectively installed with the long nut that is positive and negative silk, then by set nut and packing ring fixed in position on the upper support ring of support frame as described above.
As further preferably, described double threaded screw and the size that is set with two long nuts on it design according to the required load applying.
As further preferably, support frame as described above comprises the lower support ring that upper support ring, diameter that diameter is relatively little are relatively large and is fixedly connected on four depression bars between upper and lower support ring outer rim, and these four depression bar equi-spaced apart settings each other.
As further preferably, the bottom of support frame as described above can also be horizontally disposed with support plate, and on this support plate, clock gauge is installed.
As further preferably, this testing apparatus can also comprise sinusoidal frequency meter, and described sinusoidal frequency meter and described testing sensor are electrically connected, thus by the detection of loading frequency being measured to the tension load of rear anchor piece.
In general, the above technical scheme of conceiving by the utility model, compared with prior art, mainly possesses following technological merit:
1, by the structure of loading unit and set-up mode thereof are improved, in use can be by two long nuts that are positive and negative silk of the artificial twisting of spanner, from the middle part load application of double threaded screw and pass to pull bar, thereby realize the sustainability tension load to the rear anchor piece of anchor pole or bar planting and so on;
2, by the structure to bracing frame, design, test shows effectively to avoid the effect of contraction of charger to rear anchoring base material, realizes the stable support to loading element simultaneously;
3, according to testing apparatus of the present utility model, adopt mechanical load mode, after loaded, can keep by the threaded engagement between double threaded screw and long nut load to continue and stablize, thereby realized the long duration load test to rear anchor piece.
Accompanying drawing explanation
Fig. 1 dials the primary structure schematic diagram of device for detection of drawing of rear anchor piece in prior art;
Fig. 2 is according to the structural representation of the rear anchor piece testing apparatus of the utility model preferred embodiment;
Fig. 3 is the structural perspective of bracing frame shown in Fig. 2;
Fig. 4 is the structural representation of double threaded screw shown in Fig. 2, and wherein the left side is set with the long nut of positive silk, and the right is set with the long nut of anti-silk;
Fig. 5 is the structural representation of pull bar shown in Fig. 2;
Fig. 6 is the structural representation that is arranged on the support plate of bracing frame bottom in Fig. 2;
In institute's drawings attached, identical Reference numeral is used for representing identical element or structure, wherein:
1-pull bar 2-set nut 3-packing ring 4-double threaded screw 5-long nut 6-upper support ring 7-lower support ring 8-depression bar 9-testing sensor 10-sensor X-over 11-clock gauge 12-support plate 13-rear anchor piece 1 '-pull bar 2 '-hydraulic cylinder 3 '-rear anchoring base material 6 '-rear anchor piece
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.In addition,, in each embodiment of described the present invention, involved technical characterictic just can not combine mutually as long as do not form each other conflict.
Fig. 2 is according to the structural representation of the rear anchor piece testing apparatus of the utility model preferred embodiment.As shown in Figure 2, this rear anchor piece testing apparatus mainly comprises bracing frame, pull bar 1 and double threaded screw 4 etc., consider that the ripple instrument that draws of the prior art is difficult to realize the problem of rear anchoring rod or bar planting being carried out to continuation tension load test, has adopted following preferred embodiment in the present invention.
Particularly, bracing frame comprises upper support ring 6, lower support ring 7 and is fixedly connected on a plurality of depression bars 8 between upper and lower support ring 6,7 outer rims, and the intermediate throughholes of upper and lower support ring aligns the back gauge requirement of minimum while guaranteeing thus rear anchor piece tension with the rear anchor piece 13 (being anchor pole in the present embodiment) as tested object.In addition, as shown in Figure 3, according to a preferred implementation of the present utility model, it is relatively little that the upper support ring of this bracing frame is set to diameter, it is relatively large that lower support ring is set to diameter, and four depression bars are fixedly connected on to equi-spaced apart between upper and lower support ring outer rim each other, for loading unit etc. provides reliable and stable support, also effectively avoided the effect of contraction of loading unit to rear anchoring base material thus simultaneously.
Pull bar 1 vertically passes the intermediate throughholes of upper support ring 6, its lower end keeps being connected with one end of testing sensor 9 by sensor X-over 10, continues to keep being connected with rear anchor piece 13 by another same sensor X-over 10 in other one end of this testing sensor 9.Concrete size and the specification of pull bar can be adjusted according to actual needs, as shown in Figure 5, have shown that length is the concrete specification that 500mm, radius are 14mm.
In addition, as another key improvement of the present utility model, double threaded screw 4 is linked in the top of pull bar 1 and at two up and down of screw rod, is respectively installed with the long nut 5 that is positive and negative silk, then passes through set nut 3 and packing ring 2 fixed in position on the upper support ring 6 of support frame as described above.In this way, in use, first can be fixed on bracing frame by pull bar and the set nut through double threaded screw, loading reaches after pre-constant load, can also be by two long nuts that are positive and negative silk of the artificial twisting of spanner, the threaded engagement and the bracing frame that rely on double threaded screw and two to be between the long nut of positive and negative silk keep stable load, like this in to the middle load application of double threaded screw 4, by X-over and sensor cylinder lever connecting rod and rear anchor piece, thus this load is connected with sensor and passes to rear anchor piece 13 via X-over, thereby mechanically realize, rear anchor piece 13 is realized and being continued and stable tension load, in addition, because the top of the double threaded screw nut 2 that is locked is pressed on the surface of upper support ring, so not only can conveniently to double threaded screw, apply stable load, but also effectively avoid the effect of contraction to rear anchoring base material, further improve the accuracy of tension load test.The concrete dimensions of the double threaded screw adopting in this preferred embodiment specifically can be as shown in Figure 4.
According to a preferred implementation of the present utility model, the bottom of support frame as described above can also be horizontally disposed with support plate 12, and on this support plate 12, clock gauge 11 is installed.In addition, according to another preferred implementation of the present utility model, this testing apparatus can also comprise sinusoidal frequency meter, and this sinusoidal frequency meter and described testing sensor 9 are electrically connected, by the detection of loading frequency being measured to the tension load of rear anchor piece, improve the simplicity of test operation thus.
To specifically describe according to the operating process of rear anchor piece testing apparatus of the present utility model below.Suppose that tested object is the high strength chemical drift bolt RM12 of certain brand, can carry out executable operations according to following steps:
First, according to the installation steps of chemical anchor bolts, hole successively, clear hole, put sebific duct, bury screw rod and standing; After colloid solidifies, support plate and sensor X-over are installed; Bracing frame is positioned on base material, and crab-bolt is aimed at Bing Shiqi center; The loading unit consisting of the positive and negative filament length nut of double threaded screw is positioned on bracing frame, and then the center through loading unit and bracing frame by pull bar, is connected with testing sensor; Packing ring and nut are installed, then by twisting long nut load application in the middle part of double threaded screw, thereby anchor pole are applied and continued and stable load.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (3)

1. a sustainable rear anchor piece testing apparatus that applies tension load, this testing apparatus comprises bracing frame, pull bar (1) and double threaded screw (4), it is characterized in that:
Support frame as described above comprises upper support ring (6), lower support ring (7) and is fixedly connected on a plurality of depression bars (8) between upper and lower support ring outer rim, and the intermediate throughholes of upper and lower support ring aligns with the rear anchor piece (13) as tested object;
Described pull bar (1) vertically passes the intermediate throughholes of upper support ring (6), its lower end keeps being connected with one end of testing sensor (9) by sensor X-over, continues to keep being connected by sensor X-over and rear anchor piece (13) in other one end of this testing sensor (9);
Described double threaded screw (4) is linked in the top of described pull bar (1) and at screw rod two, is respectively installed with the long nut that is positive and negative silk, then passes through set nut (2) and packing ring (3) fixed in position on the upper support ring (6) of support frame as described above.
2. rear anchor piece testing apparatus as claimed in claim 1, is characterized in that, the bottom of support frame as described above has also been horizontally disposed with support plate (12), and clock gauge (11) is installed on this support plate.
3. rear anchor piece testing apparatus as claimed in claim 1, it is characterized in that, this testing apparatus also comprises sinusoidal frequency meter, and this sinusoidal frequency meter and described testing sensor (9) are electrically connected, thus by the detection of loading frequency being measured to the tension load of rear anchor piece.
CN201420281922.XU 2014-05-29 2014-05-29 A kind of sustainable rear anchor piece testing apparatus that applies tension load Expired - Lifetime CN203941064U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105043738A (en) * 2015-07-24 2015-11-11 中国建材检验认证集团股份有限公司 Anchor long-term load/crack repeated opening and closing constant tension load test device
CN110389074A (en) * 2019-07-23 2019-10-29 南京工业大学 Anchoring part on-site bearing capacity testing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105043738A (en) * 2015-07-24 2015-11-11 中国建材检验认证集团股份有限公司 Anchor long-term load/crack repeated opening and closing constant tension load test device
CN105043738B (en) * 2015-07-24 2018-02-13 中国建材检验认证集团股份有限公司 Crab-bolt long duration load/crack folding constant force loading test device repeatedly
CN110389074A (en) * 2019-07-23 2019-10-29 南京工业大学 Anchoring part on-site bearing capacity testing device

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Granted publication date: 20141112

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