CN201223881Y - Apparatus for measuring tensioning force of fine rolling screw-thread steel - Google Patents

Apparatus for measuring tensioning force of fine rolling screw-thread steel Download PDF

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Publication number
CN201223881Y
CN201223881Y CNU2008200496967U CN200820049696U CN201223881Y CN 201223881 Y CN201223881 Y CN 201223881Y CN U2008200496967 U CNU2008200496967 U CN U2008200496967U CN 200820049696 U CN200820049696 U CN 200820049696U CN 201223881 Y CN201223881 Y CN 201223881Y
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China
Prior art keywords
twisted steel
fining twisted
connector
resistance strain
sleeve
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Expired - Fee Related
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CNU2008200496967U
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Chinese (zh)
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程晔
黄成造
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Individual
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Individual
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Abstract

A measurement device for measuring the tension of finish-rolling twisted steel is characterized in that the device comprises a sleeve-type finish-rolling twisted steel connector (2) with internal thread, and a resistance strain gauge (5); and four resistance strain pieces (3) are evenly distributed and stuck along the same circumference on the external surface in the middle of the sleeve of the finish-rolling twisted steel connector, so as to form a full-bridge Wheatstone circuit which is then connected into the resistance strain gauge. The utility model makes full use of the existing mature reinforced steel bar connecting technology which has high anchoring efficiency; the utility model can accurately measure the tension of finish-rolling twisted steel and can be easily operated, which can conveniently monitor the working conditions of multiple reinforced steel bars at the same time.

Description

A kind of measurement mechanism of fining twisted steel stretching force
Technical field
The utility model relates to a kind of continuous beam and large-scale frame structure that is used in hydraulic engineering, industry and the civil buildings, highway, railway be big-and-middle strides the line tension-force measuring device of the fining twisted steel in engineering such as bridge and the construction implement, can be widely used in the field of using fining twisted steel on engineering such as bridge, water conservancy, side slope protection, building and the construction equipment.
Background technology
In the place of using fining twisted steel, often need to know the real bearing state of fining twisted steel, conventional method is that the method for utilizing the steel elastic modelling quantity to calculate elongation obtains its stretching force, and the method for measuring at fining twisted steel end setting pressure sensor is also arranged.The shortcoming of first kind of above-mentioned way is that error is big, can't accurate Calculation and the actual elongation of measurement.Second method can obtain the stretching force of fining twisted steel, but increased the length of anchored end, increased installation cost, when fining twisted steel is intensive, it is very high that degree of difficulty is installed, and it can only obtain the stretching force of an end, can not get the stretching force at fining twisted steel middle part, and this often seems extremely important when fining twisted steel is longer.
The utility model content
Technical problem to be solved in the utility model, just provide a kind of simple in structure, cost is low, safe and reliable, fining twisted steel line tension-force measuring device that measuring accuracy is high, is specially adapted to measure single or the stretching force of many fining twisted steels in work progress.
The utility model technical solution problem can realize by following technical solution: a kind of measurement mechanism of fining twisted steel stretching force, it is characterized in that: comprise telescopic fining twisted steel connector and resistance strain gauge with internal thread, be pasted with at least one sheet resistance foil gauge on the outer surface in the middle of the described fining twisted steel connector sleeve, resistance strain gauge is inserted at the foil gauge two ends.
During measurement, two fining twisted steels are screwed into from the two ends of connector sleeve respectively, and the part that two fining twisted steels stretch into connector all arrives at the position of the foil gauge that is installed on the connector sleeve outer surface and uses connector fastening good, outside stretch-draw two fining twisted steels from the other end of two fining twisted steels, foil gauge is responded to the level of stretch of fining twisted steel, and is shown the stretching force of fining twisted steel by the resistance strain gauge that is connected with foil gauge.
On above-mentioned basis, the utility model can be done following improvement:
The outer wall of described connector has the thin groove that adapts with foil gauge, and foil gauge is pasted in the thin groove.
Described foil gauge is a right-angle type paper tinsel formula foil gauge.
Described foil gauge is four right-angle type paper tinsel formula foil gauges, inserts resistance strain gauge along same circumference uniform distribution and after forming full-bridge Hui Sideng circuit.
Described foil gauge is connected by the core data wire with resistance strain gauge.
The utility model also comprises an outer sleeve, and described outer sleeve fixedly is placed in the outer and covering protection foil gauge of connector, and outer sleeve is fixedly connected on the connector by screw.
With respect to prior art, the utlity model has following advantage:
(1) make full use of existing ripe fining twisted steel interconnection technique, this connected mode anchoring efficient height is used widely in engineering.Compare with the prior art adopts pressure sensor, the fining twisted steel stretching force that the utility model is measured is more accurate, and it is convenient to operate, and conveniently monitors many fining twisted steel working conditions simultaneously.
(2) foil gauge of this device has thicker outer sleeve as protective sleeve, can avoid causing in work progress the damage to foil gauge, and can avoid sun direct projection influence.So just make this device can be used for fining twisted steel prestressing force monitoring to whole construction course.
(3) the fining twisted steel pulling force is born by the annulus of connector middle part regular shape fully, be subjected to force mode intuitively simple, thereby can guarantee the accuracy of measured data.
Description of drawings
The present invention is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing is a structure cross-sectional schematic of the present utility model.
Among the figure: 1-fining twisted steel, 2-fining twisted steel connector, 3-right-angle type paper tinsel formula foil gauge, 4-outer sleeve, 5-resistance strain gauge.
The specific embodiment
The measurement mechanism embodiment of fining twisted steel stretching force as shown in drawings, comprise telescopic fining twisted steel connector 2 and resistance strain gauge 5 with internal thread, on the outer surface in the middle of the sleeve of fining twisted steel connector 2, evenly have four thin grooves along same circumference, sticking respectively card inserts resistance strain gauge 5 by the core data wire after having 3, four right-angle type paper tinsels of right-angle type paper tinsel formula foil gauge formula foil gauge 3 to form full-bridge Hui Sideng circuit in each thin groove.
Fining twisted steel to be measured is divided into two sections, and the fining twisted steel connector sleeve that an end of a fining twisted steel is screwed in this measurement mechanism screws in another root fining twisted steel again to the middle part then, is screwed into the middle part of sleeve equally.Connect this device and deformeter with the four-core data wire, open deformeter, with the video data zero clearing, stretch-draw fining twisted steel, deformeter can show the stretching force size that fining twisted steel is suffered.
During measurement, two finish rolling screw thread fining twisted steels 1 are screwed into from the two ends of connector 2 respectively, and the part that two finish rolling screw thread fining twisted steels 1 stretch into connector 2 all arrives at the position of the right-angle type paper tinsel formula foil gauge 3 that is installed on connector 2 outer walls, outside stretch-draw two fining twisted steels 1, right-angle type paper tinsel formula foil gauge 3 is responded to the level of stretch of finish rolling screw thread fining twisted steels 1, and is shown the stretching force of finish rolling screw thread fining twisted steels 1 by the resistance strain gauge 5 that is connected with right-angle type paper tinsel formula foil gauge 3.Because the pulling force of fining twisted steel bears by the annulus of connector middle part regular shape fully, is subjected to force mode intuitively simple, thereby can guarantees the accuracy of measured data.Many fining twisted steel collaborative work operations are identical, with the multichannel resistance strain gauge this measurement mechanism on each root connected then, so just can measure the stressing conditions of many fining twisted steels with a resistance strain gauge.If sample automatically with computer, then all channel datas all will be shown in real time, thereby can monitor the working condition of the system of fining twisted steel composition in real time.
And, can increase or reduce the quantity of angie type paper tinsel formula foil gauge 3 according to actual needs, to obtain higher efficient according to the requirement of different application occasion.
For avoiding right-angle type paper tinsel formula foil gauge 3 to avoid in work progress, suffering damage, or influenced by sun direct projection, can outside connector 4, be fixed with an outer sleeve 4, cover foil gauges 3 by outer sleeve 4 by screw; Make this device can be used for fining twisted steel prestressing force monitoring to whole construction course.。
The utility model makes full use of existing ripe fining twisted steel interconnection technique, and this connected mode anchoring efficient height is used widely in engineering.Compare with the prior art adopts pressure sensor, the fining twisted steel stretching force that the utility model is measured is more accurate, and it is convenient to operate, and conveniently monitors many fining twisted steel working conditions simultaneously.
The utility model can satisfy continuous beam and the large-scale frame structure in large hydraulic engineering, industry and the civil buildings, and highway, railway be big-and-middle strides single or many application scenarios such as fining twisted steel pull bar stretch-draw force measurement on engineerings such as bridge, nuclear power station and earth anchor and the heavy mechanical equipment.
Fining twisted steel tensile strength is big, be out of shape little, at engineering machinery or construction equipment (as hanging indigo plant, mobile mould valency suspension rod/bracket pull bar, suspension bracket) often adopt it to bear rod member as crucial pulling force in, if destroying appears in this rod member, its consequence is very serious even hardly imaginable.Therefore in work progress, its stress state is monitored very necessary.
When many fining twisted steel collaborative works, a certain of stretch-draw will will produce very big influence to the stretching force of other fining twisted steels, often because constructing operation reason (stretch-draw priority etc.), make that the good fining twisted steel of stretch-draw originally is stressed to change even fully no longer stressed, this is abnormally dangerous in structure.Therefore monitor the size of each root fining twisted steel stretching force in real time, mend stretch-draw several times or adjust the load distribution extremely important according to size of data.Therefore adopt this measurement mechanism can make the workmen grasp the size of actual single or many fining twisted steel stretching forces fully, accomplish to know what's what, thereby avoid taking place security incident.
The claimed scope of the utility model is not limited to the scope that embodiment expresses; everyly on the fining twisted steel connector, slot or directly paste foil gauge according to the utility model; foil gauge is subjected to outer sleeve protection; fining twisted steel divides two sections connections; carry out the conversion that technical scheme is equal to by the connector connection, all belong to the scope of the utility model protection.

Claims (8)

1, the measurement mechanism of a kind of fining twisted steel (1) stretching force, it is characterized in that: comprise telescopic fining twisted steel connector (2) and resistance strain gauge (5) with internal thread, be pasted with at least one sheet resistance foil gauge (3) on the outer surface in the middle of the sleeve of described fining twisted steel connector, resistance strain gauge is inserted at the foil gauge two ends.
2, the measurement mechanism of fining twisted steel stretching force according to claim 1 is characterized in that: described resistance strain gage (3) is a right-angle type paper tinsel formula foil gauge.
3, the measurement mechanism of fining twisted steel stretching force according to claim 1 and 2 is characterized in that:
Described resistance strain gage (3) is four, inserts resistance strain gauge along same circumference uniform distribution and after forming full-bridge Hui Sideng circuit.
4, the measurement mechanism of fining twisted steel stretching force according to claim 3 is characterized in that: described foil gauge location for paste has the thin groove that adapts with foil gauge.
5, the measurement mechanism of fining twisted steel stretching force according to claim 1 and 2 is characterized in that:
Described foil gauge location for paste has the thin groove that adapts with foil gauge.
6, the measurement mechanism of fining twisted steel stretching force according to claim 1 and 2 is characterized in that:
One outer sleeve (4) fixedly is placed in covering protection resistance strain gage (3) on the outer surface in the middle of the sleeve of fining twisted steel connector, and outer sleeve is fixedly connected on the connector by screw.
7, the measurement mechanism of fining twisted steel stretching force according to claim 4; it is characterized in that: an outer sleeve (4) fixedly is placed in covering protection resistance strain gage (3) on the outer surface in the middle of the sleeve of fining twisted steel connector, and outer sleeve is fixedly connected on the connector by screw.
8, the measurement mechanism of fining twisted steel stretching force according to claim 5; it is characterized in that: an outer sleeve (4) fixedly is placed in covering protection resistance strain gage (3) on the outer surface in the middle of the sleeve of fining twisted steel connector, and outer sleeve is fixedly connected on the connector by screw.
CNU2008200496967U 2008-06-25 2008-06-25 Apparatus for measuring tensioning force of fine rolling screw-thread steel Expired - Fee Related CN201223881Y (en)

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Application Number Priority Date Filing Date Title
CNU2008200496967U CN201223881Y (en) 2008-06-25 2008-06-25 Apparatus for measuring tensioning force of fine rolling screw-thread steel

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Application Number Priority Date Filing Date Title
CNU2008200496967U CN201223881Y (en) 2008-06-25 2008-06-25 Apparatus for measuring tensioning force of fine rolling screw-thread steel

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104746800A (en) * 2015-03-26 2015-07-01 中铁第五勘察设计院集团有限公司 Finish-rolling deformed bar and pin connector with force measurement device
CN104895334A (en) * 2015-06-15 2015-09-09 哈尔滨工业大学 Real-time pre-stress monitoring type clip anchoring tool and anchoring tool tension method thereof
CN105606710A (en) * 2015-12-25 2016-05-25 上海交通大学 Portable sensor clamp applied to smart reinforcing steel bars
CN105758351A (en) * 2016-03-02 2016-07-13 张远程 Length measurement device and method based on force-electricity conversion sensor
CN107237404A (en) * 2017-08-03 2017-10-10 中国十九冶集团有限公司 A kind of overhanging steel structure and its installation method with reinforcing pull rod
CN111707561A (en) * 2020-06-24 2020-09-25 扬州大学 Concrete flexural member load holding device in erosion service environment and working process thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104746800A (en) * 2015-03-26 2015-07-01 中铁第五勘察设计院集团有限公司 Finish-rolling deformed bar and pin connector with force measurement device
CN104895334A (en) * 2015-06-15 2015-09-09 哈尔滨工业大学 Real-time pre-stress monitoring type clip anchoring tool and anchoring tool tension method thereof
CN105606710A (en) * 2015-12-25 2016-05-25 上海交通大学 Portable sensor clamp applied to smart reinforcing steel bars
CN105606710B (en) * 2015-12-25 2018-12-18 上海交通大学 Portable sensor fixture applied to intelligent reinforcing bar
CN105758351A (en) * 2016-03-02 2016-07-13 张远程 Length measurement device and method based on force-electricity conversion sensor
CN105758351B (en) * 2016-03-02 2018-11-06 张远程 Length measuring instrument and measurement method based on power electricity conversion sensor
CN107237404A (en) * 2017-08-03 2017-10-10 中国十九冶集团有限公司 A kind of overhanging steel structure and its installation method with reinforcing pull rod
CN111707561A (en) * 2020-06-24 2020-09-25 扬州大学 Concrete flexural member load holding device in erosion service environment and working process thereof

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Granted publication date: 20090422

Termination date: 20100625