CN103698074A - Online monitoring method for residual pretightening force of large-sized prestressed steel wire winding frame - Google Patents
Online monitoring method for residual pretightening force of large-sized prestressed steel wire winding frame Download PDFInfo
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- CN103698074A CN103698074A CN201310734765.3A CN201310734765A CN103698074A CN 103698074 A CN103698074 A CN 103698074A CN 201310734765 A CN201310734765 A CN 201310734765A CN 103698074 A CN103698074 A CN 103698074A
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Abstract
The invention relates to an online monitoring method for residual pretightening force, in particular to an online monitoring method for residual pretightening force of a large-sized prestressed steel wire winding frame. The online monitoring method comprises the steps of determining a measurement area of the frame and treating the surface of the measurement area; before a steel wire is wound, welding a weldable strain gage on the frame; connecting a data line of the strain gage with a strain data acquisition instrument and connecting the strain data acquisition instrument with a computer by using a data line; acquiring and storing initial data of the strain gage; during working after the steel wire is wound on the frame, acquiring the strain data of the strain gage again, making a comparison between the strain data which are acquired at two times to obtain the strain of the frame, and calculating the residual pretightening force according to the strain. The online monitoring method for the residual pretightening force of the large-sized prestressed steel wire winding frame solves the problem that the residual pretightening force of the large-sized prestressed steel wire winding frame during working cannot be quantitatively monitored.
Description
Technical field
The present invention relates to strain measurement method, specifically the on-line monitoring method of the remaining pretightning force of a kind of large-sized prestress steel wire wrapping machine frame.
Background technology
At present, measure large-sized prestress steel wire wrapping machine frame strain by using paster method, at the strain data that is needing the position subsides foil gauge of monitor strain, the data that measure by foil gauge to obtain frame, carry out the strain of computer rack.The classic method of pasting foil gauge be with glue by strain gauge adhesion in frame, the engineering difficulty of pasting due to glue is not easy greatly to grasp, and will there is creep in glue after a while, therefore the serviceable life of glue stickup foil gauge is shorter, only be practically applicable to the detection of frame strain in steel wire winding process, and can not realize the on-line monitoring that compressor wire is wound around remaining pretightning force in the frame course of work.
Summary of the invention
The present invention is intended to solve the problem that above-mentioned adhesive type foil gauge measuring method exists, and a kind of weldable foil gauge pasting method is provided, and reduces foil gauge paster difficulty, and realizes the on-line monitoring that compressor wire is wound around remaining pretightning force in the frame course of work.
The technical scheme that the present invention solves described problem employing is: the on-line monitoring method of the remaining pretightning force of a kind of large-sized prestress steel wire wrapping machine frame, carries out in the steps below:
A, determine strain measurement point, surface treatment is carried out in the region that measure, make it meet the welding requirements of foil gauge;
B, determine the patch location of foil gauge, by strain gauge adhesion in frame;
C, employing wire connect foil gauge lead-in wire and strain data Acquisition Instrument, and data collecting instrument interface and computer interface are connected with data line;
D, before frame is carried out steel wire winding, data collecting instrument energising, opens data acquisition software, gathers the current strain data of foil gauge and preserves, as primary data;
After e, frame strain change, according to step c, to steps d, again obtain the strain data of the foil gauge of frame;
The strain data that f, comparison measure for twice, obtains the dependent variable of frame, thereby calculates the remaining pretightning force of frame.
Described foil gauge is weldable foil gauge.
Described strain gauge adhesion mode is for adopting spot welder dedicated welding manner.
After described foil gauge is welded in frame, because can not there is glue creep, do not cause foil gauge to lose efficacy, thus can use for a long time, thus on-line monitoring that can frame.
Compared with prior art, the outstanding effect of the present invention is: solved the problems such as the paster difficulty existing in traditional adhesive type strain gauge method monitor strain is large, Use Limitation is short, realized the on-line monitoring of remaining pretightning force in the compressor wire winding frame course of work.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention measuring method schematic diagram;
In figure: frame 1, foil gauge is measured sheet 2, foil gauge compensating plate 3, measured zone 4, strain data Acquisition Instrument 5, data line 6, computing machine 7.
Embodiment
Below in conjunction with embodiment, further set forth the present invention, object is only to understand better content of the present invention; Therefore, the cited case does not limit the scope of the invention.
Referring to Fig. 1, the on-line monitoring method of the remaining pretightning force of a kind of large-sized prestress steel wire wrapping machine frame, carries out according to the following steps:
The first step, first carries out surface treatment to measured zone 4, makes this region reach desirable paster welding effect;
Second step, the measuring method of employing is semibridge system mensuration, foil gauge present position is as shown in Figure 1.According to the concrete welding process flow of foil gauge, with spot welder, foil gauge measurement sheet 1, foil gauge compensating plate 2 are welded in frame;
The 3rd step, adopts semibridge system mensuration that the interface of foil gauge 1,2 and strain data Acquisition Instrument 5 is connected with wire 6, and strain data Acquisition Instrument 5 is connected with computing machine 7 use data lines 6;
The 4th step, before frame is carried out steel wire winding, data collecting instrument 5 energisings, open data acquisition software at computing machine 7, gather the current strain data of foil gauge and preserve, as primary data;
The 5th step, frame strain is carried out according to the 3rd to the 4th step after changing, and again obtains the current strain data of foil gauge;
The 6th step, the strain data relatively measuring for twice, obtains the dependent variable of frame, thereby calculates the remaining pretightning force of frame;
The 7th step, as need be again measured time, carries out according to the 4th to the 6th step.
Claims (4)
1. an on-line monitoring method for the remaining pretightning force of large-sized prestress steel wire wrapping machine frame, carries out in the steps below:
A, determine strain measurement point, surface treatment is carried out in the region that measure, make it meet the welding requirements of foil gauge;
B, determine the patch location of foil gauge, by strain gauge adhesion in frame;
C, employing wire connect foil gauge lead-in wire and strain data Acquisition Instrument, and data collecting instrument interface and computer interface are connected with data line;
D, before frame is carried out steel wire winding, data collecting instrument energising, opens data acquisition software, gathers the current strain data of foil gauge and preserves, as primary data;
After e, frame strain change, according to step c, to steps d, again obtain the strain data of the foil gauge of frame;
The strain data that f, comparison measure for twice, obtains the dependent variable of frame, thereby calculates the remaining pretightning force of frame.
2. the on-line monitoring method for the remaining pretightning force of large-sized prestress steel wire wrapping machine frame as claimed in claim 1, is characterized in that, described foil gauge is weldable foil gauge.
3. the on-line monitoring method for the remaining pretightning force of large-sized prestress steel wire wrapping machine frame as claimed in claim 1, is characterized in that, described strain gauge adhesion mode is for adopting spot welder dedicated welding manner.
4. the on-line monitoring method for the remaining pretightning force of large-sized prestress steel wire wrapping machine frame as claimed in claim 1, it is characterized in that, after described foil gauge is welded in frame, because can not there is glue creep, do not cause foil gauge to lose efficacy, so can use for a long time, thereby on-line monitoring that can frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734765.3A CN103698074A (en) | 2013-12-27 | 2013-12-27 | Online monitoring method for residual pretightening force of large-sized prestressed steel wire winding frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734765.3A CN103698074A (en) | 2013-12-27 | 2013-12-27 | Online monitoring method for residual pretightening force of large-sized prestressed steel wire winding frame |
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| CN103698074A true CN103698074A (en) | 2014-04-02 |
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| CN201310734765.3A Pending CN103698074A (en) | 2013-12-27 | 2013-12-27 | Online monitoring method for residual pretightening force of large-sized prestressed steel wire winding frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106996843A (en) * | 2017-05-05 | 2017-08-01 | 哈电集团（秦皇岛）重型装备有限公司 | HTGR steam (vapor) outlet connecting tube pipe clamp pretightening force measuring apparatus and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08324886A (en) * | 1995-05-31 | 1996-12-10 | Hitachi Cable Ltd | Deformation measuring method and device for flange of winding frame |
| CN2400795Y (en) * | 1999-12-23 | 2000-10-11 | 王洪业 | Ion beam sputtering deposition film pressure transducer |
| US20010032924A1 (en) * | 2000-04-13 | 2001-10-25 | Metso Paper, Inc. | Composite-construction roll and a method for manufacturing it |
| CN102506742A (en) * | 2011-11-22 | 2012-06-20 | 中国二十二冶集团有限公司 | Strain measuring method for large-scale prestressed wire winding machine frame |
-
2013
- 2013-12-27 CN CN201310734765.3A patent/CN103698074A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08324886A (en) * | 1995-05-31 | 1996-12-10 | Hitachi Cable Ltd | Deformation measuring method and device for flange of winding frame |
| CN2400795Y (en) * | 1999-12-23 | 2000-10-11 | 王洪业 | Ion beam sputtering deposition film pressure transducer |
| US20010032924A1 (en) * | 2000-04-13 | 2001-10-25 | Metso Paper, Inc. | Composite-construction roll and a method for manufacturing it |
| CN102506742A (en) * | 2011-11-22 | 2012-06-20 | 中国二十二冶集团有限公司 | Strain measuring method for large-scale prestressed wire winding machine frame |
Non-Patent Citations (2)
| Title |
|---|
| 何文斌等: "基于有限元的大型模锻压力机钢丝缠绕动梁预应力测试", 《机械工程学报》, vol. 48, no. 10, 31 May 2012 (2012-05-31) * |
| 李明娣: "焊接型电阻应变片简介", 《中国设备管理》, 30 April 1996 (1996-04-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106996843A (en) * | 2017-05-05 | 2017-08-01 | 哈电集团（秦皇岛）重型装备有限公司 | HTGR steam (vapor) outlet connecting tube pipe clamp pretightening force measuring apparatus and method |
| CN106996843B (en) * | 2017-05-05 | 2023-02-28 | 哈电集团（秦皇岛）重型装备有限公司 | High-temperature gas cooled reactor steam outlet connecting pipe clamp pretightening force measuring device and method |
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Application publication date: 20140402 |