CN102116694B - Circuit for testing tensile force of steel wire rope - Google Patents
Circuit for testing tensile force of steel wire rope Download PDFInfo
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- CN102116694B CN102116694B CN2011100247299A CN201110024729A CN102116694B CN 102116694 B CN102116694 B CN 102116694B CN 2011100247299 A CN2011100247299 A CN 2011100247299A CN 201110024729 A CN201110024729 A CN 201110024729A CN 102116694 B CN102116694 B CN 102116694B
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- signal amplifier
- data acquisition
- intelligent data
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- tensile force
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- 238000012360 testing method Methods 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 title abstract 3
- 239000010959 steel Substances 0.000 title abstract 3
- 238000009864 tensile test Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention relates to a circuit for testing tensile force of a steel wire rope. The circuit comprises a tensile force sensor, a first-stage signal amplifier, a data acquisition device and a display device, wherein the output end of the tensile force sensor is connected with the input end of the first-stage signal amplifier; the circuit is further provided with a second-stage signal amplifier, the data acquisition device is an intelligent data acquisition device with two input ends, the output of the first-stage signal amplifier is divided into two ways, and one way is directly connected with one input end of the intelligent data acquisition device; and the other way is connected with the other input end of the intelligent data acquisition device through the second-stage signal amplifier, and the output end of the intelligent data acquisition device is connected with the input end of the display device. Two signal amplifiers and the two-way input intelligent data acquisition device are adopted in the circuit, in a tensile test of the steel wire rope, the requirements on precision of large tensile force measurement and small tensile force measurement can be simultaneously ensured under the situation of not replacing the sensor.
Description
Technical field
The present invention relates to a kind of tensile test circuit, especially relate to a kind of wire rope stretching tensile test circuit.
Background technology
Existing wire rope stretching tensile test circuit is to be connected and composed in order by pulling force sensor, amplifier, collector and display.Its principle of work is: pulling force sensor output and the linear mV level signal of pulling force; Amplifier zooms into the small-signal of pulling force sensor output the voltage signal (or the voltage of other standards or current signal) of 0-10V; Collector is delivered to display and shows the tensile test data this signals collecting.But all there are certain error in any sensor and amplifier.Actual measured value is got over the full scale of proximity transducer, and relative error is just more little; Actual measured value is more little, and relative error is just big more.For example, the range of a pulling force sensor is 200 tons, and error is 1%, and then absolute error is:
1%=2 ton of 200 tons of *
If when with same sensor and amplifier 5 tons pulling force being measured, relative error is:
2 tons/5 tons=40%
Obviously, this error is too big.Best solution is exactly to change the sensor and the amplifier of 5 tons of ranges.But, in the lineoutofservice signal pull process of the test, emat sensor more.
Summary of the invention
The object of the present invention is to provide a kind of new wire rope stretching tensile test circuit; Use this wire rope stretching tensile test circuit; In the lineoutofservice signal pull test; Not more under the situation of emat sensor, both can satisfy the accuracy requirement of big tension measurement, the accuracy requirement in the time of can satisfying little tension measurement again.
Technical scheme of the present invention is: it comprises pulling force sensor, first order signal amplifier, data acquisition unit, display, and the output terminal of said pulling force sensor is connected with the input end of first order signal amplifier; Also be provided with second level signal amplifier, said data acquisition unit is the intelligent data collector that is provided with two input ends, and first order signal amplifier output is divided into two-way, and wherein one the tunnel directly links to each other with an input end of intelligent data collector; Another road is connected with another input end of intelligent data collector through second level signal amplifier, and the output terminal of intelligent data collector is connected with the input end of display.
The present invention is actually on existing tensile test circuit base, and a signal amplifier is set again, promptly sets up second level signal amplifier, and the original signal amplifier is a first order signal amplifier.First order signal amplifier is identical with signal amplifier in the existing tensile test circuit, at pulling force output 0-10V during from 0-full scale (as 200 tons); The output terminal of the input termination first order signal amplifier of second level signal amplifier; Second level signal amplifier amplifies the output of first order signal amplifier again; Make pulling force from 0-during the little pulling force (as 5 tons) set, second level signal amplifier is output as 0-10V.Data acquisition unit is used the intelligent data collector of 2 tunnel inputs instead, and 2 tunnel inputs of intelligent data collector insert the output of first order signal amplifier and second level signal amplifier respectively.Said 2 the tunnel import intelligent collector, gather two paths of signals simultaneously, and to discern automatically according to the value of the 1 road or the 2 road signal be big pulling force or little pulling force at this moment.When big pulling force, adopt the output conversion of signals of first order amplifier to become displayed value; When little pulling force, adopt the output conversion of signals of second level amplifier to become displayed value.
The present invention adopts 2 signal amplifiers and 2 tunnel input intelligent type signal collectors, in the lineoutofservice signal pull test, not more under the situation of emat sensor, can guarantee the accuracy requirement of big tension measurement and little tension measurement simultaneously.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the embodiment of the invention.
Embodiment
With reference to Fig. 1, present embodiment comprises pulling force sensor 1, first order signal amplifier 2, second level signal amplifier 3, intelligent data collector 4, display 5, and the output terminal of said pulling force sensor 1 is connected with the input end of first order signal amplifier 2; Said first order signal amplifier 2 outputs are divided into two-way; Wherein one the tunnel directly links to each other with an input end of intelligent data collector 4; Another road is connected with another input end of intelligent data collector 4 through second level signal amplifier 3, and the output terminal of intelligent data collector 4 is connected with the input end of display 5.
First order signal amplifier 2 of the present invention is identical with signal amplifier function in the existing stretching tensile test circuit, for example, and during work, at pulling force output 0-10V signal (or other standard signal) during from 0-full scale (as 200 tons); The output terminal of the input termination first order amplifier 2 of second level signal amplifier 3, second level amplifier amplifies the output of first order amplifier again, make pulling force from 0-during the little pulling force (for example 5 tons) set, the signal of second level amplifier output also is 0-10V; Intelligent data collector 4 adopts the intelligent data collector of 2 tunnel inputs, and 2 tunnel inputs of intelligent data collector 4 insert the output of first order amplifier 2 and the output of second level amplifier 3 respectively.Said 2 the tunnel import intelligent collector, gather two paths of signals simultaneously, and to discern automatically according to the value of the 1 road or the 2 road signal be big pulling force or little pulling force at this moment.When the value of thrust that records is big, adopt the output conversion of signals of first order amplifier 2 to become displayed value; When the value of thrust that records is less than or equal to the smaller value of setting, adopt the output conversion of signals of second level amplifier 3 to become displayed value.
The present invention adopts 2 signal amplifiers and 2 tunnel input intelligent data collectors, in the lineoutofservice signal pull test, not more under the situation of emat sensor, can guarantee the accuracy requirement of big tension measurement and little tension measurement simultaneously.
Claims (1)
1. a wire rope stretching tensile test circuit comprises pulling force sensor, first order signal amplifier, data acquisition unit, display, and the output terminal of said pulling force sensor is connected with the input end of first order signal amplifier; It is characterized in that; Also be provided with second level signal amplifier; Said data acquisition unit is the intelligent data collector that is provided with two input ends, and first order signal amplifier output is divided into two-way, and wherein one the tunnel directly links to each other with an input end of intelligent data collector; Another road is connected with another input end of intelligent data collector through second level signal amplifier, and the output terminal of intelligent data collector is connected with the input end of display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100247299A CN102116694B (en) | 2011-01-24 | 2011-01-24 | Circuit for testing tensile force of steel wire rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100247299A CN102116694B (en) | 2011-01-24 | 2011-01-24 | Circuit for testing tensile force of steel wire rope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102116694A CN102116694A (en) | 2011-07-06 |
| CN102116694B true CN102116694B (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100247299A Expired - Fee Related CN102116694B (en) | 2011-01-24 | 2011-01-24 | Circuit for testing tensile force of steel wire rope |
Country Status (1)
| Country | Link |
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| CN (1) | CN102116694B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880273B (en) * | 2015-06-10 | 2018-01-05 | 重庆交通大学 | Prestress wire prestressing force measurement apparatus and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138792Y (en) * | 1992-02-27 | 1993-07-21 | 湖南省交通科学研究所 | Steel cable tension detector |
| JP2819564B2 (en) * | 1988-07-29 | 1998-10-30 | 株式会社島津製作所 | Material testing machine |
| CN2709964Y (en) * | 2004-07-29 | 2005-07-13 | 上海永通机械厂 | Tension sensor |
| CN201935768U (en) * | 2011-01-24 | 2011-08-17 | 罗光寿 | Stretching tension test circuit for steel wire rope |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62128047A (en) * | 1985-11-28 | 1987-06-10 | Otani Denki Kk | Tape running device |
-
2011
- 2011-01-24 CN CN2011100247299A patent/CN102116694B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2819564B2 (en) * | 1988-07-29 | 1998-10-30 | 株式会社島津製作所 | Material testing machine |
| CN2138792Y (en) * | 1992-02-27 | 1993-07-21 | 湖南省交通科学研究所 | Steel cable tension detector |
| CN2709964Y (en) * | 2004-07-29 | 2005-07-13 | 上海永通机械厂 | Tension sensor |
| CN201935768U (en) * | 2011-01-24 | 2011-08-17 | 罗光寿 | Stretching tension test circuit for steel wire rope |
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| Publication number | Publication date |
|---|---|
| CN102116694A (en) | 2011-07-06 |
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Owner name: HUNAN TONGYUAN ELECTRICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LUO GUANGSHOU Effective date: 20120709 Free format text: FORMER OWNER: LONG HENGFENG CHEN WU Effective date: 20120709 |
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Effective date of registration: 20120709 Address after: 410205 Hunan province Changsha city science and Technology Park Lugu high tech Development Zone, Lu Tin Road No. 11 Patentee after: Hunan Tongyuan Electrical Technology Co., Ltd. Address before: 410205 Hunan province Changsha city science and Technology Park Lugu high tech Development Zone, Lu Tin Road No. 11 Co-patentee before: Long Hengfeng Patentee before: Luo Guangshou Co-patentee before: Chen Wu |
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