CN106441680A - Long-distance steel wire rope pulling force detection system - Google Patents
Long-distance steel wire rope pulling force detection system Download PDFInfo
- Publication number
- CN106441680A CN106441680A CN201611134142.2A CN201611134142A CN106441680A CN 106441680 A CN106441680 A CN 106441680A CN 201611134142 A CN201611134142 A CN 201611134142A CN 106441680 A CN106441680 A CN 106441680A
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- CN
- China
- Prior art keywords
- steel wire
- wire rope
- pulling force
- stress
- detection system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
- G01L5/103—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using sensors fixed at one end of the flexible member
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a long-distance steel wire rope pulling force detection system which comprises a pulling force sensor and a steel wire rope; the pulling force sensor comprises a matrix; a salient is arranged on the upper end surface of the matrix and is provided with a pulling force blind hole; stress blind holes are formed in the opposite front and back end surfaces of the matrix respectively and coaxially arranged opposite to each other; a resistance strain gauge is arranged in each stress blind hole; a part in which the two stress blind holes of the matrix are located has an I-shaped beam structure; a plurality of hoisting rings, each of which is connected with a corresponding fixed supporting seat, are installed on the steel wire rope in a sleeving manner; one end of the steel wire rope is fixedly connected with the pulling force blind hole of the pulling force sensor; and the other end of the steel wire rope is fixedly connected with a weight after being wound on a fixed pulley and drops. According to the long-distance steel wire rope pulling force detection system, vertical pulling force and pressure can be converted into horizontal pulling force, so that the function of rapid detection is realized.
Description
Technical field
The present invention relates to pull force calculation field, force detection system pullled by specifically a kind of distance steel wire rope.
Background technology
The use principle of existing stretching force detecting apparatus is to apply pulling force on the test object, then pulling force is detected,
Pull force calculation can only be realized it is impossible to realize the function of pressure detecting simultaneously.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of distance steel wire rope to pull force detection system, can will be vertical
Pulling force becomes the pulling force of level with pressure conversion, realizes the function of quick detection.
The technical scheme is that：
Force detection system pullled by distance steel wire rope, includes pulling force sensor and steel wire rope；Described pulling force sensor
Include matrix, the upper surface of matrix is provided with projection, projection is provided with pulling force blind hole, the front and rear end of matrix phase pair
On be provided with stress blind hole, and the stress blind hole of both ends of the surface is coaxially oppositely arranged, and stress in the hole is provided with resistance strain gage,
Part that two stress blind holes of described matrix are located is structural I-beam；It is set with multiple suspension ring on described steel wire rope, each
Suspension ring are connected with fixing corresponding bearing, and described one end of steel wire rope is fixedly connected with the pulling force blind hole of pulling force sensor, separately
One ends wound is fixedly connected with a counterweight after fixed pulley tenesmus.
Two stress blind holes are provided with the front and rear end of described matrix phase pair, two on front end face stress is blind
Hole is coaxially oppositely arranged one by one with two stress blind holes on rear end face, and part that four stress blind holes of matrix are located forms two works
Word girder construction.
It is provided with resistance strain gage, four resistance strain gages connect composition favour stone electricity in four described stress blind holes
Bridge.
The described suspension ring of neighbouring counterweight are integrated with fixed pulley, and this suspension ring is loop configuration, and outer ring is pulley
Track, the other end of steel wire rope is fixedly connected with a counterweight after being wound in pulley track tenesmus.
A diameter of 2.5-3.5mm of described steel wire rope, the true footpath of suspension ring is 9-11mm.
The length of described steel wire rope horizontal component is 100-200m, and the distance between adjacent suspension ring are 2-5m.
Be screwed with bolt in described pulling force blind hole, the head of bolt be fixedly installed draw ring, one end of steel wire rope with
Draw ring connects.
Advantages of the present invention：
When having object to apply pressure or pulling force to steel wire rope, steel wire rope i.e. can be to the rightabout of pressure or pulling force
Direction pullled, thus wire rope transfers pulling force signal is to pulling force sensor, pulling force sensor sends a signal to monolithic
Machine, the force value of analysis is sent to display and is shown or controlled alarm to be reported to the police by single-chip microcomputer, and the present invention can will erect
Straight pulling force becomes the pulling force of level with pressure conversion, realizes the function of quick detection；The setting of the distance between adjacent suspension ring guarantees
The steel wire rope that power is this segment distance of pullling being subject between two adjacent suspension ring is pullled power by vertical, and this two suspension ring
Outer other steel wire ropes are only subject to the pulling force of level, that is, be subject to pull the vertical of the steel wire rope of power section and pull power, by neighbouring
Two suspension ring and make steel wire rope be changed into the pulling force of level to the pulling force between pulling force sensor, eliminate because of distance steel wire rope
Tension force have influence on measurement accuracy.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the front view of pulling force sensor of the present invention.
Fig. 3 is the rearview of pulling force sensor of the present invention.
Fig. 4 is the top view of pulling force sensor of the present invention.
Fig. 5 is that the present invention is subject to state diagram during pressure at right angle.
Fig. 6 is that the present invention is subject to state diagram during vertical tension.
Fig. 7 is the mechanical model schematic diagram of He Zhushiliang.
Fig. 8 is strain zone position and the stress envelope of I-beam part of the present invention.
Fig. 9 is the structural representation of Wheatstone bridge of the present invention.
Figure 10 is measurement data figure during environmental change.
Figure 11 is measurement data figure during external force change.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
See Fig. 1, force detection system pullled by distance steel wire rope, include pulling force sensor 02 and steel wire rope 01；See Fig. 2-
4, pulling force sensor 02 includes matrix 21, the upper surface of matrix 21 is provided with raised 22, is provided with pulling force blind on raised 22
Hole 23, the relative front and rear end of matrix 21 is provided with two stress blind holes 24, and two stress on matrix 21 front end face are blind
Hole 24 is coaxially oppositely arranged one by one with two stress blind holes 24 on rear end face, and being provided with resistance in four stress blind holes 24 should
Become piece, four resistance strain gages connect composition Wheatstone bridge, and part that four stress blind holes 24 of matrix are located forms two I-shapeds
Girder construction；Multiple suspension ring 03 are set with steel wire rope 01, each suspension ring 03 is connected with fixing corresponding bearing 04, pulling force sensor
It is screwed with bolt in 02 pulling force blind hole, the head of bolt is fixedly installed draw ring, one end of steel wire rope 01 is connected with draw ring, separately
One end is fixedly connected with a counterweight 05, and the outer ring of the suspension ring 03 of neighbouring counterweight 05 is pulley track, and the other end of steel wire rope 01 twines
It is fixedly connected with a counterweight 05 after being around in pulley track tenesmus.
Wherein, a diameter of 2.5-3.5mm of steel wire rope, the true footpath of suspension ring is 9-11mm, the length of steel wire rope horizontal component
For 100-200m, the distance between adjacent suspension ring are 2-5m.
Fig. 5 is that steel wire rope 01 is subject to external pressure (to be considered as pressure at right angle) when impacting, and by stress, interval neighbouring two are hung
The positioning function of ring 03, makes the pulling force of steel wire rope 01 to pulling force sensor 02 be changed into the pulling force of level.Fig. 6 is changed into for vertical tension
Horizontal pull.
Pulling force sensor mechanical model：
Pulling force sensor can be simplified to two ends stress concentrfated load shear beam or pillar beam, and mechanical model illustrates Fig. 7.
The Stress calculation of middle stress load effect：
The shear stress of beam and shearing strain calculate：
Shear beam sensor generally individually add two stress blind holes (being partially formed I-beam) in the flex point of strain beam, it is cut
Stress can be calculated with Nikolay Zhuravsky formula：
The strain zone position of local structural I-beam and stress distribution such as Fig. 8 such as show.
In formula:
Shearing Q
Static moment S to axis for the shearing sectiony
Moments of inertia J to axis for the shearing sectiony
Then
The principal stress in 45 ° of directions and principal strain calculate, and along along beam, the length change of bobbin directional pressure at 45 °, exactly pure
Principal direction of stress under shearing force state, its principal stress and maximum shear stress, principal strain and maximum shear strain are in following relationship：
Transducer sensitivity calculates：
In formula：K --- resistance strain gage sensitivity coefficient
Pulling force sensor core circuit -- resistance bridge：
Measuring circuit is wheatstone bridge circuits, abbreviation measuring bridge.Sensitivity is high, measure model due to having for measuring bridge
Enclose that width, circuit structure be simple, high precision, the advantages of easily realize temperature-compensating, therefore can meet strain measurement well will
Ask.Wheatstone bridge divides direct-current bridge and two kinds of AC bridge according to the property of power supply, and when Ui is for direct current, this electric bridge is direct current
Electric bridge, bridge circuit is as shown in Figure 9.
R is foil gauge impedance, and sensor can produce deformation when being acted on by external force, cause and be close in sensor
Foil gauge impedance on portion's wall linearly increaseds or decreases.In the case of having externally fed (3 12VDC), the differential levels of output
The also linearly increasing reduction of mv signal, after sensor passes through to organize bridge, zeroing, trim sensitivity, temperature compensation etc., the signal=confession of output
The sensitivity of piezoelectric voltage x, such as regulated power supply are 10VDC, and transducer sensitivity is 1.5mv/V, and sensor exports to during full scale
Voltage=10x1.5=15mv, need to join signal adapter (pick-up if necessary to 0-5V (4-20mA etc.) standard analog signal
Device).
Sensor technology parameter：
Range：0 200kg (can be expanded by use requirement and reduce range)
Accuracy:0.2%FS
Running voltage：12VDC
Output signal：(0-10)mV
Operating temperature：-20℃-70℃
Limiting pressure：≥300kg
Input impedance：700±20Ω
Output impedance：700±5Ω
Insulation resistance：≥5000MΩ
Non-linear：± 0.3%F S
Delayed：± 0.3%F S
Repeatability：± 0.5%F S.
Force analysis：
The pulling force sensor that steel wire rope connects can measure pulling force and pressure suffered by steel wire rope.But due to distance
Steel wire rope in nature use can because blow, rain and the impact of other factorses and so that steel wire rope is produced and rock and shake
Dynamic, so measurand the to be analyzed and environmental disturbances influence degree to measurement result.
1st, the impact to measurement result for the environmental change：
When Figure 10 is environmental change, plus motive power on a steel cord, lead to the variation diagram of sensor measurement data.
As can see from Figure 10, calculated with counterbalance 10kg, when steel wire rope is in " static " state, the pulling force that sensor is subject to is changed
Become measurement voltage about 2mV, when that is, steel wire rope is in the pulling force of 10kg, sensor exports about 2mV.When blowing hard, wind is to steel wire
The maximum impact about 3.8mV of rope；Rocking and vibrating the maximum on steel wire rope of fixed object itself affects about 3.5mV.
2nd, the impact to measurement result for the external force change
When Figure 11 is that steel wire rope is subject to external force to pull change, plus active force of pullling on a steel cord leads to sensor to measure
The variation diagram of data.As can see from Figure 11, calculated with counterbalance 10kg, when steel wire rope remains static, sensor is subject to
To pulling force be converted into measure voltage about 2mV, when that is, steel wire rope is in the pulling force of 10kg all the time, sensor export about 2mV.When scraping
During strong wind, the wind about 3.8mV of the impact to steel wire rope；The rocking and vibrate impact maximum to steel wire rope about of fixed object itself
3.5mV.And steel wire rope be subject to external force more than 60kg when, sensor output signal is more than more than 6mV.Judged with this, as long as steel wire
What rope was subject to pulls power more than 60kg, and measuring system is it may determine that be detection signal or the real tested letter of nature impact
Number.This signal is introduced in warning system, realizes warning function.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (7)
1. distance steel wire rope pull force detection system it is characterised in that：Include pulling force sensor and steel wire rope；Described draws
Force transducer includes matrix, the upper surface of matrix is provided with projection, projection is provided with pulling force blind hole, matrix phase pair
Stress blind hole is provided with front and rear end, and the stress blind hole of both ends of the surface is coaxially oppositely arranged, stress in the hole is provided with electricity
Resistance foil gauge, described part that two stress blind holes of matrix are located is structural I-beam；It is set with multiple on described steel wire rope
Suspension ring, each suspension ring is connected with fixing corresponding bearing, and described one end of steel wire rope is solid with the pulling force blind hole of pulling force sensor
Fixed connection, the other end is fixedly connected with a counterweight after being wound in fixed pulley tenesmus.
2. distance steel wire rope according to claim 1 pull force detection system it is characterised in that：Described matrix phase pair
Front and rear end on be provided with two stress blind holes, two stress on two on front end face stress blind hole and rear end face
Blind hole is coaxially oppositely arranged one by one, and part that four stress blind holes of matrix are located forms two structural I-beams.
3. distance steel wire rope according to claim 2 pull force detection system it is characterised in that：Four described stress
It is provided with resistance strain gage, four resistance strain gages connect composition Wheatstone bridge in blind hole.
4. distance steel wire rope according to claim 1 pull force detection system it is characterised in that：Described neighbouring counterweight
Suspension ring be integrated with fixed pulley, this suspension ring is loop configuration, and outer ring is pulley track, and the other end of steel wire rope is wound around
It is fixedly connected with a counterweight after pulley track tenesmus.
5. distance steel wire rope according to claim 1 pull force detection system it is characterised in that：Described steel wire rope
A diameter of 2.5-3.5mm, the true footpath of suspension ring is 9-11mm.
6. distance steel wire rope according to claim 1 pull force detection system it is characterised in that：Described steel wire rope water
The length of flat part is 100-200m, and the distance between adjacent suspension ring are 2-5m.
7. distance steel wire rope according to claim 1 pull force detection system it is characterised in that：Described pulling force blind hole
Inside it is screwed with bolt, the head of bolt is fixedly installed draw ring, one end of steel wire rope is connected with draw ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611134142.2A CN106441680A (en) | 2016-12-10 | 2016-12-10 | Long-distance steel wire rope pulling force detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611134142.2A CN106441680A (en) | 2016-12-10 | 2016-12-10 | Long-distance steel wire rope pulling force detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106441680A true CN106441680A (en) | 2017-02-22 |
Family
ID=58216519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611134142.2A Withdrawn CN106441680A (en) | 2016-12-10 | 2016-12-10 | Long-distance steel wire rope pulling force detection system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106441680A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729668A (en) * | 2020-12-24 | 2021-04-30 | 中国航天空气动力技术研究院 | Sensor pre-tightening device of large-scale small-load force measuring equipment |
| CN114018455A (en) * | 2021-10-29 | 2022-02-08 | 南京杰曼绑扎件制造有限公司 | Pressure testing method for marine container binding piece |
| CN114250812A (en) * | 2021-11-30 | 2022-03-29 | 中铁大桥局集团第五工程有限公司 | Device and method for measuring relative distance of underwater steel pipe pile |
| CN115265882A (en) * | 2022-04-22 | 2022-11-01 | 陕西理工大学 | Strain type tension sensor |
| CN115717951A (en) * | 2022-10-13 | 2023-02-28 | 无锡盛赛传感科技有限公司 | High-performance piezoresistive ceramic tension sensor, processing technology thereof and tool for processing |
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| CN205719366U (en) * | 2016-05-31 | 2016-11-23 | 苏州台菱电梯有限公司 | Portable elevator pull rope tension detecting apparatus |
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| US6880412B1 (en) * | 1999-03-11 | 2005-04-19 | Pawan R. Gupta | Device and method for testing the tension in stressed cables of concrete structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729668A (en) * | 2020-12-24 | 2021-04-30 | 中国航天空气动力技术研究院 | Sensor pre-tightening device of large-scale small-load force measuring equipment |
| CN112729668B (en) * | 2020-12-24 | 2022-03-04 | 中国航天空气动力技术研究院 | Sensor pre-tightening device of large-scale small-load force measuring equipment |
| CN114018455A (en) * | 2021-10-29 | 2022-02-08 | 南京杰曼绑扎件制造有限公司 | Pressure testing method for marine container binding piece |
| CN114250812A (en) * | 2021-11-30 | 2022-03-29 | 中铁大桥局集团第五工程有限公司 | Device and method for measuring relative distance of underwater steel pipe pile |
| CN115265882A (en) * | 2022-04-22 | 2022-11-01 | 陕西理工大学 | Strain type tension sensor |
| CN115265882B (en) * | 2022-04-22 | 2024-10-01 | 陕西理工大学 | Strain type tension sensor |
| CN115717951A (en) * | 2022-10-13 | 2023-02-28 | 无锡盛赛传感科技有限公司 | High-performance piezoresistive ceramic tension sensor, processing technology thereof and tool for processing |
| CN115717951B (en) * | 2022-10-13 | 2023-11-21 | 无锡盛赛传感科技有限公司 | High-performance piezoresistive ceramic tension sensor, processing technology thereof and tooling for processing |
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Application publication date: 20170222 |
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