CN206270275U - A kind of bridge sling monitors sensor - Google Patents
A kind of bridge sling monitors sensor Download PDFInfo
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- CN206270275U CN206270275U CN201621368433.3U CN201621368433U CN206270275U CN 206270275 U CN206270275 U CN 206270275U CN 201621368433 U CN201621368433 U CN 201621368433U CN 206270275 U CN206270275 U CN 206270275U
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- fixed
- hoist cable
- displacement meter
- sensor
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Abstract
The utility model is related to a kind of bridge sling monitoring sensor, including the contactless displacement meter fixed mechanism for being fixed on the sensor fixed mechanism of hoist cable top arch rib and be fixed on the downside of hoist cable, nothing is frictionally inserted into the sensing body member that sensor fixed mechanism is fixed the contactless displacement meter that contactless displacement meter fixed mechanism is fixed upwards.The utility model draws different data-signals by the distance between the anchor point of real-time monitoring hoist cable two ends, and then to judge the safe condition of hoist cable, without carrying out directly contact with hoist cable, it is to avoid cause secondary damage to hoist cable；Detection evaluation can be carried out to whole hoist cable, whole section, whole diseases；Testing result stabilization, is disturbed smaller by extraneous factor, improves the stability and reliability of bridge cable force measurement；Easy for installation, cost is not high, suitable for large-scale promotion.
Description
Technical field
The utility model is related to bridge safety supervision technical field, and in particular to a kind of bridge sling monitors sensor.
Background technology
Funicular system, once occurring damaging, will reduce the use of structure as the major bearing structures of Large Span Bridges long
Property and durability, and be likely to result in bridge structure catastrophic burst malicious event occur.In actual applications although it is contemplated that
Cable protection measure, but because the damage of cable and cause the bridge to carry out the example of the even final destruction of large-scale maintenance
Can be found everywhere.The disconnected Suo Tongji in home and abroad shows that the life-span of bridge cable is not long, domestic many cable system bridges having runed 3~
During 16 years, there occurs that drag-line is disrumpent feelings or changes even bridging toughening due to damaging the serious cable that carries out.
Cable inspection has manual detection and Non-Destructive Testing two ways.Current cable inspection still based on manual detection,
It is only capable of detecting the cosmetic injury of funicular system, it is impossible to do not destroying on the premise of cable body is protected to the rust inside cable
Eating off silk situation carries out inspection differentiation, therefore there is following some deficiency：
1）It is insufficient for the requirement for early warning being carried out to cable burn into fracture of wire and being found；
2）Cable guard system is caused serious harm by damage testing；
3）It is difficult to the complete detection of cable body total length；
4）Artificial breakage is checked wastes time and energy, of a high price.
For Non-Destructive Testing, there is a kind of system detected on the premise of the hoist cable that do not destroy a bridge at present, its
Mainly include mechanical creep system and image capturing system.Mechanical creep system in the method includes dividing plate, in the middle of dividing plate
The through hole passed through for hoist cable is provided with, dividing plate top surface is provided with clamping device, and bottom surface is provided with two groups of crawling devices；Clamping device bag
At least two clamp assemblies set around hoist cable are included, clamp assembly includes sliding member and the clamping being installed in sliding member
Wheel, sliding member can adjust the distance between correspondence pinch wheels and hoist cable；Image capturing system is mainly used in shooting outside hoist cable
The image on surface.
The shortcoming that the detecting system is primarily present：
1）Clamp hoist cable by sliding member and pinch wheels, due to be both needed to before detection every time adjustment pinch wheels and hoist cable it
Between distance, and different bridge sling diameter is different, therefore the distance is difficult to control to, it is possible to occur between pinch wheels and hoist cable
Relative slip or stuck so that detection means is difficult to stabilized walking；
2）The set system is mainly the open defect of bridge sling is monitored, and most of arch bridges that destruction occurs is main
Because there is fracture of wire or corrosion situation inside hoist cable, therefore the fracture of wire corrosion situation of bridge sling how is detected well
Just it is particularly important.
In addition also have on hoist cable install various kinds of sensors detecting system, for example magnetic flux transducer, pressure sensor,
Fiber-optic grating sensor etc..Wherein magnetic flux transducer is made based on magnetoelasticity, for the stress Non-Destructive Testing of ferromagnetic component,
The magnetic flux that the detection means is measured is a static absolute voltage value, and over time, this magnitude of voltage can be due to
Magnetic flux transducer Inside coil and other electronic components aging and cause data wander.Therefore just need to detect the set
Device re-starts field calibration, and the difficulty of increase and the data processing of cost is will also result in accordingly.Determination of pressure sensor
The precision of method is of a relatively high, but must be used cooperatively with jack when using, therefore the method is applied to the construction stage
Cable tension test.In addition, determination of pressure sensor method also has a dynamic response poor, short life, the shortcomings of expensive.Fiber grating
Sensor arrangement makes intellectual rib deformation synchronous with steel wire in drag-line, it is adaptable to parallel steel wire rope, guy of twisted steel cable rope in drag-line
Power（Or ess-strain）Long term monitoring.Although it has the advantages that strong antijamming capability, small volume, lightweight, sensitivity are high,
But not specially treated fiber grating is very fragile, directly it is laid in cable and is easily broken.Therefore the above method exists
Applied in bridge machinery engineering and had some limitations.
The content of the invention
The purpose of this utility model is to provide a kind of bridge sling monitoring sensor, overcomes and lack present in prior art
Fall into.
The technical scheme that the utility model is used for：
A kind of bridge sling monitors sensor, it is characterised in that：
Including the contactless displacement for being fixed on the sensor fixed mechanism of hoist cable top arch rib and be fixed on the downside of hoist cable
Meter fixed mechanism；
The upward nothing of contactless displacement meter that contactless displacement meter fixed mechanism is fixed is frictionally inserted into sensor and fixes
In the sensing body member that mechanism is fixed.
Sensor fixed mechanism includes upper anchoring piece, upper steel elements and inner tubular element；
In the lower surface of upper anchoring piece, inner tubular element is inserted upwardly into steel elements and passes through upper steel elements vertical welding
Engagement thread is connected, and sensing body member is fixed on inner tubular element by welding manner.
Contactless displacement meter fixed mechanism includes lower anchoring piece and lower steel elements；
Lower steel elements vertical welding is in the upper surface of lower anchoring piece, and lower steel elements upper orifice is provided with bulkhead, non-
Contact displacement meter is threadedly mutually fixed with bulkhead.
Overcoat protection pipe is threadedly installed, lower steel elements top is inserted upwardly into outside upper steel elements bottom
Overcoat protection pipe；
Sensing body member and contactless displacement meter are respectively positioned in overcoat protection pipe.
The communication data line for sensing body member is located at the top of sensing body member, the circle opened up from upper steel elements
Hole is stretched out.
The screwed hole for installing anchor bolt is provided with upper anchoring piece and lower anchoring piece.
The utility model has advantages below：
1）Without carrying out directly contact with hoist cable, it is to avoid cause secondary damage to hoist cable；
2）Detection evaluation can be carried out to whole hoist cable, whole section, whole diseases；
3）Testing result stabilization, is disturbed smaller by extraneous factor, improves the stability and reliability of bridge cable force measurement；
4）Easy for installation, cost is not high, suitable for large-scale promotion.
Brief description of the drawings
Fig. 1 is that hoist cable monitors sensor structure figure.
Fig. 2 is sensor fixed mechanism structure chart.
Fig. 3 is overcoat protection pipe structural representation.
Fig. 4 is sensing body member structure chart.
Fig. 5 is contactless displacement meter fixed mechanism structure chart.
Fig. 6 is the plan of upper anchoring piece and lower anchoring piece.
In figure, the upper steel elements of 1-, 2- circular holes, 3- inner tubular elements, 4- overcoat protection pipes, 5- sensing body members, 6- is non-
Contact displacement meter, 7- bulkheads, steel elements under 8-, the upper anchoring pieces of 9-, anchoring piece under 10-, 11- anchor bolts, 12- communications
Data wire.
Specific embodiment
The utility model is described in detail with reference to specific embodiment.
A kind of bridge sling monitoring sensor that the utility model is related to, including the sensor for being fixed on hoist cable top arch rib
Fixed mechanism and the contactless displacement meter fixed mechanism being fixed on the downside of hoist cable.Contactless displacement meter fixed mechanism is fixed
Contactless displacement meter 6 upwards without being frictionally inserted into the sensing body member 5 that sensor fixed mechanism is fixed.
The sensor fixed mechanism includes upper anchoring piece 9, upper steel elements 1 and inner tubular element 3.Upper steel elements 1 are hung down
The lower surface of anchoring piece 9 is directly welded in, inner tubular element 3 is inserted upwardly into steel elements 1 and threadedly connects, sensed
Body member 5 is fixed on inner tubular element 3 by welding manner.
The contactless displacement meter fixed mechanism includes lower anchoring piece 10 and lower steel elements 8.Lower steel elements 8 are vertical
The upper surface of lower anchoring piece 10 is welded in, the lower upper orifice of steel elements 8 is provided with bulkhead 7, and contactless displacement meter 6 passes through spiral shell
Line mode is mutually fixed with bulkhead 7.
Overcoat protection pipe 4 is threadedly installed, the lower top of steel elements 8 is upward outside the bottom of upper steel elements 1
Insertion overcoat protection pipe 4, sensing body member 5 and contactless displacement meter 6 are respectively positioned in overcoat protection pipe 4.
The communication data line 12 for sensing body member 5 is located at the top of sensing body member 5, is opened from upper steel elements 1
If circular hole 2 stretch out.
The screwed hole for installing anchor bolt 11 is provided with upper anchoring piece 9 and lower anchoring piece 10.
The amount of being open to traffic on bridge all the time is different, and the design load of bridge keeps constant, so in different vehicle flowrates
In the case of, the length of hoist cable will occur telescopic variation；When thering is heavy-duty vehicle to pass through on bridge or vehicle flowrate is larger, hoist cable
Distance between the anchor point of two ends will increase, and the length that now contactless displacement meter 6 is extend into sensing body member 5 will
Shorten, resulting resistance will reduce.I.e. contactless displacement meter 6 extend into the difference of length in sensing body member 5,
Can cause that the resistance sizes sensed produced by body member 5 change；Built-in length is more long, and the resistance of generation is bigger, stretches into
Length is shorter, and the resistance of generation is smaller.And due to the difference of resistance, can cause that sensing body member 5 show that different detections are believed
Number, the detection signal is input to data acquisition unit by signal acquisition port, is most input into computer after A/D converter afterwards,
Hoist cable testing result just can be obtained after being processed through computer.Therefore main operational principle of the present utility model is：By real-time
Distance between the anchor point of monitoring hoist cable two ends draws different data-signals, and then to judge the safe condition of hoist cable.
Installation of the present utility model is comprised the following steps：
1st, upper anchoring piece 9 is connected with the arch rib beside hoist cable top；
2nd, upper steel elements 1 are welded and fixed with upper anchoring piece 9；
3rd, inner tubular element 3 is used with upper steel elements 1 and is threadedly coupled；
4th, sensing body member 5 is carried out spot welding and fixed with inner tubular element 3, wherein sense the data wire of body member 5 from
The circular hole 2 of a diameter of 7mm is passed in upper steel elements 1；
5th, the anchor bolt 11 of lower anchoring piece 10 is fixed on hoist cable downside, and ensures it with upper anchoring piece 9 in same
On vertical curve；
6th, overcoat protection pipe 4 is enclosed within lower steel elements 8, and the bottom of lower steel elements 8 is carried out with lower anchoring piece 10
Welding；
7th, contactless displacement meter 6 is extend into the aperture of sensing body member 5 lower end, and by contactless displacement meter
6 lower ends use with bulkhead 7 and are threadedly coupled；Note：The inwall of contactless displacement meter 6 and sensing body member 5 is without friction
8th, overcoat protection pipe 4 is used with upper steel elements 1 and is threadedly coupled.
Note：Hoist cable detection sensor need to be ensured vertically, and control its horizontal range away from hoist cable between 15cm-20cm.
The performance requirement of each part is as follows：
1st, sensor fixed mechanism and hoist cable have identical elastic modelling quantity, it is ensured that it being capable of compatible deformation with hoist cable；Together
When also act as the effect of fixed sensing body member 5, it is ensured that sensing body member 5 is not disturbed by extraneous factor at work.
2nd, contactless displacement meter fixed mechanism need to ensure closely to be connected with sensor fixed mechanism, prevent rainwater from entering and pass
Inside sensor, and require that its material is good, be not susceptible to corrosion, can play to the good protective effect of sensor.
3rd, contactless displacement meter fixed mechanism and hoist cable have identical elastic modelling quantity, it is ensured that it can coordinate with hoist cable
Deformation；The effect of fixed contactless displacement meter 6 is also acted as simultaneously, it is ensured that contactless displacement meter 6 is not at work by the external world
Factor is disturbed.
Specific testing process is comprised the following steps：
The first step：The city for introducing bridge tower by drum supplies electricity to instrument and powers, and checks equipment situation and recognizes that field power supply is made an uproar
Sound, power supply is relatively stablized, and noise is on detecting without influence.
Second step：Under conditions of outer PE protective cases are not removed, sensor is arranged on by hoist cable to be measured, heel distance hoist cable two
The change of distance between the anchor point of end, sensor can return to different detection informations.
3rd step：Detection information is input to data acquisition unit by signal acquisition port, after A/D converter therein
Input computer, hoist cable testing result is obtained after being processed through computer.
4th step：For the hoist cable that there is abnormal signal, with reference to the original of the practical structures discriminatory analysis abnormal signal of hoist cable
Cause, under abnormal conditions caused by removing structure, then the damage position and degree of injury for carrying out discriminatory analysis hoist cable.
5th step：Data are preserved and arranged.Hoist cable for there is history detection data can be by historical data differential pair score
Analysis is further analyzed, and is skipped if without historical data.
6th step：According to detection data, the damage check report of establishment hoist cable.
Content of the present utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality
Type specification and any equivalent conversion taken technical solutions of the utility model, are claim institute of the present utility model
Cover.
Claims (6)
1. a kind of bridge sling monitors sensor, it is characterised in that：
Contactless displacement meter including being fixed on the sensor fixed mechanism of hoist cable top arch rib and be fixed on the downside of hoist cable is consolidated
Determine mechanism；
The contactless displacement meter that contactless displacement meter fixed mechanism is fixed（6）Nothing is frictionally inserted into sensor and fixes machine upwards
The sensing body member that structure is fixed（5）It is interior.
2. a kind of bridge sling according to claim 1 monitors sensor, it is characterised in that：
Sensor fixed mechanism includes upper anchoring piece（9）, upper steel elements（1）And inner tubular element（3）；
Upper steel elements（1）Vertical welding is in upper anchoring piece（9）Lower surface, inner tubular element（3）It is inserted upwardly into steel elements
（1）And threadedly connect, sense body member（5）Inner tubular element is fixed on by welding manner（3）.
3. a kind of bridge sling according to claim 2 monitors sensor, it is characterised in that：
Contactless displacement meter fixed mechanism includes lower anchoring piece（10）With lower steel elements（8）；
Lower steel elements（8）Vertical welding is in lower anchoring piece（10）Upper surface, lower steel elements（8）Upper orifice is provided with plug
Plate（7）, contactless displacement meter（6）Threadedly with bulkhead（7）It is mutually fixed.
4. a kind of bridge sling according to claim 3 monitors sensor, it is characterised in that：
Upper steel elements（1）Overcoat protection pipe is threadedly installed outside bottom（4）, lower steel elements（8）Top to
Upper insertion overcoat protection pipe（4）；
Sensing body member（5）With contactless displacement meter（6）It is respectively positioned on overcoat protection pipe（4）It is interior.
5. a kind of bridge sling according to claim 4 monitors sensor, it is characterised in that：
Sensing body member（5）Communication data line（12）Positioned at sensing body member（5）Top, from upper steel elements（1）
On the circular hole that opens up（2）Stretch out.
6. a kind of bridge sling according to claim 5 monitors sensor, it is characterised in that：
Upper anchoring piece（9）With lower anchoring piece（10）On be provided with for installing anchor bolt（11）Screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621368433.3U CN206270275U (en) | 2016-12-14 | 2016-12-14 | A kind of bridge sling monitors sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621368433.3U CN206270275U (en) | 2016-12-14 | 2016-12-14 | A kind of bridge sling monitors sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206270275U true CN206270275U (en) | 2017-06-20 |
Family
ID=59045384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621368433.3U Active CN206270275U (en) | 2016-12-14 | 2016-12-14 | A kind of bridge sling monitors sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206270275U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770481A (en) * | 2016-12-14 | 2017-05-31 | 吉林省公路管理局 | Bridge sling monitors sensor |
| CN109629414A (en) * | 2019-01-31 | 2019-04-16 | 姜自奇 | A kind of bridge sling crawling device |
-
2016
- 2016-12-14 CN CN201621368433.3U patent/CN206270275U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770481A (en) * | 2016-12-14 | 2017-05-31 | 吉林省公路管理局 | Bridge sling monitors sensor |
| CN109629414A (en) * | 2019-01-31 | 2019-04-16 | 姜自奇 | A kind of bridge sling crawling device |
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