CN1948117A - Displacement on line measuring method of tower crane structure - Google Patents
Displacement on line measuring method of tower crane structure Download PDFInfo
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- CN1948117A CN1948117A CN 200610097407 CN200610097407A CN1948117A CN 1948117 A CN1948117 A CN 1948117A CN 200610097407 CN200610097407 CN 200610097407 CN 200610097407 A CN200610097407 A CN 200610097407A CN 1948117 A CN1948117 A CN 1948117A
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- displacement
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Abstract
An in-line measuring method for the structural displacement of tower crane includes such steps as arranging an angle sensor at the pivoted root of gibbet, detecting the angle variation of gibbet, A/D conversion to become digital signal, inputting the digital signal to single-chip processor, and processing by mathematic model to obtain the structural displacement.
Description
Technical field
The present invention relates to a kind of displacement on line measuring method of tower crane structure, belong to the survey control technology field.
Background technology
In industries such as building, electric power, water conservancy, petrochemical industry, mine, generally need to use in a large number hoisting crane to carry out lifting, transportation, loading and unloading, especially in construction project, it is quite big to work the quantities that re-mounts, need to use crane lifting and carrying large volume, heavy weight various kinds of equipment and raw MAT'L, thereby its safety is just quite important, for this reason, country classifies elevator machinery as safety, dangerous bigger special equipment, has all formulated strict standard and state compulsory standard from being designed into production.In the national standard strict regulation has been done in the safety of hoisting crane, the various safety devices that hoisting crane should be equipped with have been stipulated, as load moment limiter, load lifting limiter, height limitator, amplitude limiting device, or the like, these safety devices play a good role to the trouble free service that guarantees hoisting crane.A but important indicator as crane safety: crane structure displacement, just in relevant standard, done technical requirements, as stipulating in the tower crane standard: under independent antenna height and standard duty, the horizontal displacement of jib root hinge must not surpass 1% of its body of the tower height.And the inspection of stipulating this index generally is to detect with theodolite when the hoisting crane production-type test.Can't onlinely detect when the actual use of hoisting crane, uncontrollable behind crane structure displacement index exceeding standard, this all brings very big hidden danger to chaufeur and weight-lifting equipment itself.In actual use, because of operating against regulations and simple economic pursuit benefit does not consider that the situation of the equipment work limit happens occasionally, and this just is easy to cause hoisting crane to collapse and personal casualty, and great industrial accident happens occasionally.Therefore, invent a kind of On-line Measuring Method of tower type crane structure displacement, just seem very urgent in the hoisting crane industry.
Summary of the invention
Purpose of the present invention is exactly at the problem that presses for solution in the prior art, a kind of On-line Measuring Method of tower type crane structure displacement is proposed, by this method, play the effect that prevention tower crane complete machine topples, effectively ensure hoisting crane and operating personnel's life security.
Technical solution of the present invention is: the steps in sequence branch of method of measurement
One, at the crane arm root hinge setting angle sensor of tower crane.
Two, detect crane arm root angle with angular transducer and change, and convert analog electrical signal to.
Three, angle change modeling electric signal converts the treatable digital signal of micro controller system to by analog quantity input interface circuit and A/D change-over circuit.
Four, angle changes digital electric signal access micro controller system, and after handling through corresponding math modeling, the level variation that draws the crane arm root is the tower type crane structure displacement.
Advantage of the present invention: realized online the detection, but actv. control crane structure displacement index plays the effect that can prevent the tower crane complete machine to topple, and effectively ensures hoisting crane and operating personnel's life security.
Description of drawings
Accompanying drawing 1 is a diagram of circuit of the present invention.
Accompanying drawing 2 is electric functional block diagrams of the present invention.
Accompanying drawing 3 is structure principle charts of current potential formula angular transducer.
Δ V among the figure is poor between A point, B point current potential.
The specific embodiment
Contrast accompanying drawing 1, the On-line Measuring Method steps in sequence of tower type crane structure displacement is
One, at the crane arm root hinge setting angle sensor of tower crane.
Two, detect crane arm root angle with angular transducer and change, and convert analog electrical signal to.
Three, angle change modeling electric signal converts the treatable digital signal of micro controller system to by analog quantity input interface circuit and A/D change-over circuit.
Four, angle changes digital electric signal access micro controller system, and after handling through corresponding math modeling, the level variation that draws the crane arm root is the tower type crane structure displacement.
During practical application, use theodolite or other equipment to record the two sub-level changing value Y1 and the Y2 of crane arm root and write down corresponding angle changing value X1 and X2, derive curvilinear function by following process:
K1＝Y1/X1；K2＝Y2/X2
ΔK＝(K2-K1)/(X2-X1)
K＝K1-ΔK*X
Y＝(K+ΔK*X)*X
In the formula, X is the current angle changing value of angular transducer, and Y is the horizontal changing value of crane arm root.Therefore in the allowed band of tower type crane structure displacement, can calculate corresponding crane structure shift value Y according to the angle changing value X of crane arm root hinge.
Contrast accompanying drawing 2, angular transducer links to each other with discharge circuit, discharge circuit links to each other with the A/D change-over circuit, the A/D change-over circuit links to each other with micro controller system, micro controller system links to each other with display driver circuit and light-emitting diode display respectively, links to each other with data storage circuitry, links to each other with alarm control circuit, link to each other with button inputting circuits, link to each other with clock circuit; Angular transducer is sent the analog signals that records into discharge circuit, after treatment, send into the A/D change-over circuit and convert digital quantity to, send in the micro controller system, micro controller system obtains the crane structure displacement with this digital quantity signal by the math modeling processing under the control of program, and can compare with the warning and the control data of data storage circuitry, produce corresponding the warning and control.
Contrast accompanying drawing 3, half is a conductive liquid in current potential formula angular transducer inside, and half is a unreactable gas, and the rotation of sensor will cause the linear change of resistance between measuring point A, B and the conductive liquid, thereby causes corresponding current potential output signal to change.
Claims (4)
1, a kind of displacement on line measuring method of tower crane structure, the steps in sequence that it is characterized in that its method of measurement be divided into one, at the crane arm root hinge setting angle sensor of tower crane; Two, detect crane arm root angle with angular transducer and change, and convert analog electrical signal to; Three, angle change modeling electric signal converts the treatable digital signal of micro controller system to by analog quantity input interface circuit and A/D change-over circuit; Four, angle changes digital electric signal access micro controller system, and after handling through corresponding math modeling, the level variation that draws the crane arm root is the tower type crane structure displacement.
2, according to the described a kind of displacement on line measuring method of tower crane structure of claim 1, it is characterized in that described angular transducer is a current potential formula angular transducer, half is a conductive liquid in current potential formula angular transducer inside, half is a unreactable gas, the rotation of sensor will cause the linear change of resistance between measuring point A, B and the conductive liquid, thereby causes corresponding current potential output signal to change.
3,, it is characterized in that the detected analog quantity of described angular transducer converts the treatable digital signal of micro controller system to through the A/D change-over circuit according to the described a kind of displacement on line measuring method of tower crane structure of claim 1.
4, according to the described a kind of displacement on line measuring method of tower crane structure of claim 1, it is characterized in that described math modeling:
Use theodolite or other equipment to record the two sub-level changing value Y1 and the Y2 of crane arm root and write down corresponding angle changing value X1 and X2, derive curvilinear function by following process:
K1＝Y1/X1；K2＝Y2/X2
ΔK＝(K2-K1)/(X2-X1)
K＝K1-ΔK*X
Y＝(K+ΔK*X)*X
In the formula, X is the current angle changing value of angular transducer, and Y is the horizontal changing value of crane arm root.Therefore in the allowed band of tower type crane structure displacement, can calculate corresponding crane structure shift value Y according to the angle changing value X of crane arm root hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610097407 CN1948117A (en) | 2006-11-06 | 2006-11-06 | Displacement on line measuring method of tower crane structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610097407 CN1948117A (en) | 2006-11-06 | 2006-11-06 | Displacement on line measuring method of tower crane structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1948117A true CN1948117A (en) | 2007-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200610097407 Pending CN1948117A (en) | 2006-11-06 | 2006-11-06 | Displacement on line measuring method of tower crane structure |
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| CN (1) | CN1948117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556864A (en) * | 2011-12-31 | 2012-07-11 | 浙江德英建设机械制造有限公司 | Pre-warning device for safety inspection to tower body of tower crane |
| CN103754773A (en) * | 2013-12-24 | 2014-04-30 | 浙江三一装备有限公司 | Crawler crane and angle measurement device thereof |
-
2006
- 2006-11-06 CN CN 200610097407 patent/CN1948117A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556864A (en) * | 2011-12-31 | 2012-07-11 | 浙江德英建设机械制造有限公司 | Pre-warning device for safety inspection to tower body of tower crane |
| CN103754773A (en) * | 2013-12-24 | 2014-04-30 | 浙江三一装备有限公司 | Crawler crane and angle measurement device thereof |
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Open date: 20070418 |