CN103225269B - Device for automatically controlling and replacing sling of suspension bridge, and sling replacing method based on replacing device - Google Patents
Device for automatically controlling and replacing sling of suspension bridge, and sling replacing method based on replacing device Download PDFInfo
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- CN103225269B CN103225269B CN201310134382.2A CN201310134382A CN103225269B CN 103225269 B CN103225269 B CN 103225269B CN 201310134382 A CN201310134382 A CN 201310134382A CN 103225269 B CN103225269 B CN 103225269B
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- sling
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Abstract
The invention relates to a device for automatically controlling and replacing a sling of a suspension bridge, and a sling replacing method based on the device. The device sets the required sling force through a computer control system and automatically controls rotation of a winch so as to automatically control tension of a temporary sling precisely. Assembling of equipment can be finished quickly on construction site. The whole process adopts a controller to control rotation of the winch, so the sling can be replaced quickly; and a force sensor and a displacement sensor are comprehensively applied to judging whether new and old inhaul cables are stressed equally or not, so the safety is high.
Description
Technical field
The present invention relates to a kind of sling of suspension bridge and automatically control more changing device, belong to bridge engineering maintenance technology field.
Another technical purpose of the present invention is to provide a kind ofly controls the more hoist cable replacing method of changing device automatically based on above-mentioned sling of suspension bridge.
Background technology
Suspension bridge is using the cable of bearing tension or chain cable as the bridge of main supporting member, is mainly made up of parts such as main push-towing rope, hoist cable, Sarasota, anchorage and bridge decks.Hoist cable is the main Force transmission parts of suspension bridge, and the load in bridge deck is passed to main push-towing rope, and main push-towing rope passes to load bridge tower and anchorage again.
Be 30 years to 50 years the general projected life of hoist cable, owing to bearing for a long time the effect of alternate load, adds the impact of rivers marine environment of living in, there will be multiple diseases, as: (1) hoist cable sheath cracking; (2) corrosion of anchor head, cracking, fatigue deformation and infiltration; (3) corrosion and the fracture of wire of steel wire in hoist cable; (4) hanging cable force degenerates.
In the time there are these diseases in hoist cable, can constitute a threat to the safety of bridge, when serious, can cause the generation of bridge collapse accident.Once disease occurs, and should change in time, guarantees bridge operation safety.Although the apparatus and method that also have some hoist cables to change at present, building block is many, forms complicated.Do not form at present the achievement of system for suspension bridge sling replacing technology, when replacing, mostly apply the manual loading such as jack.Hoist cable stretch-draw is controlled target with Suo Changwei, and Suo Li monitoring is accurate not, does not reach the effect of automatic control.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of sling of suspension bridge automatically to control more changing device, fast changeable hoist cable, can control hoist cable stretch-draw automatically.
For realizing above technical purpose, the present invention will take following technical scheme:
A kind of sling of suspension bridge is controlled more changing device automatically, for changing the hoist cable to be replaced between main push-towing rope and steel case beam, comprises controller, hoist engine, interim hoist cable a, interim hoist cable b and suspension; One end of interim hoist cable a is connected with main push-towing rope by suspension, and the other end of interim hoist cable a is wrapped on the runner a of hoist engine, and interim hoist cable a configures strong sensor; One end of interim hoist cable b is fixed on by plug on the reserved otic placode of steel case beam, and the other end of interim hoist cable b is wrapped on the runner b of hoist engine, and interim hoist cable b configuration bit displacement sensor; In addition, the winding direction of described interim hoist cable b on hoist engine runner b is consistent with the winding direction of interim hoist cable a on hoist engine runner a; The pulling force signal that controller feeds back according to power sensor is controlled the action of hoist engine automatically, and whether the new hoist cable that the displacement signal checking of feeding back according to displacement transducer replaces hoist cable to be replaced meets hoist cable replacing requirement.
Described suspension comprises interim cord clip, straddle-type cable wire and backing plate, and this suspension is arranged on hoist cable to be replaced side; Described power sensor is vertically-displacable power sensor, and this vertically-displacable power sensor is placed in the through hole that backing plate center is offered; Described displacement transducer is stay-supported type displacement sensor, and this stay-supported type displacement sensor is placed on backing plate.
The runner a of described hoist engine and runner b, with rotating shaft setting, comprise that respectively compartment of terrain is arranged on two circular steel plate a in rotating shaft, two circular steel plate b; Interim hoist cable a is wrapped between two circular steel plate a, and spacing between two circular steel plate a is slightly larger than interim hoist cable a; Interim hoist cable b is wrapped between two circular steel plate b, and spacing between two circular steel plate b is slightly larger than the diameter of interim hoist cable b.
A kind ofly automatically control the more hoist cable replacing method of changing device based on above-mentioned sling of suspension bridge, first, hoist cable to be replaced side between main push-towing rope and steel case beam is installed described sling of suspension bridge and is automatically controlled more changing device, records the shift value S1 that now displacement transducer shows; Then start controller, the numerical value feeding back according to power sensor is controlled the rotation of hoist engine automatically, until the numerical value that power sensor the feeds back numerical value default with controller is consistent, stops hoist engine and rotates; Then take off hoist cable to be replaced, install new hoist cable; Finally, controller control hoist engine rotates backward, make new hoist cable stressed gradually, in the time that the shown numerical value of power sensor is zero, explanation of force is all transferred on new hoist cable, stops hoist engine and rotates, record the now shown shift value S2 of displacement transducer, if S2 is identical with S1, meet hoist cable and change requirement, complete hoist cable and change.
According to above technical scheme, with respect to prior art, the present invention has following beneficial effect:
1, can accurately automatically control the stretch-draw of interim hoist cable: by computer control system, set required Suo Li, automatically control the rotation of hoist engine, thereby realize the stretch-draw of interim hoist cable.
2, equipment is simple, easy to assembly: the assembling of finishing equipment fast at the construction field (site).
3, quick, safe: overall process adopts the rotation of controller control hoist engine, can realize fast the replacing of hoist cable, and meanwhile, integrated use power sensor and displacement transducer, judge that whether stressed new and old drag-line is identical, safe.
Brief description of the drawings
Fig. 1 is that a kind of sling of suspension bridge of the present invention is controlled the more structural representation of changing device automatically;
Fig. 2 is A-A sectional drawing in Fig. 1;
Wherein: interim cord clip 1; Straddle-type cable wire 2; Controller 3; Interim hoist cable a4; Hoist cable ground tackle 5; Stay-supported type displacement sensor 6; Backing plate 7; Vertically-displacable power sensor 8; Hoist engine 9; Interim hoist cable b10; Main push-towing rope 11; Hoist cable 12 to be replaced, otic placode 13; Steel case beam 14.
Detailed description of the invention
Accompanying drawing discloses the structural representation of preferred embodiment involved in the present invention without limitation; Explain technical scheme of the present invention below with reference to accompanying drawing.
As shown in Figure 1-2, a kind of sling of suspension bridge is controlled more changing device automatically, comprise interim cord clip 1, straddle-type cable wire 2, interim hoist cable a4 and b10, hoist engine 9, vertically-displacable power sensor 8, stay-supported type displacement sensor 6, hoist cable ground tackle 5, center drilling backing plate 7 and controller 3, described interim cord clip 1 is arranged on hoist cable to be replaced 12 side main push-towing ropes 11, described straddle-type cable wire 2 is enclosed within on described interim cord clip 1, lower end is through described backing plate 7, fixing with described hoist cable ground tackle 5, by adjusting hoist cable ground tackle 5, ensure that center drilling backing plate 7 is in level, described interim hoist cable a4 one end is fixed on the runner of described hoist engine 9, one end is successively through center drilling backing plate 7 and vertically-displacable power sensor 8, fixing with hoist cable ground tackle 5 again, described interim hoist cable b10 one end is fixed on the runner of hoist engine 9, one end is fixed on by plug on the reserved otic placode 13 of steel case beam 14, described stay-supported type displacement sensor 6 is fixed on described center drilling backing plate 7, bracing wire is connected on reserved otic placode 13, described hoist engine 9 is fixed on an equipment car, position can change according to the device of hoist cable 12 to be replaced, described vertically-displacable power sensor 8, described stay-supported type displacement sensor 6 is connected with described controller 3 with described hoist engine 9.
As shown in Figure 2, described interim hoist cable a4 and interim hoist cable b10 should be consistent at the winding direction of the runner of described hoist engine 9, two runners on described hoist engine 9 are close to, in the time that described hoist engine 9 rotates, interim hoist cable a4 and interim hoist cable b10 can be wrapped on runner, thereby strain described interim hoist cable.
Before enforcement, in the software program of described controller 3, set the Suo Li of required interim hoist cable, simultaneously, record the shift value S1 that now described stay-supported type displacement sensor 8 shows, then, automatically control the rotation of described hoist engine 9 according to the numerical value of described vertically-displacable power sensor 8, velocity of rotation can be set according to actual conditions.When the numerical value of described vertically-displacable power sensor 8 reaches after setting value, described hoist engine 9 stops operating, and now hoist cable 12 to be replaced, in loosening state, can replace with new hoist cable.Finally, by described controller 3, described hoist engine 9 is reversed, make the hoist cable that newly replaces with stressed, when the numerical value showing when described vertically-displacable power sensor 8 is zero, explanation of force is transferred on new hoist cable completely, stop hoist engine 9 and rotate, record the shift value S2 that now described stay-supported type displacement sensor 6 shows.If S2 is identical with S1, meet the demands, complete replacing; If both differ larger, should adjust, until meet the demands.
Apply a kind of sling of suspension bridge proposed by the invention and automatically control more changing device, can change quickly and safely hoist cable impaired on suspension bridge, there is higher engineering using value.
Claims (4)
1. sling of suspension bridge is controlled a more changing device automatically, for changing the hoist cable to be replaced between main push-towing rope and steel case beam, it is characterized in that: comprise controller, hoist engine, the first interim hoist cable, the second interim hoist cable and suspension; One end of the first interim hoist cable is connected with main push-towing rope by suspension, and the other end of the first interim hoist cable is wrapped on the first runner of hoist engine, and the first interim hoist cable configures strong sensor; One end of the second interim hoist cable is fixed on by plug on the reserved otic placode of steel case beam, and the other end of the second interim hoist cable is wrapped on the second runner of hoist engine, and the second interim hoist cable configuration bit displacement sensor; In addition, the winding direction of the described second interim hoist cable on hoist engine the second runner is consistent with the winding direction of the first interim hoist cable on hoist engine the first runner; The pulling force signal that controller feeds back according to power sensor is controlled the rotation of hoist engine automatically, and whether the new hoist cable that the displacement signal checking of feeding back according to displacement transducer replaces hoist cable to be replaced meets hoist cable replacing requirement.
2. sling of suspension bridge according to claim 1 is controlled more changing device automatically, it is characterized in that: described suspension comprises interim cord clip, straddle-type cable wire and backing plate, and this suspension is arranged on hoist cable to be replaced side; Described power sensor is vertically-displacable power sensor, and this vertically-displacable power sensor is placed in the through hole that backing plate center is offered; Described displacement transducer is stay-supported type displacement sensor, and this stay-supported type displacement sensor is placed on backing plate.
3. sling of suspension bridge according to claim 1 is controlled more changing device automatically, it is characterized in that: the first runner of described hoist engine and the second runner, with rotating shaft setting, comprise that respectively compartment of terrain is arranged on two blocks of first circular steel plates in rotating shaft, two blocks of second circular steel plates; The first interim hoist cable is wrapped between two blocks of first circular steel plates, and spacing between two blocks of first circular steel plates is slightly larger than the first interim hoist cable; The second interim hoist cable is wrapped between two blocks of second circular steel plates, and spacing between two blocks of second circular steel plates is slightly larger than the diameter of the second interim hoist cable.
4. automatically control the more hoist cable replacing method of changing device based on sling of suspension bridge described in claim 1 for one kind, it is characterized in that: first, hoist cable to be replaced side between main push-towing rope and steel case beam is installed described sling of suspension bridge and is automatically controlled more changing device, records the now shown shift value S1 of displacement transducer; Then start controller, the numerical value feeding back according to power sensor is controlled the rotation of hoist engine automatically, until the numerical value that power sensor the feeds back numerical value default with controller is consistent, stops hoist engine and rotates; Then take off hoist cable to be replaced, install new hoist cable; Finally, controller control hoist engine rotates backward, make new hoist cable stressed gradually, in the time that the shown numerical value of power sensor is zero, explanation of force is all transferred on new hoist cable, stops hoist engine and rotates, record the now shown shift value S2 of displacement transducer, if S2 is identical with S1, meet hoist cable and change requirement, complete hoist cable and change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134382.2A CN103225269B (en) | 2013-04-17 | 2013-04-17 | Device for automatically controlling and replacing sling of suspension bridge, and sling replacing method based on replacing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134382.2A CN103225269B (en) | 2013-04-17 | 2013-04-17 | Device for automatically controlling and replacing sling of suspension bridge, and sling replacing method based on replacing device |
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| CN103225269A CN103225269A (en) | 2013-07-31 |
| CN103225269B true CN103225269B (en) | 2014-09-10 |
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| CN201310134382.2A Active CN103225269B (en) | 2013-04-17 | 2013-04-17 | Device for automatically controlling and replacing sling of suspension bridge, and sling replacing method based on replacing device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887701B (en) * | 2016-04-18 | 2018-01-30 | 武汉二航路桥特种工程有限责任公司 | Suspension bridge superstructure is removed with changing installation method |
| CN106744333B (en) * | 2016-12-12 | 2019-04-12 | 河南卫华重型机械股份有限公司 | A kind of control method and system for grabbing bucket and container spreader switches |
| CN107826960B (en) * | 2017-10-20 | 2019-06-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Overhead traveling crane gantry lifting tool replacing options in a kind of metallurgy workshop |
| CN108563805A (en) * | 2018-01-05 | 2018-09-21 | 中国建筑科学研究院有限公司 | Cable force determination method for stay cable replacement project |
| CN109537476B (en) * | 2018-12-10 | 2024-02-23 | 河海大学 | Pin lug type double-temporary-rope self-balancing pulling type suspension bridge sling replacement underpinning device |
| CN110820522A (en) * | 2019-11-22 | 2020-02-21 | 柳州欧维姆机械股份有限公司 | Sling conversion device for replacing main cable of suspension bridge, sling and construction method |
| CN113322834B (en) * | 2021-04-15 | 2022-11-25 | 江苏法尔胜缆索有限公司 | Method for replacing sling of suspension bridge through single-lifting-point tensioning |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2806428A1 (en) * | 2000-03-14 | 2001-09-21 | Freyssinet Int Stup | Installation of new or replacement cable, for suspension bridge, in existing anchor block, has new cable anchored in front extension of original block |
| CN102286943A (en) * | 2011-08-23 | 2011-12-21 | 河海大学 | Suspension bridge sling replacing device |
| CN102071651B (en) * | 2010-12-15 | 2012-06-27 | 江苏法尔胜新日制铁缆索有限公司 | Sling replacement method for suspension bridge |
-
2013
- 2013-04-17 CN CN201310134382.2A patent/CN103225269B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2806428A1 (en) * | 2000-03-14 | 2001-09-21 | Freyssinet Int Stup | Installation of new or replacement cable, for suspension bridge, in existing anchor block, has new cable anchored in front extension of original block |
| CN102071651B (en) * | 2010-12-15 | 2012-06-27 | 江苏法尔胜新日制铁缆索有限公司 | Sling replacement method for suspension bridge |
| CN102286943A (en) * | 2011-08-23 | 2011-12-21 | 河海大学 | Suspension bridge sling replacing device |
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