CN101177931B - Erection of gantry type small-cycle traction system on large-span suspension bridge main cable - Google Patents
Erection of gantry type small-cycle traction system on large-span suspension bridge main cable Download PDFInfo
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- CN101177931B CN101177931B CN2007101686066A CN200710168606A CN101177931B CN 101177931 B CN101177931 B CN 101177931B CN 2007101686066 A CN2007101686066 A CN 2007101686066A CN 200710168606 A CN200710168606 A CN 200710168606A CN 101177931 B CN101177931 B CN 101177931B
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Abstract
The invention relates to a small-circulation traction system of a door frame type for main cable erection of a suspension bridge with large span, pertaining to the construction technical field of the upper structure of a bridge. A cable storing area is arrange at the back of an anchorage A, and a 60-ton gantry crane and a cable stent are positioned in the cable storing area; a traction rope gyroscope wheel is arranged at the back of the anchorage A; a 25-ton main traction winch and a balance stent are arranged at the side of an anchorage B; a traction cable is connected with a pulling device at the place of the anchorage A and bypasses a drum of the winch at the place of the anchorage B, and the traction cable is plugged after passing the balance stent and each corner block, so as to form an annular endless cable; through traction driving and a door frame tackle, the guide-wheel group moves in horizontal and circling, so as to form a separate small circulation traction system; the small circulation has the advantages of large power, large traction force, high construction efficiency and low cost.
Description
Technical field
The present invention relates to main rope of suspension bridge erection construction method, belong to suspension bridge superstructure technical field of construction.
The main push-towing rope erection of gantry type small-cycle traction system is to utilize two reel friction-type hoist engine shuttling movements to realize that main push-towing rope sets up.Gantry type small-cycle traction system is suitable for setting up of various span main rope of suspension bridge, especially puts rope at main push-towing rope and has obvious superiority aspect the synchronism with drawing.
Background technology
Main push-towing rope is suspension bridge " lifeline ", and main push-towing rope sets up the construction quality that quality is directly connected to suspension bridge.
Usually large-span suspension bridge main cable sets up and adopts the reciprocating type trailer system of two-wire, but the main and auxiliary rack winch of this trailer system is arranged in the two sides of bridge main span respectively, because signal or other accidental causes, occur the phenomenon of main and auxiliary hoist engine " to drawing " easily, influence main push-towing rope and set up speed and quality.
Summary of the invention
The objective of the invention is provides a kind of reliable, continuous main push-towing rope hitch frame equipment, method at above the deficiencies in the prior art.The present invention relates to the method that a kind of main rope of suspension bridge traction is set up, be characterized in utilizing a hoist engine (11) as power, by an electrodeless circulation drag cable (10) and commentaries on classics, directive wheel, realize the drag cable shuttling movement, reach the purpose that main push-towing rope is set up in traction.This trailer system is provided with balance weight (12), can adjust the sag of drag cable (10) automatically, and the whole distraction procedure of main push-towing rope is more smooth-going, the raising strand is set up quality play good effect.
This trailer system mainly by: deposit cable system, supporting is transported facilities such as system, power circulation system, tensioning debugging mechanism and formed.
1, deposit cable system: deposit, put the rope district establish 60t straddle truck (13) and band brake torque motor put rope device (14) each one, deposit cable tray (24) quantity can reach 60 the dish.
2, system is transported in supporting: the A anchorage is put the rope district and is established the length glue cylinder, and the main push-towing rope outside in cat road is gone up every interval 8m and established supporting directive wheel (15) one.Big and main cable saddle, the cable saddle position of loosing suitably increase supporting directive wheel quantity or with the wheels that lead in the discrepancy in elevation.
3, power circulation system
3.1 drag cable (10): adopt Φ 36mm not rotate independent wire strand, the about 4800m of total length customizes in professional production producer.In the drag cable two ends, an end connects by pulling device (7), and an end directly docks, and forms electrodeless rope circuit.
3.2 drag cable turns to: A anchorage (11) is located the level of establishing and is turned to, and B anchorage (14) is established level and vertically turned to, and cat road door frame (38), AB king-tower (12) (13), cable saddle (23) buttress that looses are established guide wheel group.
3.3 pull device (7): pulling device is the facility that drag cable and main cable strand link, and sets up with the traction that realizes strand.
3.4 rack winch: open the two reels of the grooving sassafras formula rack winch that rubs, using frequency converter to set volume after a certain speed, to put constant airspeed, the rope stretching position of wire rope constant, and frequency converter can be realized the infinitely variable speeds in 5～30m/min scope; Form TT﹠C system by being installed in test suite such as pulling force sensor on the fixed pulley and amplifier and computer, by computer dynamic collection and the real-time operation total length of the tractive force of each section point and velocity variations situation, wire rope in the distraction procedure, preserve at any time and print.Can set pulling force and length velocity relation according to concrete operating mode, carry out the semi-automation under the manual intervention.
Important technological parameters:
Work effective traction: 250kN
Hauling speed: 5～30m/min infinitely variable speeds
Receive rope roll and hold rope amount: 2500m
Reel: two reels, friction-type
Drive: hoist engine is wanted can be just, backward haulage
Brakes: electronic or hydraulic pressure declutches automatically
The kind of drive: machinery or hydraulic pressure
Motor :～3 * 380V, FC=100%, 110kW, the starting of Wound-rotor type series resistance
Control mode: drum controller is a central controller, the rotor resistance starting speed governing
4, tensioning debugging mechanism: the circulation trailer system is subjected to that variations in temperature, drag cable elastic deformation are lax, the influence of the factors such as variation of hoist engine backward pull, erected state, must establish tensioning and adjust facility.Adopt the mode of trim weight.
Description of drawings
Fig. 1 a, Fig. 1 b: gantry type partial circulating general arrangement front view, vertical view
Fig. 2: the A anchorage is put rope district facade arrangement diagram
Fig. 3 a, Fig. 3 b:B anchorage towing area and tensioning debugging arrangement of mechanism vertical view, front view
Fig. 4: cat head arrangement diagram
Fig. 5: cat road door frame and door frame guide wheel arrangement diagram
Among the figure: 1-is put the rope district, the 2-towing area, and 3-door frame support cable, the 4-cat head turns to, 5-cat road door frame and guide wheel, the 6-main cable strand, 7-pulls device, 8-cat road, 9-strand idler pulley, 10-drag cable, 11-A anchorage, 12-A king-tower, the 13-B king-tower, 14-B anchorage, 15-25t hoist engine, the 16-balance weight, 17-60t single track gantry crane, 18-is put the rope device, the 19-roller, 20-drag cable rotary support and pulley, 21-8t hoist engine, 22-buttress door frame guide wheel group, the 23-cable saddle that looses, 24-rope dish, 25-cat road track cable, 26-buttress door frame, 27-balance weight support, the 28-angle pulley, 29-door frame support cable saddle, 30-cat head door frame, the 31-guide wheel group, 32-manrope saddle, 33-cat road track cable saddle, the 34-manrope, 35-pull device, 36-main cable saddle, the 37-reaction frame, 38-cat road door frame, 39-cat road door frame guide wheel.
The specific embodiment
Overall construction scheme of architecture: the employing PPWS worker method of setting up of main push-towing rope, be about to rope dish (24) and be installed in putting on the rope support behind the A anchorage, anchor head is drawn from Suo Panshang, anchor head is fixed on by the anchor head frame pulls that device (7) is gone up and be connected with drag cable (10), drive circulation drag cable (10) positive movement by the 25t rack winch (15) that is arranged in B anchorage (14) downstream, strand is dilatory towards B anchorage (14) along the cat road from A anchorage (11), draw a branch ofly, strand falls within on the supporting wheel of arranging along the cat road at every turn.In time correct the reversing of strand, crooked and loose distortion etc. in the distraction procedure.Strand is dilatory put in place after, the two ends anchor head is temporarily fixed at the anchor pole place respectively, these steel wires are just turned round to parastate, lift by crane traversing at each saddle place to strand carry out shaping, strand is made in order, puts into the saddle precalculated position.The two ends anchor head is introduced to anchor rack anchoring position by introducing device.In the locking of saddle place, anchor span is adjusted by adjusting the strand pulling force after the sag adjustment.After single strand sets up and finishes, drive the counter motion of circulation drag cable, will pull device and be back to the A anchorage, carry out setting up of next root strand by the B anchorage by rack winch.
The overall Construction Arrangement of main push-towing rope erection of gantry type small-cycle traction system: behind the A anchorage, establish and deposit the rope district, 60 tons of gantry cranes (17) are installed and are put the rope support; Behind the A anchorage, establish drag cable rotary support and pulley (20); Establish one 25 tons rack winches (15) and balance weight support (27) in B anchorage downstream.Drag cable (10) is made up of 2 Φ 36 wire rope, connect by pulling device (7) at A anchorage (11), walk around the hoist engine cylinder at the B anchor, by balance weight support (27) with respectively turn to, peg graft behind the leading block, form the ring-type endless cable, do the horizontal cyclic motion by traction drive and door frame coaster, guide wheel group, form independently small-cycle traction system, to satisfy the needs that set up main push-towing rope.
Claims (3)
1. the small-cycle traction system that sets up of large-span suspension bridge main cable, comprise that main rope deposits cable system, system is transported in supporting, power circulation system, tensioning debugging mechanism, it is characterized in that drag cable walks around two reels of a friction-type hoist engine, by the balance weight support with respectively turn to, socket connection behind the leading block, form horizontal ring-type endless cable, under the traction drive effect, around two reel friction-type hoist engines, the balance weight support, angle pulley, cat road door frame guide wheel, the cat head guide wheel group, supporting door frame guide wheel group, drag cable rotary support pulley is done the horizontal cyclic motion.
2. the small-cycle traction system that sets up of main rope of suspension bridge according to claim 1, it is characterized in that: be connected with on the electrodeless drag cable of ring-type and pull device, pull device and be connected with main push-towing rope, moving of drag cable can drive the same moved further of main cable strand.
3. the small-cycle traction system that sets up of main rope of suspension bridge according to claim 1, it is characterized in that: the drive unit of the electrodeless drag cable of ring-type is a two reel friction-type hoist engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101686066A CN101177931B (en) | 2007-12-05 | 2007-12-05 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101686066A CN101177931B (en) | 2007-12-05 | 2007-12-05 | Erection of gantry type small-cycle traction system on large-span suspension bridge main cable |
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| Publication Number | Publication Date |
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| CN101177931A CN101177931A (en) | 2008-05-14 |
| CN101177931B true CN101177931B (en) | 2011-08-10 |
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| CN113152281B (en) * | 2021-03-15 | 2023-04-07 | 中交二公局第二工程有限公司 | Main cable structure of suspension bridge cable crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108729362A (en) * | 2018-04-20 | 2018-11-02 | 武汉中交试验检测加固工程有限责任公司 | A kind of Long span pipe bridge facade circulating picture-changing cable system and its application method |
| CN108729362B (en) * | 2018-04-20 | 2020-05-12 | 武汉中交试验检测加固工程有限责任公司 | Large-span pipe bridge vertical face circulating cable replacement system and use method thereof |
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| CN101177931A (en) | 2008-05-14 |
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Owner name: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Free format text: FORMER OWNER: CHINA ZHONGTIE MAJOR BRIDGE ENGINEERING CO., LTD. Effective date: 20150216 |
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Effective date of registration: 20150216 Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 430074 Hubei province Wuhan Dongxin East Lake New Technology Development Zone Road Business Street No. 6 building SBI Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. |