CN107869112B - Traction system and method for bridge with large curvature radius - Google Patents
Traction system and method for bridge with large curvature radius Download PDFInfo
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- CN107869112B CN107869112B CN201711148743.3A CN201711148743A CN107869112B CN 107869112 B CN107869112 B CN 107869112B CN 201711148743 A CN201711148743 A CN 201711148743A CN 107869112 B CN107869112 B CN 107869112B
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- trolley
- pulley
- seat
- steel wire
- girder
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 238000013459 approach Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 3
- 240000006394 Sorghum bicolor Species 0.000 description 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
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Abstract
The invention discloses a dragging system and a method for a bridge with a large curvature radius, wherein the dragging system comprises a girder transporting trolley track, the trolley track is arranged on a transverse distribution girder, two ends of the girder transporting trolley track are respectively provided with a motor, a reduction gearbox and a slow-motion winch, the motor drives the slow-motion winch through the reduction gearbox, the girder transporting trolley is arranged on the trolley track, a rope seat is further connected to a frame of the girder transporting trolley, and a steel wire rope is arranged on the rope seat and connected with the slow-motion winch. The dragging method comprises the following steps: the steel box girder with large curvature radius is placed on a girder transporting trolley and can be transported on a curved track through the tension of a steel wire rope; the steel wire rope can be arranged along the track direction through the guide pulley after being tensioned. The trolley traveling wheel can freely rotate 360 degrees along the axis direction of the rotating shaft, so that the trolley can be fully ensured to smoothly reciprocate along the track with a large curvature radius, and the applicability is strong; the rope seat is arranged at the lower parts of the two cross beams, so that the tension of the steel wire rope to the trolley is conveniently adjusted, the mechanical efficiency is increased, the possibility of derailment of the trolley is reduced, and the reliability of the trolley is further improved.
Description
Technical Field
The invention relates to the technical field of bridge engineering construction, in particular to a girder transporting trolley for a bridge with a large curvature radius.
Background
Along with the rapid development of traffic networks, more and more bridges need to span or run through facilities such as existing highways, railways, rivers and the like, and in order not to influence the normal operation of the existing facilities, a pushing construction method and a turning construction method are mainly adopted at present. The prior art has the following disadvantages: 1. the bridge is not suitable for multi-span variable sorghum, and has a curve with a curvature change and a bridge with a large vertical curvature; 2. the pushing span is more than 70-80 m and is uneconomical due to the limitation of the bending moment of the pushing cantilever; 3. repeated stress in the pushing process makes the beam height take a large value, temporary beams are more, and the tensioning process is complicated; 4. the pushing process is slower in construction progress along with the increase of bridge length; 5. the swivel construction is more complex than the pushing construction, and has extremely high requirements on construction technology.
Disclosure of Invention
The invention aims to solve the technical problem of providing a traction system and a traction method for a bridge with a large curvature radius, which are reliable in operation and high in applicability.
The technical scheme adopted by the invention is as follows: a traction system for a large radius of curvature bridge, characterized by: including fortune roof beam dolly track, the dolly track is installed on horizontal distribution roof beam, is equipped with motor, reducing gear box, slow-moving hoist engine respectively at fortune roof beam dolly orbital both ends, the motor passes through the reducing gear box drive slow-moving hoist engine, is equipped with fortune roof beam dolly on the dolly track, fortune roof beam dolly includes the frame, is connected with the travelling wheel group respectively at the both ends of frame, travelling wheel group includes the bogie, is equipped with the pivot on the bogie, the both ends of pivot match with the bogie through the bearing respectively, the lower extreme of pivot is connected with the travelling wheel seat, disposes the travelling wheel on the travelling wheel seat, still is connected with the rope seat on the frame, disposes wire rope on the rope seat and links to each other with slow-moving hoist engine.
According to the technical scheme, the guide pulleys are arranged on the transverse distribution beam, are connected with the transverse distribution beam through the rotating shaft and are fixed through the pin shafts, and the steel wire ropes wound on the slow-motion windlass on two sides of the beam transporting trolley track are guided through the guide pulleys.
According to the technical scheme, the bogie is connected with the flange plate fixed on the frame.
According to the technical scheme, the frame comprises longitudinal beams and cross beams, wherein the two ends of the longitudinal beams are respectively connected with the cross beams, flange plates are connected to the corners of the longitudinal beams and the cross beams, longitudinal ribs are further connected between the two cross beams, and transverse ribs are further connected between the two longitudinal beams.
According to the technical scheme, the rope seat is arranged on the cross beam, and the steel wire rope is arranged on the rope seat.
According to the technical scheme, the groove is arranged in the middle of the travelling wheel and is used for preventing the trolley from derailing.
According to the technical scheme, the guide pulley comprises a pulley steering seat, a pulley seat and a pulley, wherein the pulley is arranged on the pulley seat, the pulley seat is fixed on the pulley steering seat through a rotating shaft and a bolt, and the pulley steering seat is fixed on the transverse distribution beam.
A method for hauling a bridge having a large radius of curvature, comprising: the method comprises the following steps:
s1, providing the traction system for the bridge with the large curvature radius;
s2, installing a motor, a reduction gearbox and a slow-motion winch on a winch support, adjusting the initial position of a girder transporting trolley, installing a steel wire rope on a rope seat, tensioning the steel wire rope along a girder transporting trolley track, and hoisting a steel box girder onto the girder transporting trolley;
s3, starting a motor, transmitting power to a slow-motion winch through a reduction gearbox, driving a steel wire rope through rotation of a drum of the slow-motion winch, and tensioning the steel wire rope along the track direction of the girder transporting trolley through transverse constraint of a guide pulley;
s4, starting transportation, when the girder transporting trolley is close to a guide pulley through which the girder transporting trolley passes, pulling out a bolt of the guide pulley to rotate the guide pulley by 90 degrees, avoiding interference between a rope seat of the girder transporting trolley and the guide pulley, and rotating the pulley to the original position after the girder transporting trolley integrally passes through the pulley to continuously control the arrangement form and the tension direction of the steel wire rope.
The beneficial effects obtained by the invention are as follows:
1. the system is suitable for multi-span variable high beams, the curves with the curvature changes and the bridges with the large vertical curvatures solve the practical problem that the pushing construction of the existing large-curvature-radius steel box beams is difficult to complete, and besides the large-curvature steel box beams, other span existing line steel box beams can also be constructed by adopting the system, so that the operation is simpler and the cost is saved;
2. the beam-transporting trolley traveling wheel can freely rotate 360 degrees along the axis direction of the rotating shaft, so that the trolley can be fully ensured to smoothly reciprocate along the track with a large curvature radius, and the applicability is strong;
3. the rope seat is arranged at the lower parts of the two cross beams, so that the tension of the steel wire rope to the trolley is conveniently adjusted, the mechanical efficiency is increased, the possibility of derailment of the trolley is reduced, and the reliability of the trolley is further improved.
Drawings
FIG. 1 is a schematic view of the overall construction of the towing system of the present invention.
Fig. 2 is a schematic diagram of a power system installed on a hoist support in the present invention.
Fig. 3 is a schematic transverse cross-sectional view of the towing system of the present invention.
Fig. 4 is a front cross-sectional view of a guide pulley according to the present invention.
Fig. 5 is a front view of the guide pulley of the present invention.
Fig. 6 is a schematic plan view of a beam transport trolley according to the present invention.
Fig. 7 is a lateral side view of the beam transport trolley of the present invention.
Fig. 8 is a front view of a running wheel set of a girder transporting trolley in the present invention.
Fig. 9 is a front cross-sectional view of a beam transport trolley set in accordance with the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-3, the present embodiment provides a traction system for a bridge with a large radius of curvature, which comprises a girder transporting trolley track 4, wherein the trolley track 4 is arranged on a transverse distribution girder 5, winch supports 9 are respectively arranged at the starting end and the ending end of the girder transporting trolley track, a motor 1, a reduction gearbox 2 and a slow-motion winch 3 are arranged on the winch supports 9, the motor 1 drives the slow-motion winch 3 through the reduction gearbox 2, and a girder transporting trolley 7 is arranged on the trolley track 4. As shown in fig. 6-9, the beam-running trolley 7 comprises a frame 17, two ends of the frame 17 are respectively connected with a running wheel set 16, the running wheel set comprises a bogie 22, a rotating shaft 24 is arranged on the bogie 22, two ends of the rotating shaft are respectively configured with the bogie 16 through thrust aligning roller bearings (21, 23), the lower end of the rotating shaft 24 is connected with a running wheel seat 18, a running wheel 20 is configured on the running wheel seat 18, and the running wheel 20 is configured with a running wheel shaft 19 on the running wheel seat 18. The frame 17 comprises a longitudinal beam 26 and a cross beam 25, wherein two ends of the longitudinal beam 26 are respectively connected with the cross beam 25, flange plates 29 are connected to the corners where the longitudinal beam 26 and the cross beam are connected, longitudinal ribs 27 are further connected between the two cross beams, transverse ribs 28 are further connected between the two longitudinal beams, rope seats 30 are respectively connected to the lower ends of the two cross beams 28, and steel wire ropes 8 are arranged on the rope seats 30. Wherein the bogie 17 is connected with a flange plate fixed on the frame.
When running, the running wheels 20 of the trolley are directly placed on the rail, and grooves are formed in the middle of the running wheels 20, so that the trolley can be prevented from derailing. The steel wire rope is fixed on the rope seat 30, the steel wire rope applies tension to the trolley through the rope seat 30, and the rope seat is arranged at the lower part so as to be convenient for adjusting the tension applied to the trolley by the steel wire rope. Because the trolley traveling wheels can freely rotate 360 degrees along the axial direction of the rotating shaft 24, the trolley can be fully ensured to smoothly reciprocate along the track with a large curvature radius.
According to the invention, for erection of steel box girders with different sizes, the cross beams 25, the longitudinal beams 26, the longitudinal ribs 27 and the transverse ribs 28 of the girder transporting trolley frame 17 can be adjusted according to the length and the width of the steel box girders.
Wherein, the steel wire rope 8 is wound on the slow-moving windlass 3 at two ends of the rail 4 of the girder transporting trolley, and is matched with the guide pulley 6 fixed on the transverse distribution beam of the rail, so that the steel wire rope 8 is approximately arranged along the shape of the curve rail by bending instead of bending, the pulling force direction of the trolley through the rope seat is always along the rail direction, thereby increasing the mechanical efficiency and simultaneously reducing the possibility of derailment of the trolley
In this embodiment, as shown in fig. 4-5, the guide pulleys 6 are distributed on the transverse distribution beam 5 at intervals, the guide pulleys 6 comprise pulley steering seats 11, pulley seats 14 and pulleys 15, the pulleys 15 are arranged on the pulley seats 14, the pulley seats 14 are fixed on the pulley steering seats 11 through rotating shafts 12 and bolts 13, the pulley steering seats 11 are fixed on the transverse distribution beam 5, and the steel wire ropes 8 wound on the slow-motion winders on two sides of the rail of the beam transporting trolley are guided through the guide pulleys 6. The pin 13 constrains the plane rotation of the guide pulley 6, when the girder transporting trolley 7 approaches the guide pulley, the pin 13 can be pulled out to rotate the guide pulley 6 by 90 degrees, the interference between the trolley rope seat and the guide pulley 6 is avoided, and the whole girder transporting trolley 7 passes through the guide pulley 6 and then rotates the pulley to the original position to continuously control the arrangement form and the tension direction of the steel wire rope 8.
The embodiment also provides a dragging method for the bridge with the large curvature radius, which is characterized in that: the method comprises the following steps:
s1, providing the traction system for the bridge with the large curvature radius;
s2, installing a motor 1, a reduction gearbox 2 and a slow-motion winch 3 on a winch support 9, adjusting the initial position of a girder transporting trolley 7, installing a steel wire rope 8 on a rope seat, tensioning the steel wire rope 8 along a girder transporting trolley track 4, and hoisting a steel box girder 10 onto the girder transporting trolley 7 by using a crane;
s3, starting the motor 1, transmitting power to the slow-motion winch 3 through the reduction gearbox 2, driving the steel wire rope 8 through rotation of the drum of the slow-motion winch 3, and tensioning and arranging the steel wire rope 8 along the track 4 direction of the girder transporting trolley through transverse restraint of the guide pulley 6;
s4, preparing to start transportation, opening a bolt of the first guide pulley 6, and rotating the pulley by 90 degrees to facilitate the passing of the trolley;
s5, the steel wire ropes 8 are used for pulling the girder transporting trolley 7 along the parallel track direction through the transverse constraint of the guide pulleys 6, meanwhile, the traveling wheel sets 16 provide the girder transporting trolley 7 with the capability of steering along the curved track, and the girder transporting trolley 7 carries the steel box girder 10 to the position shown. At the moment, the first guide pulley 6 is closed, and the second guide pulley 6 is opened to enable the trolley to continue to pass;
s6, the girder transporting trolley 7 and the steel box girder 41 move to the position of the expected bridge position along the girder transporting trolley track 4, and one segment of steel box girder is transported.
For the erection of steel box girders with different curvatures and sizes, the girder transporting trolley track 4 can be adjusted according to different bridge types, the girder transporting trolley 7 can be adjusted according to the width of the transported steel box girders, and a group of two trolleys can also transport the large-width steel box girders simultaneously.
Claims (7)
1. A traction system for a large radius of curvature bridge, characterized by: the trolley is arranged on a transverse distribution beam, motors, reduction boxes and slow-moving windlass are respectively arranged at two ends of the trolley, the motors drive the slow-moving windlass through the reduction boxes, the trolley is arranged on the trolley, the trolley comprises a frame, travelling wheel sets are respectively connected at two ends of the frame, the travelling wheel sets comprise a bogie, a rotating shaft is arranged on the bogie, two ends of the rotating shaft are respectively matched with the bogie through bearings, the lower end of the rotating shaft is connected with a travelling wheel seat, travelling wheels are arranged on the travelling wheel seat, a rope seat is further connected to the frame, a steel wire rope is arranged on the rope seat and connected with the slow-moving windlass, guide pulleys are arranged on the transverse distribution beam and connected with the transverse distribution beam, and the steel wire ropes wound on the two sides of the trolley are guided through the guide pulleys.
2. The towing system as claimed in claim 1, wherein: the bogie is connected with a flange plate fixed on the frame.
3. The towing system as claimed in claim 2, wherein: the frame comprises longitudinal beams and transverse beams, wherein the two ends of the longitudinal beams are respectively connected with the transverse beams, flange plates are connected to the corners of the longitudinal beams, longitudinal ribs are further connected between the two transverse beams, and transverse ribs are further connected between the two longitudinal beams.
4. A traction system according to claim 3, wherein: the rope seat is arranged on the cross beam, and a steel wire rope is arranged on the rope seat.
5. The towing system as claimed in claim 1, wherein: and a groove is arranged in the middle of the travelling wheel and used for preventing the trolley from derailing.
6. The towing system as claimed in claim 1, wherein: the guide pulley comprises a pulley steering seat, a pulley seat and a pulley, wherein the pulley is arranged on the pulley seat, the pulley seat is fixed on the pulley steering seat through a rotating shaft and a bolt, and the pulley steering seat is fixed on a transverse distribution beam.
7. A method for hauling a bridge having a large radius of curvature, comprising: the method comprises the following steps:
s1, providing a traction system for a large radius of curvature bridge as claimed in any one of claims 1 to 6;
s2, installing a motor, a reduction gearbox and a slow-motion winch on a winch support, adjusting the initial position of a girder transporting trolley, installing a steel wire rope on a rope seat, tensioning the steel wire rope along a girder transporting trolley track, and hoisting a steel box girder onto the girder transporting trolley;
s3, starting a motor, transmitting power to a slow-motion winch through a reduction gearbox, driving a steel wire rope through rotation of a drum of the slow-motion winch, and tensioning the steel wire rope along the track direction of the girder transporting trolley through transverse constraint of a guide pulley;
s4, starting transportation, when the girder transporting trolley approaches to a guide pulley through which the girder transporting trolley passes, pulling out a bolt of the guide pulley to rotate the guide pulley by 90 degrees, avoiding interference between a girder transporting trolley rope seat and the guide pulley, and rotating the pulley to the original position after the girder transporting trolley integrally passes through the pulley to continuously control the arrangement form and the tension direction of the steel wire rope;
s5, the girder transporting trolley and the steel box girder move to the position of the expected bridge position along the girder transporting trolley track 4, and transportation of one segment of the steel box girder is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148743.3A CN107869112B (en) | 2017-11-17 | 2017-11-17 | Traction system and method for bridge with large curvature radius |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148743.3A CN107869112B (en) | 2017-11-17 | 2017-11-17 | Traction system and method for bridge with large curvature radius |
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| Publication Number | Publication Date |
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| CN107869112A CN107869112A (en) | 2018-04-03 |
| CN107869112B true CN107869112B (en) | 2023-10-31 |
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| CN201711148743.3A Active CN107869112B (en) | 2017-11-17 | 2017-11-17 | Traction system and method for bridge with large curvature radius |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518604A (en) * | 2018-07-23 | 2019-03-26 | 中铁重工有限公司 | One kind being used for deep camber steel box-girder push construction method |
| CN114808741B (en) * | 2022-05-27 | 2024-04-23 | 甘肃博睿交通重型装备制造有限公司 | Transfer method for corrugated web steel box-concrete composite beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2492910A1 (en) * | 2004-03-12 | 2005-09-12 | Transol Corporation | Trolley with tractor drive for use in curved enclosed tracks and system including the same |
| CN101220580A (en) * | 2007-12-04 | 2008-07-16 | 中铁大桥局股份有限公司 | Portrait multi-point continuously dragging construction method for trussed steel beam |
| CN203174512U (en) * | 2013-03-05 | 2013-09-04 | 中铁二十一局集团有限公司 | Steel truss girder dragging construction intelligent measuring and controlling system |
| CN103410093A (en) * | 2013-07-03 | 2013-11-27 | 中交二公局第四工程有限公司 | Reverse dragging device for construction of dragging large-span steel braced girder |
| CN103669229A (en) * | 2014-01-04 | 2014-03-26 | 中铁二十五局集团第二工程有限公司 | Device for preventing arch frame from rolling over in dragging process |
| CN103924529A (en) * | 2014-04-28 | 2014-07-16 | 中铁十局集团建筑工程有限公司 | Rolling drag device and construction method thereof |
| CN106526644A (en) * | 2016-10-10 | 2017-03-22 | 上海联适导航技术有限公司 | Method of calculating relative angle variation between carrier parts |
-
2017
- 2017-11-17 CN CN201711148743.3A patent/CN107869112B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2492910A1 (en) * | 2004-03-12 | 2005-09-12 | Transol Corporation | Trolley with tractor drive for use in curved enclosed tracks and system including the same |
| CN101220580A (en) * | 2007-12-04 | 2008-07-16 | 中铁大桥局股份有限公司 | Portrait multi-point continuously dragging construction method for trussed steel beam |
| CN203174512U (en) * | 2013-03-05 | 2013-09-04 | 中铁二十一局集团有限公司 | Steel truss girder dragging construction intelligent measuring and controlling system |
| CN103410093A (en) * | 2013-07-03 | 2013-11-27 | 中交二公局第四工程有限公司 | Reverse dragging device for construction of dragging large-span steel braced girder |
| CN103669229A (en) * | 2014-01-04 | 2014-03-26 | 中铁二十五局集团第二工程有限公司 | Device for preventing arch frame from rolling over in dragging process |
| CN103924529A (en) * | 2014-04-28 | 2014-07-16 | 中铁十局集团建筑工程有限公司 | Rolling drag device and construction method thereof |
| CN106526644A (en) * | 2016-10-10 | 2017-03-22 | 上海联适导航技术有限公司 | Method of calculating relative angle variation between carrier parts |
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| CN107869112A (en) | 2018-04-03 |
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