CN111622121A - Reeving method for hoisting single-tower cable - Google Patents
Reeving method for hoisting single-tower cable Download PDFInfo
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- CN111622121A CN111622121A CN202010494537.3A CN202010494537A CN111622121A CN 111622121 A CN111622121 A CN 111622121A CN 202010494537 A CN202010494537 A CN 202010494537A CN 111622121 A CN111622121 A CN 111622121A
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- cable
- hoisting
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- river
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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
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Structural Engineering (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention provides a reeving method for hoisting a single tower cable, which comprises the following steps: 1) arranging a tower crane on one side of a river bank, and bringing the guide rope to the opposite bank of the river by a ferry; 2) the head end of the guide rope is pulled to the mountain top of the opposite bank of the river by a first winch; the tail end of the guide rope is connected with a traction rope; 3) the first winch continues to pull the traction rope, the traction rope is driven to cross the valley, and then the traction rope is driven to return to one side of the river bank through the guide rope after passing through the steering wheel of the first ground anchor on the mountain top; the traction cable is attached with a main cable through a rope clamp; 4) the traction cable drives the main cable to penetrate through a steering wheel of a second ground anchor arranged on one side of the river bank, turn over a cable saddle on the top of the tower crane, penetrate into the crown block, cross the valley and reach the first ground anchor at the top of the mountain to be fixed. The single-tower cable hoisting method can be applied to complex terrains which are difficult to reach for traffic on one side of a valley.
Description
Technical Field
The invention relates to a construction method, in particular to a cable threading method for hoisting a cable.
Background
For a single-tower cable plain crane with one shore being a combination of a hanging hook and a tower, the other shore is in a complex terrain and has a steep mountain terrain, and when traffic cannot reach, a cable penetrating process without a tower rock anchor is adopted, which cannot be realized by the prior art.
The existing reeving process construction has the defects that the reeving construction speed of the main rope with large diameter and heavy weight is low, the safety construction guarantee rate is low, and the non-uniformity of the tightening degree cannot be effectively controlled and adjusted when several main ropes (bearing ropes) form a group and work simultaneously.
The traction cable is unreasonably arranged for traction routing, and the reduction of traction force and the adjustment of speed cannot be realized.
For the arrangement of the crane cable routing, the number of the pulley blocks is too small, the tension of the crane cable is too large, and the arrangement of the cable tail is different, so that the lifting hook cannot be lowered in the no-load process, and the like.
Disclosure of Invention
The invention aims to solve the main technical problem of providing a reeving method for hoisting a single tower cable, which can be applied to a complex terrain with traffic not easy to reach on one side of a valley.
In order to solve the technical problem, the invention provides a reeving method for hoisting a single tower cable, which comprises the following steps:
1) arranging a tower crane on one side of a river bank, and bringing the guide rope to the opposite bank of the river by a ferry;
2) the head end of the guide rope is pulled to the mountain top of the opposite bank of the river by a first winch; the tail end of the guide rope is connected with a traction rope;
3) the first winch continues to pull the traction rope, the traction rope is driven to cross the valley, and then the traction rope is driven to return to one side of the river bank through the guide rope after passing through the steering wheel of the first ground anchor on the mountain top; the traction cable is attached with a main cable through a rope clamp;
4) the traction cable drives the main cable to penetrate through a steering wheel of a second ground anchor arranged on one side of the river bank, turn over a cable saddle on the top of the tower crane, penetrate through the crown block, cross a valley and reach a first ground anchor on the top of a mountain to be fixed;
5) a plurality of main cables are repeatedly installed, and each main cable is fixedly connected with two adjacent main cables through a cable clamp;
6) installing a tightening pulley on a main cable on one side of a river bank and performing tightening operation to adjust the sag of the main cable;
7) installing a circulating cable, wherein the circulating cable passes through a second winch, and two ends of the circulating cable are connected with the crown block after passing through a first movable pulley respectively;
8) and installing a hoisting cable, wherein one end of the hoisting cable is connected with the third winch, and the other end of the hoisting cable is steered through the fixed pulley and then is anchored on the hoisting cable counter weight through the second movable pulley.
In a preferred embodiment: and two ends of the circulating cable respectively pass through the 4 first movable pulleys.
In a preferred embodiment: the hoisting cable passes through 16 second movable pulleys.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention provides a single tower cable hoisting method, which is characterized in that a guide rope and a temporary traction rope are used for threading, so that the construction difficulty is reduced, the safety and reliability of construction are ensured, and the construction speed is accelerated.
2. The invention provides a single-tower cable hoisting method, wherein 6 main cables are mutually communicated during installation of the main cables, and a group of main cables are tightened together by using a tightening pulley on a left bank, so that the stress uniformity of each main cable is ensured, and the safety accident caused by overlarge stress of a single main cable during construction is avoided.
3. The invention provides a single tower cable hoisting method, wherein a traction cable is arranged by adopting a '4' walking line, so that the moving stability is ensured, and the traction tension of a winch is reduced.
4. The invention provides a single-tower cable hoisting method, a hoisting cable is arranged along a '16' line, the hoisting stability is greatly improved, and the hoisting force of a winch is reduced. The hoisting cable is arranged in a threading way by adopting a flexible threading method, so that the hoisting cable is prevented from being stirred.
5. The invention provides a single tower cable hoisting method, which is characterized in that a bearing cable of a hoisting cable is installed, so that the horizontal section of the hoisting cable cannot bulge.
6. The invention provides a single tower cable hoisting method, which anchors the rope head of a hoisting rope on the counterweight of the hoisting rope, and solves the problem of the descending of the no-load hoisting rope.
Drawings
FIG. 1 is a view showing the overall layout of a cable crane according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the installation of the endless cable according to the preferred embodiment of the present invention;
FIG. 3 is an elevation view of the installation of the endless cable in the preferred embodiment of the invention;
FIG. 4 is a schematic illustration of the installation of a hoist cable in accordance with a preferred embodiment of the present invention;
fig. 5 is a general layout of cables in a preferred embodiment of the invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1-5, the present invention provides a single tower cable hoisting method, comprising the following steps:
1) arranging a tower crane 1 on one side of a river bank, and bringing a guide rope to the opposite bank of the river by a ferry;
2) the head end of the guide rope is pulled to the mountain top of the opposite bank of the river by a first winch; the tail end of the guide rope is connected with a traction rope;
3) the first winch continues to pull the traction rope, the traction rope is driven to cross the valley, and then the traction rope is driven to return to one side of the river bank through the guide rope after passing through the steering wheel of the first ground anchor 2 on the mountain top; the main rope 3 is attached to the traction rope through a rope clamp;
4) the traction cable drives the main cable 3 to pass through a steering wheel of a second ground anchor 4 arranged on one side of a river bank, turn over a cable saddle 5 on the top of the tower crane 1, penetrate through a crown block 6, cross a valley and reach a first ground anchor 2 on the top of a mountain for fixing;
5) a plurality of main ropes 3 are repeatedly installed, and each main rope 3 is fixedly connected with two adjacent main ropes 3 through rope clamps;
6) installing a tightening pulley on the main cable 3 on one side of the river bank and performing tightening operation to adjust the sag of the main cable 3;
7) installing a circulating cable 7, wherein the circulating cable 7 passes through a second winch 8, and both ends of the circulating cable are respectively connected with a crown block 6 after passing through 4 first movable pulleys 9; the rope penetrating mode of 'walking 4' enables the overhead travelling crane 6 to longitudinally move for 0.25 circle every time the second winch 8 rotates for one circle, so that the movement is more stable, and the traction force used by the second winch 8 can be reduced by 75%.
7) And installing a hoisting cable 10, wherein one end of the hoisting cable 10 is connected with a third winch 11, and the other end of the hoisting cable 10 is steered by a fixed pulley and then anchored on a hoisting cable counterweight by 16 second movable pulleys 12. The 16-running rope penetrating mode enables the overhead travelling crane 6 to longitudinally move for 0.0625 circle every time the third winch 11 rotates for one circle, so that the hoisting is more stable and the precision is higher, but the traction force used by the winch is reduced by 93.75 percent. Meanwhile, when the sports car moves too far away from the cable tower, in order to prevent redundant ropes from stirring and bulging when the horizontal section of the hoisting cable 10 is too long, cable bearing devices are installed at intervals of 10m and are connected through phi 8 thin steel wire ropes. When the sports car moves to the opposite bank of the river, the distance between the cable bearing devices is opened, and the hoisting cable 10 is supported. When the sports car runs back on the same day, the cable bearing devices are gathered together under the action of self weight, and the longitudinal movement of the sports car is not influenced. Meanwhile, in order to ensure that the lifting hook can fall to the ground when no load exists, the rope head of the hoisting rope 10 is anchored on the counterweight of the hoisting rope 10, so that the hoisting rope 10 is lighter.
The above examples are provided only for illustrating the present invention and are not intended to limit the present invention. Changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the claims of the present invention as long as they are in accordance with the technical spirit of the present invention.
Claims (3)
1. A reeving method for hoisting a single tower cable is characterized by comprising the following steps:
1) arranging a tower crane on one side of a river bank, and bringing the guide rope to the opposite bank of the river by a ferry;
2) the head end of the guide rope is pulled to the mountain top of the opposite bank of the river by a first winch; the tail end of the guide rope is connected with a traction rope;
3) the first winch continues to pull the traction rope, the traction rope is driven to cross the valley, and then the traction rope is driven to return to one side of the river bank through the guide rope after passing through the steering wheel of the first ground anchor on the mountain top; the traction cable is attached with a main cable through a rope clamp;
4) the traction cable drives the main cable to penetrate through a steering wheel of a second ground anchor arranged on one side of the river bank, turn over a cable saddle on the top of the tower crane, penetrate through the crown block, cross a valley and reach a first ground anchor on the top of a mountain to be fixed;
5) a plurality of main cables are repeatedly installed, and each main cable is fixedly connected with two adjacent main cables through a cable clamp;
6) installing a tightening pulley on a main cable on one side of a river bank and performing tightening operation to adjust the sag of the main cable;
7) installing a circulating cable, wherein the circulating cable passes through a second winch, and two ends of the circulating cable are connected with the crown block after passing through a first movable pulley respectively;
8) and installing a hoisting cable, wherein one end of the hoisting cable is connected with the third winch, and the other end of the hoisting cable is steered through the fixed pulley and then is anchored on the hoisting cable counter weight through the second movable pulley.
2. The reeving method for single tower cable hoisting according to claim 1, wherein: and two ends of the circulating cable respectively pass through the 4 first movable pulleys.
3. The reeving method for single tower cable hoisting according to claim 1, wherein: the hoisting cable passes through 16 second movable pulleys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494537.3A CN111622121A (en) | 2020-06-03 | 2020-06-03 | Reeving method for hoisting single-tower cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494537.3A CN111622121A (en) | 2020-06-03 | 2020-06-03 | Reeving method for hoisting single-tower cable |
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| CN111622121A true CN111622121A (en) | 2020-09-04 |
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| CN202010494537.3A Pending CN111622121A (en) | 2020-06-03 | 2020-06-03 | Reeving method for hoisting single-tower cable |
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Citations (12)
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|---|---|---|---|---|
| DE3071519D1 (en) * | 1979-06-29 | 1986-05-07 | Walter Freller | Construction element adjustable in length |
| JPS6429507A (en) * | 1987-07-24 | 1989-01-31 | Ishikawajima Harima Heavy Ind | Method of supporting catwalk for suspension bridge cable erection in method of air spinning construction |
| RU2309216C2 (en) * | 2005-09-30 | 2007-10-27 | Открытое акционерное общество ОАО "Институт по изысканиям и проектированию мостовых переходов"-"Гипротрансмост" | Bridge span structure protrusion device |
| CN101224856A (en) * | 2007-12-20 | 2008-07-23 | 中铁大桥局股份有限公司 | Long-span load-carrying cable lifting machine and mounting method therefor |
| CN101323419A (en) * | 2008-04-23 | 2008-12-17 | 中铁十三局集团有限公司 | Non-tower cable crane |
| CN101684639A (en) * | 2009-08-28 | 2010-03-31 | 中国第一冶金建设有限责任公司 | Process method for construction of steel-structured suspension bridge and light type cable carrying crane specially used in same |
| CN102808382A (en) * | 2012-08-28 | 2012-12-05 | 中铁七局集团第五工程有限公司 | Method for constructing arch bridge in V-shaped valley without tower |
| CN105565176A (en) * | 2016-02-03 | 2016-05-11 | 中铁港航局集团有限公司 | Single-tower asymmetric cable crane |
| CN106638326A (en) * | 2017-01-19 | 2017-05-10 | 中铁十六局集团第二工程有限公司 | Construction system for hoisting cable tower-free bridge cable and construction method |
| CN106672786A (en) * | 2017-03-20 | 2017-05-17 | 福建农林大学 | Wheel penetrated counter-weight light travelling car for logging in mountainous region |
| CN208088097U (en) * | 2018-03-08 | 2018-11-13 | 中交武汉港湾工程设计研究院有限公司 | A kind of three-tower suspension bridge erection of main beam constructing structure |
| CN109853394A (en) * | 2019-03-25 | 2019-06-07 | 安徽省路港工程有限责任公司 | Arch bridge cable hoisting tower button integrated construction engineering method |
-
2020
- 2020-06-03 CN CN202010494537.3A patent/CN111622121A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3071519D1 (en) * | 1979-06-29 | 1986-05-07 | Walter Freller | Construction element adjustable in length |
| JPS6429507A (en) * | 1987-07-24 | 1989-01-31 | Ishikawajima Harima Heavy Ind | Method of supporting catwalk for suspension bridge cable erection in method of air spinning construction |
| RU2309216C2 (en) * | 2005-09-30 | 2007-10-27 | Открытое акционерное общество ОАО "Институт по изысканиям и проектированию мостовых переходов"-"Гипротрансмост" | Bridge span structure protrusion device |
| CN101224856A (en) * | 2007-12-20 | 2008-07-23 | 中铁大桥局股份有限公司 | Long-span load-carrying cable lifting machine and mounting method therefor |
| CN101323419A (en) * | 2008-04-23 | 2008-12-17 | 中铁十三局集团有限公司 | Non-tower cable crane |
| CN101684639A (en) * | 2009-08-28 | 2010-03-31 | 中国第一冶金建设有限责任公司 | Process method for construction of steel-structured suspension bridge and light type cable carrying crane specially used in same |
| CN102808382A (en) * | 2012-08-28 | 2012-12-05 | 中铁七局集团第五工程有限公司 | Method for constructing arch bridge in V-shaped valley without tower |
| CN105565176A (en) * | 2016-02-03 | 2016-05-11 | 中铁港航局集团有限公司 | Single-tower asymmetric cable crane |
| CN106638326A (en) * | 2017-01-19 | 2017-05-10 | 中铁十六局集团第二工程有限公司 | Construction system for hoisting cable tower-free bridge cable and construction method |
| CN106672786A (en) * | 2017-03-20 | 2017-05-17 | 福建农林大学 | Wheel penetrated counter-weight light travelling car for logging in mountainous region |
| CN208088097U (en) * | 2018-03-08 | 2018-11-13 | 中交武汉港湾工程设计研究院有限公司 | A kind of three-tower suspension bridge erection of main beam constructing structure |
| CN109853394A (en) * | 2019-03-25 | 2019-06-07 | 安徽省路港工程有限责任公司 | Arch bridge cable hoisting tower button integrated construction engineering method |
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Application publication date: 20200904 |