CN110626957A - Method for installing cable crane - Google Patents

Method for installing cable crane Download PDF

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Publication number
CN110626957A
CN110626957A CN201910933979.0A CN201910933979A CN110626957A CN 110626957 A CN110626957 A CN 110626957A CN 201910933979 A CN201910933979 A CN 201910933979A CN 110626957 A CN110626957 A CN 110626957A
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CN
China
Prior art keywords
lifting
cable
travelling
load
main cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910933979.0A
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Chinese (zh)
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CN110626957B (en
Inventor
路国梁
陈宗辉
陶俊
韦正平
陈军洋
罗佐乐
刘建国
黄子健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHINA RAILWAY MAJOR BRIDGE BUREAU SIXTH ENGINEERING Co Ltd
Original Assignee
CHINA RAILWAY MAJOR BRIDGE BUREAU SIXTH ENGINEERING Co Ltd
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Application filed by CHINA RAILWAY MAJOR BRIDGE BUREAU SIXTH ENGINEERING Co Ltd filed Critical CHINA RAILWAY MAJOR BRIDGE BUREAU SIXTH ENGINEERING Co Ltd
Priority to CN201910933979.0A priority Critical patent/CN110626957B/en
Publication of CN110626957A publication Critical patent/CN110626957A/en
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Publication of CN110626957B publication Critical patent/CN110626957B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C11/00Trolleys or crabs, e.g. operating above runways
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/04Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C21/00Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/14Trolley or crane travel drives
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention discloses a cable crane installation method, which comprises the following steps: assembling a load beam and a traveling mechanism; two tower top door frames are symmetrically arranged on two sides of the top end of the tower column in the transverse bridge direction; a lifting device and a transverse moving device are arranged on the tower top door frame, and the load beam and the traveling mechanism are lifted to the upper part of the main cable through the lifting device; then, the position of the travelling mechanism is adjusted through the traversing device and the lifting device, so that the travelling mechanism is borne on the main cable; and the lifting devices on the two tower top door frames synchronously lift the middle truss to the position between the two load beams, so that the middle truss and the load beams are installed. The method for installing the cable crane saves the air installation time of the load beam and the travelling mechanism and improves the installation efficiency of the cable crane.

Description

Method for installing cable crane
Technical Field
The invention relates to the technical field of bridge construction, in particular to a method for installing a cable crane.
Background
The cable crane is an important device for erecting the steel beam of the suspension bridge, and the installation efficiency of the cable crane is directly related to the erection period of the steel beam of the suspension bridge. Generally, the suspension bridge cable crane is installed by separately hoisting the travelling device, the load beam and the middle truss, but the hoisting frequency is more, so that the air matching time of each component is greatly increased, and the installation efficiency of the cable crane is reduced. In addition, in the installation process of the cable crane, the installation accuracy requirements of the walking device and the load beam and the installation accuracy of the load beam and the middle truss are high, but the installation process is aerial work, so that unstable factors such as wind blowing and the like are more in the installation process, the assembly difficulty of each component is large, long-time aerial assembly work is caused, the long-time stress of the winch is also caused, the damage of the braking device is large, and the risk of the assembly work of each component is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the installation method of the cable crane, which can improve the installation efficiency of the cable crane.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a cable crane mounting method includes the following steps;
assembling a load beam and a traveling mechanism;
a first lifting point, a third lifting point and a second lifting point are sequentially arranged on the load beam from the inner side to the outer side along the transverse bridge direction;
two tower top door frames are symmetrically arranged on two sides of the top end of the tower column in the transverse bridge direction;
a lifting device and a transverse moving device are installed on the tower top door frame, the lifting device comprises a first lifting hook and a second lifting hook, and the first lifting hook and the second lifting hook are respectively hung at a first lifting point and a second lifting point after passing through the transverse moving device;
lifting the load beam and the travelling mechanism to the upper part of the main cable;
the position of the travelling mechanism is adjusted through the transverse moving device and the lifting device, so that the travelling mechanism is borne on the main cable;
the second lifting hook is taken down and then hung on a third lifting point, and the first lifting hook is taken down and then hung on the middle truss;
and the lifting devices on the two tower top door frames synchronously lift the middle truss to the position between the two load beams, so that the middle truss and the load beams are installed.
On the basis of the technical scheme, the position of the travelling mechanism is adjusted by the transverse moving device and the lifting device so that the travelling mechanism is borne on the main cable, and the method specifically comprises the following steps:
the transverse moving device drives the traveling mechanism to transversely move to the direction right above the main cable along the transverse bridge direction towards the main cable;
the lifting device lowers the travelling mechanism and enables the travelling mechanism to be borne on the main cable.
On the basis of the technical scheme, the process that the lifting device lowers the travelling mechanism further comprises the following steps:
and adjusting the relative position of the travelling mechanism and the main cable to enable the axial direction of the travelling mechanism to be parallel to the central axis of the main cable.
On the basis of the technical scheme, the travelling mechanism is borne on the main cable and then is hung before the third hoisting point after the second lifting hook is taken down, and the method further comprises the following steps:
and adjusting the position of the travelling mechanism on the main cable to enable the travelling mechanism to be abutted against the cable clamp on the main cable.
On the basis of the technical scheme, the bottom of the travelling mechanism is provided with a hoop, and the hoop holds the main cable tightly.
On the basis of the technical scheme, the bottom of the travelling mechanism is provided with a bearing block, the main cable is provided with a stop block, the stop block is abutted against a cable clamp on the main cable, and the stop block is abutted against the bearing block.
On the basis of the technical scheme, the middle truss is provided with the guide plate, the guide plate is provided with a guide groove, the load beam is provided with a guide block matched with the guide groove, and the guide block is arranged in the guide groove in a sliding manner.
On the basis of the technical scheme, the middle truss and the load bearing beam are fixedly connected through a pin shaft.
On the basis of the technical scheme, the lifting device comprises two lifting mechanisms, each lifting mechanism comprises a winch, a steel wire rope and a pulley block, the winches are connected with one ends of the steel wire ropes, the other ends of the steel wire ropes of the two lifting mechanisms respectively bypass the two pulley blocks and are respectively connected with the first lifting hook and the second lifting hook, the two pulley blocks are all arranged on the transverse moving device, and the transverse moving device is used for driving the two pulley blocks to move along the transverse bridge direction.
On the basis of the technical scheme, the transverse moving device comprises a guide rail, a guide pulley and a driver, wherein the guide pulley is arranged on the guide rail, the two pulley block groups are arranged on the guide pulley, the driver is connected with the guide pulley, and the driver is used for driving the guide pulley to move on the guide rail along the transverse bridge direction.
Compared with the prior art, the invention has the advantages that:
(1) according to the installation method of the cable crane, the load beam and the traveling mechanism are assembled into a whole, the load beam and the traveling mechanism are lifted together through the lifting device and the transverse moving device arranged on the tower top gantry, and then the subsequent middle truss is installed, so that the installation time of the cable crane is shortened, and the installation efficiency of the cable crane is improved.
(2) The invention can reduce the installation time of the load beam and the walking mechanism in high altitude, not only can avoid the influence of high altitude environment, but also can reduce the load time of the lifting device and avoid the damage to the structure of the lifting device caused by overlong stress time of the lifting device.
Drawings
Fig. 1 is a longitudinal bridge schematic view of a cable crane installation method according to an embodiment of the present invention;
FIG. 2 is a schematic cross-bridge illustration of a method of installing a cable crane according to an embodiment of the present invention;
FIG. 3 is a schematic view of the lowering of a load beam and a traveling mechanism of the installation method of the cable crane according to the embodiment of the present invention;
fig. 4 is a schematic view illustrating hoisting of an intermediate truss in the installation method of the cable crane according to the embodiment of the present invention;
fig. 5 is a schematic view illustrating installation of an intermediate truss in a method for installing a cable crane according to an embodiment of the present invention;
in the figure: 1. a tower top portal; 2. a lifting device; 20. a winch; 21. a wire rope; 22. a pulley block; 23. a first hook; 24. a second hook; 3. a traversing device; 30. a guide rail; 31. a guide pulley; 4. a main cable; 5. a load beam; 51. a first hoisting point; 52. a second hoisting point; 53. a third hoisting point; 6. a traveling mechanism; 60. hooping; 7. and (4) a middle truss.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 5, an embodiment of the present invention provides a method for installing a cable crane, including the following steps:
the load beam 5 and the traveling mechanism 6 are assembled, the load beam 5 and the traveling mechanism 6 are installed together to form a whole, the load beam 5 and the traveling mechanism 6 are prevented from being installed in the air, and the high-altitude installation time of the load beam 5 and the traveling mechanism 6 is shortened.
A first lifting point 51, a third lifting point 53 and a second lifting point 52 are sequentially arranged on the load-bearing beam 5 from the inner side to the outer side along the transverse bridge direction from the side close to the central line of the bridge;
two tower top door frames 1 are symmetrically arranged on two sides of the top end of the tower column in the transverse bridge direction; a lifting device 2 and a transverse moving device 3 are arranged on the tower top gantry 1, the lifting device 2 comprises a first lifting hook 23 and a second lifting hook 24, and the first lifting hook 23 and the second lifting hook 24 are respectively hung at a first lifting point 51 and a second lifting point 52 after passing through the transverse moving device 3;
the load beam 5 and the traveling mechanism 6 are lifted to the upper part of the main cable 4 by the lifting device 2; the traversing device 3 drives the traveling mechanism 6 to traverse to the direction of the main cable 4 along the transverse bridge direction to the position right above the main cable 4; then the travelling mechanism 6 is lowered through the lifting device 2 and the travelling mechanism 6 is supported on the main cable 4,
because main rope 4 is whole not to be the straight line form of level, so bear on main rope 4 simultaneously in order to guarantee running gear 6 is whole, so in the in-process of running gear 6 is transferred to hoisting device 2, still need adjust the relative position of running gear 6 and main rope 4 through supplementary lifting device or set up the guide chain between load beam 5 and running gear 6, make the axial of running gear 6 and the central axis of main rope 4 parallel, whole bear on main rope 4 simultaneously when can making running gear 6 transfer, the positioning accuracy when having guaranteed that running gear 6 transfers on main rope 4. After the travelling mechanism 6 is borne on the main cable 4, the position of the travelling mechanism 6 on the main cable 4 needs to be adjusted, so that the travelling mechanism 6 is abutted to a cable clamp on the main cable 4, and the travelling mechanism 6 is prevented from moving or sliding down along the main cable 4 to influence subsequent installation.
The second hook 24 is taken down and then hung at the third hanging point 53, the positions and the stability of the load beam 5 and the traveling mechanism 6 on the main cable 4 are ensured through the lifting device 2, the traveling mechanism 6 and the load beam 5 keep balance on the main cable 4, and then the first hook 23 is taken down and then hung on the middle truss 7.
Synchronously hoisting the middle truss 7 to the two load-bearing beams 5 through the first lifting hooks 23 of the lifting devices 2 on the two tower top door frames 1, and installing the load-bearing beams 5 and the middle truss 7 through pin shafts to complete the installation of the middle truss 7 and the load-bearing beams 5.
Referring to fig. 2 and 3, the bottom of the traveling mechanism 6 is provided with an anchor ear 60, and the anchor ear 60 holds the main rope 4 tightly to prevent the traveling mechanism 6 from moving.
In this embodiment, preferably, the bottom of the traveling mechanism 6 is provided with a bearing block, the bearing block is arranged between the anchor ear 60 and the main cable 4, the main cable 4 is provided with a stop block, the stop block abuts against a cable clamp on the main cable 4, and meanwhile, the stop block abuts against the bearing block, the traveling mechanism can be prevented from moving and sliding down along the main cable 4 through the bearing block and the stop block, so as to avoid influencing the installation of the subsequent middle truss 7, meanwhile, the stop blocks can be arranged in plurality through the arrangement of the main cable 4, and the relative positions of the two traveling mechanisms 6 installed on the two main cables 4 can be respectively adjusted through the arrangement of the stop blocks.
In this embodiment, preferably, the middle truss 7 is provided with a guide plate, the guide plate is provided with a guide groove, the load beam 5 is provided with a guide block matched with the guide groove, and the guide block is arranged in the guide groove in a sliding manner, so that the middle truss 7 can be lifted in the process of avoiding high-altitude strong wind from affecting the installation of the load beam 5 and the middle truss 7.
In this embodiment, preferably, the upper and lower ends of the load beam 5 and the middle truss 7 are both provided with an ear plate, before the load beam 5 and the middle truss 7 are installed, one end of the pin is installed on the ear plate at the lower end of the middle truss 7, when the middle truss 7 is lifted to the installation height required by the load beam 5, the other end of the pin is installed on the ear plate of the load beam 5, and then the upper parts of the load beam 5 and the middle truss 7 are installed through the pin, so that the installation time of the middle truss 7 and the load beam 5 can be reduced.
In this embodiment, preferably, the lifting device 2 includes two lifting mechanisms, each lifting mechanism includes a winch 20, a steel wire rope 21 and a pulley block 22, the winch 20 is connected to one end of the steel wire rope 21, the other ends of the steel wire ropes 21 of the two lifting mechanisms respectively bypass the two pulley blocks 22 and are respectively connected to the first hook 23 and the second hook 24, the two winches 20 respectively control the first hook 23 and the second hook 24 to lift synchronously or asynchronously, and meanwhile, the load of the lifting device 2 is also reduced.
In this embodiment, preferably, the traverse device includes a guide rail 30, a guide pulley 31 and a driver, the guide pulley 31 is disposed on the guide rail 30, the two pulley blocks 22 are disposed on the guide pulley 31, the driver and the guide pulley 31 can be connected by finish rolling deformed steel bars, and the driver is configured to drive the guide pulley 31 to move on the guide rail 30 along the transverse bridge direction, so as to facilitate the lifted load beam 5 and the travelling mechanism 6 to move along the transverse bridge direction.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims (10)

1. A cable crane mounting method is characterized by comprising the following steps;
assembling a load beam (5) and a travelling mechanism (6);
a first lifting point (51), a third lifting point (53) and a second lifting point (52) are sequentially arranged on the load beam (5) from the inner side to the outer side along the transverse bridge direction;
two tower top door frames (1) are symmetrically arranged on two sides of the top end of the tower column in the transverse bridge direction respectively;
a lifting device (2) and a transverse moving device (3) are installed on the tower top gantry (1), the lifting device (2) comprises a first lifting hook (23) and a second lifting hook (24), and the first lifting hook (23) and the second lifting hook (24) are respectively hung at a first lifting point (51) and a second lifting point (52) after being wound by the transverse moving device (3);
lifting the load beam (5) and the travelling mechanism (6) to be above the main cable (4);
the position of the travelling mechanism (6) is adjusted through the transverse moving device (3) and the lifting device (2), so that the travelling mechanism (6) is borne on the main cable (4);
the second lifting hook (24) is taken down and then hung at a third lifting point (53), and the first lifting hook (23) is taken down and then hung at the middle truss (7);
and the lifting devices (2) on the two tower top door frames (1) synchronously lift the middle truss (7) to the position between the two load-bearing beams (5) to complete the installation of the middle truss (7) and the load-bearing beams (5).
2. A cable crane installation method according to claim 1, wherein the travelling mechanism (6) is positionally adjusted by the traversing device (3) and the hoisting device (2) so that the travelling mechanism (6) bears on the main cable (4), comprising the steps of:
the transverse moving device (3) drives the traveling mechanism (6) to transversely move to the direction of the main cable (4) along the transverse bridge direction to the direction right above the main cable (4);
the lifting device (2) lowers the travelling mechanism (6) and enables the travelling mechanism (6) to be borne on the main cable (4).
3. The cable crane installation method of claim 2, wherein the step of lowering the running gear (6) by the lifting device (2) further comprises the steps of:
and adjusting the relative position of the travelling mechanism (6) and the main cable (4) to enable the axial direction of the travelling mechanism (6) to be parallel to the central axis of the main cable (4).
4. A method of installing a cable crane according to claim 1, wherein the step of removing the second hook (24) and suspending the travelling mechanism (6) from the main cable (4) before the third suspension point (53) further comprises the steps of:
and adjusting the position of the travelling mechanism (6) on the main cable (4) to ensure that the travelling mechanism (6) is abutted against the cable clamp on the main cable (4).
5. The cable crane installation method of claim 1, wherein the bottom of the traveling mechanism (6) is provided with a hoop (60), and the hoop (60) holds the main cable (4).
6. The cable crane installation method according to claim 5, wherein a bearing block is provided at the bottom of the traveling mechanism (6), a stopper is provided on the main cable (4), the stopper abuts against a cable clamp on the main cable (4), and the stopper abuts against the bearing block.
7. The cable crane installation method of claim 1, wherein the intermediate truss (7) is provided with a guide plate having a guide groove, and the load beam (5) is provided with a guide block adapted to the guide groove for sliding in the guide groove.
8. The cable hoist installation method of claim 1,
the middle truss (7) and the load beam (5) are fixedly connected through a pin shaft.
9. The cable crane installation method of claim 1, wherein the hoisting device (2) comprises two hoisting mechanisms, the hoisting mechanisms comprise a hoist (20), a wire rope (21) and pulley blocks (22), the hoist (20) is connected to one end of the wire rope (21), the other ends of the wire rope (21) of the two hoisting mechanisms respectively bypass the pulley blocks (22) and are respectively connected to the first hook (23) and the second hook (24), the pulley blocks (22) are assembled on the traversing device (3), and the traversing device (3) is used for driving the pulley blocks (22) to move along the transverse bridge direction.
10. The cable crane installation method of claim 9, wherein the traverse device comprises a guide rail (30), a guide block (31), and a driver, wherein the guide block (31) is disposed on the guide rail (30), the two pulley blocks (22) are assembled on the guide block (31), the driver is connected to the guide block (31), and the driver is used for driving the guide block (31) to move on the guide rail (30) along the transverse bridge direction.
CN201910933979.0A 2019-09-29 2019-09-29 Method for installing cable crane Active CN110626957B (en)

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CN110626957B CN110626957B (en) 2020-12-01

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