CN210886924U - Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area - Google Patents
Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area Download PDFInfo
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- CN210886924U CN210886924U CN201921424204.2U CN201921424204U CN210886924U CN 210886924 U CN210886924 U CN 210886924U CN 201921424204 U CN201921424204 U CN 201921424204U CN 210886924 U CN210886924 U CN 210886924U
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Abstract
The utility model provides an overhaul platform of a telescopic double-cable-plane cable-stayed bridge tower guy cable area, wherein a suspension operation platform is positioned between two guy cable planes; the telescopic operating platform is positioned in the suspension operating platform and can slide along a track in the suspension operating platform and extend out of the suspension operating platform; the lifting system comprises a portal frame, a lifter, a safety lock, a lifting rope and a tower top telescopic lifting point support, the portal frame is connected with the suspension operation platform, the lifter and the safety lock are installed on the portal frame, the tower top telescopic lifting point support is connected with the portal frame through the lifting rope, and the suspension operation platform and the telescopic operation platform can be lifted up and down under the driving of the lifter; the anti-falling device is fixed at the top end of the straight tower column. The utility model discloses an overhaul the platform when meetting barriers such as suspension cable, can avoid the barrier through flexible operation platform's retraction, be particularly useful for going on examining and maintaining the operation to two cable-plane cable-stay bridge pylon cable district.
Description
Technical Field
The utility model belongs to the technical field of the technique of bridge maintenance and specifically relates to an overhaul platform in retractable two-cable-side cable-stayed bridge pylon cable district.
Background
The cable-stayed bridge is widely applied to the field of bridge engineering due to attractive appearance, reasonable stress and larger spanning capacity. The tower column of the cable-stayed bridge is used as a main bearing component to bear various loads transmitted by a stay cable, and the tower column needs to be inspected and maintained due to structural safety requirements or coated and decorated due to landscape requirements in the operation process of the bridge.
For the stay cable surface, a plurality of stay cables are distributed up and down along the tower column, and the inclination angles of the stay cables are different, so that the problem of how to avoid the stay cables to overhaul the stay cable distribution area is difficult. A maintenance platform for a detachable straight tower column of a cable-stayed bridge (patent application number: CN 201521060708.2) proposes that a part of maintenance platform is disassembled to bypass a stay cable, but the operation of the mode is complex and the maintenance is carried out in high altitude, which seriously affects the maintenance efficiency. Therefore, it is necessary to develop a maintenance platform, which can meet the requirements of light weight, convenient operation, capability of realizing maintenance of the stay cable area of the tower column of the double-cable-plane cable-stayed bridge, no influence of obstacles such as stay cables and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an overhaul platform in retractable two-cable-side cable-stayed bridge pylon cable district can realize the maintenance to two-cable-side cable-stayed bridge pylon cable district and not receive the influence of obstacles such as suspension cable.
In order to achieve the above purpose, the technical solution of the present invention is as follows: the utility model provides a maintenance platform in two cable face cable-stay bridge tower cable district of retractable, its characterized in that, maintenance platform include:
the suspension operation platform is positioned between the two cable surfaces;
the telescopic operating platform is positioned in the suspension operating platform and can slide along a track in the suspension operating platform and extend out of the suspension operating platform;
the lifting system comprises a portal frame, a lifting machine, a safety lock, a lifting rope and a tower top telescopic lifting point support, wherein the portal frame is connected with the suspension operation platform, the lifting machine and the safety lock are installed on the portal frame, the tower top telescopic lifting point support is fixed on a tower top parapet, the tower top telescopic lifting point support is connected with the portal frame through the lifting rope, and the suspension operation platform and the telescopic operation platform are driven by the lifting machine to lift up and down;
when encountering obstacles such as a stay cable and the like in the lifting process, the telescopic operating platform can retract into the suspension operating platform along the track in the suspension operating platform, thereby avoiding the obstacles such as the stay cable and the like.
Further, overhaul the platform and still include anti-falling device, anti-falling device includes that one end is fixed at the personnel's safety rope on pylon top to and place the rope locking device who suspends in midair in operation platform, the rope locking device is used for linking to each other with personnel's safety belt in the operation platform that suspends in midair, and when operation platform goes up and down, the rope locking device slides along personnel's safety rope, when operation platform reachd the maintenance position, presses rope locking device switch, locks safety belt and personnel's safety rope.
Furthermore, the suspension operating platform and the telescopic operating platform are of truss structures formed by welding high-strength aluminum alloy.
Furthermore, two wall leaning wheels are installed at the bottom of the suspension operating platform close to the tower column surface, the wall leaning wheels are rubber wheels, and the wall leaning wheels can roll along the tower column surface in the lifting process of the operating platform.
Further, flexible operation platform is two parts about the terminal surface fence of the side of stretching out and the side fence of keeping away from the pylon divide into, and the mode that the hinge was passed through to the upper portion forms rotatable coupling with lower part down, when needing, can overturn the upper portion through the mode of hinge upset with lower part coincide to reduce the height that flexible operation platform passed between two suspension cables.
Further, the lifting rope comprises a working lifting rope and a safety lifting rope, the upper ends of the working lifting rope and the upper ends of the safety lifting rope are directly hung at the end part of the tower top telescopic lifting point support, the lower end of the working lifting rope is directly connected with a lifting machine on the portal frame, the lower end of the safety lifting rope penetrates through the safety lock to be connected with the portal frame, the working lifting rope bears stress during normal work, the safety lifting rope is retracted and released in a follow-up mode, when the working lifting rope is broken dangerously, the safety lifting rope begins to bear the stress, the safety lock is automatically started to brake, and the operation platform is prevented from continuing to descend.
The beneficial effects of the utility model reside in that:
1) the maintenance platform can realize full-coverage maintenance of a tower column cable area of the double-cable-plane cable-stayed bridge, and the stay cables can be avoided through the expansion and contraction of the operation platform when the operation platform encounters obstacles such as the stay cables.
2) When the telescopic hanging point support on the top of the tower is not used, the telescopic hanging point support can be retracted into the parapet wall, maintenance is facilitated, and the bridge landscape is not influenced.
3) The operation platform adopts the truss structure of high strength aluminum alloy material, has alleviateed operation platform's weight greatly, has effectively reduced the requirement to the lift capacity of lift system.
4) When the suspension operation platform and the lifting rope are not used, the suspension operation platform and the lifting rope can be placed in a storehouse, so that the suspension operation platform and the lifting rope are prevented from being exposed in an outdoor environment, and the service life is greatly prolonged.
5) During the maintenance construction, because the construction influence scope is little, it is little to bridge floor driving influence.
Drawings
Fig. 1 is a transverse bridge side view of an overhaul platform in a guy cable area of a tower column of a telescopic double-cable-plane cable-stayed bridge.
Fig. 2 is a side view of the maintenance platform in the tower stay area of the telescopic double-cable-plane cable-stayed bridge along the bridge.
FIG. 3 is a large panel A of FIG. 1.
Fig. 4 is a large panel B of fig. 2.
Fig. 5 is a schematic diagram of the end surface fence and the side fence of the telescopic operation platform in an overturning manner.
The figure includes: 1-suspension operation platform, 1.1-wall leaning wheel, 1.2-rail, 2-telescopic operation platform, 3.1-portal frame, 3.2-hoister, 3.3-safety lock, 3.4-lifting rope, 3.4.1-working lifting rope, 3.4.2-safety lifting rope, 3.5-tower top telescopic lifting point support, 4-anti-falling device, 4.1-personnel safety rope, 5-stay cable, 6-parapet wall and 7-tower column surface.
Detailed Description
The present invention will be further described with reference to the accompanying drawings 1 to 5 and examples.
Referring to fig. 1-4, an overhaul platform in retractable double-cable-side cable-stayed bridge tower cable district, it includes: a suspended operating platform 1, a telescopic operating platform 2 and a lifting system and fall-preventing device 4.
Referring to fig. 1, a suspended operations platform 1 is located between two guy-rope surfaces. Referring to fig. 3 and 4, the telescopic operation platform 2 is located in the suspended operation platform 1, and can slide along the track 1.2 in the suspended operation platform 1 and extend out of the suspended operation platform 1.
Referring to fig. 1-4, the lifting system comprises a portal frame 3.1, a lifting machine 3.2, a safety lock 3.3, a lifting rope 3.4 and a tower top telescopic lifting point support 3.5, the portal frame 3.1 is connected with a suspension operation platform 1, the lifting machine 3.2 and the safety lock 3.3 are installed on the portal frame 3.1, the tower top telescopic lifting point support 3.5 is fixed on a tower top parapet 6, the length of a tower column can be telescopically adjusted and extended, the lifting rope 3.4 is used for connecting the tower top telescopic lifting point support 3.5 with the portal frame 3.1, and the suspension operation platform 1 and the telescopic operation platform 2 are lifted up and down under the driving of the lifting machine 3.2.
Referring to fig. 1-3, anti-falling device 4 includes that one end is fixed at the personnel safety rope 4.1 on the top of the tower column to and place the rope locking device that suspends in midair the operation platform in, the rope locking device is used for linking to each other with personnel safety rope 4.1 suspending in midair the interior operating personnel's of operation platform safety belt, and when operation platform goes up and down, the rope locking device slides along personnel safety rope, when operation platform reachd the maintenance position, presses down the rope locking device switch, locks safety belt and personnel safety rope.
Referring to fig. 3 and 4, two wall-leaning wheels 1.1 are installed at the bottom of the suspension operating platform 1 close to the tower column surface, and the wall-leaning wheels 1.1 adopt rubber wheels and can roll along the tower column surface in the lifting process of the operating platform.
Referring to fig. 1 and 2, when encountering obstacles such as a stay cable 5 and the like during the lifting process, the telescopic operation platform 2 can retract into the suspension operation platform 1 along a track 1.2 in the suspension operation platform 1 so as to avoid the obstacles such as the stay cable 5 and the like.
Referring to fig. 5, the end surface fence of the telescopic operating platform 2 on the extending side and the side fence far away from the tower column adopt a hinge overturning mode to reduce the height of the telescopic operating platform penetrating through the two stay cables. The terminal surface fence of the side of stretching out and the side fence of keeping away from the pylon divide into two parts from top to bottom promptly, and the mode that the hinge was passed through to the upper portion forms rotatable coupling with lower part down, when needing, can overturn the upper portion through the mode of hinge upset to with lower part coincide to reduce the height that flexible operation platform passed between two suspension cables.
Referring to fig. 3, the lifting rope 3.4 includes a working lifting rope 3.4.1 and a safety lifting rope 3.4.2, the upper ends of the working lifting rope 3.4.1 and the safety lifting rope 3.4.2 are both directly hung at the end of the tower top telescopic lifting point support 3.5, the lower end of the working lifting rope 3.4.1 is directly connected with the elevator 3.2 on the portal frame 3.1, the lower end of the safety lifting rope 3.4.2 passes through the safety lock 3.3 to be connected with the portal frame 3.1, the working lifting rope bears the stress 3.4.1 during normal operation, the safety lifting rope 3.4.2 is retracted and released in a follow-up manner, when the working lifting rope 3.4.1 is broken dangerously, the safety lifting rope 3.4.2 begins to bear the stress, the safety lock 3.3 is automatically started to brake, and the operation platform is prevented from continuing to descend.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a maintenance platform in two cable face cable-stay bridge tower cable district of retractable, its characterized in that, maintenance platform include:
the suspension operation platform is positioned between the two cable surfaces;
the telescopic operating platform is positioned in the suspension operating platform and can slide along a track in the suspension operating platform and extend out of the suspension operating platform;
the lifting system comprises a portal frame, a lifting machine, a safety lock, a lifting rope and a tower top telescopic lifting point support, wherein the portal frame is connected with the suspension operation platform, the lifting machine and the safety lock are installed on the portal frame, the tower top telescopic lifting point support is fixed on a tower top parapet, the tower top telescopic lifting point support is connected with the portal frame through the lifting rope, and the suspension operation platform and the telescopic operation platform can be lifted up and down under the driving of the lifting machine;
when encountering obstacles such as a stay cable and the like in the lifting process, the telescopic operating platform can retract into the suspension operating platform along the track in the suspension operating platform, thereby avoiding the obstacles such as the stay cable and the like.
2. The maintenance platform of claim 1, wherein the maintenance platform further comprises a fall-prevention device, the fall-prevention device comprises a safety rope with one end fixed to the top end of the tower, and a rope locking device disposed in the suspension operation platform, the rope locking device is used for connecting the safety belt of the operator in the suspension operation platform with the safety rope.
3. The maintenance platform of telescopic double-cable-side cable-stayed bridge tower column cable area according to claim 1, characterized in that the suspension operation platform and the telescopic operation platform are truss structures welded by high-strength aluminum alloy.
4. The maintenance platform of the tower column bracing cable area of the telescopic double-cable-plane cable-stayed bridge according to claim 1, wherein the bottom of the suspension operating platform is provided with two wall leaning wheels near the tower column surface, the wall leaning wheels adopt rubber wheels and can roll along the tower column surface in the lifting process of the operating platform.
5. The maintenance platform of telescopic double-cable-side cable-stayed bridge tower bracing cable area according to claim 1, characterized in that the end fence of the telescopic operation platform on the extending side and the side fence far away from the tower are divided into an upper part and a lower part, and the upper part forms a rotatable connection with the lower part in a hinge mode.
6. The maintenance platform of claim 1, wherein the lifting rope comprises a working lifting rope and a safety lifting rope, the upper ends of the working lifting rope and the safety lifting rope are directly hung at the end of the tower top telescopic lifting point support, the lower end of the working lifting rope is directly connected with a hoist on the portal frame, and the lower end of the safety lifting rope passes through the safety lock and is connected with the portal frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424204.2U CN210886924U (en) | 2019-08-28 | 2019-08-28 | Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424204.2U CN210886924U (en) | 2019-08-28 | 2019-08-28 | Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area |
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| Publication Number | Publication Date |
|---|---|
| CN210886924U true CN210886924U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921424204.2U Active CN210886924U (en) | 2019-08-28 | 2019-08-28 | Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855644A (en) * | 2022-03-25 | 2022-08-05 | 浙江恒炜建设集团有限公司 | Bridge main tower structure convenient to maintain and construction method thereof |
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2019
- 2019-08-28 CN CN201921424204.2U patent/CN210886924U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855644A (en) * | 2022-03-25 | 2022-08-05 | 浙江恒炜建设集团有限公司 | Bridge main tower structure convenient to maintain and construction method thereof |
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