CN216920054U

CN216920054U - Long heavy cable hanging installation device for multipoint hanging of underbridge expansion cable

Info

Publication number: CN216920054U
Application number: CN202220503565.1U
Authority: CN
Inventors: 李冬; 汪永枫; 刘柳; 卿宇航; 张晋硕
Original assignee: China Railway 12th Bureau Group Co Ltd; First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Current assignee: China Railway 12th Bureau Group Co Ltd; First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-07-08
Anticipated expiration: 2032-03-10

Abstract

The utility model belongs to the technical field of construction of stay cables of a bridge tower of a cable-stayed bridge, and particularly relates to a long heavy cable hanging and installing device for multipoint hanging of a span cable under a bridge. Including the cable-stay bridge pylon, be provided with cable-stay bridge case roof beam on the cable-stay bridge pylon, the setting is at the bridge floor pier hoist engine of cable-stay bridge case roof beam bridge floor, preceding cantilever hoist engine and back cantilever hoist engine, bridge floor pier hoist engine sets up in the bridge floor left side, preceding cantilever hoist engine and back cantilever hoist engine set up the middle part at the bridge floor, cable-stay bridge case roof beam right side installation is fixed with bridge side fixed pulley, cable-stay bridge case roof beam top is provided with horizontal cantilever gallows and pulls wire rope in the tower, the cable-stay bridge pylon outside is provided with the tower crane. The utility model not only makes full use of the space of the bridge floor, but also ensures that the hoisting weight does not exceed the allowable hoisting weight of the equipment, thereby not only accelerating the construction speed, but also ensuring the construction safety. The investment of large-scale crane equipment for loading long and heavy bridges every time is avoided, and the construction cost is reduced.

Description

Long heavy cable hanging installation device for multipoint hanging of underbridge expansion cable

Technical Field

The utility model belongs to the technical field of construction of stay cables of a bridge tower of a cable-stayed bridge, and particularly relates to a long heavy cable hanging and installing device for multipoint hanging of a span cable under a bridge.

Background

Along with the growing development of bridge construction, large-span cable-stay bridge has obtained more and more application, and the suspension cable is that the cable-stay bridge heavily bears the pulling force and as the main structural component who supports of girder, and traditional suspension cable scheme is along with the suspension cable diameter is bigger and bigger, and tower end suspension cable length and height are also bigger and bigger, will expose the tower end and hang required traction force can be bigger and bigger when establishing, and it is not enough to use conventional equipment to appear upwards traction force easily, perhaps opens shortcomings such as cable space not enough. When the stay cable is too long and too heavy, the stay cable on the whole can be lifted by a lifting device with larger tonnage, the actual application on site is not met, and the traction force required by the cable hanging at the tower end is larger, so that the allowable lifting range of the tower crane is exceeded, and safety accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a long and heavy cable hanging and installing device for hanging a span cable under a bridge at multiple points, aiming at solving the problem that the space of the bridge floor of a long and heavy stayed cable is insufficient and avoiding the problem of unsafety caused by the heavy cable lifted by the overload of a tower crane.

The utility model adopts the following technical scheme: the utility model provides a long heavy cable that exhibition cable multiple spot was hung under bridge hangs and establishes installation device, including the cable-stay bridge pylon, be provided with cable-stay bridge case roof beam on the cable-stay bridge pylon, the setting is at the bridge floor pier hoist engine of cable-stay bridge case roof beam bridge face, preceding cantilever hoist engine and back cantilever hoist engine, bridge floor pier hoist engine sets up in the bridge floor left side, preceding cantilever hoist engine and back cantilever hoist engine set up the middle part at the bridge floor, cable-stay bridge case roof beam right side installation is fixed with bridge side fixed pulley, cable-stay bridge case roof beam top is provided with horizontal cantilever gallows and pulls wire rope in the tower, the cable-stay bridge pylon outside is provided with the tower crane.

Furthermore, the transverse cantilever hanger is arranged on a tie beam of the cable-stayed bridge tower.

Furthermore, the transverse cantilever hanging bracket comprises an I-shaped steel beam fixed on the tie beam, and a front cantilever support fixed pulley and a rear cantilever support fixed pulley are arranged at two ends of the I-shaped steel beam.

Further, the I-shaped steel beam is welded and fixed with the embedded steel plate in the tie beam.

Compared with the prior art, the utility model decomposes the overlong stay cable into curves in a mode of forming a plurality of lifting points by using the mode of alternately lifting the length of the residual cable to the beam surface by the side lifting frame with large and small mileage of the upper cross beam, thereby reducing the single lifting weight, fully utilizing the space of the bridge deck, ensuring that the lifting weight does not exceed the allowable lifting weight of the equipment, accelerating the construction speed and ensuring the construction safety. The investment of large-scale crane equipment for loading long and heavy bridges every time is avoided, and the construction cost is reduced.

Drawings

FIG. 1 is a schematic view of the tower end upper bridge cable of the present invention;

FIG. 2 is a schematic view of a beam cantilever crane hoisting stay cable of the present invention;

FIG. 3 is a schematic view of the aerial tower end suspension of the present invention;

FIG. 4 is a schematic transverse cross-sectional view of a beam cantilever hanger of the present invention;

FIG. 5 is a schematic view of alternate lifting of a stay cable by a stay cable beam cantilever hanger according to the present invention;

FIG. 6 is a schematic view of the unfolding of the bridge deck of the upper bridge of the long and heavy stay cables of the utility model;

FIG. 7 is a schematic view of a lowering stay cable of the present invention;

in the figure, 1 is a cable-stayed bridge tower, 2 is a cable-stayed bridge box girder, 3 is a bridge deck pier winch, 4 is a bridge side fixed pulley, 5 is a traction steel wire rope, 6 is a stay cable, 7 is a cable transport vehicle, 8 is a transverse cantilever hanger, 9 is a tower crane, 10 is a front cantilever winch, 11 is a rear cantilever winch, 12 is a traction steel wire rope in the tower, 13 is a front cantilever support fixed pulley, 14 is a rear cantilever support fixed pulley, and 15 is a bridge deck cable-expanding trolley.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a long heavy cable that exhibition cable multiple spot was hung under bridge hangs and establishes installation device, including cable-stay bridge pylon 1, be provided with cable-stay bridge case roof beam 2 on the cable-stay bridge pylon 1, set up the bridge floor pier hoist engine 3 at 2 bridge floors of cable-stay bridge case roof beam, front cantilever hoist engine 10 and back cantilever hoist engine 11, bridge floor pier hoist engine 3 sets up in the bridge floor left side, front cantilever hoist engine 10 and back cantilever hoist engine 11 set up the middle part at the bridge floor, 2 right sides of cable-stay bridge case roof beam installation are fixed with bridge side

fixed pulley

4, 2 tops of cable-stay bridge case roof beam are provided with horizontal cantilever gallows 8 and pull wire rope 12 in the tower, 1 outside of cable-stay bridge pylon is provided with tower crane 9.

The transverse cantilever crane 8 is installed on a tie beam of the cable-stayed bridge tower 1. The transverse cantilever hanger 8 comprises an I-shaped steel beam fixed on the tie beam, and a front cantilever support fixed pulley 13 and a rear cantilever support fixed pulley 14 are arranged at two ends of the I-shaped steel beam. And the I-shaped steel beam is welded and fixed with the embedded steel plate in the tie beam.

As shown in fig. 1, the cable transportation vehicle 7 transports the overweight and overlong stay cable 6 to one side of the cable-stayed bridge tower 1, the winch 3 at the bridge deck pier is connected with the anchor head at one end of the stay cable 6 through the traction steel wire rope 5, and the lifting direction of the stay cable 5 is changed from vertical to upward to the horizontal direction of the bridge deck through the fixed pulley 4 at the bridge side.

As shown in fig. 2, the side close to the hoist 3 is lifted by using the crane tower 9, the front cantilever hoist 10 slowly lifts the middle section of the bridge surface position of the stay cable 5 by using the front cantilever support fixed pulley 13 of the transverse cantilever hanger 8, as shown in fig. 3 and fig. 4, the pull wire rope 12 in the tower is connected with the anchor at the tower end of the stay cable 5 to start lifting the anchor head of the stay cable 5, the rear cantilever hoist 11 is connected with the tail end of the beam surface section of the stay cable 5 by the rear cantilever support fixed pulley 14, the rear cantilever hoist 11 starts to slowly lift the stay cable upwards, the front cantilever hoist 10 slowly lowers the stay cable while slowly pulling the on-vehicle stay cable, and the pull wire rope 12 in the tower and the crane 9 start to slowly lift the stay cable to the pre-buried hole position at the tower end.

As shown in fig. 5, after the rear boom winch 11 lifts the stay cable to a certain height, the front boom winch 10 lowers the stay cable to a certain height, the connection between the front boom winch 10 and the stay cable 5 is released, the front boom winch 10 is connected to the stay cable 5 at the position of the fixed pulley 4 on the bridge side, at this time, the rear boom winch 11 starts lowering the stay cable 5, the front boom winch 10 starts lifting the stay cable, and simultaneously, the steel wire rope 12 and the tower crane 9 are pulled in the tower to continue to slowly lift the stay cable to the position of the pre-buried hole at the tower end, and the front boom winch 10 and the rear boom winch 11 repeatedly operate by simulating the principle that two hands pull the cable until the anchor head position of the stay cable 5 is fixed on the cable guide pipe of the pre-buried hole at the tower end.

As shown in fig. 6, the stay cable 5 is deployed in the air in a curved line by fully utilizing the space of the bridge deck, the anchor head at the other end of the stay cable 5 is lifted to the beam surface, and then slowly lowered to the cable deployment trolley 15 on which the beam surface is placed, the stay cable 5 is deployed on the beam surface along the length direction of the beam by using the beam end 16 winch until the anchor head at the other end of the stay cable 5 is pulled into the cable guide pipe at the beam end, and is mounted on the suspended and filled beam segment by using the crane, so that the whole cable deployment work of the long and heavy stay cable 5 is completed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a long heavy cable that span cable multiple spot was hung under bridge hangs establishes installation device which characterized in that: including cable-stay bridge tower (1), be provided with cable-stay bridge case roof beam (2) on cable-stay bridge tower (1), set up bridge floor pier hoist engine (3) at cable-stay bridge case roof beam (2) bridge floor, preceding cantilever hoist engine (10) and back cantilever hoist engine (11), bridge floor pier hoist engine (3) set up in the bridge floor left side, preceding cantilever hoist engine (10) and back cantilever hoist engine (11) set up the middle part at the bridge floor, cable-stay bridge case roof beam (2) right side installation is fixed with bridge side fixed pulley (4), cable-stay bridge case roof beam (2) top is provided with horizontal cantilever gallows (8) and tower internal traction wire rope (12), the cable-stay bridge tower (1) outside is provided with tower crane (9).

2. The multi-point hanging long heavy cable hanging installation device for the underbridge spreading cable according to claim 1, which is characterized in that: the transverse cantilever hanger (8) is arranged on a tie beam of the cable-stayed bridge tower (1).

3. The multi-point hanging long heavy cable hanging installation device for the under-bridge spreading cable according to claim 2, characterized in that: the transverse cantilever hanger (8) comprises an I-shaped steel beam fixed on the tie beam, and a front cantilever support fixed pulley (13) and a rear cantilever support fixed pulley (14) are arranged at two ends of the I-shaped steel beam.

4. The long heavy cable hanging and installing device for multipoint hanging of the under-bridge spread cable according to claim 3, characterized in that: the I-shaped steel beam is welded and fixed with the embedded steel plate in the tie beam.