CN214882988U

CN214882988U - Aerial rotary lifting appliance for lifting and mounting steel box girder of suspension bridge

Info

Publication number: CN214882988U
Application number: CN202120267924.3U
Authority: CN
Inventors: 王先锋; 赵高锦; 任骑新; 罗超; 韩泓泳
Original assignee: Sinohydro Bureau 8 Co Ltd
Current assignee: Sinohydro Bureau 8 Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-11-26
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a suspension bridge steel case roof beam lifts by crane installation with aerial rotatory hoist, including main gallows, rotation axis and the assistant gallows that is used for hanging dress steel case roof beam, be equipped with on the main gallows along the glide machanism that the suspension cable slided, on rotation axis rotation located main gallows, assistant gallows hangs the bottom of locating the rotation axis, is equipped with the rotary driving mechanism who is used for driving the rotation axis positive and negative rotation on the main gallows. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge has the advantages of simple structure, safe and reliable operation and convenient operation, and can improve the construction efficiency and reduce the construction cost.

Description

Aerial rotary lifting appliance for lifting and mounting steel box girder of suspension bridge

Technical Field

The utility model relates to a mechanical device technical field for transmitting lifting force especially relates to a suspension bridge steel case roof beam lifts by crane installation with aerial rotatory hoist.

Background

With the continuous progress of science and technology, bridge construction is developed rapidly, particularly since the twenty-first century, bridge construction industry is developed vigorously, and large-span bridges spanning inland rivers and large canyons are inexhaustible, wherein suspension bridges account for the vast majority, and the development trend continues to be continued for a long time in the future, and the installation of the stiffening girder of the steel box girder of the suspension bridge is a problem which needs to be overcome all the time.

Under navigation conditions such as sea, rivers and the like, the steel box girder stiffening girder units can be lifted and installed by adopting a cross-cable crane method, under non-navigation conditions of mountainous canyons and rivers, the girder section units can be installed by adopting a cable crane method, a bridge deck crane method or a rail cable method and the like, the method has respective advantages and disadvantages, and is also suitable for different construction environments.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a simple structure, operation safe and reliable, convenient operation, can improve the efficiency of construction and reduce construction cost's suspension bridge steel case roof beam and lift by crane installation with aerial rotatory hoist.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the aerial rotary lifting appliance comprises a main lifting frame, a rotating shaft and an auxiliary lifting frame for hanging a steel box girder, wherein a sliding mechanism sliding along a suspension cable is arranged on the main lifting frame, the rotating shaft is rotatably arranged on the main lifting frame, the auxiliary lifting frame is arranged at the bottom end of the rotating shaft, and a rotary driving mechanism for driving the rotating shaft to rotate positively and negatively is arranged on the main lifting frame.

As a further improvement of the above technical solution:

the rotation driving mechanism comprises two winches and two inhaul cables, rotation dowel bars are symmetrically arranged on the peripheral wall of the rotating shaft, the two winches are fixed on the main hanging bracket and are respectively positioned on two sides of the rotating shaft, one winch is connected with one rotation dowel bar through one inhaul cable, and the other winch is connected with the other rotation dowel bar through the other inhaul cable.

The rotating shaft penetrates through the middle of the main hanging bracket, and the rotating dowel bar is arranged at the top end of the rotating shaft.

The main hanging bracket is provided with a mobile power supply, and the winch is electrically connected with the mobile power supply.

The sliding mechanism comprises a sling and a sliding frame, the sliding frame is provided with a pulley sliding along the sling, and the main hanging bracket is hung on the sliding frame through the sling.

The lifting lugs are arranged on the two sides of the main hanging bracket, and the sling is connected with the lifting lugs.

The main hanging bracket comprises a middle beam and two parallel distribution beams, the middle beam is fixed between the middle parts of the two distribution beams, the rotating shaft is rotatably arranged on the middle beam, and the sliding mechanism is arranged at two ends of the two distribution beams.

The auxiliary hanger comprises an outer frame and a reinforcing beam arranged in the middle of the outer frame, at least two hanging points which are arranged at intervals are arranged on two sides of the outer frame, and each hanging point is connected with the rotating shaft through a pull rope.

The bottom of rotation axis is equipped with the couple, the stay cord is located on the couple.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a suspension bridge steel case roof beam lifts by crane installation with aerial rotatory hoist, including main gallows, rotation axis and the assistant gallows that is used for hanging dress steel case roof beam, be equipped with on the main gallows along the glide machanism that the suspension cable slided, on the rotation axis rotates and locates main gallows, assistant gallows hangs the bottom of locating the rotation axis, is equipped with the rotary driving mechanism who is used for driving the rotation axis positive and negative rotation on the main gallows. When the steel box girder erection device is used, the sliding mechanism is arranged on the suspension cable in a sliding mode, the steel box girder is hung on the auxiliary hanging bracket, the sliding mechanism can drive the aerial rotary lifting appliance to integrally move along the suspension cable, the steel box girder is conveyed to a construction position, and then the rotary driving mechanism drives the rotary shaft to drive the steel box girder to rotate, so that the rotary shaft rotates to a mounting position in the air. The lifting appliance can meet the requirement of horizontal rotation of the steel box girder in the air, namely, when the steel box girder is installed, the opposite-bank side girder unit is lifted by the lifting appliance through a cable crane, the steel box girder is moved to an installation position after horizontal rotation, and then falls down and is installed after rotation return, so that the quick installation, the electric wire arrangement reduction, the process simplification, the investment reduction, the construction period shortening and the safe and efficient construction can be realized. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge has the advantages of simple structure, safe and reliable operation and convenient operation, and can improve the construction efficiency and reduce the construction cost.

Drawings

Fig. 1 is the main view structure schematic diagram of the aerial rotary lifting appliance for lifting and mounting the steel box girder of the suspension bridge of the utility model.

Fig. 2 is the utility model discloses suspension bridge steel box girder lifts by crane installation with aerial rotatory hoist look sideways at the schematic structure drawing.

Fig. 3 is a schematic view of the overhead structure of the overhead rotary hanger for lifting and mounting the steel box girder of the suspension bridge of the present invention.

The reference numerals in the figures denote:

1. a main hanger; 11. a center sill; 12. a distribution beam; 2. a rotating shaft; 21. rotating the dowel bar; 22. hooking; 3. a secondary hanger; 31. an outer frame; 32. a reinforcing beam; 33. hoisting points; 34. pulling a rope; 4. a steel box girder; 5. a suspension cable; 6. a coasting mechanism; 61. a sling; 62. a skid frame; 621. a pulley; 7. a rotation driving mechanism; 71. a winch; 72. a cable; 8. lifting lugs; 9. and (5) moving the power supply.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Fig. 1 to fig. 3 show the utility model discloses suspension bridge steel box girder lifts by crane an embodiment of installation with aerial rotatory hoist, this suspension bridge steel box girder lifts by crane installation with aerial rotatory hoist and includes main gallows 1, rotation axis 2 and the auxiliary gallows 3 that is used for hanging dress steel box girder 4, be equipped with the glide machanism 6 that slides along suspension cable 5 on the main gallows 1, rotation axis 2 rotates and locates on the main gallows 1, auxiliary gallows 3 hangs and locates the bottom of rotation axis 2, be equipped with the rotary driving mechanism 7 that is used for driving rotation axis 2 positive and negative rotation on the main gallows 1. In use, as shown in fig. 1, the slide mechanism 6 is slidably mounted on the suspension cable 5, the steel box girder 4 is hung on the sub-hanger 3, the slide mechanism 6 can move along the suspension cable 5 with the aerial rotary hanger to transport the steel box girder 4 to the construction position, and then the rotary drive mechanism 7 drives the rotary shaft 2 to rotate with the steel box girder 4, so that the rotary shaft 2 rotates in the air to the installation position. The lifting appliance can meet the requirement of horizontal rotation of the steel box girder 4 in the air, namely when the steel box girder 4 is installed, the opposite-bank side beam unit is lifted by a cable crane through the lifting appliance, the steel box girder 4 is moved to the installation position after horizontal rotation, and then falls down and is installed after rotation return, so that the quick installation, the electric wire arrangement reduction, the process simplification, the investment reduction, the construction period shortening and the safe and efficient construction can be realized. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge has the advantages of simple structure, safe and reliable operation and convenient operation, and can improve the construction efficiency and reduce the construction cost.

In this embodiment, as shown in fig. 1, the rotation driving mechanism 7 includes two winches 71 and two cables 72, the rotation force transmission rods 21 are symmetrically disposed on the peripheral wall of the rotating shaft 2, the two winches 71 are fixed on the main hanger 1 and located on two sides of the rotating shaft 2, one winch 71 is connected to one rotation force transmission rod 21 through one cable 72, and the other winch 71 is connected to the other rotation force transmission rod 21 through the other cable 72. Two hoist engines 71 cooperate the operation, can make the 0 ~ 180 and 0 ~ 180 of reversal of rotation axis 2 corotation, that is to say, as long as a hoist engine 71 rolling cable 72, another hoist engine 71 releases cable 72 in step, can make the rotation axis 2 rotatory, this rotation driving mechanism 7 simple structure, convenient operation. Specifically, the rotary shaft 2 penetrates the middle of the main hanger 1, and the rotary force transmission rod 21 is provided at the tip end of the rotary shaft 2.

In this embodiment, the main hanger 1 is provided with a portable power source 9, and the winch 71 is electrically connected to the portable power source 9. The winch 71 is powered by the mobile power supply 9, and quick installation can be realized.

In this embodiment, as shown in fig. 1, the skid mechanism 6 includes a suspension wire 61 and a skid 62, a pulley 621 that slides along the suspension wire 5 is provided on the skid 62, and the main hanger 1 is hung on the skid 62 by the suspension wire 61. Lifting lugs 8 are arranged on two sides of the main hanging bracket 1, and the sling 61 is connected with the lifting lugs 8.

In this embodiment, as shown in fig. 1 and 2, the main hanger 1 includes a middle beam 11 and two parallel distribution beams 12, the middle beam 11 is fixed between the middle portions of the two distribution beams 12, the rotating shaft 2 is rotatably disposed on the middle beam 11, and the skids 6 are disposed at both ends of the two distribution beams 12. Specifically, the rotary shaft 2 penetrates through the middle of the intermediate beam 11 and is coupled to the intermediate beam 11 through a bearing. Lifting lugs 8 are arranged at two ends of the two distribution beams 12, and each lifting lug 8 is respectively hung on the sliding frame 62 through a sling 61.

In the present embodiment, as shown in fig. 3, the sub-hanger 3 includes an outer frame 31 and a reinforcing beam 32 provided in the middle of the outer frame 31, at least two hanging points 33 are provided on both sides of the outer frame 31, and each hanging point 33 is connected to the rotating shaft 2 by a pull rope 34. Specifically, as shown in fig. 2, the bottom end of the rotating shaft 2 is provided with a hook 22, and a pull rope 34 is provided on the hook 22.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a suspension bridge steel box girder lifts by crane installation with rotatory hoist in air which characterized in that: the steel box girder hanging device comprises a main hanging bracket (1), a rotating shaft (2) and an auxiliary hanging bracket (3) used for hanging and loading a steel box girder (4), wherein a sliding mechanism (6) sliding along a suspension cable (5) is arranged on the main hanging bracket (1), the rotating shaft (2) is rotatably arranged on the main hanging bracket (1), the auxiliary hanging bracket (3) is hung at the bottom end of the rotating shaft (2), and a rotary driving mechanism (7) used for driving the rotating shaft (2) to rotate positively and negatively is arranged on the main hanging bracket (1).

2. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to claim 1, which is characterized in that: the rotary driving mechanism (7) comprises two winches (71) and two inhaul cables (72), rotary force transmission rods (21) are symmetrically arranged on the peripheral wall of the rotary shaft (2), the two winches (71) are fixed on the main hanging bracket (1) and are respectively located on two sides of the rotary shaft (2), one winch (71) is connected with one rotary force transmission rod (21) through one inhaul cable (72), and the other winch (71) is connected with the other rotary force transmission rod (21) through the other inhaul cable (72).

3. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to claim 2, wherein: the rotating shaft (2) penetrates through the middle of the main hanging bracket (1), and the rotating dowel bar (21) is arranged at the top end of the rotating shaft (2).

4. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to claim 2, wherein: the main hanger (1) is provided with a mobile power supply (9), and the winch (71) is electrically connected with the mobile power supply (9).

5. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to claim 1, which is characterized in that: the sliding mechanism (6) comprises a sling (61) and a sliding frame (62), a pulley (621) sliding along the sling (5) is arranged on the sliding frame (62), and the main hanging bracket (1) is hung on the sliding frame (62) through the sling (61).

6. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to claim 5, wherein: both sides of the main hanger (1) are provided with lifting lugs (8), and the sling (61) is connected with the lifting lugs (8).

7. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to any one of claims 1 to 6, wherein: the main hanger (1) comprises a middle beam (11) and two parallel distribution beams (12), the middle beam (11) is fixed between the middle parts of the two distribution beams (12), the rotating shaft (2) is rotatably arranged on the middle beam (11), and the sliding mechanisms (6) are arranged at two ends of the two distribution beams (12).

8. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to any one of claims 1 to 6, wherein: the auxiliary hanger (3) comprises an outer frame (31) and a reinforcing beam (32) arranged in the middle of the outer frame (31), at least two hanging points (33) arranged at intervals are arranged on two sides of the outer frame (31), and each hanging point (33) is connected with the rotating shaft (2) through a pull rope (34).

9. The aerial rotary lifting appliance for lifting and installing the steel box girder of the suspension bridge according to claim 8, wherein: the bottom of rotation axis (2) is equipped with couple (22), stay cord (34) are located on couple (22).