CN219195664U - Steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction - Google Patents

Abstract

The utility model discloses a steel arch lifting device suitable for horizontal splicing lifting and vertical rotating construction, which comprises a lifting tower arranged on a bridge deck and a lifting unit arranged at the top of the lifting tower, wherein the lifting unit comprises two lifting arms which are fixedly hung at two sides of the lifting tower through a connecting beam; the lifting arm comprises a hydraulic lifter movably connected to one end of the connecting beam and a lifting frame fixedly arranged on the hydraulic lifter; the lifting frame comprises a supporting frame connected with the top of the movable end of the hydraulic lifting device and a fixing frame arranged on the top of the supporting frame. The device utilizes self structure rationally to arrange the hoisting point, promotes the safe and reliable of process, and the hoisting unit has the fine setting function, is applicable to the horizontal splicing promotion of steel arch and erects the construction.

Description

Steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a steel arch lifting device suitable for horizontal splicing lifting and vertical rotation construction.

Background

The bridge construction is carried out by adopting the horizontal splicing lifting vertical rotation method, a large anchor ingot is omitted by adopting a relative rope crane or other lifting rotating bodies, the lifting pressure is directly transmitted by utilizing a rigid tie beam, the vertical rotation structure system is simple, the stress is clear and easy to monitor, the vertical rotation structure system has no influence on the stress of the bridge body structure, the using amount of a steel arch assembly bracket is greatly reduced, but the horizontal splicing lifting vertical rotation method has higher technical difficulty, and a separate lifting device is required to be additionally arranged to ensure the assembly precision and the welding precision.

The utility model patent with the application number of CN201010229149.9 discloses a steel bridge arch rib vertical rotation lifting installation method, wherein temporary portal towers are erected at hard foundations at the periphery of piers at the center lines of two arch ribs; the two arch ribs are arranged on the projection line of the horizontal rotation position in a sectional manner and are integrally assembled, the root parts of the two arch ribs are respectively arranged on the rotary twisting seats, and the end parts are respectively provided with anchor points; the top end of the portal tower is symmetrically hinged with a hydraulic lifter; one end of the lifting steel strand is connected with the hydraulic lifter, and the other end is connected with the arch rib anchor point; the hydraulic lifter is symmetrically loaded step by step, the two arch ribs rotate away from the ground, and the hydraulic lifter is stably and vertically rotated and lifted until the two arch ribs reach the design position; and (5) carrying out gap filling welding on the root parts of the arch ribs, installing connecting ropes of the arch ribs, and dismantling the hydraulic lifter and the portal tower frame. The advantages are that: the hydraulic lifting cable-stayed device is assembled and welded on the bridge deck on site, the quality is easy to ensure, the construction safety is ensured, the lifting load is effectively reduced by hydraulic lifting cable-stayed, and the large crane is not required to hoist; the requirement on the tower is low, and in the whole hoisting process, the two arch ribs are not integrally lifted off the ground all the time, so that the hoisting device is safe and reliable. However, the tower frame of the house is temporarily erected, and is still required to be dismantled later, namely, the tower frame is an independent lifting device, so that the construction period is delayed, and the construction cost is increased.

Disclosure of Invention

The utility model aims to provide a steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction, which solves the problems that the horizontal splicing lifting vertical rotation method is high in technical difficulty and a separate lifting device is required to be additionally arranged.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction comprises a lifting tower arranged on a bridge deck and a lifting unit arranged at the top of the lifting tower, wherein the lifting unit comprises two lifting arms which are fixedly hung on two sides of the lifting tower through a connecting beam;

the lifting arm comprises a hydraulic lifter movably connected to one end of the connecting beam and a lifting frame fixedly arranged on the hydraulic lifter;

the lifting frame comprises a supporting frame connected with the top of the movable end of the hydraulic lifting device and a fixing frame arranged on the top of the supporting frame.

Preferably, the main body structure of the lifting tower is a cuboid frame, the lifting tower comprises four upright posts, a plurality of quadrilateral frames arranged among the four upright posts at intervals and a plurality of diagonal braces obliquely arranged between any two adjacent quadrilateral frames, and bases connected with the bridge deck are arranged at the bottoms of the four upright posts.

Preferably, four diagonal braces are obliquely arranged between any two adjacent quadrilateral frames.

Preferably, support rods are arranged between two ends of the connecting beam and a quadrilateral frame arranged at the top of the lifting tower.

Preferably, the tops of the four upright posts are provided with a workbench, and the connecting beam is fixedly arranged in the middle of the workbench.

Preferably, the main structure of the support frame is trapezoid, and a plurality of transverse, longitudinal or inclined reinforcing beams are arranged in the support frame.

Preferably, the fixing frame overall structure is eight characters shape, and the fixing frame is including installing left side fixed beam, right side fixed beam and establishing the collet in the middle of left side fixed beam and right side fixed beam in the support frame main part, left side fixed beam one end and right side fixed beam one end all slope install in the support frame main part, the collet top be equipped with the cambered surface of steel arch looks adaptation.

Preferably, at least two vertex angles of the lifting tower are provided with cable ropes, and the cable ropes can be arranged on one side or two sides of the lifting tower.

Preferably, one end of the cable rope is fixed on the bridge deck and forms an included angle of 30-89 degrees with the bridge deck.

Preferably, a guard rail is arranged on the periphery of the workbench.

According to the utility model, the lifting unit is movably connected with the lifting tower, so that the fine adjustment function of the lifting unit in the lifting process can be realized, and the lifting tower is suitable for steel arch horizontal splicing lifting vertical rotation construction; utilize self rational in infrastructure to arrange the hoisting point, two hoisting units are fixed to hang at the promotion pylon top through a tie-beam, ensure to promote safe and reliable of process.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a view of the present utility model.

In the figure: 1. lifting the tower; 2. a lifting arm; 3. a connecting beam; 4. a work table; 5. a cable rope; 6. A steel arch; 7. a guard rail; 10. a column; 11. a quadrangular frame; 12. a diagonal brace; 13. a support rod; 20. a hydraulic lifter; 21. a lifting frame; 210. a support frame; 211. a left fixed beam; 212. a stiffening beam; 213. a right side fixed beam; 214. and (5) a bottom bracket.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

the steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction is shown in fig. 1 and 2, and comprises a lifting tower 1 arranged on a bridge deck and a lifting unit arranged at the top of the lifting tower 1, wherein the lifting unit comprises two lifting arms 2, the two lifting arms 2 are fixedly hung on two sides of the lifting tower 1 through a connecting beam 3, the lifting arms 2 comprise a hydraulic lifter 20 connected with one end of the connecting beam 3 through a pin shaft and a lifting frame 21 fixedly arranged on the hydraulic lifter 20 through a fastener, the lifting frame 21 comprises a supporting frame 210 connected with the movable end top of the hydraulic lifter 20 and a fixing frame fixedly arranged at the top of the supporting frame 210 through welding or the fastener, the lifting tower 1 is mainly in a cuboid frame, the lifting tower 1 comprises four upright posts 10, a plurality of quadrilateral frames 11 arranged among the four upright posts 10 at intervals and a plurality of diagonal rods 12 obliquely arranged between any two adjacent quadrilateral frames 11, four diagonal braces 12 are obliquely arranged between any two adjacent quadrilateral frames 11 through welding, supporting rods 13 are arranged between two ends of a connecting beam 3 and the quadrilateral frames 11 which are arranged at the top of the lifting tower 1 through welding means, a workbench 4 is arranged at the top of each of four upright posts 10, the connecting beam 3 is fixedly arranged at the middle part of the workbench 4 through fasteners, a protective fence 7 is arranged on the periphery of the workbench 4, in the example, the quadrilateral frames 11 are formed by welding round tubes, the diagonal braces 12 are welded between the adjacent quadrilateral frames 11 after the quadrilateral frames 11 are welded between the four upright posts 10, the diagonal braces 12 are also made of round tubes, the diameters of the four upright posts are 450mm, a base with the thickness of 20mm is arranged below each upright post through the fasteners, and the base is fixedly connected with a bridge deck through the fasteners.

The main structure of the support frame 210 is trapezoidal, a plurality of transverse, longitudinal or inclined stiffening beams 212 are arranged in the support frame 210 through welding, the whole structure of the fixing frame is splayed, the fixing frame comprises a left fixing beam 211, a right fixing beam 213 and a bottom bracket 214 arranged in the middle of the left fixing beam 211 and the right fixing beam 213, one end of the left fixing beam 211 and one end of the right fixing beam 213 are obliquely arranged in the main body of the support frame 210 through welding, the top of the bottom bracket 214 is provided with an arc surface matched with the steel arch 6, and the steel arch 6 is placed on the bottom bracket 214 and fixedly clamped through the left fixing beam 211 and the right fixing beam 213.

At least two apex angles department of promote pylon 1 is provided with cable rope 5, and cable rope 5 can set up in promotion pylon unilateral or two sides, and cable rope 5 one end is fixed on the bridge floor, and forms 30 ~ 89 contained angles with the bridge floor, in this example, cable rope specifically sets up two, and cable rope 5 and bridge floor contained angle are 33, and cable rope selects for use the wire rope that the diameter is 58mm can satisfy the construction demand.

The above embodiments are only a few descriptions of the inventive concept and implementation, and are not limited thereto, and the technical solutions without substantial transformation remain within the scope of protection under the inventive concept.

Claims (10)

1. The utility model provides a steel arch hoisting device suitable for horizontal splicing promotes erectly changes construction, includes and establishes promotion pylon (1) on the bridge floor and establishes the hoisting unit at promotion pylon (1) top, its characterized in that: the lifting unit comprises two lifting arms (2), and the two lifting arms (2) are fixedly hung on two sides of the lifting tower (1) through a connecting beam (3);

the lifting arm (2) comprises a hydraulic lifter (20) movably connected to one end of the connecting beam (3) and a lifting frame (21) fixedly arranged on the hydraulic lifter (20);

the lifting frame (21) comprises a supporting frame (210) connected with the top of the movable end of the hydraulic lifter (20) and a fixing frame arranged on the top of the supporting frame (210).

2. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 1, wherein: the main structure of the lifting tower (1) is a cuboid frame, the lifting tower (1) comprises four upright posts (10), a plurality of quadrilateral frames (11) which are arranged among the four upright posts (10) at intervals and a plurality of inclined stay bars (12) which are obliquely arranged among any two adjacent quadrilateral frames (11), and bases which are used for being connected with a bridge deck are arranged at the bottoms of the four upright posts (10).

3. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 2, wherein: four diagonal braces (12) are obliquely arranged between any two adjacent quadrilateral frames (11).

4. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 2, wherein: and supporting rods (13) are arranged between two ends of the connecting beam (3) and a quadrilateral frame (11) arranged at the top of the lifting tower (1).

5. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 4, wherein: the top of four stand (10) is equipped with workstation (4), and connecting beam (3) fixed mounting is in workstation (4) middle part.

6. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 1, wherein: the main structure of the support frame (210) is trapezoid, and a plurality of transverse, longitudinal or inclined reinforcing beams (212) are arranged inside the support frame (210).

7. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 1, wherein: the fixing frame overall structure is eight characters, and the fixing frame includes left side fixed beam (211) of installing on support frame (210) main part, right side fixed beam (213) and establishes collet (214) in the middle of left side fixed beam (211) and right side fixed beam (213), and left side fixed beam (211) one end and right side fixed beam (213) one end are all inclined to be installed in support frame (210) main part, and collet (214) top is equipped with the cambered surface with steel arch (6) looks adaptation.

8. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 1, wherein: the wind rope (5) is arranged at least two vertex angles of the lifting tower (1), and the wind rope (5) can be arranged on one side or two sides of the lifting tower (1).

9. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 8, wherein: one end of the cable rope (5) is fixed on the bridge deck and forms an included angle of 30-89 degrees with the bridge deck.

10. The steel arch lifting device suitable for horizontal splicing lifting vertical rotation construction according to claim 5, wherein: and a protective fence (7) is arranged on the periphery of the workbench (4).

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